1 |
/* AbstractListModel.java -- |
/* AbstractListModel.java -- |
2 |
Copyright (C) 2002 Free Software Foundation, Inc. |
Copyright (C) 2002 Free Software Foundation, Inc. |
3 |
|
|
4 |
This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
37 |
|
|
38 |
package javax.swing; |
package javax.swing; |
39 |
|
|
40 |
import javax.swing.event.*; |
// Imports |
41 |
|
import java.io.*; |
42 |
import java.util.*; |
import java.util.*; |
43 |
|
import javax.swing.event.*; |
44 |
|
|
45 |
// fire up change events before or after |
/** |
46 |
// the element removed/added ? |
* AbstractListModel |
47 |
|
* A2uthor Ronald Veldema |
48 |
public class AbstractListModel implements ListModel |
* @author Andrew Selkirk |
49 |
{ |
* @version 1.0 |
50 |
Vector elts = new Vector(); |
*/ |
51 |
|
public abstract class AbstractListModel implements ListModel, Serializable { |
52 |
public int getSize() |
|
53 |
{ |
//------------------------------------------------------------- |
54 |
return elts.size(); |
// Variables -------------------------------------------------- |
55 |
} |
//------------------------------------------------------------- |
56 |
|
|
57 |
public Object getElementAt(int index) |
/** |
58 |
{ |
* listenerList |
59 |
return elts.elementAt(index); |
*/ |
60 |
} |
protected EventListenerList listenerList = new EventListenerList(); |
61 |
|
|
62 |
public void addElement(Object a) |
|
63 |
{ |
//------------------------------------------------------------- |
64 |
int q = elts.size(); |
// Initialization --------------------------------------------- |
65 |
elts.addElement(a); |
//------------------------------------------------------------- |
66 |
fire_up_change_events(ListDataEvent.INTERVAL_ADDED, |
|
67 |
q, |
/** |
68 |
q); |
* Constructor AbstractListModel |
69 |
} |
*/ |
70 |
|
public AbstractListModel() { |
71 |
public void insertElementAt(Object a, int index) |
} // AbstractListModel() |
72 |
{ |
|
73 |
elts.insertElementAt(a, index); |
|
74 |
fire_up_change_events(ListDataEvent.INTERVAL_ADDED, |
//------------------------------------------------------------- |
75 |
index, index); |
// Methods ---------------------------------------------------- |
76 |
} |
//------------------------------------------------------------- |
77 |
|
|
78 |
void remove(int a) |
/** |
79 |
{ |
* addListDataListener |
80 |
elts.removeElementAt(a); |
* @param listener TODO |
81 |
fire_up_change_events(ListDataEvent.INTERVAL_REMOVED, |
*/ |
82 |
a, a); |
public void addListDataListener(ListDataListener listener) { |
83 |
} |
listenerList.add(ListDataListener.class, (EventListener) listener); |
84 |
|
} // addListDataListener() |
85 |
/********************************************* |
|
86 |
* |
/** |
87 |
* handle data change events |
* removeListDataListener |
88 |
* |
* @param listener TODO |
89 |
************/ |
*/ |
90 |
|
public void removeListDataListener(ListDataListener listener) { |
91 |
Vector listeners = new Vector(); |
listenerList.remove(ListDataListener.class, (EventListener) listener); |
92 |
|
} // removeListDataListener() |
93 |
void fire_up_change_events(int type, |
|
94 |
int lower, |
/** |
95 |
int upper) |
* fireContentsChanged |
96 |
{ |
* @param source TODO |
97 |
for (int i=0; i<listeners.size(); i++) |
* @param startIndex TODO |
98 |
{ |
* @param endIndex TODO |
99 |
ListDataListener l = (ListDataListener) listeners.get(i); |
*/ |
100 |
|
protected void fireContentsChanged(Object source, int startIndex, int endIndex) { |
101 |
l.contentsChanged(new ListDataEvent(this, |
|
102 |
type, |
// Variables |
103 |
lower, |
ListDataEvent event; |
104 |
upper)); |
EventListener[] listeners; |
105 |
} |
ListDataListener listener; |
106 |
} |
int index; |
107 |
|
|
108 |
public void addListDataListener(ListDataListener l) |
// Create Event |
109 |
{ |
event = new ListDataEvent(source, ListDataEvent.CONTENTS_CHANGED, |
110 |
listeners.addElement(l); |
startIndex, endIndex); |
111 |
} |
|
112 |
|
// Get Listeners |
113 |
public void removeListDataListener(ListDataListener l) |
listeners = listenerList.getListeners(ListDataListener.class); |
114 |
{ |
|
115 |
listeners.removeElement(l); |
// Process Listeners |
116 |
} |
for (index = 0; index < listeners.length; index++) { |
117 |
} |
listener = (ListDataListener) listeners[index]; |
118 |
|
listener.contentsChanged(event); |
119 |
|
} // for |
120 |
|
|
121 |
|
} // fireContentsChanged() |
122 |
|
|
123 |
|
/** |
124 |
|
* fireIntervalAdded |
125 |
|
* @param source TODO |
126 |
|
* @param startIndex TODO |
127 |
|
* @param endIndex TODO |
128 |
|
*/ |
129 |
|
protected void fireIntervalAdded(Object source, int startIndex, int endIndex) { |
130 |
|
|
131 |
|
// Variables |
132 |
|
ListDataEvent event; |
133 |
|
EventListener[] listeners; |
134 |
|
ListDataListener listener; |
135 |
|
int index; |
136 |
|
|
137 |
|
// Create Event |
138 |
|
event = new ListDataEvent(source, ListDataEvent.INTERVAL_ADDED, |
139 |
|
startIndex, endIndex); |
140 |
|
|
141 |
|
// Get Listeners |
142 |
|
listeners = listenerList.getListeners(ListDataListener.class); |
143 |
|
|
144 |
|
// Process Listeners |
145 |
|
for (index = 0; index < listeners.length; index++) { |
146 |
|
listener = (ListDataListener) listeners[index]; |
147 |
|
listener.intervalAdded(event); |
148 |
|
} // for |
149 |
|
|
150 |
|
} // fireIntervalAdded() |
151 |
|
|
152 |
|
/** |
153 |
|
* fireIntervalRemoved |
154 |
|
* @param source TODO |
155 |
|
* @param startIndex TODO |
156 |
|
* @param endIndex TODO |
157 |
|
*/ |
158 |
|
protected void fireIntervalRemoved(Object source, int startIndex, int endIndex) { |
159 |
|
|
160 |
|
// Variables |
161 |
|
ListDataEvent event; |
162 |
|
EventListener[] listeners; |
163 |
|
ListDataListener listener; |
164 |
|
int index; |
165 |
|
|
166 |
|
// Create Event |
167 |
|
event = new ListDataEvent(source, ListDataEvent.INTERVAL_REMOVED, |
168 |
|
startIndex, endIndex); |
169 |
|
|
170 |
|
// Get Listeners |
171 |
|
listeners = listenerList.getListeners(ListDataListener.class); |
172 |
|
|
173 |
|
// Process Listeners |
174 |
|
for (index = 0; index < listeners.length; index++) { |
175 |
|
listener = (ListDataListener) listeners[index]; |
176 |
|
listener.intervalRemoved(event); |
177 |
|
} // for |
178 |
|
|
179 |
|
} // fireIntervalRemoved() |
180 |
|
|
181 |
|
/** |
182 |
|
* getListeners |
183 |
|
* @param listenerType TODO |
184 |
|
* @returns EventListener[] |
185 |
|
*/ |
186 |
|
public EventListener[] getListeners(Class listenerType) { |
187 |
|
return listenerList.getListeners(listenerType); |
188 |
|
} // getListeners() |
189 |
|
|
190 |
|
/** |
191 |
|
* getElementAt |
192 |
|
* @param index TODO |
193 |
|
* @returns Object |
194 |
|
*/ |
195 |
|
public abstract Object getElementAt(int index); |
196 |
|
|
197 |
|
/** |
198 |
|
* getSize |
199 |
|
* @returns int |
200 |
|
*/ |
201 |
|
public abstract int getSize(); |
202 |
|
|
203 |
|
|
204 |
|
} // AbstractListModel |