1*1b0aaa91SAndrew Rist /************************************************************** 2*1b0aaa91SAndrew Rist * 3*1b0aaa91SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*1b0aaa91SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*1b0aaa91SAndrew Rist * distributed with this work for additional information 6*1b0aaa91SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*1b0aaa91SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*1b0aaa91SAndrew Rist * "License"); you may not use this file except in compliance 9*1b0aaa91SAndrew Rist * with the License. You may obtain a copy of the License at 10*1b0aaa91SAndrew Rist * 11*1b0aaa91SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*1b0aaa91SAndrew Rist * 13*1b0aaa91SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*1b0aaa91SAndrew Rist * software distributed under the License is distributed on an 15*1b0aaa91SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*1b0aaa91SAndrew Rist * KIND, either express or implied. See the License for the 17*1b0aaa91SAndrew Rist * specific language governing permissions and limitations 18*1b0aaa91SAndrew Rist * under the License. 19*1b0aaa91SAndrew Rist * 20*1b0aaa91SAndrew Rist *************************************************************/ 21*1b0aaa91SAndrew Rist 22cdf0e10cSrcweir package ov; 23cdf0e10cSrcweir 24cdf0e10cSrcweir import com.sun.star.accessibility.AccessibleEventObject; 25cdf0e10cSrcweir import com.sun.star.accessibility.XAccessibleContext; 26cdf0e10cSrcweir import com.sun.star.accessibility.XAccessibleEventBroadcaster; 27cdf0e10cSrcweir import com.sun.star.accessibility.XAccessibleEventListener; 28cdf0e10cSrcweir import com.sun.star.lang.EventObject; 29cdf0e10cSrcweir import com.sun.star.uno.UnoRuntime; 30cdf0e10cSrcweir 31cdf0e10cSrcweir /** Base class for object views that regsiters as accessibility event 32cdf0e10cSrcweir listener. 33cdf0e10cSrcweir */ 34cdf0e10cSrcweir abstract class ListeningObjectView 35cdf0e10cSrcweir extends ObjectView 36cdf0e10cSrcweir implements XAccessibleEventListener 37cdf0e10cSrcweir { ListeningObjectView(ObjectViewContainer aContainer)38cdf0e10cSrcweir public ListeningObjectView (ObjectViewContainer aContainer) 39cdf0e10cSrcweir { 40cdf0e10cSrcweir super (aContainer); 41cdf0e10cSrcweir } 42cdf0e10cSrcweir 43cdf0e10cSrcweir /** Add this object as event listener at the broadcasting 44cdf0e10cSrcweir accessible object. 45cdf0e10cSrcweir */ SetObject(XAccessibleContext xContext)46cdf0e10cSrcweir public void SetObject (XAccessibleContext xContext) 47cdf0e10cSrcweir { 48cdf0e10cSrcweir super.SetObject (xContext); 49cdf0e10cSrcweir XAccessibleEventBroadcaster xBroadcaster = 50cdf0e10cSrcweir (XAccessibleEventBroadcaster)UnoRuntime.queryInterface( 51cdf0e10cSrcweir XAccessibleEventBroadcaster.class, xContext); 52cdf0e10cSrcweir if (xBroadcaster != null) 53cdf0e10cSrcweir xBroadcaster.addEventListener (this); 54cdf0e10cSrcweir } 55cdf0e10cSrcweir 56cdf0e10cSrcweir 57cdf0e10cSrcweir /** Remove this object as event listener from the broadcasting 58cdf0e10cSrcweir accessible object. 59cdf0e10cSrcweir */ Destroy()60cdf0e10cSrcweir public void Destroy () 61cdf0e10cSrcweir { 62cdf0e10cSrcweir super.Destroy (); 63cdf0e10cSrcweir XAccessibleEventBroadcaster xBroadcaster = 64cdf0e10cSrcweir (XAccessibleEventBroadcaster)UnoRuntime.queryInterface( 65cdf0e10cSrcweir XAccessibleEventBroadcaster.class, mxContext); 66cdf0e10cSrcweir if (xBroadcaster != null) 67cdf0e10cSrcweir xBroadcaster.removeEventListener (this); 68cdf0e10cSrcweir } 69cdf0e10cSrcweir 70cdf0e10cSrcweir /** Derived classes have to implement this method to handle incoming 71cdf0e10cSrcweir events. 72cdf0e10cSrcweir */ notifyEvent(AccessibleEventObject aEvent)73cdf0e10cSrcweir abstract public void notifyEvent (AccessibleEventObject aEvent); 74cdf0e10cSrcweir 75cdf0e10cSrcweir /** The disposing event is ignored per default. If a derived class is 76cdf0e10cSrcweir interested it can overwrite this method. 77cdf0e10cSrcweir */ disposing(EventObject aEvent)78cdf0e10cSrcweir public void disposing (EventObject aEvent) 79cdf0e10cSrcweir { 80cdf0e10cSrcweir } 81cdf0e10cSrcweir } 82