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