1 /* SwingButtonPeer.java -- A Swing based peer for AWT buttons
2 Copyright (C) 2006 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
38 package gnu.java.awt.peer.swing;
40 import java.awt.Button;
41 import java.awt.Container;
42 import java.awt.Graphics;
43 import java.awt.Image;
44 import java.awt.Point;
45 import java.awt.event.ActionEvent;
46 import java.awt.event.ActionListener;
47 import java.awt.event.KeyEvent;
48 import java.awt.event.MouseEvent;
49 import java.awt.peer.ButtonPeer;
51 import javax.swing.JButton;
52 import javax.swing.JComponent;
55 * A Swing based peer for the AWT button.
57 * @author Roman Kennke (kennke@aicas.com)
59 public class SwingButtonPeer
60 extends SwingComponentPeer
65 * A specialized Swing button to be used as AWT button.
67 * @author Roman Kennke (kennke@aicas.com)
71 implements SwingComponent
75 SwingButton(Button button)
81 * Overridden so that this method returns the correct value even without a
84 * @return the screen location of the button
86 public Point getLocationOnScreen()
88 return SwingButtonPeer.this.getLocationOnScreen();
92 * Overridden so that the isShowing method returns the correct value for the
93 * swing button, even if it has no peer on its own.
95 * @return <code>true</code> if the button is currently showing,
96 * <code>false</code> otherwise
98 public boolean isShowing()
100 boolean retVal = false;
102 retVal = button.isShowing();
107 * Overridden, so that the Swing button can create an Image without its
110 * @param w the width of the image
111 * @param h the height of the image
115 public Image createImage(int w, int h)
117 return SwingButtonPeer.this.createImage(w, h);
121 * Overridden, so that the Swing button can create a Graphics without its
124 * @return a graphics instance for the button
126 public Graphics getGraphics()
128 return SwingButtonPeer.this.getGraphics();
132 * Returns this button.
134 * @return this button
136 public JComponent getJComponent()
142 * Handles mouse events by forwarding it to
143 * <code>processMouseEvent()</code> after having retargetted it to this
146 * @param ev the mouse event
148 public void handleMouseEvent(MouseEvent ev)
151 processMouseEvent(ev);
155 * Handles mouse motion events by forwarding it to
156 * <code>processMouseMotionEvent()</code> after having retargetted it to
159 * @param ev the mouse motion event
161 public void handleMouseMotionEvent(MouseEvent ev)
164 processMouseMotionEvent(ev);
168 * Handles key events by forwarding it to
169 * <code>processKeyEvent()</code> after having retargetted it to this
172 * @param ev the mouse event
174 public void handleKeyEvent(KeyEvent ev)
180 public Container getParent()
182 Container par = null;
184 par = button.getParent();
190 * Listens for ActionEvents on the Swing button and triggers corresponding
191 * ActionEvents on the AWT button.
193 * @author Roman Kennke (kennke@aicas.com)
195 class SwingButtonListener implements ActionListener
199 * Receives notification when an action was performend on the button.
201 * @param event the action event
203 public void actionPerformed(ActionEvent event)
205 Button b = (Button) SwingButtonPeer.this.awtComponent;
206 ActionListener[] l = b.getActionListeners();
209 ActionEvent ev = new ActionEvent(b, ActionEvent.ACTION_PERFORMED,
210 b.getActionCommand());
211 for (int i = 0; i < l.length; ++i)
212 l[i].actionPerformed(ev);
218 * Constructs a new SwingButtonPeer.
220 * @param theButton the AWT button for this peer
222 public SwingButtonPeer(Button theButton)
224 SwingButton button = new SwingButton(theButton);
225 button.setText(theButton.getLabel());
226 button.addActionListener(new SwingButtonListener());
227 init(theButton, button);
231 * Sets the label of the button. This call is forwarded to the setText method
232 * of the managed Swing button.
234 * @param label the label to set
236 public void setLabel(String label)
238 ((SwingButton) swingComponent).setText(label);