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Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java b/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java new file mode 100644 index 000000000000..81a499aabf0d --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java @@ -0,0 +1,163 @@ +/************************************************************************* + * + * 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 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); + } +} + + |