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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 org.openoffice.accessibility.misc;
import com.sun.star.lang.EventObject;
import com.sun.star.accessibility.AccessibleEventObject;
import com.sun.star.accessibility.XAccessibleEventBroadcaster;
import com.sun.star.accessibility.XAccessibleEventListener;
/**
*
*/
public class AccessibleEventMulticaster implements XAccessibleEventListener {
private final XAccessibleEventListener a;
private final XAccessibleEventListener b;
/** Creates a new instance of AccessibleEventMulticaster */
protected AccessibleEventMulticaster(XAccessibleEventListener a,
XAccessibleEventListener b) {
this.a = a;
this.b = b;
}
protected XAccessibleEventListener remove(XAccessibleEventListener l) {
if (l == a)
return b;
if (l == b)
return a;
XAccessibleEventListener a2 = remove(a, l);
XAccessibleEventListener b2 = remove(b, l);
if (a2 == a && b2 == b) {
return this; // not found
}
return add(a2, b2);
}
public void notifyEvent(AccessibleEventObject accessibleEventObject) {
a.notifyEvent(accessibleEventObject);
b.notifyEvent(accessibleEventObject);
}
public void disposing(EventObject eventObject) {
a.disposing(eventObject);
b.disposing(eventObject);
}
public static XAccessibleEventListener add(XAccessibleEventListener a, XAccessibleEventListener b) {
if (a == null)
return b;
if (b == null)
return a;
return new AccessibleEventMulticaster(a,b);
}
public static XAccessibleEventListener remove(XAccessibleEventListener l, XAccessibleEventListener oldl) {
if (l == oldl || l == null) {
return null;
} else if (l instanceof AccessibleEventMulticaster) {
return ((AccessibleEventMulticaster) l).remove(oldl);
} else {
return l;
}
}
}
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