/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*************************************************************/
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;
}
};