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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package org.openoffice.accessibility.awb.tree;
import javax.swing.SwingUtilities;
import javax.swing.tree.TreeNode;
import javax.swing.tree.MutableTreeNode;
import javax.swing.tree.DefaultMutableTreeNode;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.awt.XExtendedToolkit;
import com.sun.star.awt.XTopWindow;
import com.sun.star.awt.XTopWindowListener;
import com.sun.star.accessibility.AccessibleRole;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.accessibility.XAccessibleEventBroadcaster;
import com.sun.star.accessibility.XAccessibleEventListener;
/**
*
*/
public abstract class AccessibilityModel extends javax.swing.tree.DefaultTreeModel {
protected java.util.Hashtable nodeList;
protected static DefaultMutableTreeNode disconnectedRootNode =
new DefaultMutableTreeNode("<not connected>");
/** Creates a new instance of AccessibilityModel */
public AccessibilityModel() {
super(disconnectedRootNode, false);
nodeList = new java.util.Hashtable();
}
/* Convenience method that creates a new Toolkit node from xToolkit
* and sets as the new root object of the tree.
*/
public synchronized void setRoot(XExtendedToolkit xToolkit) {
if (xToolkit != null) {
try {
// remove old root node as topwindow listener
if (getRoot() instanceof ToolkitNode) {
ToolkitNode tn = (ToolkitNode) getRoot();
if (tn.xToolkit != null) {
tn.xToolkit.removeTopWindowListener(tn);
}
}
nodeList.clear();
setRoot(new ToolkitNode(xToolkit, this));
xToolkit.addTopWindowListener((ToolkitNode) getRoot());
} catch (com.sun.star.uno.RuntimeException e) {
// FIXME: error message !
}
}
}
/* Appends the new child to parent's child list */
public void addNodeInto(MutableTreeNode newChild, MutableTreeNode parent) {
int index = parent.getChildCount();
if (newChild != null && newChild.getParent() == parent) {
index -= 1;
}
insertNodeInto(newChild, parent, index);
}
/** Adds listener to the listener chain of node */
public static void addEventListener(TreeNode node, XAccessibleEventListener listener) {
if (node instanceof AccessibilityNode) {
((AccessibilityNode) node).addEventListener(listener);
}
}
/** Removes listener from the listener chain of node */
public static void removeEventListener(TreeNode node, XAccessibleEventListener listener) {
if (node instanceof AccessibilityNode) {
((AccessibilityNode) node).removeEventListener(listener);
}
}
protected abstract AccessibilityNode createWindowNode(XAccessible xAccessible,
XAccessibleContext xAccessibleContext);
protected abstract AccessibilityNode createNode(XAccessible xAccessible);
/** Adds xAccessible,node to the internal hashtable */
public AccessibilityNode putNode(XAccessible xAccessible, AccessibilityNode node) {
if (xAccessible != null) {
String oid = UnoRuntime.generateOid(xAccessible);
java.lang.ref.WeakReference ref = (java.lang.ref.WeakReference)
nodeList.put(oid, new java.lang.ref.WeakReference(node));
if (ref != null) {
return (AccessibilityNode) ref.get();
}
}
return null;
}
/** Returns the AccessibilityNode for xAccessible */
public AccessibilityNode findNode(XAccessible xAccessible) {
if (xAccessible != null) {
String oid = UnoRuntime.generateOid(xAccessible);
java.lang.ref.WeakReference ref =
(java.lang.ref.WeakReference) nodeList.get(oid);
if (ref != null) {
return (AccessibilityNode) ref.get();
}
}
return null;
}
/** Removes the AccessibilityNode for xAccessible from the internal hashtable */
public AccessibilityNode removeNode(XAccessible xAccessible) {
if (xAccessible != null) {
String oid = UnoRuntime.generateOid(xAccessible);
java.lang.ref.WeakReference ref =
(java.lang.ref.WeakReference) nodeList.remove(oid);
if (ref != null) {
return (AccessibilityNode) ref.get();
}
}
return null;
}
public AccessibilityNode removeNode(Object o) {
if (o instanceof XAccessible) {
return removeNode((XAccessible) o);
}
return null;
}
}
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