| /* BasicMenuBarUI.java -- |
| Copyright (C) 2002, 2004, 2005 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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 javax.swing.plaf.basic; |
| |
| import java.awt.Dimension; |
| import java.awt.event.ContainerEvent; |
| import java.awt.event.ContainerListener; |
| import java.beans.PropertyChangeEvent; |
| import java.beans.PropertyChangeListener; |
| |
| import javax.swing.BoxLayout; |
| import javax.swing.JComponent; |
| import javax.swing.JMenuBar; |
| import javax.swing.UIDefaults; |
| import javax.swing.UIManager; |
| import javax.swing.event.ChangeEvent; |
| import javax.swing.event.ChangeListener; |
| import javax.swing.plaf.ComponentUI; |
| import javax.swing.plaf.MenuBarUI; |
| |
| /** |
| * UI Delegate for JMenuBar. |
| */ |
| public class BasicMenuBarUI extends MenuBarUI |
| { |
| protected ChangeListener changeListener; |
| |
| /*ContainerListener that listens to the ContainerEvents fired from menu bar*/ |
| protected ContainerListener containerListener; |
| |
| /*Property change listeners that listener to PropertyChangeEvent from menu bar*/ |
| protected PropertyChangeListener propertyChangeListener; |
| |
| /* menu bar for which this UI delegate is for*/ |
| protected JMenuBar menuBar; |
| |
| /** |
| * Creates a new BasicMenuBarUI object. |
| */ |
| public BasicMenuBarUI() |
| { |
| changeListener = createChangeListener(); |
| containerListener = createContainerListener(); |
| propertyChangeListener = new PropertyChangeHandler(); |
| } |
| |
| /** |
| * Creates ChangeListener |
| * |
| * @return The ChangeListener |
| */ |
| protected ChangeListener createChangeListener() |
| { |
| return new ChangeHandler(); |
| } |
| |
| /** |
| * Creates ContainerListener() to listen for ContainerEvents |
| * fired by JMenuBar. |
| * |
| * @return The ContainerListener |
| */ |
| protected ContainerListener createContainerListener() |
| { |
| return new ContainerHandler(); |
| } |
| |
| /** |
| * Factory method to create a BasicMenuBarUI for the given {@link |
| * JComponent}, which should be a {@link JMenuBar}. |
| * |
| * @param b The {@link JComponent} a UI is being created for. |
| * |
| * @return A BasicMenuBarUI for the {@link JComponent}. |
| */ |
| public static ComponentUI createUI(JComponent x) |
| { |
| return new BasicMenuBarUI(); |
| } |
| |
| /** |
| * Returns maximum size for the specified menu bar |
| * |
| * @param c component for which to get maximum size |
| * |
| * @return Maximum size for the specified menu bar |
| */ |
| public Dimension getMaximumSize(JComponent c) |
| { |
| // let layout manager calculate its size |
| return null; |
| } |
| |
| /** |
| * Returns maximum allowed size of JMenuBar. |
| * |
| * @param c menuBar for which to return maximum size |
| * |
| * @return Maximum size of the give menu bar. |
| */ |
| public Dimension getMinimumSize(JComponent c) |
| { |
| // let layout manager calculate its size |
| return null; |
| } |
| |
| /** |
| * Returns preferred size of JMenuBar. |
| * |
| * @param c menuBar for which to return preferred size |
| * |
| * @return Preferred size of the give menu bar. |
| */ |
| public Dimension getPreferredSize(JComponent c) |
| { |
| // let layout manager calculate its size |
| return null; |
| } |
| |
| /** |
| * Initializes any default properties that this UI has from the defaults for |
| * the Basic look and feel. |
| */ |
| protected void installDefaults() |
| { |
| UIDefaults defaults = UIManager.getLookAndFeelDefaults(); |
| |
| menuBar.setBackground(defaults.getColor("MenuBar.background")); |
| menuBar.setBorder(defaults.getBorder("MenuBar.border")); |
| menuBar.setFont(defaults.getFont("MenuBar.font")); |
| menuBar.setForeground(defaults.getColor("MenuBar.foreground")); |
| } |
| |
| /** |
| * This method installs the keyboard actions for the JMenuBar. |
| */ |
| protected void installKeyboardActions() |
| { |
| // FIXME: implement |
| } |
| |
| /** |
| * This method installs the listeners needed for this UI to function. |
| */ |
| protected void installListeners() |
| { |
| menuBar.addContainerListener(containerListener); |
| menuBar.addPropertyChangeListener(propertyChangeListener); |
| } |
| |
| /** |
| * Installs and initializes all fields for this UI delegate. Any properties |
| * of the UI that need to be initialized and/or set to defaults will be |
| * done now. It will also install any listeners necessary. |
| * |
| * @param c The {@link JComponent} that is having this UI installed. |
| */ |
| public void installUI(JComponent c) |
| { |
| super.installUI(c); |
| menuBar = (JMenuBar) c; |
| menuBar.setLayout(new BoxLayout(menuBar, BoxLayout.X_AXIS)); |
| installDefaults(); |
| installListeners(); |
| installKeyboardActions(); |
| } |
| |
| /** |
| * This method uninstalls the defaults and nulls any objects created during |
| * install. |
| */ |
| protected void uninstallDefaults() |
| { |
| menuBar.setBackground(null); |
| menuBar.setBorder(null); |
| menuBar.setFont(null); |
| menuBar.setForeground(null); |
| } |
| |
| /** |
| * This method reverses the work done in installKeyboardActions. |
| */ |
| protected void uninstallKeyboardActions() |
| { |
| // FIXME: implement. |
| } |
| |
| /** |
| * Unregisters all the listeners that this UI delegate was using. |
| */ |
| protected void uninstallListeners() |
| { |
| menuBar.removeContainerListener(containerListener); |
| menuBar.removePropertyChangeListener(propertyChangeListener); |
| } |
| |
| /** |
| * Performs the opposite of installUI. Any properties or resources that need |
| * to be cleaned up will be done now. It will also uninstall any listeners |
| * it has. In addition, any properties of this UI will be nulled. |
| * |
| * @param c The {@link JComponent} that is having this UI uninstalled. |
| */ |
| public void uninstallUI(JComponent c) |
| { |
| uninstallDefaults(); |
| uninstallListeners(); |
| uninstallKeyboardActions(); |
| menuBar = null; |
| } |
| |
| protected class ChangeHandler implements ChangeListener |
| { |
| public void stateChanged(ChangeEvent event) |
| { |
| } |
| } |
| |
| /** |
| * This class handles ContainerEvents fired by JMenuBar. It revalidates |
| * and repaints menu bar whenever menu is added or removed from it. |
| */ |
| protected class ContainerHandler implements ContainerListener |
| { |
| /** |
| * This method is called whenever menu is added to the menu bar |
| * |
| * @param e The ContainerEvent. |
| */ |
| public void componentAdded(ContainerEvent e) |
| { |
| menuBar.revalidate(); |
| menuBar.repaint(); |
| } |
| |
| /** |
| * This method is called whenever menu is removed from the menu bar. |
| * |
| * @param e The ContainerEvent. |
| */ |
| public void componentRemoved(ContainerEvent e) |
| { |
| menuBar.revalidate(); |
| menuBar.repaint(); |
| } |
| } |
| |
| /** |
| * This class handles PropertyChangeEvents fired from the JMenuBar |
| */ |
| protected class PropertyChangeHandler implements PropertyChangeListener |
| { |
| /** |
| * This method is called whenever one of the properties of the MenuBar |
| * changes. |
| * |
| * @param e The PropertyChangeEvent. |
| */ |
| public void propertyChange(PropertyChangeEvent e) |
| { |
| if (e.getPropertyName().equals("borderPainted")) |
| menuBar.repaint(); |
| if (e.getPropertyName().equals("margin")) |
| menuBar.repaint(); |
| } |
| } |
| } |