diff options
Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/tree/ToolkitNode.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/tree/ToolkitNode.java | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/tree/ToolkitNode.java b/accessibility/workben/org/openoffice/accessibility/awb/tree/ToolkitNode.java new file mode 100644 index 000000000000..8eaa9dab6c02 --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/ToolkitNode.java @@ -0,0 +1,215 @@ +/************************************************************************* + * + * 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); + } + } +} |