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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;
+ }
+}