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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

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1+/*
2+ * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package javax.swing;
27+
28+import javax.swing.event.*;
29+import java.io.Serializable;
30+import java.util.EventListener;
31+
32+/**
33+ * A generic implementation of SingleSelectionModel.
34+ * <p>
35+ * <strong>Warning:</strong>
36+ * Serialized objects of this class will not be compatible with
37+ * future Swing releases. The current serialization support is
38+ * appropriate for short term storage or RMI between applications running
39+ * the same version of Swing. As of 1.4, support for long term storage
40+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
41+ * has been added to the <code>java.beans</code> package.
42+ * Please see {@link java.beans.XMLEncoder}.
43+ *
44+ * @author Dave Moore
45+ */
46+public class DefaultSingleSelectionModel implements SingleSelectionModel,
47+Serializable {
48+ /* Only one ModelChangeEvent is needed per model instance since the
49+ * event's only (read-only) state is the source property. The source
50+ * of events generated here is always "this".
51+ */
52+ protected transient ChangeEvent changeEvent = null;
53+ /** The collection of registered listeners */
54+ protected EventListenerList listenerList = new EventListenerList();
55+
56+ private int index = -1;
57+
58+ // implements javax.swing.SingleSelectionModel
59+ public int getSelectedIndex() {
60+ return index;
61+ }
62+
63+ // implements javax.swing.SingleSelectionModel
64+ public void setSelectedIndex(int index) {
65+ if (this.index != index) {
66+ this.index = index;
67+ fireStateChanged();
68+ }
69+ }
70+
71+ // implements javax.swing.SingleSelectionModel
72+ public void clearSelection() {
73+ setSelectedIndex(-1);
74+ }
75+
76+ // implements javax.swing.SingleSelectionModel
77+ public boolean isSelected() {
78+ boolean ret = false;
79+ if (getSelectedIndex() != -1) {
80+ ret = true;
81+ }
82+ return ret;
83+ }
84+
85+ /**
86+ * Adds a <code>ChangeListener</code> to the button.
87+ */
88+ public void addChangeListener(ChangeListener l) {
89+ listenerList.add(ChangeListener.class, l);
90+ }
91+
92+ /**
93+ * Removes a <code>ChangeListener</code> from the button.
94+ */
95+ public void removeChangeListener(ChangeListener l) {
96+ listenerList.remove(ChangeListener.class, l);
97+ }
98+
99+ /**
100+ * Returns an array of all the change listeners
101+ * registered on this <code>DefaultSingleSelectionModel</code>.
102+ *
103+ * @return all of this model's <code>ChangeListener</code>s
104+ * or an empty
105+ * array if no change listeners are currently registered
106+ *
107+ * @see #addChangeListener
108+ * @see #removeChangeListener
109+ *
110+ * @since 1.4
111+ */
112+ public ChangeListener[] getChangeListeners() {
113+ return listenerList.getListeners(ChangeListener.class);
114+ }
115+
116+ /**
117+ * Notifies all listeners that have registered interest for
118+ * notification on this event type. The event instance
119+ * is created lazily.
120+ * @see EventListenerList
121+ */
122+ protected void fireStateChanged() {
123+ // Guaranteed to return a non-null array
124+ Object[] listeners = listenerList.getListenerList();
125+ // Process the listeners last to first, notifying
126+ // those that are interested in this event
127+ for (int i = listeners.length-2; i>=0; i-=2) {
128+ if (listeners[i]==ChangeListener.class) {
129+ // Lazily create the event:
130+ if (changeEvent == null)
131+ changeEvent = new ChangeEvent(this);
132+ ((ChangeListener)listeners[i+1]).stateChanged(changeEvent);
133+ }
134+ }
135+ }
136+
137+ /**
138+ * Returns an array of all the objects currently registered as
139+ * <code><em>Foo</em>Listener</code>s
140+ * upon this model.
141+ * <code><em>Foo</em>Listener</code>s
142+ * are registered using the <code>add<em>Foo</em>Listener</code> method.
143+ * <p>
144+ * You can specify the <code>listenerType</code> argument
145+ * with a class literal, such as <code><em>Foo</em>Listener.class</code>.
146+ * For example, you can query a <code>DefaultSingleSelectionModel</code>
147+ * instance <code>m</code>
148+ * for its change listeners
149+ * with the following code:
150+ *
151+ * <pre>ChangeListener[] cls = (ChangeListener[])(m.getListeners(ChangeListener.class));</pre>
152+ *
153+ * If no such listeners exist,
154+ * this method returns an empty array.
155+ *
156+ * @param listenerType the type of listeners requested;
157+ * this parameter should specify an interface
158+ * that descends from <code>java.util.EventListener</code>
159+ * @return an array of all objects registered as
160+ * <code><em>Foo</em>Listener</code>s
161+ * on this model,
162+ * or an empty array if no such
163+ * listeners have been added
164+ * @exception ClassCastException if <code>listenerType</code> doesn't
165+ * specify a class or interface that implements
166+ * <code>java.util.EventListener</code>
167+ *
168+ * @see #getChangeListeners
169+ *
170+ * @since 1.3
171+ */
172+ public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
173+ return listenerList.getListeners(listenerType);
174+ }
175+}