1 /*
2 * Copyright (c) 1996, 2013, 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
33 * Extend this class to create a {@code ComponentEvent} listener
34 * and override the methods for the events of interest. (If you implement the
35 * {@code ComponentListener} interface, you have to define all of
36 * the methods in it. This abstract class defines null methods for them
37 * all, so you can only have to define methods for events you care about.)
38 * <P>
39 * Create a listener object using your class and then register it with a
40 * component using the component's {@code addComponentListener}
41 * method. When the component's size, location, or visibility
42 * changes, the relevant method in the listener object is invoked,
43 * and the {@code ComponentEvent} is passed to it.
44 *
45 * @see ComponentEvent
46 * @see ComponentListener
47 * @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/componentlistener.html">Tutorial: Writing a Component Listener</a>
48 *
49 * @author Carl Quinn
50 * @since 1.1
51 */
52 public abstract class ComponentAdapter implements ComponentListener {
53 /**
54 * Invoked when the component's size changes.
55 */
56 public void componentResized(ComponentEvent e) {}
57
58 /**
59 * Invoked when the component's position changes.
60 */
61 public void componentMoved(ComponentEvent e) {}
62
63 /**
64 * Invoked when the component has been made visible.
65 */
66 public void componentShown(ComponentEvent e) {}
67
68 /**
69 * Invoked when the component has been made invisible.
70 */
71 public void componentHidden(ComponentEvent e) {}
72 }
|
1 /*
2 * Copyright (c) 1996, 2020, 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
33 * Extend this class to create a {@code ComponentEvent} listener
34 * and override the methods for the events of interest. (If you implement the
35 * {@code ComponentListener} interface, you have to define all of
36 * the methods in it. This abstract class defines null methods for them
37 * all, so you can only have to define methods for events you care about.)
38 * <P>
39 * Create a listener object using your class and then register it with a
40 * component using the component's {@code addComponentListener}
41 * method. When the component's size, location, or visibility
42 * changes, the relevant method in the listener object is invoked,
43 * and the {@code ComponentEvent} is passed to it.
44 *
45 * @see ComponentEvent
46 * @see ComponentListener
47 * @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/componentlistener.html">Tutorial: Writing a Component Listener</a>
48 *
49 * @author Carl Quinn
50 * @since 1.1
51 */
52 public abstract class ComponentAdapter implements ComponentListener {
53
54 /**
55 * Constructs a {@code ComponentAdapter}.
56 */
57 protected ComponentAdapter() {}
58
59 /**
60 * Invoked when the component's size changes.
61 */
62 public void componentResized(ComponentEvent e) {}
63
64 /**
65 * Invoked when the component's position changes.
66 */
67 public void componentMoved(ComponentEvent e) {}
68
69 /**
70 * Invoked when the component has been made visible.
71 */
72 public void componentShown(ComponentEvent e) {}
73
74 /**
75 * Invoked when the component has been made invisible.
76 */
77 public void componentHidden(ComponentEvent e) {}
78 }
|