| /************************************************************** |
| * |
| * 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 |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| 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; |
| } |
| }; |
| |