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/*
* FCKeditor - The text editor for Internet - http://www.fckeditor.net
* Copyright (C) 2003-2009 Frederico Caldeira Knabben
*
* == BEGIN LICENSE ==
*
* Licensed under the terms of any of the following licenses at your
* choice:
*
* - GNU General Public License Version 2 or later (the "GPL")
* http://www.gnu.org/licenses/gpl.html
*
* - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
* http://www.gnu.org/licenses/lgpl.html
*
* - Mozilla Public License Version 1.1 or later (the "MPL")
* http://www.mozilla.org/MPL/MPL-1.1.html
*
* == END LICENSE ==
*
* FCKEvents Class: used to handle events is a advanced way.
*/
var FCKEvents = function( eventsOwner )
{
this.Owner = eventsOwner ;
this._RegisteredEvents = new Object() ;
}
FCKEvents.prototype.AttachEvent = function( eventName, functionPointer )
{
var aTargets ;
if ( !( aTargets = this._RegisteredEvents[ eventName ] ) )
this._RegisteredEvents[ eventName ] = [ functionPointer ] ;
else
{
// Check that the event handler isn't already registered with the same listener
// It doesn't detect function pointers belonging to an object (at least in Gecko)
if ( aTargets.IndexOf( functionPointer ) == -1 )
aTargets.push( functionPointer ) ;
}
}
FCKEvents.prototype.FireEvent = function( eventName, params )
{
var bReturnValue = true ;
var oCalls = this._RegisteredEvents[ eventName ] ;
if ( oCalls )
{
for ( var i = 0 ; i < oCalls.length ; i++ )
{
try
{
bReturnValue = ( oCalls[ i ]( this.Owner, params ) && bReturnValue ) ;
}
catch(e)
{
// Ignore the following error. It may happen if pointing to a
// script not anymore available (#934):
// -2146823277 = Can't execute code from a freed script
if ( e.number != -2146823277 )
throw e ;
}
}
}
return bReturnValue ;
}
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