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


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 org.apache.log4j.Logger;
31
32 import org.nightlabs.editor2d.Editor2DFactory;
33 import org.nightlabs.editor2d.EditorPlugin;
34 import org.nightlabs.editor2d.Layer;
35 import org.nightlabs.editor2d.MultiLayerDrawComponent;
36
37
38 public class CreateLayerCommand
39 extends CreateDrawComponentCommand
40 {
41   public static final Logger LOGGER = Logger.getLogger(CreateLayerCommand.class);
42   
43   private static final String JavaDoc LAYER_DEFAULT_NAME = EditorPlugin.getResourceString("layer_default_name");
44     
45     private int layerCount = 0;
46     protected int nextLayerCount() {
47       return layerCount++;
48     }
49      
50     public CreateLayerCommand(MultiLayerDrawComponent parent)
51     {
52         if (parent == null) {
53             throw new IllegalArgumentException JavaDoc("Param parent (MultiLayerDrawComponent) must not be null!");
54         }
55       
56       this.parent = parent;
57       setLabel(EditorPlugin.getResourceString("command.create.layer"));
58     }
59     
60     /* (non-Javadoc)
61      * @see org.eclipse.gef.commands.Command#execute()
62      */

63     public void execute()
64     {
65       drawComponent = Editor2DFactory.eINSTANCE.createLayer();
66       
67     getLayer().setParent(getMultiLayerDrawComponent());
68         drawOrderIndex = getMultiLayerDrawComponent().getDrawComponents().indexOf(
69         getMultiLayerDrawComponent().getCurrentLayer()) + 1;
70     getMultiLayerDrawComponent().addDrawComponent(getLayer(), drawOrderIndex);
71         shapeAdded = true;
72         if (layerCount == 0) {
73           layerCount = getMultiLayerDrawComponent().getDrawComponents().size();
74         }
75     getMultiLayerDrawComponent().setCurrentLayer(getLayer());
76     // TODO should come from somewhere else
77
// getLayer().setName(LAYER_DEFAULT_NAME + nextLayerCount());
78
}
79     
80     /* (non-Javadoc)
81      * @see org.eclipse.gef.commands.Command#redo()
82      */

83     public void redo()
84     {
85     super.redo();
86         getMultiLayerDrawComponent().setCurrentLayer(getLayer());
87     }
88     
89     /* (non-Javadoc)
90      * @see org.eclipse.gef.commands.Command#undo()
91      */

92     public void undo()
93     {
94     super.undo();
95         layerCount--;
96     }
97         
98     protected MultiLayerDrawComponent getMultiLayerDrawComponent() {
99       return (MultiLayerDrawComponent) parent;
100     }
101   
102   protected Layer getLayer() {
103     return (Layer) drawComponent;
104   }
105 }
106
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