TinyScrollPaneUI.java

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*	Tiny Look and Feel                                                         *
*                                                                              *
*  (C) Copyright 2003 - 2007 Hans Bickel                                       *
*                                                                              *
*   For licensing information and credits, please refer to the                 *
*   comment in file de.muntjak.tinylookandfeel.TinyLookAndFeel                 *
*                                                                              *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

package de.muntjak.tinylookandfeel;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import javax.swing.JComponent;
import javax.swing.JScrollBar;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.metal.MetalScrollBarUI;
import javax.swing.plaf.metal.MetalScrollPaneUI;

/**
 * TinyScrollPaneUI
 * 
 * @version 1.0
 * @author Hans Bickel
 */
public class TinyScrollPaneUI extends MetalScrollPaneUI
  implements PropertyChangeListener
{

  /**
   * Creates the UI delegate for the given component.
   *
   * @param mainColor The component to create its UI delegate.
   * @return The UI delegate for the given component.
   */
  public static ComponentUI createUI(JComponent c)
  {
    return new TinyScrollPaneUI();
  }

  /**
   * Installs some default values for the given scrollpane.
   * The free standing property is disabled here.
   *
   * @param mainColor The reference of the scrollpane to install its default values.
   */
  public void installUI(JComponent c)
  {
    super.installUI(c);
    
	// Note: It never happened before Java 1.5 that scrollbar is null
	JScrollBar sb = scrollpane.getHorizontalScrollBar();
	if(sb != null) {
		sb.putClientProperty(MetalScrollBarUI.FREE_STANDING_PROP, Boolean.FALSE);
	}
    
    sb = scrollpane.getVerticalScrollBar();
    if(sb != null) {
		sb.putClientProperty(MetalScrollBarUI.FREE_STANDING_PROP, Boolean.FALSE);
	}
  }

  /**
   * Creates a property change listener that does nothing inorder to prevent the
   * free standing scrollbars.
   *
   * @return An empty property change listener.
   */
  protected PropertyChangeListener createScrollBarSwapListener()
  {
    return this;
  }

  /**
   * Simply ignore any change.
   *
   * @param event The property change event.
   */
  public void propertyChange(PropertyChangeEvent e)
  {
  }
}