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/* MetalInternalFrameUI.java

   Copyright (C) 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.metal;

import java.beans.PropertyChangeEvent;

import java.beans.PropertyChangeListener;

import javax.swing.ActionMap;

import javax.swing.JComponent;

import javax.swing.JInternalFrame;

import javax.swing.SwingUtilities;

import javax.swing.plaf.ComponentUI;

import javax.swing.plaf.basic.BasicInternalFrameUI;

/**

 * A UI delegate for the {@link JInternalFrame} component.

 */

public class MetalInternalFrameUI

  extends BasicInternalFrameUI

{

  /**

   * The key (<code>JInternalFrame.isPalette</code>) for the client property

   * that controls whether the internal frame is displayed using the palette

   * style.

   */

  protected static String IS_PALETTE = "JInternalFrame.isPalette";

  /**

   * Constructs a new instance of <code>MetalInternalFrameUI</code>.

   *

   * @param frame  the frame.

   */

  public MetalInternalFrameUI(JInternalFrame frame)

  {

    super(frame);

  }

  /**

   * Returns an instance of <code>MetalInternalFrameUI</code>.

   *

   * @param component the internal frame.

   *

   * @return an instance of <code>MetalInternalFrameUI</code>.

   */

  public static ComponentUI createUI(JComponent component)

  {

    return new MetalInternalFrameUI((JInternalFrame) component);

  }

  /**

   * Sets the fields and properties for the component.

   *

   * @param c  the component.

   */

  public void installUI(JComponent c)

  {

    super.installUI(c);

    JInternalFrame f = (JInternalFrame) c;

    boolean isPalette = false;

    Boolean p = (Boolean) f.getClientProperty(IS_PALETTE);

    if (p != null)

      isPalette = p.booleanValue();

    setPalette(isPalette);

  }

  /**

   * Creates and returns the component that will be used for the north pane

   * of the {@link JInternalFrame}.

   *

   * @param w  the internal frame.

   *

   * @return A new instance of {@link MetalInternalFrameTitlePane}.

   */

  protected JComponent createNorthPane(JInternalFrame w)

  {

    titlePane = new MetalInternalFrameTitlePane(w);

    return titlePane;

  }

  /**

   * Sets the state of the {@link JInternalFrame} to reflect whether or not

   * it is using the palette style.  When a frame is displayed as a palette,

   * it uses a different border and the title pane is drawn differently.

   *

   * @param isPalette  use the palette style?

   */

  public void setPalette(boolean isPalette)

  {

    MetalInternalFrameTitlePane title = (MetalInternalFrameTitlePane) northPane;

    title.setPalette(isPalette);

    if (isPalette)

      frame.setBorder(new MetalBorders.PaletteBorder());

    else

      frame.setBorder(new MetalBorders.InternalFrameBorder());

  }

  /** A listener that is used to handle IS_PALETTE property changes. */

  private PropertyChangeListener paletteListener;

  /**

   * Adds the required listeners.

   */

  protected void installListeners()

  {

    super.installListeners();

    paletteListener = new PropertyChangeListener()

    {

      public void propertyChange(PropertyChangeEvent e)

      {

        if (e.getPropertyName().equals(IS_PALETTE))

          {

            if (Boolean.TRUE.equals(e.getNewValue()))

              setPalette(true);

            else

              setPalette(false);

          }

      }

    };

    frame.addPropertyChangeListener(paletteListener);

  }

  /**

   * Removes the listeners used.

   */

  protected void uninstallListeners()

  {

    super.uninstallListeners();

    frame.removePropertyChangeListener(IS_PALETTE, paletteListener);

    paletteListener = null;

  }

  /**

   * Installs keyboard actions. This is overridden to remove the

   * <code>showSystemMenu</code> Action that is installed by the

   * <code>BasicInternalFrameUI</code>, since Metal JInternalFrames don't have

   * a system menu.

   */

  protected void installKeyboardActions()

  {

    super.installKeyboardActions();

    ActionMap am = SwingUtilities.getUIActionMap(frame);

    if (am != null)

      {

        am.remove("showSystemMenu");

      }

  }

}