/*************************************************************************
*
* $RCSfile: PropChgHelper.java,v $
*
* $Revision: 1.3 $
*
* last change: $Author: hr $ $Date: 2003-06-30 15:40:24 $
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright (c) 2003 by Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************/
import com.sun.star.linguistic2.XLinguServiceEventBroadcaster;
import com.sun.star.linguistic2.XLinguServiceEventListener;
import com.sun.star.linguistic2.LinguServiceEvent;
import com.sun.star.beans.XPropertySet;
import com.sun.star.beans.XPropertyChangeListener;
import com.sun.star.beans.PropertyChangeEvent;
import com.sun.star.lang.EventObject;
import com.sun.star.uno.XInterface;
import java.util.ArrayList;
public class PropChgHelper implements
XPropertyChangeListener,
XLinguServiceEventBroadcaster
{
XInterface xEvtSource;
String[] aPropNames;
XPropertySet xPropSet;
ArrayList aLngSvcEvtListeners;
public PropChgHelper(
XInterface xEvtSource,
String[] aPropNames )
{
this.xEvtSource = xEvtSource;
this.aPropNames = aPropNames;
xPropSet = null;
aLngSvcEvtListeners = new ArrayList();
}
public XInterface GetEvtSource()
{
return xEvtSource;
}
public XPropertySet GetPropSet()
{
return xPropSet;
}
public String[] GetPropNames()
{
return aPropNames;
}
public void LaunchEvent( LinguServiceEvent aEvt )
{
int nCnt = aLngSvcEvtListeners.size();
for (int i = 0; i < nCnt; ++i)
{
XLinguServiceEventListener xLstnr =
(XLinguServiceEventListener) aLngSvcEvtListeners.get(i);
if (xLstnr != null)
xLstnr.processLinguServiceEvent( aEvt );
}
}
public void AddAsListenerTo( XPropertySet xPropertySet )
{
// do not listen any longer to the old property set (if any)
RemoveAsListener();
// set new property set to be used and register as listener to it
xPropSet = xPropertySet;
if (xPropSet != null)
{
int nLen = aPropNames.length;
for (int i = 0; i < nLen; ++i)
{
if (aPropNames[i].length() != 0)
{
try {
xPropSet.addPropertyChangeListener(
aPropNames[i], (XPropertyChangeListener) this );
}
catch( Exception e ) {
}
}
}
}
}
public void RemoveAsListener()
{
if (xPropSet != null)
{
int nLen = aPropNames.length;
for (int i = 0; i < nLen; ++i)
{
if (aPropNames[i].length() != 0)
{
try {
xPropSet.removePropertyChangeListener(
aPropNames[i], (XPropertyChangeListener) this );
}
catch( Exception e ) {
}
}
}
xPropSet = null;
}
}
// __________ interface methods __________
//***************
// XEventListener
//***************
public void disposing( EventObject aSource )
throws com.sun.star.uno.RuntimeException
{
if (aSource.Source == xPropSet)
{
RemoveAsListener();
}
}
//************************
// XPropertyChangeListener
//************************
public void propertyChange( PropertyChangeEvent aEvt )
throws com.sun.star.uno.RuntimeException
{
// will be overloaded in derived classes
}
//******************************
// XLinguServiceEventBroadcaster
//******************************
public boolean addLinguServiceEventListener(
XLinguServiceEventListener xListener )
throws com.sun.star.uno.RuntimeException
{
boolean bRes = false;
if (xListener != null)
{
bRes = aLngSvcEvtListeners.add( xListener );
}
return bRes;
}
public boolean removeLinguServiceEventListener(
XLinguServiceEventListener xListener )
throws com.sun.star.uno.RuntimeException
{
boolean bRes = false;
if (xListener != null)
{
int nIdx = aLngSvcEvtListeners.indexOf( xListener );
if (nIdx != -1)
{
aLngSvcEvtListeners.remove( nIdx );
bRes = true;
}
}
return bRes;
}
};