/*************************************************************************
*
* $RCSfile: AccessibleEventMulticaster.java,v $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
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;
}
}
}