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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package javax.swing.plaf.basic;
import sun.swing.DefaultLookup;
import sun.swing.UIAction;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.border.*;
import javax.swing.plaf.*;
/**
* A default L&F implementation of MenuBarUI. This implementation
* is a "combined" view/controller.
*
* @author Georges Saab
* @author David Karlton
* @author Arnaud Weber
*/
public class BasicMenuBarUI extends MenuBarUI {
protected JMenuBar menuBar = null;
protected ContainerListener containerListener;
protected ChangeListener changeListener;
private Handler handler;
public static ComponentUI createUI(JComponent x) {
return new BasicMenuBarUI();
}
static void loadActionMap(LazyActionMap map) {
map.put(new Actions(Actions.TAKE_FOCUS));
}
public void installUI(JComponent c) {
menuBar = (JMenuBar) c;
installDefaults();
installListeners();
installKeyboardActions();
}
protected void installDefaults() {
if (menuBar.getLayout() == null ||
menuBar.getLayout() instanceof UIResource) {
menuBar.setLayout(new DefaultMenuLayout(menuBar,BoxLayout.LINE_AXIS));
}
LookAndFeel.installProperty(menuBar, "opaque", Boolean.TRUE);
LookAndFeel.installBorder(menuBar,"MenuBar.border");
LookAndFeel.installColorsAndFont(menuBar,
"MenuBar.background",
"MenuBar.foreground",
"MenuBar.font");
}
protected void installListeners() {
containerListener = createContainerListener();
changeListener = createChangeListener();
for (int i = 0; i < menuBar.getMenuCount(); i++) {
JMenu menu = menuBar.getMenu(i);
if (menu!=null)
menu.getModel().addChangeListener(changeListener);
}
menuBar.addContainerListener(containerListener);
}
protected void installKeyboardActions() {
InputMap inputMap = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
SwingUtilities.replaceUIInputMap(menuBar,
JComponent.WHEN_IN_FOCUSED_WINDOW, inputMap);
LazyActionMap.installLazyActionMap(menuBar, BasicMenuBarUI.class,
"MenuBar.actionMap");
}
InputMap getInputMap(int condition) {
if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
Object[] bindings = (Object[])DefaultLookup.get
(menuBar, this, "MenuBar.windowBindings");
if (bindings != null) {
return LookAndFeel.makeComponentInputMap(menuBar, bindings);
}
}
return null;
}
public void uninstallUI(JComponent c) {
uninstallDefaults();
uninstallListeners();
uninstallKeyboardActions();
menuBar = null;
}
protected void uninstallDefaults() {
if (menuBar!=null) {
LookAndFeel.uninstallBorder(menuBar);
}
}
protected void uninstallListeners() {
menuBar.removeContainerListener(containerListener);
for (int i = 0; i < menuBar.getMenuCount(); i++) {
JMenu menu = menuBar.getMenu(i);
if (menu !=null)
menu.getModel().removeChangeListener(changeListener);
}
containerListener = null;
changeListener = null;
handler = null;
}
protected void uninstallKeyboardActions() {
SwingUtilities.replaceUIInputMap(menuBar, JComponent.
WHEN_IN_FOCUSED_WINDOW, null);
SwingUtilities.replaceUIActionMap(menuBar, null);
}
protected ContainerListener createContainerListener() {
return getHandler();
}
protected ChangeListener createChangeListener() {
return getHandler();
}
private Handler getHandler() {
if (handler == null) {
handler = new Handler();
}
return handler;
}
public Dimension getMinimumSize(JComponent c) {
return null;
}
public Dimension getMaximumSize(JComponent c) {
return null;
}
private class Handler implements ChangeListener, ContainerListener {
//
// ChangeListener
//
public void stateChanged(ChangeEvent e) {
int i,c;
for(i=0,c = menuBar.getMenuCount() ; i < c ; i++) {
JMenu menu = menuBar.getMenu(i);
if(menu !=null && menu.isSelected()) {
menuBar.getSelectionModel().setSelectedIndex(i);
break;
}
}
}
//
// ContainerListener
//
public void componentAdded(ContainerEvent e) {
Component c = e.getChild();
if (c instanceof JMenu)
((JMenu)c).getModel().addChangeListener(changeListener);
}
public void componentRemoved(ContainerEvent e) {
Component c = e.getChild();
if (c instanceof JMenu)
((JMenu)c).getModel().removeChangeListener(changeListener);
}
}
private static class Actions extends UIAction {
private static final String TAKE_FOCUS = "takeFocus";
Actions(String key) {
super(key);
}
public void actionPerformed(ActionEvent e) {
// TAKE_FOCUS
JMenuBar menuBar = (JMenuBar)e.getSource();
MenuSelectionManager defaultManager = MenuSelectionManager.defaultManager();
MenuElement me[];
MenuElement subElements[];
JMenu menu = menuBar.getMenu(0);
if (menu!=null) {
me = new MenuElement[3];
me[0] = (MenuElement) menuBar;
me[1] = (MenuElement) menu;
me[2] = (MenuElement) menu.getPopupMenu();
defaultManager.setSelectedPath(me);
}
}
}
}