/**
* This file Copyright (c) 2005-2008 Aptana, Inc. This program is
* dual-licensed under both the Aptana Public License and the GNU General
* Public license. You may elect to use one or the other of these licenses.
*
* This program is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. Redistribution, except as permitted by whichever of
* the GPL or APL you select, is prohibited.
*
* 1. For the GPL license (GPL), you can redistribute and/or modify this
* program under the terms of the GNU General Public License,
* Version 3, as published by the Free Software Foundation. You should
* have received a copy of the GNU General Public License, Version 3 along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Aptana provides a special exception to allow redistribution of this file
* with certain other free and open source software ("FOSS") code and certain additional terms
* pursuant to Section 7 of the GPL. You may view the exception and these
* terms on the web at http://www.aptana.com/legal/gpl/.
*
* 2. For the Aptana Public License (APL), this program and the
* accompanying materials are made available under the terms of the APL
* v1.0 which accompanies this distribution, and is available at
* http://www.aptana.com/legal/apl/.
*
* You may view the GPL, Aptana's exception and additional terms, and the
* APL in the file titled license.html at the root of the corresponding
* plugin containing this source file.
*
* Any modifications to this file must keep this entire header intact.
*/
package com.aptana.ide.scripting.events;
import java.util.ArrayList;
import java.util.Hashtable;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import com.aptana.ide.scripting.Global;
import com.aptana.ide.scripting.ScriptingEngine;
/**
* @author Kevin Lindsey
*/
public abstract class EventTarget extends ScriptableObject implements IEventTarget
{
/*
* Fields
*/
private Hashtable _events;
/*
* Constructors
*/
/**
* Create a new instance of EventTarget
*/
public EventTarget()
{
String[] names = new String[] { "addEventListener", "removeEventListener" }; //$NON-NLS-1$ //$NON-NLS-2$
this.defineFunctionProperties(names, EventTarget.class, READONLY | PERMANENT);
}
/*
* Methods
*/
/**
* @see com.aptana.ide.scripting.events.IEventTarget#fireEventListeners(com.aptana.ide.scripting.events.Event)
*/
public void fireEventListeners(Event event)
{
this.fireEventListeners(event.getType(), new Object[] { event });
}
/**
* @see com.aptana.ide.scripting.events.IEventTarget#fireEventListeners(java.lang.String, java.lang.Object[])
*/
public void fireEventListeners(String eventType, Object[] args)
{
if (this._events != null && this._events.containsKey(eventType))
{
ArrayList handlers = (ArrayList) _events.get(eventType);
for (int i = 0; i < handlers.size(); i++)
{
Object eventHandler = handlers.get(i);
if (eventHandler instanceof Function)
{
Function f = (Function) eventHandler;
Scriptable scope = f.getParentScope();
String ID = Context.toString(scope.get(Global.idPropertyName, scope));
ScriptingEngine.getInstance().fireCallback(ID, eventHandler, args);
}
}
}
}
/**
* @see com.aptana.ide.scripting.events.IEventTarget#addEventListener(java.lang.String, java.lang.Object)
*/
public void addEventListener(String eventType, Object eventHandler)
{
if (this._events == null)
{
this._events = new Hashtable();
}
if (this._events.containsKey(eventType) == false)
{
this._events.put(eventType, new ArrayList());
}
ArrayList handlers = (ArrayList) this._events.get(eventType);
handlers.add(eventHandler);
}
/**
* @see com.aptana.ide.scripting.events.IEventTarget#removeEventListener(java.lang.String, java.lang.Object)
*/
public void removeEventListener(String eventType, Object eventHandler)
{
if (this._events != null)
{
if (this._events.containsKey(eventType))
{
ArrayList handlers = (ArrayList) this._events.get(eventType);
handlers.remove(eventHandler);
}
}
}
}