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Java > Open Source Codes > org > lucane > applications > whiteboard > operations > GraphRemove


1 /*
2  * Lucane - a collaborative platform
3  * Copyright (C) 2004 Vincent Fiack <vfiack@mail15.com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 package org.lucane.applications.whiteboard.operations;
20
21 import org.jgraph.event.GraphModelEvent;
22 import org.jgraph.graph.DefaultGraphCell;
23 import org.jgraph.graph.DefaultGraphModel;
24 import org.jgraph.graph.GraphModel;
25 import org.lucane.applications.whiteboard.graph.GraphUtils;
26 import org.lucane.applications.whiteboard.graph.MyGraph;
27
28 public class GraphRemove implements GraphOperation
29 {
30     private Object JavaDoc[] removed;
31     
32     public void init(GraphModelEvent gme)
33     {
34         GraphModelEvent.GraphModelChange change = gme.getChange();
35         this.removed = change.getRemoved();
36     }
37
38     public void apply(MyGraph graph)
39     {
40         GraphModel model = graph.getModel();
41         for(int i=0;i<removed.length;i++)
42         {
43             if(removed[i] == null)
44                 continue;
45             
46             DefaultGraphCell cell = (DefaultGraphCell)removed[i];
47             removed[i] = GraphUtils.findCorrespondingCell(graph, cell);
48         }
49         //removed = DefaultGraphModel.getDescendants(graph.getModel(), removed).toArray();
50 model.remove(removed);
51     }
52 }
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