1 /*
2 * Copyright (c) 2000, 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
29 import javax.swing.event.*;
30 import java.io.Serializable;
31
32
33 /**
34 * This class provides the ChangeListener part of the
35 * SpinnerModel interface that should be suitable for most concrete SpinnerModel
36 * implementations. Subclasses must provide an implementation of the
37 * <code>setValue</code>, <code>getValue</code>, <code>getNextValue</code> and
38 * <code>getPreviousValue</code> methods.
39 *
40 * @see JSpinner
41 * @see SpinnerModel
42 * @see SpinnerListModel
43 * @see SpinnerNumberModel
44 * @see SpinnerDateModel
45 *
46 * @author Hans Muller
47 * @since 1.4
48 */
49 public abstract class AbstractSpinnerModel implements SpinnerModel, Serializable
50 {
51
52 /**
53 * Only one ChangeEvent is needed per model instance since the
54 * event's only (read-only) state is the source property. The source
55 * of events generated here is always "this".
56 */
57 private transient ChangeEvent changeEvent = null;
58
59
60 /**
61 * The list of ChangeListeners for this model. Subclasses may
62 * store their own listeners here.
63 */
64 protected EventListenerList listenerList = new EventListenerList();
65
66
67 /**
68 * Adds a ChangeListener to the model's listener list. The
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1 /*
2 * Copyright (c) 2000, 2014, 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
29 import javax.swing.event.*;
30 import java.io.Serializable;
31
32
33 /**
34 * This class provides the ChangeListener part of the
35 * SpinnerModel interface that should be suitable for most concrete SpinnerModel
36 * implementations. Subclasses must provide an implementation of the
37 * <code>setValue</code>, <code>getValue</code>, <code>getNextValue</code> and
38 * <code>getPreviousValue</code> methods.
39 *
40 * @see JSpinner
41 * @see SpinnerModel
42 * @see SpinnerListModel
43 * @see SpinnerNumberModel
44 * @see SpinnerDateModel
45 *
46 * @author Hans Muller
47 * @since 1.4
48 */
49 @SuppressWarnings("serial") // Field contents are not serializable across versions
50 public abstract class AbstractSpinnerModel implements SpinnerModel, Serializable
51 {
52
53 /**
54 * Only one ChangeEvent is needed per model instance since the
55 * event's only (read-only) state is the source property. The source
56 * of events generated here is always "this".
57 */
58 private transient ChangeEvent changeEvent = null;
59
60
61 /**
62 * The list of ChangeListeners for this model. Subclasses may
63 * store their own listeners here.
64 */
65 protected EventListenerList listenerList = new EventListenerList();
66
67
68 /**
69 * Adds a ChangeListener to the model's listener list. The
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