Source for javax.swing.plaf.metal.MetalButtonUI

   1: /* MetalButtonUI.java
   2:    Copyright (C) 2005 Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package javax.swing.plaf.metal;
  40: 
  41: import java.awt.Color;
  42: 
  43: import javax.swing.AbstractButton;
  44: import javax.swing.JComponent;
  45: import javax.swing.JToolBar;
  46: import javax.swing.UIDefaults;
  47: import javax.swing.UIManager;
  48: import javax.swing.plaf.ComponentUI;
  49: import javax.swing.plaf.basic.BasicButtonUI;
  50: 
  51: /**
  52:  * The Metal Look & Feel implementation for
  53:  * {@link javax.swing.AbstractButton}s.
  54:  *
  55:  * @author Roman Kennke (roman@kennke.org)
  56:  */
  57: public class MetalButtonUI
  58:   extends BasicButtonUI
  59: {
  60: 
  61:   /** The cached MetalButtonUI instance. */
  62:   private static MetalButtonUI instance = null;
  63: 
  64:   /** The color for the focus border. */
  65:   protected Color focusColor;
  66: 
  67:   /** The color that indicates a selected button. */
  68:   protected Color selectColor;
  69: 
  70:   /** The color for disabled button labels. */
  71:   protected Color disabledTextColor;
  72: 
  73:   /**
  74:    * Creates a new instance of MetalButtonUI.
  75:    */
  76:   public MetalButtonUI()
  77:   {
  78:     super();
  79:     focusColor = getFocusColor();
  80:     selectColor = getSelectColor();
  81:     disabledTextColor = getDisabledTextColor();
  82:   }
  83: 
  84:   /**
  85:    * Returns the color for the focus border.
  86:    *
  87:    * @return the color for the focus border
  88:    */
  89:   protected Color getFocusColor()
  90:   {
  91:     UIDefaults def = UIManager.getLookAndFeelDefaults();
  92:     return def.getColor(getPropertyPrefix() + ".focus");
  93:   }
  94: 
  95:   /**
  96:    * Returns the color that indicates a selected button.
  97:    *
  98:    * @return the color that indicates a selected button
  99:    */
 100:   protected Color getSelectColor()
 101:   {
 102:     UIDefaults def = UIManager.getLookAndFeelDefaults();
 103:     return def.getColor(getPropertyPrefix() + ".select");
 104:   }
 105: 
 106:   /**
 107:    * Returns the color for the text label of disabled buttons.
 108:    *
 109:    * @return the color for the text label of disabled buttons
 110:    */
 111:   protected Color getDisabledTextColor()
 112:   {
 113:     UIDefaults def = UIManager.getLookAndFeelDefaults();
 114:     return def.getColor(getPropertyPrefix() + ".disabledText");
 115:   }
 116: 
 117:   /**
 118:    * Returns an instance of MetalButtonUI.
 119:    *
 120:    * @param component a button for which a UI instance should be returned
 121:    */
 122:   public static ComponentUI createUI(JComponent component)
 123:   {
 124:     if (instance == null)
 125:       instance = new MetalButtonUI();
 126:     return instance;
 127:   }
 128: 
 129:   /**
 130:    * Install the Look & Feel defaults for Buttons.
 131:    *
 132:    * @param button the button for which to install the Look & Feel
 133:    */
 134:   public void installDefaults(AbstractButton button)
 135:   {
 136:     super.installDefaults(button);
 137: 
 138:     UIDefaults defaults = UIManager.getLookAndFeelDefaults();
 139:     button.setFont(defaults.getFont("Button.font"));
 140: 
 141:     if (button.getParent() instanceof JToolBar)
 142:       button.setBorder(MetalBorders.getToolbarButtonBorder());
 143:   }
 144: 
 145: }