moved Protocol and NotificationCenter to Lib/Utilities

app/Lib/Utilities/NotificationCenter.js

@@ -0,0 +1,58 @@
+define([
+],
+
+function () {
+
+    function NotificationCenter () {
+        this.topics = {};
+        this.subUid = -1;
+    }
+
+    NotificationCenter.prototype.trigger = function (topic /*, arguments*/) {
+
+        if (!this.topics[topic]) {
+            throw "No such topic " + topic + ". Could not trigger. arguments: " + arguments.join;
+        }
+
+        var args = Array.prototype.slice.call(arguments, 1);
+        var subscribers = this.topics[topic];
+        var len = subscribers ? subscribers.length : 0;
+
+        while (len--) {
+            var subscriber = subscribers[len];
+            subscriber.func.apply(subscriber.context, args);
+        }
+    }
+
+    NotificationCenter.prototype.on = function (topic, func, context) {
+        
+        if (!this.topics[topic]) {
+            this.topics[topic] = [];
+        }
+
+        var token = ( ++this.subUid ).toString();
+        this.topics[topic].push({
+            token: token,
+            func: func,
+            context: context
+        });
+
+        return token;
+    }
+
+    NotificationCenter.prototype.off = function (token) {
+
+        for(var m in this.topics) {
+            if (this.topics[m]) {
+                for(var i = 0, j = this.topics[m].length; i < j; i++) {
+                    if (this.topics[m][i].token === token) {
+                        this.topics[m].splice(i, 1);
+                        return token;
+                    }
+                }
+            }
+        }
+    }
+
+    return new NotificationCenter(); // making it singletone
+});