| /* SwingCheckboxPeer.java -- A Swing based peer for AWT checkboxes |
| Copyright (C) 2007 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.java.awt.peer.swing; |
| |
| import java.awt.Checkbox; |
| import java.awt.CheckboxGroup; |
| import java.awt.Container; |
| import java.awt.Graphics; |
| import java.awt.Image; |
| import java.awt.Point; |
| import java.awt.event.FocusEvent; |
| import java.awt.event.ItemEvent; |
| import java.awt.event.ItemListener; |
| import java.awt.event.KeyEvent; |
| import java.awt.event.MouseEvent; |
| import java.awt.peer.CheckboxPeer; |
| |
| import javax.swing.JCheckBox; |
| import javax.swing.JComponent; |
| import javax.swing.JToggleButton; |
| |
| /** |
| * A CheckboxPeer implementation that is backed by the Swing JCheckBox. |
| */ |
| public class SwingCheckboxPeer extends SwingComponentPeer implements |
| CheckboxPeer { |
| |
| /** |
| * A spezialized Swing checkbox used to paint the checkbox for the |
| * AWT checkbox. |
| */ |
| private class SwingCheckbox |
| extends JCheckBox |
| implements SwingComponent |
| { |
| Checkbox checkbox; |
| |
| SwingCheckbox(Checkbox checkbox) |
| { |
| this.checkbox = checkbox; |
| } |
| |
| /** |
| * Returns this checkbox. |
| * |
| * @return <code>this</code> |
| */ |
| public JComponent getJComponent() |
| { |
| return this; |
| } |
| |
| /** |
| * Handles mouse events by forwarding it to |
| * <code>processMouseEvent()</code>. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseEvent(MouseEvent ev) |
| { |
| ev.setSource(this); |
| processMouseEvent(ev); |
| } |
| |
| /** |
| * Handles mouse motion events by forwarding it to |
| * <code>processMouseMotionEvent()</code>. |
| * |
| * @param ev the mouse motion event |
| */ |
| public void handleMouseMotionEvent(MouseEvent ev) |
| { |
| ev.setSource(this); |
| processMouseMotionEvent(ev); |
| } |
| |
| /** |
| * Handles key events by forwarding it to <code>processKeyEvent()</code>. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleKeyEvent(KeyEvent ev) |
| { |
| ev.setSource(this); |
| processKeyEvent(ev); |
| } |
| |
| /** |
| * Handles focus events by forwarding it to |
| * <code>processFocusEvent()</code>. |
| * |
| * @param ev the Focus event |
| */ |
| public void handleFocusEvent(FocusEvent ev) |
| { |
| processFocusEvent(ev); |
| } |
| |
| /** |
| * Overridden so that this method returns the correct value even without a |
| * peer. |
| * |
| * @return the screen location of the button |
| */ |
| public Point getLocationOnScreen() |
| { |
| return SwingCheckboxPeer.this.getLocationOnScreen(); |
| } |
| |
| /** |
| * Overridden so that the isShowing method returns the correct value |
| * for the swing button, even if it has no peer on its own. |
| * |
| * @return <code>true</code> if the button is currently showing, |
| * <code>false</code> otherwise |
| */ |
| public boolean isShowing() |
| { |
| boolean retVal = false; |
| if (checkbox != null) |
| retVal = checkbox.isShowing(); |
| return retVal; |
| } |
| |
| /** |
| * Overridden, so that the Swing button can create an Image without its |
| * own peer. |
| * |
| * @param w the width of the image |
| * @param h the height of the image |
| * |
| * @return an image |
| */ |
| public Image createImage(int w, int h) |
| { |
| return SwingCheckboxPeer.this.createImage(w, h); |
| } |
| |
| public Graphics getGraphics() |
| { |
| return SwingCheckboxPeer.this.getGraphics(); |
| } |
| |
| public Container getParent() |
| { |
| Container par = null; |
| if (checkbox != null) |
| par = checkbox.getParent(); |
| return par; |
| } |
| |
| public void requestFocus() { |
| SwingCheckboxPeer.this.requestFocus(awtComponent, false, true, 0); |
| } |
| |
| public boolean requestFocus(boolean temporary) { |
| return SwingCheckboxPeer.this.requestFocus(awtComponent, temporary, |
| true, 0); |
| } |
| } |
| |
| /** |
| * Listens for ActionEvents on the Swing button and triggers corresponding |
| * ActionEvents on the AWT button. |
| */ |
| class SwingCheckboxListener implements ItemListener |
| { |
| Checkbox awtCheckbox; |
| |
| SwingCheckboxListener(Checkbox checkbox) |
| { |
| awtCheckbox = checkbox; |
| } |
| |
| /** |
| * Receives notification when an action was performend on the button. |
| * |
| * @param event the action event |
| */ |
| public void itemStateChanged(ItemEvent event) |
| { |
| awtCheckbox.setState(event.getStateChange()==ItemEvent.SELECTED); |
| ItemListener[] l = awtCheckbox.getItemListeners(); |
| if (l.length == 0) |
| return; |
| ItemEvent ev = new ItemEvent(awtCheckbox, ItemEvent.ITEM_STATE_CHANGED, |
| awtCheckbox, event.getStateChange()); |
| for (int i = 0; i < l.length; ++i) |
| l[i].itemStateChanged(ev); |
| } |
| } |
| |
| /** |
| * Creates a new SwingCheckboxPeer instance. |
| */ |
| public SwingCheckboxPeer(Checkbox checkbox) |
| { |
| SwingCheckbox swingCheckbox = new SwingCheckbox(checkbox); |
| swingCheckbox.addItemListener(new SwingCheckboxListener(checkbox)); |
| |
| init(checkbox, swingCheckbox); |
| setLabel(checkbox.getLabel()); |
| setState(checkbox.getState()); |
| } |
| |
| public void setCheckboxGroup(CheckboxGroup group) |
| { |
| // TODO: Implement this. |
| } |
| |
| public void setLabel(String label) |
| { |
| ((JToggleButton) swingComponent).setText(label); |
| } |
| |
| public void setState(boolean state) |
| { |
| ((JToggleButton) swingComponent).setSelected(state); |
| } |
| |
| } |