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Diffstat (limited to '')
-rw-r--r-- | toolkit/test/accessibility/ov/ListeningObjectView.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/toolkit/test/accessibility/ov/ListeningObjectView.java b/toolkit/test/accessibility/ov/ListeningObjectView.java new file mode 100644 index 000000000..63b5f8ff7 --- /dev/null +++ b/toolkit/test/accessibility/ov/ListeningObjectView.java @@ -0,0 +1,80 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + +package ov; + +import com.sun.star.accessibility.AccessibleEventObject; +import com.sun.star.accessibility.XAccessibleContext; +import com.sun.star.accessibility.XAccessibleEventBroadcaster; +import com.sun.star.accessibility.XAccessibleEventListener; +import com.sun.star.lang.EventObject; +import com.sun.star.uno.UnoRuntime; + +/** Base class for object views that registers as accessibility event + listener. +*/ +abstract class ListeningObjectView + extends ObjectView + implements XAccessibleEventListener +{ + public ListeningObjectView (ObjectViewContainer aContainer) + { + super (aContainer); + } + + /** Add this object as event listener at the broadcasting + accessible object. + */ + @Override + public void SetObject (XAccessibleContext xContext) + { + super.SetObject (xContext); + XAccessibleEventBroadcaster xBroadcaster = + UnoRuntime.queryInterface( + XAccessibleEventBroadcaster.class, xContext); + if (xBroadcaster != null) + xBroadcaster.addAccessibleEventListener (this); + } + + + /** Remove this object as event listener from the broadcasting + accessible object. + */ + @Override + public void Destroy () + { + super.Destroy (); + XAccessibleEventBroadcaster xBroadcaster = + UnoRuntime.queryInterface( + XAccessibleEventBroadcaster.class, mxContext); + if (xBroadcaster != null) + xBroadcaster.removeAccessibleEventListener (this); + } + + /** Derived classes have to implement this method to handle incoming + events. + */ + abstract public void notifyEvent (AccessibleEventObject aEvent); + + /** The disposing event is ignored per default. If a derived class is + interested it can overwrite this method. + */ + public void disposing (EventObject aEvent) + { + } +} |