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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 | 200 |
1 files changed, 200 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..36c5d71b240e --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityNode.java @@ -0,0 +1,200 @@ +/************************************************************************* + * + * $RCSfile: AccessibilityNode.java,v $ + * + * $Revision: 1.2 $ + * + * last change: $Author: obr $ $Date: 2003/09/19 09:21:39 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library 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 for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (the "License"); You may not use this file + * except in compliance with the License. You may obtain a copy of the + * License at http://www.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +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 = + (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 listener = this.listener; + if (listener != null) { + listener.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 = (XAccessible) UnoRuntime.queryInterface( + XAccessible.class, accessibleEventObject.OldValue); + if (xAccessible != null) { + handleChildRemoved(xAccessible); + } + + xAccessible = (XAccessible) UnoRuntime.queryInterface( + XAccessible.class, accessibleEventObject.NewValue); + if (xAccessible != null) { + handleChildAdded(xAccessible); + } + } + + XAccessibleEventListener listener = this.listener; + if (listener != null) { + listener.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); + } +} + + |