Partial rendering

client/js/chat.js

@@ -1,10 +1,15 @@
 $(function() {
 	var socket = io.connect("");
-	socket.on("event", function(data) {
+
-		render(data);
+	$.each([
-		
+		"networks",
-		// Debug
+		"channels",
-		console.log(data);
+		"user",
+		"messages"
+	], function(i, type) {
+		socket.on(type, function(data) {
+			render(type, data);
+		});
 	});
 
 	var chat = $("#chat");
@@ -16,29 +21,48 @@ $(function() {
 	var messages = $("#messages").html();
 	var users = $("#users").html()
 
-	function render(data) {
+	function render(type, data) {
-		chat.html("");
+		var target;
-		var partials = {
+		if (typeof data.target !== "undefined") {
-			users: users,
+			target = $(".window[data-id='" + data.target + "']");
-			messages: messages
+		}
-		};
-		data.forEach(function(network) {
-			chat.append(Mustache.render(channels, network, partials));
-		});
-		sidebar.html(
-			Mustache.render(networks, {
-				networks: data
-			})
-		);
 
-		chat.find(".messages").sticky().scrollToBottom();
+		switch (type) {
-		chat.find(".window")
+		case "networks":
-			// Sort windows by `data-id` value.
+			var partials = {
-			.sort(function(a, b) { return ($(a).data("id") - $(b).data("id")); })
+				users: users,
-			.last()
+				messages: messages
-			.bringToTop()
+			};
-			.find(".input")
+			chat.html("");
-				.focus();
+			data.forEach(function(network) {
+				chat.append(Mustache.render(channels, network, partials));
+			});
+			sidebar.html(
+				Mustache.render(networks, {
+					networks: data
+				})
+			);
+
+			chat.find(".messages").sticky().scrollToBottom();
+			chat.find(".window")
+				// Sort windows by `data-id` value.
+				.sort(function(a, b) { return ($(a).data("id") - $(b).data("id")); })
+				.last()
+				.bringToTop()
+				.find(".input")
+					.focus();
+			break;
+
+		case "users":
+			target = target.find(".users");
+			target.html(Mustache.render(users, {users: data.data}));
+			break;
+
+		case "messages":
+			target = target.find(".messages");
+			target.append(Mustache.render(messages, {messages: data.data}));
+			break;
+		}
 	}
 
 	chat.on("submit", "form", function() {

js/chat.js

@@ -0,0 +1,112 @@
+$(function() {
+	var socket = io.connect("");
+	socket.on("event", function(data) {
+		render(data);
+		
+		// Debug
+		console.log(data);
+	});
+
+	var chat = $("#chat");
+	var sidebar = $("#sidebar");
+	
+	// Templates
+	var networks = $("#networks").html();
+	var channels = $("#channels").html();
+	var messages = $("#messages").html();
+	var users = $("#users").html()
+
+	function render(data) {
+		chat.html("");
+		var partials = {
+			users: users,
+			messages: messages
+		};
+		data.forEach(function(network) {
+			chat.append(Mustache.render(channels, network, partials));
+		});
+		sidebar.html(
+			Mustache.render(networks, {
+				networks: data
+			})
+		);
+
+		chat.find(".messages").sticky().scrollToBottom();
+		chat.find(".window")
+			// Sort windows by `data-id` value.
+			.sort(function(a, b) { return ($(a).data("id") - $(b).data("id")); })
+			.last()
+			.bringToTop()
+			.find(".input")
+				.focus();
+	}
+
+	chat.on("submit", "form", function() {
+		var input = $(this).find(".input");
+		var text = input.val();
+		if (text != "") {
+			input.val("");
+			socket.emit("input", {
+				id: input.data("target"),
+				text: text
+			});
+		}
+	});
+
+	sidebar.on("click", ".channel", function() {
+		chat.find(".window[data-id='" + $(this).data("id") + "']")
+			.bringToTop();
+	});
+});
+
+(function($) {
+	var highest = 1;
+	$.fn.bringToTop = function() {
+		return this
+			.css('z-index', highest++)
+			.find("input")
+			.focus();
+	};
+})(jQuery);
+
+// Sticky plugin
+// https://github.com/erming/sticky
+
+(function($) {
+	var append = $.fn.append;
+	$.fn.append = function() {
+		return append.apply(this, arguments).trigger("append");
+	};
+
+	$.fn.sticky = function() {
+		var self = this;
+		if (self.size() > 1) {
+			return self.each(function() {
+				$(this).sticky();
+			});
+		}
+
+		var sticky = false;
+		self.on("scroll", function() {
+			sticky = self.isScrollAtBottom();
+		});
+		self.trigger("scroll");
+		self.on("append", function() {
+			if (sticky) {
+				self.scrollToBottom();
+			}
+		});
+
+		return this;
+	};
+
+	$.fn.scrollToBottom = function() {
+		this.scrollTop(1e10);
+	};
+
+	$.fn.isScrollAtBottom = function() {
+		if ((this.scrollTop() + this.outerHeight()) >= this.prop("scrollHeight")) {
+			return true;
+		}
+	};
+})(jQuery);

lib/models.js

@@ -45,9 +45,14 @@ models.Channel = Backbone.Model.extend({
 		this.set("users", new models.UserCollection());
 		this.get("users").on(
 			"all",
-			function(e) {
+			function(type, model) {
 				// Bubble event
-				this.trigger("user", this);
+				this.trigger(
+					"users", {
+						target: this.get("id"),
+						data: model
+					}
+				);
 			},
 			this
 		);
@@ -55,9 +60,14 @@ models.Channel = Backbone.Model.extend({
 		this.set("messages", new models.MessageCollection());
 		this.get("messages").on(
 			"add",
-			function() {
+			function(type, model) {
 				// Bubble event
-				this.trigger("message", this);
+				this.trigger(
+					"messages", {
+						target: this.get("id"),
+						data: model.last()
+					}
+				);
 			},
 			this
 		);
@@ -82,9 +92,21 @@ models.Network = Backbone.Model.extend({
 		this.set("channels", new models.ChannelCollection());
 		this.get("channels").on(
 			"all",
-			function(type) {
+			function(type, model) {
-				// Bubble event
+				if ([
-				this.trigger(type == "user" || type == "message" ? type : "channel", this);
+					"users",
+					"messages"
+				].indexOf(type) != -1) {
+					this.trigger(type, model);
+				} else {
+					// Bubble event
+					this.trigger(
+						"channels", {
+							target: this.get("id"),
+							data: model
+						}
+					);
+				}
 			},
 			this
 		);

lib/server.js

@@ -19,18 +19,25 @@ Server.prototype.listen = function(port) {
 
 	this.networks.on(
 		"all",
-		function(type) {
+		function(type, data) {
-			self.sockets.emit("event", self.networks);
+			if ([
+				"users",
+				"messages"
+			].indexOf(type) != -1) {
+				self.sockets.emit(type, data);
+			} else {
+				self.sockets.emit("networks", self.networks);
+			}
 
 			// Debug
-			console.log(type);
+			console.log(type + ": " + data);
 		}
 	);
 
 	this.sockets = io.listen(http, {log: false}).sockets;
 	this.sockets.on("connection", function(socket) {
 		socket.emit(
-			"event",
+			"networks",
 			self.networks
 		);
 		socket.on(
@@ -61,6 +68,16 @@ function handleInput(input) {
 		);
 		break;
 
+	case "JOIN":
+		if (!argv[1]) {
+			return;
+		}
+		var channels = this.networks.at(0).get("channels");
+		channels.add(new models.Channel({
+			name: argv[1]
+		}));
+		break;
+
 	case "CONNECT":
 		if (!argv[1]) {
 			return;