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+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * The Contents of this file are made available subject to the terms of
+ * the BSD license.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ * 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
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * 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
+{
+ private final XInterface xEvtSource;
+ private final String[] aPropNames;
+ private XPropertySet xPropSet;
+ private final ArrayList<XLinguServiceEventListener> aLngSvcEvtListeners;
+
+ public PropChgHelper(
+ XInterface xEvtSource,
+ String[] aPropNames )
+ {
+ this.xEvtSource = xEvtSource;
+ this.aPropNames = aPropNames;
+ xPropSet = null;
+ aLngSvcEvtListeners = new ArrayList<XLinguServiceEventListener>();
+ }
+
+ public XInterface GetEvtSource()
+ {
+ return xEvtSource;
+ }
+
+ public XPropertySet GetPropSet()
+ {
+ return xPropSet;
+ }
+
+
+
+ public void LaunchEvent( LinguServiceEvent aEvt )
+ {
+ int nCnt = aLngSvcEvtListeners.size();
+ for (int i = 0; i < nCnt; ++i)
+ {
+ XLinguServiceEventListener xLstnr =
+ 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], this );
+ }
+ catch( Exception e ) {
+ }
+ }
+ }
+ }
+ }
+
+ private 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], 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 overridden 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;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */