Imported GNU Classpath 0.90
[official-gcc.git] / libjava / classpath / gnu / java / awt / peer / swing / SwingButtonPeer.java
blob2357fcbfb0d195de927550a65f05b632e22b925a
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)
9 any later version.
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
19 02110-1301 USA.
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
24 combination.
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.Graphics;
42 import java.awt.Image;
43 import java.awt.Point;
44 import java.awt.event.ActionEvent;
45 import java.awt.event.ActionListener;
46 import java.awt.event.KeyEvent;
47 import java.awt.event.MouseEvent;
48 import java.awt.peer.ButtonPeer;
50 import javax.swing.JButton;
51 import javax.swing.JComponent;
53 /**
54 * A Swing based peer for the AWT button.
56 * @author Roman Kennke (kennke@aicas.com)
58 public class SwingButtonPeer
59 extends SwingComponentPeer
60 implements ButtonPeer
63 /**
64 * A specialized Swing button to be used as AWT button.
66 * @author Roman Kennke (kennke@aicas.com)
68 class SwingButton
69 extends JButton
70 implements SwingComponent
72 /**
73 * Overridden so that this method returns the correct value even without a
74 * peer.
76 * @return the screen location of the button
78 public Point getLocationOnScreen()
80 return SwingButtonPeer.this.getLocationOnScreen();
83 /**
84 * Overridden so that the isShowing method returns the correct value for the
85 * swing button, even if it has no peer on its own.
87 * @return <code>true</code> if the button is currently showing,
88 * <code>false</code> otherwise
90 public boolean isShowing()
92 boolean retVal = false;
93 if (SwingButtonPeer.this.awtComponent != null)
94 retVal = SwingButtonPeer.this.awtComponent.isShowing();
95 return retVal;
98 /**
99 * Overridden, so that the Swing button can create an Image without its
100 * own peer.
102 * @param w the width of the image
103 * @param h the height of the image
105 * @return an image
107 public Image createImage(int w, int h)
109 return SwingButtonPeer.this.createImage(w, h);
113 * Overridden, so that the Swing button can create a Graphics without its
114 * own peer.
116 * @return a graphics instance for the button
118 public Graphics getGraphics()
120 return SwingButtonPeer.this.getGraphics();
124 * Returns this button.
126 * @return this button
128 public JComponent getJComponent()
130 return this;
134 * Handles mouse events by forwarding it to
135 * <code>processMouseEvent()</code> after having retargetted it to this
136 * button.
138 * @param ev the mouse event
140 public void handleMouseEvent(MouseEvent ev)
142 ev.setSource(this);
143 processMouseEvent(ev);
147 * Handles mouse motion events by forwarding it to
148 * <code>processMouseMotionEvent()</code> after having retargetted it to
149 * this button.
151 * @param ev the mouse motion event
153 public void handleMouseMotionEvent(MouseEvent ev)
155 ev.setSource(this);
156 processMouseMotionEvent(ev);
160 * Handles key events by forwarding it to
161 * <code>processKeyEvent()</code> after having retargetted it to this
162 * button.
164 * @param ev the mouse event
166 public void handleKeyEvent(KeyEvent ev)
168 ev.setSource(this);
169 processKeyEvent(ev);
174 * Listens for ActionEvents on the Swing button and triggers corresponding
175 * ActionEvents on the AWT button.
177 * @author Roman Kennke (kennke@aicas.com)
179 class SwingButtonListener implements ActionListener
183 * Receives notification when an action was performend on the button.
185 * @param event the action event
187 public void actionPerformed(ActionEvent event)
189 Button b = (Button) SwingButtonPeer.this.awtComponent;
190 ActionListener[] l = b.getActionListeners();
191 if (l.length == 0)
192 return;
193 ActionEvent ev = new ActionEvent(b, ActionEvent.ACTION_PERFORMED,
194 b.getActionCommand());
195 for (int i = 0; i < l.length; ++i)
196 l[i].actionPerformed(ev);
202 * Constructs a new SwingButtonPeer.
204 * @param theButton the AWT button for this peer
206 public SwingButtonPeer(Button theButton)
208 SwingButton button = new SwingButton();
209 button.setText(theButton.getLabel());
210 button.addActionListener(new SwingButtonListener());
211 init(theButton, button);
215 * Sets the label of the button. This call is forwarded to the setText method
216 * of the managed Swing button.
218 * @param label the label to set
220 public void setLabel(String label)
222 ((SwingButton) swingComponent).setText(label);