1
|
|
/*
|
2
|
|
* Angkor Web Framework
|
3
|
|
*
|
4
|
|
* Distributable under LGPL license.
|
5
|
|
* See terms of license at gnu.org.
|
6
|
|
*/
|
7
|
|
|
8
|
|
package com.tirsen.angkor.event;
|
9
|
|
|
10
|
|
import com.tirsen.angkor.Debug;
|
11
|
|
import com.tirsen.angkor.Multicaster;
|
12
|
|
import com.tirsen.angkor.RenderContext;
|
13
|
|
import org.apache.log4j.Category;
|
14
|
|
|
15
|
|
import java.io.Serializable;
|
16
|
|
|
17
|
|
/**
|
18
|
|
* Utility class for sending action events.
|
19
|
|
*
|
20
|
|
* <!-- $Id: ActionSourceHelper.java,v 1.3 2002/10/09 21:37:37 tirsen Exp $ -->
|
21
|
|
*
|
22
|
|
* @author $Author: tirsen $
|
23
|
|
* @version $Revision: 1.3 $
|
24
|
|
*/
|
25
|
|
public class ActionSourceHelper implements ActionSource, Serializable
|
26
|
|
{
|
27
|
|
private static final Category logger = Category.getInstance(Debug.LOGGER_NAME);
|
28
|
|
private Action action;
|
29
|
|
private Object source;
|
30
|
|
private ActionListener listeners;
|
31
|
|
|
32
|
2
|
public ActionSourceHelper(Object source)
|
33
|
|
{
|
34
|
2
|
this.source = source;
|
35
|
|
}
|
36
|
|
|
37
|
14
|
public Action getAction()
|
38
|
|
{
|
39
|
14
|
return action;
|
40
|
|
}
|
41
|
|
|
42
|
2
|
public void setAction(Action action)
|
43
|
|
{
|
44
|
2
|
this.action = action;
|
45
|
|
}
|
46
|
|
|
47
|
0
|
public void addActionListener(ActionListener listener)
|
48
|
|
{
|
49
|
0
|
if (listeners == null) listeners = (ActionListener) Multicaster.create(ActionListener.class, true);
|
50
|
0
|
Multicaster.add(listeners, listener);
|
51
|
|
}
|
52
|
|
|
53
|
0
|
public void removeActionListener(ActionListener listener)
|
54
|
|
{
|
55
|
0
|
Multicaster.remove(listeners, listener);
|
56
|
0
|
if (Multicaster.isEmpty(listeners)) listeners = null;
|
57
|
|
}
|
58
|
|
|
59
|
1
|
public void signalActionEvent(RenderContext context)
|
60
|
|
{
|
61
|
1
|
if (hasListeners())
|
62
|
|
{
|
63
|
1
|
ActionEvent evt = new ActionEvent(source);
|
64
|
1
|
if (action != null)
|
65
|
|
{
|
66
|
1
|
logger.info("invoking action " + action);
|
67
|
1
|
context.getEventQueue().postEvent(ActionListener.class, action, evt, "actionPerformed");
|
68
|
|
}
|
69
|
0
|
if (!Multicaster.isEmpty(listeners)) context.getEventQueue().postEvent(ActionListener.class, listeners, evt, "actionPerformed");
|
70
|
|
}
|
71
|
|
}
|
72
|
|
|
73
|
0
|
public void signalActionEvent()
|
74
|
|
{
|
75
|
0
|
if (hasListeners())
|
76
|
|
{
|
77
|
0
|
signalActionEvent(RenderContext.getRenderContext());
|
78
|
|
}
|
79
|
|
}
|
80
|
|
|
81
|
1
|
public boolean hasListeners()
|
82
|
|
{
|
83
|
1
|
return !Multicaster.isEmpty(listeners) || action != null;
|
84
|
|
}
|
85
|
|
}
|
86
|
|
|