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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 com.sun.star.accessibility.AccessibleRole;
import com.sun.star.accessibility.XAccessible;
import com.sun.star.accessibility.XAccessibleContext;
import com.sun.star.awt.XExtendedToolkit;
import com.sun.star.awt.XTopWindow;
import com.sun.star.uno.UnoRuntime;
import javax.swing.SwingUtilities;
import javax.swing.tree.DefaultMutableTreeNode;
/**
*
*/
public class ToolkitNode extends DefaultMutableTreeNode
implements com.sun.star.awt.XTopWindowListener {
protected XExtendedToolkit xToolkit;
private AccessibilityModel treeModel;
/** Creates a new instance of TopWindowListener */
public ToolkitNode(XExtendedToolkit xToolkit, AccessibilityModel treeModel) {
super("<connected>");
this.xToolkit = xToolkit;
this.treeModel = treeModel;
// Initially fill the child list
try {
for (int i=0,j=xToolkit.getTopWindowCount(); i<j; i++) {
XTopWindow xTopWindow = xToolkit.getTopWindow(i);
if (xTopWindow != null) {
AccessibilityNode an = getTopWindowNode(xTopWindow);
if (an != null) {
add(an);
// Calling oneway methods from an UNO thread may cause
// deadlocks, so adding the listeners here.
an.setAttached(true);
}
}
}
} catch (com.sun.star.lang.IndexOutOfBoundsException e) {
// This should never happen since we properly check the count
// before - anyway returning what we got so far.
}
}
/** Returns an AccessibilityNode if xAccessible has a valid toplevel */
private AccessibilityNode getTopWindowNode(XAccessible xAccessible) {
XAccessibleContext xAC = xAccessible.getAccessibleContext();
if (xAC != null) {
short role = xAC.getAccessibleRole();
if ((role == AccessibleRole.FRAME) || (role == AccessibleRole.DIALOG) || (role == AccessibleRole.WINDOW)) {
return treeModel.createWindowNode(xAccessible, xAC);
}
}
return null;
}
/** Returns an AccessibilityNode if xAccessible has a valid toplevel */
private AccessibilityNode getTopWindowNode(XAccessible xAccessible, XAccessibleContext xAC) {
if (xAC != null) {
short role = xAC.getAccessibleRole();
if ((role == AccessibleRole.FRAME) || (role == AccessibleRole.DIALOG) || (role == AccessibleRole.WINDOW)) {
AccessibilityNode parent = treeModel.createWindowNode(xAccessible, xAC);
if (parent != null) {
try {
int n = xAC.getAccessibleChildCount();
for (int i=0; i<n; i++) {
AccessibilityNode child = treeModel.createNode(xAC.getAccessibleChild(i));
if (child != null) {
parent.add(child);
}
}
} catch (com.sun.star.lang.IndexOutOfBoundsException e) {
}
}
return parent;
}
}
return null;
}
/** Returns the XAccessible interface corresponding to the toplevel window */
private AccessibilityNode getTopWindowNode(XTopWindow w) {
XAccessible xAccessible = (XAccessible)
UnoRuntime.queryInterface(XAccessible.class, w);
if (xAccessible != null) {
// XTopWindows usually have an accessible parent, which is the
// native container window ..
XAccessibleContext xAC = xAccessible.getAccessibleContext();
if (xAC != null) {
XAccessible xParent = xAC.getAccessibleParent();
if (xParent != null) {
AccessibilityNode parent = getTopWindowNode(xParent);
AccessibilityNode child = treeModel.createNode(xAccessible);
if (parent != null && child != null) {
parent.add(child);
}
return parent;
} else {
return getTopWindowNode(xAccessible, xAC);
}
}
}
return null;
}
public void disposing(com.sun.star.lang.EventObject eventObject) {
// FIXME : message
// prevent setRoot from removing this as event listener
xToolkit = null;
treeModel.setRoot(treeModel.disconnectedRootNode);
}
public void windowActivated(com.sun.star.lang.EventObject eventObject) {
}
public void windowClosed(com.sun.star.lang.EventObject eventObject) {
XAccessible xAccessible = (XAccessible) UnoRuntime.queryInterface(
XAccessible.class, eventObject.Source);
if (xAccessible != null) {
AccessibilityNode node = treeModel.findNode(xAccessible);
// The object implementing XTopWindow is often not the toplevel
// accessible object.
if (node != null && node.getParent() != this) {
node = (AccessibilityNode) node.getParent();
}
if (node != null) {
final AccessibilityNode an = node;
Runnable removeRun = new Runnable() {
public void run() {
try {
treeModel.removeNodeFromParent(an);
// Calling oneway methods from an UNO thread may cause
// deadlocks, so removing the listeners here.
an.setAttached(false);
} catch (IllegalArgumentException e) {
// for some toplevel we get more than one event -
// ignoring
}
}
};
SwingUtilities.invokeLater(removeRun);
}
}
}
public void windowClosing(com.sun.star.lang.EventObject eventObject) {
}
public void windowDeactivated(com.sun.star.lang.EventObject eventObject) {
}
public void windowMinimized(com.sun.star.lang.EventObject eventObject) {
}
public void windowNormalized(com.sun.star.lang.EventObject eventObject) {
}
public void windowOpened(com.sun.star.lang.EventObject eventObject) {
final XTopWindow xTopWindow = (XTopWindow) UnoRuntime.queryInterface(
XTopWindow.class, eventObject.Source);
if (xTopWindow != null) {
final ToolkitNode tn = this;
Runnable addNodeRun = new Runnable() {
public void run() {
// Note: UNO does not allow to make synchronous callbacks
// to oneway calls, so we have to fetch the node here.
AccessibilityNode an = getTopWindowNode(xTopWindow);
if (an != null) {
treeModel.addNodeInto(an, tn);
// Calling oneway methods from an UNO thread may cause
// deadlocks, so adding the listeners here.
an.setAttached(true);
}
}
};
SwingUtilities.invokeLater(addNodeRun);
}
}
}
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