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Java > Open Source Codes > org > nightlabs > editor2d > actions > zoom > ZoomAction


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.actions.zoom;
29
30 import org.eclipse.gef.Disposable;
31 import org.eclipse.gef.editparts.ZoomListener;
32 import org.eclipse.gef.editparts.ZoomManager;
33 import org.eclipse.jface.action.Action;
34 import org.eclipse.jface.resource.ImageDescriptor;
35
36
37 public abstract class ZoomAction
38 extends Action
39 implements ZoomListener, Disposable
40 {
41     /**
42     * The ZoomManager used to zoom in or out
43     */
44     protected ZoomManager zoomManager;
45     
46     /**
47     * Constructor
48     * @param text the action's text, or <code>null</code> if there is no text
49     * @param image the action's image, or <code>null</code> if there is no image
50     * @param zoomManager the ZoomManager used to zoom in or out
51     */
52     public ZoomAction(String JavaDoc text, ImageDescriptor image, ZoomManager zoomManager)
53     {
54         super(text, image);
55         this.zoomManager = zoomManager;
56         zoomManager.addZoomListener(this);
57     }
58     
59     /**
60     * @see org.eclipse.gef.Disposable#dispose()
61     */
62     public void dispose() {
63       zoomManager.removeZoomListener(this);
64     }
65
66 }
67
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