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+/**
+ * Deluge.EventsManager.js
+ *
+ * Copyright (c) Damien Churchill 2009-2010 <damoxc@gmail.com>
+ *
+ * This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
+ * the additional special exception to link portions of this program with the OpenSSL library.
+ * See LICENSE for more details.
+ */
+
+/**
+ * @class Deluge.EventsManager
+ * @extends Ext.util.Observable
+ * <p>Deluge.EventsManager is instantated as <tt>deluge.events</tt> and can be used by components of the UI to fire global events</p>
+ * Class for holding global events that occur within the UI.
+ */
+Deluge.EventsManager = Ext.extend(Ext.util.Observable, {
+ constructor: function () {
+ this.toRegister = [];
+ this.on('login', this.onLogin, this);
+ Deluge.EventsManager.superclass.constructor.call(this);
+ },
+
+ /**
+ * Append an event handler to this object.
+ */
+ addListener: function (eventName, fn, scope, o) {
+ this.addEvents(eventName);
+ if (/[A-Z]/.test(eventName.substring(0, 1))) {
+ if (!deluge.client) {
+ this.toRegister.push(eventName);
+ } else {
+ deluge.client.web.register_event_listener(eventName);
+ }
+ }
+ Deluge.EventsManager.superclass.addListener.call(
+ this,
+ eventName,
+ fn,
+ scope,
+ o
+ );
+ },
+
+ getEvents: function () {
+ deluge.client.web.get_events({
+ success: this.onGetEventsSuccess,
+ failure: this.onGetEventsFailure,
+ scope: this,
+ });
+ },
+
+ /**
+ * Starts the EventsManagerManager checking for events.
+ */
+ start: function () {
+ Ext.each(this.toRegister, function (eventName) {
+ deluge.client.web.register_event_listener(eventName);
+ });
+ this.running = true;
+ this.errorCount = 0;
+ this.getEvents();
+ },
+
+ /**
+ * Stops the EventsManagerManager checking for events.
+ */
+ stop: function () {
+ this.running = false;
+ },
+
+ // private
+ onLogin: function () {
+ this.start();
+ },
+
+ onGetEventsSuccess: function (events) {
+ if (!this.running) return;
+ if (events) {
+ Ext.each(
+ events,
+ function (event) {
+ var name = event[0],
+ args = event[1];
+ args.splice(0, 0, name);
+ this.fireEvent.apply(this, args);
+ },
+ this
+ );
+ }
+ this.getEvents();
+ },
+
+ // private
+ onGetEventsFailure: function (result, error) {
+ // the request timed out or we had a communication failure
+ if (!this.running) return;
+ if (!error.isTimeout && this.errorCount++ >= 3) {
+ this.stop();
+ return;
+ }
+ this.getEvents();
+ },
+});
+
+/**
+ * Appends an event handler to this object (shorthand for {@link #addListener})
+ * @method
+ */
+Deluge.EventsManager.prototype.on = Deluge.EventsManager.prototype.addListener;
+
+/**
+ * Fires the specified event with the passed parameters (minus the
+ * event name).
+ * @method
+ */
+Deluge.EventsManager.prototype.fire = Deluge.EventsManager.prototype.fireEvent;
+deluge.events = new Deluge.EventsManager();