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Java > Open Source Codes > org > nightlabs > editor2d > command > AbstractTransformCommand


1 /* *****************************************************************************
2  * NightLabs Editor2D - Graphical editor framework *
3  * Copyright (C) 2004-2005 NightLabs - http://NightLabs.org *
4  * Project author: Daniel Mazurek <Daniel.Mazurek [at] nightlabs [dot] org> *
5  * *
6  * This library is free software; you can redistribute it and/or *
7  * modify it under the terms of the GNU Lesser General Public *
8  * License as published by the Free Software Foundation; either *
9  * version 2.1 of the License, or (at your option) any later version. *
10  * *
11  * This library is distributed in the hope that it will be useful, *
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14  * Lesser General Public License for more details. *
15  * *
16  * You should have received a copy of the GNU Lesser General Public *
17  * License along with this library; if not, write to the *
18  * Free Software Foundation, Inc., *
19  * 51 Franklin St, Fifth Floor, *
20  * Boston, MA 02110-1301 USA *
21  * *
22  * Or get it online : *
23  * http://www.gnu.org/copyleft/lesser.html *
24  * *
25  * *
26  ******************************************************************************/
27
28 package org.nightlabs.editor2d.command;
29
30 import java.awt.geom.AffineTransform JavaDoc;
31 import java.util.HashMap JavaDoc;
32 import java.util.Iterator JavaDoc;
33 import java.util.List JavaDoc;
34 import java.util.Map JavaDoc;
35
36 import org.eclipse.gef.EditPart;
37 import org.eclipse.gef.commands.Command;
38
39 import org.nightlabs.editor2d.DrawComponent;
40 import org.nightlabs.editor2d.EditorPlugin;
41
42
43 public class AbstractTransformCommand
44 extends Command
45 {
46   protected Map JavaDoc dc2AffineTransform;
47   public AbstractTransformCommand()
48   {
49     super();
50     setLabel(EditorPlugin.getResourceString("command.transform"));
51   }
52
53   protected List JavaDoc editParts;
54   public List JavaDoc getEditParts() {
55     return editParts;
56   }
57   public void setEditParts(List JavaDoc editParts) {
58     this.editParts = editParts;
59   }
60   
61   protected AffineTransform JavaDoc affineTransform;
62   public AffineTransform JavaDoc getAffineTransform() {
63     return affineTransform;
64   }
65   public void setAffineTransform(AffineTransform JavaDoc affineTransform) {
66     this.affineTransform = affineTransform;
67   }
68   
69   public void execute()
70   {
71     dc2AffineTransform = new HashMap JavaDoc(getEditParts().size());
72     for (Iterator JavaDoc it = getEditParts().iterator(); it.hasNext(); )
73     {
74       EditPart editPart = (EditPart) it.next();
75       DrawComponent dc = (DrawComponent) editPart.getModel();
76       AffineTransform JavaDoc oldAffineTransform = dc.getAffineTransform();
77       dc2AffineTransform.put(dc, oldAffineTransform);
78       AffineTransform JavaDoc at = new AffineTransform JavaDoc(oldAffineTransform);
79       at.preConcatenate(getAffineTransform());
80       dc.setAffineTransform(at);
81     }
82   }
83   public void redo()
84   {
85     for (Iterator JavaDoc it = dc2AffineTransform.keySet().iterator(); it.hasNext(); )
86     {
87       DrawComponent dc = (DrawComponent) it.next();
88       dc.setAffineTransform(getAffineTransform());
89     }
90   }
91   
92   public void undo()
93   {
94     for (Iterator JavaDoc it = dc2AffineTransform.keySet().iterator(); it.hasNext(); )
95     {
96       DrawComponent dc = (DrawComponent) it.next();
97       AffineTransform JavaDoc oldAffineTransform = (AffineTransform JavaDoc) dc2AffineTransform.get(dc);
98       dc.setAffineTransform(oldAffineTransform);
99     }
100   }
101 }
102
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