ext based Deluge.Events

deluge/ui/web/js/Deluge.Events.js

@@ -0,0 +1,83 @@
+/**
+ *
+ * @script Deluge.Events.js
+ *
+ * (C) Damien Churchill 2009 <damoxc@gmail.com>
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, write to:
+ *		The Free Software Foundation, Inc.,
+ *		51 Franklin Street, Fifth Floor
+ *		Boston, MA  02110-1301, USA.
+ **
+ * @class Deluge.Events
+ * <p>Class for holding global events that occur within the UI.</p>
+ * @singleton
+ */
+Deluge.Events = {
+	
+	// private
+	__events: {},
+	
+	/**
+	 * Fires an event, calling any listening event handlers and passing the
+	 * given arguments.
+	 * @param {String} name The name of the event to call.
+	 * @param eventArg1 (optional)
+	 * @param eventArg2 (optional)...
+	 */
+	fire: function() {
+		var args = [];
+		Ext.each(arguments, function(arg) {
+			args.push(arg);
+		});
+		
+		var eventName = args.shift();
+		if (!this.__events[eventName]) return;
+		
+		var eventArgs = arguments;
+		Ext.each(this.__events[eventName], function(cb) {
+			try {
+				cb.fn.apply(cb.scope || this, eventArgs);
+			} catch (e) {
+				alert(e);
+			}
+		});
+	},
+	
+	/**
+	 * Attachs an event listener.
+	 *
+	 */
+	on: function(eventName, fn, scope) {
+		var e = this.__events[eventName] || new Array();
+		e.push({
+			'fn': fn,
+			'scope': scope
+		});
+		this.__events[eventName] = e;
+	},
+	
+	/**
+	 * Removes an event listener.
+	 */
+	removeListener: function(eventName, fn) {
+		if (!this.__events[eventName]) return;
+		this.__events[eventName].remove(fn);
+	},
+	
+	/**
+	 * Alias to removeListener
+	 *
+	 */
+	un: this.removeListener
+};