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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.canvas;
import java.awt.Rectangle;
import java.util.Iterator;
import javax.swing.event.TreeModelListener;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeWillExpandListener;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeModelEvent;
import javax.swing.tree.TreeNode;
import com.sun.star.accessibility.XAccessibleEventBroadcaster;
/** Each canvas has a shape container that is responsible for maintaining
a collection of shapes that are displayed by the canvas.
*/
public class ShapeContainer
implements TreeModelListener,
TreeExpansionListener,
TreeWillExpandListener
{
public ShapeContainer (Canvas aCanvas)
{
maShapeList = new java.util.Hashtable();
maBoundingBox = new Rectangle (0,0,100,100);
maCanvas = aCanvas;
maTree = null;
}
public synchronized void SetTree (javax.swing.JTree aTree)
{
if (aTree != maTree)
{
if (maTree != null)
{
maTree.getModel().removeTreeModelListener (this);
maTree.removeTreeExpansionListener (this);
maTree.removeTreeWillExpandListener (this);
}
Clear();
maTree = aTree;
maTree.getModel().addTreeModelListener (this);
maTree.addTreeExpansionListener (this);
maTree.addTreeWillExpandListener (this);
}
}
public synchronized boolean AddNode (TreeNode aNode)
{
CanvasShape aShape = (CanvasShape)maShapeList.get (aNode);
if (aShape == null)
{
aShape = new CanvasShape (aNode, maCanvas);
if (aNode instanceof XAccessibleEventBroadcaster)
((XAccessibleEventBroadcaster) aNode).addEventListener(aShape);
// Update bounding box that includes all objects.
if (maShapeList.size() == 0)
maBoundingBox = aShape.GetBBox();
else
maBoundingBox = maBoundingBox.union (aShape.GetBBox());
maShapeList.put (aNode, aShape);
maCanvas.repaint();
return true;
}
else
return false;
}
/**
*/
public synchronized boolean RemoveNode (TreeNode aNode)
{
CanvasShape aShape = (CanvasShape)maShapeList.get (aNode);
if (aShape != null)
{
if (aNode instanceof XAccessibleEventBroadcaster)
((XAccessibleEventBroadcaster) aNode).removeEventListener(aShape);
maShapeList.remove (aNode);
maCanvas.SelectObject (null);
maCanvas.repaint ();
return true;
}
else
return false;
}
public synchronized void Clear ()
{
maShapeList.clear ();
}
public Iterator GetIterator ()
{
return maShapeList.values().iterator ();
}
public CanvasShape Get (TreeNode aNode)
{
if (aNode != null) {
return (CanvasShape)maShapeList.get (aNode);
}
return null;
}
private void PrintMessage (String aMessage, java.util.EventObject aEvent)
{
// System.out.println ("ShapeContainer: " + aMessage + ": " + aEvent);
}
public void treeNodesChanged (TreeModelEvent aEvent)
{
PrintMessage ("treeNodesChanged", aEvent);
}
public void treeNodesInserted (TreeModelEvent aEvent)
{
PrintMessage ("treeNodesInserted", aEvent);
Object[] aNewNodes = aEvent.getChildren();
for (int i=0; i<aNewNodes.length; i++)
AddNode ((TreeNode)aNewNodes[i]);
}
public void treeNodesRemoved (TreeModelEvent aEvent)
{
PrintMessage ("treeNodesRemoved", aEvent);
Object[] aOldNodes = aEvent.getChildren();
for (int i=0; i<aOldNodes.length; i++)
RemoveNode ((TreeNode)aOldNodes[i]);
}
public void treeStructureChanged (TreeModelEvent aEvent)
{
PrintMessage ("treeStructureChanged", aEvent);
TreeNode aNode = (TreeNode)aEvent.getTreePath().getLastPathComponent();
RemoveAllChildren(aNode);
AddAllChildren(aNode);
}
public void treeWillExpand (TreeExpansionEvent aEvent)
{
PrintMessage ("treeWillExpand", aEvent);
}
public void treeWillCollapse (TreeExpansionEvent aEvent)
{
PrintMessage ("treeWillCollapse", aEvent);
TreeNode aNode = (TreeNode)aEvent.getPath().getLastPathComponent();
RemoveAllChildren (aNode);
}
public void treeExpanded (TreeExpansionEvent aEvent)
{
PrintMessage ("treeExpanded", aEvent);
TreeNode aNode = (TreeNode)aEvent.getPath().getLastPathComponent();
AddAllChildren (aNode);
}
public void treeCollapsed (TreeExpansionEvent aEvent)
{
PrintMessage ("treeCollapsed", aEvent);
}
private void AddAllChildren (TreeNode aNode) {
java.util.Enumeration aChildList = aNode.children();
while (aChildList.hasMoreElements()) {
TreeNode aChild = (TreeNode) aChildList.nextElement();
if (aChild != null) {
AddAllChildren (aChild);
AddNode (aChild);
}
}
}
private void RemoveAllChildren (TreeNode aNode) {
java.util.Enumeration aChildList = aNode.children();
while (aChildList.hasMoreElements()) {
TreeNode aChild = (TreeNode) aChildList.nextElement();
if (aChild != null) {
RemoveAllChildren (aChild);
RemoveNode (aChild);
}
}
}
private java.util.Hashtable maShapeList;
private Rectangle maBoundingBox;
private Canvas maCanvas;
private javax.swing.JTree maTree;
}
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