optimize ajaxify

- do not call $.timeago twice on topic load and for widgets
- do not use toLocaleString for each timeago string, use a single
Intl.DateTimeFormat instance instead
- do not call format for empty timeago strings, ie a post that isnt
edited doesnt have a timeago string
- do not call isTouchDevice for every element
- remove app.replaceSelfLinks, this is superceded with /me route
- store references to jquery objects in navigator instead of creating
them on every scroll

public/src/ajaxify.js

@@ -202,15 +202,10 @@ $(document).ready(function () {
 	}
 
 	ajaxify.end = function (url, tpl_url) {
-		var count = 2;
-		function done() {
-			count -= 1;
-			if (count === 0) {
+		ajaxify.loadScript(tpl_url, function done() {
 			$(window).trigger('action:ajaxify.end', { url: url, tpl_url: tpl_url, title: ajaxify.data.title });
-			}
-		}
-		ajaxify.loadScript(tpl_url, done);
-		ajaxify.widgets.render(tpl_url, done);
+		});
+		ajaxify.widgets.render(tpl_url);
 
 		$(window).trigger('action:ajaxify.contentLoaded', { url: url, tpl: tpl_url });
 

public/src/app.js

@@ -12,6 +12,7 @@ app.cacheBuster = null;
 	var params = utils.params();
 	var showWelcomeMessage = !!params.loggedin;
 	var registerMessage = params.register;
+	var isTouchDevice = utils.isTouchDevice();
 
 	require(['benchpress'], function (Benchpress) {
 		Benchpress.setGlobal('config', config);
@@ -277,19 +278,20 @@ app.cacheBuster = null;
 	}
 
 	app.createUserTooltips = function (els, placement) {
+		if (isTouchDevice) {
+			return;
+		}
 		els = els || $('body');
 		els.find('.avatar,img[title].teaser-pic,img[title].user-img,div.user-icon,span.user-icon').each(function () {
-			if (!utils.isTouchDevice()) {
 			$(this).tooltip({
 				placement: placement || $(this).attr('title-placement') || 'top',
 				title: $(this).attr('title'),
 			});
-			}
 		});
 	};
 
 	app.createStatusTooltips = function () {
-		if (!utils.isTouchDevice()) {
+		if (!isTouchDevice) {
 			$('body').tooltip({
 				selector: '.fa-circle.status',
 				placement: 'top',
@@ -297,16 +299,6 @@ app.cacheBuster = null;
 		}
 	};
 
-	app.replaceSelfLinks = function (selector) {
-		selector = selector || $('a');
-		selector.each(function () {
-			var href = $(this).attr('href');
-			if (href && app.user.userslug && href.indexOf('user/_self_') !== -1) {
-				$(this).attr('href', href.replace(/user\/_self_/g, 'user/' + app.user.userslug));
-			}
-		});
-	};
-
 	app.processPage = function () {
 		highlightNavigationLink();
 
@@ -320,8 +312,6 @@ app.cacheBuster = null;
 
 		app.createStatusTooltips();
 
-		app.replaceSelfLinks();
-
 		// Scroll back to top of page
 		if (!ajaxify.isCold()) {
 			window.scrollTo(0, 0);
@@ -516,35 +506,31 @@ app.cacheBuster = null;
 
 	function createHeaderTooltips() {
 		var env = utils.findBootstrapEnvironment();
-		if (env === 'xs' || env === 'sm') {
+		if (env === 'xs' || env === 'sm' || isTouchDevice) {
 			return;
 		}
 		$('#header-menu li a[title]').each(function () {
-			if (!utils.isTouchDevice()) {
 			$(this).tooltip({
 				placement: 'bottom',
 				trigger: 'hover',
 				title: $(this).attr('title'),
 			});
-			}
 		});
 
-		if (!utils.isTouchDevice()) {
+
 		$('#search-form').parent().tooltip({
 			placement: 'bottom',
 			trigger: 'hover',
 			title: $('#search-button i').attr('title'),
 		});
-		}
 
-		if (!utils.isTouchDevice()) {
+
 		$('#user_dropdown').tooltip({
 			placement: 'bottom',
 			trigger: 'hover',
 			title: $('#user_dropdown').attr('title'),
 		});
 	}
-	}
 
 	app.handleSearch = function () {
 		var searchButton = $('#search-button');

public/src/client/topic.js

@@ -45,7 +45,7 @@ define('forum/topic', [
 
 		app.enterRoom('topic_' + tid);
 
-		posts.processPage(components.get('post'));
+		posts.onTopicPageLoad(components.get('post'));
 
 		postTools.init(tid);
 		threadTools.init(tid);

public/src/client/topic/events.js

@@ -129,7 +129,6 @@ define('forum/topic/events', [
 		editedPostEl.fadeOut(250, function () {
 			editedPostEl.html(translator.unescape(data.post.content));
 			editedPostEl.find('img:not(.not-responsive)').addClass('img-responsive');
-			app.replaceSelfLinks(editedPostEl.find('a'));
 			images.wrapImagesInLinks(editedPostEl.parent());
 			images.unloadImages(editedPostEl.parent());
 			images.loadImages();

public/src/client/topic/posts.js

@@ -205,7 +205,7 @@ define('forum/topic/posts', [
 
 			$(window).trigger('action:posts.loaded', { posts: data.posts });
 
-			Posts.processPage(html);
+			Posts.onNewPostsAddedToDom(html);
 
 			callback(html);
 		});
@@ -251,18 +251,22 @@ define('forum/topic/posts', [
 		});
 	};
 
-	Posts.processPage = function (posts) {
+	Posts.onTopicPageLoad = function (posts) {
 		images.unloadImages(posts);
 		Posts.showBottomPostBar();
 		posts.find('[component="post/content"] img:not(.not-responsive)').addClass('img-responsive');
+		addBlockquoteEllipses(posts.find('[component="post/content"] > blockquote > blockquote'));
+		hidePostToolsForDeletedPosts(posts);
+	};
+
+	Posts.onNewPostsAddedToDom = function (posts) {
+		Posts.onTopicPageLoad(posts);
+
 		app.createUserTooltips(posts);
-		app.replaceSelfLinks(posts.find('a'));
+
 		utils.addCommasToNumbers(posts.find('.formatted-number'));
 		utils.makeNumbersHumanReadable(posts.find('.human-readable-number'));
 		posts.find('.timeago').timeago();
-
-		addBlockquoteEllipses(posts.find('[component="post/content"] > blockquote > blockquote'));
-		hidePostToolsForDeletedPosts(posts);
 	};
 
 	Posts.showBottomPostBar = function () {

public/src/client/topic/replies.js

@@ -48,7 +48,7 @@ define('forum/topic/replies', ['navigator', 'components', 'forum/topic/posts'],
 				app.parseAndTranslate('topic', 'posts', tplData, function (html) {
 					$('<div>', { component: 'post/replies' }).html(html).hide().insertAfter(button)
 						.slideDown('fast');
-					posts.processPage(html);
+					posts.onNewPostsAddedToDom(html);
 					$(window).trigger('action:posts.loaded', { posts: data });
 				});
 			});
@@ -73,7 +73,7 @@ define('forum/topic/replies', ['navigator', 'components', 'forum/topic/posts'],
 			var replies = $('[component="post"][data-pid="' + post.toPid + '"] [component="post/replies"]').first();
 			if (replies.length) {
 				replies.append(html);
-				posts.processPage(html);
+				posts.onNewPostsAddedToDom(html);
 			}
 		});
 	};

public/src/modules/navigator.js

@@ -13,6 +13,12 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 
 	navigator.scrollActive = false;
 
+	var paginationBlockEl = $('.pagination-block');
+	var paginationTextEl = $('.pagination-block .pagination-text');
+	var paginationBlockMeterEl = $('.pagination-block meter');
+	var paginationBlockProgressEl = $('.pagination-block .progress-bar');
+
+
 	$(window).on('action:ajaxify.start', function () {
 		$(window).off('keydown', onKeyDown);
 	});
@@ -26,22 +32,21 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 
 		$(window).off('scroll', navigator.delayedUpdate).on('scroll', navigator.delayedUpdate);
 
-		$('.pagination-block .dropdown-menu').off('click').on('click', function (e) {
+		paginationBlockEl.find('.dropdown-menu').off('click').on('click', function (e) {
 			e.stopPropagation();
 		});
 
-		$('.pagination-block').off('shown.bs.dropdown', '.dropdown').on('shown.bs.dropdown', '.dropdown', function () {
+		paginationBlockEl.off('shown.bs.dropdown', '.dropdown').on('shown.bs.dropdown', '.dropdown', function () {
 			setTimeout(function () {
 				$('.pagination-block input').focus();
 			}, 100);
 		});
+		paginationBlockEl.find('.pageup').off('click').on('click', navigator.scrollUp);
+		paginationBlockEl.find('.pagedown').off('click').on('click', navigator.scrollDown);
+		paginationBlockEl.find('.pagetop').off('click').on('click', navigator.toTop);
+		paginationBlockEl.find('.pagebottom').off('click').on('click', navigator.toBottom);
 
-		$('.pagination-block .pageup').off('click').on('click', navigator.scrollUp);
-		$('.pagination-block .pagedown').off('click').on('click', navigator.scrollDown);
-		$('.pagination-block .pagetop').off('click').on('click', navigator.toTop);
-		$('.pagination-block .pagebottom').off('click').on('click', navigator.toBottom);
-
-		$('.pagination-block input').on('keydown', function (e) {
+		paginationBlockEl.find('input').on('keydown', function (e) {
 			if (e.which === 13) {
 				var input = $(this);
 				if (!utils.isNumber(input.val())) {
@@ -169,7 +174,7 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 			return;
 		}
 
-		$('.pagination-block').toggleClass('ready', flag);
+		paginationBlockEl.toggleClass('ready', flag);
 	}
 
 	navigator.delayedUpdate = function () {
@@ -247,10 +252,10 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 		}
 		index = index > count ? count : index;
 		var relIndex = getRelativeIndex();
-		$('.pagination-block .pagination-text').translateHtml('[[global:pagination.out_of, ' + relIndex + ', ' + count + ']]');
+		paginationTextEl.translateHtml('[[global:pagination.out_of, ' + relIndex + ', ' + count + ']]');
 		var fraction = (relIndex - 1) / (count - 1 || 1);
-		$('.pagination-block meter').val(fraction);
-		$('.pagination-block .progress-bar').width((fraction * 100) + '%');
+		paginationBlockMeterEl.val(fraction);
+		paginationBlockProgressEl.width((fraction * 100) + '%');
 	};
 
 	function getRelativeIndex() {
@@ -394,16 +399,7 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 		var done = false;
 
 		function animateScroll() {
-			var scrollTop = 0;
-			if (postHeight < viewportHeight) {
-				scrollTop = (scrollTo.offset().top - (viewportHeight / 2) + (postHeight / 2));
-			} else {
-				scrollTop = scrollTo.offset().top - navbarHeight;
-			}
-
-			$('html, body').animate({
-				scrollTop: scrollTop + 'px',
-			}, duration, function () {
+			function onAnimateComplete() {
 				if (done) {
 					// Re-enable onScroll behaviour
 					$(window).on('scroll', navigator.update);
@@ -417,7 +413,21 @@ define('navigator', ['forum/pagination', 'components'], function (pagination, co
 				highlightPost();
 				$('body').scrollTop($('body').scrollTop() - 1);
 				$('html').scrollTop($('html').scrollTop() - 1);
-			});
+			}
+
+			var scrollTop = 0;
+			if (postHeight < viewportHeight) {
+				scrollTop = (scrollTo.offset().top - (viewportHeight / 2) + (postHeight / 2));
+			} else {
+				scrollTop = scrollTo.offset().top - navbarHeight;
+			}
+			if (duration === 0) {
+				$(window).scrollTop(scrollTop);
+				return onAnimateComplete();
+			}
+			$('html, body').animate({
+				scrollTop: scrollTop + 'px',
+			}, duration, onAnimateComplete);
 		}
 
 		function highlightPost() {

public/src/overrides.js

@@ -118,17 +118,20 @@ if (typeof window !== 'undefined') {
 		}
 
 		$.timeago.settings.allowFuture = true;
-
+		var userLang = config.userLang.replace('_', '-');
+		var options = { year: 'numeric', month: 'short', day: 'numeric', hour: 'numeric', minute: 'numeric' };
+		var dtFormat = new Intl.DateTimeFormat(userLang, options);
+		var iso;
 		$.fn.timeago = function () {
 			var els = $(this);
-
 			// Convert "old" format to new format (#5108)
-			var options = { year: 'numeric', month: 'short', day: 'numeric', hour: 'numeric', minute: 'numeric' };
-			var iso;
 			els.each(function () {
 				iso = this.getAttribute('title');
+				if (!iso) {
+					return;
+				}
 				this.setAttribute('datetime', iso);
-				$(this).text(new Date(iso).toLocaleString(config.userLang.replace('_', '-'), options));
+				this.textContent = dtFormat.format(new Date(iso));
 			});
 
 			timeagoFn.apply(this, arguments);

public/src/widgets.js

@@ -3,11 +3,9 @@
 (function (ajaxify) {
 	ajaxify.widgets = {};
 
-	ajaxify.widgets.render = function (template, callback) {
-		callback = callback || function () {};
-
+	ajaxify.widgets.render = function (template) {
 		if (template.match(/^admin/)) {
-			return callback();
+			return;
 		}
 
 		var locations = Object.keys(ajaxify.data.widgets);
@@ -42,6 +40,7 @@
 			area = $('#content [widget-area="' + location + '"]');
 			if (html && area.length) {
 				area.html(html);
+				area.find('img:not(.not-responsive)').addClass('img-responsive');
 			}
 
 			if (widgetsAtLocation.length) {
@@ -49,16 +48,6 @@
 			}
 		});
 
-		var widgetAreas = $('#content [widget-area]');
-		widgetAreas.find('img:not(.not-responsive)').addClass('img-responsive');
-		widgetAreas.find('.timeago').timeago();
-		widgetAreas.find('img[title].teaser-pic,img[title].user-img').each(function () {
-			$(this).tooltip({
-				placement: 'top',
-				title: $(this).attr('title'),
-			});
-		});
 		$(window).trigger('action:widgets.loaded', {});
-		callback();
 	};
 }(ajaxify || {}));