1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
*
* Copyright (C) 1999, Institute for MicroTherapy
*
* This software and supporting documentation were developed by
*
* University of Witten/Herdecke
* Department of Radiology and MicroTherapy
* Institute for MicroTherapy
* Medical computer science
*
* Universitaetsstrasse 142
* 44799 Bochum, Germany
*
* http://www.microtherapy.de/go/cs
* mailto:computer.science@microtherapy.de
*
* THIS SOFTWARE IS MADE AVAILABLE, AS IS, AND THE INSTITUTE MAKES NO
* WARRANTY REGARDING THE SOFTWARE, ITS PERFORMANCE, ITS MERCHANTABILITY
* OR FITNESS FOR ANY PARTICULAR USE, FREEDOM FROM ANY COMPUTER DISEASES
* OR ITS CONFORMITY TO ANY SPECIFICATION. THE ENTIRE RISK AS TO QUALITY
* AND PERFORMANCE OF THE SOFTWARE IS WITH THE USER.
*
* Author : $Author: kleber $
* Last update : $Date: 2001/06/06 10:32:30 $
* Revision : $Revision: 1.1.1.1 $
* State: $State: Exp $
*/
package processCommunication;
import main.*;
import java.util.*;
import javax.swing.event.*;
/**
* This class provides an event-based communication in
* an application. Parts of the application can add itself to this
* server to recieve incoming events. Those parts must implement the
* "ProcessLogListener"-interface.
* Do add a ProcessLogListener you may use the following commands:
* <code>
* class SomeListener implements ProcessLogListener
* {
* public SomeListener()
* {
* ProcessController es = ProcessController.instance().addMainListener(this);
* }
*
* public boolean logProcess (DicomScopeMessage e)
* {
* doSomething();
* return true;
* }
* }
* </code>
*/
public class ProcessController
{
// Singleton Pattern:
/**
* The one and only instance is stored here.
*/
private static ProcessController theInstance = null;
/**
* EventListenerList
*/
protected EventListenerList listenrList ;
/**
* The Constructor of this class. The one-and-only object of
* this class can be created (or retrieved) with this method.
*
* @return an instance of this class.
*/
public static ProcessController instance()
{
if (theInstance == null) theInstance = new ProcessController();
return theInstance;
}
/**
* The internal constructor of this class. Don't call direct.
*/
protected ProcessController ()
{
// do not instanciate this way!
listenrList = new EventListenerList();
}
/**
* Adds a ProcessLogListener.
* @param l The ProcessLogListener to be added
*/
public void addProcessLogListener(ProcessLogListener l)
{
listenrList.add(ProcessLogListener.class, l);
}
/**
* Removes the specified ProcessLogListener
* @param l The ProcessLogListener to be removed
*/
public void removeProcessLogListener(ProcessLogListener l)
{
listenrList.remove(ProcessLogListener.class, l);
}
/**
* Notify all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
* @param e The DicomScopeMessage to be fired
*/
public void fireProcessLog(DicomScopeMessage e)
{
// Guaranteed to return a non-null array
Object[] listeners = listenrList.getListenerList();
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length-2; i>=0; i-=2)
{
if (listeners[i]==ProcessLogListener.class)
{
// Lazily create the event:
//if (jiveMessage == null) fooEvent = new FooEvent(this);
((ProcessLogListener)listeners[i+1]).logProcess(e);
}
}
}
}
/*
* CVS Log
* $Log: ProcessController.java,v $
* Revision 1.1.1.1 2001/06/06 10:32:30 kleber
* Init commit for DICOMscope 3.5
* Create new CVS
*
*/
|
