/**************************************************************
*
* 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.
*
*************************************************************/
package org.openoffice.accessibility.awb.tree;
import org.openoffice.accessibility.misc.AccessibleEventMulticaster;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.SwingUtilities;
import com.sun.star.accessibility.AccessibleEventId;
import com.sun.star.accessibility.AccessibleEventObject;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.accessibility.XAccessibleEventBroadcaster;
import com.sun.star.accessibility.XAccessibleEventListener;
import com.sun.star.uno.UnoRuntime;
class AccessibilityNode extends DefaultMutableTreeNode implements XAccessible,
XAccessibleEventListener, XAccessibleEventBroadcaster {
protected AccessibilityModel treeModel;
protected XAccessibleContext unoAccessibleContext;
private XAccessibleEventListener listener;
public AccessibilityNode(AccessibilityModel treeModel) {
this.treeModel = treeModel;
}
protected void finalize() throws java.lang.Throwable {
if (userObject != null) {
treeModel.removeNode(userObject);
}
}
/** Sets the XAccessibleContext object of this node */
public void setAccessibleContext(XAccessibleContext xAccessibleContext) {
unoAccessibleContext = xAccessibleContext;
}
/** Returns the XAccessibleContext object of this node */
public XAccessibleContext getAccessibleContext() {
return unoAccessibleContext;
}
/** Attaches or Detaches the itself as listener to unoAccessibleContext */
protected void setAttached(boolean attach) {
XAccessibleContext xAccessibleContext = unoAccessibleContext;
if (xAccessibleContext != null) {
try {
XAccessibleEventBroadcaster xAccessibleEventBroadcaster =
UnoRuntime.queryInterface( XAccessibleEventBroadcaster.class, xAccessibleContext );
if (xAccessibleEventBroadcaster != null) {
if (attach) {
xAccessibleEventBroadcaster.addEventListener(this);
} else {
xAccessibleEventBroadcaster.removeEventListener(this);
}
}
} catch (com.sun.star.uno.RuntimeException e) {
// FIXME: error message !
}
}
}
public void disposing(com.sun.star.lang.EventObject eventObject) {
XAccessibleEventListener localListener = this.listener;
if (localListener != null) {
localListener.disposing(eventObject);
}
treeModel.removeNode(userObject);
userObject = null;
unoAccessibleContext = null;
// FIXME: mark the object as being disposed in the tree view !
}
protected void handleChildRemoved(XAccessible xAccessible) {
final AccessibilityNode node = treeModel.findNode(xAccessible);
if (node != null) {
SwingUtilities.invokeLater(new java.lang.Runnable() {
public void run() {
treeModel.removeNodeFromParent(node);
}
});
}
}
protected void handleChildAdded(XAccessible xAccessible) {
final AccessibilityNode parent = this;
final AccessibilityNode node = treeModel.createNode(xAccessible);
if (node != null) {
SwingUtilities.invokeLater(new java.lang.Runnable() {
public void run() {
try {
XAccessibleContext xAC = node.getAccessibleContext();
if (xAC != null) {
treeModel.insertNodeInto(node, parent,
xAC.getAccessibleIndexInParent());
}
} catch (com.sun.star.uno.RuntimeException e) {
// FIXME: output
}
}
});
}
}
public void notifyEvent(AccessibleEventObject accessibleEventObject) {
if (accessibleEventObject.EventId == AccessibleEventId.CHILD) {
XAccessible xAccessible = UnoRuntime.queryInterface( XAccessible.class, accessibleEventObject.OldValue );
if (xAccessible != null) {
handleChildRemoved(xAccessible);
}
xAccessible = UnoRuntime.queryInterface( XAccessible.class, accessibleEventObject.NewValue );
if (xAccessible != null) {
handleChildAdded(xAccessible);
}
}
XAccessibleEventListener localListener = this.listener;
if (localListener != null) {
localListener.notifyEvent(accessibleEventObject);
}
}
public synchronized void addEventListener(com.sun.star.accessibility.XAccessibleEventListener xAccessibleEventListener) {
listener = AccessibleEventMulticaster.add(listener, xAccessibleEventListener);
}
public synchronized void removeEventListener(com.sun.star.accessibility.XAccessibleEventListener xAccessibleEventListener) {
listener = AccessibleEventMulticaster.remove(listener, xAccessibleEventListener);
}
}