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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();
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