Use strict mode

src/js/event.js

@@ -1,136 +1,138 @@
-
-/**
- * @namespace olexp.event
- */
-olexp.event = olexp.event || {};
-
-//==================================================
-// Event Handler
-//--------------------------------------------------
-(function(olexp) {
-
-    /**
-     * Handles listening for registered events
-     * @param {object} listeners Initial listeners
-     * @private
-     */
-    var Event = function(listeners)
-    {
-
-        // ==================================================
-        // Collection of event listeners that are keyed by
-        // the event name and valued by an array of callback
-        // functions (e.g., {'name': [function1, function2]})
-        // --------------------------------------------------
-        this.listeners = $.extend({}, listeners);
-
-    };
-
-    /**
-     * Add listener to event type
-     * @memberOf Event.prototype
-     * @param {string} type The event type.
-     * @param {function} listener The listener function.
-     * @param {object} opt_this The object to use as this in listener.
-     * @private
-     * @warning If event type is not already registered then listener is not. 
-     */
-    Event.prototype.on = function(type, listener, opt_this)
-    {
-
-        if (!(type in this.listeners)) return;
-
-        var callback = listener;
-        if (typeof opt_this !== 'undefined') callback = listener.bind(opt_this);
-        this.listeners[type].push(callback);
-
-    };
-
-    /**
-     * Register event to which to listen
-     * @memberOf Event.prototype
-     * @param {string} type The event type.
-     * @private
-     * @warning If event type is already registered then nothing is done.
-     */
-    Event.prototype.register = function(type)
-    {
-
-        if (type in this.listeners) return;
-        this.listeners[type] = [];
-
-    };
-
-    /**
-     * Trigger event and call listeners
-     * @memberOf Event.prototype
-     * @param {string} type The event type.
-     * @private
-     */
-    Event.prototype.trigger = function()
-    {
-        var args = Array.prototype.slice.call(arguments);
-        var type = args.shift();
-        if (!(type in this.listeners)) return;
-
-        // Call listeners with remaining arguments
-        for (var i = 0; i < this.listeners[type].length; i++)
-        {
-            this.listeners[type][i].apply(this, args);
-        }
-    };
-
-    /**
-     * Unregister event to which to listen
-     * @memberOf Event.prototype
-     * @param {string} type The event type.
-     * @private
-     * @returns Listeners registered with given type
-     * @warning If event type is already registered then nothing is done.
-     */
-    Event.prototype.unregister = function(type)
-    {
-
-        if (!(type in this.listeners)) return;
-        var listeners = this.listeners[type];
-        delete this.listeners[type];
-        return listeners;
-
-    };
-
-    /**
-     * Remove listener from event type
-     * @memberOf Event.prototype
-     * @param {string} type The event type.
-     * @param {function} listener The listener function.
-     * @param {object} opt_this The object to use as this in listener.
-     * @private
-     */
-    Event.prototype.off = function(type, listener, opt_this)
-    {
-
-        if (!(type in this.listeners)) return;
-
-        var callback = listener;
-        if (typeof opt_this !== 'undefined') callback = listener.bind(opt_this);
-        var index = this.listeners[type].indexOf(callback);
-        if (index > -1) this.listeners[type].splice(index, 1);
-
-    };
-
-    /**
-     * Event handler
-     * @memberOf olexp.event
-     * @param {object} listeners Initial listeners
-     * @public
-     */
-    olexp.event.Event = function(listeners) {
-
-        var handler = new Event(listeners);
-        return handler;
-
-    };
-
-    return olexp;
-
-}(olexp || {}));
+
+/**
+ * @namespace olexp.event
+ */
+olexp.event = olexp.event || {};
+
+//==================================================
+// Event Handler
+//--------------------------------------------------
+(function(olexp) {
+
+    "use strict";
+
+    /**
+     * Handles listening for registered events
+     * @param {object} listeners Initial listeners
+     * @private
+     */
+    var Event = function(listeners)
+    {
+
+        // ==================================================
+        // Collection of event listeners that are keyed by
+        // the event name and valued by an array of callback
+        // functions (e.g., {'name': [function1, function2]})
+        // --------------------------------------------------
+        this.listeners = $.extend({}, listeners);
+
+    };
+
+    /**
+     * Add listener to event type
+     * @memberOf Event.prototype
+     * @param {string} type The event type.
+     * @param {function} listener The listener function.
+     * @param {object} opt_this The object to use as this in listener.
+     * @private
+     * @warning If event type is not already registered then listener is not. 
+     */
+    Event.prototype.on = function(type, listener, opt_this)
+    {
+
+        if (!(type in this.listeners)) return;
+
+        var callback = listener;
+        if (typeof opt_this !== 'undefined') callback = listener.bind(opt_this);
+        this.listeners[type].push(callback);
+
+    };
+
+    /**
+     * Register event to which to listen
+     * @memberOf Event.prototype
+     * @param {string} type The event type.
+     * @private
+     * @warning If event type is already registered then nothing is done.
+     */
+    Event.prototype.register = function(type)
+    {
+
+        if (type in this.listeners) return;
+        this.listeners[type] = [];
+
+    };
+
+    /**
+     * Trigger event and call listeners
+     * @memberOf Event.prototype
+     * @param {string} type The event type.
+     * @private
+     */
+    Event.prototype.trigger = function()
+    {
+        var args = Array.prototype.slice.call(arguments);
+        var type = args.shift();
+        if (!(type in this.listeners)) return;
+
+        // Call listeners with remaining arguments
+        for (var i = 0; i < this.listeners[type].length; i++)
+        {
+            this.listeners[type][i].apply(this, args);
+        }
+    };
+
+    /**
+     * Unregister event to which to listen
+     * @memberOf Event.prototype
+     * @param {string} type The event type.
+     * @private
+     * @returns Listeners registered with given type
+     * @warning If event type is already registered then nothing is done.
+     */
+    Event.prototype.unregister = function(type)
+    {
+
+        if (!(type in this.listeners)) return;
+        var listeners = this.listeners[type];
+        delete this.listeners[type];
+        return listeners;
+
+    };
+
+    /**
+     * Remove listener from event type
+     * @memberOf Event.prototype
+     * @param {string} type The event type.
+     * @param {function} listener The listener function.
+     * @param {object} opt_this The object to use as this in listener.
+     * @private
+     */
+    Event.prototype.off = function(type, listener, opt_this)
+    {
+
+        if (!(type in this.listeners)) return;
+
+        var callback = listener;
+        if (typeof opt_this !== 'undefined') callback = listener.bind(opt_this);
+        var index = this.listeners[type].indexOf(callback);
+        if (index > -1) this.listeners[type].splice(index, 1);
+
+    };
+
+    /**
+     * Event handler
+     * @memberOf olexp.event
+     * @param {object} listeners Initial listeners
+     * @public
+     */
+    olexp.event.Event = function(listeners) {
+
+        var handler = new Event(listeners);
+        return handler;
+
+    };
+
+    return olexp;
+
+}(olexp || {}));