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Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityTreeModel.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityTreeModel.java | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityTreeModel.java b/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityTreeModel.java new file mode 100644 index 000000000000..6069c8f5f5ee --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/AccessibilityTreeModel.java @@ -0,0 +1,217 @@ +/************************************************************************* + * + * 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.XAccessible; +import com.sun.star.awt.XExtendedToolkit; +import com.sun.star.lang.DisposedException; +import com.sun.star.lang.IndexOutOfBoundsException; + +import org.openoffice.accessibility.misc.OfficeConnection; +import org.openoffice.accessibility.awb.event.EventQueue; + +import javax.swing.tree.DefaultTreeModel; +import javax.swing.tree.TreeNode; + + +public class AccessibilityTreeModel + extends DefaultTreeModel +{ + public AccessibilityTreeModel () + { + super (null); + setAsksAllowsChildren (false); + + SetRootNode(); + } + + + + /** Release all resources. + */ + synchronized public void Dispose () + { + Clear (); + } + + + + /** Calls to this method are dispatched to the given node but are + observed for exceptions. + */ + synchronized public boolean isLeaf (Object aObject) + { + boolean bIsLeaf = true; + + if (aObject != null) + { + AccessibilityNode aNode = (AccessibilityNode)aObject; + try + { + bIsLeaf = aNode.isLeaf(); + } + catch (DisposedException aException) + { + System.out.println ("node is disposed. removing it"); + /* TreeNode aParent = aNode.GetParent(); + int nIndexInParent = aParent.getIndex (aNode); + aNode.removeFromParent (); + System.out.println ("" + aParent + " # " + aNode + " # "+ nIndexInParent); + nodesWereRemoved ( + aParent, new int[]{nIndexInParent}, new + Object[]{aNode}); + */ + } + catch (Exception aException) + { + System.err.println ("caught exception in AccessibilityTreeModel.isLeaf():" + + aException); + aException.printStackTrace (System.err); + } + } + + return bIsLeaf; + } + + + + + synchronized public int getChildCount (Object aObject) + { + AccessibilityNode aNode = (AccessibilityNode)aObject; + return aNode.getChildCount(); + } + + + + + /** Return the requested child of aParent. If that child is not yet + known to the parent then try to create it. + */ + synchronized public Object getChild (Object aParent, final int nIndex) + { + AccessibilityNode aChild = null; + + final AccessibilityNode aParentNode = (AccessibilityNode)aParent; + + // Try to get an existing child from the super class object. + aChild = aParentNode.GetChildNoCreate (nIndex); + + // When the requested child does not yet exist and this node is not a + // special node then create a new node. + if (aChild == null) + { + aChild = aParentNode.CreateChild (nIndex); + aParentNode.SetChild ((AccessibilityNode)aChild, nIndex); + /* EventQueue.Instance().AddEvent (new Runnable() { public void run() { + AccessibilityTreeModel.this.nodeWasInserted ( + aParentNode, nIndex); + }}); + */ } + + return aChild; + } + + + synchronized public void nodeWasInserted (AccessibilityNode aParent, int nIndex) + { + nodesWereInserted (aParent, new int[]{nIndex}); + nodeStructureChanged (aParent); + + } + + + + + /** Clear the tree so that afterwards it has only the root node. + */ + public void Clear () + { + AccessibilityNode aRoot = (AccessibilityNode)getRoot(); + aRoot.RemoveAllChildren(); + SetRootNode(); + nodeStructureChanged (aRoot); + } + + + + + private void SetRootNode () + { + OfficeConnection aConnection = OfficeConnection.Instance(); + AccessibilityNode aRoot; + if (aConnection!=null && aConnection.IsValid()) + aRoot = new AccessibilityNode ("<connected>"); + else + aRoot = new AccessibilityNode ("<not connected>"); + setRoot (aRoot); + } + + + + + /** Add a new child to the root node. + */ + public synchronized void AddTopLevelNode (AccessibilityNode aNode) + { + if (aNode != null) + { + if ( ! OfficeConnection.Instance().IsValid()) + { + setRoot (null); + } + + AccessibilityNode aRoot = (AccessibilityNode)getRoot(); + if (aRoot == null) + { + aRoot = new AccessibilityNode ("<connected>"); + setRoot (aRoot); + } + + aNode.SetParent (aRoot); + aRoot.Append (aNode); + nodesWereInserted (aRoot, new int[]{aRoot.getIndex (aNode)}); + } + } + + + + + /** Remove a node that is a direct child of the root. + */ + public synchronized void RemoveTopLevelNode (AccessibilityNode aNode) + { + AccessibilityNode aRoot = (AccessibilityNode)getRoot(); + if (aRoot != null) + { + int nIndex = aRoot.getIndex (aNode); + aRoot.Remove (aNode); + nodesWereRemoved (aRoot, new int[]{nIndex}, new Object[]{aNode}); + } + } +} |