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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package com.sun.star.wizards.ui.event;
import com.sun.star.awt.XControl;
import com.sun.star.lang.EventObject;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.wizards.common.Helper;
import java.lang.reflect.InvocationTargetException;
import java.util.Hashtable;
/**
* This class is a base class for listener classes.
* It uses a hashtable to map between a ComponentName, EventName and a MethodInvokation Object.
* To use this class do the following:<br/>
* <list>
* <li>Write a subclass which implements the needed Listener(s).</li>
* in the even methods, use invoke(...).
* <li>When instanciating the component, register the subclass as the event listener.</li>
* <li>Write the methods which should be performed when the event occures.</li>
* <li>call the "add" method, to define a component-event-action mapping.</li>
* </list>
* @author rpiterman
*/
public class AbstractListener
{
private Hashtable mHashtable = new Hashtable();
/** Creates a new instance of AbstractListener */
public AbstractListener()
{
}
public void add(String componentName, String eventName, String methodName, Object target)
{
try
{
add(componentName, eventName, new MethodInvocation(methodName, target));
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
public void add(String componentName, String eventName, MethodInvocation mi)
{
mHashtable.put(componentName + eventName, mi);
}
public MethodInvocation get(String componentName, String eventName)
{
return (MethodInvocation) mHashtable.get(componentName + eventName);
}
public Object invoke(String componentName, String eventName, Object param)
{
try
{
MethodInvocation mi = get(componentName, eventName);
if (mi != null)
{
return mi.invoke(param);
}
else
{
return null;
}
}
catch (InvocationTargetException ite)
{
System.out.println("=======================================================");
System.out.println("=== Note: An Exception was thrown which should have ===");
System.out.println("=== caused a crash. I caught it. Please report this ===");
System.out.println("=== to openoffice.org ===");
System.out.println("=======================================================");
ite.printStackTrace();
}
catch (IllegalAccessException iae)
{
iae.printStackTrace();
}
catch (Exception ex)
{
System.out.println("=======================================================");
System.out.println("=== Note: An Exception was thrown which should have ===");
System.out.println("=== caused a crash. I Catched it. Please report this ==");
System.out.println("=== to openoffice.org ==");
System.out.println("=======================================================");
ex.printStackTrace();
}
return null;
}
/**
* Rerurns the property "name" of the Object which is the source of the event.
*/
public static String getEventSourceName(EventObject eventObject)
{
XControl xControl = (XControl) UnoRuntime.queryInterface(XControl.class, eventObject.Source);
return (String) Helper.getUnoPropertyValue(xControl.getModel(), "Name", String.class);
}
}
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