Trilium/libraries/fancytree/jquery.fancytree-all-deps.js

/*! jQuery Fancytree Plugin - 2.34.0 - 2019-12-26T14:16:19Z
  * https://github.com/mar10/fancytree
  * Copyright (c) 2019 Martin Wendt; Licensed MIT
 */
/*! jQuery UI - v1.12.1 - 2018-05-20
* http://jqueryui.com
* Includes: widget.js, position.js, keycode.js, scroll-parent.js, unique-id.js
* Copyright jQuery Foundation and other contributors; Licensed MIT */

/*
	NOTE: Original jQuery UI wrapper was replaced with a simple IIFE.
	See README-Fancytree.md
*/
(function( $ ) {

$.ui = $.ui || {};

var version = $.ui.version = "1.12.1";


/*!
 * jQuery UI Widget 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Widget
//>>group: Core
//>>description: Provides a factory for creating stateful widgets with a common API.
//>>docs: http://api.jqueryui.com/jQuery.widget/
//>>demos: http://jqueryui.com/widget/



var widgetUuid = 0;
var widgetSlice = Array.prototype.slice;

$.cleanData = ( function( orig ) {
	return function( elems ) {
		var events, elem, i;
		for ( i = 0; ( elem = elems[ i ] ) != null; i++ ) {
			try {

				// Only trigger remove when necessary to save time
				events = $._data( elem, "events" );
				if ( events && events.remove ) {
					$( elem ).triggerHandler( "remove" );
				}

			// Http://bugs.jquery.com/ticket/8235
			} catch ( e ) {}
		}
		orig( elems );
	};
} )( $.cleanData );

$.widget = function( name, base, prototype ) {
	var existingConstructor, constructor, basePrototype;

	// ProxiedPrototype allows the provided prototype to remain unmodified
	// so that it can be used as a mixin for multiple widgets (#8876)
	var proxiedPrototype = {};

	var namespace = name.split( "." )[ 0 ];
	name = name.split( "." )[ 1 ];
	var fullName = namespace + "-" + name;

	if ( !prototype ) {
		prototype = base;
		base = $.Widget;
	}

	if ( $.isArray( prototype ) ) {
		prototype = $.extend.apply( null, [ {} ].concat( prototype ) );
	}

	// Create selector for plugin
	$.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
		return !!$.data( elem, fullName );
	};

	$[ namespace ] = $[ namespace ] || {};
	existingConstructor = $[ namespace ][ name ];
	constructor = $[ namespace ][ name ] = function( options, element ) {

		// Allow instantiation without "new" keyword
		if ( !this._createWidget ) {
			return new constructor( options, element );
		}

		// Allow instantiation without initializing for simple inheritance
		// must use "new" keyword (the code above always passes args)
		if ( arguments.length ) {
			this._createWidget( options, element );
		}
	};

	// Extend with the existing constructor to carry over any static properties
	$.extend( constructor, existingConstructor, {
		version: prototype.version,

		// Copy the object used to create the prototype in case we need to
		// redefine the widget later
		_proto: $.extend( {}, prototype ),

		// Track widgets that inherit from this widget in case this widget is
		// redefined after a widget inherits from it
		_childConstructors: []
	} );

	basePrototype = new base();

	// We need to make the options hash a property directly on the new instance
	// otherwise we'll modify the options hash on the prototype that we're
	// inheriting from
	basePrototype.options = $.widget.extend( {}, basePrototype.options );
	$.each( prototype, function( prop, value ) {
		if ( !$.isFunction( value ) ) {
			proxiedPrototype[ prop ] = value;
			return;
		}
		proxiedPrototype[ prop ] = ( function() {
			function _super() {
				return base.prototype[ prop ].apply( this, arguments );
			}

			function _superApply( args ) {
				return base.prototype[ prop ].apply( this, args );
			}

			return function() {
				var __super = this._super;
				var __superApply = this._superApply;
				var returnValue;

				this._super = _super;
				this._superApply = _superApply;

				returnValue = value.apply( this, arguments );

				this._super = __super;
				this._superApply = __superApply;

				return returnValue;
			};
		} )();
	} );
	constructor.prototype = $.widget.extend( basePrototype, {

		// TODO: remove support for widgetEventPrefix
		// always use the name + a colon as the prefix, e.g., draggable:start
		// don't prefix for widgets that aren't DOM-based
		widgetEventPrefix: existingConstructor ? ( basePrototype.widgetEventPrefix || name ) : name
	}, proxiedPrototype, {
		constructor: constructor,
		namespace: namespace,
		widgetName: name,
		widgetFullName: fullName
	} );

	// If this widget is being redefined then we need to find all widgets that
	// are inheriting from it and redefine all of them so that they inherit from
	// the new version of this widget. We're essentially trying to replace one
	// level in the prototype chain.
	if ( existingConstructor ) {
		$.each( existingConstructor._childConstructors, function( i, child ) {
			var childPrototype = child.prototype;

			// Redefine the child widget using the same prototype that was
			// originally used, but inherit from the new version of the base
			$.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor,
				child._proto );
		} );

		// Remove the list of existing child constructors from the old constructor
		// so the old child constructors can be garbage collected
		delete existingConstructor._childConstructors;
	} else {
		base._childConstructors.push( constructor );
	}

	$.widget.bridge( name, constructor );

	return constructor;
};

$.widget.extend = function( target ) {
	var input = widgetSlice.call( arguments, 1 );
	var inputIndex = 0;
	var inputLength = input.length;
	var key;
	var value;

	for ( ; inputIndex < inputLength; inputIndex++ ) {
		for ( key in input[ inputIndex ] ) {
			value = input[ inputIndex ][ key ];
			if ( input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {

				// Clone objects
				if ( $.isPlainObject( value ) ) {
					target[ key ] = $.isPlainObject( target[ key ] ) ?
						$.widget.extend( {}, target[ key ], value ) :

						// Don't extend strings, arrays, etc. with objects
						$.widget.extend( {}, value );

				// Copy everything else by reference
				} else {
					target[ key ] = value;
				}
			}
		}
	}
	return target;
};

$.widget.bridge = function( name, object ) {
	var fullName = object.prototype.widgetFullName || name;
	$.fn[ name ] = function( options ) {
		var isMethodCall = typeof options === "string";
		var args = widgetSlice.call( arguments, 1 );
		var returnValue = this;

		if ( isMethodCall ) {

			// If this is an empty collection, we need to have the instance method
			// return undefined instead of the jQuery instance
			if ( !this.length && options === "instance" ) {
				returnValue = undefined;
			} else {
				this.each( function() {
					var methodValue;
					var instance = $.data( this, fullName );

					if ( options === "instance" ) {
						returnValue = instance;
						return false;
					}

					if ( !instance ) {
						return $.error( "cannot call methods on " + name +
							" prior to initialization; " +
							"attempted to call method '" + options + "'" );
					}

					if ( !$.isFunction( instance[ options ] ) || options.charAt( 0 ) === "_" ) {
						return $.error( "no such method '" + options + "' for " + name +
							" widget instance" );
					}

					methodValue = instance[ options ].apply( instance, args );

					if ( methodValue !== instance && methodValue !== undefined ) {
						returnValue = methodValue && methodValue.jquery ?
							returnValue.pushStack( methodValue.get() ) :
							methodValue;
						return false;
					}
				} );
			}
		} else {

			// Allow multiple hashes to be passed on init
			if ( args.length ) {
				options = $.widget.extend.apply( null, [ options ].concat( args ) );
			}

			this.each( function() {
				var instance = $.data( this, fullName );
				if ( instance ) {
					instance.option( options || {} );
					if ( instance._init ) {
						instance._init();
					}
				} else {
					$.data( this, fullName, new object( options, this ) );
				}
			} );
		}

		return returnValue;
	};
};

$.Widget = function( /* options, element */ ) {};
$.Widget._childConstructors = [];

$.Widget.prototype = {
	widgetName: "widget",
	widgetEventPrefix: "",
	defaultElement: "<div>",

	options: {
		classes: {},
		disabled: false,

		// Callbacks
		create: null
	},

	_createWidget: function( options, element ) {
		element = $( element || this.defaultElement || this )[ 0 ];
		this.element = $( element );
		this.uuid = widgetUuid++;
		this.eventNamespace = "." + this.widgetName + this.uuid;

		this.bindings = $();
		this.hoverable = $();
		this.focusable = $();
		this.classesElementLookup = {};

		if ( element !== this ) {
			$.data( element, this.widgetFullName, this );
			this._on( true, this.element, {
				remove: function( event ) {
					if ( event.target === element ) {
						this.destroy();
					}
				}
			} );
			this.document = $( element.style ?

				// Element within the document
				element.ownerDocument :

				// Element is window or document
				element.document || element );
			this.window = $( this.document[ 0 ].defaultView || this.document[ 0 ].parentWindow );
		}

		this.options = $.widget.extend( {},
			this.options,
			this._getCreateOptions(),
			options );

		this._create();

		if ( this.options.disabled ) {
			this._setOptionDisabled( this.options.disabled );
		}

		this._trigger( "create", null, this._getCreateEventData() );
		this._init();
	},

	_getCreateOptions: function() {
		return {};
	},

	_getCreateEventData: $.noop,

	_create: $.noop,

	_init: $.noop,

	destroy: function() {
		var that = this;

		this._destroy();
		$.each( this.classesElementLookup, function( key, value ) {
			that._removeClass( value, key );
		} );

		// We can probably remove the unbind calls in 2.0
		// all event bindings should go through this._on()
		this.element
			.off( this.eventNamespace )
			.removeData( this.widgetFullName );
		this.widget()
			.off( this.eventNamespace )
			.removeAttr( "aria-disabled" );

		// Clean up events and states
		this.bindings.off( this.eventNamespace );
	},

	_destroy: $.noop,

	widget: function() {
		return this.element;
	},

	option: function( key, value ) {
		var options = key;
		var parts;
		var curOption;
		var i;

		if ( arguments.length === 0 ) {

			// Don't return a reference to the internal hash
			return $.widget.extend( {}, this.options );
		}

		if ( typeof key === "string" ) {

			// Handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
			options = {};
			parts = key.split( "." );
			key = parts.shift();
			if ( parts.length ) {
				curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
				for ( i = 0; i < parts.length - 1; i++ ) {
					curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
					curOption = curOption[ parts[ i ] ];
				}
				key = parts.pop();
				if ( arguments.length === 1 ) {
					return curOption[ key ] === undefined ? null : curOption[ key ];
				}
				curOption[ key ] = value;
			} else {
				if ( arguments.length === 1 ) {
					return this.options[ key ] === undefined ? null : this.options[ key ];
				}
				options[ key ] = value;
			}
		}

		this._setOptions( options );

		return this;
	},

	_setOptions: function( options ) {
		var key;

		for ( key in options ) {
			this._setOption( key, options[ key ] );
		}

		return this;
	},

	_setOption: function( key, value ) {
		if ( key === "classes" ) {
			this._setOptionClasses( value );
		}

		this.options[ key ] = value;

		if ( key === "disabled" ) {
			this._setOptionDisabled( value );
		}

		return this;
	},

	_setOptionClasses: function( value ) {
		var classKey, elements, currentElements;

		for ( classKey in value ) {
			currentElements = this.classesElementLookup[ classKey ];
			if ( value[ classKey ] === this.options.classes[ classKey ] ||
					!currentElements ||
					!currentElements.length ) {
				continue;
			}

			// We are doing this to create a new jQuery object because the _removeClass() call
			// on the next line is going to destroy the reference to the current elements being
			// tracked. We need to save a copy of this collection so that we can add the new classes
			// below.
			elements = $( currentElements.get() );
			this._removeClass( currentElements, classKey );

			// We don't use _addClass() here, because that uses this.options.classes
			// for generating the string of classes. We want to use the value passed in from
			// _setOption(), this is the new value of the classes option which was passed to
			// _setOption(). We pass this value directly to _classes().
			elements.addClass( this._classes( {
				element: elements,
				keys: classKey,
				classes: value,
				add: true
			} ) );
		}
	},

	_setOptionDisabled: function( value ) {
		this._toggleClass( this.widget(), this.widgetFullName + "-disabled", null, !!value );

		// If the widget is becoming disabled, then nothing is interactive
		if ( value ) {
			this._removeClass( this.hoverable, null, "ui-state-hover" );
			this._removeClass( this.focusable, null, "ui-state-focus" );
		}
	},

	enable: function() {
		return this._setOptions( { disabled: false } );
	},

	disable: function() {
		return this._setOptions( { disabled: true } );
	},

	_classes: function( options ) {
		var full = [];
		var that = this;

		options = $.extend( {
			element: this.element,
			classes: this.options.classes || {}
		}, options );

		function processClassString( classes, checkOption ) {
			var current, i;
			for ( i = 0; i < classes.length; i++ ) {
				current = that.classesElementLookup[ classes[ i ] ] || $();
				if ( options.add ) {
					current = $( $.unique( current.get().concat( options.element.get() ) ) );
				} else {
					current = $( current.not( options.element ).get() );
				}
				that.classesElementLookup[ classes[ i ] ] = current;
				full.push( classes[ i ] );
				if ( checkOption && options.classes[ classes[ i ] ] ) {
					full.push( options.classes[ classes[ i ] ] );
				}
			}
		}

		this._on( options.element, {
			"remove": "_untrackClassesElement"
		} );

		if ( options.keys ) {
			processClassString( options.keys.match( /\S+/g ) || [], true );
		}
		if ( options.extra ) {
			processClassString( options.extra.match( /\S+/g ) || [] );
		}

		return full.join( " " );
	},

	_untrackClassesElement: function( event ) {
		var that = this;
		$.each( that.classesElementLookup, function( key, value ) {
			if ( $.inArray( event.target, value ) !== -1 ) {
				that.classesElementLookup[ key ] = $( value.not( event.target ).get() );
			}
		} );
	},

	_removeClass: function( element, keys, extra ) {
		return this._toggleClass( element, keys, extra, false );
	},

	_addClass: function( element, keys, extra ) {
		return this._toggleClass( element, keys, extra, true );
	},

	_toggleClass: function( element, keys, extra, add ) {
		add = ( typeof add === "boolean" ) ? add : extra;
		var shift = ( typeof element === "string" || element === null ),
			options = {
				extra: shift ? keys : extra,
				keys: shift ? element : keys,
				element: shift ? this.element : element,
				add: add
			};
		options.element.toggleClass( this._classes( options ), add );
		return this;
	},

	_on: function( suppressDisabledCheck, element, handlers ) {
		var delegateElement;
		var instance = this;

		// No suppressDisabledCheck flag, shuffle arguments
		if ( typeof suppressDisabledCheck !== "boolean" ) {
			handlers = element;
			element = suppressDisabledCheck;
			suppressDisabledCheck = false;
		}

		// No element argument, shuffle and use this.element
		if ( !handlers ) {
			handlers = element;
			element = this.element;
			delegateElement = this.widget();
		} else {
			element = delegateElement = $( element );
			this.bindings = this.bindings.add( element );
		}

		$.each( handlers, function( event, handler ) {
			function handlerProxy() {

				// Allow widgets to customize the disabled handling
				// - disabled as an array instead of boolean
				// - disabled class as method for disabling individual parts
				if ( !suppressDisabledCheck &&
						( instance.options.disabled === true ||
						$( this ).hasClass( "ui-state-disabled" ) ) ) {
					return;
				}
				return ( typeof handler === "string" ? instance[ handler ] : handler )
					.apply( instance, arguments );
			}

			// Copy the guid so direct unbinding works
			if ( typeof handler !== "string" ) {
				handlerProxy.guid = handler.guid =
					handler.guid || handlerProxy.guid || $.guid++;
			}

			var match = event.match( /^([\w:-]*)\s*(.*)$/ );
			var eventName = match[ 1 ] + instance.eventNamespace;
			var selector = match[ 2 ];

			if ( selector ) {
				delegateElement.on( eventName, selector, handlerProxy );
			} else {
				element.on( eventName, handlerProxy );
			}
		} );
	},

	_off: function( element, eventName ) {
		eventName = ( eventName || "" ).split( " " ).join( this.eventNamespace + " " ) +
			this.eventNamespace;
		element.off( eventName ).off( eventName );

		// Clear the stack to avoid memory leaks (#10056)
		this.bindings = $( this.bindings.not( element ).get() );
		this.focusable = $( this.focusable.not( element ).get() );
		this.hoverable = $( this.hoverable.not( element ).get() );
	},

	_delay: function( handler, delay ) {
		function handlerProxy() {
			return ( typeof handler === "string" ? instance[ handler ] : handler )
				.apply( instance, arguments );
		}
		var instance = this;
		return setTimeout( handlerProxy, delay || 0 );
	},

	_hoverable: function( element ) {
		this.hoverable = this.hoverable.add( element );
		this._on( element, {
			mouseenter: function( event ) {
				this._addClass( $( event.currentTarget ), null, "ui-state-hover" );
			},
			mouseleave: function( event ) {
				this._removeClass( $( event.currentTarget ), null, "ui-state-hover" );
			}
		} );
	},

	_focusable: function( element ) {
		this.focusable = this.focusable.add( element );
		this._on( element, {
			focusin: function( event ) {
				this._addClass( $( event.currentTarget ), null, "ui-state-focus" );
			},
			focusout: function( event ) {
				this._removeClass( $( event.currentTarget ), null, "ui-state-focus" );
			}
		} );
	},

	_trigger: function( type, event, data ) {
		var prop, orig;
		var callback = this.options[ type ];

		data = data || {};
		event = $.Event( event );
		event.type = ( type === this.widgetEventPrefix ?
			type :
			this.widgetEventPrefix + type ).toLowerCase();

		// The original event may come from any element
		// so we need to reset the target on the new event
		event.target = this.element[ 0 ];

		// Copy original event properties over to the new event
		orig = event.originalEvent;
		if ( orig ) {
			for ( prop in orig ) {
				if ( !( prop in event ) ) {
					event[ prop ] = orig[ prop ];
				}
			}
		}

		this.element.trigger( event, data );
		return !( $.isFunction( callback ) &&
			callback.apply( this.element[ 0 ], [ event ].concat( data ) ) === false ||
			event.isDefaultPrevented() );
	}
};

$.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
	$.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
		if ( typeof options === "string" ) {
			options = { effect: options };
		}

		var hasOptions;
		var effectName = !options ?
			method :
			options === true || typeof options === "number" ?
				defaultEffect :
				options.effect || defaultEffect;

		options = options || {};
		if ( typeof options === "number" ) {
			options = { duration: options };
		}

		hasOptions = !$.isEmptyObject( options );
		options.complete = callback;

		if ( options.delay ) {
			element.delay( options.delay );
		}

		if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) {
			element[ method ]( options );
		} else if ( effectName !== method && element[ effectName ] ) {
			element[ effectName ]( options.duration, options.easing, callback );
		} else {
			element.queue( function( next ) {
				$( this )[ method ]();
				if ( callback ) {
					callback.call( element[ 0 ] );
				}
				next();
			} );
		}
	};
} );

var widget = $.widget;


/*!
 * jQuery UI Position 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/position/
 */

//>>label: Position
//>>group: Core
//>>description: Positions elements relative to other elements.
//>>docs: http://api.jqueryui.com/position/
//>>demos: http://jqueryui.com/position/


( function() {
var cachedScrollbarWidth,
	max = Math.max,
	abs = Math.abs,
	rhorizontal = /left|center|right/,
	rvertical = /top|center|bottom/,
	roffset = /[\+\-]\d+(\.[\d]+)?%?/,
	rposition = /^\w+/,
	rpercent = /%$/,
	_position = $.fn.position;

function getOffsets( offsets, width, height ) {
	return [
		parseFloat( offsets[ 0 ] ) * ( rpercent.test( offsets[ 0 ] ) ? width / 100 : 1 ),
		parseFloat( offsets[ 1 ] ) * ( rpercent.test( offsets[ 1 ] ) ? height / 100 : 1 )
	];
}

function parseCss( element, property ) {
	return parseInt( $.css( element, property ), 10 ) || 0;
}

function getDimensions( elem ) {
	var raw = elem[ 0 ];
	if ( raw.nodeType === 9 ) {
		return {
			width: elem.width(),
			height: elem.height(),
			offset: { top: 0, left: 0 }
		};
	}
	if ( $.isWindow( raw ) ) {
		return {
			width: elem.width(),
			height: elem.height(),
			offset: { top: elem.scrollTop(), left: elem.scrollLeft() }
		};
	}
	if ( raw.preventDefault ) {
		return {
			width: 0,
			height: 0,
			offset: { top: raw.pageY, left: raw.pageX }
		};
	}
	return {
		width: elem.outerWidth(),
		height: elem.outerHeight(),
		offset: elem.offset()
	};
}

$.position = {
	scrollbarWidth: function() {
		if ( cachedScrollbarWidth !== undefined ) {
			return cachedScrollbarWidth;
		}
		var w1, w2,
			div = $( "<div " +
				"style='display:block;position:absolute;width:50px;height:50px;overflow:hidden;'>" +
				"<div style='height:100px;width:auto;'></div></div>" ),
			innerDiv = div.children()[ 0 ];

		$( "body" ).append( div );
		w1 = innerDiv.offsetWidth;
		div.css( "overflow", "scroll" );

		w2 = innerDiv.offsetWidth;

		if ( w1 === w2 ) {
			w2 = div[ 0 ].clientWidth;
		}

		div.remove();

		return ( cachedScrollbarWidth = w1 - w2 );
	},
	getScrollInfo: function( within ) {
		var overflowX = within.isWindow || within.isDocument ? "" :
				within.element.css( "overflow-x" ),
			overflowY = within.isWindow || within.isDocument ? "" :
				within.element.css( "overflow-y" ),
			hasOverflowX = overflowX === "scroll" ||
				( overflowX === "auto" && within.width < within.element[ 0 ].scrollWidth ),
			hasOverflowY = overflowY === "scroll" ||
				( overflowY === "auto" && within.height < within.element[ 0 ].scrollHeight );
		return {
			width: hasOverflowY ? $.position.scrollbarWidth() : 0,
			height: hasOverflowX ? $.position.scrollbarWidth() : 0
		};
	},
	getWithinInfo: function( element ) {
		var withinElement = $( element || window ),
			isWindow = $.isWindow( withinElement[ 0 ] ),
			isDocument = !!withinElement[ 0 ] && withinElement[ 0 ].nodeType === 9,
			hasOffset = !isWindow && !isDocument;
		return {
			element: withinElement,
			isWindow: isWindow,
			isDocument: isDocument,
			offset: hasOffset ? $( element ).offset() : { left: 0, top: 0 },
			scrollLeft: withinElement.scrollLeft(),
			scrollTop: withinElement.scrollTop(),
			width: withinElement.outerWidth(),
			height: withinElement.outerHeight()
		};
	}
};

$.fn.position = function( options ) {
	if ( !options || !options.of ) {
		return _position.apply( this, arguments );
	}

	// Make a copy, we don't want to modify arguments
	options = $.extend( {}, options );

	var atOffset, targetWidth, targetHeight, targetOffset, basePosition, dimensions,
		target = $( options.of ),
		within = $.position.getWithinInfo( options.within ),
		scrollInfo = $.position.getScrollInfo( within ),
		collision = ( options.collision || "flip" ).split( " " ),
		offsets = {};

	dimensions = getDimensions( target );
	if ( target[ 0 ].preventDefault ) {

		// Force left top to allow flipping
		options.at = "left top";
	}
	targetWidth = dimensions.width;
	targetHeight = dimensions.height;
	targetOffset = dimensions.offset;

	// Clone to reuse original targetOffset later
	basePosition = $.extend( {}, targetOffset );

	// Force my and at to have valid horizontal and vertical positions
	// if a value is missing or invalid, it will be converted to center
	$.each( [ "my", "at" ], function() {
		var pos = ( options[ this ] || "" ).split( " " ),
			horizontalOffset,
			verticalOffset;

		if ( pos.length === 1 ) {
			pos = rhorizontal.test( pos[ 0 ] ) ?
				pos.concat( [ "center" ] ) :
				rvertical.test( pos[ 0 ] ) ?
					[ "center" ].concat( pos ) :
					[ "center", "center" ];
		}
		pos[ 0 ] = rhorizontal.test( pos[ 0 ] ) ? pos[ 0 ] : "center";
		pos[ 1 ] = rvertical.test( pos[ 1 ] ) ? pos[ 1 ] : "center";

		// Calculate offsets
		horizontalOffset = roffset.exec( pos[ 0 ] );
		verticalOffset = roffset.exec( pos[ 1 ] );
		offsets[ this ] = [
			horizontalOffset ? horizontalOffset[ 0 ] : 0,
			verticalOffset ? verticalOffset[ 0 ] : 0
		];

		// Reduce to just the positions without the offsets
		options[ this ] = [
			rposition.exec( pos[ 0 ] )[ 0 ],
			rposition.exec( pos[ 1 ] )[ 0 ]
		];
	} );

	// Normalize collision option
	if ( collision.length === 1 ) {
		collision[ 1 ] = collision[ 0 ];
	}

	if ( options.at[ 0 ] === "right" ) {
		basePosition.left += targetWidth;
	} else if ( options.at[ 0 ] === "center" ) {
		basePosition.left += targetWidth / 2;
	}

	if ( options.at[ 1 ] === "bottom" ) {
		basePosition.top += targetHeight;
	} else if ( options.at[ 1 ] === "center" ) {
		basePosition.top += targetHeight / 2;
	}

	atOffset = getOffsets( offsets.at, targetWidth, targetHeight );
	basePosition.left += atOffset[ 0 ];
	basePosition.top += atOffset[ 1 ];

	return this.each( function() {
		var collisionPosition, using,
			elem = $( this ),
			elemWidth = elem.outerWidth(),
			elemHeight = elem.outerHeight(),
			marginLeft = parseCss( this, "marginLeft" ),
			marginTop = parseCss( this, "marginTop" ),
			collisionWidth = elemWidth + marginLeft + parseCss( this, "marginRight" ) +
				scrollInfo.width,
			collisionHeight = elemHeight + marginTop + parseCss( this, "marginBottom" ) +
				scrollInfo.height,
			position = $.extend( {}, basePosition ),
			myOffset = getOffsets( offsets.my, elem.outerWidth(), elem.outerHeight() );

		if ( options.my[ 0 ] === "right" ) {
			position.left -= elemWidth;
		} else if ( options.my[ 0 ] === "center" ) {
			position.left -= elemWidth / 2;
		}

		if ( options.my[ 1 ] === "bottom" ) {
			position.top -= elemHeight;
		} else if ( options.my[ 1 ] === "center" ) {
			position.top -= elemHeight / 2;
		}

		position.left += myOffset[ 0 ];
		position.top += myOffset[ 1 ];

		collisionPosition = {
			marginLeft: marginLeft,
			marginTop: marginTop
		};

		$.each( [ "left", "top" ], function( i, dir ) {
			if ( $.ui.position[ collision[ i ] ] ) {
				$.ui.position[ collision[ i ] ][ dir ]( position, {
					targetWidth: targetWidth,
					targetHeight: targetHeight,
					elemWidth: elemWidth,
					elemHeight: elemHeight,
					collisionPosition: collisionPosition,
					collisionWidth: collisionWidth,
					collisionHeight: collisionHeight,
					offset: [ atOffset[ 0 ] + myOffset[ 0 ], atOffset [ 1 ] + myOffset[ 1 ] ],
					my: options.my,
					at: options.at,
					within: within,
					elem: elem
				} );
			}
		} );

		if ( options.using ) {

			// Adds feedback as second argument to using callback, if present
			using = function( props ) {
				var left = targetOffset.left - position.left,
					right = left + targetWidth - elemWidth,
					top = targetOffset.top - position.top,
					bottom = top + targetHeight - elemHeight,
					feedback = {
						target: {
							element: target,
							left: targetOffset.left,
							top: targetOffset.top,
							width: targetWidth,
							height: targetHeight
						},
						element: {
							element: elem,
							left: position.left,
							top: position.top,
							width: elemWidth,
							height: elemHeight
						},
						horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
						vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
					};
				if ( targetWidth < elemWidth && abs( left + right ) < targetWidth ) {
					feedback.horizontal = "center";
				}
				if ( targetHeight < elemHeight && abs( top + bottom ) < targetHeight ) {
					feedback.vertical = "middle";
				}
				if ( max( abs( left ), abs( right ) ) > max( abs( top ), abs( bottom ) ) ) {
					feedback.important = "horizontal";
				} else {
					feedback.important = "vertical";
				}
				options.using.call( this, props, feedback );
			};
		}

		elem.offset( $.extend( position, { using: using } ) );
	} );
};

$.ui.position = {
	fit: {
		left: function( position, data ) {
			var within = data.within,
				withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
				outerWidth = within.width,
				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
				overLeft = withinOffset - collisionPosLeft,
				overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
				newOverRight;

			// Element is wider than within
			if ( data.collisionWidth > outerWidth ) {

				// Element is initially over the left side of within
				if ( overLeft > 0 && overRight <= 0 ) {
					newOverRight = position.left + overLeft + data.collisionWidth - outerWidth -
						withinOffset;
					position.left += overLeft - newOverRight;

				// Element is initially over right side of within
				} else if ( overRight > 0 && overLeft <= 0 ) {
					position.left = withinOffset;

				// Element is initially over both left and right sides of within
				} else {
					if ( overLeft > overRight ) {
						position.left = withinOffset + outerWidth - data.collisionWidth;
					} else {
						position.left = withinOffset;
					}
				}

			// Too far left -> align with left edge
			} else if ( overLeft > 0 ) {
				position.left += overLeft;

			// Too far right -> align with right edge
			} else if ( overRight > 0 ) {
				position.left -= overRight;

			// Adjust based on position and margin
			} else {
				position.left = max( position.left - collisionPosLeft, position.left );
			}
		},
		top: function( position, data ) {
			var within = data.within,
				withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
				outerHeight = data.within.height,
				collisionPosTop = position.top - data.collisionPosition.marginTop,
				overTop = withinOffset - collisionPosTop,
				overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
				newOverBottom;

			// Element is taller than within
			if ( data.collisionHeight > outerHeight ) {

				// Element is initially over the top of within
				if ( overTop > 0 && overBottom <= 0 ) {
					newOverBottom = position.top + overTop + data.collisionHeight - outerHeight -
						withinOffset;
					position.top += overTop - newOverBottom;

				// Element is initially over bottom of within
				} else if ( overBottom > 0 && overTop <= 0 ) {
					position.top = withinOffset;

				// Element is initially over both top and bottom of within
				} else {
					if ( overTop > overBottom ) {
						position.top = withinOffset + outerHeight - data.collisionHeight;
					} else {
						position.top = withinOffset;
					}
				}

			// Too far up -> align with top
			} else if ( overTop > 0 ) {
				position.top += overTop;

			// Too far down -> align with bottom edge
			} else if ( overBottom > 0 ) {
				position.top -= overBottom;

			// Adjust based on position and margin
			} else {
				position.top = max( position.top - collisionPosTop, position.top );
			}
		}
	},
	flip: {
		left: function( position, data ) {
			var within = data.within,
				withinOffset = within.offset.left + within.scrollLeft,
				outerWidth = within.width,
				offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
				collisionPosLeft = position.left - data.collisionPosition.marginLeft,
				overLeft = collisionPosLeft - offsetLeft,
				overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
				myOffset = data.my[ 0 ] === "left" ?
					-data.elemWidth :
					data.my[ 0 ] === "right" ?
						data.elemWidth :
						0,
				atOffset = data.at[ 0 ] === "left" ?
					data.targetWidth :
					data.at[ 0 ] === "right" ?
						-data.targetWidth :
						0,
				offset = -2 * data.offset[ 0 ],
				newOverRight,
				newOverLeft;

			if ( overLeft < 0 ) {
				newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth -
					outerWidth - withinOffset;
				if ( newOverRight < 0 || newOverRight < abs( overLeft ) ) {
					position.left += myOffset + atOffset + offset;
				}
			} else if ( overRight > 0 ) {
				newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset +
					atOffset + offset - offsetLeft;
				if ( newOverLeft > 0 || abs( newOverLeft ) < overRight ) {
					position.left += myOffset + atOffset + offset;
				}
			}
		},
		top: function( position, data ) {
			var within = data.within,
				withinOffset = within.offset.top + within.scrollTop,
				outerHeight = within.height,
				offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
				collisionPosTop = position.top - data.collisionPosition.marginTop,
				overTop = collisionPosTop - offsetTop,
				overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
				top = data.my[ 1 ] === "top",
				myOffset = top ?
					-data.elemHeight :
					data.my[ 1 ] === "bottom" ?
						data.elemHeight :
						0,
				atOffset = data.at[ 1 ] === "top" ?
					data.targetHeight :
					data.at[ 1 ] === "bottom" ?
						-data.targetHeight :
						0,
				offset = -2 * data.offset[ 1 ],
				newOverTop,
				newOverBottom;
			if ( overTop < 0 ) {
				newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight -
					outerHeight - withinOffset;
				if ( newOverBottom < 0 || newOverBottom < abs( overTop ) ) {
					position.top += myOffset + atOffset + offset;
				}
			} else if ( overBottom > 0 ) {
				newOverTop = position.top - data.collisionPosition.marginTop + myOffset + atOffset +
					offset - offsetTop;
				if ( newOverTop > 0 || abs( newOverTop ) < overBottom ) {
					position.top += myOffset + atOffset + offset;
				}
			}
		}
	},
	flipfit: {
		left: function() {
			$.ui.position.flip.left.apply( this, arguments );
			$.ui.position.fit.left.apply( this, arguments );
		},
		top: function() {
			$.ui.position.flip.top.apply( this, arguments );
			$.ui.position.fit.top.apply( this, arguments );
		}
	}
};

} )();

var position = $.ui.position;


/*!
 * jQuery UI Keycode 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Keycode
//>>group: Core
//>>description: Provide keycodes as keynames
//>>docs: http://api.jqueryui.com/jQuery.ui.keyCode/


var keycode = $.ui.keyCode = {
	BACKSPACE: 8,
	COMMA: 188,
	DELETE: 46,
	DOWN: 40,
	END: 35,
	ENTER: 13,
	ESCAPE: 27,
	HOME: 36,
	LEFT: 37,
	PAGE_DOWN: 34,
	PAGE_UP: 33,
	PERIOD: 190,
	RIGHT: 39,
	SPACE: 32,
	TAB: 9,
	UP: 38
};


/*!
 * jQuery UI Scroll Parent 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: scrollParent
//>>group: Core
//>>description: Get the closest ancestor element that is scrollable.
//>>docs: http://api.jqueryui.com/scrollParent/



var scrollParent = $.fn.scrollParent = function( includeHidden ) {
	var position = this.css( "position" ),
		excludeStaticParent = position === "absolute",
		overflowRegex = includeHidden ? /(auto|scroll|hidden)/ : /(auto|scroll)/,
		scrollParent = this.parents().filter( function() {
			var parent = $( this );
			if ( excludeStaticParent && parent.css( "position" ) === "static" ) {
				return false;
			}
			return overflowRegex.test( parent.css( "overflow" ) + parent.css( "overflow-y" ) +
				parent.css( "overflow-x" ) );
		} ).eq( 0 );

	return position === "fixed" || !scrollParent.length ?
		$( this[ 0 ].ownerDocument || document ) :
		scrollParent;
};


/*!
 * jQuery UI Unique ID 1.12.1
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: uniqueId
//>>group: Core
//>>description: Functions to generate and remove uniqueId's
//>>docs: http://api.jqueryui.com/uniqueId/



var uniqueId = $.fn.extend( {
	uniqueId: ( function() {
		var uuid = 0;

		return function() {
			return this.each( function() {
				if ( !this.id ) {
					this.id = "ui-id-" + ( ++uuid );
				}
			} );
		};
	} )(),

	removeUniqueId: function() {
		return this.each( function() {
			if ( /^ui-id-\d+$/.test( this.id ) ) {
				$( this ).removeAttr( "id" );
			}
		} );
	}
} );


// NOTE: Original jQuery UI wrapper was replaced. See README-Fancytree.md
// }));
})(jQuery);

(function( factory ) {
	if ( typeof define === "function" && define.amd ) {
		// AMD. Register as an anonymous module.
		define( [ "jquery" ], factory );
	} else if ( typeof module === "object" && module.exports ) {
		// Node/CommonJS
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory( jQuery );
	}
}(function( $ ) {


/*! Fancytree Core *//*!
 * jquery.fancytree.js
 * Tree view control with support for lazy loading and much more.
 * https://github.com/mar10/fancytree/
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

/** Core Fancytree module.
 */

// UMD wrapper for the Fancytree core module
(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree.ui-deps"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree.ui-deps");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	// prevent duplicate loading
	if ($.ui && $.ui.fancytree) {
		$.ui.fancytree.warn("Fancytree: ignored duplicate include");
		return;
	}

	/******************************************************************************
	 * Private functions and variables
	 */

	var i,
		attr,
		FT = null, // initialized below
		TEST_IMG = new RegExp(/\.|\//), // strings are considered image urls if they contain '.' or '/'
		REX_HTML = /[&<>"'/]/g, // Escape those characters
		REX_TOOLTIP = /[<>"'/]/g, // Don't escape `&` in tooltips
		RECURSIVE_REQUEST_ERROR = "$recursive_request",
		// CLIPBOARD = null,
		ENTITY_MAP = {
			"&": "&amp;",
			"<": "&lt;",
			">": "&gt;",
			'"': "&quot;",
			"'": "&#39;",
			"/": "&#x2F;",
		},
		IGNORE_KEYCODES = { 16: true, 17: true, 18: true },
		SPECIAL_KEYCODES = {
			8: "backspace",
			9: "tab",
			10: "return",
			13: "return",
			// 16: null, 17: null, 18: null,  // ignore shift, ctrl, alt
			19: "pause",
			20: "capslock",
			27: "esc",
			32: "space",
			33: "pageup",
			34: "pagedown",
			35: "end",
			36: "home",
			37: "left",
			38: "up",
			39: "right",
			40: "down",
			45: "insert",
			46: "del",
			59: ";",
			61: "=",
			// 91: null, 93: null,  // ignore left and right meta
			96: "0",
			97: "1",
			98: "2",
			99: "3",
			100: "4",
			101: "5",
			102: "6",
			103: "7",
			104: "8",
			105: "9",
			106: "*",
			107: "+",
			109: "-",
			110: ".",
			111: "/",
			112: "f1",
			113: "f2",
			114: "f3",
			115: "f4",
			116: "f5",
			117: "f6",
			118: "f7",
			119: "f8",
			120: "f9",
			121: "f10",
			122: "f11",
			123: "f12",
			144: "numlock",
			145: "scroll",
			173: "-",
			186: ";",
			187: "=",
			188: ",",
			189: "-",
			190: ".",
			191: "/",
			192: "`",
			219: "[",
			220: "\\",
			221: "]",
			222: "'",
		},
		MODIFIERS = {
			16: "shift",
			17: "ctrl",
			18: "alt",
			91: "meta",
			93: "meta",
		},
		MOUSE_BUTTONS = { 0: "", 1: "left", 2: "middle", 3: "right" },
		// Boolean attributes that can be set with equivalent class names in the LI tags
		// Note: v2.23: checkbox and hideCheckbox are *not* in this list
		CLASS_ATTRS = "active expanded focus folder lazy radiogroup selected unselectable unselectableIgnore".split(
			" "
		),
		CLASS_ATTR_MAP = {},
		// Top-level Fancytree attributes, that can be set by dict
		TREE_ATTRS = "columns types".split(" "),
		// TREE_ATTR_MAP = {},
		// Top-level FancytreeNode attributes, that can be set by dict
		NODE_ATTRS = "checkbox expanded extraClasses folder icon iconTooltip key lazy partsel radiogroup refKey selected statusNodeType title tooltip type unselectable unselectableIgnore unselectableStatus".split(
			" "
		),
		NODE_ATTR_MAP = {},
		// Mapping of lowercase -> real name (because HTML5 data-... attribute only supports lowercase)
		NODE_ATTR_LOWERCASE_MAP = {},
		// Attribute names that should NOT be added to node.data
		NONE_NODE_DATA_MAP = {
			active: true,
			children: true,
			data: true,
			focus: true,
		};

	for (i = 0; i < CLASS_ATTRS.length; i++) {
		CLASS_ATTR_MAP[CLASS_ATTRS[i]] = true;
	}
	for (i = 0; i < NODE_ATTRS.length; i++) {
		attr = NODE_ATTRS[i];
		NODE_ATTR_MAP[attr] = true;
		if (attr !== attr.toLowerCase()) {
			NODE_ATTR_LOWERCASE_MAP[attr.toLowerCase()] = attr;
		}
	}
	// for(i=0; i<TREE_ATTRS.length; i++) {
	// 	TREE_ATTR_MAP[TREE_ATTRS[i]] = true;
	// }

	function _assert(cond, msg) {
		// TODO: see qunit.js extractStacktrace()
		if (!cond) {
			msg = msg ? ": " + msg : "";
			// consoleApply("assert", [!!cond, msg]);
			$.error("Fancytree assertion failed" + msg);
		}
	}

	_assert($.ui, "Fancytree requires jQuery UI (http://jqueryui.com)");

	function consoleApply(method, args) {
		var i,
			s,
			fn = window.console ? window.console[method] : null;

		if (fn) {
			try {
				fn.apply(window.console, args);
			} catch (e) {
				// IE 8?
				s = "";
				for (i = 0; i < args.length; i++) {
					s += args[i];
				}
				fn(s);
			}
		}
	}

	/* support: IE8 Polyfil for Date.now() */
	if (!Date.now) {
		Date.now = function now() {
			return new Date().getTime();
		};
	}

	/*Return true if x is a FancytreeNode.*/
	function _isNode(x) {
		return !!(x.tree && x.statusNodeType !== undefined);
	}

	/** Return true if dotted version string is equal or higher than requested version.
	 *
	 * See http://jsfiddle.net/mar10/FjSAN/
	 */
	function isVersionAtLeast(dottedVersion, major, minor, patch) {
		var i,
			v,
			t,
			verParts = $.map($.trim(dottedVersion).split("."), function(e) {
				return parseInt(e, 10);
			}),
			testParts = $.map(
				Array.prototype.slice.call(arguments, 1),
				function(e) {
					return parseInt(e, 10);
				}
			);

		for (i = 0; i < testParts.length; i++) {
			v = verParts[i] || 0;
			t = testParts[i] || 0;
			if (v !== t) {
				return v > t;
			}
		}
		return true;
	}

	/**
	 * Deep-merge a list of objects (but replace array-type options).
	 *
	 * jQuery's $.extend(true, ...) method does a deep merge, that also merges Arrays.
	 * This variant is used to merge extension defaults with user options, and should
	 * merge objects, but override arrays (for example the `triggerStart: [...]` option
	 * of ext-edit). Also `null` values are copied over and not skipped.
	 *
	 * See issue #876
	 *
	 * Example:
	 * _simpleDeepMerge({}, o1, o2);
	 */
	function _simpleDeepMerge() {
		var options,
			name,
			src,
			copy,
			clone,
			target = arguments[0] || {},
			i = 1,
			length = arguments.length;

		// Handle case when target is a string or something (possible in deep copy)
		if (typeof target !== "object" && !$.isFunction(target)) {
			target = {};
		}
		if (i === length) {
			throw Error("need at least two args");
		}
		for (; i < length; i++) {
			// Only deal with non-null/undefined values
			if ((options = arguments[i]) != null) {
				// Extend the base object
				for (name in options) {
					if (options.hasOwnProperty(name)) {
						src = target[name];
						copy = options[name];
						// Prevent never-ending loop
						if (target === copy) {
							continue;
						}
						// Recurse if we're merging plain objects
						// (NOTE: unlike $.extend, we don't merge arrays, but replace them)
						if (copy && $.isPlainObject(copy)) {
							clone = src && $.isPlainObject(src) ? src : {};
							// Never move original objects, clone them
							target[name] = _simpleDeepMerge(clone, copy);
							// Don't bring in undefined values
						} else if (copy !== undefined) {
							target[name] = copy;
						}
					}
				}
			}
		}
		// Return the modified object
		return target;
	}

	/** Return a wrapper that calls sub.methodName() and exposes
	 *  this             : tree
	 *  this._local      : tree.ext.EXTNAME
	 *  this._super      : base.methodName.call()
	 *  this._superApply : base.methodName.apply()
	 */
	function _makeVirtualFunction(methodName, tree, base, extension, extName) {
		// $.ui.fancytree.debug("_makeVirtualFunction", methodName, tree, base, extension, extName);
		// if(rexTestSuper && !rexTestSuper.test(func)){
		//     // extension.methodName() doesn't call _super(), so no wrapper required
		//     return func;
		// }
		// Use an immediate function as closure
		var proxy = (function() {
			var prevFunc = tree[methodName], // org. tree method or prev. proxy
				baseFunc = extension[methodName], //
				_local = tree.ext[extName],
				_super = function() {
					return prevFunc.apply(tree, arguments);
				},
				_superApply = function(args) {
					return prevFunc.apply(tree, args);
				};

			// Return the wrapper function
			return function() {
				var prevLocal = tree._local,
					prevSuper = tree._super,
					prevSuperApply = tree._superApply;

				try {
					tree._local = _local;
					tree._super = _super;
					tree._superApply = _superApply;
					return baseFunc.apply(tree, arguments);
				} finally {
					tree._local = prevLocal;
					tree._super = prevSuper;
					tree._superApply = prevSuperApply;
				}
			};
		})(); // end of Immediate Function
		return proxy;
	}

	/**
	 * Subclass `base` by creating proxy functions
	 */
	function _subclassObject(tree, base, extension, extName) {
		// $.ui.fancytree.debug("_subclassObject", tree, base, extension, extName);
		for (var attrName in extension) {
			if (typeof extension[attrName] === "function") {
				if (typeof tree[attrName] === "function") {
					// override existing method
					tree[attrName] = _makeVirtualFunction(
						attrName,
						tree,
						base,
						extension,
						extName
					);
				} else if (attrName.charAt(0) === "_") {
					// Create private methods in tree.ext.EXTENSION namespace
					tree.ext[extName][attrName] = _makeVirtualFunction(
						attrName,
						tree,
						base,
						extension,
						extName
					);
				} else {
					$.error(
						"Could not override tree." +
							attrName +
							". Use prefix '_' to create tree." +
							extName +
							"._" +
							attrName
					);
				}
			} else {
				// Create member variables in tree.ext.EXTENSION namespace
				if (attrName !== "options") {
					tree.ext[extName][attrName] = extension[attrName];
				}
			}
		}
	}

	function _getResolvedPromise(context, argArray) {
		if (context === undefined) {
			return $.Deferred(function() {
				this.resolve();
			}).promise();
		}
		return $.Deferred(function() {
			this.resolveWith(context, argArray);
		}).promise();
	}

	function _getRejectedPromise(context, argArray) {
		if (context === undefined) {
			return $.Deferred(function() {
				this.reject();
			}).promise();
		}
		return $.Deferred(function() {
			this.rejectWith(context, argArray);
		}).promise();
	}

	function _makeResolveFunc(deferred, context) {
		return function() {
			deferred.resolveWith(context);
		};
	}

	function _getElementDataAsDict($el) {
		// Evaluate 'data-NAME' attributes with special treatment for 'data-json'.
		var d = $.extend({}, $el.data()),
			json = d.json;

		delete d.fancytree; // added to container by widget factory (old jQuery UI)
		delete d.uiFancytree; // added to container by widget factory

		if (json) {
			delete d.json;
			// <li data-json='...'> is already returned as object (http://api.jquery.com/data/#data-html5)
			d = $.extend(d, json);
		}
		return d;
	}

	function _escapeTooltip(s) {
		return ("" + s).replace(REX_TOOLTIP, function(s) {
			return ENTITY_MAP[s];
		});
	}

	// TODO: use currying
	function _makeNodeTitleMatcher(s) {
		s = s.toLowerCase();
		return function(node) {
			return node.title.toLowerCase().indexOf(s) >= 0;
		};
	}

	function _makeNodeTitleStartMatcher(s) {
		var reMatch = new RegExp("^" + s, "i");
		return function(node) {
			return reMatch.test(node.title);
		};
	}

	/******************************************************************************
	 * FancytreeNode
	 */

	/**
	 * Creates a new FancytreeNode
	 *
	 * @class FancytreeNode
	 * @classdesc A FancytreeNode represents the hierarchical data model and operations.
	 *
	 * @param {FancytreeNode} parent
	 * @param {NodeData} obj
	 *
	 * @property {Fancytree} tree The tree instance
	 * @property {FancytreeNode} parent The parent node
	 * @property {string} key Node id (must be unique inside the tree)
	 * @property {string} title Display name (may contain HTML)
	 * @property {object} data Contains all extra data that was passed on node creation
	 * @property {FancytreeNode[] | null | undefined} children Array of child nodes.<br>
	 *     For lazy nodes, null or undefined means 'not yet loaded'. Use an empty array
	 *     to define a node that has no children.
	 * @property {boolean} expanded Use isExpanded(), setExpanded() to access this property.
	 * @property {string} extraClasses Additional CSS classes, added to the node's `<span>`.<br>
	 *     Note: use `node.add/remove/toggleClass()` to modify.
	 * @property {boolean} folder Folder nodes have different default icons and click behavior.<br>
	 *     Note: Also non-folders may have children.
	 * @property {string} statusNodeType null for standard nodes. Otherwise type of special system node: 'error', 'loading', 'nodata', or 'paging'.
	 * @property {boolean} lazy True if this node is loaded on demand, i.e. on first expansion.
	 * @property {boolean} selected Use isSelected(), setSelected() to access this property.
	 * @property {string} tooltip Alternative description used as hover popup
	 * @property {string} iconTooltip Description used as hover popup for icon. @since 2.27
	 * @property {string} type Node type, used with tree.types map. @since 2.27
	 */
	function FancytreeNode(parent, obj) {
		var i, l, name, cl;

		this.parent = parent;
		this.tree = parent.tree;
		this.ul = null;
		this.li = null; // <li id='key' ftnode=this> tag
		this.statusNodeType = null; // if this is a temp. node to display the status of its parent
		this._isLoading = false; // if this node itself is loading
		this._error = null; // {message: '...'} if a load error occurred
		this.data = {};

		// TODO: merge this code with node.toDict()
		// copy attributes from obj object
		for (i = 0, l = NODE_ATTRS.length; i < l; i++) {
			name = NODE_ATTRS[i];
			this[name] = obj[name];
		}
		// unselectableIgnore and unselectableStatus imply unselectable
		if (
			this.unselectableIgnore != null ||
			this.unselectableStatus != null
		) {
			this.unselectable = true;
		}
		if (obj.hideCheckbox) {
			$.error(
				"'hideCheckbox' node option was removed in v2.23.0: use 'checkbox: false'"
			);
		}
		// node.data += obj.data
		if (obj.data) {
			$.extend(this.data, obj.data);
		}
		// Copy all other attributes to this.data.NAME
		for (name in obj) {
			if (
				!NODE_ATTR_MAP[name] &&
				!$.isFunction(obj[name]) &&
				!NONE_NODE_DATA_MAP[name]
			) {
				// node.data.NAME = obj.NAME
				this.data[name] = obj[name];
			}
		}

		// Fix missing key
		if (this.key == null) {
			// test for null OR undefined
			if (this.tree.options.defaultKey) {
				this.key = this.tree.options.defaultKey(this);
				_assert(this.key, "defaultKey() must return a unique key");
			} else {
				this.key = "_" + FT._nextNodeKey++;
			}
		} else {
			this.key = "" + this.key; // Convert to string (#217)
		}

		// Fix tree.activeNode
		// TODO: not elegant: we use obj.active as marker to set tree.activeNode
		// when loading from a dictionary.
		if (obj.active) {
			_assert(
				this.tree.activeNode === null,
				"only one active node allowed"
			);
			this.tree.activeNode = this;
		}
		if (obj.selected) {
			// #186
			this.tree.lastSelectedNode = this;
		}
		// TODO: handle obj.focus = true

		// Create child nodes
		cl = obj.children;
		if (cl) {
			if (cl.length) {
				this._setChildren(cl);
			} else {
				// if an empty array was passed for a lazy node, keep it, in order to mark it 'loaded'
				this.children = this.lazy ? [] : null;
			}
		} else {
			this.children = null;
		}
		// Add to key/ref map (except for root node)
		//	if( parent ) {
		this.tree._callHook("treeRegisterNode", this.tree, true, this);
		//	}
	}

	FancytreeNode.prototype = /** @lends FancytreeNode# */ {
		/* Return the direct child FancytreeNode with a given key, index. */
		_findDirectChild: function(ptr) {
			var i,
				l,
				cl = this.children;

			if (cl) {
				if (typeof ptr === "string") {
					for (i = 0, l = cl.length; i < l; i++) {
						if (cl[i].key === ptr) {
							return cl[i];
						}
					}
				} else if (typeof ptr === "number") {
					return this.children[ptr];
				} else if (ptr.parent === this) {
					return ptr;
				}
			}
			return null;
		},
		// TODO: activate()
		// TODO: activateSilently()
		/* Internal helper called in recursive addChildren sequence.*/
		_setChildren: function(children) {
			_assert(
				children && (!this.children || this.children.length === 0),
				"only init supported"
			);
			this.children = [];
			for (var i = 0, l = children.length; i < l; i++) {
				this.children.push(new FancytreeNode(this, children[i]));
			}
			this.tree._callHook(
				"treeStructureChanged",
				this.tree,
				"setChildren"
			);
		},
		/**
		 * Append (or insert) a list of child nodes.
		 *
		 * @param {NodeData[]} children array of child node definitions (also single child accepted)
		 * @param {FancytreeNode | string | Integer} [insertBefore] child node (or key or index of such).
		 *     If omitted, the new children are appended.
		 * @returns {FancytreeNode} first child added
		 *
		 * @see FancytreeNode#applyPatch
		 */
		addChildren: function(children, insertBefore) {
			var i,
				l,
				pos,
				origFirstChild = this.getFirstChild(),
				origLastChild = this.getLastChild(),
				firstNode = null,
				nodeList = [];

			if ($.isPlainObject(children)) {
				children = [children];
			}
			if (!this.children) {
				this.children = [];
			}
			for (i = 0, l = children.length; i < l; i++) {
				nodeList.push(new FancytreeNode(this, children[i]));
			}
			firstNode = nodeList[0];
			if (insertBefore == null) {
				this.children = this.children.concat(nodeList);
			} else {
				// Returns null if insertBefore is not a direct child:
				insertBefore = this._findDirectChild(insertBefore);
				pos = $.inArray(insertBefore, this.children);
				_assert(pos >= 0, "insertBefore must be an existing child");
				// insert nodeList after children[pos]
				this.children.splice.apply(
					this.children,
					[pos, 0].concat(nodeList)
				);
			}
			if (origFirstChild && !insertBefore) {
				// #708: Fast path -- don't render every child of root, just the new ones!
				// #723, #729: but only if it's appended to an existing child list
				for (i = 0, l = nodeList.length; i < l; i++) {
					nodeList[i].render(); // New nodes were never rendered before
				}
				// Adjust classes where status may have changed
				// Has a first child
				if (origFirstChild !== this.getFirstChild()) {
					// Different first child -- recompute classes
					origFirstChild.renderStatus();
				}
				if (origLastChild !== this.getLastChild()) {
					// Different last child -- recompute classes
					origLastChild.renderStatus();
				}
			} else if (!this.parent || this.parent.ul || this.tr) {
				// render if the parent was rendered (or this is a root node)
				this.render();
			}
			if (this.tree.options.selectMode === 3) {
				this.fixSelection3FromEndNodes();
			}
			this.triggerModifyChild(
				"add",
				nodeList.length === 1 ? nodeList[0] : null
			);
			return firstNode;
		},
		/**
		 * Add class to node's span tag and to .extraClasses.
		 *
		 * @param {string} className class name
		 *
		 * @since 2.17
		 */
		addClass: function(className) {
			return this.toggleClass(className, true);
		},
		/**
		 * Append or prepend a node, or append a child node.
		 *
		 * This a convenience function that calls addChildren()
		 *
		 * @param {NodeData} node node definition
		 * @param {string} [mode=child] 'before', 'after', 'firstChild', or 'child' ('over' is a synonym for 'child')
		 * @returns {FancytreeNode} new node
		 */
		addNode: function(node, mode) {
			if (mode === undefined || mode === "over") {
				mode = "child";
			}
			switch (mode) {
				case "after":
					return this.getParent().addChildren(
						node,
						this.getNextSibling()
					);
				case "before":
					return this.getParent().addChildren(node, this);
				case "firstChild":
					// Insert before the first child if any
					var insertBefore = this.children ? this.children[0] : null;
					return this.addChildren(node, insertBefore);
				case "child":
				case "over":
					return this.addChildren(node);
			}
			_assert(false, "Invalid mode: " + mode);
		},
		/**Add child status nodes that indicate 'More...', etc.
		 *
		 * This also maintains the node's `partload` property.
		 * @param {boolean|object} node optional node definition. Pass `false` to remove all paging nodes.
		 * @param {string} [mode='child'] 'child'|firstChild'
		 * @since 2.15
		 */
		addPagingNode: function(node, mode) {
			var i, n;

			mode = mode || "child";
			if (node === false) {
				for (i = this.children.length - 1; i >= 0; i--) {
					n = this.children[i];
					if (n.statusNodeType === "paging") {
						this.removeChild(n);
					}
				}
				this.partload = false;
				return;
			}
			node = $.extend(
				{
					title: this.tree.options.strings.moreData,
					statusNodeType: "paging",
					icon: false,
				},
				node
			);
			this.partload = true;
			return this.addNode(node, mode);
		},
		/**
		 * Append new node after this.
		 *
		 * This a convenience function that calls addNode(node, 'after')
		 *
		 * @param {NodeData} node node definition
		 * @returns {FancytreeNode} new node
		 */
		appendSibling: function(node) {
			return this.addNode(node, "after");
		},
		/**
		 * (experimental) Apply a modification (or navigation) operation.
		 *
		 * @param {string} cmd
		 * @param {object} [opts]
		 * @see Fancytree#applyCommand
		 * @since 2.32
		 */
		applyCommand: function(cmd, opts) {
			return this.tree.applyCommand(cmd, this, opts);
		},
		/**
		 * Modify existing child nodes.
		 *
		 * @param {NodePatch} patch
		 * @returns {$.Promise}
		 * @see FancytreeNode#addChildren
		 */
		applyPatch: function(patch) {
			// patch [key, null] means 'remove'
			if (patch === null) {
				this.remove();
				return _getResolvedPromise(this);
			}
			// TODO: make sure that root node is not collapsed or modified
			// copy (most) attributes to node.ATTR or node.data.ATTR
			var name,
				promise,
				v,
				IGNORE_MAP = { children: true, expanded: true, parent: true }; // TODO: should be global

			for (name in patch) {
				if (patch.hasOwnProperty(name)) {
					v = patch[name];
					if (!IGNORE_MAP[name] && !$.isFunction(v)) {
						if (NODE_ATTR_MAP[name]) {
							this[name] = v;
						} else {
							this.data[name] = v;
						}
					}
				}
			}
			// Remove and/or create children
			if (patch.hasOwnProperty("children")) {
				this.removeChildren();
				if (patch.children) {
					// only if not null and not empty list
					// TODO: addChildren instead?
					this._setChildren(patch.children);
				}
				// TODO: how can we APPEND or INSERT child nodes?
			}
			if (this.isVisible()) {
				this.renderTitle();
				this.renderStatus();
			}
			// Expand collapse (final step, since this may be async)
			if (patch.hasOwnProperty("expanded")) {
				promise = this.setExpanded(patch.expanded);
			} else {
				promise = _getResolvedPromise(this);
			}
			return promise;
		},
		/** Collapse all sibling nodes.
		 * @returns {$.Promise}
		 */
		collapseSiblings: function() {
			return this.tree._callHook("nodeCollapseSiblings", this);
		},
		/** Copy this node as sibling or child of `node`.
		 *
		 * @param {FancytreeNode} node source node
		 * @param {string} [mode=child] 'before' | 'after' | 'child'
		 * @param {Function} [map] callback function(NodeData) that could modify the new node
		 * @returns {FancytreeNode} new
		 */
		copyTo: function(node, mode, map) {
			return node.addNode(this.toDict(true, map), mode);
		},
		/** Count direct and indirect children.
		 *
		 * @param {boolean} [deep=true] pass 'false' to only count direct children
		 * @returns {int} number of child nodes
		 */
		countChildren: function(deep) {
			var cl = this.children,
				i,
				l,
				n;
			if (!cl) {
				return 0;
			}
			n = cl.length;
			if (deep !== false) {
				for (i = 0, l = n; i < l; i++) {
					n += cl[i].countChildren();
				}
			}
			return n;
		},
		// TODO: deactivate()
		/** Write to browser console if debugLevel >= 4 (prepending node info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		debug: function(msg) {
			if (this.tree.options.debugLevel >= 4) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("log", arguments);
			}
		},
		/** Deprecated.
		 * @deprecated since 2014-02-16. Use resetLazy() instead.
		 */
		discard: function() {
			this.warn(
				"FancytreeNode.discard() is deprecated since 2014-02-16. Use .resetLazy() instead."
			);
			return this.resetLazy();
		},
		/** Remove DOM elements for all descendents. May be called on .collapse event
		 * to keep the DOM small.
		 * @param {boolean} [includeSelf=false]
		 */
		discardMarkup: function(includeSelf) {
			var fn = includeSelf ? "nodeRemoveMarkup" : "nodeRemoveChildMarkup";
			this.tree._callHook(fn, this);
		},
		/** Write error to browser console if debugLevel >= 1 (prepending tree info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		error: function(msg) {
			if (this.tree.options.debugLevel >= 1) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("error", arguments);
			}
		},
		/**Find all nodes that match condition (excluding self).
		 *
		 * @param {string | function(node)} match title string to search for, or a
		 *     callback function that returns `true` if a node is matched.
		 * @returns {FancytreeNode[]} array of nodes (may be empty)
		 */
		findAll: function(match) {
			match = $.isFunction(match) ? match : _makeNodeTitleMatcher(match);
			var res = [];
			this.visit(function(n) {
				if (match(n)) {
					res.push(n);
				}
			});
			return res;
		},
		/**Find first node that matches condition (excluding self).
		 *
		 * @param {string | function(node)} match title string to search for, or a
		 *     callback function that returns `true` if a node is matched.
		 * @returns {FancytreeNode} matching node or null
		 * @see FancytreeNode#findAll
		 */
		findFirst: function(match) {
			match = $.isFunction(match) ? match : _makeNodeTitleMatcher(match);
			var res = null;
			this.visit(function(n) {
				if (match(n)) {
					res = n;
					return false;
				}
			});
			return res;
		},
		/** Find a node relative to self.
		 *
		 * @param {number|string} where The keyCode that would normally trigger this move,
		 *		or a keyword ('down', 'first', 'last', 'left', 'parent', 'right', 'up').
		 * @returns {FancytreeNode}
		 * @since v2.31
		 */
		findRelatedNode: function(where, includeHidden) {
			return this.tree.findRelatedNode(this, where, includeHidden);
		},
		/* Apply selection state (internal use only) */
		_changeSelectStatusAttrs: function(state) {
			var changed = false,
				opts = this.tree.options,
				unselectable = FT.evalOption(
					"unselectable",
					this,
					this,
					opts,
					false
				),
				unselectableStatus = FT.evalOption(
					"unselectableStatus",
					this,
					this,
					opts,
					undefined
				);

			if (unselectable && unselectableStatus != null) {
				state = unselectableStatus;
			}
			switch (state) {
				case false:
					changed = this.selected || this.partsel;
					this.selected = false;
					this.partsel = false;
					break;
				case true:
					changed = !this.selected || !this.partsel;
					this.selected = true;
					this.partsel = true;
					break;
				case undefined:
					changed = this.selected || !this.partsel;
					this.selected = false;
					this.partsel = true;
					break;
				default:
					_assert(false, "invalid state: " + state);
			}
			// this.debug("fixSelection3AfterLoad() _changeSelectStatusAttrs()", state, changed);
			if (changed) {
				this.renderStatus();
			}
			return changed;
		},
		/**
		 * Fix selection status, after this node was (de)selected in multi-hier mode.
		 * This includes (de)selecting all children.
		 */
		fixSelection3AfterClick: function(callOpts) {
			var flag = this.isSelected();

			// this.debug("fixSelection3AfterClick()");

			this.visit(function(node) {
				node._changeSelectStatusAttrs(flag);
				if (node.radiogroup) {
					// #931: don't (de)select this branch
					return "skip";
				}
			});
			this.fixSelection3FromEndNodes(callOpts);
		},
		/**
		 * Fix selection status for multi-hier mode.
		 * Only end-nodes are considered to update the descendants branch and parents.
		 * Should be called after this node has loaded new children or after
		 * children have been modified using the API.
		 */
		fixSelection3FromEndNodes: function(callOpts) {
			var opts = this.tree.options;

			// this.debug("fixSelection3FromEndNodes()");
			_assert(opts.selectMode === 3, "expected selectMode 3");

			// Visit all end nodes and adjust their parent's `selected` and `partsel`
			// attributes. Return selection state true, false, or undefined.
			function _walk(node) {
				var i,
					l,
					child,
					s,
					state,
					allSelected,
					someSelected,
					unselIgnore,
					unselState,
					children = node.children;

				if (children && children.length) {
					// check all children recursively
					allSelected = true;
					someSelected = false;

					for (i = 0, l = children.length; i < l; i++) {
						child = children[i];
						// the selection state of a node is not relevant; we need the end-nodes
						s = _walk(child);
						// if( !child.unselectableIgnore ) {
						unselIgnore = FT.evalOption(
							"unselectableIgnore",
							child,
							child,
							opts,
							false
						);
						if (!unselIgnore) {
							if (s !== false) {
								someSelected = true;
							}
							if (s !== true) {
								allSelected = false;
							}
						}
					}
					// eslint-disable-next-line no-nested-ternary
					state = allSelected
						? true
						: someSelected
						? undefined
						: false;
				} else {
					// This is an end-node: simply report the status
					unselState = FT.evalOption(
						"unselectableStatus",
						node,
						node,
						opts,
						undefined
					);
					state = unselState == null ? !!node.selected : !!unselState;
				}
				// #939: Keep a `partsel` flag that was explicitly set on a lazy node
				if (
					node.partsel &&
					!node.selected &&
					node.lazy &&
					node.children == null
				) {
					state = undefined;
				}
				node._changeSelectStatusAttrs(state);
				return state;
			}
			_walk(this);

			// Update parent's state
			this.visitParents(function(node) {
				var i,
					l,
					child,
					state,
					unselIgnore,
					unselState,
					children = node.children,
					allSelected = true,
					someSelected = false;

				for (i = 0, l = children.length; i < l; i++) {
					child = children[i];
					unselIgnore = FT.evalOption(
						"unselectableIgnore",
						child,
						child,
						opts,
						false
					);
					if (!unselIgnore) {
						unselState = FT.evalOption(
							"unselectableStatus",
							child,
							child,
							opts,
							undefined
						);
						state =
							unselState == null
								? !!child.selected
								: !!unselState;
						// When fixing the parents, we trust the sibling status (i.e.
						// we don't recurse)
						if (state || child.partsel) {
							someSelected = true;
						}
						if (!state) {
							allSelected = false;
						}
					}
				}
				// eslint-disable-next-line no-nested-ternary
				state = allSelected ? true : someSelected ? undefined : false;
				node._changeSelectStatusAttrs(state);
			});
		},
		// TODO: focus()
		/**
		 * Update node data. If dict contains 'children', then also replace
		 * the hole sub tree.
		 * @param {NodeData} dict
		 *
		 * @see FancytreeNode#addChildren
		 * @see FancytreeNode#applyPatch
		 */
		fromDict: function(dict) {
			// copy all other attributes to this.data.xxx
			for (var name in dict) {
				if (NODE_ATTR_MAP[name]) {
					// node.NAME = dict.NAME
					this[name] = dict[name];
				} else if (name === "data") {
					// node.data += dict.data
					$.extend(this.data, dict.data);
				} else if (
					!$.isFunction(dict[name]) &&
					!NONE_NODE_DATA_MAP[name]
				) {
					// node.data.NAME = dict.NAME
					this.data[name] = dict[name];
				}
			}
			if (dict.children) {
				// recursively set children and render
				this.removeChildren();
				this.addChildren(dict.children);
			}
			this.renderTitle();
			/*
			var children = dict.children;
			if(children === undefined){
				this.data = $.extend(this.data, dict);
				this.render();
				return;
			}
			dict = $.extend({}, dict);
			dict.children = undefined;
			this.data = $.extend(this.data, dict);
			this.removeChildren();
			this.addChild(children);
			*/
		},
		/** Return the list of child nodes (undefined for unexpanded lazy nodes).
		 * @returns {FancytreeNode[] | undefined}
		 */
		getChildren: function() {
			if (this.hasChildren() === undefined) {
				// TODO: only required for lazy nodes?
				return undefined; // Lazy node: unloaded, currently loading, or load error
			}
			return this.children;
		},
		/** Return the first child node or null.
		 * @returns {FancytreeNode | null}
		 */
		getFirstChild: function() {
			return this.children ? this.children[0] : null;
		},
		/** Return the 0-based child index.
		 * @returns {int}
		 */
		getIndex: function() {
			// return this.parent.children.indexOf(this);
			return $.inArray(this, this.parent.children); // indexOf doesn't work in IE7
		},
		/** Return the hierarchical child index (1-based, e.g. '3.2.4').
		 * @param {string} [separator="."]
		 * @param {int} [digits=1]
		 * @returns {string}
		 */
		getIndexHier: function(separator, digits) {
			separator = separator || ".";
			var s,
				res = [];
			$.each(this.getParentList(false, true), function(i, o) {
				s = "" + (o.getIndex() + 1);
				if (digits) {
					// prepend leading zeroes
					s = ("0000000" + s).substr(-digits);
				}
				res.push(s);
			});
			return res.join(separator);
		},
		/** Return the parent keys separated by options.keyPathSeparator, e.g. "/id_1/id_17/id_32".
		 *
		 * (Unlike `node.getPath()`, this method prepends a "/" and inverts the first argument.)
		 *
		 * @see FancytreeNode#getPath
		 * @param {boolean} [excludeSelf=false]
		 * @returns {string}
		 */
		getKeyPath: function(excludeSelf) {
			var sep = this.tree.options.keyPathSeparator;

			return sep + this.getPath(!excludeSelf, "key", sep);
		},
		/** Return the last child of this node or null.
		 * @returns {FancytreeNode | null}
		 */
		getLastChild: function() {
			return this.children
				? this.children[this.children.length - 1]
				: null;
		},
		/** Return node depth. 0: System root node, 1: visible top-level node, 2: first sub-level, ... .
		 * @returns {int}
		 */
		getLevel: function() {
			var level = 0,
				dtn = this.parent;
			while (dtn) {
				level++;
				dtn = dtn.parent;
			}
			return level;
		},
		/** Return the successor node (under the same parent) or null.
		 * @returns {FancytreeNode | null}
		 */
		getNextSibling: function() {
			// TODO: use indexOf, if available: (not in IE6)
			if (this.parent) {
				var i,
					l,
					ac = this.parent.children;

				for (i = 0, l = ac.length - 1; i < l; i++) {
					// up to length-2, so next(last) = null
					if (ac[i] === this) {
						return ac[i + 1];
					}
				}
			}
			return null;
		},
		/** Return the parent node (null for the system root node).
		 * @returns {FancytreeNode | null}
		 */
		getParent: function() {
			// TODO: return null for top-level nodes?
			return this.parent;
		},
		/** Return an array of all parent nodes (top-down).
		 * @param {boolean} [includeRoot=false] Include the invisible system root node.
		 * @param {boolean} [includeSelf=false] Include the node itself.
		 * @returns {FancytreeNode[]}
		 */
		getParentList: function(includeRoot, includeSelf) {
			var l = [],
				dtn = includeSelf ? this : this.parent;
			while (dtn) {
				if (includeRoot || dtn.parent) {
					l.unshift(dtn);
				}
				dtn = dtn.parent;
			}
			return l;
		},
		/** Return a string representing the hierachical node path, e.g. "a/b/c".
		 * @param {boolean} [includeSelf=true]
		 * @param {string | function} [part="title"] node property name or callback
		 * @param {string} [separator="/"]
		 * @returns {string}
		 * @since v2.31
		 */
		getPath: function(includeSelf, part, separator) {
			includeSelf = includeSelf !== false;
			part = part || "title";
			separator = separator || "/";

			var val,
				path = [],
				isFunc = $.isFunction(part);

			this.visitParents(function(n) {
				if (n.parent) {
					val = isFunc ? part(n) : n[part];
					path.unshift(val);
				}
			}, includeSelf);
			return path.join(separator);
		},
		/** Return the predecessor node (under the same parent) or null.
		 * @returns {FancytreeNode | null}
		 */
		getPrevSibling: function() {
			if (this.parent) {
				var i,
					l,
					ac = this.parent.children;

				for (i = 1, l = ac.length; i < l; i++) {
					// start with 1, so prev(first) = null
					if (ac[i] === this) {
						return ac[i - 1];
					}
				}
			}
			return null;
		},
		/**
		 * Return an array of selected descendant nodes.
		 * @param {boolean} [stopOnParents=false] only return the topmost selected
		 *     node (useful with selectMode 3)
		 * @returns {FancytreeNode[]}
		 */
		getSelectedNodes: function(stopOnParents) {
			var nodeList = [];
			this.visit(function(node) {
				if (node.selected) {
					nodeList.push(node);
					if (stopOnParents === true) {
						return "skip"; // stop processing this branch
					}
				}
			});
			return nodeList;
		},
		/** Return true if node has children. Return undefined if not sure, i.e. the node is lazy and not yet loaded).
		 * @returns {boolean | undefined}
		 */
		hasChildren: function() {
			if (this.lazy) {
				if (this.children == null) {
					// null or undefined: Not yet loaded
					return undefined;
				} else if (this.children.length === 0) {
					// Loaded, but response was empty
					return false;
				} else if (
					this.children.length === 1 &&
					this.children[0].isStatusNode()
				) {
					// Currently loading or load error
					return undefined;
				}
				return true;
			}
			return !!(this.children && this.children.length);
		},
		/**
		 * Return true if node has `className` defined in .extraClasses.
		 *
		 * @param {string} className class name (separate multiple classes by space)
		 * @returns {boolean}
		 *
		 * @since 2.32
		 */
		hasClass: function(className) {
			return (
				(" " + (this.extraClasses || "") + " ").indexOf(
					" " + className + " "
				) >= 0
			);
		},
		/** Return true if node has keyboard focus.
		 * @returns {boolean}
		 */
		hasFocus: function() {
			return this.tree.hasFocus() && this.tree.focusNode === this;
		},
		/** Write to browser console if debugLevel >= 3 (prepending node info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		info: function(msg) {
			if (this.tree.options.debugLevel >= 3) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("info", arguments);
			}
		},
		/** Return true if node is active (see also FancytreeNode#isSelected).
		 * @returns {boolean}
		 */
		isActive: function() {
			return this.tree.activeNode === this;
		},
		/** Return true if node is vertically below `otherNode`, i.e. rendered in a subsequent row.
		 * @param {FancytreeNode} otherNode
		 * @returns {boolean}
		 * @since 2.28
		 */
		isBelowOf: function(otherNode) {
			return this.getIndexHier(".", 5) > otherNode.getIndexHier(".", 5);
		},
		/** Return true if node is a direct child of otherNode.
		 * @param {FancytreeNode} otherNode
		 * @returns {boolean}
		 */
		isChildOf: function(otherNode) {
			return this.parent && this.parent === otherNode;
		},
		/** Return true, if node is a direct or indirect sub node of otherNode.
		 * @param {FancytreeNode} otherNode
		 * @returns {boolean}
		 */
		isDescendantOf: function(otherNode) {
			if (!otherNode || otherNode.tree !== this.tree) {
				return false;
			}
			var p = this.parent;
			while (p) {
				if (p === otherNode) {
					return true;
				}
				if (p === p.parent) {
					$.error("Recursive parent link: " + p);
				}
				p = p.parent;
			}
			return false;
		},
		/** Return true if node is expanded.
		 * @returns {boolean}
		 */
		isExpanded: function() {
			return !!this.expanded;
		},
		/** Return true if node is the first node of its parent's children.
		 * @returns {boolean}
		 */
		isFirstSibling: function() {
			var p = this.parent;
			return !p || p.children[0] === this;
		},
		/** Return true if node is a folder, i.e. has the node.folder attribute set.
		 * @returns {boolean}
		 */
		isFolder: function() {
			return !!this.folder;
		},
		/** Return true if node is the last node of its parent's children.
		 * @returns {boolean}
		 */
		isLastSibling: function() {
			var p = this.parent;
			return !p || p.children[p.children.length - 1] === this;
		},
		/** Return true if node is lazy (even if data was already loaded)
		 * @returns {boolean}
		 */
		isLazy: function() {
			return !!this.lazy;
		},
		/** Return true if node is lazy and loaded. For non-lazy nodes always return true.
		 * @returns {boolean}
		 */
		isLoaded: function() {
			return !this.lazy || this.hasChildren() !== undefined; // Also checks if the only child is a status node
		},
		/** Return true if children are currently beeing loaded, i.e. a Ajax request is pending.
		 * @returns {boolean}
		 */
		isLoading: function() {
			return !!this._isLoading;
		},
		/*
		 * @deprecated since v2.4.0:  Use isRootNode() instead
		 */
		isRoot: function() {
			return this.isRootNode();
		},
		/** Return true if node is partially selected (tri-state).
		 * @returns {boolean}
		 * @since 2.23
		 */
		isPartsel: function() {
			return !this.selected && !!this.partsel;
		},
		/** (experimental) Return true if this is partially loaded.
		 * @returns {boolean}
		 * @since 2.15
		 */
		isPartload: function() {
			return !!this.partload;
		},
		/** Return true if this is the (invisible) system root node.
		 * @returns {boolean}
		 * @since 2.4
		 */
		isRootNode: function() {
			return this.tree.rootNode === this;
		},
		/** Return true if node is selected, i.e. has a checkmark set (see also FancytreeNode#isActive).
		 * @returns {boolean}
		 */
		isSelected: function() {
			return !!this.selected;
		},
		/** Return true if this node is a temporarily generated system node like
		 * 'loading', 'paging', or 'error' (node.statusNodeType contains the type).
		 * @returns {boolean}
		 */
		isStatusNode: function() {
			return !!this.statusNodeType;
		},
		/** Return true if this node is a status node of type 'paging'.
		 * @returns {boolean}
		 * @since 2.15
		 */
		isPagingNode: function() {
			return this.statusNodeType === "paging";
		},
		/** Return true if this a top level node, i.e. a direct child of the (invisible) system root node.
		 * @returns {boolean}
		 * @since 2.4
		 */
		isTopLevel: function() {
			return this.tree.rootNode === this.parent;
		},
		/** Return true if node is lazy and not yet loaded. For non-lazy nodes always return false.
		 * @returns {boolean}
		 */
		isUndefined: function() {
			return this.hasChildren() === undefined; // also checks if the only child is a status node
		},
		/** Return true if all parent nodes are expanded. Note: this does not check
		 * whether the node is scrolled into the visible part of the screen.
		 * @returns {boolean}
		 */
		isVisible: function() {
			var i,
				l,
				n,
				hasFilter = this.tree.enableFilter,
				parents = this.getParentList(false, false);

			// TODO: check $(n.span).is(":visible")
			// i.e. return false for nodes (but not parents) that are hidden
			// by a filter
			if (hasFilter && !this.match && !this.subMatchCount) {
				// this.debug( "isVisible: HIDDEN (" + hasFilter + ", " + this.match + ", " + this.match + ")" );
				return false;
			}

			for (i = 0, l = parents.length; i < l; i++) {
				n = parents[i];

				if (!n.expanded) {
					// this.debug("isVisible: HIDDEN (parent collapsed)");
					return false;
				}
				// if (hasFilter && !n.match && !n.subMatchCount) {
				// 	this.debug("isVisible: HIDDEN (" + hasFilter + ", " + this.match + ", " + this.match + ")");
				// 	return false;
				// }
			}
			// this.debug("isVisible: VISIBLE");
			return true;
		},
		/** Deprecated.
		 * @deprecated since 2014-02-16: use load() instead.
		 */
		lazyLoad: function(discard) {
			this.warn(
				"FancytreeNode.lazyLoad() is deprecated since 2014-02-16. Use .load() instead."
			);
			return this.load(discard);
		},
		/**
		 * Load all children of a lazy node if neccessary. The <i>expanded</i> state is maintained.
		 * @param {boolean} [forceReload=false] Pass true to discard any existing nodes before. Otherwise this method does nothing if the node was already loaded.
		 * @returns {$.Promise}
		 */
		load: function(forceReload) {
			var res,
				source,
				self = this,
				wasExpanded = this.isExpanded();

			_assert(this.isLazy(), "load() requires a lazy node");
			// _assert( forceReload || this.isUndefined(), "Pass forceReload=true to re-load a lazy node" );
			if (!forceReload && !this.isUndefined()) {
				return _getResolvedPromise(this);
			}
			if (this.isLoaded()) {
				this.resetLazy(); // also collapses
			}
			// This method is also called by setExpanded() and loadKeyPath(), so we
			// have to avoid recursion.
			source = this.tree._triggerNodeEvent("lazyLoad", this);
			if (source === false) {
				// #69
				return _getResolvedPromise(this);
			}
			_assert(
				typeof source !== "boolean",
				"lazyLoad event must return source in data.result"
			);
			res = this.tree._callHook("nodeLoadChildren", this, source);
			if (wasExpanded) {
				this.expanded = true;
				res.always(function() {
					self.render();
				});
			} else {
				res.always(function() {
					self.renderStatus(); // fix expander icon to 'loaded'
				});
			}
			return res;
		},
		/** Expand all parents and optionally scroll into visible area as neccessary.
		 * Promise is resolved, when lazy loading and animations are done.
		 * @param {object} [opts] passed to `setExpanded()`.
		 *     Defaults to {noAnimation: false, noEvents: false, scrollIntoView: true}
		 * @returns {$.Promise}
		 */
		makeVisible: function(opts) {
			var i,
				self = this,
				deferreds = [],
				dfd = new $.Deferred(),
				parents = this.getParentList(false, false),
				len = parents.length,
				effects = !(opts && opts.noAnimation === true),
				scroll = !(opts && opts.scrollIntoView === false);

			// Expand bottom-up, so only the top node is animated
			for (i = len - 1; i >= 0; i--) {
				// self.debug("pushexpand" + parents[i]);
				deferreds.push(parents[i].setExpanded(true, opts));
			}
			$.when.apply($, deferreds).done(function() {
				// All expands have finished
				// self.debug("expand DONE", scroll);
				if (scroll) {
					self.scrollIntoView(effects).done(function() {
						// self.debug("scroll DONE");
						dfd.resolve();
					});
				} else {
					dfd.resolve();
				}
			});
			return dfd.promise();
		},
		/** Move this node to targetNode.
		 *  @param {FancytreeNode} targetNode
		 *  @param {string} mode <pre>
		 *      'child': append this node as last child of targetNode.
		 *               This is the default. To be compatble with the D'n'd
		 *               hitMode, we also accept 'over'.
		 *      'firstChild': add this node as first child of targetNode.
		 *      'before': add this node as sibling before targetNode.
		 *      'after': add this node as sibling after targetNode.</pre>
		 *  @param {function} [map] optional callback(FancytreeNode) to allow modifcations
		 */
		moveTo: function(targetNode, mode, map) {
			if (mode === undefined || mode === "over") {
				mode = "child";
			} else if (mode === "firstChild") {
				if (targetNode.children && targetNode.children.length) {
					mode = "before";
					targetNode = targetNode.children[0];
				} else {
					mode = "child";
				}
			}
			var pos,
				tree = this.tree,
				prevParent = this.parent,
				targetParent =
					mode === "child" ? targetNode : targetNode.parent;

			if (this === targetNode) {
				return;
			} else if (!this.parent) {
				$.error("Cannot move system root");
			} else if (targetParent.isDescendantOf(this)) {
				$.error("Cannot move a node to its own descendant");
			}
			if (targetParent !== prevParent) {
				prevParent.triggerModifyChild("remove", this);
			}
			// Unlink this node from current parent
			if (this.parent.children.length === 1) {
				if (this.parent === targetParent) {
					return; // #258
				}
				this.parent.children = this.parent.lazy ? [] : null;
				this.parent.expanded = false;
			} else {
				pos = $.inArray(this, this.parent.children);
				_assert(pos >= 0, "invalid source parent");
				this.parent.children.splice(pos, 1);
			}
			// Remove from source DOM parent
			// if(this.parent.ul){
			// 	this.parent.ul.removeChild(this.li);
			// }

			// Insert this node to target parent's child list
			this.parent = targetParent;
			if (targetParent.hasChildren()) {
				switch (mode) {
					case "child":
						// Append to existing target children
						targetParent.children.push(this);
						break;
					case "before":
						// Insert this node before target node
						pos = $.inArray(targetNode, targetParent.children);
						_assert(pos >= 0, "invalid target parent");
						targetParent.children.splice(pos, 0, this);
						break;
					case "after":
						// Insert this node after target node
						pos = $.inArray(targetNode, targetParent.children);
						_assert(pos >= 0, "invalid target parent");
						targetParent.children.splice(pos + 1, 0, this);
						break;
					default:
						$.error("Invalid mode " + mode);
				}
			} else {
				targetParent.children = [this];
			}
			// Parent has no <ul> tag yet:
			// if( !targetParent.ul ) {
			// 	// This is the parent's first child: create UL tag
			// 	// (Hidden, because it will be
			// 	targetParent.ul = document.createElement("ul");
			// 	targetParent.ul.style.display = "none";
			// 	targetParent.li.appendChild(targetParent.ul);
			// }
			// // Issue 319: Add to target DOM parent (only if node was already rendered(expanded))
			// if(this.li){
			// 	targetParent.ul.appendChild(this.li);
			// }

			// Let caller modify the nodes
			if (map) {
				targetNode.visit(map, true);
			}
			if (targetParent === prevParent) {
				targetParent.triggerModifyChild("move", this);
			} else {
				// prevParent.triggerModifyChild("remove", this);
				targetParent.triggerModifyChild("add", this);
			}
			// Handle cross-tree moves
			if (tree !== targetNode.tree) {
				// Fix node.tree for all source nodes
				// 	_assert(false, "Cross-tree move is not yet implemented.");
				this.warn("Cross-tree moveTo is experimental!");
				this.visit(function(n) {
					// TODO: fix selection state and activation, ...
					n.tree = targetNode.tree;
				}, true);
			}

			// A collaposed node won't re-render children, so we have to remove it manually
			// if( !targetParent.expanded ){
			//   prevParent.ul.removeChild(this.li);
			// }
			tree._callHook("treeStructureChanged", tree, "moveTo");

			// Update HTML markup
			if (!prevParent.isDescendantOf(targetParent)) {
				prevParent.render();
			}
			if (
				!targetParent.isDescendantOf(prevParent) &&
				targetParent !== prevParent
			) {
				targetParent.render();
			}
			// TODO: fix selection state
			// TODO: fix active state

			/*
			var tree = this.tree;
			var opts = tree.options;
			var pers = tree.persistence;

			// Always expand, if it's below minExpandLevel
			// tree.logDebug ("%s._addChildNode(%o), l=%o", this, ftnode, ftnode.getLevel());
			if ( opts.minExpandLevel >= ftnode.getLevel() ) {
				// tree.logDebug ("Force expand for %o", ftnode);
				this.bExpanded = true;
			}

			// In multi-hier mode, update the parents selection state
			// DT issue #82: only if not initializing, because the children may not exist yet
			// if( !ftnode.data.isStatusNode() && opts.selectMode==3 && !isInitializing )
			// 	ftnode._fixSelectionState();

			// In multi-hier mode, update the parents selection state
			if( ftnode.bSelected && opts.selectMode==3 ) {
				var p = this;
				while( p ) {
					if( !p.hasSubSel )
						p._setSubSel(true);
					p = p.parent;
				}
			}
			// render this node and the new child
			if ( tree.bEnableUpdate )
				this.render();
			return ftnode;
			*/
		},
		/** Set focus relative to this node and optionally activate.
		 *
		 * 'left' collapses the node if it is expanded, or move to the parent
		 * otherwise.
		 * 'right' expands the node if it is collapsed, or move to the first
		 * child otherwise.
		 *
		 * @param {string|number} where 'down', 'first', 'last', 'left', 'parent', 'right', or 'up'.
		 *   (Alternatively the keyCode that would normally trigger this move,
		 *   e.g. `$.ui.keyCode.LEFT` = 'left'.
		 * @param {boolean} [activate=true]
		 * @returns {$.Promise}
		 */
		navigate: function(where, activate) {
			var node,
				KC = $.ui.keyCode;

			// Handle optional expand/collapse action for LEFT/RIGHT
			switch (where) {
				case "left":
				case KC.LEFT:
					if (this.expanded) {
						return this.setExpanded(false);
					}
					break;
				case "right":
				case KC.RIGHT:
					if (!this.expanded && (this.children || this.lazy)) {
						return this.setExpanded();
					}
					break;
			}
			// Otherwise activate or focus the related node
			node = this.findRelatedNode(where);
			if (node) {
				// setFocus/setActive will scroll later (if autoScroll is specified)
				try {
					node.makeVisible({ scrollIntoView: false });
				} catch (e) {} // #272
				if (activate === false) {
					node.setFocus();
					return _getResolvedPromise();
				}
				return node.setActive();
			}
			this.warn("Could not find related node '" + where + "'.");
			return _getResolvedPromise();
		},
		/**
		 * Remove this node (not allowed for system root).
		 */
		remove: function() {
			return this.parent.removeChild(this);
		},
		/**
		 * Remove childNode from list of direct children.
		 * @param {FancytreeNode} childNode
		 */
		removeChild: function(childNode) {
			return this.tree._callHook("nodeRemoveChild", this, childNode);
		},
		/**
		 * Remove all child nodes and descendents. This converts the node into a leaf.<br>
		 * If this was a lazy node, it is still considered 'loaded'; call node.resetLazy()
		 * in order to trigger lazyLoad on next expand.
		 */
		removeChildren: function() {
			return this.tree._callHook("nodeRemoveChildren", this);
		},
		/**
		 * Remove class from node's span tag and .extraClasses.
		 *
		 * @param {string} className class name
		 *
		 * @since 2.17
		 */
		removeClass: function(className) {
			return this.toggleClass(className, false);
		},
		/**
		 * This method renders and updates all HTML markup that is required
		 * to display this node in its current state.<br>
		 * Note:
		 * <ul>
		 * <li>It should only be neccessary to call this method after the node object
		 *     was modified by direct access to its properties, because the common
		 *     API methods (node.setTitle(), moveTo(), addChildren(), remove(), ...)
		 *     already handle this.
		 * <li> {@link FancytreeNode#renderTitle} and {@link FancytreeNode#renderStatus}
		 *     are implied. If changes are more local, calling only renderTitle() or
		 *     renderStatus() may be sufficient and faster.
		 * </ul>
		 *
		 * @param {boolean} [force=false] re-render, even if html markup was already created
		 * @param {boolean} [deep=false] also render all descendants, even if parent is collapsed
		 */
		render: function(force, deep) {
			return this.tree._callHook("nodeRender", this, force, deep);
		},
		/** Create HTML markup for the node's outer `<span>` (expander, checkbox, icon, and title).
		 * Implies {@link FancytreeNode#renderStatus}.
		 * @see Fancytree_Hooks#nodeRenderTitle
		 */
		renderTitle: function() {
			return this.tree._callHook("nodeRenderTitle", this);
		},
		/** Update element's CSS classes according to node state.
		 * @see Fancytree_Hooks#nodeRenderStatus
		 */
		renderStatus: function() {
			return this.tree._callHook("nodeRenderStatus", this);
		},
		/**
		 * (experimental) Replace this node with `source`.
		 * (Currently only available for paging nodes.)
		 * @param {NodeData[]} source List of child node definitions
		 * @since 2.15
		 */
		replaceWith: function(source) {
			var res,
				parent = this.parent,
				pos = $.inArray(this, parent.children),
				self = this;

			_assert(
				this.isPagingNode(),
				"replaceWith() currently requires a paging status node"
			);

			res = this.tree._callHook("nodeLoadChildren", this, source);
			res.done(function(data) {
				// New nodes are currently children of `this`.
				var children = self.children;
				// Prepend newly loaded child nodes to `this`
				// Move new children after self
				for (i = 0; i < children.length; i++) {
					children[i].parent = parent;
				}
				parent.children.splice.apply(
					parent.children,
					[pos + 1, 0].concat(children)
				);

				// Remove self
				self.children = null;
				self.remove();
				// Redraw new nodes
				parent.render();
				// TODO: set node.partload = false if this was tha last paging node?
				// parent.addPagingNode(false);
			}).fail(function() {
				self.setExpanded();
			});
			return res;
			// $.error("Not implemented: replaceWith()");
		},
		/**
		 * Remove all children, collapse, and set the lazy-flag, so that the lazyLoad
		 * event is triggered on next expand.
		 */
		resetLazy: function() {
			this.removeChildren();
			this.expanded = false;
			this.lazy = true;
			this.children = undefined;
			this.renderStatus();
		},
		/** Schedule activity for delayed execution (cancel any pending request).
		 *  scheduleAction('cancel') will only cancel a pending request (if any).
		 * @param {string} mode
		 * @param {number} ms
		 */
		scheduleAction: function(mode, ms) {
			if (this.tree.timer) {
				clearTimeout(this.tree.timer);
				this.tree.debug("clearTimeout(%o)", this.tree.timer);
			}
			this.tree.timer = null;
			var self = this; // required for closures
			switch (mode) {
				case "cancel":
					// Simply made sure that timer was cleared
					break;
				case "expand":
					this.tree.timer = setTimeout(function() {
						self.tree.debug("setTimeout: trigger expand");
						self.setExpanded(true);
					}, ms);
					break;
				case "activate":
					this.tree.timer = setTimeout(function() {
						self.tree.debug("setTimeout: trigger activate");
						self.setActive(true);
					}, ms);
					break;
				default:
					$.error("Invalid mode " + mode);
			}
			// this.tree.debug("setTimeout(%s, %s): %s", mode, ms, this.tree.timer);
		},
		/**
		 *
		 * @param {boolean | PlainObject} [effects=false] animation options.
		 * @param {object} [options=null] {topNode: null, effects: ..., parent: ...} this node will remain visible in
		 *     any case, even if `this` is outside the scroll pane.
		 * @returns {$.Promise}
		 */
		scrollIntoView: function(effects, options) {
			if (options !== undefined && _isNode(options)) {
				throw Error(
					"scrollIntoView() with 'topNode' option is deprecated since 2014-05-08. Use 'options.topNode' instead."
				);
			}
			// The scroll parent is typically the plain tree's <UL> container.
			// For ext-table, we choose the nearest parent that has `position: relative`
			// and `overflow` set.
			// (This default can be overridden by the local or global `scrollParent` option.)
			var opts = $.extend(
					{
						effects:
							effects === true
								? { duration: 200, queue: false }
								: effects,
						scrollOfs: this.tree.options.scrollOfs,
						scrollParent: this.tree.options.scrollParent,
						topNode: null,
					},
					options
				),
				$scrollParent = opts.scrollParent,
				$container = this.tree.$container,
				overflowY = $container.css("overflow-y");

			if (!$scrollParent) {
				if (this.tree.tbody) {
					$scrollParent = $container.scrollParent();
				} else if (overflowY === "scroll" || overflowY === "auto") {
					$scrollParent = $container;
				} else {
					// #922 plain tree in a non-fixed-sized UL scrolls inside its parent
					$scrollParent = $container.scrollParent();
				}
			} else if (!$scrollParent.jquery) {
				// Make sure we have a jQuery object
				$scrollParent = $($scrollParent);
			}
			if (
				$scrollParent[0] === document ||
				$scrollParent[0] === document.body
			) {
				// `document` may be returned by $().scrollParent(), if nothing is found,
				// but would not work: (see #894)
				this.debug(
					"scrollIntoView(): normalizing scrollParent to 'window':",
					$scrollParent[0]
				);
				$scrollParent = $(window);
			}
			// eslint-disable-next-line one-var
			var topNodeY,
				nodeY,
				horzScrollbarHeight,
				containerOffsetTop,
				dfd = new $.Deferred(),
				self = this,
				nodeHeight = $(this.span).height(),
				topOfs = opts.scrollOfs.top || 0,
				bottomOfs = opts.scrollOfs.bottom || 0,
				containerHeight = $scrollParent.height(),
				scrollTop = $scrollParent.scrollTop(),
				$animateTarget = $scrollParent,
				isParentWindow = $scrollParent[0] === window,
				topNode = opts.topNode || null,
				newScrollTop = null;

			// this.debug("scrollIntoView(), scrollTop=" + scrollTop, opts.scrollOfs);
			// _assert($(this.span).is(":visible"), "scrollIntoView node is invisible"); // otherwise we cannot calc offsets
			if (!this.isVisible()) {
				// We cannot calc offsets for hidden elements
				this.warn("scrollIntoView(): node is invisible.");
				return _getResolvedPromise();
			}
			if (isParentWindow) {
				nodeY = $(this.span).offset().top;
				topNodeY =
					topNode && topNode.span ? $(topNode.span).offset().top : 0;
				$animateTarget = $("html,body");
			} else {
				_assert(
					$scrollParent[0] !== document &&
						$scrollParent[0] !== document.body,
					"scrollParent should be a simple element or `window`, not document or body."
				);

				containerOffsetTop = $scrollParent.offset().top;
				nodeY =
					$(this.span).offset().top - containerOffsetTop + scrollTop; // relative to scroll parent
				topNodeY = topNode
					? $(topNode.span).offset().top -
					  containerOffsetTop +
					  scrollTop
					: 0;
				horzScrollbarHeight = Math.max(
					0,
					$scrollParent.innerHeight() - $scrollParent[0].clientHeight
				);
				containerHeight -= horzScrollbarHeight;
			}

			// this.debug("    scrollIntoView(), nodeY=" + nodeY + ", containerHeight=" + containerHeight);
			if (nodeY < scrollTop + topOfs) {
				// Node is above visible container area
				newScrollTop = nodeY - topOfs;
				// this.debug("    scrollIntoView(), UPPER newScrollTop=" + newScrollTop);
			} else if (
				nodeY + nodeHeight >
				scrollTop + containerHeight - bottomOfs
			) {
				newScrollTop = nodeY + nodeHeight - containerHeight + bottomOfs;
				// this.debug("    scrollIntoView(), LOWER newScrollTop=" + newScrollTop);
				// If a topNode was passed, make sure that it is never scrolled
				// outside the upper border
				if (topNode) {
					_assert(
						topNode.isRootNode() || topNode.isVisible(),
						"topNode must be visible"
					);
					if (topNodeY < newScrollTop) {
						newScrollTop = topNodeY - topOfs;
						// this.debug("    scrollIntoView(), TOP newScrollTop=" + newScrollTop);
					}
				}
			}

			if (newScrollTop === null) {
				dfd.resolveWith(this);
			} else {
				// this.debug("    scrollIntoView(), SET newScrollTop=" + newScrollTop);
				if (opts.effects) {
					opts.effects.complete = function() {
						dfd.resolveWith(self);
					};
					$animateTarget.stop(true).animate(
						{
							scrollTop: newScrollTop,
						},
						opts.effects
					);
				} else {
					$animateTarget[0].scrollTop = newScrollTop;
					dfd.resolveWith(this);
				}
			}
			return dfd.promise();
		},

		/**Activate this node.
		 *
		 * The `cell` option requires the ext-table and ext-ariagrid extensions.
		 *
		 * @param {boolean} [flag=true] pass false to deactivate
		 * @param {object} [opts] additional options. Defaults to {noEvents: false, noFocus: false, cell: null}
		 * @returns {$.Promise}
		 */
		setActive: function(flag, opts) {
			return this.tree._callHook("nodeSetActive", this, flag, opts);
		},
		/**Expand or collapse this node. Promise is resolved, when lazy loading and animations are done.
		 * @param {boolean} [flag=true] pass false to collapse
		 * @param {object} [opts] additional options. Defaults to {noAnimation: false, noEvents: false}
		 * @returns {$.Promise}
		 */
		setExpanded: function(flag, opts) {
			return this.tree._callHook("nodeSetExpanded", this, flag, opts);
		},
		/**Set keyboard focus to this node.
		 * @param {boolean} [flag=true] pass false to blur
		 * @see Fancytree#setFocus
		 */
		setFocus: function(flag) {
			return this.tree._callHook("nodeSetFocus", this, flag);
		},
		/**Select this node, i.e. check the checkbox.
		 * @param {boolean} [flag=true] pass false to deselect
		 * @param {object} [opts] additional options. Defaults to {noEvents: false, p
		 *     propagateDown: null, propagateUp: null, callback: null }
		 */
		setSelected: function(flag, opts) {
			return this.tree._callHook("nodeSetSelected", this, flag, opts);
		},
		/**Mark a lazy node as 'error', 'loading', 'nodata', or 'ok'.
		 * @param {string} status 'error'|'empty'|'ok'
		 * @param {string} [message]
		 * @param {string} [details]
		 */
		setStatus: function(status, message, details) {
			return this.tree._callHook(
				"nodeSetStatus",
				this,
				status,
				message,
				details
			);
		},
		/**Rename this node.
		 * @param {string} title
		 */
		setTitle: function(title) {
			this.title = title;
			this.renderTitle();
			this.triggerModify("rename");
		},
		/**Sort child list by title.
		 * @param {function} [cmp] custom compare function(a, b) that returns -1, 0, or 1 (defaults to sort by title).
		 * @param {boolean} [deep=false] pass true to sort all descendant nodes
		 */
		sortChildren: function(cmp, deep) {
			var i,
				l,
				cl = this.children;

			if (!cl) {
				return;
			}
			cmp =
				cmp ||
				function(a, b) {
					var x = a.title.toLowerCase(),
						y = b.title.toLowerCase();

					// eslint-disable-next-line no-nested-ternary
					return x === y ? 0 : x > y ? 1 : -1;
				};
			cl.sort(cmp);
			if (deep) {
				for (i = 0, l = cl.length; i < l; i++) {
					if (cl[i].children) {
						cl[i].sortChildren(cmp, "$norender$");
					}
				}
			}
			if (deep !== "$norender$") {
				this.render();
			}
			this.triggerModifyChild("sort");
		},
		/** Convert node (or whole branch) into a plain object.
		 *
		 * The result is compatible with node.addChildren().
		 *
		 * @param {boolean} [recursive=false] include child nodes
		 * @param {function} [callback] callback(dict, node) is called for every node, in order to allow modifications.
		 *     Return `false` to ignore this node or "skip" to include this node without its children.
		 * @returns {NodeData}
		 */
		toDict: function(recursive, callback) {
			var i,
				l,
				node,
				res,
				dict = {},
				self = this;

			$.each(NODE_ATTRS, function(i, a) {
				if (self[a] || self[a] === false) {
					dict[a] = self[a];
				}
			});
			if (!$.isEmptyObject(this.data)) {
				dict.data = $.extend({}, this.data);
				if ($.isEmptyObject(dict.data)) {
					delete dict.data;
				}
			}
			if (callback) {
				res = callback(dict, self);
				if (res === false) {
					return false; // Don't include this node nor its children
				}
				if (res === "skip") {
					recursive = false; // Include this node, but not the children
				}
			}
			if (recursive) {
				if (this.hasChildren()) {
					dict.children = [];
					for (i = 0, l = this.children.length; i < l; i++) {
						node = this.children[i];
						if (!node.isStatusNode()) {
							res = node.toDict(true, callback);
							if (res !== false) {
								dict.children.push(res);
							}
						}
					}
				}
			}
			return dict;
		},
		/**
		 * Set, clear, or toggle class of node's span tag and .extraClasses.
		 *
		 * @param {string} className class name (separate multiple classes by space)
		 * @param {boolean} [flag] true/false to add/remove class. If omitted, class is toggled.
		 * @returns {boolean} true if a class was added
		 *
		 * @since 2.17
		 */
		toggleClass: function(value, flag) {
			var className,
				hasClass,
				rnotwhite = /\S+/g,
				classNames = value.match(rnotwhite) || [],
				i = 0,
				wasAdded = false,
				statusElem = this[this.tree.statusClassPropName],
				curClasses = " " + (this.extraClasses || "") + " ";

			// this.info("toggleClass('" + value + "', " + flag + ")", curClasses);
			// Modify DOM element directly if it already exists
			if (statusElem) {
				$(statusElem).toggleClass(value, flag);
			}
			// Modify node.extraClasses to make this change persistent
			// Toggle if flag was not passed
			while ((className = classNames[i++])) {
				hasClass = curClasses.indexOf(" " + className + " ") >= 0;
				flag = flag === undefined ? !hasClass : !!flag;
				if (flag) {
					if (!hasClass) {
						curClasses += className + " ";
						wasAdded = true;
					}
				} else {
					while (curClasses.indexOf(" " + className + " ") > -1) {
						curClasses = curClasses.replace(
							" " + className + " ",
							" "
						);
					}
				}
			}
			this.extraClasses = $.trim(curClasses);
			// this.info("-> toggleClass('" + value + "', " + flag + "): '" + this.extraClasses + "'");
			return wasAdded;
		},
		/** Flip expanded status. */
		toggleExpanded: function() {
			return this.tree._callHook("nodeToggleExpanded", this);
		},
		/** Flip selection status. */
		toggleSelected: function() {
			return this.tree._callHook("nodeToggleSelected", this);
		},
		toString: function() {
			return "FancytreeNode@" + this.key + "[title='" + this.title + "']";
			// return "<FancytreeNode(#" + this.key + ", '" + this.title + "')>";
		},
		/**
		 * Trigger `modifyChild` event on a parent to signal that a child was modified.
		 * @param {string} operation Type of change: 'add', 'remove', 'rename', 'move', 'data', ...
		 * @param {FancytreeNode} [childNode]
		 * @param {object} [extra]
		 */
		triggerModifyChild: function(operation, childNode, extra) {
			var data,
				modifyChild = this.tree.options.modifyChild;

			if (modifyChild) {
				if (childNode && childNode.parent !== this) {
					$.error(
						"childNode " + childNode + " is not a child of " + this
					);
				}
				data = {
					node: this,
					tree: this.tree,
					operation: operation,
					childNode: childNode || null,
				};
				if (extra) {
					$.extend(data, extra);
				}
				modifyChild({ type: "modifyChild" }, data);
			}
		},
		/**
		 * Trigger `modifyChild` event on node.parent(!).
		 * @param {string} operation Type of change: 'add', 'remove', 'rename', 'move', 'data', ...
		 * @param {object} [extra]
		 */
		triggerModify: function(operation, extra) {
			this.parent.triggerModifyChild(operation, this, extra);
		},
		/** Call fn(node) for all child nodes in hierarchical order (depth-first).<br>
		 * Stop iteration, if fn() returns false. Skip current branch, if fn() returns "skip".<br>
		 * Return false if iteration was stopped.
		 *
		 * @param {function} fn the callback function.
		 *     Return false to stop iteration, return "skip" to skip this node and
		 *     its children only.
		 * @param {boolean} [includeSelf=false]
		 * @returns {boolean}
		 */
		visit: function(fn, includeSelf) {
			var i,
				l,
				res = true,
				children = this.children;

			if (includeSelf === true) {
				res = fn(this);
				if (res === false || res === "skip") {
					return res;
				}
			}
			if (children) {
				for (i = 0, l = children.length; i < l; i++) {
					res = children[i].visit(fn, true);
					if (res === false) {
						break;
					}
				}
			}
			return res;
		},
		/** Call fn(node) for all child nodes and recursively load lazy children.<br>
		 * <b>Note:</b> If you need this method, you probably should consider to review
		 * your architecture! Recursivley loading nodes is a perfect way for lazy
		 * programmers to flood the server with requests ;-)
		 *
		 * @param {function} [fn] optional callback function.
		 *     Return false to stop iteration, return "skip" to skip this node and
		 *     its children only.
		 * @param {boolean} [includeSelf=false]
		 * @returns {$.Promise}
		 * @since 2.4
		 */
		visitAndLoad: function(fn, includeSelf, _recursion) {
			var dfd,
				res,
				loaders,
				node = this;

			// node.debug("visitAndLoad");
			if (fn && includeSelf === true) {
				res = fn(node);
				if (res === false || res === "skip") {
					return _recursion ? res : _getResolvedPromise();
				}
			}
			if (!node.children && !node.lazy) {
				return _getResolvedPromise();
			}
			dfd = new $.Deferred();
			loaders = [];
			// node.debug("load()...");
			node.load().done(function() {
				// node.debug("load()... done.");
				for (var i = 0, l = node.children.length; i < l; i++) {
					res = node.children[i].visitAndLoad(fn, true, true);
					if (res === false) {
						dfd.reject();
						break;
					} else if (res !== "skip") {
						loaders.push(res); // Add promise to the list
					}
				}
				$.when.apply(this, loaders).then(function() {
					dfd.resolve();
				});
			});
			return dfd.promise();
		},
		/** Call fn(node) for all parent nodes, bottom-up, including invisible system root.<br>
		 * Stop iteration, if fn() returns false.<br>
		 * Return false if iteration was stopped.
		 *
		 * @param {function} fn the callback function.
		 *     Return false to stop iteration, return "skip" to skip this node and children only.
		 * @param {boolean} [includeSelf=false]
		 * @returns {boolean}
		 */
		visitParents: function(fn, includeSelf) {
			// Visit parent nodes (bottom up)
			if (includeSelf && fn(this) === false) {
				return false;
			}
			var p = this.parent;
			while (p) {
				if (fn(p) === false) {
					return false;
				}
				p = p.parent;
			}
			return true;
		},
		/** Call fn(node) for all sibling nodes.<br>
		 * Stop iteration, if fn() returns false.<br>
		 * Return false if iteration was stopped.
		 *
		 * @param {function} fn the callback function.
		 *     Return false to stop iteration.
		 * @param {boolean} [includeSelf=false]
		 * @returns {boolean}
		 */
		visitSiblings: function(fn, includeSelf) {
			var i,
				l,
				n,
				ac = this.parent.children;

			for (i = 0, l = ac.length; i < l; i++) {
				n = ac[i];
				if (includeSelf || n !== this) {
					if (fn(n) === false) {
						return false;
					}
				}
			}
			return true;
		},
		/** Write warning to browser console if debugLevel >= 2 (prepending node info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		warn: function(msg) {
			if (this.tree.options.debugLevel >= 2) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("warn", arguments);
			}
		},
	};

	/******************************************************************************
	 * Fancytree
	 */
	/**
	 * Construct a new tree object.
	 *
	 * @class Fancytree
	 * @classdesc The controller behind a fancytree.
	 * This class also contains 'hook methods': see {@link Fancytree_Hooks}.
	 *
	 * @param {Widget} widget
	 *
	 * @property {string} _id Automatically generated unique tree instance ID, e.g. "1".
	 * @property {string} _ns Automatically generated unique tree namespace, e.g. ".fancytree-1".
	 * @property {FancytreeNode} activeNode Currently active node or null.
	 * @property {string} ariaPropName Property name of FancytreeNode that contains the element which will receive the aria attributes.
	 *     Typically "li", but "tr" for table extension.
	 * @property {jQueryObject} $container Outer `<ul>` element (or `<table>` element for ext-table).
	 * @property {jQueryObject} $div A jQuery object containing the element used to instantiate the tree widget (`widget.element`)
	 * @property {object|array} columns Recommended place to store shared column meta data. @since 2.27
	 * @property {object} data Metadata, i.e. properties that may be passed to `source` in addition to a children array.
	 * @property {object} ext Hash of all active plugin instances.
	 * @property {FancytreeNode} focusNode Currently focused node or null.
	 * @property {FancytreeNode} lastSelectedNode Used to implement selectMode 1 (single select)
	 * @property {string} nodeContainerAttrName Property name of FancytreeNode that contains the outer element of single nodes.
	 *     Typically "li", but "tr" for table extension.
	 * @property {FancytreeOptions} options Current options, i.e. default options + options passed to constructor.
	 * @property {FancytreeNode} rootNode Invisible system root node.
	 * @property {string} statusClassPropName Property name of FancytreeNode that contains the element which will receive the status classes.
	 *     Typically "span", but "tr" for table extension.
	 * @property {object} types Map for shared type specific meta data, used with node.type attribute. @since 2.27
	 * @property {object} viewport See ext-vieport. @since v2.31
	 * @property {object} widget Base widget instance.
	 */
	function Fancytree(widget) {
		this.widget = widget;
		this.$div = widget.element;
		this.options = widget.options;
		if (this.options) {
			if (this.options.lazyload !== undefined) {
				$.error(
					"The 'lazyload' event is deprecated since 2014-02-25. Use 'lazyLoad' (with uppercase L) instead."
				);
			}
			if (this.options.loaderror !== undefined) {
				$.error(
					"The 'loaderror' event was renamed since 2014-07-03. Use 'loadError' (with uppercase E) instead."
				);
			}
			if (this.options.fx !== undefined) {
				$.error(
					"The 'fx' option was replaced by 'toggleEffect' since 2014-11-30."
				);
			}
			if (this.options.removeNode !== undefined) {
				$.error(
					"The 'removeNode' event was replaced by 'modifyChild' since 2.20 (2016-09-10)."
				);
			}
		}
		this.ext = {}; // Active extension instances
		this.types = {};
		this.columns = {};
		// allow to init tree.data.foo from <div data-foo=''>
		this.data = _getElementDataAsDict(this.$div);
		// TODO: use widget.uuid instead?
		this._id = "" + (this.options.treeId || $.ui.fancytree._nextId++);
		// TODO: use widget.eventNamespace instead?
		this._ns = ".fancytree-" + this._id; // append for namespaced events
		this.activeNode = null;
		this.focusNode = null;
		this._hasFocus = null;
		this._tempCache = {};
		this._lastMousedownNode = null;
		this._enableUpdate = true;
		this.lastSelectedNode = null;
		this.systemFocusElement = null;
		this.lastQuicksearchTerm = "";
		this.lastQuicksearchTime = 0;
		this.viewport = null; // ext-grid

		this.statusClassPropName = "span";
		this.ariaPropName = "li";
		this.nodeContainerAttrName = "li";

		// Remove previous markup if any
		this.$div.find(">ul.fancytree-container").remove();

		// Create a node without parent.
		var fakeParent = { tree: this },
			$ul;
		this.rootNode = new FancytreeNode(fakeParent, {
			title: "root",
			key: "root_" + this._id,
			children: null,
			expanded: true,
		});
		this.rootNode.parent = null;

		// Create root markup
		$ul = $("<ul>", {
			id: "ft-id-" + this._id,
			class: "ui-fancytree fancytree-container fancytree-plain",
		}).appendTo(this.$div);
		this.$container = $ul;
		this.rootNode.ul = $ul[0];

		if (this.options.debugLevel == null) {
			this.options.debugLevel = FT.debugLevel;
		}
		// // Add container to the TAB chain
		// // See http://www.w3.org/TR/wai-aria-practices/#focus_activedescendant
		// // #577: Allow to set tabindex to "0", "-1" and ""
		// this.$container.attr("tabindex", this.options.tabindex);

		// if( this.options.rtl ) {
		// 	this.$container.attr("DIR", "RTL").addClass("fancytree-rtl");
		// // }else{
		// //	this.$container.attr("DIR", null).removeClass("fancytree-rtl");
		// }
		// if(this.options.aria){
		// 	this.$container.attr("role", "tree");
		// 	if( this.options.selectMode !== 1 ) {
		// 		this.$container.attr("aria-multiselectable", true);
		// 	}
		// }
	}

	Fancytree.prototype = /** @lends Fancytree# */ {
		/* Return a context object that can be re-used for _callHook().
		 * @param {Fancytree | FancytreeNode | EventData} obj
		 * @param {Event} originalEvent
		 * @param {Object} extra
		 * @returns {EventData}
		 */
		_makeHookContext: function(obj, originalEvent, extra) {
			var ctx, tree;
			if (obj.node !== undefined) {
				// obj is already a context object
				if (originalEvent && obj.originalEvent !== originalEvent) {
					$.error("invalid args");
				}
				ctx = obj;
			} else if (obj.tree) {
				// obj is a FancytreeNode
				tree = obj.tree;
				ctx = {
					node: obj,
					tree: tree,
					widget: tree.widget,
					options: tree.widget.options,
					originalEvent: originalEvent,
					typeInfo: tree.types[obj.type] || {},
				};
			} else if (obj.widget) {
				// obj is a Fancytree
				ctx = {
					node: null,
					tree: obj,
					widget: obj.widget,
					options: obj.widget.options,
					originalEvent: originalEvent,
				};
			} else {
				$.error("invalid args");
			}
			if (extra) {
				$.extend(ctx, extra);
			}
			return ctx;
		},
		/* Trigger a hook function: funcName(ctx, [...]).
		 *
		 * @param {string} funcName
		 * @param {Fancytree|FancytreeNode|EventData} contextObject
		 * @param {any}  [_extraArgs] optional additional arguments
		 * @returns {any}
		 */
		_callHook: function(funcName, contextObject, _extraArgs) {
			var ctx = this._makeHookContext(contextObject),
				fn = this[funcName],
				args = Array.prototype.slice.call(arguments, 2);
			if (!$.isFunction(fn)) {
				$.error("_callHook('" + funcName + "') is not a function");
			}
			args.unshift(ctx);
			// this.debug("_hook", funcName, ctx.node && ctx.node.toString() || ctx.tree.toString(), args);
			return fn.apply(this, args);
		},
		_setExpiringValue: function(key, value, ms) {
			this._tempCache[key] = {
				value: value,
				expire: Date.now() + (+ms || 50),
			};
		},
		_getExpiringValue: function(key) {
			var entry = this._tempCache[key];
			if (entry && entry.expire > Date.now()) {
				return entry.value;
			}
			delete this._tempCache[key];
			return null;
		},
		/* Check if this tree has extension `name` enabled.
		 *
		 * @param {string} name name of the required extension
		 */
		_usesExtension: function(name) {
			return $.inArray(name, this.options.extensions) >= 0;
		},
		/* Check if current extensions dependencies are met and throw an error if not.
		 *
		 * This method may be called inside the `treeInit` hook for custom extensions.
		 *
		 * @param {string} name name of the required extension
		 * @param {boolean} [required=true] pass `false` if the extension is optional, but we want to check for order if it is present
		 * @param {boolean} [before] `true` if `name` must be included before this, `false` otherwise (use `null` if order doesn't matter)
		 * @param {string} [message] optional error message (defaults to a descriptve error message)
		 */
		_requireExtension: function(name, required, before, message) {
			if (before != null) {
				before = !!before;
			}
			var thisName = this._local.name,
				extList = this.options.extensions,
				isBefore =
					$.inArray(name, extList) < $.inArray(thisName, extList),
				isMissing = required && this.ext[name] == null,
				badOrder = !isMissing && before != null && before !== isBefore;

			_assert(
				thisName && thisName !== name,
				"invalid or same name '" + thisName + "' (require yourself?)"
			);

			if (isMissing || badOrder) {
				if (!message) {
					if (isMissing || required) {
						message =
							"'" +
							thisName +
							"' extension requires '" +
							name +
							"'";
						if (badOrder) {
							message +=
								" to be registered " +
								(before ? "before" : "after") +
								" itself";
						}
					} else {
						message =
							"If used together, `" +
							name +
							"` must be registered " +
							(before ? "before" : "after") +
							" `" +
							thisName +
							"`";
					}
				}
				$.error(message);
				return false;
			}
			return true;
		},
		/** Activate node with a given key and fire focus and activate events.
		 *
		 * A previously activated node will be deactivated.
		 * If activeVisible option is set, all parents will be expanded as necessary.
		 * Pass key = false, to deactivate the current node only.
		 * @param {string} key
		 * @param {object} [opts] additional options. Defaults to {noEvents: false, noFocus: false}
		 * @returns {FancytreeNode} activated node (null, if not found)
		 */
		activateKey: function(key, opts) {
			var node = this.getNodeByKey(key);
			if (node) {
				node.setActive(true, opts);
			} else if (this.activeNode) {
				this.activeNode.setActive(false, opts);
			}
			return node;
		},
		/** (experimental) Add child status nodes that indicate 'More...', ....
		 * @param {boolean|object} node optional node definition. Pass `false` to remove all paging nodes.
		 * @param {string} [mode='append'] 'child'|firstChild'
		 * @since 2.15
		 */
		addPagingNode: function(node, mode) {
			return this.rootNode.addPagingNode(node, mode);
		},
		/**
		 * (experimental) Apply a modification (or navigation) operation.
		 *
		 * Valid commands:
		 *   - 'moveUp', 'moveDown'
		 *   - 'indent', 'outdent'
		 *   - 'remove'
		 *   - 'edit', 'addChild', 'addSibling': (reqires ext-edit extension)
		 *   - 'cut', 'copy', 'paste': (use an internal singleton 'clipboard')
		 *   - 'down', 'first', 'last', 'left', 'parent', 'right', 'up': navigate
		 *
		 * @param {string} cmd
		 * @param {FancytreeNode} [node=active_node]
		 * @param {object} [opts] Currently unused
		 *
		 * @since 2.32
		 */
		applyCommand: function(cmd, node, opts_) {
			var // clipboard,
				refNode;
			// opts = $.extend(
			// 	{ setActive: true, clipboard: CLIPBOARD },
			// 	opts_
			// );

			node = node || this.getActiveNode();
			// clipboard = opts.clipboard;

			switch (cmd) {
				// Sorting and indentation:
				case "moveUp":
					refNode = node.getPrevSibling();
					if (refNode) {
						node.moveTo(refNode, "before");
						node.setActive();
					}
					break;
				case "moveDown":
					refNode = node.getNextSibling();
					if (refNode) {
						node.moveTo(refNode, "after");
						node.setActive();
					}
					break;
				case "indent":
					refNode = node.getPrevSibling();
					if (refNode) {
						node.moveTo(refNode, "child");
						refNode.setExpanded();
						node.setActive();
					}
					break;
				case "outdent":
					if (!node.isTopLevel()) {
						node.moveTo(node.getParent(), "after");
						node.setActive();
					}
					break;
				// Remove:
				case "remove":
					refNode = node.getPrevSibling() || node.getParent();
					node.remove();
					if (refNode) {
						refNode.setActive();
					}
					break;
				// Add, edit (requires ext-edit):
				case "addChild":
					node.editCreateNode("child", "");
					break;
				case "addSibling":
					node.editCreateNode("after", "");
					break;
				case "rename":
					node.editStart();
					break;
				// Simple clipboard simulation:
				// case "cut":
				// 	clipboard = { mode: cmd, data: node };
				// 	break;
				// case "copy":
				// 	clipboard = {
				// 		mode: cmd,
				// 		data: node.toDict(function(n) {
				// 			delete n.key;
				// 		}),
				// 	};
				// 	break;
				// case "clear":
				// 	clipboard = null;
				// 	break;
				// case "paste":
				// 	if (clipboard.mode === "cut") {
				// 		// refNode = node.getPrevSibling();
				// 		clipboard.data.moveTo(node, "child");
				// 		clipboard.data.setActive();
				// 	} else if (clipboard.mode === "copy") {
				// 		node.addChildren(clipboard.data).setActive();
				// 	}
				// 	break;
				// Navigation commands:
				case "down":
				case "first":
				case "last":
				case "left":
				case "parent":
				case "right":
				case "up":
					return node.navigate(cmd);
				default:
					$.error("Unhandled command: '" + cmd + "'");
			}
		},
		/** (experimental) Modify existing data model.
		 *
		 * @param {Array} patchList array of [key, NodePatch] arrays
		 * @returns {$.Promise} resolved, when all patches have been applied
		 * @see TreePatch
		 */
		applyPatch: function(patchList) {
			var dfd,
				i,
				p2,
				key,
				patch,
				node,
				patchCount = patchList.length,
				deferredList = [];

			for (i = 0; i < patchCount; i++) {
				p2 = patchList[i];
				_assert(
					p2.length === 2,
					"patchList must be an array of length-2-arrays"
				);
				key = p2[0];
				patch = p2[1];
				node = key === null ? this.rootNode : this.getNodeByKey(key);
				if (node) {
					dfd = new $.Deferred();
					deferredList.push(dfd);
					node.applyPatch(patch).always(_makeResolveFunc(dfd, node));
				} else {
					this.warn("could not find node with key '" + key + "'");
				}
			}
			// Return a promise that is resolved, when ALL patches were applied
			return $.when.apply($, deferredList).promise();
		},
		/* TODO: implement in dnd extension
		cancelDrag: function() {
				var dd = $.ui.ddmanager.current;
				if(dd){
					dd.cancel();
				}
			},
		*/
		/** Remove all nodes.
		 * @since 2.14
		 */
		clear: function(source) {
			this._callHook("treeClear", this);
		},
		/** Return the number of nodes.
		 * @returns {integer}
		 */
		count: function() {
			return this.rootNode.countChildren();
		},
		/** Write to browser console if debugLevel >= 4 (prepending tree name)
		 *
		 * @param {*} msg string or object or array of such
		 */
		debug: function(msg) {
			if (this.options.debugLevel >= 4) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("log", arguments);
			}
		},
		/** Destroy this widget, restore previous markup and cleanup resources.
		 *
		 * @since 2.34
		 */
		destroy: function() {
			this.widget.destroy();
		},
		/** Enable (or disable) the tree control.
		 *
		 * @param {boolean} [flag=true] pass false to disable
		 * @since 2.30
		 */
		enable: function(flag) {
			if (flag === false) {
				this.widget.disable();
			} else {
				this.widget.enable();
			}
		},
		/** Temporarily suppress rendering to improve performance on bulk-updates.
		 *
		 * @param {boolean} flag
		 * @returns {boolean} previous status
		 * @since 2.19
		 */
		enableUpdate: function(flag) {
			flag = flag !== false;
			if (!!this._enableUpdate === !!flag) {
				return flag;
			}
			this._enableUpdate = flag;
			if (flag) {
				this.debug("enableUpdate(true): redraw "); //, this._dirtyRoots);
				this._callHook("treeStructureChanged", this, "enableUpdate");
				this.render();
			} else {
				// 	this._dirtyRoots = null;
				this.debug("enableUpdate(false)...");
			}
			return !flag; // return previous value
		},
		/** Write error to browser console if debugLevel >= 1 (prepending tree info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		error: function(msg) {
			if (this.options.debugLevel >= 1) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("error", arguments);
			}
		},
		/** Expand (or collapse) all parent nodes.
		 *
		 * This convenience method uses `tree.visit()` and `tree.setExpanded()`
		 * internally.
		 *
		 * @param {boolean} [flag=true] pass false to collapse
		 * @param {object} [opts] passed to setExpanded()
		 * @since 2.30
		 */
		expandAll: function(flag, opts) {
			var prev = this.enableUpdate(false);

			flag = flag !== false;
			this.visit(function(node) {
				if (
					node.hasChildren() !== false &&
					node.isExpanded() !== flag
				) {
					node.setExpanded(flag, opts);
				}
			});
			this.enableUpdate(prev);
		},
		/**Find all nodes that matches condition.
		 *
		 * @param {string | function(node)} match title string to search for, or a
		 *     callback function that returns `true` if a node is matched.
		 * @returns {FancytreeNode[]} array of nodes (may be empty)
		 * @see FancytreeNode#findAll
		 * @since 2.12
		 */
		findAll: function(match) {
			return this.rootNode.findAll(match);
		},
		/**Find first node that matches condition.
		 *
		 * @param {string | function(node)} match title string to search for, or a
		 *     callback function that returns `true` if a node is matched.
		 * @returns {FancytreeNode} matching node or null
		 * @see FancytreeNode#findFirst
		 * @since 2.12
		 */
		findFirst: function(match) {
			return this.rootNode.findFirst(match);
		},
		/** Find the next visible node that starts with `match`, starting at `startNode`
		 * and wrap-around at the end.
		 *
		 * @param {string|function} match
		 * @param {FancytreeNode} [startNode] defaults to first node
		 * @returns {FancytreeNode} matching node or null
		 */
		findNextNode: function(match, startNode) {
			//, visibleOnly) {
			var res = null,
				firstNode = this.getFirstChild();

			match =
				typeof match === "string"
					? _makeNodeTitleStartMatcher(match)
					: match;
			startNode = startNode || firstNode;

			function _checkNode(n) {
				// console.log("_check " + n)
				if (match(n)) {
					res = n;
				}
				if (res || n === startNode) {
					return false;
				}
			}
			this.visitRows(_checkNode, {
				start: startNode,
				includeSelf: false,
			});
			// Wrap around search
			if (!res && startNode !== firstNode) {
				this.visitRows(_checkNode, {
					start: firstNode,
					includeSelf: true,
				});
			}
			return res;
		},
		/** Find a node relative to another node.
		 *
		 * @param {FancytreeNode} node
		 * @param {string|number} where 'down', 'first', 'last', 'left', 'parent', 'right', or 'up'.
		 *   (Alternatively the keyCode that would normally trigger this move,
		 *   e.g. `$.ui.keyCode.LEFT` = 'left'.
		 * @param {boolean} [includeHidden=false] Not yet implemented
		 * @returns {FancytreeNode|null}
		 * @since v2.31
		 */
		findRelatedNode: function(node, where, includeHidden) {
			var res = null,
				KC = $.ui.keyCode;

			switch (where) {
				case "parent":
				case KC.BACKSPACE:
					if (node.parent && node.parent.parent) {
						res = node.parent;
					}
					break;
				case "first":
				case KC.HOME:
					// First visible node
					this.visit(function(n) {
						if (n.isVisible()) {
							res = n;
							return false;
						}
					});
					break;
				case "last":
				case KC.END:
					this.visit(function(n) {
						// last visible node
						if (n.isVisible()) {
							res = n;
						}
					});
					break;
				case "left":
				case KC.LEFT:
					if (node.expanded) {
						node.setExpanded(false);
					} else if (node.parent && node.parent.parent) {
						res = node.parent;
					}
					break;
				case "right":
				case KC.RIGHT:
					if (!node.expanded && (node.children || node.lazy)) {
						node.setExpanded();
						res = node;
					} else if (node.children && node.children.length) {
						res = node.children[0];
					}
					break;
				case "up":
				case KC.UP:
					this.visitRows(
						function(n) {
							res = n;
							return false;
						},
						{ start: node, reverse: true, includeSelf: false }
					);
					break;
				case "down":
				case KC.DOWN:
					this.visitRows(
						function(n) {
							res = n;
							return false;
						},
						{ start: node, includeSelf: false }
					);
					break;
				default:
					this.tree.warn("Unknown relation '" + where + "'.");
			}
			return res;
		},
		// TODO: fromDict
		/**
		 * Generate INPUT elements that can be submitted with html forms.
		 *
		 * In selectMode 3 only the topmost selected nodes are considered, unless
		 * `opts.stopOnParents: false` is passed.
		 *
		 * @example
		 * // Generate input elements for active and selected nodes
		 * tree.generateFormElements();
		 * // Generate input elements selected nodes, using a custom `name` attribute
		 * tree.generateFormElements("cust_sel", false);
		 * // Generate input elements using a custom filter
		 * tree.generateFormElements(true, true, { filter: function(node) {
		 *     return node.isSelected() && node.data.yes;
		 * }});
		 *
		 * @param {boolean | string} [selected=true] Pass false to disable, pass a string to override the field name (default: 'ft_ID[]')
		 * @param {boolean | string} [active=true] Pass false to disable, pass a string to override the field name (default: 'ft_ID_active')
		 * @param {object} [opts] default { filter: null, stopOnParents: true }
		 */
		generateFormElements: function(selected, active, opts) {
			opts = opts || {};

			var nodeList,
				selectedName =
					typeof selected === "string"
						? selected
						: "ft_" + this._id + "[]",
				activeName =
					typeof active === "string"
						? active
						: "ft_" + this._id + "_active",
				id = "fancytree_result_" + this._id,
				$result = $("#" + id),
				stopOnParents =
					this.options.selectMode === 3 &&
					opts.stopOnParents !== false;

			if ($result.length) {
				$result.empty();
			} else {
				$result = $("<div>", {
					id: id,
				})
					.hide()
					.insertAfter(this.$container);
			}
			if (active !== false && this.activeNode) {
				$result.append(
					$("<input>", {
						type: "radio",
						name: activeName,
						value: this.activeNode.key,
						checked: true,
					})
				);
			}
			function _appender(node) {
				$result.append(
					$("<input>", {
						type: "checkbox",
						name: selectedName,
						value: node.key,
						checked: true,
					})
				);
			}
			if (opts.filter) {
				this.visit(function(node) {
					var res = opts.filter(node);
					if (res === "skip") {
						return res;
					}
					if (res !== false) {
						_appender(node);
					}
				});
			} else if (selected !== false) {
				nodeList = this.getSelectedNodes(stopOnParents);
				$.each(nodeList, function(idx, node) {
					_appender(node);
				});
			}
		},
		/**
		 * Return the currently active node or null.
		 * @returns {FancytreeNode}
		 */
		getActiveNode: function() {
			return this.activeNode;
		},
		/** Return the first top level node if any (not the invisible root node).
		 * @returns {FancytreeNode | null}
		 */
		getFirstChild: function() {
			return this.rootNode.getFirstChild();
		},
		/**
		 * Return node that has keyboard focus or null.
		 * @returns {FancytreeNode}
		 */
		getFocusNode: function() {
			return this.focusNode;
		},
		/**
		 * Return current option value.
		 * (Note: this is the preferred variant of `$().fancytree("option", "KEY")`)
		 *
		 * @param {string} name option name (may contain '.')
		 * @returns {any}
		 */
		getOption: function(optionName) {
			return this.widget.option(optionName);
		},
		/**
		 * Return node with a given key or null if not found.
		 *
		 * @param {string} key
		 * @param {FancytreeNode} [searchRoot] only search below this node
		 * @returns {FancytreeNode | null}
		 */
		getNodeByKey: function(key, searchRoot) {
			// Search the DOM by element ID (assuming this is faster than traversing all nodes).
			var el, match;
			// TODO: use tree.keyMap if available
			// TODO: check opts.generateIds === true
			if (!searchRoot) {
				el = document.getElementById(this.options.idPrefix + key);
				if (el) {
					return el.ftnode ? el.ftnode : null;
				}
			}
			// Not found in the DOM, but still may be in an unrendered part of tree
			searchRoot = searchRoot || this.rootNode;
			match = null;
			searchRoot.visit(function(node) {
				if (node.key === key) {
					match = node;
					return false; // Stop iteration
				}
			}, true);
			return match;
		},
		/** Return the invisible system root node.
		 * @returns {FancytreeNode}
		 */
		getRootNode: function() {
			return this.rootNode;
		},
		/**
		 * Return an array of selected nodes.
		 *
		 * Note: you cannot send this result via Ajax directly. Instead the
		 * node object need to be converted to plain objects, for example
		 * by using `$.map()` and `node.toDict()`.
		 * @param {boolean} [stopOnParents=false] only return the topmost selected
		 *     node (useful with selectMode 3)
		 * @returns {FancytreeNode[]}
		 */
		getSelectedNodes: function(stopOnParents) {
			return this.rootNode.getSelectedNodes(stopOnParents);
		},
		/** Return true if the tree control has keyboard focus
		 * @returns {boolean}
		 */
		hasFocus: function() {
			// var ae = document.activeElement,
			// 	hasFocus = !!(
			// 		ae && $(ae).closest(".fancytree-container").length
			// 	);

			// if (hasFocus !== !!this._hasFocus) {
			// 	this.warn(
			// 		"hasFocus(): fix inconsistent container state, now: " +
			// 			hasFocus
			// 	);
			// 	this._hasFocus = hasFocus;
			// 	this.$container.toggleClass("fancytree-treefocus", hasFocus);
			// }
			// return hasFocus;
			return !!this._hasFocus;
		},
		/** Write to browser console if debugLevel >= 3 (prepending tree name)
		 * @param {*} msg string or object or array of such
		 */
		info: function(msg) {
			if (this.options.debugLevel >= 3) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("info", arguments);
			}
		},
		/** Return true if any node is currently beeing loaded, i.e. a Ajax request is pending.
		 * @returns {boolean}
		 * @since 2.32
		 */
		isLoading: function() {
			var res = false;

			this.rootNode.visit(function(n) {
				// also visit rootNode
				if (n._isLoading || n._requestId) {
					res = true;
					return false;
				}
			}, true);
			return res;
		},
		/*
		TODO: isInitializing: function() {
			return ( this.phase=="init" || this.phase=="postInit" );
		},
		TODO: isReloading: function() {
			return ( this.phase=="init" || this.phase=="postInit" ) && this.options.persist && this.persistence.cookiesFound;
		},
		TODO: isUserEvent: function() {
			return ( this.phase=="userEvent" );
		},
		*/

		/**
		 * Make sure that a node with a given ID is loaded, by traversing - and
		 * loading - its parents. This method is meant for lazy hierarchies.
		 * A callback is executed for every node as we go.
		 * @example
		 * // Resolve using node.key:
		 * tree.loadKeyPath("/_3/_23/_26/_27", function(node, status){
		 *   if(status === "loaded") {
		 *     console.log("loaded intermediate node " + node);
		 *   }else if(status === "ok") {
		 *     node.activate();
		 *   }
		 * });
		 * // Use deferred promise:
		 * tree.loadKeyPath("/_3/_23/_26/_27").progress(function(data){
		 *   if(data.status === "loaded") {
		 *     console.log("loaded intermediate node " + data.node);
		 *   }else if(data.status === "ok") {
		 *     node.activate();
		 *   }
		 * }).done(function(){
		 *    ...
		 * });
		 * // Custom path segment resolver:
		 * tree.loadKeyPath("/321/431/21/2", {
		 *   matchKey: function(node, key){
		 *     return node.data.refKey === key;
		 *   },
		 *   callback: function(node, status){
		 *     if(status === "loaded") {
		 *       console.log("loaded intermediate node " + node);
		 *     }else if(status === "ok") {
		 *       node.activate();
		 *     }
		 *   }
		 * });
		 * @param {string | string[]} keyPathList one or more key paths (e.g. '/3/2_1/7')
		 * @param {function | object} optsOrCallback callback(node, status) is called for every visited node ('loading', 'loaded', 'ok', 'error').
		 *     Pass an object to define custom key matchers for the path segments: {callback: function, matchKey: function}.
		 * @returns {$.Promise}
		 */
		loadKeyPath: function(keyPathList, optsOrCallback) {
			var callback,
				i,
				path,
				self = this,
				dfd = new $.Deferred(),
				parent = this.getRootNode(),
				sep = this.options.keyPathSeparator,
				pathSegList = [],
				opts = $.extend({}, optsOrCallback);

			// Prepare options
			if (typeof optsOrCallback === "function") {
				callback = optsOrCallback;
			} else if (optsOrCallback && optsOrCallback.callback) {
				callback = optsOrCallback.callback;
			}
			opts.callback = function(ctx, node, status) {
				if (callback) {
					callback.call(ctx, node, status);
				}
				dfd.notifyWith(ctx, [{ node: node, status: status }]);
			};
			if (opts.matchKey == null) {
				opts.matchKey = function(node, key) {
					return node.key === key;
				};
			}
			// Convert array of path strings to array of segment arrays
			if (!$.isArray(keyPathList)) {
				keyPathList = [keyPathList];
			}
			for (i = 0; i < keyPathList.length; i++) {
				path = keyPathList[i];
				// strip leading slash
				if (path.charAt(0) === sep) {
					path = path.substr(1);
				}
				// segListMap[path] = { parent: parent, segList: path.split(sep) };
				pathSegList.push(path.split(sep));
				// targetList.push({ parent: parent, segList: path.split(sep)/* , path: path*/});
			}
			// The timeout forces async behavior always (even if nodes are all loaded)
			// This way a potential progress() event will fire.
			setTimeout(function() {
				self._loadKeyPathImpl(dfd, opts, parent, pathSegList).done(
					function() {
						dfd.resolve();
					}
				);
			}, 0);
			return dfd.promise();
		},
		/*
		 * Resolve a list of paths, relative to one parent node.
		 */
		_loadKeyPathImpl: function(dfd, opts, parent, pathSegList) {
			var deferredList,
				i,
				key,
				node,
				nodeKey,
				remain,
				remainMap,
				tmpParent,
				segList,
				subDfd,
				self = this;

			function __findChild(parent, key) {
				// console.log("__findChild", key, parent);
				var i,
					l,
					cl = parent.children;

				if (cl) {
					for (i = 0, l = cl.length; i < l; i++) {
						if (opts.matchKey(cl[i], key)) {
							return cl[i];
						}
					}
				}
				return null;
			}

			// console.log("_loadKeyPathImpl, parent=", parent, ", pathSegList=", pathSegList);

			// Pass 1:
			// Handle all path segments for nodes that are already loaded.
			// Collect distinct top-most lazy nodes in a map.
			// Note that we can use node.key to de-dupe entries, even if a custom matcher would
			// look for other node attributes.
			// map[node.key] => {node: node, pathList: [list of remaining rest-paths]}
			remainMap = {};

			for (i = 0; i < pathSegList.length; i++) {
				segList = pathSegList[i];
				// target = targetList[i];

				// Traverse and pop path segments (i.e. keys), until we hit a lazy, unloaded node
				tmpParent = parent;
				while (segList.length) {
					key = segList.shift();
					node = __findChild(tmpParent, key);
					if (!node) {
						this.warn(
							"loadKeyPath: key not found: " +
								key +
								" (parent: " +
								tmpParent +
								")"
						);
						opts.callback(this, key, "error");
						break;
					} else if (segList.length === 0) {
						opts.callback(this, node, "ok");
						break;
					} else if (!node.lazy || node.hasChildren() !== undefined) {
						opts.callback(this, node, "loaded");
						tmpParent = node;
					} else {
						opts.callback(this, node, "loaded");
						key = node.key; //target.segList.join(sep);
						if (remainMap[key]) {
							remainMap[key].pathSegList.push(segList);
						} else {
							remainMap[key] = {
								parent: node,
								pathSegList: [segList],
							};
						}
						break;
					}
				}
			}
			// console.log("_loadKeyPathImpl AFTER pass 1, remainMap=", remainMap);

			// Now load all lazy nodes and continue iteration for remaining paths
			deferredList = [];

			// Avoid jshint warning 'Don't make functions within a loop.':
			function __lazyload(dfd, parent, pathSegList) {
				// console.log("__lazyload", parent, "pathSegList=", pathSegList);
				opts.callback(self, parent, "loading");
				parent
					.load()
					.done(function() {
						self._loadKeyPathImpl
							.call(self, dfd, opts, parent, pathSegList)
							.always(_makeResolveFunc(dfd, self));
					})
					.fail(function(errMsg) {
						self.warn("loadKeyPath: error loading lazy " + parent);
						opts.callback(self, node, "error");
						dfd.rejectWith(self);
					});
			}
			// remainMap contains parent nodes, each with a list of relative sub-paths.
			// We start loading all of them now, and pass the the list to each loader.
			for (nodeKey in remainMap) {
				if (remainMap.hasOwnProperty(nodeKey)) {
					remain = remainMap[nodeKey];
					// console.log("for(): remain=", remain, "remainMap=", remainMap);
					// key = remain.segList.shift();
					// node = __findChild(remain.parent, key);
					// if (node == null) {  // #576
					// 	// Issue #576, refactored for v2.27:
					// 	// The root cause was, that sometimes the wrong parent was used here
					// 	// to find the next segment.
					// 	// Falling back to getNodeByKey() was a hack that no longer works if a custom
					// 	// matcher is used, because we cannot assume that a single segment-key is unique
					// 	// throughout the tree.
					// 	self.error("loadKeyPath: error loading child by key '" + key + "' (parent: " + target.parent + ")", target);
					// 	// 	node = self.getNodeByKey(key);
					// 	continue;
					// }
					subDfd = new $.Deferred();
					deferredList.push(subDfd);
					__lazyload(subDfd, remain.parent, remain.pathSegList);
				}
			}
			// Return a promise that is resolved, when ALL paths were loaded
			return $.when.apply($, deferredList).promise();
		},
		/** Re-fire beforeActivate, activate, and (optional) focus events.
		 * Calling this method in the `init` event, will activate the node that
		 * was marked 'active' in the source data, and optionally set the keyboard
		 * focus.
		 * @param [setFocus=false]
		 */
		reactivate: function(setFocus) {
			var res,
				node = this.activeNode;

			if (!node) {
				return _getResolvedPromise();
			}
			this.activeNode = null; // Force re-activating
			res = node.setActive(true, { noFocus: true });
			if (setFocus) {
				node.setFocus();
			}
			return res;
		},
		/** Reload tree from source and return a promise.
		 * @param [source] optional new source (defaults to initial source data)
		 * @returns {$.Promise}
		 */
		reload: function(source) {
			this._callHook("treeClear", this);
			return this._callHook("treeLoad", this, source);
		},
		/**Render tree (i.e. create DOM elements for all top-level nodes).
		 * @param {boolean} [force=false] create DOM elemnts, even if parent is collapsed
		 * @param {boolean} [deep=false]
		 */
		render: function(force, deep) {
			return this.rootNode.render(force, deep);
		},
		/**(De)select all nodes.
		 * @param {boolean} [flag=true]
		 * @since 2.28
		 */
		selectAll: function(flag) {
			this.visit(function(node) {
				node.setSelected(flag);
			});
		},
		// TODO: selectKey: function(key, select)
		// TODO: serializeArray: function(stopOnParents)
		/**
		 * @param {boolean} [flag=true]
		 */
		setFocus: function(flag) {
			return this._callHook("treeSetFocus", this, flag);
		},
		/**
		 * Set current option value.
		 * (Note: this is the preferred variant of `$().fancytree("option", "KEY", VALUE)`)
		 * @param {string} name option name (may contain '.')
		 * @param {any} new value
		 */
		setOption: function(optionName, value) {
			return this.widget.option(optionName, value);
		},
		/**
		 * Call console.time() when in debug mode (verbose >= 4).
		 *
		 * @param {string} label
		 */
		debugTime: function(label) {
			if (this.options.debugLevel >= 4) {
				window.console.time(this + " - " + label);
			}
		},
		/**
		 * Call console.timeEnd() when in debug mode (verbose >= 4).
		 *
		 * @param {string} label
		 */
		debugTimeEnd: function(label) {
			if (this.options.debugLevel >= 4) {
				window.console.timeEnd(this + " - " + label);
			}
		},
		/**
		 * Return all nodes as nested list of {@link NodeData}.
		 *
		 * @param {boolean} [includeRoot=false] Returns the hidden system root node (and its children)
		 * @param {function} [callback] callback(dict, node) is called for every node, in order to allow modifications.
		 *     Return `false` to ignore this node or "skip" to include this node without its children.
		 * @returns {Array | object}
		 * @see FancytreeNode#toDict
		 */
		toDict: function(includeRoot, callback) {
			var res = this.rootNode.toDict(true, callback);
			return includeRoot ? res : res.children;
		},
		/* Implicitly called for string conversions.
		 * @returns {string}
		 */
		toString: function() {
			return "Fancytree@" + this._id;
			// return "<Fancytree(#" + this._id + ")>";
		},
		/* _trigger a widget event with additional node ctx.
		 * @see EventData
		 */
		_triggerNodeEvent: function(type, node, originalEvent, extra) {
			// this.debug("_trigger(" + type + "): '" + ctx.node.title + "'", ctx);
			var ctx = this._makeHookContext(node, originalEvent, extra),
				res = this.widget._trigger(type, originalEvent, ctx);
			if (res !== false && ctx.result !== undefined) {
				return ctx.result;
			}
			return res;
		},
		/* _trigger a widget event with additional tree data. */
		_triggerTreeEvent: function(type, originalEvent, extra) {
			// this.debug("_trigger(" + type + ")", ctx);
			var ctx = this._makeHookContext(this, originalEvent, extra),
				res = this.widget._trigger(type, originalEvent, ctx);

			if (res !== false && ctx.result !== undefined) {
				return ctx.result;
			}
			return res;
		},
		/** Call fn(node) for all nodes in hierarchical order (depth-first).
		 *
		 * @param {function} fn the callback function.
		 *     Return false to stop iteration, return "skip" to skip this node and children only.
		 * @returns {boolean} false, if the iterator was stopped.
		 */
		visit: function(fn) {
			return this.rootNode.visit(fn, false);
		},
		/** Call fn(node) for all nodes in vertical order, top down (or bottom up).<br>
		 * Stop iteration, if fn() returns false.<br>
		 * Return false if iteration was stopped.
		 *
		 * @param {function} fn the callback function.
		 *     Return false to stop iteration, return "skip" to skip this node and children only.
		 * @param {object} [options]
		 *     Defaults:
		 *     {start: First top node, reverse: false, includeSelf: true, includeHidden: false}
		 * @returns {boolean} false if iteration was cancelled
		 * @since 2.28
		 */
		visitRows: function(fn, opts) {
			if (!this.rootNode.hasChildren()) {
				return false;
			}
			if (opts && opts.reverse) {
				delete opts.reverse;
				return this._visitRowsUp(fn, opts);
			}
			opts = opts || {};

			var i,
				nextIdx,
				parent,
				res,
				siblings,
				siblingOfs = 0,
				skipFirstNode = opts.includeSelf === false,
				includeHidden = !!opts.includeHidden,
				checkFilter = !includeHidden && this.enableFilter,
				node = opts.start || this.rootNode.children[0];

			parent = node.parent;
			while (parent) {
				// visit siblings
				siblings = parent.children;
				nextIdx = siblings.indexOf(node) + siblingOfs;

				for (i = nextIdx; i < siblings.length; i++) {
					node = siblings[i];
					if (checkFilter && !node.match && !node.subMatchCount) {
						continue;
					}
					if (!skipFirstNode && fn(node) === false) {
						return false;
					}
					skipFirstNode = false;
					// Dive into node's child nodes
					if (
						node.children &&
						node.children.length &&
						(includeHidden || node.expanded)
					) {
						// Disable warning: Functions declared within loops referencing an outer
						// scoped variable may lead to confusing semantics:
						/*jshint -W083 */
						res = node.visit(function(n) {
							if (checkFilter && !n.match && !n.subMatchCount) {
								return "skip";
							}
							if (fn(n) === false) {
								return false;
							}
							if (!includeHidden && n.children && !n.expanded) {
								return "skip";
							}
						}, false);
						/*jshint +W083 */
						if (res === false) {
							return false;
						}
					}
				}
				// Visit parent nodes (bottom up)
				node = parent;
				parent = parent.parent;
				siblingOfs = 1; //
			}
			return true;
		},
		/* Call fn(node) for all nodes in vertical order, bottom up.
		 */
		_visitRowsUp: function(fn, opts) {
			var children,
				idx,
				parent,
				includeHidden = !!opts.includeHidden,
				node = opts.start || this.rootNode.children[0];

			while (true) {
				parent = node.parent;
				children = parent.children;

				if (children[0] === node) {
					// If this is already the first sibling, goto parent
					node = parent;
					if (!node.parent) {
						break; // first node of the tree
					}
					children = parent.children;
				} else {
					// Otherwise, goto prev. sibling
					idx = children.indexOf(node);
					node = children[idx - 1];
					// If the prev. sibling has children, follow down to last descendant
					while (
						// See: https://github.com/eslint/eslint/issues/11302
						// eslint-disable-next-line no-unmodified-loop-condition
						(includeHidden || node.expanded) &&
						node.children &&
						node.children.length
					) {
						children = node.children;
						parent = node;
						node = children[children.length - 1];
					}
				}
				// Skip invisible
				if (!includeHidden && !node.isVisible()) {
					continue;
				}
				if (fn(node) === false) {
					return false;
				}
			}
		},
		/** Write warning to browser console if debugLevel >= 2 (prepending tree info)
		 *
		 * @param {*} msg string or object or array of such
		 */
		warn: function(msg) {
			if (this.options.debugLevel >= 2) {
				Array.prototype.unshift.call(arguments, this.toString());
				consoleApply("warn", arguments);
			}
		},
	};

	/**
	 * These additional methods of the {@link Fancytree} class are 'hook functions'
	 * that can be used and overloaded by extensions.
	 *
	 * @see [writing extensions](https://github.com/mar10/fancytree/wiki/TutorialExtensions)
	 * @mixin Fancytree_Hooks
	 */
	$.extend(
		Fancytree.prototype,
		/** @lends Fancytree_Hooks# */
		{
			/** Default handling for mouse click events.
			 *
			 * @param {EventData} ctx
			 */
			nodeClick: function(ctx) {
				var activate,
					expand,
					// event = ctx.originalEvent,
					targetType = ctx.targetType,
					node = ctx.node;

				// this.debug("ftnode.onClick(" + event.type + "): ftnode:" + this + ", button:" + event.button + ", which: " + event.which, ctx);
				// TODO: use switch
				// TODO: make sure clicks on embedded <input> doesn't steal focus (see table sample)
				if (targetType === "expander") {
					if (node.isLoading()) {
						// #495: we probably got a click event while a lazy load is pending.
						// The 'expanded' state is not yet set, so 'toggle' would expand
						// and trigger lazyLoad again.
						// It would be better to allow to collapse/expand the status node
						// while loading (instead of ignoring), but that would require some
						// more work.
						node.debug("Got 2nd click while loading: ignored");
						return;
					}
					// Clicking the expander icon always expands/collapses
					this._callHook("nodeToggleExpanded", ctx);
				} else if (targetType === "checkbox") {
					// Clicking the checkbox always (de)selects
					this._callHook("nodeToggleSelected", ctx);
					if (ctx.options.focusOnSelect) {
						// #358
						this._callHook("nodeSetFocus", ctx, true);
					}
				} else {
					// Honor `clickFolderMode` for
					expand = false;
					activate = true;
					if (node.folder) {
						switch (ctx.options.clickFolderMode) {
							case 2: // expand only
								expand = true;
								activate = false;
								break;
							case 3: // expand and activate
								activate = true;
								expand = true; //!node.isExpanded();
								break;
							// else 1 or 4: just activate
						}
					}
					if (activate) {
						this.nodeSetFocus(ctx);
						this._callHook("nodeSetActive", ctx, true);
					}
					if (expand) {
						if (!activate) {
							// this._callHook("nodeSetFocus", ctx);
						}
						// this._callHook("nodeSetExpanded", ctx, true);
						this._callHook("nodeToggleExpanded", ctx);
					}
				}
				// Make sure that clicks stop, otherwise <a href='#'> jumps to the top
				// if(event.target.localName === "a" && event.target.className === "fancytree-title"){
				// 	event.preventDefault();
				// }
				// TODO: return promise?
			},
			/** Collapse all other  children of same parent.
			 *
			 * @param {EventData} ctx
			 * @param {object} callOpts
			 */
			nodeCollapseSiblings: function(ctx, callOpts) {
				// TODO: return promise?
				var ac,
					i,
					l,
					node = ctx.node;

				if (node.parent) {
					ac = node.parent.children;
					for (i = 0, l = ac.length; i < l; i++) {
						if (ac[i] !== node && ac[i].expanded) {
							this._callHook(
								"nodeSetExpanded",
								ac[i],
								false,
								callOpts
							);
						}
					}
				}
			},
			/** Default handling for mouse douleclick events.
			 * @param {EventData} ctx
			 */
			nodeDblclick: function(ctx) {
				// TODO: return promise?
				if (
					ctx.targetType === "title" &&
					ctx.options.clickFolderMode === 4
				) {
					// this.nodeSetFocus(ctx);
					// this._callHook("nodeSetActive", ctx, true);
					this._callHook("nodeToggleExpanded", ctx);
				}
				// TODO: prevent text selection on dblclicks
				if (ctx.targetType === "title") {
					ctx.originalEvent.preventDefault();
				}
			},
			/** Default handling for mouse keydown events.
			 *
			 * NOTE: this may be called with node == null if tree (but no node) has focus.
			 * @param {EventData} ctx
			 */
			nodeKeydown: function(ctx) {
				// TODO: return promise?
				var matchNode,
					stamp,
					_res,
					focusNode,
					event = ctx.originalEvent,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					which = event.which,
					// #909: Use event.key, to get unicode characters.
					// We can't use `/\w/.test(key)`, because that would
					// only detect plain ascii alpha-numerics. But we still need
					// to ignore modifier-only, whitespace, cursor-keys, etc.
					key = event.key || String.fromCharCode(which),
					specialModifiers = !!(
						event.altKey ||
						event.ctrlKey ||
						event.metaKey
					),
					isAlnum =
						!MODIFIERS[which] &&
						!SPECIAL_KEYCODES[which] &&
						!specialModifiers,
					$target = $(event.target),
					handled = true,
					activate = !(event.ctrlKey || !opts.autoActivate);

				// (node || FT).debug("ftnode.nodeKeydown(" + event.type + "): ftnode:" + this + ", charCode:" + event.charCode + ", keyCode: " + event.keyCode + ", which: " + event.which);
				// FT.debug( "eventToString(): " + FT.eventToString(event) + ", key='" + key + "', isAlnum: " + isAlnum );

				// Set focus to active (or first node) if no other node has the focus yet
				if (!node) {
					focusNode = this.getActiveNode() || this.getFirstChild();
					if (focusNode) {
						focusNode.setFocus();
						node = ctx.node = this.focusNode;
						node.debug("Keydown force focus on active node");
					}
				}

				if (
					opts.quicksearch &&
					isAlnum &&
					!$target.is(":input:enabled")
				) {
					// Allow to search for longer streaks if typed in quickly
					stamp = Date.now();
					if (stamp - tree.lastQuicksearchTime > 500) {
						tree.lastQuicksearchTerm = "";
					}
					tree.lastQuicksearchTime = stamp;
					tree.lastQuicksearchTerm += key;
					// tree.debug("quicksearch find", tree.lastQuicksearchTerm);
					matchNode = tree.findNextNode(
						tree.lastQuicksearchTerm,
						tree.getActiveNode()
					);
					if (matchNode) {
						matchNode.setActive();
					}
					event.preventDefault();
					return;
				}
				switch (FT.eventToString(event)) {
					case "+":
					case "=": // 187: '+' @ Chrome, Safari
						tree.nodeSetExpanded(ctx, true);
						break;
					case "-":
						tree.nodeSetExpanded(ctx, false);
						break;
					case "space":
						if (node.isPagingNode()) {
							tree._triggerNodeEvent("clickPaging", ctx, event);
						} else if (
							FT.evalOption("checkbox", node, node, opts, false)
						) {
							// #768
							tree.nodeToggleSelected(ctx);
						} else {
							tree.nodeSetActive(ctx, true);
						}
						break;
					case "return":
						tree.nodeSetActive(ctx, true);
						break;
					case "home":
					case "end":
					case "backspace":
					case "left":
					case "right":
					case "up":
					case "down":
						_res = node.navigate(event.which, activate);
						break;
					default:
						handled = false;
				}
				if (handled) {
					event.preventDefault();
				}
			},

			// /** Default handling for mouse keypress events. */
			// nodeKeypress: function(ctx) {
			//     var event = ctx.originalEvent;
			// },

			// /** Trigger lazyLoad event (async). */
			// nodeLazyLoad: function(ctx) {
			//     var node = ctx.node;
			//     if(this._triggerNodeEvent())
			// },
			/** Load child nodes (async).
			 *
			 * @param {EventData} ctx
			 * @param {object[]|object|string|$.Promise|function} source
			 * @returns {$.Promise} The deferred will be resolved as soon as the (ajax)
			 *     data was rendered.
			 */
			nodeLoadChildren: function(ctx, source) {
				var ajax,
					delay,
					dfd,
					res,
					tree = ctx.tree,
					node = ctx.node,
					requestId = Date.now();

				if ($.isFunction(source)) {
					source = source.call(tree, { type: "source" }, ctx);
					_assert(
						!$.isFunction(source),
						"source callback must not return another function"
					);
				}
				if (source.url) {
					if (node._requestId) {
						node.warn(
							"Recursive load request #" +
								requestId +
								" while #" +
								node._requestId +
								" is pending."
						);
						// } else {
						// 	node.debug("Send load request #" + requestId);
					}
					// `source` is an Ajax options object
					ajax = $.extend({}, ctx.options.ajax, source);
					node._requestId = requestId;
					if (ajax.debugDelay) {
						// simulate a slow server
						delay = ajax.debugDelay;
						delete ajax.debugDelay; // remove debug option
						if ($.isArray(delay)) {
							// random delay range [min..max]
							delay =
								delay[0] +
								Math.random() * (delay[1] - delay[0]);
						}
						node.warn(
							"nodeLoadChildren waiting debugDelay " +
								Math.round(delay) +
								" ms ..."
						);
						dfd = $.Deferred(function(dfd) {
							setTimeout(function() {
								$.ajax(ajax)
									.done(function() {
										dfd.resolveWith(this, arguments);
									})
									.fail(function() {
										dfd.rejectWith(this, arguments);
									});
							}, delay);
						});
					} else {
						dfd = $.ajax(ajax);
					}

					// Defer the deferred: we want to be able to reject, even if ajax
					// resolved ok.
					source = new $.Deferred();
					dfd.done(function(data, textStatus, jqXHR) {
						var errorObj, res;

						if (
							(this.dataType === "json" ||
								this.dataType === "jsonp") &&
							typeof data === "string"
						) {
							$.error(
								"Ajax request returned a string (did you get the JSON dataType wrong?)."
							);
						}
						if (node._requestId && node._requestId > requestId) {
							// The expected request time stamp is later than `requestId`
							// (which was kept as as closure variable to this handler function)
							// node.warn("Ignored load response for obsolete request #" + requestId + " (expected #" + node._requestId + ")");
							source.rejectWith(this, [RECURSIVE_REQUEST_ERROR]);
							return;
							// } else {
							// 	node.debug("Response returned for load request #" + requestId);
						}
						// postProcess is similar to the standard ajax dataFilter hook,
						// but it is also called for JSONP
						if (ctx.options.postProcess) {
							try {
								// The handler may either
								//   - modify `ctx.response` in-place (and leave `ctx.result` undefined)
								//     => res = undefined
								//   - return a replacement in `ctx.result`
								//     => res = <new data>
								// If res contains an `error` property, an error status is displayed
								res = tree._triggerNodeEvent(
									"postProcess",
									ctx,
									ctx.originalEvent,
									{
										response: data,
										error: null,
										dataType: this.dataType,
									}
								);
							} catch (e) {
								res = {
									error: e,
									message: "" + e,
									details: "postProcess failed",
								};
							}
							if (res.error) {
								errorObj = $.isPlainObject(res.error)
									? res.error
									: { message: res.error };
								errorObj = tree._makeHookContext(
									node,
									null,
									errorObj
								);
								source.rejectWith(this, [errorObj]);
								return;
							}
							if (
								$.isArray(res) ||
								($.isPlainObject(res) &&
									$.isArray(res.children))
							) {
								// Use `ctx.result` if valid
								// (otherwise use existing data, which may have been modified in-place)
								data = res;
							}
						} else if (
							data &&
							data.hasOwnProperty("d") &&
							ctx.options.enableAspx
						) {
							// Process ASPX WebMethod JSON object inside "d" property
							data =
								typeof data.d === "string"
									? $.parseJSON(data.d)
									: data.d;
						}
						source.resolveWith(this, [data]);
					}).fail(function(jqXHR, textStatus, errorThrown) {
						var errorObj = tree._makeHookContext(node, null, {
							error: jqXHR,
							args: Array.prototype.slice.call(arguments),
							message: errorThrown,
							details: jqXHR.status + ": " + errorThrown,
						});
						source.rejectWith(this, [errorObj]);
					});
				}
				// #383: accept and convert ECMAScript 6 Promise
				if ($.isFunction(source.then) && $.isFunction(source.catch)) {
					dfd = source;
					source = new $.Deferred();
					dfd.then(
						function(value) {
							source.resolve(value);
						},
						function(reason) {
							source.reject(reason);
						}
					);
				}
				if ($.isFunction(source.promise)) {
					// `source` is a deferred, i.e. ajax request
					// _assert(!node.isLoading(), "recursive load");
					tree.nodeSetStatus(ctx, "loading");

					source
						.done(function(children) {
							tree.nodeSetStatus(ctx, "ok");
							node._requestId = null;
						})
						.fail(function(error) {
							var ctxErr;

							if (error === RECURSIVE_REQUEST_ERROR) {
								node.warn(
									"Ignored response for obsolete load request #" +
										requestId +
										" (expected #" +
										node._requestId +
										")"
								);
								return;
							} else if (
								error.node &&
								error.error &&
								error.message
							) {
								// error is already a context object
								ctxErr = error;
							} else {
								ctxErr = tree._makeHookContext(node, null, {
									error: error, // it can be jqXHR or any custom error
									args: Array.prototype.slice.call(arguments),
									message: error
										? error.message || error.toString()
										: "",
								});
								if (ctxErr.message === "[object Object]") {
									ctxErr.message = "";
								}
							}
							node.warn(
								"Load children failed (" + ctxErr.message + ")",
								ctxErr
							);
							if (
								tree._triggerNodeEvent(
									"loadError",
									ctxErr,
									null
								) !== false
							) {
								tree.nodeSetStatus(
									ctx,
									"error",
									ctxErr.message,
									ctxErr.details
								);
							}
						});
				} else {
					if (ctx.options.postProcess) {
						// #792: Call postProcess for non-deferred source
						res = tree._triggerNodeEvent(
							"postProcess",
							ctx,
							ctx.originalEvent,
							{
								response: source,
								error: null,
								dataType: typeof source,
							}
						);

						if (
							$.isArray(res) ||
							($.isPlainObject(res) && $.isArray(res.children))
						) {
							// Use `ctx.result` if valid
							// (otherwise use existing data, which may have been modified in-place)
							source = res;
						}
					}
				}
				// $.when(source) resolves also for non-deferreds
				return $.when(source).done(function(children) {
					var metaData, noDataRes;

					if ($.isPlainObject(children)) {
						// We got {foo: 'abc', children: [...]}
						// Copy extra properties to tree.data.foo
						_assert(
							node.isRootNode(),
							"source may only be an object for root nodes (expecting an array of child objects otherwise)"
						);
						_assert(
							$.isArray(children.children),
							"if an object is passed as source, it must contain a 'children' array (all other properties are added to 'tree.data')"
						);
						metaData = children;
						children = children.children;
						delete metaData.children;
						// Copy some attributes to tree.data
						$.each(TREE_ATTRS, function(i, attr) {
							if (metaData[attr] !== undefined) {
								tree[attr] = metaData[attr];
								delete metaData[attr];
							}
						});
						// Copy all other attributes to tree.data.NAME
						$.extend(tree.data, metaData);
					}
					_assert($.isArray(children), "expected array of children");
					node._setChildren(children);

					if (tree.options.nodata && children.length === 0) {
						if ($.isFunction(tree.options.nodata)) {
							noDataRes = tree.options.nodata.call(
								tree,
								{ type: "nodata" },
								ctx
							);
						} else if (
							tree.options.nodata === true &&
							node.isRootNode()
						) {
							noDataRes = tree.options.strings.nodata;
						} else if (
							typeof tree.options.nodata === "string" &&
							node.isRootNode()
						) {
							noDataRes = tree.options.nodata;
						}
						if (noDataRes) {
							node.setStatus("nodata", noDataRes);
						}
					}
					// trigger fancytreeloadchildren
					tree._triggerNodeEvent("loadChildren", node);
				});
			},
			/** [Not Implemented]  */
			nodeLoadKeyPath: function(ctx, keyPathList) {
				// TODO: implement and improve
				// http://code.google.com/p/dynatree/issues/detail?id=222
			},
			/**
			 * Remove a single direct child of ctx.node.
			 * @param {EventData} ctx
			 * @param {FancytreeNode} childNode dircect child of ctx.node
			 */
			nodeRemoveChild: function(ctx, childNode) {
				var idx,
					node = ctx.node,
					// opts = ctx.options,
					subCtx = $.extend({}, ctx, { node: childNode }),
					children = node.children;

				// FT.debug("nodeRemoveChild()", node.toString(), childNode.toString());

				if (children.length === 1) {
					_assert(childNode === children[0], "invalid single child");
					return this.nodeRemoveChildren(ctx);
				}
				if (
					this.activeNode &&
					(childNode === this.activeNode ||
						this.activeNode.isDescendantOf(childNode))
				) {
					this.activeNode.setActive(false); // TODO: don't fire events
				}
				if (
					this.focusNode &&
					(childNode === this.focusNode ||
						this.focusNode.isDescendantOf(childNode))
				) {
					this.focusNode = null;
				}
				// TODO: persist must take care to clear select and expand cookies
				this.nodeRemoveMarkup(subCtx);
				this.nodeRemoveChildren(subCtx);
				idx = $.inArray(childNode, children);
				_assert(idx >= 0, "invalid child");
				// Notify listeners
				node.triggerModifyChild("remove", childNode);
				// Unlink to support GC
				childNode.visit(function(n) {
					n.parent = null;
				}, true);
				this._callHook("treeRegisterNode", this, false, childNode);
				// remove from child list
				children.splice(idx, 1);
			},
			/**Remove HTML markup for all descendents of ctx.node.
			 * @param {EventData} ctx
			 */
			nodeRemoveChildMarkup: function(ctx) {
				var node = ctx.node;

				// FT.debug("nodeRemoveChildMarkup()", node.toString());
				// TODO: Unlink attr.ftnode to support GC
				if (node.ul) {
					if (node.isRootNode()) {
						$(node.ul).empty();
					} else {
						$(node.ul).remove();
						node.ul = null;
					}
					node.visit(function(n) {
						n.li = n.ul = null;
					});
				}
			},
			/**Remove all descendants of ctx.node.
			 * @param {EventData} ctx
			 */
			nodeRemoveChildren: function(ctx) {
				var //subCtx,
					tree = ctx.tree,
					node = ctx.node,
					children = node.children;
				// opts = ctx.options;

				// FT.debug("nodeRemoveChildren()", node.toString());
				if (!children) {
					return;
				}
				if (this.activeNode && this.activeNode.isDescendantOf(node)) {
					this.activeNode.setActive(false); // TODO: don't fire events
				}
				if (this.focusNode && this.focusNode.isDescendantOf(node)) {
					this.focusNode = null;
				}
				// TODO: persist must take care to clear select and expand cookies
				this.nodeRemoveChildMarkup(ctx);
				// Unlink children to support GC
				// TODO: also delete this.children (not possible using visit())
				// subCtx = $.extend({}, ctx);
				node.triggerModifyChild("remove", null);
				node.visit(function(n) {
					n.parent = null;
					tree._callHook("treeRegisterNode", tree, false, n);
				});
				if (node.lazy) {
					// 'undefined' would be interpreted as 'not yet loaded' for lazy nodes
					node.children = [];
				} else {
					node.children = null;
				}
				if (!node.isRootNode()) {
					node.expanded = false; // #449, #459
				}
				this.nodeRenderStatus(ctx);
			},
			/**Remove HTML markup for ctx.node and all its descendents.
			 * @param {EventData} ctx
			 */
			nodeRemoveMarkup: function(ctx) {
				var node = ctx.node;
				// FT.debug("nodeRemoveMarkup()", node.toString());
				// TODO: Unlink attr.ftnode to support GC
				if (node.li) {
					$(node.li).remove();
					node.li = null;
				}
				this.nodeRemoveChildMarkup(ctx);
			},
			/**
			 * Create `<li><span>..</span> .. </li>` tags for this node.
			 *
			 * This method takes care that all HTML markup is created that is required
			 * to display this node in its current state.
			 *
			 * Call this method to create new nodes, or after the strucuture
			 * was changed (e.g. after moving this node or adding/removing children)
			 * nodeRenderTitle() and nodeRenderStatus() are implied.
			 *
			 * ```html
			 * <li id='KEY' ftnode=NODE>
			 *     <span class='fancytree-node fancytree-expanded fancytree-has-children fancytree-lastsib fancytree-exp-el fancytree-ico-e'>
			 *         <span class="fancytree-expander"></span>
			 *         <span class="fancytree-checkbox"></span> // only present in checkbox mode
			 *         <span class="fancytree-icon"></span>
			 *         <a href="#" class="fancytree-title"> Node 1 </a>
			 *     </span>
			 *     <ul> // only present if node has children
			 *         <li id='KEY' ftnode=NODE> child1 ... </li>
			 *         <li id='KEY' ftnode=NODE> child2 ... </li>
			 *     </ul>
			 * </li>
			 * ```
			 *
			 * @param {EventData} ctx
			 * @param {boolean} [force=false] re-render, even if html markup was already created
			 * @param {boolean} [deep=false] also render all descendants, even if parent is collapsed
			 * @param {boolean} [collapsed=false] force root node to be collapsed, so we can apply animated expand later
			 */
			nodeRender: function(ctx, force, deep, collapsed, _recursive) {
				/* This method must take care of all cases where the current data mode
				 * (i.e. node hierarchy) does not match the current markup.
				 *
				 * - node was not yet rendered:
				 *   create markup
				 * - node was rendered: exit fast
				 * - children have been added
				 * - children have been removed
				 */
				var childLI,
					childNode1,
					childNode2,
					i,
					l,
					next,
					subCtx,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					aria = opts.aria,
					firstTime = false,
					parent = node.parent,
					isRootNode = !parent,
					children = node.children,
					successorLi = null;
				// FT.debug("nodeRender(" + !!force + ", " + !!deep + ")", node.toString());

				if (tree._enableUpdate === false) {
					// tree.debug("no render", tree._enableUpdate);
					return;
				}
				if (!isRootNode && !parent.ul) {
					// Calling node.collapse on a deep, unrendered node
					return;
				}
				_assert(isRootNode || parent.ul, "parent UL must exist");

				// Render the node
				if (!isRootNode) {
					// Discard markup on force-mode, or if it is not linked to parent <ul>
					if (
						node.li &&
						(force || node.li.parentNode !== node.parent.ul)
					) {
						if (node.li.parentNode === node.parent.ul) {
							// #486: store following node, so we can insert the new markup there later
							successorLi = node.li.nextSibling;
						} else {
							// May happen, when a top-level node was dropped over another
							this.debug(
								"Unlinking " +
									node +
									" (must be child of " +
									node.parent +
									")"
							);
						}
						//	            this.debug("nodeRemoveMarkup...");
						this.nodeRemoveMarkup(ctx);
					}
					// Create <li><span /> </li>
					// node.debug("render...");
					if (node.li) {
						// this.nodeRenderTitle(ctx);
						this.nodeRenderStatus(ctx);
					} else {
						// node.debug("render... really");
						firstTime = true;
						node.li = document.createElement("li");
						node.li.ftnode = node;

						if (node.key && opts.generateIds) {
							node.li.id = opts.idPrefix + node.key;
						}
						node.span = document.createElement("span");
						node.span.className = "fancytree-node";
						if (aria && !node.tr) {
							$(node.li).attr("role", "treeitem");
						}
						node.li.appendChild(node.span);

						// Create inner HTML for the <span> (expander, checkbox, icon, and title)
						this.nodeRenderTitle(ctx);

						// Allow tweaking and binding, after node was created for the first time
						if (opts.createNode) {
							opts.createNode.call(
								tree,
								{ type: "createNode" },
								ctx
							);
						}
					}
					// Allow tweaking after node state was rendered
					if (opts.renderNode) {
						opts.renderNode.call(tree, { type: "renderNode" }, ctx);
					}
				}

				// Visit child nodes
				if (children) {
					if (isRootNode || node.expanded || deep === true) {
						// Create a UL to hold the children
						if (!node.ul) {
							node.ul = document.createElement("ul");
							if (
								(collapsed === true && !_recursive) ||
								!node.expanded
							) {
								// hide top UL, so we can use an animation to show it later
								node.ul.style.display = "none";
							}
							if (aria) {
								$(node.ul).attr("role", "group");
							}
							if (node.li) {
								// issue #67
								node.li.appendChild(node.ul);
							} else {
								node.tree.$div.append(node.ul);
							}
						}
						// Add child markup
						for (i = 0, l = children.length; i < l; i++) {
							subCtx = $.extend({}, ctx, { node: children[i] });
							this.nodeRender(subCtx, force, deep, false, true);
						}
						// Remove <li> if nodes have moved to another parent
						childLI = node.ul.firstChild;
						while (childLI) {
							childNode2 = childLI.ftnode;
							if (childNode2 && childNode2.parent !== node) {
								node.debug(
									"_fixParent: remove missing " + childNode2,
									childLI
								);
								next = childLI.nextSibling;
								childLI.parentNode.removeChild(childLI);
								childLI = next;
							} else {
								childLI = childLI.nextSibling;
							}
						}
						// Make sure, that <li> order matches node.children order.
						childLI = node.ul.firstChild;
						for (i = 0, l = children.length - 1; i < l; i++) {
							childNode1 = children[i];
							childNode2 = childLI.ftnode;
							if (childNode1 === childNode2) {
								childLI = childLI.nextSibling;
							} else {
								// node.debug("_fixOrder: mismatch at index " + i + ": " + childNode1 + " != " + childNode2);
								node.ul.insertBefore(
									childNode1.li,
									childNode2.li
								);
							}
						}
					}
				} else {
					// No children: remove markup if any
					if (node.ul) {
						// alert("remove child markup for " + node);
						this.warn("remove child markup for " + node);
						this.nodeRemoveChildMarkup(ctx);
					}
				}
				if (!isRootNode) {
					// Update element classes according to node state
					// this.nodeRenderStatus(ctx);
					// Finally add the whole structure to the DOM, so the browser can render
					if (firstTime) {
						// #486: successorLi is set, if we re-rendered (i.e. discarded)
						// existing markup, which  we want to insert at the same position.
						// (null is equivalent to append)
						// 		parent.ul.appendChild(node.li);
						parent.ul.insertBefore(node.li, successorLi);
					}
				}
			},
			/** Create HTML inside the node's outer `<span>` (i.e. expander, checkbox,
			 * icon, and title).
			 *
			 * nodeRenderStatus() is implied.
			 * @param {EventData} ctx
			 * @param {string} [title] optinal new title
			 */
			nodeRenderTitle: function(ctx, title) {
				// set node connector images, links and text
				var checkbox,
					className,
					icon,
					nodeTitle,
					role,
					tabindex,
					tooltip,
					iconTooltip,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					aria = opts.aria,
					level = node.getLevel(),
					ares = [];

				if (title !== undefined) {
					node.title = title;
				}
				if (!node.span || tree._enableUpdate === false) {
					// Silently bail out if node was not rendered yet, assuming
					// node.render() will be called as the node becomes visible
					return;
				}
				// Connector (expanded, expandable or simple)
				role =
					aria && node.hasChildren() !== false
						? " role='button'"
						: "";
				if (level < opts.minExpandLevel) {
					if (!node.lazy) {
						node.expanded = true;
					}
					if (level > 1) {
						ares.push(
							"<span " +
								role +
								" class='fancytree-expander fancytree-expander-fixed'></span>"
						);
					}
					// .. else (i.e. for root level) skip expander/connector alltogether
				} else {
					ares.push(
						"<span " + role + " class='fancytree-expander'></span>"
					);
				}
				// Checkbox mode
				checkbox = FT.evalOption("checkbox", node, node, opts, false);

				if (checkbox && !node.isStatusNode()) {
					role = aria ? " role='checkbox'" : "";
					className = "fancytree-checkbox";
					if (
						checkbox === "radio" ||
						(node.parent && node.parent.radiogroup)
					) {
						className += " fancytree-radio";
					}
					ares.push(
						"<span " + role + " class='" + className + "'></span>"
					);
				}
				// Folder or doctype icon
				if (node.data.iconClass !== undefined) {
					// 2015-11-16
					// Handle / warn about backward compatibility
					if (node.icon) {
						$.error(
							"'iconClass' node option is deprecated since v2.14.0: use 'icon' only instead"
						);
					} else {
						node.warn(
							"'iconClass' node option is deprecated since v2.14.0: use 'icon' instead"
						);
						node.icon = node.data.iconClass;
					}
				}
				// If opts.icon is a callback and returns something other than undefined, use that
				// else if node.icon is a boolean or string, use that
				// else if opts.icon is a boolean or string, use that
				// else show standard icon (which may be different for folders or documents)
				icon = FT.evalOption("icon", node, node, opts, true);
				// if( typeof icon !== "boolean" ) {
				// 	// icon is defined, but not true/false: must be a string
				// 	icon = "" + icon;
				// }
				if (icon !== false) {
					role = aria ? " role='presentation'" : "";

					iconTooltip = FT.evalOption(
						"iconTooltip",
						node,
						node,
						opts,
						null
					);
					iconTooltip = iconTooltip
						? " title='" + _escapeTooltip(iconTooltip) + "'"
						: "";

					if (typeof icon === "string") {
						if (TEST_IMG.test(icon)) {
							// node.icon is an image url. Prepend imagePath
							icon =
								icon.charAt(0) === "/"
									? icon
									: (opts.imagePath || "") + icon;
							ares.push(
								"<img src='" +
									icon +
									"' class='fancytree-icon'" +
									iconTooltip +
									" alt='' />"
							);
						} else {
							ares.push(
								"<span " +
									role +
									" class='fancytree-custom-icon " +
									icon +
									"'" +
									iconTooltip +
									"></span>"
							);
						}
					} else if (icon.text) {
						ares.push(
							"<span " +
								role +
								" class='fancytree-custom-icon " +
								(icon.addClass || "") +
								"'" +
								iconTooltip +
								">" +
								FT.escapeHtml(icon.text) +
								"</span>"
						);
					} else if (icon.html) {
						ares.push(
							"<span " +
								role +
								" class='fancytree-custom-icon " +
								(icon.addClass || "") +
								"'" +
								iconTooltip +
								">" +
								icon.html +
								"</span>"
						);
					} else {
						// standard icon: theme css will take care of this
						ares.push(
							"<span " +
								role +
								" class='fancytree-icon'" +
								iconTooltip +
								"></span>"
						);
					}
				}
				// Node title
				nodeTitle = "";
				if (opts.renderTitle) {
					nodeTitle =
						opts.renderTitle.call(
							tree,
							{ type: "renderTitle" },
							ctx
						) || "";
				}
				if (!nodeTitle) {
					tooltip = FT.evalOption("tooltip", node, node, opts, null);
					if (tooltip === true) {
						tooltip = node.title;
					}
					// if( node.tooltip ) {
					// 	tooltip = node.tooltip;
					// } else if ( opts.tooltip ) {
					// 	tooltip = opts.tooltip === true ? node.title : opts.tooltip.call(tree, node);
					// }
					tooltip = tooltip
						? " title='" + _escapeTooltip(tooltip) + "'"
						: "";
					tabindex = opts.titlesTabbable ? " tabindex='0'" : "";

					nodeTitle =
						"<span class='fancytree-title'" +
						tooltip +
						tabindex +
						">" +
						(opts.escapeTitles
							? FT.escapeHtml(node.title)
							: node.title) +
						"</span>";
				}
				ares.push(nodeTitle);
				// Note: this will trigger focusout, if node had the focus
				//$(node.span).html(ares.join("")); // it will cleanup the jQuery data currently associated with SPAN (if any), but it executes more slowly
				node.span.innerHTML = ares.join("");
				// Update CSS classes
				this.nodeRenderStatus(ctx);
				if (opts.enhanceTitle) {
					ctx.$title = $(">span.fancytree-title", node.span);
					nodeTitle =
						opts.enhanceTitle.call(
							tree,
							{ type: "enhanceTitle" },
							ctx
						) || "";
				}
			},
			/** Update element classes according to node state.
			 * @param {EventData} ctx
			 */
			nodeRenderStatus: function(ctx) {
				// Set classes for current status
				var $ariaElem,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					// 	nodeContainer = node[tree.nodeContainerAttrName],
					hasChildren = node.hasChildren(),
					isLastSib = node.isLastSibling(),
					aria = opts.aria,
					cn = opts._classNames,
					cnList = [],
					statusElem = node[tree.statusClassPropName];

				if (!statusElem || tree._enableUpdate === false) {
					// if this function is called for an unrendered node, ignore it (will be updated on nect render anyway)
					return;
				}
				if (aria) {
					$ariaElem = $(node.tr || node.li);
				}
				// Build a list of class names that we will add to the node <span>
				cnList.push(cn.node);
				if (tree.activeNode === node) {
					cnList.push(cn.active);
					// 		$(">span.fancytree-title", statusElem).attr("tabindex", "0");
					// 		tree.$container.removeAttr("tabindex");
					// }else{
					// 		$(">span.fancytree-title", statusElem).removeAttr("tabindex");
					// 		tree.$container.attr("tabindex", "0");
				}
				if (tree.focusNode === node) {
					cnList.push(cn.focused);
				}
				if (node.expanded) {
					cnList.push(cn.expanded);
				}
				if (aria) {
					if (hasChildren === false) {
						$ariaElem.removeAttr("aria-expanded");
					} else {
						$ariaElem.attr("aria-expanded", Boolean(node.expanded));
					}
				}
				if (node.folder) {
					cnList.push(cn.folder);
				}
				if (hasChildren !== false) {
					cnList.push(cn.hasChildren);
				}
				// TODO: required?
				if (isLastSib) {
					cnList.push(cn.lastsib);
				}
				if (node.lazy && node.children == null) {
					cnList.push(cn.lazy);
				}
				if (node.partload) {
					cnList.push(cn.partload);
				}
				if (node.partsel) {
					cnList.push(cn.partsel);
				}
				if (FT.evalOption("unselectable", node, node, opts, false)) {
					cnList.push(cn.unselectable);
				}
				if (node._isLoading) {
					cnList.push(cn.loading);
				}
				if (node._error) {
					cnList.push(cn.error);
				}
				if (node.statusNodeType) {
					cnList.push(cn.statusNodePrefix + node.statusNodeType);
				}
				if (node.selected) {
					cnList.push(cn.selected);
					if (aria) {
						$ariaElem.attr("aria-selected", true);
					}
				} else if (aria) {
					$ariaElem.attr("aria-selected", false);
				}
				if (node.extraClasses) {
					cnList.push(node.extraClasses);
				}
				// IE6 doesn't correctly evaluate multiple class names,
				// so we create combined class names that can be used in the CSS
				if (hasChildren === false) {
					cnList.push(
						cn.combinedExpanderPrefix + "n" + (isLastSib ? "l" : "")
					);
				} else {
					cnList.push(
						cn.combinedExpanderPrefix +
							(node.expanded ? "e" : "c") +
							(node.lazy && node.children == null ? "d" : "") +
							(isLastSib ? "l" : "")
					);
				}
				cnList.push(
					cn.combinedIconPrefix +
						(node.expanded ? "e" : "c") +
						(node.folder ? "f" : "")
				);
				// node.span.className = cnList.join(" ");
				statusElem.className = cnList.join(" ");

				// TODO: we should not set this in the <span> tag also, if we set it here:
				// Maybe most (all) of the classes should be set in LI instead of SPAN?
				if (node.li) {
					// #719: we have to consider that there may be already other classes:
					$(node.li).toggleClass(cn.lastsib, isLastSib);
				}
			},
			/** Activate node.
			 * flag defaults to true.
			 * If flag is true, the node is activated (must be a synchronous operation)
			 * If flag is false, the node is deactivated (must be a synchronous operation)
			 * @param {EventData} ctx
			 * @param {boolean} [flag=true]
			 * @param {object} [opts] additional options. Defaults to {noEvents: false, noFocus: false}
			 * @returns {$.Promise}
			 */
			nodeSetActive: function(ctx, flag, callOpts) {
				// Handle user click / [space] / [enter], according to clickFolderMode.
				callOpts = callOpts || {};
				var subCtx,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					noEvents = callOpts.noEvents === true,
					noFocus = callOpts.noFocus === true,
					scroll = callOpts.scrollIntoView !== false,
					isActive = node === tree.activeNode;

				// flag defaults to true
				flag = flag !== false;
				// node.debug("nodeSetActive", flag);

				if (isActive === flag) {
					// Nothing to do
					return _getResolvedPromise(node);
				} else if (
					flag &&
					!noEvents &&
					this._triggerNodeEvent(
						"beforeActivate",
						node,
						ctx.originalEvent
					) === false
				) {
					// Callback returned false
					return _getRejectedPromise(node, ["rejected"]);
				}
				if (flag) {
					if (tree.activeNode) {
						_assert(
							tree.activeNode !== node,
							"node was active (inconsistency)"
						);
						subCtx = $.extend({}, ctx, { node: tree.activeNode });
						tree.nodeSetActive(subCtx, false);
						_assert(
							tree.activeNode === null,
							"deactivate was out of sync?"
						);
					}

					if (opts.activeVisible) {
						// If no focus is set (noFocus: true) and there is no focused node, this node is made visible.
						// scroll = noFocus && tree.focusNode == null;
						// #863: scroll by default (unless `scrollIntoView: false` was passed)
						node.makeVisible({ scrollIntoView: scroll });
					}
					tree.activeNode = node;
					tree.nodeRenderStatus(ctx);
					if (!noFocus) {
						tree.nodeSetFocus(ctx);
					}
					if (!noEvents) {
						tree._triggerNodeEvent(
							"activate",
							node,
							ctx.originalEvent
						);
					}
				} else {
					_assert(
						tree.activeNode === node,
						"node was not active (inconsistency)"
					);
					tree.activeNode = null;
					this.nodeRenderStatus(ctx);
					if (!noEvents) {
						ctx.tree._triggerNodeEvent(
							"deactivate",
							node,
							ctx.originalEvent
						);
					}
				}
				return _getResolvedPromise(node);
			},
			/** Expand or collapse node, return Deferred.promise.
			 *
			 * @param {EventData} ctx
			 * @param {boolean} [flag=true]
			 * @param {object} [opts] additional options. Defaults to `{noAnimation: false, noEvents: false}`
			 * @returns {$.Promise} The deferred will be resolved as soon as the (lazy)
			 *     data was retrieved, rendered, and the expand animation finished.
			 */
			nodeSetExpanded: function(ctx, flag, callOpts) {
				callOpts = callOpts || {};
				var _afterLoad,
					dfd,
					i,
					l,
					parents,
					prevAC,
					node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					noAnimation = callOpts.noAnimation === true,
					noEvents = callOpts.noEvents === true;

				// flag defaults to true
				flag = flag !== false;

				// node.debug("nodeSetExpanded(" + flag + ")");

				if ((node.expanded && flag) || (!node.expanded && !flag)) {
					// Nothing to do
					// node.debug("nodeSetExpanded(" + flag + "): nothing to do");
					return _getResolvedPromise(node);
				} else if (flag && !node.lazy && !node.hasChildren()) {
					// Prevent expanding of empty nodes
					// return _getRejectedPromise(node, ["empty"]);
					return _getResolvedPromise(node);
				} else if (!flag && node.getLevel() < opts.minExpandLevel) {
					// Prevent collapsing locked levels
					return _getRejectedPromise(node, ["locked"]);
				} else if (
					!noEvents &&
					this._triggerNodeEvent(
						"beforeExpand",
						node,
						ctx.originalEvent
					) === false
				) {
					// Callback returned false
					return _getRejectedPromise(node, ["rejected"]);
				}
				// If this node inside a collpased node, no animation and scrolling is needed
				if (!noAnimation && !node.isVisible()) {
					noAnimation = callOpts.noAnimation = true;
				}

				dfd = new $.Deferred();

				// Auto-collapse mode: collapse all siblings
				if (flag && !node.expanded && opts.autoCollapse) {
					parents = node.getParentList(false, true);
					prevAC = opts.autoCollapse;
					try {
						opts.autoCollapse = false;
						for (i = 0, l = parents.length; i < l; i++) {
							// TODO: should return promise?
							this._callHook(
								"nodeCollapseSiblings",
								parents[i],
								callOpts
							);
						}
					} finally {
						opts.autoCollapse = prevAC;
					}
				}
				// Trigger expand/collapse after expanding
				dfd.done(function() {
					var lastChild = node.getLastChild();

					if (
						flag &&
						opts.autoScroll &&
						!noAnimation &&
						lastChild &&
						tree._enableUpdate
					) {
						// Scroll down to last child, but keep current node visible
						lastChild
							.scrollIntoView(true, { topNode: node })
							.always(function() {
								if (!noEvents) {
									ctx.tree._triggerNodeEvent(
										flag ? "expand" : "collapse",
										ctx
									);
								}
							});
					} else {
						if (!noEvents) {
							ctx.tree._triggerNodeEvent(
								flag ? "expand" : "collapse",
								ctx
							);
						}
					}
				});
				// vvv Code below is executed after loading finished:
				_afterLoad = function(callback) {
					var cn = opts._classNames,
						isVisible,
						isExpanded,
						effect = opts.toggleEffect;

					node.expanded = flag;
					tree._callHook(
						"treeStructureChanged",
						ctx,
						flag ? "expand" : "collapse"
					);
					// Create required markup, but make sure the top UL is hidden, so we
					// can animate later
					tree._callHook("nodeRender", ctx, false, false, true);

					// Hide children, if node is collapsed
					if (node.ul) {
						isVisible = node.ul.style.display !== "none";
						isExpanded = !!node.expanded;
						if (isVisible === isExpanded) {
							node.warn(
								"nodeSetExpanded: UL.style.display already set"
							);
						} else if (!effect || noAnimation) {
							node.ul.style.display =
								node.expanded || !parent ? "" : "none";
						} else {
							// The UI toggle() effect works with the ext-wide extension,
							// while jQuery.animate() has problems when the title span
							// has position: absolute.
							// Since jQuery UI 1.12, the blind effect requires the parent
							// element to have 'position: relative'.
							// See #716, #717
							$(node.li).addClass(cn.animating); // #717

							if ($.isFunction($(node.ul)[effect.effect])) {
								// tree.debug( "use jquery." + effect.effect + " method" );
								$(node.ul)[effect.effect]({
									duration: effect.duration,
									always: function() {
										// node.debug("fancytree-animating end: " + node.li.className);
										$(this).removeClass(cn.animating); // #716
										$(node.li).removeClass(cn.animating); // #717
										callback();
									},
								});
							} else {
								// The UI toggle() effect works with the ext-wide extension,
								// while jQuery.animate() has problems when the title span
								// has positon: absolute.
								// Since jQuery UI 1.12, the blind effect requires the parent
								// element to have 'position: relative'.
								// See #716, #717
								// tree.debug("use specified effect (" + effect.effect + ") with the jqueryui.toggle method");

								// try to stop an animation that might be already in progress
								$(node.ul).stop(true, true); //< does not work after resetLazy has been called for a node whose animation wasn't complete and effect was "blind"

								// dirty fix to remove a defunct animation (effect: "blind") after resetLazy has been called
								$(node.ul)
									.parent()
									.find(".ui-effects-placeholder")
									.remove();

								$(node.ul).toggle(
									effect.effect,
									effect.options,
									effect.duration,
									function() {
										// node.debug("fancytree-animating end: " + node.li.className);
										$(this).removeClass(cn.animating); // #716
										$(node.li).removeClass(cn.animating); // #717
										callback();
									}
								);
							}
							return;
						}
					}
					callback();
				};
				// ^^^ Code above is executed after loading finshed.

				// Load lazy nodes, if any. Then continue with _afterLoad()
				if (flag && node.lazy && node.hasChildren() === undefined) {
					// node.debug("nodeSetExpanded: load start...");
					node.load()
						.done(function() {
							// node.debug("nodeSetExpanded: load done");
							if (dfd.notifyWith) {
								// requires jQuery 1.6+
								dfd.notifyWith(node, ["loaded"]);
							}
							_afterLoad(function() {
								dfd.resolveWith(node);
							});
						})
						.fail(function(errMsg) {
							_afterLoad(function() {
								dfd.rejectWith(node, [
									"load failed (" + errMsg + ")",
								]);
							});
						});
					/*
					var source = tree._triggerNodeEvent("lazyLoad", node, ctx.originalEvent);
					_assert(typeof source !== "boolean", "lazyLoad event must return source in data.result");
					node.debug("nodeSetExpanded: load start...");
					this._callHook("nodeLoadChildren", ctx, source).done(function(){
						node.debug("nodeSetExpanded: load done");
						if(dfd.notifyWith){ // requires jQuery 1.6+
							dfd.notifyWith(node, ["loaded"]);
						}
						_afterLoad.call(tree);
					}).fail(function(errMsg){
						dfd.rejectWith(node, ["load failed (" + errMsg + ")"]);
					});
					*/
				} else {
					_afterLoad(function() {
						dfd.resolveWith(node);
					});
				}
				// node.debug("nodeSetExpanded: returns");
				return dfd.promise();
			},
			/** Focus or blur this node.
			 * @param {EventData} ctx
			 * @param {boolean} [flag=true]
			 */
			nodeSetFocus: function(ctx, flag) {
				// ctx.node.debug("nodeSetFocus(" + flag + ")");
				var ctx2,
					tree = ctx.tree,
					node = ctx.node,
					opts = tree.options,
					// et = ctx.originalEvent && ctx.originalEvent.type,
					isInput = ctx.originalEvent
						? $(ctx.originalEvent.target).is(":input")
						: false;

				flag = flag !== false;

				// (node || tree).debug("nodeSetFocus(" + flag + "), event: " + et + ", isInput: "+ isInput);
				// Blur previous node if any
				if (tree.focusNode) {
					if (tree.focusNode === node && flag) {
						// node.debug("nodeSetFocus(" + flag + "): nothing to do");
						return;
					}
					ctx2 = $.extend({}, ctx, { node: tree.focusNode });
					tree.focusNode = null;
					this._triggerNodeEvent("blur", ctx2);
					this._callHook("nodeRenderStatus", ctx2);
				}
				// Set focus to container and node
				if (flag) {
					if (!this.hasFocus()) {
						node.debug("nodeSetFocus: forcing container focus");
						this._callHook("treeSetFocus", ctx, true, {
							calledByNode: true,
						});
					}
					node.makeVisible({ scrollIntoView: false });
					tree.focusNode = node;
					if (opts.titlesTabbable) {
						if (!isInput) {
							// #621
							$(node.span)
								.find(".fancytree-title")
								.focus();
						}
					}
					if (opts.aria) {
						// Set active descendant to node's span ID (create one, if needed)
						$(tree.$container).attr(
							"aria-activedescendant",
							$(node.tr || node.li)
								.uniqueId()
								.attr("id")
						);
						// "ftal_" + opts.idPrefix + node.key);
					}
					// $(node.span).find(".fancytree-title").focus();
					this._triggerNodeEvent("focus", ctx);

					// determine if we have focus on or inside tree container
					var hasFancytreeFocus =
						document.activeElement === tree.$container.get(0) ||
						$(document.activeElement, tree.$container).length >= 1;

					if (!hasFancytreeFocus) {
						// We cannot set KB focus to a node, so use the tree container
						// #563, #570: IE scrolls on every call to .focus(), if the container
						// is partially outside the viewport. So do it only, when absolutely
						// necessary.
						$(tree.$container).focus();
					}

					// if( opts.autoActivate ){
					// 	tree.nodeSetActive(ctx, true);
					// }
					if (opts.autoScroll) {
						node.scrollIntoView();
					}
					this._callHook("nodeRenderStatus", ctx);
				}
			},
			/** (De)Select node, return new status (sync).
			 *
			 * @param {EventData} ctx
			 * @param {boolean} [flag=true]
			 * @param {object} [opts] additional options. Defaults to {noEvents: false,
			 *     propagateDown: null, propagateUp: null,
			 *     callback: null,
			 *     }
			 * @returns {boolean} previous status
			 */
			nodeSetSelected: function(ctx, flag, callOpts) {
				callOpts = callOpts || {};
				var node = ctx.node,
					tree = ctx.tree,
					opts = ctx.options,
					noEvents = callOpts.noEvents === true,
					parent = node.parent;

				// flag defaults to true
				flag = flag !== false;

				// node.debug("nodeSetSelected(" + flag + ")", ctx);

				// Cannot (de)select unselectable nodes directly (only by propagation or
				// by setting the `.selected` property)
				if (FT.evalOption("unselectable", node, node, opts, false)) {
					return;
				}

				// Remember the user's intent, in case down -> up propagation prevents
				// applying it to node.selected
				node._lastSelectIntent = flag; // Confusing use of '!'

				// Nothing to do?
				if (!!node.selected === flag) {
					if (opts.selectMode === 3 && node.partsel && !flag) {
						// If propagation prevented selecting this node last time, we still
						// want to allow to apply setSelected(false) now
					} else {
						return flag;
					}
				}

				if (
					!noEvents &&
					this._triggerNodeEvent(
						"beforeSelect",
						node,
						ctx.originalEvent
					) === false
				) {
					return !!node.selected;
				}
				if (flag && opts.selectMode === 1) {
					// single selection mode (we don't uncheck all tree nodes, for performance reasons)
					if (tree.lastSelectedNode) {
						tree.lastSelectedNode.setSelected(false);
					}
					node.selected = flag;
				} else if (
					opts.selectMode === 3 &&
					parent &&
					!parent.radiogroup &&
					!node.radiogroup
				) {
					// multi-hierarchical selection mode
					node.selected = flag;
					node.fixSelection3AfterClick(callOpts);
				} else if (parent && parent.radiogroup) {
					node.visitSiblings(function(n) {
						n._changeSelectStatusAttrs(flag && n === node);
					}, true);
				} else {
					// default: selectMode: 2, multi selection mode
					node.selected = flag;
				}
				this.nodeRenderStatus(ctx);
				tree.lastSelectedNode = flag ? node : null;
				if (!noEvents) {
					tree._triggerNodeEvent("select", ctx);
				}
			},
			/** Show node status (ok, loading, error, nodata) using styles and a dummy child node.
			 *
			 * @param {EventData} ctx
			 * @param status
			 * @param message
			 * @param details
			 * @since 2.3
			 */
			nodeSetStatus: function(ctx, status, message, details) {
				var node = ctx.node,
					tree = ctx.tree;

				function _clearStatusNode() {
					// Remove dedicated dummy node, if any
					var firstChild = node.children ? node.children[0] : null;
					if (firstChild && firstChild.isStatusNode()) {
						try {
							// I've seen exceptions here with loadKeyPath...
							if (node.ul) {
								node.ul.removeChild(firstChild.li);
								firstChild.li = null; // avoid leaks (DT issue 215)
							}
						} catch (e) {}
						if (node.children.length === 1) {
							node.children = [];
						} else {
							node.children.shift();
						}
						tree._callHook(
							"treeStructureChanged",
							ctx,
							"clearStatusNode"
						);
					}
				}
				function _setStatusNode(data, type) {
					// Create/modify the dedicated dummy node for 'loading...' or
					// 'error!' status. (only called for direct child of the invisible
					// system root)
					var firstChild = node.children ? node.children[0] : null;
					if (firstChild && firstChild.isStatusNode()) {
						$.extend(firstChild, data);
						firstChild.statusNodeType = type;
						tree._callHook("nodeRenderTitle", firstChild);
					} else {
						node._setChildren([data]);
						tree._callHook(
							"treeStructureChanged",
							ctx,
							"setStatusNode"
						);
						node.children[0].statusNodeType = type;
						tree.render();
					}
					return node.children[0];
				}

				switch (status) {
					case "ok":
						_clearStatusNode();
						node._isLoading = false;
						node._error = null;
						node.renderStatus();
						break;
					case "loading":
						if (!node.parent) {
							_setStatusNode(
								{
									title:
										tree.options.strings.loading +
										(message ? " (" + message + ")" : ""),
									// icon: true,  // needed for 'loding' icon
									checkbox: false,
									tooltip: details,
								},
								status
							);
						}
						node._isLoading = true;
						node._error = null;
						node.renderStatus();
						break;
					case "error":
						_setStatusNode(
							{
								title:
									tree.options.strings.loadError +
									(message ? " (" + message + ")" : ""),
								// icon: false,
								checkbox: false,
								tooltip: details,
							},
							status
						);
						node._isLoading = false;
						node._error = { message: message, details: details };
						node.renderStatus();
						break;
					case "nodata":
						_setStatusNode(
							{
								title: message || tree.options.strings.noData,
								// icon: false,
								checkbox: false,
								tooltip: details,
							},
							status
						);
						node._isLoading = false;
						node._error = null;
						node.renderStatus();
						break;
					default:
						$.error("invalid node status " + status);
				}
			},
			/**
			 *
			 * @param {EventData} ctx
			 */
			nodeToggleExpanded: function(ctx) {
				return this.nodeSetExpanded(ctx, !ctx.node.expanded);
			},
			/**
			 * @param {EventData} ctx
			 */
			nodeToggleSelected: function(ctx) {
				var node = ctx.node,
					flag = !node.selected;

				// In selectMode: 3 this node may be unselected+partsel, even if
				// setSelected(true) was called before, due to `unselectable` children.
				// In this case, we now toggle as `setSelected(false)`
				if (
					node.partsel &&
					!node.selected &&
					node._lastSelectIntent === true
				) {
					flag = false;
					node.selected = true; // so it is not considered 'nothing to do'
				}
				node._lastSelectIntent = flag;
				return this.nodeSetSelected(ctx, flag);
			},
			/** Remove all nodes.
			 * @param {EventData} ctx
			 */
			treeClear: function(ctx) {
				var tree = ctx.tree;
				tree.activeNode = null;
				tree.focusNode = null;
				tree.$div.find(">ul.fancytree-container").empty();
				// TODO: call destructors and remove reference loops
				tree.rootNode.children = null;
				tree._callHook("treeStructureChanged", ctx, "clear");
			},
			/** Widget was created (called only once, even it re-initialized).
			 * @param {EventData} ctx
			 */
			treeCreate: function(ctx) {},
			/** Widget was destroyed.
			 * @param {EventData} ctx
			 */
			treeDestroy: function(ctx) {
				this.$div.find(">ul.fancytree-container").remove();
				if (this.$source) {
					this.$source.removeClass("fancytree-helper-hidden");
				}
			},
			/** Widget was (re-)initialized.
			 * @param {EventData} ctx
			 */
			treeInit: function(ctx) {
				var tree = ctx.tree,
					opts = tree.options;

				//this.debug("Fancytree.treeInit()");
				// Add container to the TAB chain
				// See http://www.w3.org/TR/wai-aria-practices/#focus_activedescendant
				// #577: Allow to set tabindex to "0", "-1" and ""
				tree.$container.attr("tabindex", opts.tabindex);

				// Copy some attributes to tree.data
				$.each(TREE_ATTRS, function(i, attr) {
					if (opts[attr] !== undefined) {
						tree.info("Move option " + attr + " to tree");
						tree[attr] = opts[attr];
						delete opts[attr];
					}
				});

				if (opts.checkboxAutoHide) {
					tree.$container.addClass("fancytree-checkbox-auto-hide");
				}
				if (opts.rtl) {
					tree.$container
						.attr("DIR", "RTL")
						.addClass("fancytree-rtl");
				} else {
					tree.$container
						.removeAttr("DIR")
						.removeClass("fancytree-rtl");
				}
				if (opts.aria) {
					tree.$container.attr("role", "tree");
					if (opts.selectMode !== 1) {
						tree.$container.attr("aria-multiselectable", true);
					}
				}
				this.treeLoad(ctx);
			},
			/** Parse Fancytree from source, as configured in the options.
			 * @param {EventData} ctx
			 * @param {object} [source] optional new source (use last data otherwise)
			 */
			treeLoad: function(ctx, source) {
				var metaData,
					type,
					$ul,
					tree = ctx.tree,
					$container = ctx.widget.element,
					dfd,
					// calling context for root node
					rootCtx = $.extend({}, ctx, { node: this.rootNode });

				if (tree.rootNode.children) {
					this.treeClear(ctx);
				}
				source = source || this.options.source;

				if (!source) {
					type = $container.data("type") || "html";
					switch (type) {
						case "html":
							// There should be an embedded `<ul>` with initial nodes,
							// but another `<ul class='fancytree-container'>` is appended
							// to the tree's <div> on startup anyway.
							$ul = $container
								.find(">ul")
								.not(".fancytree-container")
								.first();

							if ($ul.length) {
								$ul.addClass(
									"ui-fancytree-source fancytree-helper-hidden"
								);
								source = $.ui.fancytree.parseHtml($ul);
								// allow to init tree.data.foo from <ul data-foo=''>
								this.data = $.extend(
									this.data,
									_getElementDataAsDict($ul)
								);
							} else {
								FT.warn(
									"No `source` option was passed and container does not contain `<ul>`: assuming `source: []`."
								);
								source = [];
							}
							break;
						case "json":
							source = $.parseJSON($container.text());
							// $container already contains the <ul>, but we remove the plain (json) text
							// $container.empty();
							$container
								.contents()
								.filter(function() {
									return this.nodeType === 3;
								})
								.remove();
							if ($.isPlainObject(source)) {
								// We got {foo: 'abc', children: [...]}
								_assert(
									$.isArray(source.children),
									"if an object is passed as source, it must contain a 'children' array (all other properties are added to 'tree.data')"
								);
								metaData = source;
								source = source.children;
								delete metaData.children;
								// Copy some attributes to tree.data
								$.each(TREE_ATTRS, function(i, attr) {
									if (metaData[attr] !== undefined) {
										tree[attr] = metaData[attr];
										delete metaData[attr];
									}
								});
								// Copy extra properties to tree.data.foo
								$.extend(tree.data, metaData);
							}
							break;
						default:
							$.error("Invalid data-type: " + type);
					}
				} else if (typeof source === "string") {
					// TODO: source is an element ID
					$.error("Not implemented");
				}

				// preInit is fired when the widget markup is created, but nodes
				// not yet loaded
				tree._triggerTreeEvent("preInit", null);

				// Trigger fancytreeinit after nodes have been loaded
				dfd = this.nodeLoadChildren(rootCtx, source)
					.done(function() {
						tree._callHook(
							"treeStructureChanged",
							ctx,
							"loadChildren"
						);
						tree.render();
						if (ctx.options.selectMode === 3) {
							tree.rootNode.fixSelection3FromEndNodes();
						}
						if (tree.activeNode && tree.options.activeVisible) {
							tree.activeNode.makeVisible();
						}
						tree._triggerTreeEvent("init", null, { status: true });
					})
					.fail(function() {
						tree.render();
						tree._triggerTreeEvent("init", null, { status: false });
					});
				return dfd;
			},
			/** Node was inserted into or removed from the tree.
			 * @param {EventData} ctx
			 * @param {boolean} add
			 * @param {FancytreeNode} node
			 */
			treeRegisterNode: function(ctx, add, node) {
				ctx.tree._callHook(
					"treeStructureChanged",
					ctx,
					add ? "addNode" : "removeNode"
				);
			},
			/** Widget got focus.
			 * @param {EventData} ctx
			 * @param {boolean} [flag=true]
			 */
			treeSetFocus: function(ctx, flag, callOpts) {
				var targetNode;

				flag = flag !== false;

				// this.debug("treeSetFocus(" + flag + "), callOpts: ", callOpts, this.hasFocus());
				// this.debug("    focusNode: " + this.focusNode);
				// this.debug("    activeNode: " + this.activeNode);
				if (flag !== this.hasFocus()) {
					this._hasFocus = flag;
					if (!flag && this.focusNode) {
						// Node also looses focus if widget blurs
						this.focusNode.setFocus(false);
					} else if (flag && (!callOpts || !callOpts.calledByNode)) {
						$(this.$container).focus();
					}
					this.$container.toggleClass("fancytree-treefocus", flag);
					this._triggerTreeEvent(flag ? "focusTree" : "blurTree");
					if (flag && !this.activeNode) {
						// #712: Use last mousedowned node ('click' event fires after focusin)
						targetNode =
							this._lastMousedownNode || this.getFirstChild();
						if (targetNode) {
							targetNode.setFocus();
						}
					}
				}
			},
			/** Widget option was set using `$().fancytree("option", "KEY", VALUE)`.
			 *
			 * Note: `key` may reference a nested option, e.g. 'dnd5.scroll'.
			 * In this case `value`contains the complete, modified `dnd5` option hash.
			 * We can check for changed values like
			 *     if( value.scroll !== tree.options.dnd5.scroll ) {...}
			 *
			 * @param {EventData} ctx
			 * @param {string} key option name
			 * @param {any} value option value
			 */
			treeSetOption: function(ctx, key, value) {
				var tree = ctx.tree,
					callDefault = true,
					callCreate = false,
					callRender = false;

				switch (key) {
					case "aria":
					case "checkbox":
					case "icon":
					case "minExpandLevel":
					case "tabindex":
						// tree._callHook("treeCreate", tree);
						callCreate = true;
						callRender = true;
						break;
					case "checkboxAutoHide":
						tree.$container.toggleClass(
							"fancytree-checkbox-auto-hide",
							!!value
						);
						break;
					case "escapeTitles":
					case "tooltip":
						callRender = true;
						break;
					case "rtl":
						if (value === false) {
							tree.$container
								.removeAttr("DIR")
								.removeClass("fancytree-rtl");
						} else {
							tree.$container
								.attr("DIR", "RTL")
								.addClass("fancytree-rtl");
						}
						callRender = true;
						break;
					case "source":
						callDefault = false;
						tree._callHook("treeLoad", tree, value);
						callRender = true;
						break;
				}
				tree.debug(
					"set option " +
						key +
						"=" +
						value +
						" <" +
						typeof value +
						">"
				);
				if (callDefault) {
					if (this.widget._super) {
						// jQuery UI 1.9+
						this.widget._super.call(this.widget, key, value);
					} else {
						// jQuery UI <= 1.8, we have to manually invoke the _setOption method from the base widget
						$.Widget.prototype._setOption.call(
							this.widget,
							key,
							value
						);
					}
				}
				if (callCreate) {
					tree._callHook("treeCreate", tree);
				}
				if (callRender) {
					tree.render(true, false); // force, not-deep
				}
			},
			/** A Node was added, removed, moved, or it's visibility changed.
			 * @param {EventData} ctx
			 */
			treeStructureChanged: function(ctx, type) {},
		}
	);

	/*******************************************************************************
	 * jQuery UI widget boilerplate
	 */

	/**
	 * The plugin (derrived from [jQuery.Widget](http://api.jqueryui.com/jQuery.widget/)).
	 *
	 * **Note:**
	 * These methods implement the standard jQuery UI widget API.
	 * It is recommended to use methods of the {Fancytree} instance instead
	 *
	 * @example
	 * // DEPRECATED: Access jQuery UI widget methods and members:
	 * var tree = $("#tree").fancytree("getTree", "#myTree");
	 * var node = $.ui.fancytree.getTree("#tree").getActiveNode();
	 *
	 * // RECOMMENDED: Use the Fancytree object API
	 * var tree = $.ui.fancytree.getTree("#myTree");
	 * var node = tree.getActiveNode();
	 *
	 * // or you may already have stored the tree instance upon creation:
	 * import {createTree, version} from 'jquery.fancytree'
	 * const tree = createTree('#tree', { ... });
	 * var node = tree.getActiveNode();
	 *
	 * @see {Fancytree_Static#getTree}
	 * @deprecated Use methods of the {Fancytree} instance instead
	 * @mixin Fancytree_Widget
	 */

	$.widget(
		"ui.fancytree",
		/** @lends Fancytree_Widget# */
		{
			/**These options will be used as defaults
			 * @type {FancytreeOptions}
			 */
			options: {
				activeVisible: true,
				ajax: {
					type: "GET",
					cache: false, // false: Append random '_' argument to the request url to prevent caching.
					// timeout: 0, // >0: Make sure we get an ajax error if server is unreachable
					dataType: "json", // Expect json format and pass json object to callbacks.
				},
				aria: true,
				autoActivate: true,
				autoCollapse: false,
				autoScroll: false,
				checkbox: false,
				clickFolderMode: 4,
				debugLevel: null, // 0..4 (null: use global setting $.ui.fancytree.debugLevel)
				disabled: false, // TODO: required anymore?
				enableAspx: true,
				escapeTitles: false,
				extensions: [],
				// fx: { height: "toggle", duration: 200 },
				// toggleEffect: { effect: "drop", options: {direction: "left"}, duration: 200 },
				// toggleEffect: { effect: "slide", options: {direction: "up"}, duration: 200 },
				//toggleEffect: { effect: "blind", options: {direction: "vertical", scale: "box"}, duration: 200 },
				toggleEffect: { effect: "slideToggle", duration: 200 }, //< "toggle" or "slideToggle" to use jQuery instead of jQueryUI for toggleEffect animation
				generateIds: false,
				icon: true,
				idPrefix: "ft_",
				focusOnSelect: false,
				keyboard: true,
				keyPathSeparator: "/",
				minExpandLevel: 1,
				nodata: true, // (bool, string, or callback) display message, when no data available
				quicksearch: false,
				rtl: false,
				scrollOfs: { top: 0, bottom: 0 },
				scrollParent: null,
				selectMode: 2,
				strings: {
					loading: "Loading...", // &#8230; would be escaped when escapeTitles is true
					loadError: "Load error!",
					moreData: "More...",
					noData: "No data.",
				},
				tabindex: "0",
				titlesTabbable: false,
				tooltip: false,
				treeId: null,
				_classNames: {
					node: "fancytree-node",
					folder: "fancytree-folder",
					animating: "fancytree-animating",
					combinedExpanderPrefix: "fancytree-exp-",
					combinedIconPrefix: "fancytree-ico-",
					hasChildren: "fancytree-has-children",
					active: "fancytree-active",
					selected: "fancytree-selected",
					expanded: "fancytree-expanded",
					lazy: "fancytree-lazy",
					focused: "fancytree-focused",
					partload: "fancytree-partload",
					partsel: "fancytree-partsel",
					radio: "fancytree-radio",
					// radiogroup: "fancytree-radiogroup",
					unselectable: "fancytree-unselectable",
					lastsib: "fancytree-lastsib",
					loading: "fancytree-loading",
					error: "fancytree-error",
					statusNodePrefix: "fancytree-statusnode-",
				},
				// events
				lazyLoad: null,
				postProcess: null,
			},
			_deprecationWarning: function(name) {
				var tree = this.tree;

				if (tree && tree.options.debugLevel >= 3) {
					tree.warn(
						"$().fancytree('" +
							name +
							"') is deprecated (see https://wwwendt.de/tech/fancytree/doc/jsdoc/Fancytree_Widget.html"
					);
				}
			},
			/* Set up the widget, Called on first $().fancytree() */
			_create: function() {
				this.tree = new Fancytree(this);

				this.$source =
					this.source || this.element.data("type") === "json"
						? this.element
						: this.element.find(">ul").first();
				// Subclass Fancytree instance with all enabled extensions
				var extension,
					extName,
					i,
					opts = this.options,
					extensions = opts.extensions,
					base = this.tree;

				for (i = 0; i < extensions.length; i++) {
					extName = extensions[i];
					extension = $.ui.fancytree._extensions[extName];
					if (!extension) {
						$.error(
							"Could not apply extension '" +
								extName +
								"' (it is not registered, did you forget to include it?)"
						);
					}
					// Add extension options as tree.options.EXTENSION
					// 	_assert(!this.tree.options[extName], "Extension name must not exist as option name: " + extName);

					// console.info("extend " + extName, extension.options, this.tree.options[extName])
					// issue #876: we want to replace custom array-options, not merge them
					this.tree.options[extName] = _simpleDeepMerge(
						{},
						extension.options,
						this.tree.options[extName]
					);
					// this.tree.options[extName] = $.extend(true, {}, extension.options, this.tree.options[extName]);

					// console.info("extend " + extName + " =>", this.tree.options[extName])
					// console.info("extend " + extName + " org default =>", extension.options)

					// Add a namespace tree.ext.EXTENSION, to hold instance data
					_assert(
						this.tree.ext[extName] === undefined,
						"Extension name must not exist as Fancytree.ext attribute: '" +
							extName +
							"'"
					);
					// this.tree[extName] = extension;
					this.tree.ext[extName] = {};
					// Subclass Fancytree methods using proxies.
					_subclassObject(this.tree, base, extension, extName);
					// current extension becomes base for the next extension
					base = extension;
				}
				//
				if (opts.icons !== undefined) {
					// 2015-11-16
					if (opts.icon === true) {
						this.tree.warn(
							"'icons' tree option is deprecated since v2.14.0: use 'icon' instead"
						);
						opts.icon = opts.icons;
					} else {
						$.error(
							"'icons' tree option is deprecated since v2.14.0: use 'icon' only instead"
						);
					}
				}
				if (opts.iconClass !== undefined) {
					// 2015-11-16
					if (opts.icon) {
						$.error(
							"'iconClass' tree option is deprecated since v2.14.0: use 'icon' only instead"
						);
					} else {
						this.tree.warn(
							"'iconClass' tree option is deprecated since v2.14.0: use 'icon' instead"
						);
						opts.icon = opts.iconClass;
					}
				}
				if (opts.tabbable !== undefined) {
					// 2016-04-04
					opts.tabindex = opts.tabbable ? "0" : "-1";
					this.tree.warn(
						"'tabbable' tree option is deprecated since v2.17.0: use 'tabindex='" +
							opts.tabindex +
							"' instead"
					);
				}
				//
				this.tree._callHook("treeCreate", this.tree);
				// Note: 'fancytreecreate' event is fired by widget base class
				//        this.tree._triggerTreeEvent("create");
			},

			/* Called on every $().fancytree() */
			_init: function() {
				this.tree._callHook("treeInit", this.tree);
				// TODO: currently we call bind after treeInit, because treeInit
				// might change tree.$container.
				// It would be better, to move event binding into hooks altogether
				this._bind();
			},

			/* Use the _setOption method to respond to changes to options. */
			_setOption: function(key, value) {
				return this.tree._callHook(
					"treeSetOption",
					this.tree,
					key,
					value
				);
			},

			/** Use the destroy method to clean up any modifications your widget has made to the DOM */
			_destroy: function() {
				this._unbind();
				this.tree._callHook("treeDestroy", this.tree);
				// In jQuery UI 1.8, you must invoke the destroy method from the base widget
				// $.Widget.prototype.destroy.call(this);
				// TODO: delete tree and nodes to make garbage collect easier?
				// TODO: In jQuery UI 1.9 and above, you would define _destroy instead of destroy and not call the base method
			},

			// -------------------------------------------------------------------------

			/* Remove all event handlers for our namespace */
			_unbind: function() {
				var ns = this.tree._ns;
				this.element.off(ns);
				this.tree.$container.off(ns);
				$(document).off(ns);
			},
			/* Add mouse and kyboard handlers to the container */
			_bind: function() {
				var self = this,
					opts = this.options,
					tree = this.tree,
					ns = tree._ns;
				// selstartEvent = ( $.support.selectstart ? "selectstart" : "mousedown" )

				// Remove all previuous handlers for this tree
				this._unbind();

				//alert("keydown" + ns + "foc=" + tree.hasFocus() + tree.$container);
				// tree.debug("bind events; container: ", tree.$container);
				tree.$container
					.on("focusin" + ns + " focusout" + ns, function(event) {
						var node = FT.getNode(event),
							flag = event.type === "focusin";

						if (!flag && node && $(event.target).is("a")) {
							// #764
							node.debug(
								"Ignored focusout on embedded <a> element."
							);
							return;
						}
						// tree.treeOnFocusInOut.call(tree, event);
						// tree.debug("Tree container got event " + event.type, node, event, FT.getEventTarget(event));
						if (flag) {
							if (tree._getExpiringValue("focusin")) {
								// #789: IE 11 may send duplicate focusin events
								tree.debug("Ignored double focusin.");
								return;
							}
							tree._setExpiringValue("focusin", true, 50);

							if (!node) {
								// #789: IE 11 may send focusin before mousdown(?)
								node = tree._getExpiringValue("mouseDownNode");
								if (node) {
									tree.debug(
										"Reconstruct mouse target for focusin from recent event."
									);
								}
							}
						}
						if (node) {
							// For example clicking into an <input> that is part of a node
							tree._callHook(
								"nodeSetFocus",
								tree._makeHookContext(node, event),
								flag
							);
						} else {
							if (
								tree.tbody &&
								$(event.target).parents(
									"table.fancytree-container > thead"
								).length
							) {
								// #767: ignore events in the table's header
								tree.debug(
									"Ignore focus event outside table body.",
									event
								);
							} else {
								tree._callHook("treeSetFocus", tree, flag);
							}
						}
					})
					.on("selectstart" + ns, "span.fancytree-title", function(
						event
					) {
						// prevent mouse-drags to select text ranges
						// tree.debug("<span title> got event " + event.type);
						event.preventDefault();
					})
					.on("keydown" + ns, function(event) {
						// TODO: also bind keyup and keypress
						// tree.debug("got event " + event.type + ", hasFocus:" + tree.hasFocus());
						// if(opts.disabled || opts.keyboard === false || !tree.hasFocus() ){
						if (opts.disabled || opts.keyboard === false) {
							return true;
						}
						var res,
							node = tree.focusNode, // node may be null
							ctx = tree._makeHookContext(node || tree, event),
							prevPhase = tree.phase;

						try {
							tree.phase = "userEvent";
							// If a 'fancytreekeydown' handler returns false, skip the default
							// handling (implemented by tree.nodeKeydown()).
							if (node) {
								res = tree._triggerNodeEvent(
									"keydown",
									node,
									event
								);
							} else {
								res = tree._triggerTreeEvent("keydown", event);
							}
							if (res === "preventNav") {
								res = true; // prevent keyboard navigation, but don't prevent default handling of embedded input controls
							} else if (res !== false) {
								res = tree._callHook("nodeKeydown", ctx);
							}
							return res;
						} finally {
							tree.phase = prevPhase;
						}
					})
					.on("mousedown" + ns, function(event) {
						var et = FT.getEventTarget(event);
						// self.tree.debug("event(" + event.type + "): node: ", et.node);
						// #712: Store the clicked node, so we can use it when we get a focusin event
						//       ('click' event fires after focusin)
						// tree.debug("event(" + event.type + "): node: ", et.node);
						tree._lastMousedownNode = et ? et.node : null;
						// #789: Store the node also for a short period, so we can use it
						// in a *resulting* focusin event
						tree._setExpiringValue(
							"mouseDownNode",
							tree._lastMousedownNode
						);
					})
					.on("click" + ns + " dblclick" + ns, function(event) {
						if (opts.disabled) {
							return true;
						}
						var ctx,
							et = FT.getEventTarget(event),
							node = et.node,
							tree = self.tree,
							prevPhase = tree.phase;

						// self.tree.debug("event(" + event.type + "): node: ", node);
						if (!node) {
							return true; // Allow bubbling of other events
						}
						ctx = tree._makeHookContext(node, event);
						// self.tree.debug("event(" + event.type + "): node: ", node);
						try {
							tree.phase = "userEvent";
							switch (event.type) {
								case "click":
									ctx.targetType = et.type;
									if (node.isPagingNode()) {
										return (
											tree._triggerNodeEvent(
												"clickPaging",
												ctx,
												event
											) === true
										);
									}
									return tree._triggerNodeEvent(
										"click",
										ctx,
										event
									) === false
										? false
										: tree._callHook("nodeClick", ctx);
								case "dblclick":
									ctx.targetType = et.type;
									return tree._triggerNodeEvent(
										"dblclick",
										ctx,
										event
									) === false
										? false
										: tree._callHook("nodeDblclick", ctx);
							}
						} finally {
							tree.phase = prevPhase;
						}
					});
			},
			/** Return the active node or null.
			 * @returns {FancytreeNode}
			 * @deprecated Use methods of the Fancytree instance instead (<a href="Fancytree_Widget.html">example above</a>).
			 */
			getActiveNode: function() {
				this._deprecationWarning("getActiveNode");
				return this.tree.activeNode;
			},
			/** Return the matching node or null.
			 * @param {string} key
			 * @returns {FancytreeNode}
			 * @deprecated Use methods of the Fancytree instance instead (<a href="Fancytree_Widget.html">example above</a>).
			 */
			getNodeByKey: function(key) {
				this._deprecationWarning("getNodeByKey");
				return this.tree.getNodeByKey(key);
			},
			/** Return the invisible system root node.
			 * @returns {FancytreeNode}
			 * @deprecated Use methods of the Fancytree instance instead (<a href="Fancytree_Widget.html">example above</a>).
			 */
			getRootNode: function() {
				this._deprecationWarning("getRootNode");
				return this.tree.rootNode;
			},
			/** Return the current tree instance.
			 * @returns {Fancytree}
			 * @deprecated Use `$.ui.fancytree.getTree()` instead (<a href="Fancytree_Widget.html">example above</a>).
			 */
			getTree: function() {
				this._deprecationWarning("getTree");
				return this.tree;
			},
		}
	);

	// $.ui.fancytree was created by the widget factory. Create a local shortcut:
	FT = $.ui.fancytree;

	/**
	 * Static members in the `$.ui.fancytree` namespace.
	 * This properties and methods can be accessed without instantiating a concrete
	 * Fancytree instance.
	 *
	 * @example
	 * // Access static members:
	 * var node = $.ui.fancytree.getNode(element);
	 * alert($.ui.fancytree.version);
	 *
	 * @mixin Fancytree_Static
	 */
	$.extend(
		$.ui.fancytree,
		/** @lends Fancytree_Static# */
		{
			/** Version number `"MAJOR.MINOR.PATCH"`
			 * @type {string} */
			version: "2.34.0", // Set to semver by 'grunt release'
			/** @type {string}
			 * @description `"production" for release builds` */
			buildType: "production", // Set to 'production' by 'grunt build'
			/** @type {int}
			 * @description 0: silent .. 5: verbose (default: 3 for release builds). */
			debugLevel: 3, // Set to 3 by 'grunt build'
			// Used by $.ui.fancytree.debug() and as default for tree.options.debugLevel

			_nextId: 1,
			_nextNodeKey: 1,
			_extensions: {},
			// focusTree: null,

			/** Expose class object as `$.ui.fancytree._FancytreeClass`.
			 * Useful to extend `$.ui.fancytree._FancytreeClass.prototype`.
			 * @type {Fancytree}
			 */
			_FancytreeClass: Fancytree,
			/** Expose class object as $.ui.fancytree._FancytreeNodeClass
			 * Useful to extend `$.ui.fancytree._FancytreeNodeClass.prototype`.
			 * @type {FancytreeNode}
			 */
			_FancytreeNodeClass: FancytreeNode,
			/* Feature checks to provide backwards compatibility */
			jquerySupports: {
				// http://jqueryui.com/upgrade-guide/1.9/#deprecated-offset-option-merged-into-my-and-at
				positionMyOfs: isVersionAtLeast($.ui.version, 1, 9),
			},
			/** Throw an error if condition fails (debug method).
			 * @param {boolean} cond
			 * @param {string} msg
			 */
			assert: function(cond, msg) {
				return _assert(cond, msg);
			},
			/** Create a new Fancytree instance on a target element.
			 *
			 * @param {Element | jQueryObject | string} el Target DOM element or selector
			 * @param {FancytreeOptions} [opts] Fancytree options
			 * @returns {Fancytree} new tree instance
			 * @example
			 * var tree = $.ui.fancytree.createTree("#tree", {
			 *     source: {url: "my/webservice"}
			 * }); // Create tree for this matching element
			 *
			 * @since 2.25
			 */
			createTree: function(el, opts) {
				var $tree = $(el).fancytree(opts);
				return FT.getTree($tree);
			},
			/** Return a function that executes *fn* at most every *timeout* ms.
			 * @param {integer} timeout
			 * @param {function} fn
			 * @param {boolean} [invokeAsap=false]
			 * @param {any} [ctx]
			 */
			debounce: function(timeout, fn, invokeAsap, ctx) {
				var timer;
				if (arguments.length === 3 && typeof invokeAsap !== "boolean") {
					ctx = invokeAsap;
					invokeAsap = false;
				}
				return function() {
					var args = arguments;
					ctx = ctx || this;
					// eslint-disable-next-line no-unused-expressions
					invokeAsap && !timer && fn.apply(ctx, args);
					clearTimeout(timer);
					timer = setTimeout(function() {
						// eslint-disable-next-line no-unused-expressions
						invokeAsap || fn.apply(ctx, args);
						timer = null;
					}, timeout);
				};
			},
			/** Write message to console if debugLevel >= 4
			 * @param {string} msg
			 */
			debug: function(msg) {
				if ($.ui.fancytree.debugLevel >= 4) {
					consoleApply("log", arguments);
				}
			},
			/** Write error message to console if debugLevel >= 1.
			 * @param {string} msg
			 */
			error: function(msg) {
				if ($.ui.fancytree.debugLevel >= 1) {
					consoleApply("error", arguments);
				}
			},
			/** Convert `<`, `>`, `&`, `"`, `'`, and `/` to the equivalent entities.
			 *
			 * @param {string} s
			 * @returns {string}
			 */
			escapeHtml: function(s) {
				return ("" + s).replace(REX_HTML, function(s) {
					return ENTITY_MAP[s];
				});
			},
			/** Make jQuery.position() arguments backwards compatible, i.e. if
			 * jQuery UI version <= 1.8, convert
			 *   { my: "left+3 center", at: "left bottom", of: $target }
			 * to
			 *   { my: "left center", at: "left bottom", of: $target, offset: "3  0" }
			 *
			 * See http://jqueryui.com/upgrade-guide/1.9/#deprecated-offset-option-merged-into-my-and-at
			 * and http://jsfiddle.net/mar10/6xtu9a4e/
			 *
			 * @param {object} opts
			 * @returns {object} the (potentially modified) original opts hash object
			 */
			fixPositionOptions: function(opts) {
				if (opts.offset || ("" + opts.my + opts.at).indexOf("%") >= 0) {
					$.error(
						"expected new position syntax (but '%' is not supported)"
					);
				}
				if (!$.ui.fancytree.jquerySupports.positionMyOfs) {
					var // parse 'left+3 center' into ['left+3 center', 'left', '+3', 'center', undefined]
						myParts = /(\w+)([+-]?\d+)?\s+(\w+)([+-]?\d+)?/.exec(
							opts.my
						),
						atParts = /(\w+)([+-]?\d+)?\s+(\w+)([+-]?\d+)?/.exec(
							opts.at
						),
						// convert to numbers
						dx =
							(myParts[2] ? +myParts[2] : 0) +
							(atParts[2] ? +atParts[2] : 0),
						dy =
							(myParts[4] ? +myParts[4] : 0) +
							(atParts[4] ? +atParts[4] : 0);

					opts = $.extend({}, opts, {
						// make a copy and overwrite
						my: myParts[1] + " " + myParts[3],
						at: atParts[1] + " " + atParts[3],
					});
					if (dx || dy) {
						opts.offset = "" + dx + " " + dy;
					}
				}
				return opts;
			},
			/** Return a {node: FancytreeNode, type: TYPE} object for a mouse event.
			 *
			 * @param {Event} event Mouse event, e.g. click, ...
			 * @returns {object} Return a {node: FancytreeNode, type: TYPE} object
			 *     TYPE: 'title' | 'prefix' | 'expander' | 'checkbox' | 'icon' | undefined
			 */
			getEventTarget: function(event) {
				var $target,
					tree,
					tcn = event && event.target ? event.target.className : "",
					res = { node: this.getNode(event.target), type: undefined };
				// We use a fast version of $(res.node).hasClass()
				// See http://jsperf.com/test-for-classname/2
				if (/\bfancytree-title\b/.test(tcn)) {
					res.type = "title";
				} else if (/\bfancytree-expander\b/.test(tcn)) {
					res.type =
						res.node.hasChildren() === false
							? "prefix"
							: "expander";
					// }else if( /\bfancytree-checkbox\b/.test(tcn) || /\bfancytree-radio\b/.test(tcn) ){
				} else if (/\bfancytree-checkbox\b/.test(tcn)) {
					res.type = "checkbox";
				} else if (/\bfancytree(-custom)?-icon\b/.test(tcn)) {
					res.type = "icon";
				} else if (/\bfancytree-node\b/.test(tcn)) {
					// Somewhere near the title
					res.type = "title";
				} else if (event && event.target) {
					$target = $(event.target);
					if ($target.is("ul[role=group]")) {
						// #nnn: Clicking right to a node may hit the surrounding UL
						tree = res.node && res.node.tree;
						(tree || FT).debug("Ignoring click on outer UL.");
						res.node = null;
					} else if ($target.closest(".fancytree-title").length) {
						// #228: clicking an embedded element inside a title
						res.type = "title";
					} else if ($target.closest(".fancytree-checkbox").length) {
						// E.g. <svg> inside checkbox span
						res.type = "checkbox";
					} else if ($target.closest(".fancytree-expander").length) {
						res.type = "expander";
					}
				}
				return res;
			},
			/** Return a string describing the affected node region for a mouse event.
			 *
			 * @param {Event} event Mouse event, e.g. click, mousemove, ...
			 * @returns {string} 'title' | 'prefix' | 'expander' | 'checkbox' | 'icon' | undefined
			 */
			getEventTargetType: function(event) {
				return this.getEventTarget(event).type;
			},
			/** Return a FancytreeNode instance from element, event, or jQuery object.
			 *
			 * @param {Element | jQueryObject | Event} el
			 * @returns {FancytreeNode} matching node or null
			 */
			getNode: function(el) {
				if (el instanceof FancytreeNode) {
					return el; // el already was a FancytreeNode
				} else if (el instanceof $) {
					el = el[0]; // el was a jQuery object: use the DOM element
				} else if (el.originalEvent !== undefined) {
					el = el.target; // el was an Event
				}
				while (el) {
					if (el.ftnode) {
						return el.ftnode;
					}
					el = el.parentNode;
				}
				return null;
			},
			/** Return a Fancytree instance, from element, index, event, or jQueryObject.
			 *
			 * @param {Element | jQueryObject | Event | integer | string} [el]
			 * @returns {Fancytree} matching tree or null
			 * @example
			 * $.ui.fancytree.getTree();  // Get first Fancytree instance on page
			 * $.ui.fancytree.getTree(1);  // Get second Fancytree instance on page
			 * $.ui.fancytree.getTree(event);  // Get tree for this mouse- or keyboard event
			 * $.ui.fancytree.getTree("foo");  // Get tree for this `opts.treeId`
			 * $.ui.fancytree.getTree("#tree");  // Get tree for this matching element
			 *
			 * @since 2.13
			 */
			getTree: function(el) {
				var widget,
					orgEl = el;

				if (el instanceof Fancytree) {
					return el; // el already was a Fancytree
				}
				if (el === undefined) {
					el = 0; // get first tree
				}
				if (typeof el === "number") {
					el = $(".fancytree-container").eq(el); // el was an integer: return nth instance
				} else if (typeof el === "string") {
					// `el` may be a treeId or a selector:
					el = $("#ft-id-" + orgEl).eq(0);
					if (!el.length) {
						el = $(orgEl).eq(0); // el was a selector: use first match
					}
				} else if (
					el instanceof Element ||
					el instanceof HTMLDocument
				) {
					el = $(el);
				} else if (el instanceof $) {
					el = el.eq(0); // el was a jQuery object: use the first
				} else if (el.originalEvent !== undefined) {
					el = $(el.target); // el was an Event
				}
				// el is a jQuery object wit one element here
				el = el.closest(":ui-fancytree");
				widget = el.data("ui-fancytree") || el.data("fancytree"); // the latter is required by jQuery <= 1.8
				return widget ? widget.tree : null;
			},
			/** Return an option value that has a default, but may be overridden by a
			 * callback or a node instance attribute.
			 *
			 * Evaluation sequence:
			 *
			 * If `tree.options.<optionName>` is a callback that returns something, use that.
			 * Else if `node.<optionName>` is defined, use that.
			 * Else if `tree.options.<optionName>` is a value, use that.
			 * Else use `defaultValue`.
			 *
			 * @param {string} optionName name of the option property (on node and tree)
			 * @param {FancytreeNode} node passed to the callback
			 * @param {object} nodeObject where to look for the local option property, e.g. `node` or `node.data`
			 * @param {object} treeOption where to look for the tree option, e.g. `tree.options` or `tree.options.dnd5`
			 * @param {any} [defaultValue]
			 * @returns {any}
			 *
			 * @example
			 * // Check for node.foo, tree,options.foo(), and tree.options.foo:
			 * $.ui.fancytree.evalOption("foo", node, node, tree.options);
			 * // Check for node.data.bar, tree,options.qux.bar(), and tree.options.qux.bar:
			 * $.ui.fancytree.evalOption("bar", node, node.data, tree.options.qux);
			 *
			 * @since 2.22
			 */
			evalOption: function(
				optionName,
				node,
				nodeObject,
				treeOptions,
				defaultValue
			) {
				var ctx,
					res,
					tree = node.tree,
					treeOpt = treeOptions[optionName],
					nodeOpt = nodeObject[optionName];

				if ($.isFunction(treeOpt)) {
					ctx = {
						node: node,
						tree: tree,
						widget: tree.widget,
						options: tree.widget.options,
						typeInfo: tree.types[node.type] || {},
					};
					res = treeOpt.call(tree, { type: optionName }, ctx);
					if (res == null) {
						res = nodeOpt;
					}
				} else {
					res = nodeOpt == null ? treeOpt : nodeOpt;
				}
				if (res == null) {
					res = defaultValue; // no option set at all: return default
				}
				return res;
			},
			/** Set expander, checkbox, or node icon, supporting string and object format.
			 *
			 * @param {Element | jQueryObject} span
			 * @param {string} baseClass
			 * @param {string | object} icon
			 * @since 2.27
			 */
			setSpanIcon: function(span, baseClass, icon) {
				var $span = $(span);

				if (typeof icon === "string") {
					$span.attr("class", baseClass + " " + icon);
				} else {
					// support object syntax: { text: ligature, addClasse: classname }
					if (icon.text) {
						$span.text("" + icon.text);
					} else if (icon.html) {
						span.innerHTML = icon.html;
					}
					$span.attr(
						"class",
						baseClass + " " + (icon.addClass || "")
					);
				}
			},
			/** Convert a keydown or mouse event to a canonical string like 'ctrl+a',
			 * 'ctrl+shift+f2', 'shift+leftdblclick'.
			 *
			 * This is especially handy for switch-statements in event handlers.
			 *
			 * @param {event}
			 * @returns {string}
			 *
			 * @example

			switch( $.ui.fancytree.eventToString(event) ) {
				case "-":
					tree.nodeSetExpanded(ctx, false);
					break;
				case "shift+return":
					tree.nodeSetActive(ctx, true);
					break;
				case "down":
					res = node.navigate(event.which, activate);
					break;
				default:
					handled = false;
			}
			if( handled ){
				event.preventDefault();
			}
			*/
			eventToString: function(event) {
				// Poor-man's hotkeys. See here for a complete implementation:
				//   https://github.com/jeresig/jquery.hotkeys
				var which = event.which,
					et = event.type,
					s = [];

				if (event.altKey) {
					s.push("alt");
				}
				if (event.ctrlKey) {
					s.push("ctrl");
				}
				if (event.metaKey) {
					s.push("meta");
				}
				if (event.shiftKey) {
					s.push("shift");
				}

				if (et === "click" || et === "dblclick") {
					s.push(MOUSE_BUTTONS[event.button] + et);
				} else if (et === "wheel") {
					s.push(et);
				} else if (!IGNORE_KEYCODES[which]) {
					s.push(
						SPECIAL_KEYCODES[which] ||
							String.fromCharCode(which).toLowerCase()
					);
				}
				return s.join("+");
			},
			/** Write message to console if debugLevel >= 3
			 * @param {string} msg
			 */
			info: function(msg) {
				if ($.ui.fancytree.debugLevel >= 3) {
					consoleApply("info", arguments);
				}
			},
			/* @deprecated: use eventToString(event) instead.
			 */
			keyEventToString: function(event) {
				this.warn(
					"keyEventToString() is deprecated: use eventToString()"
				);
				return this.eventToString(event);
			},
			/** Return a wrapped handler method, that provides `this._super`.
			 *
			 * @example
				// Implement `opts.createNode` event to add the 'draggable' attribute
				$.ui.fancytree.overrideMethod(ctx.options, "createNode", function(event, data) {
					// Default processing if any
					this._super.apply(this, arguments);
					// Add 'draggable' attribute
					data.node.span.draggable = true;
				});
			 *
			 * @param {object} instance
			 * @param {string} methodName
			 * @param {function} handler
			 * @param {object} [context] optional context
			 */
			overrideMethod: function(instance, methodName, handler, context) {
				var prevSuper,
					_super = instance[methodName] || $.noop;

				instance[methodName] = function() {
					var self = context || this;

					try {
						prevSuper = self._super;
						self._super = _super;
						return handler.apply(self, arguments);
					} finally {
						self._super = prevSuper;
					}
				};
			},
			/**
			 * Parse tree data from HTML <ul> markup
			 *
			 * @param {jQueryObject} $ul
			 * @returns {NodeData[]}
			 */
			parseHtml: function($ul) {
				var classes,
					className,
					extraClasses,
					i,
					iPos,
					l,
					tmp,
					tmp2,
					$children = $ul.find(">li"),
					children = [];

				$children.each(function() {
					var allData,
						lowerCaseAttr,
						$li = $(this),
						$liSpan = $li.find(">span", this).first(),
						$liA = $liSpan.length ? null : $li.find(">a").first(),
						d = { tooltip: null, data: {} };

					if ($liSpan.length) {
						d.title = $liSpan.html();
					} else if ($liA && $liA.length) {
						// If a <li><a> tag is specified, use it literally and extract href/target.
						d.title = $liA.html();
						d.data.href = $liA.attr("href");
						d.data.target = $liA.attr("target");
						d.tooltip = $liA.attr("title");
					} else {
						// If only a <li> tag is specified, use the trimmed string up to
						// the next child <ul> tag.
						d.title = $li.html();
						iPos = d.title.search(/<ul/i);
						if (iPos >= 0) {
							d.title = d.title.substring(0, iPos);
						}
					}
					d.title = $.trim(d.title);

					// Make sure all fields exist
					for (i = 0, l = CLASS_ATTRS.length; i < l; i++) {
						d[CLASS_ATTRS[i]] = undefined;
					}
					// Initialize to `true`, if class is set and collect extraClasses
					classes = this.className.split(" ");
					extraClasses = [];
					for (i = 0, l = classes.length; i < l; i++) {
						className = classes[i];
						if (CLASS_ATTR_MAP[className]) {
							d[className] = true;
						} else {
							extraClasses.push(className);
						}
					}
					d.extraClasses = extraClasses.join(" ");

					// Parse node options from ID, title and class attributes
					tmp = $li.attr("title");
					if (tmp) {
						d.tooltip = tmp; // overrides <a title='...'>
					}
					tmp = $li.attr("id");
					if (tmp) {
						d.key = tmp;
					}
					// Translate hideCheckbox -> checkbox:false
					if ($li.attr("hideCheckbox")) {
						d.checkbox = false;
					}
					// Add <li data-NAME='...'> as node.data.NAME
					allData = _getElementDataAsDict($li);
					if (allData && !$.isEmptyObject(allData)) {
						// #507: convert data-hidecheckbox (lower case) to hideCheckbox
						for (lowerCaseAttr in NODE_ATTR_LOWERCASE_MAP) {
							if (allData.hasOwnProperty(lowerCaseAttr)) {
								allData[
									NODE_ATTR_LOWERCASE_MAP[lowerCaseAttr]
								] = allData[lowerCaseAttr];
								delete allData[lowerCaseAttr];
							}
						}
						// #56: Allow to set special node.attributes from data-...
						for (i = 0, l = NODE_ATTRS.length; i < l; i++) {
							tmp = NODE_ATTRS[i];
							tmp2 = allData[tmp];
							if (tmp2 != null) {
								delete allData[tmp];
								d[tmp] = tmp2;
							}
						}
						// All other data-... goes to node.data...
						$.extend(d.data, allData);
					}
					// Recursive reading of child nodes, if LI tag contains an UL tag
					$ul = $li.find(">ul").first();
					if ($ul.length) {
						d.children = $.ui.fancytree.parseHtml($ul);
					} else {
						d.children = d.lazy ? undefined : null;
					}
					children.push(d);
					// FT.debug("parse ", d, children);
				});
				return children;
			},
			/** Add Fancytree extension definition to the list of globally available extensions.
			 *
			 * @param {object} definition
			 */
			registerExtension: function(definition) {
				_assert(
					definition.name != null,
					"extensions must have a `name` property."
				);
				_assert(
					definition.version != null,
					"extensions must have a `version` property."
				);
				$.ui.fancytree._extensions[definition.name] = definition;
			},
			/** Inverse of escapeHtml().
			 *
			 * @param {string} s
			 * @returns {string}
			 */
			unescapeHtml: function(s) {
				var e = document.createElement("div");
				e.innerHTML = s;
				return e.childNodes.length === 0
					? ""
					: e.childNodes[0].nodeValue;
			},
			/** Write warning message to console if debugLevel >= 2.
			 * @param {string} msg
			 */
			warn: function(msg) {
				if ($.ui.fancytree.debugLevel >= 2) {
					consoleApply("warn", arguments);
				}
			},
		}
	);

	// Value returned by `require('jquery.fancytree')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.childcounter.js' */// Extending Fancytree
// ===================
//
// See also the [live demo](https://wwWendt.de/tech/fancytree/demo/sample-ext-childcounter.html) of this code.
//
// Every extension should have a comment header containing some information
// about the author, copyright and licensing. Also a pointer to the latest
// source code.
// Prefix with `/*!` so the comment is not removed by the minifier.

/*!
 * jquery.fancytree.childcounter.js
 *
 * Add a child counter bubble to tree nodes.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

// To keep the global namespace clean, we wrap everything in a closure.
// The UMD wrapper pattern defines the dependencies on jQuery and the
// Fancytree core module, and makes sure that we can use the `require()`
// syntax with package loaders.

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	// Consider to use [strict mode](http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/)
	"use strict";

	// The [coding guidelines](http://contribute.jquery.org/style-guide/js/)
	// require jshint /eslint compliance.
	// But for this sample, we want to allow unused variables for demonstration purpose.

	/*eslint-disable no-unused-vars */

	// Adding methods
	// --------------

	// New member functions can be added to the `Fancytree` class.
	// This function will be available for every tree instance:
	//
	//     var tree = $.ui.fancytree.getTree("#tree");
	//     tree.countSelected(false);

	$.ui.fancytree._FancytreeClass.prototype.countSelected = function(topOnly) {
		var tree = this,
			treeOptions = tree.options;

		return tree.getSelectedNodes(topOnly).length;
	};

	// The `FancytreeNode` class can also be easily extended. This would be called
	// like
	//     node.updateCounters();
	//
	// It is also good practice to add a docstring comment.
	/**
	 * [ext-childcounter] Update counter badges for `node` and its parents.
	 * May be called in the `loadChildren` event, to update parents of lazy loaded
	 * nodes.
	 * @alias FancytreeNode#updateCounters
	 * @requires jquery.fancytree.childcounters.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.updateCounters = function() {
		var node = this,
			$badge = $("span.fancytree-childcounter", node.span),
			extOpts = node.tree.options.childcounter,
			count = node.countChildren(extOpts.deep);

		node.data.childCounter = count;
		if (
			(count || !extOpts.hideZeros) &&
			(!node.isExpanded() || !extOpts.hideExpanded)
		) {
			if (!$badge.length) {
				$badge = $("<span class='fancytree-childcounter'/>").appendTo(
					$(
						"span.fancytree-icon,span.fancytree-custom-icon",
						node.span
					)
				);
			}
			$badge.text(count);
		} else {
			$badge.remove();
		}
		if (extOpts.deep && !node.isTopLevel() && !node.isRoot()) {
			node.parent.updateCounters();
		}
	};

	// Finally, we can extend the widget API and create functions that are called
	// like so:
	//
	//     $("#tree").fancytree("widgetMethod1", "abc");

	$.ui.fancytree.prototype.widgetMethod1 = function(arg1) {
		var tree = this.tree;
		return arg1;
	};

	// Register a Fancytree extension
	// ------------------------------
	// A full blown extension, extension is available for all trees and can be
	// enabled like so (see also the [live demo](https://wwWendt.de/tech/fancytree/demo/sample-ext-childcounter.html)):
	//
	//    <script src="../src/jquery.fancytree.js"></script>
	//    <script src="../src/jquery.fancytree.childcounter.js"></script>
	//    ...
	//
	//     $("#tree").fancytree({
	//         extensions: ["childcounter"],
	//         childcounter: {
	//             hideExpanded: true
	//         },
	//         ...
	//     });
	//

	/* 'childcounter' extension */
	$.ui.fancytree.registerExtension({
		// Every extension must be registered by a unique name.
		name: "childcounter",
		// Version information should be compliant with [semver](http://semver.org)
		version: "2.34.0",

		// Extension specific options and their defaults.
		// This options will be available as `tree.options.childcounter.hideExpanded`

		options: {
			deep: true,
			hideZeros: true,
			hideExpanded: false,
		},

		// Attributes other than `options` (or functions) can be defined here, and
		// will be added to the tree.ext.EXTNAME namespace, in this case `tree.ext.childcounter.foo`.
		// They can also be accessed as `this._local.foo` from within the extension
		// methods.
		foo: 42,

		// Local functions are prefixed with an underscore '_'.
		// Callable as `this._local._appendCounter()`.

		_appendCounter: function(bar) {
			var tree = this;
		},

		// **Override virtual methods for this extension.**
		//
		// Fancytree implements a number of 'hook methods', prefixed by 'node...' or 'tree...'.
		// with a `ctx` argument (see [EventData](https://wwWendt.de/tech/fancytree/doc/jsdoc/global.html#EventData)
		// for details) and an extended calling context:<br>
		// `this`       : the Fancytree instance<br>
		// `this._local`: the namespace that contains extension attributes and private methods (same as this.ext.EXTNAME)<br>
		// `this._super`: the virtual function that was overridden (member of previous extension or Fancytree)
		//
		// See also the [complete list of available hook functions](https://wwWendt.de/tech/fancytree/doc/jsdoc/Fancytree_Hooks.html).

		/* Init */
		// `treeInit` is triggered when a tree is initalized. We can set up classes or
		// bind event handlers here...
		treeInit: function(ctx) {
			var tree = this, // same as ctx.tree,
				opts = ctx.options,
				extOpts = ctx.options.childcounter;
			// Optionally check for dependencies with other extensions
			/* this._requireExtension("glyph", false, false); */
			// Call the base implementation
			this._superApply(arguments);
			// Add a class to the tree container
			this.$container.addClass("fancytree-ext-childcounter");
		},

		// Destroy this tree instance (we only call the default implementation, so
		// this method could as well be omitted).

		treeDestroy: function(ctx) {
			this._superApply(arguments);
		},

		// Overload the `renderTitle` hook, to append a counter badge
		nodeRenderTitle: function(ctx, title) {
			var node = ctx.node,
				extOpts = ctx.options.childcounter,
				count =
					node.data.childCounter == null
						? node.countChildren(extOpts.deep)
						: +node.data.childCounter;
			// Let the base implementation render the title
			// We use `_super()` instead of `_superApply()` here, since it is a little bit
			// more performant when called often
			this._super(ctx, title);
			// Append a counter badge
			if (
				(count || !extOpts.hideZeros) &&
				(!node.isExpanded() || !extOpts.hideExpanded)
			) {
				$(
					"span.fancytree-icon,span.fancytree-custom-icon",
					node.span
				).append(
					$("<span class='fancytree-childcounter'/>").text(count)
				);
			}
		},
		// Overload the `setExpanded` hook, so the counters are updated
		nodeSetExpanded: function(ctx, flag, callOpts) {
			var tree = ctx.tree,
				node = ctx.node;
			// Let the base implementation expand/collapse the node, then redraw the title
			// after the animation has finished
			return this._superApply(arguments).always(function() {
				tree.nodeRenderTitle(ctx);
			});
		},

		// End of extension definition
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.clones.js' *//*!
 *
 * jquery.fancytree.clones.js
 * Support faster lookup of nodes by key and shared ref-ids.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Private functions and variables
	 */
	function _assert(cond, msg) {
		// TODO: see qunit.js extractStacktrace()
		if (!cond) {
			msg = msg ? ": " + msg : "";
			$.error("Assertion failed" + msg);
		}
	}

	/* Return first occurrence of member from array. */
	function _removeArrayMember(arr, elem) {
		// TODO: use Array.indexOf for IE >= 9
		var i;
		for (i = arr.length - 1; i >= 0; i--) {
			if (arr[i] === elem) {
				arr.splice(i, 1);
				return true;
			}
		}
		return false;
	}

	/**
	 * JS Implementation of MurmurHash3 (r136) (as of May 20, 2011)
	 *
	 * @author <a href="mailto:gary.court@gmail.com">Gary Court</a>
	 * @see http://github.com/garycourt/murmurhash-js
	 * @author <a href="mailto:aappleby@gmail.com">Austin Appleby</a>
	 * @see http://sites.google.com/site/murmurhash/
	 *
	 * @param {string} key ASCII only
	 * @param {boolean} [asString=false]
	 * @param {number} seed Positive integer only
	 * @return {number} 32-bit positive integer hash
	 */
	function hashMurmur3(key, asString, seed) {
		/*eslint-disable no-bitwise */
		var h1b,
			k1,
			remainder = key.length & 3,
			bytes = key.length - remainder,
			h1 = seed,
			c1 = 0xcc9e2d51,
			c2 = 0x1b873593,
			i = 0;

		while (i < bytes) {
			k1 =
				(key.charCodeAt(i) & 0xff) |
				((key.charCodeAt(++i) & 0xff) << 8) |
				((key.charCodeAt(++i) & 0xff) << 16) |
				((key.charCodeAt(++i) & 0xff) << 24);
			++i;

			k1 =
				((k1 & 0xffff) * c1 + ((((k1 >>> 16) * c1) & 0xffff) << 16)) &
				0xffffffff;
			k1 = (k1 << 15) | (k1 >>> 17);
			k1 =
				((k1 & 0xffff) * c2 + ((((k1 >>> 16) * c2) & 0xffff) << 16)) &
				0xffffffff;

			h1 ^= k1;
			h1 = (h1 << 13) | (h1 >>> 19);
			h1b =
				((h1 & 0xffff) * 5 + ((((h1 >>> 16) * 5) & 0xffff) << 16)) &
				0xffffffff;
			h1 =
				(h1b & 0xffff) +
				0x6b64 +
				((((h1b >>> 16) + 0xe654) & 0xffff) << 16);
		}

		k1 = 0;

		switch (remainder) {
			case 3:
				k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
			// fall through
			case 2:
				k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
			// fall through
			case 1:
				k1 ^= key.charCodeAt(i) & 0xff;

				k1 =
					((k1 & 0xffff) * c1 +
						((((k1 >>> 16) * c1) & 0xffff) << 16)) &
					0xffffffff;
				k1 = (k1 << 15) | (k1 >>> 17);
				k1 =
					((k1 & 0xffff) * c2 +
						((((k1 >>> 16) * c2) & 0xffff) << 16)) &
					0xffffffff;
				h1 ^= k1;
		}

		h1 ^= key.length;

		h1 ^= h1 >>> 16;
		h1 =
			((h1 & 0xffff) * 0x85ebca6b +
				((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) &
			0xffffffff;
		h1 ^= h1 >>> 13;
		h1 =
			((h1 & 0xffff) * 0xc2b2ae35 +
				((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16)) &
			0xffffffff;
		h1 ^= h1 >>> 16;

		if (asString) {
			// Convert to 8 digit hex string
			return ("0000000" + (h1 >>> 0).toString(16)).substr(-8);
		}
		return h1 >>> 0;
		/*eslint-enable no-bitwise */
	}

	/*
	 * Return a unique key for node by calculating the hash of the parents refKey-list.
	 */
	function calcUniqueKey(node) {
		var key,
			h1,
			path = $.map(node.getParentList(false, true), function(e) {
				return e.refKey || e.key;
			});

		path = path.join("/");
		// 32-bit has a high probability of collisions, so we pump up to 64-bit
		// https://security.stackexchange.com/q/209882/207588

		h1 = hashMurmur3(path, true);
		key = "id_" + h1 + hashMurmur3(h1 + path, true);

		return key;
	}

	/**
	 * [ext-clones] Return a list of clone-nodes (i.e. same refKey) or null.
	 * @param {boolean} [includeSelf=false]
	 * @returns {FancytreeNode[] | null}
	 *
	 * @alias FancytreeNode#getCloneList
	 * @requires jquery.fancytree.clones.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.getCloneList = function(
		includeSelf
	) {
		var key,
			tree = this.tree,
			refList = tree.refMap[this.refKey] || null,
			keyMap = tree.keyMap;

		if (refList) {
			key = this.key;
			// Convert key list to node list
			if (includeSelf) {
				refList = $.map(refList, function(val) {
					return keyMap[val];
				});
			} else {
				refList = $.map(refList, function(val) {
					return val === key ? null : keyMap[val];
				});
				if (refList.length < 1) {
					refList = null;
				}
			}
		}
		return refList;
	};

	/**
	 * [ext-clones] Return true if this node has at least another clone with same refKey.
	 * @returns {boolean}
	 *
	 * @alias FancytreeNode#isClone
	 * @requires jquery.fancytree.clones.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.isClone = function() {
		var refKey = this.refKey || null,
			refList = (refKey && this.tree.refMap[refKey]) || null;
		return !!(refList && refList.length > 1);
	};

	/**
	 * [ext-clones] Update key and/or refKey for an existing node.
	 * @param {string} key
	 * @param {string} refKey
	 * @returns {boolean}
	 *
	 * @alias FancytreeNode#reRegister
	 * @requires jquery.fancytree.clones.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.reRegister = function(
		key,
		refKey
	) {
		key = key == null ? null : "" + key;
		refKey = refKey == null ? null : "" + refKey;
		// this.debug("reRegister", key, refKey);

		var tree = this.tree,
			prevKey = this.key,
			prevRefKey = this.refKey,
			keyMap = tree.keyMap,
			refMap = tree.refMap,
			refList = refMap[prevRefKey] || null,
			//		curCloneKeys = refList ? node.getCloneList(true),
			modified = false;

		// Key has changed: update all references
		if (key != null && key !== this.key) {
			if (keyMap[key]) {
				$.error(
					"[ext-clones] reRegister(" +
						key +
						"): already exists: " +
						this
				);
			}
			// Update keyMap
			delete keyMap[prevKey];
			keyMap[key] = this;
			// Update refMap
			if (refList) {
				refMap[prevRefKey] = $.map(refList, function(e) {
					return e === prevKey ? key : e;
				});
			}
			this.key = key;
			modified = true;
		}

		// refKey has changed
		if (refKey != null && refKey !== this.refKey) {
			// Remove previous refKeys
			if (refList) {
				if (refList.length === 1) {
					delete refMap[prevRefKey];
				} else {
					refMap[prevRefKey] = $.map(refList, function(e) {
						return e === prevKey ? null : e;
					});
				}
			}
			// Add refKey
			if (refMap[refKey]) {
				refMap[refKey].append(key);
			} else {
				refMap[refKey] = [this.key];
			}
			this.refKey = refKey;
			modified = true;
		}
		return modified;
	};

	/**
	 * [ext-clones] Define a refKey for an existing node.
	 * @param {string} refKey
	 * @returns {boolean}
	 *
	 * @alias FancytreeNode#setRefKey
	 * @requires jquery.fancytree.clones.js
	 * @since 2.16
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.setRefKey = function(refKey) {
		return this.reRegister(null, refKey);
	};

	/**
	 * [ext-clones] Return all nodes with a given refKey (null if not found).
	 * @param {string} refKey
	 * @param {FancytreeNode} [rootNode] optionally restrict results to descendants of this node
	 * @returns {FancytreeNode[] | null}
	 * @alias Fancytree#getNodesByRef
	 * @requires jquery.fancytree.clones.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.getNodesByRef = function(
		refKey,
		rootNode
	) {
		var keyMap = this.keyMap,
			refList = this.refMap[refKey] || null;

		if (refList) {
			// Convert key list to node list
			if (rootNode) {
				refList = $.map(refList, function(val) {
					var node = keyMap[val];
					return node.isDescendantOf(rootNode) ? node : null;
				});
			} else {
				refList = $.map(refList, function(val) {
					return keyMap[val];
				});
			}
			if (refList.length < 1) {
				refList = null;
			}
		}
		return refList;
	};

	/**
	 * [ext-clones] Replace a refKey with a new one.
	 * @param {string} oldRefKey
	 * @param {string} newRefKey
	 * @alias Fancytree#changeRefKey
	 * @requires jquery.fancytree.clones.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.changeRefKey = function(
		oldRefKey,
		newRefKey
	) {
		var i,
			node,
			keyMap = this.keyMap,
			refList = this.refMap[oldRefKey] || null;

		if (refList) {
			for (i = 0; i < refList.length; i++) {
				node = keyMap[refList[i]];
				node.refKey = newRefKey;
			}
			delete this.refMap[oldRefKey];
			this.refMap[newRefKey] = refList;
		}
	};

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "clones",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			highlightActiveClones: true, // set 'fancytree-active-clone' on active clones and all peers
			highlightClones: false, // set 'fancytree-clone' class on any node that has at least one clone
		},

		treeCreate: function(ctx) {
			this._superApply(arguments);
			ctx.tree.refMap = {};
			ctx.tree.keyMap = {};
		},
		treeInit: function(ctx) {
			this.$container.addClass("fancytree-ext-clones");
			_assert(ctx.options.defaultKey == null);
			// Generate unique / reproducible default keys
			ctx.options.defaultKey = function(node) {
				return calcUniqueKey(node);
			};
			// The default implementation loads initial data
			this._superApply(arguments);
		},
		treeClear: function(ctx) {
			ctx.tree.refMap = {};
			ctx.tree.keyMap = {};
			return this._superApply(arguments);
		},
		treeRegisterNode: function(ctx, add, node) {
			var refList,
				len,
				tree = ctx.tree,
				keyMap = tree.keyMap,
				refMap = tree.refMap,
				key = node.key,
				refKey = node && node.refKey != null ? "" + node.refKey : null;

			//		ctx.tree.debug("clones.treeRegisterNode", add, node);

			if (node.isStatusNode()) {
				return this._super(ctx, add, node);
			}

			if (add) {
				if (keyMap[node.key] != null) {
					var other = keyMap[node.key],
						msg =
							"clones.treeRegisterNode: duplicate key '" +
							node.key +
							"': /" +
							node.getPath(true) +
							" => " +
							other.getPath(true);
					// Sometimes this exception is not visible in the console,
					// so we also write it:
					tree.error(msg);
					$.error(msg);
				}
				keyMap[key] = node;

				if (refKey) {
					refList = refMap[refKey];
					if (refList) {
						refList.push(key);
						if (
							refList.length === 2 &&
							ctx.options.clones.highlightClones
						) {
							// Mark peer node, if it just became a clone (no need to
							// mark current node, since it will be rendered later anyway)
							keyMap[refList[0]].renderStatus();
						}
					} else {
						refMap[refKey] = [key];
					}
					// node.debug("clones.treeRegisterNode: add clone =>", refMap[refKey]);
				}
			} else {
				if (keyMap[key] == null) {
					$.error(
						"clones.treeRegisterNode: node.key not registered: " +
							node.key
					);
				}
				delete keyMap[key];
				if (refKey) {
					refList = refMap[refKey];
					// node.debug("clones.treeRegisterNode: remove clone BEFORE =>", refMap[refKey]);
					if (refList) {
						len = refList.length;
						if (len <= 1) {
							_assert(len === 1);
							_assert(refList[0] === key);
							delete refMap[refKey];
						} else {
							_removeArrayMember(refList, key);
							// Unmark peer node, if this was the only clone
							if (
								len === 2 &&
								ctx.options.clones.highlightClones
							) {
								//							node.debug("clones.treeRegisterNode: last =>", node.getCloneList());
								keyMap[refList[0]].renderStatus();
							}
						}
						// node.debug("clones.treeRegisterNode: remove clone =>", refMap[refKey]);
					}
				}
			}
			return this._super(ctx, add, node);
		},
		nodeRenderStatus: function(ctx) {
			var $span,
				res,
				node = ctx.node;

			res = this._super(ctx);

			if (ctx.options.clones.highlightClones) {
				$span = $(node[ctx.tree.statusClassPropName]);
				// Only if span already exists
				if ($span.length && node.isClone()) {
					//				node.debug("clones.nodeRenderStatus: ", ctx.options.clones.highlightClones);
					$span.addClass("fancytree-clone");
				}
			}
			return res;
		},
		nodeSetActive: function(ctx, flag, callOpts) {
			var res,
				scpn = ctx.tree.statusClassPropName,
				node = ctx.node;

			res = this._superApply(arguments);

			if (ctx.options.clones.highlightActiveClones && node.isClone()) {
				$.each(node.getCloneList(true), function(idx, n) {
					// n.debug("clones.nodeSetActive: ", flag !== false);
					$(n[scpn]).toggleClass(
						"fancytree-active-clone",
						flag !== false
					);
				});
			}
			return res;
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.dnd5.js' *//*!
 * jquery.fancytree.dnd5.js
 *
 * Drag-and-drop support (native HTML5).
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

/*
 #TODO
	Compatiblity when dragging between *separate* windows:

		   Drag from Chrome   Edge    FF    IE11    Safari
	  To Chrome      ok       ok      ok    NO      ?
		 Edge        ok       ok      ok    NO      ?
		 FF          ok       ok      ok    NO      ?
		 IE 11       ok       ok      ok    ok      ?
		 Safari      ?        ?       ?     ?       ok

 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/******************************************************************************
	 * Private functions and variables
	 */
	var FT = $.ui.fancytree,
		isMac = /Mac/.test(navigator.platform),
		classDragSource = "fancytree-drag-source",
		classDragRemove = "fancytree-drag-remove",
		classDropAccept = "fancytree-drop-accept",
		classDropAfter = "fancytree-drop-after",
		classDropBefore = "fancytree-drop-before",
		classDropOver = "fancytree-drop-over",
		classDropReject = "fancytree-drop-reject",
		classDropTarget = "fancytree-drop-target",
		nodeMimeType = "application/x-fancytree-node",
		$dropMarker = null,
		$dragImage,
		$extraHelper,
		SOURCE_NODE = null,
		SOURCE_NODE_LIST = null,
		$sourceList = null,
		DRAG_ENTER_RESPONSE = null,
		// SESSION_DATA = null, // plain object passed to events as `data`
		SUGGESTED_DROP_EFFECT = null,
		REQUESTED_DROP_EFFECT = null,
		REQUESTED_EFFECT_ALLOWED = null,
		LAST_HIT_MODE = null,
		DRAG_OVER_STAMP = null; // Time when a node entered the 'over' hitmode

	/* */
	function _clearGlobals() {
		DRAG_ENTER_RESPONSE = null;
		DRAG_OVER_STAMP = null;
		REQUESTED_DROP_EFFECT = null;
		REQUESTED_EFFECT_ALLOWED = null;
		SUGGESTED_DROP_EFFECT = null;
		SOURCE_NODE = null;
		SOURCE_NODE_LIST = null;
		if ($sourceList) {
			$sourceList.removeClass(classDragSource + " " + classDragRemove);
		}
		$sourceList = null;
		if ($dropMarker) {
			$dropMarker.hide();
		}
		// Take this badge off of me - I can't use it anymore:
		if ($extraHelper) {
			$extraHelper.remove();
			$extraHelper = null;
		}
	}

	/* Convert number to string and prepend +/-; return empty string for 0.*/
	function offsetString(n) {
		// eslint-disable-next-line no-nested-ternary
		return n === 0 ? "" : n > 0 ? "+" + n : "" + n;
	}

	/* Convert a dragEnter() or dragOver() response to a canonical form.
	 * Return false or plain object
	 * @param {string|object|boolean} r
	 * @return {object|false}
	 */
	function normalizeDragEnterResponse(r) {
		var res;

		if (!r) {
			return false;
		}
		if ($.isPlainObject(r)) {
			res = {
				over: !!r.over,
				before: !!r.before,
				after: !!r.after,
			};
		} else if ($.isArray(r)) {
			res = {
				over: $.inArray("over", r) >= 0,
				before: $.inArray("before", r) >= 0,
				after: $.inArray("after", r) >= 0,
			};
		} else {
			res = {
				over: r === true || r === "over",
				before: r === true || r === "before",
				after: r === true || r === "after",
			};
		}
		if (Object.keys(res).length === 0) {
			return false;
		}
		// if( Object.keys(res).length === 1 ) {
		// 	res.unique = res[0];
		// }
		return res;
	}

	/* Convert a dataTransfer.effectAllowed to a canonical form.
	 * Return false or plain object
	 * @param {string|boolean} r
	 * @return {object|false}
	 */
	// function normalizeEffectAllowed(r) {
	// 	if (!r || r === "none") {
	// 		return false;
	// 	}
	// 	var all = r === "all",
	// 		res = {
	// 			copy: all || /copy/i.test(r),
	// 			link: all || /link/i.test(r),
	// 			move: all || /move/i.test(r),
	// 		};

	// 	return res;
	// }

	/* Implement auto scrolling when drag cursor is in top/bottom area of scroll parent. */
	function autoScroll(tree, event) {
		var spOfs,
			scrollTop,
			delta,
			dndOpts = tree.options.dnd5,
			sp = tree.$scrollParent[0],
			sensitivity = dndOpts.scrollSensitivity,
			speed = dndOpts.scrollSpeed,
			scrolled = 0;

		if (sp !== document && sp.tagName !== "HTML") {
			spOfs = tree.$scrollParent.offset();
			scrollTop = sp.scrollTop;
			if (spOfs.top + sp.offsetHeight - event.pageY < sensitivity) {
				delta =
					sp.scrollHeight -
					tree.$scrollParent.innerHeight() -
					scrollTop;
				// console.log ("sp.offsetHeight: " + sp.offsetHeight
				// 	+ ", spOfs.top: " + spOfs.top
				// 	+ ", scrollTop: " + scrollTop
				// 	+ ", innerHeight: " + tree.$scrollParent.innerHeight()
				// 	+ ", scrollHeight: " + sp.scrollHeight
				// 	+ ", delta: " + delta
				// 	);
				if (delta > 0) {
					sp.scrollTop = scrolled = scrollTop + speed;
				}
			} else if (scrollTop > 0 && event.pageY - spOfs.top < sensitivity) {
				sp.scrollTop = scrolled = scrollTop - speed;
			}
		} else {
			scrollTop = $(document).scrollTop();
			if (scrollTop > 0 && event.pageY - scrollTop < sensitivity) {
				scrolled = scrollTop - speed;
				$(document).scrollTop(scrolled);
			} else if (
				$(window).height() - (event.pageY - scrollTop) <
				sensitivity
			) {
				scrolled = scrollTop + speed;
				$(document).scrollTop(scrolled);
			}
		}
		if (scrolled) {
			tree.debug("autoScroll: " + scrolled + "px");
		}
		return scrolled;
	}

	/* Guess dropEffect from modifier keys.
	 * Using rules suggested here:
	 *     https://ux.stackexchange.com/a/83769
	 * @returns
	 *     'copy', 'link', 'move', or 'none'
	 */
	function evalEffectModifiers(tree, event, effectDefault) {
		var res = effectDefault;

		if (isMac) {
			if (event.metaKey && event.altKey) {
				// Mac: [Control] + [Option]
				res = "link";
			} else if (event.ctrlKey) {
				// Chrome on Mac: [Control]
				res = "link";
			} else if (event.metaKey) {
				// Mac: [Command]
				res = "move";
			} else if (event.altKey) {
				// Mac: [Option]
				res = "copy";
			}
		} else {
			if (event.ctrlKey) {
				// Windows: [Ctrl]
				res = "copy";
			} else if (event.shiftKey) {
				// Windows: [Shift]
				res = "move";
			} else if (event.altKey) {
				// Windows: [Alt]
				res = "link";
			}
		}
		if (res !== SUGGESTED_DROP_EFFECT) {
			tree.info(
				"evalEffectModifiers: " +
					event.type +
					" - evalEffectModifiers(): " +
					SUGGESTED_DROP_EFFECT +
					" -> " +
					res
			);
		}
		SUGGESTED_DROP_EFFECT = res;
		// tree.debug("evalEffectModifiers: " + res);
		return res;
	}
	/*
	 * Check if the previous callback (dragEnter, dragOver, ...) has changed
	 * the `data` object and apply those settings.
	 *
	 * Safari:
	 *     It seems that `dataTransfer.dropEffect` can only be set on dragStart, and will remain
	 *     even if the cursor changes when [Alt] or [Ctrl] are pressed (?)
	 * Using rules suggested here:
	 *     https://ux.stackexchange.com/a/83769
	 * @returns
	 *     'copy', 'link', 'move', or 'none'
	 */
	function prepareDropEffectCallback(event, data) {
		var tree = data.tree,
			dataTransfer = data.dataTransfer;

		if (event.type === "dragstart") {
			data.effectAllowed = tree.options.dnd5.effectAllowed;
			data.dropEffect = tree.options.dnd5.dropEffectDefault;
		} else {
			data.effectAllowed = REQUESTED_EFFECT_ALLOWED;
			data.dropEffect = REQUESTED_DROP_EFFECT;
		}
		data.dropEffectSuggested = evalEffectModifiers(
			tree,
			event,
			tree.options.dnd5.dropEffectDefault
		);
		data.isMove = data.dropEffect === "move";
		data.files = dataTransfer.files || [];

		// if (REQUESTED_EFFECT_ALLOWED !== dataTransfer.effectAllowed) {
		// 	tree.warn(
		// 		"prepareDropEffectCallback(" +
		// 			event.type +
		// 			"): dataTransfer.effectAllowed changed from " +
		// 			REQUESTED_EFFECT_ALLOWED +
		// 			" -> " +
		// 			dataTransfer.effectAllowed
		// 	);
		// }
		// if (REQUESTED_DROP_EFFECT !== dataTransfer.dropEffect) {
		// 	tree.warn(
		// 		"prepareDropEffectCallback(" +
		// 			event.type +
		// 			"): dataTransfer.dropEffect changed from requested " +
		// 			REQUESTED_DROP_EFFECT +
		// 			" to " +
		// 			dataTransfer.dropEffect
		// 	);
		// }
	}

	function applyDropEffectCallback(event, data, allowDrop) {
		var tree = data.tree,
			dataTransfer = data.dataTransfer;

		if (
			event.type !== "dragstart" &&
			REQUESTED_EFFECT_ALLOWED !== data.effectAllowed
		) {
			tree.warn(
				"effectAllowed should only be changed in dragstart event: " +
					event.type +
					": data.effectAllowed changed from " +
					REQUESTED_EFFECT_ALLOWED +
					" -> " +
					data.effectAllowed
			);
		}

		if (allowDrop === false) {
			tree.info("applyDropEffectCallback: allowDrop === false");
			data.effectAllowed = "none";
			data.dropEffect = "none";
		}
		// if (REQUESTED_DROP_EFFECT !== data.dropEffect) {
		// 	tree.debug(
		// 		"applyDropEffectCallback(" +
		// 			event.type +
		// 			"): data.dropEffect changed from previous " +
		// 			REQUESTED_DROP_EFFECT +
		// 			" to " +
		// 			data.dropEffect
		// 	);
		// }

		data.isMove = data.dropEffect === "move";
		// data.isMove = data.dropEffectSuggested === "move";

		REQUESTED_EFFECT_ALLOWED = data.effectAllowed;
		REQUESTED_DROP_EFFECT = data.dropEffect;

		// if (REQUESTED_DROP_EFFECT !== dataTransfer.dropEffect) {
		// 	data.tree.info(
		// 		"applyDropEffectCallback(" +
		// 			event.type +
		// 			"): dataTransfer.dropEffect changed from " +
		// 			REQUESTED_DROP_EFFECT +
		// 			" -> " +
		// 			dataTransfer.dropEffect
		// 	);
		// }
		dataTransfer.effectAllowed = REQUESTED_EFFECT_ALLOWED;
		dataTransfer.dropEffect = REQUESTED_DROP_EFFECT;

		// tree.debug(
		// 	"applyDropEffectCallback(" +
		// 		event.type +
		// 		"): set " +
		// 		dataTransfer.dropEffect +
		// 		"/" +
		// 		dataTransfer.effectAllowed
		// );
		// if (REQUESTED_DROP_EFFECT !== dataTransfer.dropEffect) {
		// 	data.tree.warn(
		// 		"applyDropEffectCallback(" +
		// 			event.type +
		// 			"): could not set dataTransfer.dropEffect to " +
		// 			REQUESTED_DROP_EFFECT +
		// 			": got " +
		// 			dataTransfer.dropEffect
		// 	);
		// }
		return REQUESTED_DROP_EFFECT;
	}

	/* Handle dragover event (fired every x ms) on valid drop targets.
	 *
	 * - Auto-scroll when cursor is in border regions
	 * - Apply restrictioan like 'preventVoidMoves'
	 * - Calculate hit mode
	 * - Calculate drop effect
	 * - Trigger dragOver() callback to let user modify hit mode and drop effect
	 * - Adjust the drop marker accordingly
	 *
	 * @returns hitMode
	 */
	function handleDragOver(event, data) {
		// Implement auto-scrolling
		if (data.options.dnd5.scroll) {
			autoScroll(data.tree, event);
		}
		// Bail out with previous response if we get an invalid dragover
		if (!data.node) {
			data.tree.warn("Ignored dragover for non-node"); //, event, data);
			return LAST_HIT_MODE;
		}

		var markerOffsetX,
			nodeOfs,
			pos,
			relPosY,
			hitMode = null,
			tree = data.tree,
			options = tree.options,
			dndOpts = options.dnd5,
			targetNode = data.node,
			sourceNode = data.otherNode,
			markerAt = "center",
			$target = $(targetNode.span),
			$targetTitle = $target.find("span.fancytree-title");

		if (DRAG_ENTER_RESPONSE === false) {
			tree.debug("Ignored dragover, since dragenter returned false.");
			return false;
		} else if (typeof DRAG_ENTER_RESPONSE === "string") {
			$.error("assert failed: dragenter returned string");
		}
		// Calculate hitMode from relative cursor position.
		nodeOfs = $target.offset();
		relPosY = (event.pageY - nodeOfs.top) / $target.height();

		if (DRAG_ENTER_RESPONSE.after && relPosY > 0.75) {
			hitMode = "after";
		} else if (
			!DRAG_ENTER_RESPONSE.over &&
			DRAG_ENTER_RESPONSE.after &&
			relPosY > 0.5
		) {
			hitMode = "after";
		} else if (DRAG_ENTER_RESPONSE.before && relPosY <= 0.25) {
			hitMode = "before";
		} else if (
			!DRAG_ENTER_RESPONSE.over &&
			DRAG_ENTER_RESPONSE.before &&
			relPosY <= 0.5
		) {
			hitMode = "before";
		} else if (DRAG_ENTER_RESPONSE.over) {
			hitMode = "over";
		}
		// Prevent no-ops like 'before source node'
		// TODO: these are no-ops when moving nodes, but not in copy mode
		if (dndOpts.preventVoidMoves && data.dropEffect === "move") {
			if (targetNode === sourceNode) {
				targetNode.debug("Drop over source node prevented.");
				hitMode = null;
			} else if (
				hitMode === "before" &&
				sourceNode &&
				targetNode === sourceNode.getNextSibling()
			) {
				targetNode.debug("Drop after source node prevented.");
				hitMode = null;
			} else if (
				hitMode === "after" &&
				sourceNode &&
				targetNode === sourceNode.getPrevSibling()
			) {
				targetNode.debug("Drop before source node prevented.");
				hitMode = null;
			} else if (
				hitMode === "over" &&
				sourceNode &&
				sourceNode.parent === targetNode &&
				sourceNode.isLastSibling()
			) {
				targetNode.debug("Drop last child over own parent prevented.");
				hitMode = null;
			}
		}
		// Let callback modify the calculated hitMode
		data.hitMode = hitMode;
		if (hitMode && dndOpts.dragOver) {
			prepareDropEffectCallback(event, data);
			dndOpts.dragOver(targetNode, data);
			var allowDrop = !!hitMode;
			applyDropEffectCallback(event, data, allowDrop);
			hitMode = data.hitMode;
		}
		LAST_HIT_MODE = hitMode;
		//
		if (hitMode === "after" || hitMode === "before" || hitMode === "over") {
			markerOffsetX = dndOpts.dropMarkerOffsetX || 0;
			switch (hitMode) {
				case "before":
					markerAt = "top";
					markerOffsetX += dndOpts.dropMarkerInsertOffsetX || 0;
					break;
				case "after":
					markerAt = "bottom";
					markerOffsetX += dndOpts.dropMarkerInsertOffsetX || 0;
					break;
			}

			pos = {
				my: "left" + offsetString(markerOffsetX) + " center",
				at: "left " + markerAt,
				of: $targetTitle,
			};
			if (options.rtl) {
				pos.my = "right" + offsetString(-markerOffsetX) + " center";
				pos.at = "right " + markerAt;
				// console.log("rtl", pos);
			}
			$dropMarker
				.toggleClass(classDropAfter, hitMode === "after")
				.toggleClass(classDropOver, hitMode === "over")
				.toggleClass(classDropBefore, hitMode === "before")
				.show()
				.position(FT.fixPositionOptions(pos));
		} else {
			$dropMarker.hide();
			// console.log("hide dropmarker")
		}

		$(targetNode.span)
			.toggleClass(
				classDropTarget,
				hitMode === "after" ||
					hitMode === "before" ||
					hitMode === "over"
			)
			.toggleClass(classDropAfter, hitMode === "after")
			.toggleClass(classDropBefore, hitMode === "before")
			.toggleClass(classDropAccept, hitMode === "over")
			.toggleClass(classDropReject, hitMode === false);

		return hitMode;
	}

	/*
	 * Handle dragstart drag dragend events on the container
	 */
	function onDragEvent(event) {
		var json,
			tree = this,
			dndOpts = tree.options.dnd5,
			node = FT.getNode(event),
			dataTransfer =
				event.dataTransfer || event.originalEvent.dataTransfer,
			data = {
				tree: tree,
				node: node,
				options: tree.options,
				originalEvent: event.originalEvent,
				widget: tree.widget,
				dataTransfer: dataTransfer,
				useDefaultImage: true,
				dropEffect: undefined,
				dropEffectSuggested: undefined,
				effectAllowed: undefined, // set by dragstart
				files: undefined, // only for drop events
				isCancelled: undefined, // set by dragend
				isMove: undefined,
			};

		switch (event.type) {
			case "dragstart":
				if (!node) {
					tree.info("Ignored dragstart on a non-node.");
					return false;
				}
				// Store current source node in different formats
				SOURCE_NODE = node;

				// Also optionally store selected nodes
				if (dndOpts.multiSource === false) {
					SOURCE_NODE_LIST = [node];
				} else if (dndOpts.multiSource === true) {
					SOURCE_NODE_LIST = tree.getSelectedNodes();
					if (!node.isSelected()) {
						SOURCE_NODE_LIST.unshift(node);
					}
				} else {
					SOURCE_NODE_LIST = dndOpts.multiSource(node, data);
				}
				// Cache as array of jQuery objects for faster access:
				$sourceList = $(
					$.map(SOURCE_NODE_LIST, function(n) {
						return n.span;
					})
				);
				// Set visual feedback
				$sourceList.addClass(classDragSource);

				// Set payload
				// Note:
				// Transfer data is only accessible on dragstart and drop!
				// For all other events the formats and kinds in the drag
				// data store list of items representing dragged data can be
				// enumerated, but the data itself is unavailable and no new
				// data can be added.
				var nodeData = node.toDict();
				nodeData.treeId = node.tree._id;
				json = JSON.stringify(nodeData);
				try {
					dataTransfer.setData(nodeMimeType, json);
					dataTransfer.setData("text/html", $(node.span).html());
					dataTransfer.setData("text/plain", node.title);
				} catch (ex) {
					// IE only accepts 'text' type
					tree.warn(
						"Could not set data (IE only accepts 'text') - " + ex
					);
				}
				// We always need to set the 'text' type if we want to drag
				// Because IE 11 only accepts this single type.
				// If we pass JSON here, IE can can access all node properties,
				// even when the source lives in another window. (D'n'd inside
				// the same window will always work.)
				// The drawback is, that in this case ALL browsers will see
				// the JSON representation as 'text', so dragging
				// to a text field will insert the JSON string instead of
				// the node title.
				if (dndOpts.setTextTypeJson) {
					dataTransfer.setData("text", json);
				} else {
					dataTransfer.setData("text", node.title);
				}

				// Set the allowed drag modes (combinations of move, copy, and link)
				// (effectAllowed can only be set in the dragstart event.)
				// This can be overridden in the dragStart() callback
				prepareDropEffectCallback(event, data);

				// Let user cancel or modify above settings
				// Realize potential changes by previous callback
				if (dndOpts.dragStart(node, data) === false) {
					// Cancel dragging
					// dataTransfer.dropEffect = "none";
					_clearGlobals();
					return false;
				}
				applyDropEffectCallback(event, data);

				// Unless user set `data.useDefaultImage` to false in dragStart,
				// generata a default drag image now:
				$extraHelper = null;

				if (data.useDefaultImage) {
					// Set the title as drag image (otherwise it would contain the expander)
					$dragImage = $(node.span).find(".fancytree-title");

					if (SOURCE_NODE_LIST && SOURCE_NODE_LIST.length > 1) {
						// Add a counter badge to node title if dragging more than one node.
						// We want this, because the element that is used as drag image
						// must be *visible* in the DOM, so we cannot create some hidden
						// custom markup.
						// See https://kryogenix.org/code/browser/custom-drag-image.html
						// Also, since IE 11 and Edge don't support setDragImage() alltogether,
						// it gives som feedback to the user.
						// The badge will be removed later on drag end.
						$extraHelper = $(
							"<span class='fancytree-childcounter'/>"
						)
							.text("+" + (SOURCE_NODE_LIST.length - 1))
							.appendTo($dragImage);
					}
					if (dataTransfer.setDragImage) {
						// IE 11 and Edge do not support this
						dataTransfer.setDragImage($dragImage[0], -10, -10);
					}
				}
				return true;

			case "drag":
				// Called every few milliseconds (no matter if the
				// cursor is over a valid drop target)
				// data.tree.info("drag", SOURCE_NODE)
				prepareDropEffectCallback(event, data);
				dndOpts.dragDrag(node, data);
				applyDropEffectCallback(event, data);

				$sourceList.toggleClass(classDragRemove, data.isMove);
				break;

			case "dragend":
				// Called at the end of a d'n'd process (after drop)
				// Note caveat: If drop removed the dragged source element,
				// we may not get this event, since the target does not exist
				// anymore
				prepareDropEffectCallback(event, data);

				_clearGlobals();

				data.isCancelled = !LAST_HIT_MODE;
				dndOpts.dragEnd(node, data, !LAST_HIT_MODE);
				// applyDropEffectCallback(event, data);
				break;
		}
	}
	/*
	 * Handle dragenter dragover dragleave drop events on the container
	 */
	function onDropEvent(event) {
		var json,
			allowAutoExpand,
			nodeData,
			isSourceFtNode,
			r,
			res,
			tree = this,
			dndOpts = tree.options.dnd5,
			allowDrop = null,
			node = FT.getNode(event),
			dataTransfer =
				event.dataTransfer || event.originalEvent.dataTransfer,
			data = {
				tree: tree,
				node: node,
				options: tree.options,
				originalEvent: event.originalEvent,
				widget: tree.widget,
				hitMode: DRAG_ENTER_RESPONSE,
				dataTransfer: dataTransfer,
				otherNode: SOURCE_NODE || null,
				otherNodeList: SOURCE_NODE_LIST || null,
				otherNodeData: null, // set by drop event
				useDefaultImage: true,
				dropEffect: undefined,
				dropEffectSuggested: undefined,
				effectAllowed: undefined, // set by dragstart
				files: null, // list of File objects (may be [])
				isCancelled: undefined, // set by drop event
				isMove: undefined,
			};

		// data.isMove = dropEffect === "move";

		switch (event.type) {
			case "dragenter":
				// The dragenter event is fired when a dragged element or
				// text selection enters a valid drop target.

				DRAG_OVER_STAMP = null;
				if (!node) {
					// Sometimes we get dragenter for the container element
					tree.debug(
						"Ignore non-node " +
							event.type +
							": " +
							event.target.tagName +
							"." +
							event.target.className
					);
					DRAG_ENTER_RESPONSE = false;
					break;
				}

				$(node.span)
					.addClass(classDropOver)
					.removeClass(classDropAccept + " " + classDropReject);

				// Data is only readable in the dragstart and drop event,
				// but we can check for the type:
				isSourceFtNode =
					$.inArray(nodeMimeType, dataTransfer.types) >= 0;

				if (dndOpts.preventNonNodes && !isSourceFtNode) {
					node.debug("Reject dropping a non-node.");
					DRAG_ENTER_RESPONSE = false;
					break;
				} else if (
					dndOpts.preventForeignNodes &&
					(!SOURCE_NODE || SOURCE_NODE.tree !== node.tree)
				) {
					node.debug("Reject dropping a foreign node.");
					DRAG_ENTER_RESPONSE = false;
					break;
				} else if (
					dndOpts.preventSameParent &&
					data.otherNode &&
					data.otherNode.tree === node.tree &&
					node.parent === data.otherNode.parent
				) {
					node.debug("Reject dropping as sibling (same parent).");
					DRAG_ENTER_RESPONSE = false;
					break;
				} else if (
					dndOpts.preventRecursion &&
					data.otherNode &&
					data.otherNode.tree === node.tree &&
					node.isDescendantOf(data.otherNode)
				) {
					node.debug("Reject dropping below own ancestor.");
					DRAG_ENTER_RESPONSE = false;
					break;
				}
				$dropMarker.show();

				// Call dragEnter() to figure out if (and where) dropping is allowed
				prepareDropEffectCallback(event, data);
				r = dndOpts.dragEnter(node, data);

				res = normalizeDragEnterResponse(r);
				DRAG_ENTER_RESPONSE = res;

				allowDrop = res && (res.over || res.before || res.after);

				applyDropEffectCallback(event, data, allowDrop);
				break;

			case "dragover":
				if (!node) {
					tree.debug(
						"Ignore non-node " +
							event.type +
							": " +
							event.target.tagName +
							"." +
							event.target.className
					);
					break;
				}
				// The dragover event is fired when an element or text
				// selection is being dragged over a valid drop target
				// (every few hundred milliseconds).
				// tree.debug(
				// 	event.type +
				// 		": dropEffect: " +
				// 		dataTransfer.dropEffect
				// );
				prepareDropEffectCallback(event, data);
				LAST_HIT_MODE = handleDragOver(event, data);

				// The flag controls the preventDefault() below:
				allowDrop = !!LAST_HIT_MODE;
				allowAutoExpand =
					LAST_HIT_MODE === "over" || LAST_HIT_MODE === false;

				if (
					allowAutoExpand &&
					!node.expanded &&
					node.hasChildren() !== false
				) {
					if (!DRAG_OVER_STAMP) {
						DRAG_OVER_STAMP = Date.now();
					} else if (
						dndOpts.autoExpandMS &&
						Date.now() - DRAG_OVER_STAMP > dndOpts.autoExpandMS &&
						(!dndOpts.dragExpand ||
							dndOpts.dragExpand(node, data) !== false)
					) {
						node.setExpanded();
					}
				} else {
					DRAG_OVER_STAMP = null;
				}
				break;

			case "dragleave":
				// NOTE: dragleave is fired AFTER the dragenter event of the
				// FOLLOWING element.
				if (!node) {
					tree.debug(
						"Ignore non-node " +
							event.type +
							": " +
							event.target.tagName +
							"." +
							event.target.className
					);
					break;
				}
				if (!$(node.span).hasClass(classDropOver)) {
					node.debug("Ignore dragleave (multi).");
					break;
				}
				$(node.span).removeClass(
					classDropOver +
						" " +
						classDropAccept +
						" " +
						classDropReject
				);
				node.scheduleAction("cancel");
				dndOpts.dragLeave(node, data);
				$dropMarker.hide();
				break;

			case "drop":
				// Data is only readable in the (dragstart and) drop event:

				if ($.inArray(nodeMimeType, dataTransfer.types) >= 0) {
					nodeData = dataTransfer.getData(nodeMimeType);
					tree.info(
						event.type +
							": getData('application/x-fancytree-node'): '" +
							nodeData +
							"'"
					);
				}
				if (!nodeData) {
					// 1. Source is not a Fancytree node, or
					// 2. If the FT mime type was set, but returns '', this
					//    is probably IE 11 (which only supports 'text')
					nodeData = dataTransfer.getData("text");
					tree.info(
						event.type + ": getData('text'): '" + nodeData + "'"
					);
				}
				if (nodeData) {
					try {
						// 'text' type may contain JSON if IE is involved
						// and setTextTypeJson option was set
						json = JSON.parse(nodeData);
						if (json.title !== undefined) {
							data.otherNodeData = json;
						}
					} catch (ex) {
						// assume 'text' type contains plain text, so `otherNodeData`
						// should not be set
					}
				}
				tree.debug(
					event.type +
						": nodeData: '" +
						nodeData +
						"', otherNodeData: ",
					data.otherNodeData
				);

				$(node.span).removeClass(
					classDropOver +
						" " +
						classDropAccept +
						" " +
						classDropReject
				);

				// Let user implement the actual drop operation
				data.hitMode = LAST_HIT_MODE;
				prepareDropEffectCallback(event, data, !LAST_HIT_MODE);
				data.isCancelled = !LAST_HIT_MODE;

				var orgSourceElem = SOURCE_NODE && SOURCE_NODE.span,
					orgSourceTree = SOURCE_NODE && SOURCE_NODE.tree;

				dndOpts.dragDrop(node, data);
				// applyDropEffectCallback(event, data);

				// Prevent browser's default drop handling, i.e. open as link, ...
				event.preventDefault();

				if (orgSourceElem && !document.body.contains(orgSourceElem)) {
					// The drop handler removed the original drag source from
					// the DOM, so the dragend event will probaly not fire.
					if (orgSourceTree === tree) {
						tree.debug(
							"Drop handler removed source element: generating dragEnd."
						);
						dndOpts.dragEnd(SOURCE_NODE, data);
					} else {
						tree.warn(
							"Drop handler removed source element: dragend event may be lost."
						);
					}
				}

				_clearGlobals();

				break;
		}
		// Dnd API madness: we must PREVENT default handling to enable dropping
		if (allowDrop) {
			event.preventDefault();
			return false;
		}
	}

	/** [ext-dnd5] Return a Fancytree instance, from element, index, event, or jQueryObject.
	 *
	 * @returns {FancytreeNode[]} List of nodes (empty if no drag operation)
	 * @example
	 * $.ui.fancytree.getDragNodeList();
	 *
	 * @alias Fancytree_Static#getDragNodeList
	 * @requires jquery.fancytree.dnd5.js
	 * @since 2.31
	 */
	$.ui.fancytree.getDragNodeList = function() {
		return SOURCE_NODE_LIST || [];
	};

	/** [ext-dnd5] Return the FancytreeNode that is currently being dragged.
	 *
	 * If multiple nodes are dragged, only the first is returned.
	 *
	 * @returns {FancytreeNode | null} dragged nodes or null if no drag operation
	 * @example
	 * $.ui.fancytree.getDragNode();
	 *
	 * @alias Fancytree_Static#getDragNode
	 * @requires jquery.fancytree.dnd5.js
	 * @since 2.31
	 */
	$.ui.fancytree.getDragNode = function() {
		return SOURCE_NODE;
	};

	/******************************************************************************
	 *
	 */

	$.ui.fancytree.registerExtension({
		name: "dnd5",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			autoExpandMS: 1500, // Expand nodes after n milliseconds of hovering
			dropMarkerInsertOffsetX: -16, // Additional offset for drop-marker with hitMode = "before"/"after"
			dropMarkerOffsetX: -24, // Absolute position offset for .fancytree-drop-marker relatively to ..fancytree-title (icon/img near a node accepting drop)
			multiSource: false, // true: Drag multiple (i.e. selected) nodes. Also a callback() is allowed
			effectAllowed: "all", // Restrict the possible cursor shapes and modifier operations (can also be set in the dragStart event)
			// dropEffect: "auto", // 'copy'|'link'|'move'|'auto'(calculate from `effectAllowed`+modifier keys) or callback(node, data) that returns such string.
			dropEffectDefault: "move", // Default dropEffect ('copy', 'link', or 'move') when no modifier is pressed (overide in dragDrag, dragOver).
			preventForeignNodes: false, // Prevent dropping nodes from different Fancytrees
			preventNonNodes: false, // Prevent dropping items other than Fancytree nodes
			preventRecursion: true, // Prevent dropping nodes on own descendants
			preventSameParent: false, // Prevent dropping nodes under same direct parent
			preventVoidMoves: true, // Prevent dropping nodes 'before self', etc.
			scroll: true, // Enable auto-scrolling while dragging
			scrollSensitivity: 20, // Active top/bottom margin in pixel
			scrollSpeed: 5, // Pixel per event
			setTextTypeJson: false, // Allow dragging of nodes to different IE windows
			// Events (drag support)
			dragStart: null, // Callback(sourceNode, data), return true, to enable dnd drag
			dragDrag: $.noop, // Callback(sourceNode, data)
			dragEnd: $.noop, // Callback(sourceNode, data)
			// Events (drop support)
			dragEnter: null, // Callback(targetNode, data), return true, to enable dnd drop
			dragOver: $.noop, // Callback(targetNode, data)
			dragExpand: $.noop, // Callback(targetNode, data), return false to prevent autoExpand
			dragDrop: $.noop, // Callback(targetNode, data)
			dragLeave: $.noop, // Callback(targetNode, data)
		},

		treeInit: function(ctx) {
			var $temp,
				tree = ctx.tree,
				opts = ctx.options,
				glyph = opts.glyph || null,
				dndOpts = opts.dnd5;

			if ($.inArray("dnd", opts.extensions) >= 0) {
				$.error("Extensions 'dnd' and 'dnd5' are mutually exclusive.");
			}
			if (dndOpts.dragStop) {
				$.error(
					"dragStop is not used by ext-dnd5. Use dragEnd instead."
				);
			}
			if (dndOpts.preventRecursiveMoves != null) {
				$.error(
					"preventRecursiveMoves was renamed to preventRecursion."
				);
			}

			// Implement `opts.createNode` event to add the 'draggable' attribute
			// #680: this must happen before calling super.treeInit()
			if (dndOpts.dragStart) {
				FT.overrideMethod(ctx.options, "createNode", function(
					event,
					data
				) {
					// Default processing if any
					this._super.apply(this, arguments);
					if (data.node.span) {
						data.node.span.draggable = true;
					} else {
						data.node.warn("Cannot add `draggable`: no span tag");
					}
				});
			}
			this._superApply(arguments);

			this.$container.addClass("fancytree-ext-dnd5");

			// Store the current scroll parent, which may be the tree
			// container, any enclosing div, or the document.
			// #761: scrollParent() always needs a container child
			$temp = $("<span>").appendTo(this.$container);
			this.$scrollParent = $temp.scrollParent();
			$temp.remove();

			$dropMarker = $("#fancytree-drop-marker");
			if (!$dropMarker.length) {
				$dropMarker = $("<div id='fancytree-drop-marker'></div>")
					.hide()
					.css({
						"z-index": 1000,
						// Drop marker should not steal dragenter/dragover events:
						"pointer-events": "none",
					})
					.prependTo("body");
				if (glyph) {
					FT.setSpanIcon(
						$dropMarker[0],
						glyph.map._addClass,
						glyph.map.dropMarker
					);
				}
			}
			$dropMarker.toggleClass("fancytree-rtl", !!opts.rtl);

			// Enable drag support if dragStart() is specified:
			if (dndOpts.dragStart) {
				// Bind drag event handlers
				tree.$container.on(
					"dragstart drag dragend",
					onDragEvent.bind(tree)
				);
			}
			// Enable drop support if dragEnter() is specified:
			if (dndOpts.dragEnter) {
				// Bind drop event handlers
				tree.$container.on(
					"dragenter dragover dragleave drop",
					onDropEvent.bind(tree)
				);
			}
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.edit.js' *//*!
 * jquery.fancytree.edit.js
 *
 * Make node titles editable.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Private functions and variables
	 */

	var isMac = /Mac/.test(navigator.platform),
		escapeHtml = $.ui.fancytree.escapeHtml,
		unescapeHtml = $.ui.fancytree.unescapeHtml;

	/**
	 * [ext-edit] Start inline editing of current node title.
	 *
	 * @alias FancytreeNode#editStart
	 * @requires Fancytree
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.editStart = function() {
		var $input,
			node = this,
			tree = this.tree,
			local = tree.ext.edit,
			instOpts = tree.options.edit,
			$title = $(".fancytree-title", node.span),
			eventData = {
				node: node,
				tree: tree,
				options: tree.options,
				isNew: $(node[tree.statusClassPropName]).hasClass(
					"fancytree-edit-new"
				),
				orgTitle: node.title,
				input: null,
				dirty: false,
			};

		// beforeEdit may want to modify the title before editing
		if (
			instOpts.beforeEdit.call(
				node,
				{ type: "beforeEdit" },
				eventData
			) === false
		) {
			return false;
		}
		$.ui.fancytree.assert(!local.currentNode, "recursive edit");
		local.currentNode = this;
		local.eventData = eventData;

		// Disable standard Fancytree mouse- and key handling
		tree.widget._unbind();

		local.lastDraggableAttrValue = node.span.draggable;
		if (local.lastDraggableAttrValue) {
			node.span.draggable = false;
		}

		// #116: ext-dnd prevents the blur event, so we have to catch outer clicks
		$(document).on("mousedown.fancytree-edit", function(event) {
			if (!$(event.target).hasClass("fancytree-edit-input")) {
				node.editEnd(true, event);
			}
		});

		// Replace node with <input>
		$input = $("<input />", {
			class: "fancytree-edit-input",
			type: "text",
			value: tree.options.escapeTitles
				? eventData.orgTitle
				: unescapeHtml(eventData.orgTitle),
		});
		local.eventData.input = $input;
		if (instOpts.adjustWidthOfs != null) {
			$input.width($title.width() + instOpts.adjustWidthOfs);
		}
		if (instOpts.inputCss != null) {
			$input.css(instOpts.inputCss);
		}

		$title.html($input);

		// Focus <input> and bind keyboard handler
		$input
			.focus()
			.change(function(event) {
				$input.addClass("fancytree-edit-dirty");
			})
			.on("keydown", function(event) {
				switch (event.which) {
					case $.ui.keyCode.ESCAPE:
						node.editEnd(false, event);
						break;
					case $.ui.keyCode.ENTER:
						node.editEnd(true, event);
						return false; // so we don't start editmode on Mac
				}
				event.stopPropagation();
			})
			.blur(function(event) {
				return node.editEnd(true, event);
			});

		instOpts.edit.call(node, { type: "edit" }, eventData);
	};

	/**
	 * [ext-edit] Stop inline editing.
	 * @param {Boolean} [applyChanges=false] false: cancel edit, true: save (if modified)
	 * @alias FancytreeNode#editEnd
	 * @requires jquery.fancytree.edit.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.editEnd = function(
		applyChanges,
		_event
	) {
		var newVal,
			node = this,
			tree = this.tree,
			local = tree.ext.edit,
			eventData = local.eventData,
			instOpts = tree.options.edit,
			$title = $(".fancytree-title", node.span),
			$input = $title.find("input.fancytree-edit-input");

		if (instOpts.trim) {
			$input.val($.trim($input.val()));
		}
		newVal = $input.val();

		eventData.dirty = newVal !== node.title;
		eventData.originalEvent = _event;

		// Find out, if saving is required
		if (applyChanges === false) {
			// If true/false was passed, honor this (except in rename mode, if unchanged)
			eventData.save = false;
		} else if (eventData.isNew) {
			// In create mode, we save everything, except for empty text
			eventData.save = newVal !== "";
		} else {
			// In rename mode, we save everyting, except for empty or unchanged text
			eventData.save = eventData.dirty && newVal !== "";
		}
		// Allow to break (keep editor open), modify input, or re-define data.save
		if (
			instOpts.beforeClose.call(
				node,
				{ type: "beforeClose" },
				eventData
			) === false
		) {
			return false;
		}
		if (
			eventData.save &&
			instOpts.save.call(node, { type: "save" }, eventData) === false
		) {
			return false;
		}
		$input.removeClass("fancytree-edit-dirty").off();
		// Unbind outer-click handler
		$(document).off(".fancytree-edit");

		if (eventData.save) {
			// # 171: escape user input (not required if global escaping is on)
			node.setTitle(
				tree.options.escapeTitles ? newVal : escapeHtml(newVal)
			);
			node.setFocus();
		} else {
			if (eventData.isNew) {
				node.remove();
				node = eventData.node = null;
				local.relatedNode.setFocus();
			} else {
				node.renderTitle();
				node.setFocus();
			}
		}
		local.eventData = null;
		local.currentNode = null;
		local.relatedNode = null;
		// Re-enable mouse and keyboard handling
		tree.widget._bind();

		if (local.lastDraggableAttrValue) {
			node.span.draggable = true;
		}

		// Set keyboard focus, even if setFocus() claims 'nothing to do'
		$(tree.$container).focus();
		eventData.input = null;
		instOpts.close.call(node, { type: "close" }, eventData);
		return true;
	};

	/**
	 * [ext-edit] Create a new child or sibling node and start edit mode.
	 *
	 * @param {String} [mode='child'] 'before', 'after', or 'child'
	 * @param {Object} [init] NodeData (or simple title string)
	 * @alias FancytreeNode#editCreateNode
	 * @requires jquery.fancytree.edit.js
	 * @since 2.4
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.editCreateNode = function(
		mode,
		init
	) {
		var newNode,
			tree = this.tree,
			self = this;

		mode = mode || "child";
		if (init == null) {
			init = { title: "" };
		} else if (typeof init === "string") {
			init = { title: init };
		} else {
			$.ui.fancytree.assert($.isPlainObject(init));
		}
		// Make sure node is expanded (and loaded) in 'child' mode
		if (
			mode === "child" &&
			!this.isExpanded() &&
			this.hasChildren() !== false
		) {
			this.setExpanded().done(function() {
				self.editCreateNode(mode, init);
			});
			return;
		}
		newNode = this.addNode(init, mode);

		// #644: Don't filter new nodes.
		newNode.match = true;
		$(newNode[tree.statusClassPropName])
			.removeClass("fancytree-hide")
			.addClass("fancytree-match");

		newNode.makeVisible(/*{noAnimation: true}*/).done(function() {
			$(newNode[tree.statusClassPropName]).addClass("fancytree-edit-new");
			self.tree.ext.edit.relatedNode = self;
			newNode.editStart();
		});
	};

	/**
	 * [ext-edit] Check if any node in this tree  in edit mode.
	 *
	 * @returns {FancytreeNode | null}
	 * @alias Fancytree#isEditing
	 * @requires jquery.fancytree.edit.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.isEditing = function() {
		return this.ext.edit ? this.ext.edit.currentNode : null;
	};

	/**
	 * [ext-edit] Check if this node is in edit mode.
	 * @returns {Boolean} true if node is currently beeing edited
	 * @alias FancytreeNode#isEditing
	 * @requires jquery.fancytree.edit.js
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.isEditing = function() {
		return this.tree.ext.edit
			? this.tree.ext.edit.currentNode === this
			: false;
	};

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "edit",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			adjustWidthOfs: 4, // null: don't adjust input size to content
			allowEmpty: false, // Prevent empty input
			inputCss: { minWidth: "3em" },
			// triggerCancel: ["esc", "tab", "click"],
			triggerStart: ["f2", "mac+enter", "shift+click"],
			trim: true, // Trim whitespace before save
			// Events:
			beforeClose: $.noop, // Return false to prevent cancel/save (data.input is available)
			beforeEdit: $.noop, // Return false to prevent edit mode
			close: $.noop, // Editor was removed
			edit: $.noop, // Editor was opened (available as data.input)
			//		keypress: $.noop,    // Not yet implemented
			save: $.noop, // Save data.input.val() or return false to keep editor open
		},
		// Local attributes
		currentNode: null,

		treeInit: function(ctx) {
			var tree = ctx.tree;

			this._superApply(arguments);

			this.$container
				.addClass("fancytree-ext-edit")
				.on("fancytreebeforeupdateviewport", function(event, data) {
					var editNode = tree.isEditing();
					// When scrolling, the TR may be re-used by another node, so the
					// active cell marker an
					if (editNode) {
						editNode.info("Cancel edit due to scroll event.");
						editNode.editEnd(false, event);
					}
				});
		},
		nodeClick: function(ctx) {
			var eventStr = $.ui.fancytree.eventToString(ctx.originalEvent),
				triggerStart = ctx.options.edit.triggerStart;

			if (
				eventStr === "shift+click" &&
				$.inArray("shift+click", triggerStart) >= 0
			) {
				if (ctx.originalEvent.shiftKey) {
					ctx.node.editStart();
					return false;
				}
			}
			if (
				eventStr === "click" &&
				$.inArray("clickActive", triggerStart) >= 0
			) {
				// Only when click was inside title text (not aynwhere else in the row)
				if (
					ctx.node.isActive() &&
					!ctx.node.isEditing() &&
					$(ctx.originalEvent.target).hasClass("fancytree-title")
				) {
					ctx.node.editStart();
					return false;
				}
			}
			return this._superApply(arguments);
		},
		nodeDblclick: function(ctx) {
			if ($.inArray("dblclick", ctx.options.edit.triggerStart) >= 0) {
				ctx.node.editStart();
				return false;
			}
			return this._superApply(arguments);
		},
		nodeKeydown: function(ctx) {
			switch (ctx.originalEvent.which) {
				case 113: // [F2]
					if ($.inArray("f2", ctx.options.edit.triggerStart) >= 0) {
						ctx.node.editStart();
						return false;
					}
					break;
				case $.ui.keyCode.ENTER:
					if (
						$.inArray("mac+enter", ctx.options.edit.triggerStart) >=
							0 &&
						isMac
					) {
						ctx.node.editStart();
						return false;
					}
					break;
			}
			return this._superApply(arguments);
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.filter.js' *//*!
 * jquery.fancytree.filter.js
 *
 * Remove or highlight tree nodes, based on a filter.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Private functions and variables
	 */

	var KeyNoData = "__not_found__",
		escapeHtml = $.ui.fancytree.escapeHtml;

	function _escapeRegex(str) {
		return (str + "").replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
	}

	function extractHtmlText(s) {
		if (s.indexOf(">") >= 0) {
			return $("<div/>")
				.html(s)
				.text();
		}
		return s;
	}

	$.ui.fancytree._FancytreeClass.prototype._applyFilterImpl = function(
		filter,
		branchMode,
		_opts
	) {
		var match,
			statusNode,
			re,
			reHighlight,
			temp,
			prevEnableUpdate,
			count = 0,
			treeOpts = this.options,
			escapeTitles = treeOpts.escapeTitles,
			prevAutoCollapse = treeOpts.autoCollapse,
			opts = $.extend({}, treeOpts.filter, _opts),
			hideMode = opts.mode === "hide",
			leavesOnly = !!opts.leavesOnly && !branchMode;

		// Default to 'match title substring (not case sensitive)'
		if (typeof filter === "string") {
			if (filter === "") {
				this.warn(
					"Fancytree passing an empty string as a filter is handled as clearFilter()."
				);
				this.clearFilter();
				return;
			}
			if (opts.fuzzy) {
				// See https://codereview.stackexchange.com/questions/23899/faster-javascript-fuzzy-string-matching-function/23905#23905
				// and http://www.quora.com/How-is-the-fuzzy-search-algorithm-in-Sublime-Text-designed
				// and http://www.dustindiaz.com/autocomplete-fuzzy-matching
				match = filter.split("").reduce(function(a, b) {
					return a + "[^" + b + "]*" + b;
				});
			} else {
				match = _escapeRegex(filter); // make sure a '.' is treated literally
			}
			re = new RegExp(".*" + match + ".*", "i");
			reHighlight = new RegExp(_escapeRegex(filter), "gi");
			filter = function(node) {
				if (!node.title) {
					return false;
				}
				var text = escapeTitles
						? node.title
						: extractHtmlText(node.title),
					res = !!re.test(text);

				if (res && opts.highlight) {
					if (escapeTitles) {
						// #740: we must not apply the marks to escaped entity names, e.g. `&quot;`
						// Use some exotic characters to mark matches:
						temp = text.replace(reHighlight, function(s) {
							return "\uFFF7" + s + "\uFFF8";
						});
						// now we can escape the title...
						node.titleWithHighlight = escapeHtml(temp)
							// ... and finally insert the desired `<mark>` tags
							.replace(/\uFFF7/g, "<mark>")
							.replace(/\uFFF8/g, "</mark>");
					} else {
						node.titleWithHighlight = text.replace(
							reHighlight,
							function(s) {
								return "<mark>" + s + "</mark>";
							}
						);
					}
					// node.debug("filter", escapeTitles, text, node.titleWithHighlight);
				}
				return res;
			};
		}

		this.enableFilter = true;
		this.lastFilterArgs = arguments;

		prevEnableUpdate = this.enableUpdate(false);

		this.$div.addClass("fancytree-ext-filter");
		if (hideMode) {
			this.$div.addClass("fancytree-ext-filter-hide");
		} else {
			this.$div.addClass("fancytree-ext-filter-dimm");
		}
		this.$div.toggleClass(
			"fancytree-ext-filter-hide-expanders",
			!!opts.hideExpanders
		);
		// Reset current filter
		this.rootNode.subMatchCount = 0;
		this.visit(function(node) {
			delete node.match;
			delete node.titleWithHighlight;
			node.subMatchCount = 0;
		});
		statusNode = this.getRootNode()._findDirectChild(KeyNoData);
		if (statusNode) {
			statusNode.remove();
		}

		// Adjust node.hide, .match, and .subMatchCount properties
		treeOpts.autoCollapse = false; // #528

		this.visit(function(node) {
			if (leavesOnly && node.children != null) {
				return;
			}
			var res = filter(node),
				matchedByBranch = false;

			if (res === "skip") {
				node.visit(function(c) {
					c.match = false;
				}, true);
				return "skip";
			}
			if (!res && (branchMode || res === "branch") && node.parent.match) {
				res = true;
				matchedByBranch = true;
			}
			if (res) {
				count++;
				node.match = true;
				node.visitParents(function(p) {
					if (p !== node) {
						p.subMatchCount += 1;
					}
					// Expand match (unless this is no real match, but only a node in a matched branch)
					if (opts.autoExpand && !matchedByBranch && !p.expanded) {
						p.setExpanded(true, {
							noAnimation: true,
							noEvents: true,
							scrollIntoView: false,
						});
						p._filterAutoExpanded = true;
					}
				}, true);
			}
		});
		treeOpts.autoCollapse = prevAutoCollapse;

		if (count === 0 && opts.nodata && hideMode) {
			statusNode = opts.nodata;
			if ($.isFunction(statusNode)) {
				statusNode = statusNode();
			}
			if (statusNode === true) {
				statusNode = {};
			} else if (typeof statusNode === "string") {
				statusNode = { title: statusNode };
			}
			statusNode = $.extend(
				{
					statusNodeType: "nodata",
					key: KeyNoData,
					title: this.options.strings.noData,
				},
				statusNode
			);

			this.getRootNode().addNode(statusNode).match = true;
		}
		// Redraw whole tree
		this._callHook("treeStructureChanged", this, "applyFilter");
		// this.render();
		this.enableUpdate(prevEnableUpdate);
		return count;
	};

	/**
	 * [ext-filter] Dimm or hide nodes.
	 *
	 * @param {function | string} filter
	 * @param {boolean} [opts={autoExpand: false, leavesOnly: false}]
	 * @returns {integer} count
	 * @alias Fancytree#filterNodes
	 * @requires jquery.fancytree.filter.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.filterNodes = function(
		filter,
		opts
	) {
		if (typeof opts === "boolean") {
			opts = { leavesOnly: opts };
			this.warn(
				"Fancytree.filterNodes() leavesOnly option is deprecated since 2.9.0 / 2015-04-19. Use opts.leavesOnly instead."
			);
		}
		return this._applyFilterImpl(filter, false, opts);
	};

	/**
	 * [ext-filter] Dimm or hide whole branches.
	 *
	 * @param {function | string} filter
	 * @param {boolean} [opts={autoExpand: false}]
	 * @returns {integer} count
	 * @alias Fancytree#filterBranches
	 * @requires jquery.fancytree.filter.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.filterBranches = function(
		filter,
		opts
	) {
		return this._applyFilterImpl(filter, true, opts);
	};

	/**
	 * [ext-filter] Reset the filter.
	 *
	 * @alias Fancytree#clearFilter
	 * @requires jquery.fancytree.filter.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.clearFilter = function() {
		var $title,
			statusNode = this.getRootNode()._findDirectChild(KeyNoData),
			escapeTitles = this.options.escapeTitles,
			enhanceTitle = this.options.enhanceTitle,
			prevEnableUpdate = this.enableUpdate(false);

		if (statusNode) {
			statusNode.remove();
		}
		// we also counted root node's subMatchCount
		delete this.rootNode.match;
		delete this.rootNode.subMatchCount;

		this.visit(function(node) {
			if (node.match && node.span) {
				// #491, #601
				$title = $(node.span).find(">span.fancytree-title");
				if (escapeTitles) {
					$title.text(node.title);
				} else {
					$title.html(node.title);
				}
				if (enhanceTitle) {
					enhanceTitle(
						{ type: "enhanceTitle" },
						{ node: node, $title: $title }
					);
				}
			}
			delete node.match;
			delete node.subMatchCount;
			delete node.titleWithHighlight;
			if (node.$subMatchBadge) {
				node.$subMatchBadge.remove();
				delete node.$subMatchBadge;
			}
			if (node._filterAutoExpanded && node.expanded) {
				node.setExpanded(false, {
					noAnimation: true,
					noEvents: true,
					scrollIntoView: false,
				});
			}
			delete node._filterAutoExpanded;
		});
		this.enableFilter = false;
		this.lastFilterArgs = null;
		this.$div.removeClass(
			"fancytree-ext-filter fancytree-ext-filter-dimm fancytree-ext-filter-hide"
		);
		this._callHook("treeStructureChanged", this, "clearFilter");
		// this.render();
		this.enableUpdate(prevEnableUpdate);
	};

	/**
	 * [ext-filter] Return true if a filter is currently applied.
	 *
	 * @returns {Boolean}
	 * @alias Fancytree#isFilterActive
	 * @requires jquery.fancytree.filter.js
	 * @since 2.13
	 */
	$.ui.fancytree._FancytreeClass.prototype.isFilterActive = function() {
		return !!this.enableFilter;
	};

	/**
	 * [ext-filter] Return true if this node is matched by current filter (or no filter is active).
	 *
	 * @returns {Boolean}
	 * @alias FancytreeNode#isMatched
	 * @requires jquery.fancytree.filter.js
	 * @since 2.13
	 */
	$.ui.fancytree._FancytreeNodeClass.prototype.isMatched = function() {
		return !(this.tree.enableFilter && !this.match);
	};

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "filter",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			autoApply: true, // Re-apply last filter if lazy data is loaded
			autoExpand: false, // Expand all branches that contain matches while filtered
			counter: true, // Show a badge with number of matching child nodes near parent icons
			fuzzy: false, // Match single characters in order, e.g. 'fb' will match 'FooBar'
			hideExpandedCounter: true, // Hide counter badge if parent is expanded
			hideExpanders: false, // Hide expanders if all child nodes are hidden by filter
			highlight: true, // Highlight matches by wrapping inside <mark> tags
			leavesOnly: false, // Match end nodes only
			nodata: true, // Display a 'no data' status node if result is empty
			mode: "dimm", // Grayout unmatched nodes (pass "hide" to remove unmatched node instead)
		},
		nodeLoadChildren: function(ctx, source) {
			var tree = ctx.tree;

			return this._superApply(arguments).done(function() {
				if (
					tree.enableFilter &&
					tree.lastFilterArgs &&
					ctx.options.filter.autoApply
				) {
					tree._applyFilterImpl.apply(tree, tree.lastFilterArgs);
				}
			});
		},
		nodeSetExpanded: function(ctx, flag, callOpts) {
			var node = ctx.node;

			delete node._filterAutoExpanded;
			// Make sure counter badge is displayed again, when node is beeing collapsed
			if (
				!flag &&
				ctx.options.filter.hideExpandedCounter &&
				node.$subMatchBadge
			) {
				node.$subMatchBadge.show();
			}
			return this._superApply(arguments);
		},
		nodeRenderStatus: function(ctx) {
			// Set classes for current status
			var res,
				node = ctx.node,
				tree = ctx.tree,
				opts = ctx.options.filter,
				$title = $(node.span).find("span.fancytree-title"),
				$span = $(node[tree.statusClassPropName]),
				enhanceTitle = ctx.options.enhanceTitle,
				escapeTitles = ctx.options.escapeTitles;

			res = this._super(ctx);
			// nothing to do, if node was not yet rendered
			if (!$span.length || !tree.enableFilter) {
				return res;
			}
			$span
				.toggleClass("fancytree-match", !!node.match)
				.toggleClass("fancytree-submatch", !!node.subMatchCount)
				.toggleClass(
					"fancytree-hide",
					!(node.match || node.subMatchCount)
				);
			// Add/update counter badge
			if (
				opts.counter &&
				node.subMatchCount &&
				(!node.isExpanded() || !opts.hideExpandedCounter)
			) {
				if (!node.$subMatchBadge) {
					node.$subMatchBadge = $(
						"<span class='fancytree-childcounter'/>"
					);
					$(
						"span.fancytree-icon, span.fancytree-custom-icon",
						node.span
					).append(node.$subMatchBadge);
				}
				node.$subMatchBadge.show().text(node.subMatchCount);
			} else if (node.$subMatchBadge) {
				node.$subMatchBadge.hide();
			}
			// node.debug("nodeRenderStatus", node.titleWithHighlight, node.title)
			// #601: also check for $title.length, because we don't need to render
			// if node.span is null (i.e. not rendered)
			if (node.span && (!node.isEditing || !node.isEditing.call(node))) {
				if (node.titleWithHighlight) {
					$title.html(node.titleWithHighlight);
				} else if (escapeTitles) {
					$title.text(node.title);
				} else {
					$title.html(node.title);
				}
				if (enhanceTitle) {
					enhanceTitle(
						{ type: "enhanceTitle" },
						{ node: node, $title: $title }
					);
				}
			}
			return res;
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.glyph.js' *//*!
 * jquery.fancytree.glyph.js
 *
 * Use glyph-fonts, ligature-fonts, or SVG icons instead of icon sprites.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/******************************************************************************
	 * Private functions and variables
	 */

	var FT = $.ui.fancytree,
		PRESETS = {
			awesome3: {
				// Outdated!
				_addClass: "",
				checkbox: "icon-check-empty",
				checkboxSelected: "icon-check",
				checkboxUnknown: "icon-check icon-muted",
				dragHelper: "icon-caret-right",
				dropMarker: "icon-caret-right",
				error: "icon-exclamation-sign",
				expanderClosed: "icon-caret-right",
				expanderLazy: "icon-angle-right",
				expanderOpen: "icon-caret-down",
				loading: "icon-refresh icon-spin",
				nodata: "icon-meh",
				noExpander: "",
				radio: "icon-circle-blank",
				radioSelected: "icon-circle",
				// radioUnknown: "icon-circle icon-muted",
				// Default node icons.
				// (Use tree.options.icon callback to define custom icons based on node data)
				doc: "icon-file-alt",
				docOpen: "icon-file-alt",
				folder: "icon-folder-close-alt",
				folderOpen: "icon-folder-open-alt",
			},
			awesome4: {
				_addClass: "fa",
				checkbox: "fa-square-o",
				checkboxSelected: "fa-check-square-o",
				checkboxUnknown: "fa-square fancytree-helper-indeterminate-cb",
				dragHelper: "fa-arrow-right",
				dropMarker: "fa-long-arrow-right",
				error: "fa-warning",
				expanderClosed: "fa-caret-right",
				expanderLazy: "fa-angle-right",
				expanderOpen: "fa-caret-down",
				// We may prevent wobbling rotations on FF by creating a separate sub element:
				loading: { html: "<span class='fa fa-spinner fa-pulse' />" },
				nodata: "fa-meh-o",
				noExpander: "",
				radio: "fa-circle-thin", // "fa-circle-o"
				radioSelected: "fa-circle",
				// radioUnknown: "fa-dot-circle-o",
				// Default node icons.
				// (Use tree.options.icon callback to define custom icons based on node data)
				doc: "fa-file-o",
				docOpen: "fa-file-o",
				folder: "fa-folder-o",
				folderOpen: "fa-folder-open-o",
			},
			awesome5: {
				// fontawesome 5 have several different base classes
				// "far, fas, fal and fab" The rendered svg puts that prefix
				// in a different location so we have to keep them separate here
				_addClass: "",
				checkbox: "far fa-square",
				checkboxSelected: "far fa-check-square",
				// checkboxUnknown: "far fa-window-close",
				checkboxUnknown:
					"fas fa-square fancytree-helper-indeterminate-cb",
				radio: "far fa-circle",
				radioSelected: "fas fa-circle",
				radioUnknown: "far fa-dot-circle",
				dragHelper: "fas fa-arrow-right",
				dropMarker: "fas fa-long-arrow-alt-right",
				error: "fas fa-exclamation-triangle",
				expanderClosed: "fas fa-caret-right",
				expanderLazy: "fas fa-angle-right",
				expanderOpen: "fas fa-caret-down",
				loading: "fas fa-spinner fa-pulse",
				nodata: "far fa-meh",
				noExpander: "",
				// Default node icons.
				// (Use tree.options.icon callback to define custom icons based on node data)
				doc: "far fa-file",
				docOpen: "far fa-file",
				folder: "far fa-folder",
				folderOpen: "far fa-folder-open",
			},
			bootstrap3: {
				_addClass: "glyphicon",
				checkbox: "glyphicon-unchecked",
				checkboxSelected: "glyphicon-check",
				checkboxUnknown:
					"glyphicon-expand fancytree-helper-indeterminate-cb", // "glyphicon-share",
				dragHelper: "glyphicon-play",
				dropMarker: "glyphicon-arrow-right",
				error: "glyphicon-warning-sign",
				expanderClosed: "glyphicon-menu-right", // glyphicon-plus-sign
				expanderLazy: "glyphicon-menu-right", // glyphicon-plus-sign
				expanderOpen: "glyphicon-menu-down", // glyphicon-minus-sign
				loading: "glyphicon-refresh fancytree-helper-spin",
				nodata: "glyphicon-info-sign",
				noExpander: "",
				radio: "glyphicon-remove-circle", // "glyphicon-unchecked",
				radioSelected: "glyphicon-ok-circle", // "glyphicon-check",
				// radioUnknown: "glyphicon-ban-circle",
				// Default node icons.
				// (Use tree.options.icon callback to define custom icons based on node data)
				doc: "glyphicon-file",
				docOpen: "glyphicon-file",
				folder: "glyphicon-folder-close",
				folderOpen: "glyphicon-folder-open",
			},
			material: {
				_addClass: "material-icons",
				checkbox: { text: "check_box_outline_blank" },
				checkboxSelected: { text: "check_box" },
				checkboxUnknown: { text: "indeterminate_check_box" },
				dragHelper: { text: "play_arrow" },
				dropMarker: { text: "arrow-forward" },
				error: { text: "warning" },
				expanderClosed: { text: "chevron_right" },
				expanderLazy: { text: "last_page" },
				expanderOpen: { text: "expand_more" },
				loading: {
					text: "autorenew",
					addClass: "fancytree-helper-spin",
				},
				nodata: { text: "info" },
				noExpander: { text: "" },
				radio: { text: "radio_button_unchecked" },
				radioSelected: { text: "radio_button_checked" },
				// Default node icons.
				// (Use tree.options.icon callback to define custom icons based on node data)
				doc: { text: "insert_drive_file" },
				docOpen: { text: "insert_drive_file" },
				folder: { text: "folder" },
				folderOpen: { text: "folder_open" },
			},
		};

	function setIcon(span, baseClass, opts, type) {
		var map = opts.map,
			icon = map[type],
			$span = $(span),
			$counter = $span.find(".fancytree-childcounter"),
			setClass = baseClass + " " + (map._addClass || "");

		if (typeof icon === "string") {
			// #883: remove inner html that may be added by prev. mode
			span.innerHTML = "";
			$span.attr("class", setClass + " " + icon).append($counter);
		} else if (icon) {
			if (icon.text) {
				span.textContent = "" + icon.text;
			} else if (icon.html) {
				span.innerHTML = icon.html;
			} else {
				span.innerHTML = "";
			}
			$span
				.attr("class", setClass + " " + (icon.addClass || ""))
				.append($counter);
		}
	}

	$.ui.fancytree.registerExtension({
		name: "glyph",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			preset: null, // 'awesome3', 'awesome4', 'bootstrap3', 'material'
			map: {},
		},

		treeInit: function(ctx) {
			var tree = ctx.tree,
				opts = ctx.options.glyph;

			if (opts.preset) {
				FT.assert(
					!!PRESETS[opts.preset],
					"Invalid value for `options.glyph.preset`: " + opts.preset
				);
				opts.map = $.extend({}, PRESETS[opts.preset], opts.map);
			} else {
				tree.warn("ext-glyph: missing `preset` option.");
			}
			this._superApply(arguments);
			tree.$container.addClass("fancytree-ext-glyph");
		},
		nodeRenderStatus: function(ctx) {
			var checkbox,
				icon,
				res,
				span,
				node = ctx.node,
				$span = $(node.span),
				opts = ctx.options.glyph;

			res = this._super(ctx);

			if (node.isRoot()) {
				return res;
			}
			span = $span.children("span.fancytree-expander").get(0);
			if (span) {
				// if( node.isLoading() ){
				// icon = "loading";
				if (node.expanded && node.hasChildren()) {
					icon = "expanderOpen";
				} else if (node.isUndefined()) {
					icon = "expanderLazy";
				} else if (node.hasChildren()) {
					icon = "expanderClosed";
				} else {
					icon = "noExpander";
				}
				// span.className = "fancytree-expander " + map[icon];
				setIcon(span, "fancytree-expander", opts, icon);
			}

			if (node.tr) {
				span = $("td", node.tr)
					.find("span.fancytree-checkbox")
					.get(0);
			} else {
				span = $span.children("span.fancytree-checkbox").get(0);
			}
			if (span) {
				checkbox = FT.evalOption("checkbox", node, node, opts, false);
				if (
					(node.parent && node.parent.radiogroup) ||
					checkbox === "radio"
				) {
					icon = node.selected ? "radioSelected" : "radio";
					setIcon(
						span,
						"fancytree-checkbox fancytree-radio",
						opts,
						icon
					);
				} else {
					// eslint-disable-next-line no-nested-ternary
					icon = node.selected
						? "checkboxSelected"
						: node.partsel
						? "checkboxUnknown"
						: "checkbox";
					// span.className = "fancytree-checkbox " + map[icon];
					setIcon(span, "fancytree-checkbox", opts, icon);
				}
			}

			// Standard icon (note that this does not match .fancytree-custom-icon,
			// that might be set by opts.icon callbacks)
			span = $span.children("span.fancytree-icon").get(0);
			if (span) {
				if (node.statusNodeType) {
					icon = node.statusNodeType; // loading, error
				} else if (node.folder) {
					icon =
						node.expanded && node.hasChildren()
							? "folderOpen"
							: "folder";
				} else {
					icon = node.expanded ? "docOpen" : "doc";
				}
				setIcon(span, "fancytree-icon", opts, icon);
			}
			return res;
		},
		nodeSetStatus: function(ctx, status, message, details) {
			var res,
				span,
				opts = ctx.options.glyph,
				node = ctx.node;

			res = this._superApply(arguments);

			if (
				status === "error" ||
				status === "loading" ||
				status === "nodata"
			) {
				if (node.parent) {
					span = $("span.fancytree-expander", node.span).get(0);
					if (span) {
						setIcon(span, "fancytree-expander", opts, status);
					}
				} else {
					//
					span = $(
						".fancytree-statusnode-" + status,
						node[this.nodeContainerAttrName]
					)
						.find("span.fancytree-icon")
						.get(0);
					if (span) {
						setIcon(span, "fancytree-icon", opts, status);
					}
				}
			}
			return res;
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.gridnav.js' *//*!
 * jquery.fancytree.gridnav.js
 *
 * Support keyboard navigation for trees with embedded input controls.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define([
			"jquery",
			"./jquery.fancytree",
			"./jquery.fancytree.table",
		], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree.table"); // core + table
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Private functions and variables
	 */

	// Allow these navigation keys even when input controls are focused

	var KC = $.ui.keyCode,
		// which keys are *not* handled by embedded control, but passed to tree
		// navigation handler:
		NAV_KEYS = {
			text: [KC.UP, KC.DOWN],
			checkbox: [KC.UP, KC.DOWN, KC.LEFT, KC.RIGHT],
			link: [KC.UP, KC.DOWN, KC.LEFT, KC.RIGHT],
			radiobutton: [KC.UP, KC.DOWN, KC.LEFT, KC.RIGHT],
			"select-one": [KC.LEFT, KC.RIGHT],
			"select-multiple": [KC.LEFT, KC.RIGHT],
		};

	/* Calculate TD column index (considering colspans).*/
	function getColIdx($tr, $td) {
		var colspan,
			td = $td.get(0),
			idx = 0;

		$tr.children().each(function() {
			if (this === td) {
				return false;
			}
			colspan = $(this).prop("colspan");
			idx += colspan ? colspan : 1;
		});
		return idx;
	}

	/* Find TD at given column index (considering colspans).*/
	function findTdAtColIdx($tr, colIdx) {
		var colspan,
			res = null,
			idx = 0;

		$tr.children().each(function() {
			if (idx >= colIdx) {
				res = $(this);
				return false;
			}
			colspan = $(this).prop("colspan");
			idx += colspan ? colspan : 1;
		});
		return res;
	}

	/* Find adjacent cell for a given direction. Skip empty cells and consider merged cells */
	function findNeighbourTd($target, keyCode) {
		var $tr,
			colIdx,
			$td = $target.closest("td"),
			$tdNext = null;

		switch (keyCode) {
			case KC.LEFT:
				$tdNext = $td.prev();
				break;
			case KC.RIGHT:
				$tdNext = $td.next();
				break;
			case KC.UP:
			case KC.DOWN:
				$tr = $td.parent();
				colIdx = getColIdx($tr, $td);
				while (true) {
					$tr = keyCode === KC.UP ? $tr.prev() : $tr.next();
					if (!$tr.length) {
						break;
					}
					// Skip hidden rows
					if ($tr.is(":hidden")) {
						continue;
					}
					// Find adjacent cell in the same column
					$tdNext = findTdAtColIdx($tr, colIdx);
					// Skip cells that don't conatain a focusable element
					if ($tdNext && $tdNext.find(":input,a").length) {
						break;
					}
				}
				break;
		}
		return $tdNext;
	}

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "gridnav",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			autofocusInput: false, // Focus first embedded input if node gets activated
			handleCursorKeys: true, // Allow UP/DOWN in inputs to move to prev/next node
		},

		treeInit: function(ctx) {
			// gridnav requires the table extension to be loaded before itself
			this._requireExtension("table", true, true);
			this._superApply(arguments);

			this.$container.addClass("fancytree-ext-gridnav");

			// Activate node if embedded input gets focus (due to a click)
			this.$container.on("focusin", function(event) {
				var ctx2,
					node = $.ui.fancytree.getNode(event.target);

				if (node && !node.isActive()) {
					// Call node.setActive(), but also pass the event
					ctx2 = ctx.tree._makeHookContext(node, event);
					ctx.tree._callHook("nodeSetActive", ctx2, true);
				}
			});
		},
		nodeSetActive: function(ctx, flag, callOpts) {
			var $outer,
				opts = ctx.options.gridnav,
				node = ctx.node,
				event = ctx.originalEvent || {},
				triggeredByInput = $(event.target).is(":input");

			flag = flag !== false;

			this._superApply(arguments);

			if (flag) {
				if (ctx.options.titlesTabbable) {
					if (!triggeredByInput) {
						$(node.span)
							.find("span.fancytree-title")
							.focus();
						node.setFocus();
					}
					// If one node is tabbable, the container no longer needs to be
					ctx.tree.$container.attr("tabindex", "-1");
					// ctx.tree.$container.removeAttr("tabindex");
				} else if (opts.autofocusInput && !triggeredByInput) {
					// Set focus to input sub input (if node was clicked, but not
					// when TAB was pressed )
					$outer = $(node.tr || node.span);
					$outer
						.find(":input:enabled")
						.first()
						.focus();
				}
			}
		},
		nodeKeydown: function(ctx) {
			var inputType,
				handleKeys,
				$td,
				opts = ctx.options.gridnav,
				event = ctx.originalEvent,
				$target = $(event.target);

			if ($target.is(":input:enabled")) {
				inputType = $target.prop("type");
			} else if ($target.is("a")) {
				inputType = "link";
			}
			// ctx.tree.debug("ext-gridnav nodeKeydown", event, inputType);

			if (inputType && opts.handleCursorKeys) {
				handleKeys = NAV_KEYS[inputType];
				if (handleKeys && $.inArray(event.which, handleKeys) >= 0) {
					$td = findNeighbourTd($target, event.which);
					if ($td && $td.length) {
						// ctx.node.debug("ignore keydown in input", event.which, handleKeys);
						$td.find(":input:enabled,a").focus();
						// Prevent Fancytree default navigation
						return false;
					}
				}
				return true;
			}
			// ctx.tree.debug("ext-gridnav NOT HANDLED", event, inputType);
			return this._superApply(arguments);
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.multi.js' *//*!
 * jquery.fancytree.multi.js
 *
 * Allow multiple selection of nodes  by mouse or keyboard.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Private functions and variables
	 */

	// var isMac = /Mac/.test(navigator.platform);

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "multi",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			allowNoSelect: false, //
			mode: "sameParent", //
			// Events:
			// beforeSelect: $.noop  // Return false to prevent cancel/save (data.input is available)
		},

		treeInit: function(ctx) {
			this._superApply(arguments);
			this.$container.addClass("fancytree-ext-multi");
			if (ctx.options.selectMode === 1) {
				$.error(
					"Fancytree ext-multi: selectMode: 1 (single) is not compatible."
				);
			}
		},
		nodeClick: function(ctx) {
			var //pluginOpts = ctx.options.multi,
				tree = ctx.tree,
				node = ctx.node,
				activeNode = tree.getActiveNode() || tree.getFirstChild(),
				isCbClick = ctx.targetType === "checkbox",
				isExpanderClick = ctx.targetType === "expander",
				eventStr = $.ui.fancytree.eventToString(ctx.originalEvent);

			switch (eventStr) {
				case "click":
					if (isExpanderClick) {
						break;
					} // Default handler will expand/collapse
					if (!isCbClick) {
						tree.selectAll(false);
						// Select clicked node (radio-button  mode)
						node.setSelected();
					}
					// Default handler will toggle checkbox clicks and activate
					break;
				case "shift+click":
					// node.debug("click")
					tree.visitRows(
						function(n) {
							// n.debug("click2", n===node, node)
							n.setSelected();
							if (n === node) {
								return false;
							}
						},
						{
							start: activeNode,
							reverse: activeNode.isBelowOf(node),
						}
					);
					break;
				case "ctrl+click":
				case "meta+click": // Mac: [Command]
					node.toggleSelected();
					return;
			}
			return this._superApply(arguments);
		},
		nodeKeydown: function(ctx) {
			var tree = ctx.tree,
				node = ctx.node,
				event = ctx.originalEvent,
				eventStr = $.ui.fancytree.eventToString(event);

			switch (eventStr) {
				case "up":
				case "down":
					tree.selectAll(false);
					node.navigate(event.which, true);
					tree.getActiveNode().setSelected();
					break;
				case "shift+up":
				case "shift+down":
					node.navigate(event.which, true);
					tree.getActiveNode().setSelected();
					break;
			}
			return this._superApply(arguments);
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.persist.js' *//*!
 * jquery.fancytree.persist.js
 *
 * Persist tree status in cookiesRemove or highlight tree nodes, based on a filter.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * @depends: js-cookie or jquery-cookie
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";
	/* global Cookies:false */

	/*******************************************************************************
	 * Private functions and variables
	 */
	var cookieStore = null,
		localStorageStore = window.localStorage
			? {
					get: function(key) {
						return window.localStorage.getItem(key);
					},
					set: function(key, value) {
						window.localStorage.setItem(key, value);
					},
					remove: function(key) {
						window.localStorage.removeItem(key);
					},
			  }
			: null,
		sessionStorageStore = window.sessionStorage
			? {
					get: function(key) {
						return window.sessionStorage.getItem(key);
					},
					set: function(key, value) {
						window.sessionStorage.setItem(key, value);
					},
					remove: function(key) {
						window.sessionStorage.removeItem(key);
					},
			  }
			: null,
		_assert = $.ui.fancytree.assert,
		ACTIVE = "active",
		EXPANDED = "expanded",
		FOCUS = "focus",
		SELECTED = "selected";

	if (typeof Cookies === "function") {
		// Assume https://github.com/js-cookie/js-cookie
		cookieStore = {
			get: Cookies.get,
			set: function(key, value) {
				Cookies.set(key, value, this.options.persist.cookie);
			},
			remove: Cookies.remove,
		};
	} else if ($ && typeof $.cookie === "function") {
		// Fall back to https://github.com/carhartl/jquery-cookie
		cookieStore = {
			get: $.cookie,
			set: function(key, value) {
				$.cookie.set(key, value, this.options.persist.cookie);
			},
			remove: $.removeCookie,
		};
	}

	/* Recursively load lazy nodes
	 * @param {string} mode 'load', 'expand', false
	 */
	function _loadLazyNodes(tree, local, keyList, mode, dfd) {
		var i,
			key,
			l,
			node,
			foundOne = false,
			expandOpts = tree.options.persist.expandOpts,
			deferredList = [],
			missingKeyList = [];

		keyList = keyList || [];
		dfd = dfd || $.Deferred();

		for (i = 0, l = keyList.length; i < l; i++) {
			key = keyList[i];
			node = tree.getNodeByKey(key);
			if (node) {
				if (mode && node.isUndefined()) {
					foundOne = true;
					tree.debug(
						"_loadLazyNodes: " + node + " is lazy: loading..."
					);
					if (mode === "expand") {
						deferredList.push(node.setExpanded(true, expandOpts));
					} else {
						deferredList.push(node.load());
					}
				} else {
					tree.debug("_loadLazyNodes: " + node + " already loaded.");
					node.setExpanded(true, expandOpts);
				}
			} else {
				missingKeyList.push(key);
				tree.debug("_loadLazyNodes: " + node + " was not yet found.");
			}
		}

		$.when.apply($, deferredList).always(function() {
			// All lazy-expands have finished
			if (foundOne && missingKeyList.length > 0) {
				// If we read new nodes from server, try to resolve yet-missing keys
				_loadLazyNodes(tree, local, missingKeyList, mode, dfd);
			} else {
				if (missingKeyList.length) {
					tree.warn(
						"_loadLazyNodes: could not load those keys: ",
						missingKeyList
					);
					for (i = 0, l = missingKeyList.length; i < l; i++) {
						key = keyList[i];
						local._appendKey(EXPANDED, keyList[i], false);
					}
				}
				dfd.resolve();
			}
		});
		return dfd;
	}

	/**
	 * [ext-persist] Remove persistence data of the given type(s).
	 * Called like
	 *     $.ui.fancytree.getTree("#tree").clearCookies("active expanded focus selected");
	 *
	 * @alias Fancytree#clearPersistData
	 * @requires jquery.fancytree.persist.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.clearPersistData = function(
		types
	) {
		var local = this.ext.persist,
			prefix = local.cookiePrefix;

		types = types || "active expanded focus selected";
		if (types.indexOf(ACTIVE) >= 0) {
			local._data(prefix + ACTIVE, null);
		}
		if (types.indexOf(EXPANDED) >= 0) {
			local._data(prefix + EXPANDED, null);
		}
		if (types.indexOf(FOCUS) >= 0) {
			local._data(prefix + FOCUS, null);
		}
		if (types.indexOf(SELECTED) >= 0) {
			local._data(prefix + SELECTED, null);
		}
	};

	$.ui.fancytree._FancytreeClass.prototype.clearCookies = function(types) {
		this.warn(
			"'tree.clearCookies()' is deprecated since v2.27.0: use 'clearPersistData()' instead."
		);
		return this.clearPersistData(types);
	};

	/**
	 * [ext-persist] Return persistence information from cookies
	 *
	 * Called like
	 *     $.ui.fancytree.getTree("#tree").getPersistData();
	 *
	 * @alias Fancytree#getPersistData
	 * @requires jquery.fancytree.persist.js
	 */
	$.ui.fancytree._FancytreeClass.prototype.getPersistData = function() {
		var local = this.ext.persist,
			prefix = local.cookiePrefix,
			delim = local.cookieDelimiter,
			res = {};

		res[ACTIVE] = local._data(prefix + ACTIVE);
		res[EXPANDED] = (local._data(prefix + EXPANDED) || "").split(delim);
		res[SELECTED] = (local._data(prefix + SELECTED) || "").split(delim);
		res[FOCUS] = local._data(prefix + FOCUS);
		return res;
	};

	/******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "persist",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			cookieDelimiter: "~",
			cookiePrefix: undefined, // 'fancytree-<treeId>-' by default
			cookie: {
				raw: false,
				expires: "",
				path: "",
				domain: "",
				secure: false,
			},
			expandLazy: false, // true: recursively expand and load lazy nodes
			expandOpts: undefined, // optional `opts` argument passed to setExpanded()
			fireActivate: true, // false: suppress `activate` event after active node was restored
			overrideSource: true, // true: cookie takes precedence over `source` data attributes.
			store: "auto", // 'cookie': force cookie, 'local': force localStore, 'session': force sessionStore
			types: "active expanded focus selected",
		},

		/* Generic read/write string data to cookie, sessionStorage or localStorage. */
		_data: function(key, value) {
			var store = this._local.store;

			if (value === undefined) {
				return store.get.call(this, key);
			} else if (value === null) {
				store.remove.call(this, key);
			} else {
				store.set.call(this, key, value);
			}
		},

		/* Append `key` to a cookie. */
		_appendKey: function(type, key, flag) {
			key = "" + key; // #90
			var local = this._local,
				instOpts = this.options.persist,
				delim = instOpts.cookieDelimiter,
				cookieName = local.cookiePrefix + type,
				data = local._data(cookieName),
				keyList = data ? data.split(delim) : [],
				idx = $.inArray(key, keyList);
			// Remove, even if we add a key,  so the key is always the last entry
			if (idx >= 0) {
				keyList.splice(idx, 1);
			}
			// Append key to cookie
			if (flag) {
				keyList.push(key);
			}
			local._data(cookieName, keyList.join(delim));
		},

		treeInit: function(ctx) {
			var tree = ctx.tree,
				opts = ctx.options,
				local = this._local,
				instOpts = this.options.persist;

			// // For 'auto' or 'cookie' mode, the cookie plugin must be available
			// _assert((instOpts.store !== "auto" && instOpts.store !== "cookie") || cookieStore,
			// 	"Missing required plugin for 'persist' extension: js.cookie.js or jquery.cookie.js");

			local.cookiePrefix =
				instOpts.cookiePrefix || "fancytree-" + tree._id + "-";
			local.storeActive = instOpts.types.indexOf(ACTIVE) >= 0;
			local.storeExpanded = instOpts.types.indexOf(EXPANDED) >= 0;
			local.storeSelected = instOpts.types.indexOf(SELECTED) >= 0;
			local.storeFocus = instOpts.types.indexOf(FOCUS) >= 0;
			local.store = null;

			if (instOpts.store === "auto") {
				instOpts.store = localStorageStore ? "local" : "cookie";
			}
			if ($.isPlainObject(instOpts.store)) {
				local.store = instOpts.store;
			} else if (instOpts.store === "cookie") {
				local.store = cookieStore;
			} else if (instOpts.store === "local") {
				local.store =
					instOpts.store === "local"
						? localStorageStore
						: sessionStorageStore;
			} else if (instOpts.store === "session") {
				local.store =
					instOpts.store === "local"
						? localStorageStore
						: sessionStorageStore;
			}
			_assert(local.store, "Need a valid store.");

			// Bind init-handler to apply cookie state
			tree.$div.on("fancytreeinit", function(event) {
				if (
					tree._triggerTreeEvent("beforeRestore", null, {}) === false
				) {
					return;
				}

				var cookie,
					dfd,
					i,
					keyList,
					node,
					prevFocus = local._data(local.cookiePrefix + FOCUS), // record this before node.setActive() overrides it;
					noEvents = instOpts.fireActivate === false;

				// tree.debug("document.cookie:", document.cookie);

				cookie = local._data(local.cookiePrefix + EXPANDED);
				keyList = cookie && cookie.split(instOpts.cookieDelimiter);

				if (local.storeExpanded) {
					// Recursively load nested lazy nodes if expandLazy is 'expand' or 'load'
					// Also remove expand-cookies for unmatched nodes
					dfd = _loadLazyNodes(
						tree,
						local,
						keyList,
						instOpts.expandLazy ? "expand" : false,
						null
					);
				} else {
					// nothing to do
					dfd = new $.Deferred().resolve();
				}

				dfd.done(function() {
					if (local.storeSelected) {
						cookie = local._data(local.cookiePrefix + SELECTED);
						if (cookie) {
							keyList = cookie.split(instOpts.cookieDelimiter);
							for (i = 0; i < keyList.length; i++) {
								node = tree.getNodeByKey(keyList[i]);
								if (node) {
									if (
										node.selected === undefined ||
										(instOpts.overrideSource &&
											node.selected === false)
									) {
										//									node.setSelected();
										node.selected = true;
										node.renderStatus();
									}
								} else {
									// node is no longer member of the tree: remove from cookie also
									local._appendKey(
										SELECTED,
										keyList[i],
										false
									);
								}
							}
						}
						// In selectMode 3 we have to fix the child nodes, since we
						// only stored the selected *top* nodes
						if (tree.options.selectMode === 3) {
							tree.visit(function(n) {
								if (n.selected) {
									n.fixSelection3AfterClick();
									return "skip";
								}
							});
						}
					}
					if (local.storeActive) {
						cookie = local._data(local.cookiePrefix + ACTIVE);
						if (
							cookie &&
							(opts.persist.overrideSource || !tree.activeNode)
						) {
							node = tree.getNodeByKey(cookie);
							if (node) {
								node.debug("persist: set active", cookie);
								// We only want to set the focus if the container
								// had the keyboard focus before
								node.setActive(true, {
									noFocus: true,
									noEvents: noEvents,
								});
							}
						}
					}
					if (local.storeFocus && prevFocus) {
						node = tree.getNodeByKey(prevFocus);
						if (node) {
							// node.debug("persist: set focus", cookie);
							if (tree.options.titlesTabbable) {
								$(node.span)
									.find(".fancytree-title")
									.focus();
							} else {
								$(tree.$container).focus();
							}
							// node.setFocus();
						}
					}
					tree._triggerTreeEvent("restore", null, {});
				});
			});
			// Init the tree
			return this._superApply(arguments);
		},
		nodeSetActive: function(ctx, flag, callOpts) {
			var res,
				local = this._local;

			flag = flag !== false;
			res = this._superApply(arguments);

			if (local.storeActive) {
				local._data(
					local.cookiePrefix + ACTIVE,
					this.activeNode ? this.activeNode.key : null
				);
			}
			return res;
		},
		nodeSetExpanded: function(ctx, flag, callOpts) {
			var res,
				node = ctx.node,
				local = this._local;

			flag = flag !== false;
			res = this._superApply(arguments);

			if (local.storeExpanded) {
				local._appendKey(EXPANDED, node.key, flag);
			}
			return res;
		},
		nodeSetFocus: function(ctx, flag) {
			var res,
				local = this._local;

			flag = flag !== false;
			res = this._superApply(arguments);

			if (local.storeFocus) {
				local._data(
					local.cookiePrefix + FOCUS,
					this.focusNode ? this.focusNode.key : null
				);
			}
			return res;
		},
		nodeSetSelected: function(ctx, flag, callOpts) {
			var res,
				selNodes,
				tree = ctx.tree,
				node = ctx.node,
				local = this._local;

			flag = flag !== false;
			res = this._superApply(arguments);

			if (local.storeSelected) {
				if (tree.options.selectMode === 3) {
					// In selectMode 3 we only store the the selected *top* nodes.
					// De-selecting a node may also de-select some parents, so we
					// calculate the current status again
					selNodes = $.map(tree.getSelectedNodes(true), function(n) {
						return n.key;
					});
					selNodes = selNodes.join(
						ctx.options.persist.cookieDelimiter
					);
					local._data(local.cookiePrefix + SELECTED, selNodes);
				} else {
					// beforeSelect can prevent the change - flag doesn't reflect the node.selected state
					local._appendKey(SELECTED, node.key, node.selected);
				}
			}
			return res;
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.table.js' *//*!
 * jquery.fancytree.table.js
 *
 * Render tree as table (aka 'tree grid', 'table tree').
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/******************************************************************************
	 * Private functions and variables
	 */
	function _assert(cond, msg) {
		msg = msg || "";
		if (!cond) {
			$.error("Assertion failed " + msg);
		}
	}

	function insertFirstChild(referenceNode, newNode) {
		referenceNode.insertBefore(newNode, referenceNode.firstChild);
	}

	function insertSiblingAfter(referenceNode, newNode) {
		referenceNode.parentNode.insertBefore(
			newNode,
			referenceNode.nextSibling
		);
	}

	/* Show/hide all rows that are structural descendants of `parent`. */
	function setChildRowVisibility(parent, flag) {
		parent.visit(function(node) {
			var tr = node.tr;
			// currentFlag = node.hide ? false : flag; // fix for ext-filter
			if (tr) {
				tr.style.display = node.hide || !flag ? "none" : "";
			}
			if (!node.expanded) {
				return "skip";
			}
		});
	}

	/* Find node that is rendered in previous row. */
	function findPrevRowNode(node) {
		var i,
			last,
			prev,
			parent = node.parent,
			siblings = parent ? parent.children : null;

		if (siblings && siblings.length > 1 && siblings[0] !== node) {
			// use the lowest descendant of the preceeding sibling
			i = $.inArray(node, siblings);
			prev = siblings[i - 1];
			_assert(prev.tr);
			// descend to lowest child (with a <tr> tag)
			while (prev.children && prev.children.length) {
				last = prev.children[prev.children.length - 1];
				if (!last.tr) {
					break;
				}
				prev = last;
			}
		} else {
			// if there is no preceding sibling, use the direct parent
			prev = parent;
		}
		return prev;
	}

	$.ui.fancytree.registerExtension({
		name: "table",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			checkboxColumnIdx: null, // render the checkboxes into the this column index (default: nodeColumnIdx)
			indentation: 16, // indent every node level by 16px
			mergeStatusColumns: true, // display 'nodata', 'loading', 'error' centered in a single, merged TR
			nodeColumnIdx: 0, // render node expander, icon, and title to this column (default: #0)
		},
		// Overide virtual methods for this extension.
		// `this`       : is this extension object
		// `this._super`: the virtual function that was overriden (member of prev. extension or Fancytree)
		treeInit: function(ctx) {
			var i,
				n,
				$row,
				$tbody,
				tree = ctx.tree,
				opts = ctx.options,
				tableOpts = opts.table,
				$table = tree.widget.element;

			if (tableOpts.customStatus != null) {
				if (opts.renderStatusColumns == null) {
					tree.warn(
						"The 'customStatus' option is deprecated since v2.15.0. Use 'renderStatusColumns' instead."
					);
					opts.renderStatusColumns = tableOpts.customStatus;
				} else {
					$.error(
						"The 'customStatus' option is deprecated since v2.15.0. Use 'renderStatusColumns' only instead."
					);
				}
			}
			if (opts.renderStatusColumns) {
				if (opts.renderStatusColumns === true) {
					opts.renderStatusColumns = opts.renderColumns;
					// } else if( opts.renderStatusColumns === "wide" ) {
					// 	opts.renderStatusColumns = _renderStatusNodeWide;
				}
			}

			$table.addClass("fancytree-container fancytree-ext-table");
			$tbody = $table.find(">tbody");
			if (!$tbody.length) {
				// TODO: not sure if we can rely on browsers to insert missing <tbody> before <tr>s:
				if ($table.find(">tr").length) {
					$.error(
						"Expected table > tbody > tr. If you see this please open an issue."
					);
				}
				$tbody = $("<tbody>").appendTo($table);
			}

			tree.tbody = $tbody[0];

			// Prepare row templates:
			// Determine column count from table header if any
			tree.columnCount = $("thead >tr", $table)
				.last()
				.find(">th", $table).length;
			// Read TR templates from tbody if any
			$row = $tbody.children("tr").first();
			if ($row.length) {
				n = $row.children("td").length;
				if (tree.columnCount && n !== tree.columnCount) {
					tree.warn(
						"Column count mismatch between thead (" +
							tree.columnCount +
							") and tbody (" +
							n +
							"): using tbody."
					);
					tree.columnCount = n;
				}
				$row = $row.clone();
			} else {
				// Only thead is defined: create default row markup
				_assert(
					tree.columnCount >= 1,
					"Need either <thead> or <tbody> with <td> elements to determine column count."
				);
				$row = $("<tr />");
				for (i = 0; i < tree.columnCount; i++) {
					$row.append("<td />");
				}
			}
			$row.find(">td")
				.eq(tableOpts.nodeColumnIdx)
				.html("<span class='fancytree-node' />");
			if (opts.aria) {
				$row.attr("role", "row");
				$row.find("td").attr("role", "gridcell");
			}
			tree.rowFragment = document.createDocumentFragment();
			tree.rowFragment.appendChild($row.get(0));

			// // If tbody contains a second row, use this as status node template
			// $row = $tbody.children("tr").eq(1);
			// if( $row.length === 0 ) {
			// 	tree.statusRowFragment = tree.rowFragment;
			// } else {
			// 	$row = $row.clone();
			// 	tree.statusRowFragment = document.createDocumentFragment();
			// 	tree.statusRowFragment.appendChild($row.get(0));
			// }
			//
			$tbody.empty();

			// Make sure that status classes are set on the node's <tr> elements
			tree.statusClassPropName = "tr";
			tree.ariaPropName = "tr";
			this.nodeContainerAttrName = "tr";

			// #489: make sure $container is set to <table>, even if ext-dnd is listed before ext-table
			tree.$container = $table;

			this._superApply(arguments);

			// standard Fancytree created a root UL
			$(tree.rootNode.ul).remove();
			tree.rootNode.ul = null;

			// Add container to the TAB chain
			// #577: Allow to set tabindex to "0", "-1" and ""
			this.$container.attr("tabindex", opts.tabindex);
			// this.$container.attr("tabindex", opts.tabbable ? "0" : "-1");
			if (opts.aria) {
				tree.$container
					.attr("role", "treegrid")
					.attr("aria-readonly", true);
			}
		},
		nodeRemoveChildMarkup: function(ctx) {
			var node = ctx.node;
			//		node.debug("nodeRemoveChildMarkup()");
			node.visit(function(n) {
				if (n.tr) {
					$(n.tr).remove();
					n.tr = null;
				}
			});
		},
		nodeRemoveMarkup: function(ctx) {
			var node = ctx.node;
			//		node.debug("nodeRemoveMarkup()");
			if (node.tr) {
				$(node.tr).remove();
				node.tr = null;
			}
			this.nodeRemoveChildMarkup(ctx);
		},
		/* Override standard render. */
		nodeRender: function(ctx, force, deep, collapsed, _recursive) {
			var children,
				firstTr,
				i,
				l,
				newRow,
				prevNode,
				prevTr,
				subCtx,
				tree = ctx.tree,
				node = ctx.node,
				opts = ctx.options,
				isRootNode = !node.parent;

			if (tree._enableUpdate === false) {
				// $.ui.fancytree.debug("*** nodeRender _enableUpdate: false");
				return;
			}
			if (!_recursive) {
				ctx.hasCollapsedParents = node.parent && !node.parent.expanded;
			}
			// $.ui.fancytree.debug("*** nodeRender " + node + ", isRoot=" + isRootNode, "tr=" + node.tr, "hcp=" + ctx.hasCollapsedParents, "parent.tr=" + (node.parent && node.parent.tr));
			if (!isRootNode) {
				if (node.tr && force) {
					this.nodeRemoveMarkup(ctx);
				}
				if (node.tr) {
					if (force) {
						// Set icon, link, and title (normally this is only required on initial render)
						this.nodeRenderTitle(ctx); // triggers renderColumns()
					} else {
						// Update element classes according to node state
						this.nodeRenderStatus(ctx);
					}
				} else {
					if (ctx.hasCollapsedParents && !deep) {
						// #166: we assume that the parent will be (recursively) rendered
						// later anyway.
						// node.debug("nodeRender ignored due to unrendered parent");
						return;
					}
					// Create new <tr> after previous row
					// if( node.isStatusNode() ) {
					// 	newRow = tree.statusRowFragment.firstChild.cloneNode(true);
					// } else {
					newRow = tree.rowFragment.firstChild.cloneNode(true);
					// }
					prevNode = findPrevRowNode(node);
					// $.ui.fancytree.debug("*** nodeRender " + node + ": prev: " + prevNode.key);
					_assert(prevNode);
					if (collapsed === true && _recursive) {
						// hide all child rows, so we can use an animation to show it later
						newRow.style.display = "none";
					} else if (deep && ctx.hasCollapsedParents) {
						// also hide this row if deep === true but any parent is collapsed
						newRow.style.display = "none";
						//					newRow.style.color = "red";
					}
					if (prevNode.tr) {
						insertSiblingAfter(prevNode.tr, newRow);
					} else {
						_assert(
							!prevNode.parent,
							"prev. row must have a tr, or be system root"
						);
						// tree.tbody.appendChild(newRow);
						insertFirstChild(tree.tbody, newRow); // #675
					}
					node.tr = newRow;
					if (node.key && opts.generateIds) {
						node.tr.id = opts.idPrefix + node.key;
					}
					node.tr.ftnode = node;
					// if(opts.aria){
					// 	$(node.tr).attr("aria-labelledby", "ftal_" + opts.idPrefix + node.key);
					// }
					node.span = $("span.fancytree-node", node.tr).get(0);
					// Set icon, link, and title (normally this is only required on initial render)
					this.nodeRenderTitle(ctx);
					// Allow tweaking, binding, after node was created for the first time
					//				tree._triggerNodeEvent("createNode", ctx);
					if (opts.createNode) {
						opts.createNode.call(tree, { type: "createNode" }, ctx);
					}
				}
			}
			// Allow tweaking after node state was rendered
			//		tree._triggerNodeEvent("renderNode", ctx);
			if (opts.renderNode) {
				opts.renderNode.call(tree, { type: "renderNode" }, ctx);
			}
			// Visit child nodes
			// Add child markup
			children = node.children;
			if (children && (isRootNode || deep || node.expanded)) {
				for (i = 0, l = children.length; i < l; i++) {
					subCtx = $.extend({}, ctx, { node: children[i] });
					subCtx.hasCollapsedParents =
						subCtx.hasCollapsedParents || !node.expanded;
					this.nodeRender(subCtx, force, deep, collapsed, true);
				}
			}
			// Make sure, that <tr> order matches node.children order.
			if (children && !_recursive) {
				// we only have to do it once, for the root branch
				prevTr = node.tr || null;
				firstTr = tree.tbody.firstChild;
				// Iterate over all descendants
				node.visit(function(n) {
					if (n.tr) {
						if (
							!n.parent.expanded &&
							n.tr.style.display !== "none"
						) {
							// fix after a node was dropped over a collapsed
							n.tr.style.display = "none";
							setChildRowVisibility(n, false);
						}
						if (n.tr.previousSibling !== prevTr) {
							node.debug("_fixOrder: mismatch at node: " + n);
							var nextTr = prevTr ? prevTr.nextSibling : firstTr;
							tree.tbody.insertBefore(n.tr, nextTr);
						}
						prevTr = n.tr;
					}
				});
			}
			// Update element classes according to node state
			// if(!isRootNode){
			// 	this.nodeRenderStatus(ctx);
			// }
		},
		nodeRenderTitle: function(ctx, title) {
			var $cb,
				res,
				tree = ctx.tree,
				node = ctx.node,
				opts = ctx.options,
				isStatusNode = node.isStatusNode();

			res = this._super(ctx, title);

			if (node.isRootNode()) {
				return res;
			}
			// Move checkbox to custom column
			if (
				opts.checkbox &&
				!isStatusNode &&
				opts.table.checkboxColumnIdx != null
			) {
				$cb = $("span.fancytree-checkbox", node.span); //.detach();
				$(node.tr)
					.find("td")
					.eq(+opts.table.checkboxColumnIdx)
					.html($cb);
			}
			// Update element classes according to node state
			this.nodeRenderStatus(ctx);

			if (isStatusNode) {
				if (opts.renderStatusColumns) {
					// Let user code write column content
					opts.renderStatusColumns.call(
						tree,
						{ type: "renderStatusColumns" },
						ctx
					);
				} else if (opts.table.mergeStatusColumns && node.isTopLevel()) {
					$(node.tr)
						.find(">td")
						.eq(0)
						.prop("colspan", tree.columnCount)
						.text(node.title)
						.addClass("fancytree-status-merged")
						.nextAll()
						.remove();
				} // else: default rendering for status node: leave other cells empty
			} else if (opts.renderColumns) {
				opts.renderColumns.call(tree, { type: "renderColumns" }, ctx);
			}
			return res;
		},
		nodeRenderStatus: function(ctx) {
			var indent,
				node = ctx.node,
				opts = ctx.options;

			this._super(ctx);

			$(node.tr).removeClass("fancytree-node");
			// indent
			indent = (node.getLevel() - 1) * opts.table.indentation;
			if (opts.rtl) {
				$(node.span).css({ paddingRight: indent + "px" });
			} else {
				$(node.span).css({ paddingLeft: indent + "px" });
			}
		},
		/* Expand node, return Deferred.promise. */
		nodeSetExpanded: function(ctx, flag, callOpts) {
			// flag defaults to true
			flag = flag !== false;

			if ((ctx.node.expanded && flag) || (!ctx.node.expanded && !flag)) {
				// Expanded state isn't changed - just call base implementation
				return this._superApply(arguments);
			}

			var dfd = new $.Deferred(),
				subOpts = $.extend({}, callOpts, {
					noEvents: true,
					noAnimation: true,
				});

			callOpts = callOpts || {};

			function _afterExpand(ok) {
				setChildRowVisibility(ctx.node, flag);
				if (ok) {
					if (
						flag &&
						ctx.options.autoScroll &&
						!callOpts.noAnimation &&
						ctx.node.hasChildren()
					) {
						// Scroll down to last child, but keep current node visible
						ctx.node
							.getLastChild()
							.scrollIntoView(true, { topNode: ctx.node })
							.always(function() {
								if (!callOpts.noEvents) {
									ctx.tree._triggerNodeEvent(
										flag ? "expand" : "collapse",
										ctx
									);
								}
								dfd.resolveWith(ctx.node);
							});
					} else {
						if (!callOpts.noEvents) {
							ctx.tree._triggerNodeEvent(
								flag ? "expand" : "collapse",
								ctx
							);
						}
						dfd.resolveWith(ctx.node);
					}
				} else {
					if (!callOpts.noEvents) {
						ctx.tree._triggerNodeEvent(
							flag ? "expand" : "collapse",
							ctx
						);
					}
					dfd.rejectWith(ctx.node);
				}
			}
			// Call base-expand with disabled events and animation
			this._super(ctx, flag, subOpts)
				.done(function() {
					_afterExpand(true);
				})
				.fail(function() {
					_afterExpand(false);
				});
			return dfd.promise();
		},
		nodeSetStatus: function(ctx, status, message, details) {
			if (status === "ok") {
				var node = ctx.node,
					firstChild = node.children ? node.children[0] : null;
				if (firstChild && firstChild.isStatusNode()) {
					$(firstChild.tr).remove();
				}
			}
			return this._superApply(arguments);
		},
		treeClear: function(ctx) {
			this.nodeRemoveChildMarkup(this._makeHookContext(this.rootNode));
			return this._superApply(arguments);
		},
		treeDestroy: function(ctx) {
			this.$container.find("tbody").empty();
			if (this.$source) {
				this.$source.removeClass("fancytree-helper-hidden");
			}
			return this._superApply(arguments);
		},
		/*,
	treeSetFocus: function(ctx, flag) {
//	        alert("treeSetFocus" + ctx.tree.$container);
		ctx.tree.$container.focus();
		$.ui.fancytree.focusTree = ctx.tree;
	}*/
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.themeroller.js' *//*!
 * jquery.fancytree.themeroller.js
 *
 * Enable jQuery UI ThemeRoller styles.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * @see http://jqueryui.com/themeroller/
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "themeroller",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			activeClass: "ui-state-active", // Class added to active node
			// activeClass: "ui-state-highlight",
			addClass: "ui-corner-all", // Class added to all nodes
			focusClass: "ui-state-focus", // Class added to focused node
			hoverClass: "ui-state-hover", // Class added to hovered node
			selectedClass: "ui-state-highlight", // Class added to selected nodes
			// selectedClass: "ui-state-active"
		},

		treeInit: function(ctx) {
			var $el = ctx.widget.element,
				opts = ctx.options.themeroller;

			this._superApply(arguments);

			if ($el[0].nodeName === "TABLE") {
				$el.addClass("ui-widget ui-corner-all");
				$el.find(">thead tr").addClass("ui-widget-header");
				$el.find(">tbody").addClass("ui-widget-conent");
			} else {
				$el.addClass("ui-widget ui-widget-content ui-corner-all");
			}

			$el.on("mouseenter mouseleave", ".fancytree-node", function(event) {
				var node = $.ui.fancytree.getNode(event.target),
					flag = event.type === "mouseenter";

				$(node.tr ? node.tr : node.span).toggleClass(
					opts.hoverClass + " " + opts.addClass,
					flag
				);
			});
		},
		treeDestroy: function(ctx) {
			this._superApply(arguments);
			ctx.widget.element.removeClass(
				"ui-widget ui-widget-content ui-corner-all"
			);
		},
		nodeRenderStatus: function(ctx) {
			var classes = {},
				node = ctx.node,
				$el = $(node.tr ? node.tr : node.span),
				opts = ctx.options.themeroller;

			this._super(ctx);
			/*
		.ui-state-highlight: Class to be applied to highlighted or selected elements. Applies "highlight" container styles to an element and its child text, links, and icons.
		.ui-state-error: Class to be applied to error messaging container elements. Applies "error" container styles to an element and its child text, links, and icons.
		.ui-state-error-text: An additional class that applies just the error text color without background. Can be used on form labels for instance. Also applies error icon color to child icons.

		.ui-state-default: Class to be applied to clickable button-like elements. Applies "clickable default" container styles to an element and its child text, links, and icons.
		.ui-state-hover: Class to be applied on mouseover to clickable button-like elements. Applies "clickable hover" container styles to an element and its child text, links, and icons.
		.ui-state-focus: Class to be applied on keyboard focus to clickable button-like elements. Applies "clickable hover" container styles to an element and its child text, links, and icons.
		.ui-state-active: Class to be applied on mousedown to clickable button-like elements. Applies "clickable active" container styles to an element and its child text, links, and icons.
*/
			// Set ui-state-* class (handle the case that the same class is assigned
			// to different states)
			classes[opts.activeClass] = false;
			classes[opts.focusClass] = false;
			classes[opts.selectedClass] = false;
			if (node.isActive()) {
				classes[opts.activeClass] = true;
			}
			if (node.hasFocus()) {
				classes[opts.focusClass] = true;
			}
			// activeClass takes precedence before selectedClass:
			if (node.isSelected() && !node.isActive()) {
				classes[opts.selectedClass] = true;
			}
			$el.toggleClass(opts.activeClass, classes[opts.activeClass]);
			$el.toggleClass(opts.focusClass, classes[opts.focusClass]);
			$el.toggleClass(opts.selectedClass, classes[opts.selectedClass]);
			// Additional classes (e.g. 'ui-corner-all')
			$el.addClass(opts.addClass);
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure


/*! Extension 'jquery.fancytree.wide.js' *//*!
 * jquery.fancytree.wide.js
 * Support for 100% wide selection bars.
 * (Extension module for jquery.fancytree.js: https://github.com/mar10/fancytree/)
 *
 * Copyright (c) 2008-2019, Martin Wendt (https://wwWendt.de)
 *
 * Released under the MIT license
 * https://github.com/mar10/fancytree/wiki/LicenseInfo
 *
 * @version 2.34.0
 * @date 2019-12-26T14:16:19Z
 */

(function(factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery", "./jquery.fancytree"], factory);
	} else if (typeof module === "object" && module.exports) {
		// Node/CommonJS
		require("./jquery.fancytree");
		module.exports = factory(require("jquery"));
	} else {
		// Browser globals
		factory(jQuery);
	}
})(function($) {
	"use strict";

	var reNumUnit = /^([+-]?(?:\d+|\d*\.\d+))([a-z]*|%)$/; // split "1.5em" to ["1.5", "em"]

	/*******************************************************************************
	 * Private functions and variables
	 */
	// var _assert = $.ui.fancytree.assert;

	/* Calculate inner width without scrollbar */
	// function realInnerWidth($el) {
	// 	// http://blog.jquery.com/2012/08/16/jquery-1-8-box-sizing-width-csswidth-and-outerwidth/
	// //	inst.contWidth = parseFloat(this.$container.css("width"), 10);
	// 	// 'Client width without scrollbar' - 'padding'
	// 	return $el[0].clientWidth - ($el.innerWidth() -  parseFloat($el.css("width"), 10));
	// }

	/* Create a global embedded CSS style for the tree. */
	function defineHeadStyleElement(id, cssText) {
		id = "fancytree-style-" + id;
		var $headStyle = $("#" + id);

		if (!cssText) {
			$headStyle.remove();
			return null;
		}
		if (!$headStyle.length) {
			$headStyle = $("<style />")
				.attr("id", id)
				.addClass("fancytree-style")
				.prop("type", "text/css")
				.appendTo("head");
		}
		try {
			$headStyle.html(cssText);
		} catch (e) {
			// fix for IE 6-8
			$headStyle[0].styleSheet.cssText = cssText;
		}
		return $headStyle;
	}

	/* Calculate the CSS rules that indent title spans. */
	function renderLevelCss(
		containerId,
		depth,
		levelOfs,
		lineOfs,
		labelOfs,
		measureUnit
	) {
		var i,
			prefix = "#" + containerId + " span.fancytree-level-",
			rules = [];

		for (i = 0; i < depth; i++) {
			rules.push(
				prefix +
					(i + 1) +
					" span.fancytree-title { padding-left: " +
					(i * levelOfs + lineOfs) +
					measureUnit +
					"; }"
			);
		}
		// Some UI animations wrap the UL inside a DIV and set position:relative on both.
		// This breaks the left:0 and padding-left:nn settings of the title
		rules.push(
			"#" +
			containerId +
			" div.ui-effects-wrapper ul li span.fancytree-title, " +
			"#" +
			containerId +
			" li.fancytree-animating span.fancytree-title " + // #716
				"{ padding-left: " +
				labelOfs +
				measureUnit +
				"; position: static; width: auto; }"
		);
		return rules.join("\n");
	}

	// /**
	//  * [ext-wide] Recalculate the width of the selection bar after the tree container
	//  * was resized.<br>
	//  * May be called explicitly on container resize, since there is no resize event
	//  * for DIV tags.
	//  *
	//  * @alias Fancytree#wideUpdate
	//  * @requires jquery.fancytree.wide.js
	//  */
	// $.ui.fancytree._FancytreeClass.prototype.wideUpdate = function(){
	// 	var inst = this.ext.wide,
	// 		prevCw = inst.contWidth,
	// 		prevLo = inst.lineOfs;

	// 	inst.contWidth = realInnerWidth(this.$container);
	// 	// Each title is precceeded by 2 or 3 icons (16px + 3 margin)
	// 	//     + 1px title border and 3px title padding
	// 	// TODO: use code from treeInit() below
	// 	inst.lineOfs = (this.options.checkbox ? 3 : 2) * 19;
	// 	if( prevCw !== inst.contWidth || prevLo !== inst.lineOfs ) {
	// 		this.debug("wideUpdate: " + inst.contWidth);
	// 		this.visit(function(node){
	// 			node.tree._callHook("nodeRenderTitle", node);
	// 		});
	// 	}
	// };

	/*******************************************************************************
	 * Extension code
	 */
	$.ui.fancytree.registerExtension({
		name: "wide",
		version: "2.34.0",
		// Default options for this extension.
		options: {
			iconWidth: null, // Adjust this if @fancy-icon-width != "16px"
			iconSpacing: null, // Adjust this if @fancy-icon-spacing != "3px"
			labelSpacing: null, // Adjust this if padding between icon and label != "3px"
			levelOfs: null, // Adjust this if ul padding != "16px"
		},

		treeCreate: function(ctx) {
			this._superApply(arguments);
			this.$container.addClass("fancytree-ext-wide");

			var containerId,
				cssText,
				iconSpacingUnit,
				labelSpacingUnit,
				iconWidthUnit,
				levelOfsUnit,
				instOpts = ctx.options.wide,
				// css sniffing
				$dummyLI = $(
					"<li id='fancytreeTemp'><span class='fancytree-node'><span class='fancytree-icon' /><span class='fancytree-title' /></span><ul />"
				).appendTo(ctx.tree.$container),
				$dummyIcon = $dummyLI.find(".fancytree-icon"),
				$dummyUL = $dummyLI.find("ul"),
				// $dummyTitle = $dummyLI.find(".fancytree-title"),
				iconSpacing =
					instOpts.iconSpacing || $dummyIcon.css("margin-left"),
				iconWidth = instOpts.iconWidth || $dummyIcon.css("width"),
				labelSpacing = instOpts.labelSpacing || "3px",
				levelOfs = instOpts.levelOfs || $dummyUL.css("padding-left");

			$dummyLI.remove();

			iconSpacingUnit = iconSpacing.match(reNumUnit)[2];
			iconSpacing = parseFloat(iconSpacing, 10);
			labelSpacingUnit = labelSpacing.match(reNumUnit)[2];
			labelSpacing = parseFloat(labelSpacing, 10);
			iconWidthUnit = iconWidth.match(reNumUnit)[2];
			iconWidth = parseFloat(iconWidth, 10);
			levelOfsUnit = levelOfs.match(reNumUnit)[2];
			if (
				iconSpacingUnit !== iconWidthUnit ||
				levelOfsUnit !== iconWidthUnit ||
				labelSpacingUnit !== iconWidthUnit
			) {
				$.error(
					"iconWidth, iconSpacing, and levelOfs must have the same css measure unit"
				);
			}
			this._local.measureUnit = iconWidthUnit;
			this._local.levelOfs = parseFloat(levelOfs);
			this._local.lineOfs =
				(1 +
					(ctx.options.checkbox ? 1 : 0) +
					(ctx.options.icon === false ? 0 : 1)) *
					(iconWidth + iconSpacing) +
				iconSpacing;
			this._local.labelOfs = labelSpacing;
			this._local.maxDepth = 10;

			// Get/Set a unique Id on the container (if not already exists)
			containerId = this.$container.uniqueId().attr("id");
			// Generated css rules for some levels (extended on demand)
			cssText = renderLevelCss(
				containerId,
				this._local.maxDepth,
				this._local.levelOfs,
				this._local.lineOfs,
				this._local.labelOfs,
				this._local.measureUnit
			);
			defineHeadStyleElement(containerId, cssText);
		},
		treeDestroy: function(ctx) {
			// Remove generated css rules
			defineHeadStyleElement(this.$container.attr("id"), null);
			return this._superApply(arguments);
		},
		nodeRenderStatus: function(ctx) {
			var containerId,
				cssText,
				res,
				node = ctx.node,
				level = node.getLevel();

			res = this._super(ctx);
			// Generate some more level-n rules if required
			if (level > this._local.maxDepth) {
				containerId = this.$container.attr("id");
				this._local.maxDepth *= 2;
				node.debug(
					"Define global ext-wide css up to level " +
						this._local.maxDepth
				);
				cssText = renderLevelCss(
					containerId,
					this._local.maxDepth,
					this._local.levelOfs,
					this._local.lineOfs,
					this._local.labelSpacing,
					this._local.measureUnit
				);
				defineHeadStyleElement(containerId, cssText);
			}
			// Add level-n class to apply indentation padding.
			// (Setting element style would not work, since it cannot easily be
			// overriden while animations run)
			$(node.span).addClass("fancytree-level-" + level);
			return res;
		},
	});
	// Value returned by `require('jquery.fancytree..')`
	return $.ui.fancytree;
}); // End of closure

// Value returned by `require('jquery.fancytree')`
return $.ui.fancytree;
}));  // End of closure