closes #1139

public/language/en_GB/modules.json

@@ -2,5 +2,6 @@
 	"chat.chatting_with": "Chat with <span id=\"chat-with-name\"></span>",
 	"chat.placeholder": "type chat message here, press enter to send",
 	"chat.send": "Send",
-	"chat.no_active": "You have no active chats."
+	"chat.no_active": "You have no active chats.",
+	"chat.user_typing": "%1 is typing ..."
 }

public/src/modules/chat.js

@@ -84,6 +84,20 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 				sounds.play('chat-incoming');
 			}
 		});
+
+		socket.on('event:chats.userStartTyping', function(withUid) {
+			var modal = module.getModal(withUid);
+			var chatContent = modal.find('#chat-content');
+			modal.find('.user-typing')
+				.removeClass('hide')
+				.appendTo(chatContent);
+			scrollToBottom(chatContent);
+		});
+
+		socket.on('event:chats.userStopTyping', function(withUid) {
+			var modal = module.getModal(withUid);
+			modal.find('.user-typing').addClass('hide');
+		});
 	};
 
 	module.bringModalToTop = function(chatModal) {
@@ -152,12 +166,8 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 
 				chatModal.find('#chat-with-name').html(username);
 
-				chatModal.find('#chat-close-btn').on('click', function(e) {
-					clearInterval(chatModal.intervalId);
-					chatModal.intervalId = 0;
-					chatModal.remove();
-					chatModal.data('modal', null);
-					taskbar.discard('chat', uuid);
+				chatModal.find('#chat-close-btn').on('click', function() {
+					module.close(chatModal);
 				});
 
 				chatModal.on('click', function(e) {
@@ -170,6 +180,11 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 					checkOnlineStatus(chatModal);
 				});
 
+				translator.translate('[[modules:chat.user_typing, ' + username + ']]', function(translated) {
+					chatModal.find('.user-typing').text(translated);
+				});
+
+
 				taskbar.push('chat', chatModal.attr('UUID'), {
 					title:'<i class="fa fa-comment"></i> ' + username,
 					state: ''
@@ -180,6 +195,15 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 		});
 	};
 
+	module.close = function(chatModal) {
+		clearInterval(chatModal.intervalId);
+		chatModal.intervalId = 0;
+		chatModal.remove();
+		chatModal.data('modal', null);
+		taskbar.discard('chat', chatModal.attr('UUID'));
+		notifyStopTyping(chatModal.touid);
+	};
+
 	module.center = function(chatModal) {
 		chatModal.css("left", Math.max(0, (($(window).width() - $(chatModal).outerWidth()) / 2) + $(window).scrollLeft()) + "px");
 		chatModal.css("top", "0px");
@@ -204,8 +228,13 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 		taskbar.minimize('chat', uuid);
 		clearInterval(chatModal.intervalId);
 		chatModal.intervalId = 0;
+		notifyStopTyping(chatModal.touid);
 	};
 
+	function notifyStopTyping(touid) {
+		socket.emit('modules.chats.userStopTyping', {touid:touid, fromUid: app.uid});
+	}
+
 	function getChatMessages(chatModal, callback) {
 		socket.emit('modules.chats.get', {touid:chatModal.touid}, function(err, messages) {
 			for(var i = 0; i<messages.length; ++i) {
@@ -216,12 +245,21 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 	}
 
 	function addSendHandler(chatModal) {
-		chatModal.find('#chat-message-input').off('keypress').on('keypress', function(e) {
+		var input = chatModal.find('#chat-message-input');
+		input.off('keypress').on('keypress', function(e) {
 			if(e.which === 13) {
 				sendMessage(chatModal);
 			}
 		});
 
+		input.off('keyup').on('keyup', function() {
+			if ($(this).val()) {
+				socket.emit('modules.chats.userStartTyping', {touid:chatModal.touid, fromUid: app.uid});
+			} else {
+				notifyStopTyping(chatModal.touid);
+			}
+		});
+
 		chatModal.find('#chat-message-send-btn').off('click').on('click', function(e){
 			sendMessage(chatModal);
 			return false;
@@ -235,6 +273,7 @@ define(['taskbar', 'string', 'sounds'], function(taskbar, S, sounds) {
 			socket.emit('modules.chats.send', {touid:chatModal.touid, message:msg});
 			chatModal.find('#chat-message-input').val('');
 			sounds.play('chat-outgoing');
+			notifyStopTyping(chatModal.touid);
 		}
 	}
 

public/src/modules/sounds.js

@@ -42,7 +42,9 @@ define(['buzz'], function(buzz) {
 			return callback();
 		}
 
+		if (files && files[fileName]) {
 			loadedSounds[fileName] = new buzz.sound(files[fileName]);
+		}
 		callback();
 	}
 

src/socket.io/modules.js

@@ -208,6 +208,23 @@ function sendChatNotification(fromuid, touid, username) {
 	}
 }
 
+SocketModules.chats.userStartTyping = function(socket, data, callback) {
+	sendTypingNotification('event:chats.userStartTyping', socket, data, callback);
+};
+
+SocketModules.chats.userStopTyping = function(socket, data, callback) {
+	sendTypingNotification('event:chats.userStopTyping', socket, data, callback);
+};
+
+function sendTypingNotification(event, socket, data, callback) {
+	if (!socket.uid || !data) {
+		return;
+	}
+	server.getUserSockets(data.touid).forEach(function(socket) {
+		socket.emit(event, data.fromUid);
+	});
+}
+
 SocketModules.chats.list = function(socket, data, callback) {
 	Messaging.getRecentChats(socket.uid, callback);
 };