diff options
Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/canvas/ShapeContainer.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/canvas/ShapeContainer.java | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/canvas/ShapeContainer.java b/accessibility/workben/org/openoffice/accessibility/awb/canvas/ShapeContainer.java new file mode 100644 index 000000000000..03ad4bf38c46 --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/canvas/ShapeContainer.java @@ -0,0 +1,237 @@ +/************************************************************************* + * + * 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; +} |