basiclookandfeel.java

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/* BasicLookAndFeel.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., 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 javax.swing.plaf.basic;

import java.awt.AWTEvent;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.AWTEventListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.util.Enumeration;
import java.util.ResourceBundle;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.BorderFactory;
import javax.swing.KeyStroke;
import javax.swing.LookAndFeel;
import javax.swing.MenuSelectionManager;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
import javax.swing.plaf.BorderUIResource;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.DimensionUIResource;
import javax.swing.plaf.FontUIResource;
import javax.swing.plaf.IconUIResource;
import javax.swing.plaf.InsetsUIResource;

/**
 * BasicLookAndFeel
 * @author Andrew Selkirk
 */
public abstract class BasicLookAndFeel extends LookAndFeel
  implements Serializable
{

  /**
   * Helps closing menu popups when the user clicks outside of any menu area.
   * This is implemented as an AWTEventListener that listens on the event
   * queue directly, grabs all mouse events from there and finds out of they
   * are targetted at a menu/submenu/menubar or not. If not,
   * the MenuSelectionManager is messaged to close the currently opened menus,
   * if any.
   * 
   * @author Roman Kennke ([e-mail])
   */
  private class PopupHelper implements AWTEventListener
  {

    /**
     * Receives an event from the event queue.
     *
     * @param event
     */
    public void eventDispatched(AWTEvent event)
    {
      if (event instanceof MouseEvent)
        {
          MouseEvent mouseEvent = (MouseEvent) event;
          if (mouseEvent.getID() == MouseEvent.MOUSE_PRESSED)
            mousePressed(mouseEvent);
        }
    }

    /**
     * Handles mouse pressed events from the event queue.
     *
     * @param ev the mouse pressed event
     */
    private void mousePressed(MouseEvent ev)
    {
      // Autoclose all menus managed by the MenuSelectionManager.
      MenuSelectionManager m = MenuSelectionManager.defaultManager();
      Component target = ev.getComponent();
      if (target instanceof Container)
        target = ((Container) target).findComponentAt(ev.getPoint());
      if (! m.isComponentPartOfCurrentMenu(target))
        m.clearSelectedPath();
    }

  }

  /**
   * An action that can play an audio file.
   *
   * @author Roman Kennke ([e-mail])
   */
  private class AudioAction extends AbstractAction
  {
    /**
     * The UIDefaults key that specifies the sound.
     */
    Object key;

    /**
     * Creates a new AudioAction.
     *
     * @param key the key that describes the audio action, normally a filename
     *        of an audio file relative to the current package
     */
    AudioAction(Object key)
    {
      this.key = key;
    }

    /**
     * Plays the sound represented by this action.
     *
     * @param event the action event that triggers this audio action
     */
    public void actionPerformed(ActionEvent event)
    {
      // We only can handle strings for now.
      if (key instanceof String)
        {
          String name = UIManager.getString(key);
          InputStream stream = getClass().getResourceAsStream(name);
          try
            {
              Clip clip = AudioSystem.getClip();
              AudioInputStream audioStream =
                AudioSystem.getAudioInputStream(stream);
              clip.open(audioStream);
            }
          catch (LineUnavailableException ex)
            {
              // Nothing we can do about it.
            }
          catch (IOException ex)
            {
              // Nothing we can do about it.
            }
          catch (UnsupportedAudioFileException e)
            {
              // Nothing we can do about it.
            }
        }
    }
  }

  static final long serialVersionUID = -6096995660290287879L;

  /**
   * Helps closing menu popups when user clicks outside of the menu area.
   */
  private transient PopupHelper popupHelper;

  private ActionMap audioActionMap;

  /**
   * Creates a new instance of the Basic look and feel.
   */
  public BasicLookAndFeel()
  {
    // TODO
  }

  /**
   * Creates and returns a new instance of the default resources for this look 
   * and feel.
   * 
   * @return The UI defaults.
   */
  public UIDefaults getDefaults()
  {
    // Variables
    UIDefaults def = new UIDefaults();
    // Initialize Class Defaults
    initClassDefaults(def);
    // Initialize System Colour Defaults
    initSystemColorDefaults(def);
    // Initialize Component Defaults
    initComponentDefaults(def);
    // Return UI Defaults
    return def;
  }

  /**
   * Populates the <code>defaults</code> table with mappings between class IDs 
   * and fully qualified class names for the UI delegates.
   * 
   * @param defaults  the defaults table (<code>null</code> not permitted).
   */
  protected void initClassDefaults(UIDefaults defaults)
  {
    // Variables
    Object[] uiDefaults;
    // Initialize Class Defaults
    uiDefaults = new Object[] {
      "ButtonUI", "javax.swing.plaf.basic.BasicButtonUI",
      "CheckBoxMenuItemUI", "javax.swing.plaf.basic.BasicCheckBoxMenuItemUI",
      "CheckBoxUI", "javax.swing.plaf.basic.BasicCheckBoxUI",
      "ColorChooserUI", "javax.swing.plaf.basic.BasicColorChooserUI",
      "ComboBoxUI", "javax.swing.plaf.basic.BasicComboBoxUI",
      "DesktopIconUI", "javax.swing.plaf.basic.BasicDesktopIconUI",
      "DesktopPaneUI", "javax.swing.plaf.basic.BasicDesktopPaneUI",
      "EditorPaneUI", "javax.swing.plaf.basic.BasicEditorPaneUI",
      "FileChooserUI", "javax.swing.plaf.basic.BasicFileChooserUI",
      "FormattedTextFieldUI", "javax.swing.plaf.basic.BasicFormattedTextFieldUI",
      "InternalFrameUI", "javax.swing.plaf.basic.BasicInternalFrameUI",
      "LabelUI", "javax.swing.plaf.basic.BasicLabelUI",
      "ListUI", "javax.swing.plaf.basic.BasicListUI",
      "MenuBarUI", "javax.swing.plaf.basic.BasicMenuBarUI",
      "MenuItemUI", "javax.swing.plaf.basic.BasicMenuItemUI",
      "MenuUI", "javax.swing.plaf.basic.BasicMenuUI",
      "OptionPaneUI", "javax.swing.plaf.basic.BasicOptionPaneUI",
      "PanelUI", "javax.swing.plaf.basic.BasicPanelUI",
      "PasswordFieldUI", "javax.swing.plaf.basic.BasicPasswordFieldUI",
      "PopupMenuSeparatorUI", "javax.swing.plaf.basic.BasicPopupMenuSeparatorUI",