Statistics
| Revision:

svn-gvsig-desktop / branches / v10 / libraries / libIverUtiles / src / com / iver / utiles / swing / threads / Cancellable.java @ 20100

History | View | Annotate | Download (2.25 KB)

1
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
2
 *
3
 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
4
 *
5
 * This program is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU General Public License
7
 * as published by the Free Software Foundation; either version 2
8
 * of the License, or (at your option) any later version.
9
 *
10
 * This program 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
13
 * GNU General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU General Public License
16
 * along with this program; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
18
 *
19
 * For more information, contact:
20
 *
21
 *  Generalitat Valenciana
22
 *   Conselleria d'Infraestructures i Transport
23
 *   Av. Blasco Ib??ez, 50
24
 *   46010 VALENCIA
25
 *   SPAIN
26
 *
27
 *      +34 963862235
28
 *   gvsig@gva.es
29
 *      www.gvsig.gva.es
30
 *
31
 *    or
32
 *
33
 *   IVER T.I. S.A
34
 *   Salamanca 50
35
 *   46005 Valencia
36
 *   Spain
37
 *
38
 *   +34 963163400
39
 *   dac@iver.es
40
 */
41
package com.iver.utiles.swing.threads;
42

    
43
import java.awt.Graphics;
44

    
45
/**
46
 * <p><code>Cancellable</code> interface is designed for adding support to notify that a task must be cancelled.</p>
47
 * 
48
 * <p>This is useful if a process is hung up, blocking, or simply if user wants cancel it, for instance, a
49
 *  drawing process of a heavy layer.</p>
50
 * 
51
 * <p>The classes which implement this interface are force to share the canceling information, in order to be
52
 *  notified about the current status of it. This implies a synchronous canceling process, that could be implemented by
53
 *  another object.</p>
54
 */
55
public interface Cancellable {
56
        /**
57
         * <p>Determines if the related task must be canceled.</p>
58
         * 
59
         * @return <code>true</code> if task must been canceled; otherwise <code>false</code>
60
         * 
61
         * @see #setCanceled(boolean)
62
         */
63
        boolean isCanceled();
64

    
65
        /**
66
         * <p>Sets if the related task must be canceled.</p>
67
         * 
68
         * @param canceled <code>true</code> if the task must be canceled; otherwise <code>false</code>
69
         * 
70
         * @see #isCanceled()
71
         */
72
        void setCanceled(boolean canceled);
73
}