/*******************************************************************************
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;

import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.JRadioButton;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.metal.MetalRadioButtonUI;


/**
 * TinyRadioButtonUI
 * 
 * @version 1.0
 * @author Hans Bickel
 */
@SuppressWarnings (
{ "all" } )
public class TinyRadioButtonUI extends MetalRadioButtonUI
{

  Component c;


  /** the only instance of the radiobuttonUI */
  private static final TinyRadioButtonUI radioButtonUI = new TinyRadioButtonUI ();


  /* the only instance of the stroke for the focus */
  private static BasicStroke focusStroke = new BasicStroke ( 1.0f,
      BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 1.0f, new float []
      { 1.0f, 1.0f }, 0.0f );


  /* the only instance of the radiobutton icon */
  private static TinyRadioButtonIcon radioButton;


  /**
   * Creates the singleton for the UI
   * 
   * @see javax.swing.plaf.ComponentUI#createUI(JComponent)
   */
  public static ComponentUI createUI ( JComponent c )
  {
    if ( c instanceof JRadioButton )
    {
      JRadioButton jb = ( JRadioButton ) c;
      jb.setRolloverEnabled ( true );
    }

    return radioButtonUI;
  }


  /**
   * Installs the icon for the UI
   * 
   * @see javax.swing.plaf.ComponentUI#installUI(JComponent)
   */
  public void installUI ( JComponent c )
  {
    super.installUI ( c );

    icon = getRadioButton ();

    if ( !Theme.buttonEnter [ Theme.style ] )
      return;
    if ( !c.isFocusable () )
      return;

    InputMap km = ( InputMap ) UIManager.get ( getPropertyPrefix ()
        + "focusInputMap" );

    if ( km != null )
    {
      km.put ( KeyStroke.getKeyStroke ( KeyEvent.VK_ENTER, 0, false ),
          "pressed" );
      km.put ( KeyStroke.getKeyStroke ( KeyEvent.VK_ENTER, 0, true ),
          "released" );
    }
  }


  /**
   * Returns the skinned Icon
   * 
   * @return TinyRadioButtonIcon
   */
  protected TinyRadioButtonIcon getRadioButton ()
  {
    if ( radioButton == null )
      radioButton = new TinyRadioButtonIcon ();

    return radioButton;
  }


  /**
   * Paints the focus for the radiobutton
   * 
   * @see javax.swing.plaf.metal.MetalRadioButtonUI#paintFocus(java.awt.Graphics,
   *      java.awt.Rectangle, java.awt.Dimension)
   */
  protected void paintFocus ( Graphics g, Rectangle t, Dimension arg2 )
  {
    if ( !Theme.buttonFocus [ Theme.style ] )
      return;

    Graphics2D g2d = ( Graphics2D ) g;
    g2d.setColor ( Color.black );
    g2d.setStroke ( focusStroke );

    int x1 = t.x - 1;
    int y1 = t.y - 1;
    int x2 = x1 + t.width + 1;
    int y2 = y1 + t.height + 1;

    g2d.drawLine ( x1, y1, x2, y1 );
    g2d.drawLine ( x1, y1, x1, y2 );
    g2d.drawLine ( x1, y2, x2, y2 );
    g2d.drawLine ( x2, y1, x2, y2 );
  }
}