1/*
2 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
3 * Copyright (C) 2003-2007 Frederico Caldeira Knabben
4 *
5 * == BEGIN LICENSE ==
6 *
7 * Licensed under the terms of any of the following licenses at your
8 * choice:
9 *
10 *  - GNU General Public License Version 2 or later (the "GPL")
11 *    http://www.gnu.org/licenses/gpl.html
12 *
13 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
14 *    http://www.gnu.org/licenses/lgpl.html
15 *
16 *  - Mozilla Public License Version 1.1 or later (the "MPL")
17 *    http://www.mozilla.org/MPL/MPL-1.1.html
18 *
19 * == END LICENSE ==
20 *
21 * FCKEvents Class: used to handle events is a advanced way.
22 */
23
24var FCKEvents = function( eventsOwner )
25{
26	this.Owner = eventsOwner ;
27	this._RegisteredEvents = new Object() ;
28}
29
30FCKEvents.prototype.AttachEvent = function( eventName, functionPointer )
31{
32	var aTargets ;
33
34	if ( !( aTargets = this._RegisteredEvents[ eventName ] ) )
35		this._RegisteredEvents[ eventName ] = [ functionPointer ] ;
36	else
37		aTargets.push( functionPointer ) ;
38}
39
40FCKEvents.prototype.FireEvent = function( eventName, params )
41{
42	var bReturnValue = true ;
43
44	var oCalls = this._RegisteredEvents[ eventName ] ;
45
46	if ( oCalls )
47	{
48		for ( var i = 0 ; i < oCalls.length ; i++ )
49		{
50			try
51			{
52				bReturnValue = ( oCalls[ i ]( this.Owner, params ) && bReturnValue ) ;
53			}
54			catch(e)
55			{
56				// Ignore the following error. It may happen if pointing to a
57				// script not anymore available (#934):
58				// -2146823277 = Can't execute code from a freed script
59				if ( e.number != -2146823277 )
60					throw e ;
61			}
62		}
63	}
64
65	return bReturnValue ;
66}
67