Source for javax.swing.plaf.metal.MetalSplitPaneUI

   1: /* MetalSplitPaneUI.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: import java.util.HashMap;
  43: 
  44: import javax.swing.JComponent;
  45: import javax.swing.UIDefaults;
  46: import javax.swing.UIManager;
  47: import javax.swing.plaf.ComponentUI;
  48: import javax.swing.plaf.basic.BasicSplitPaneUI;
  49: import javax.swing.plaf.basic.BasicSplitPaneDivider;
  50: 
  51: public class MetalSplitPaneUI
  52:   extends BasicSplitPaneUI
  53: {
  54: 
  55:   /** The UI instances for MetalSplitPaneUIs */
  56:   private static HashMap instances;
  57: 
  58:   /**
  59:    * Constructs a new instance of MetalSplitPaneUI.
  60:    */
  61:   public MetalSplitPaneUI()
  62:   {
  63:     super();
  64:   }
  65: 
  66:   /**
  67:    * Returns an instance of MetalSplitPaneUI.
  68:    *
  69:    * @param component the component for which we return an UI instance
  70:    *
  71:    * @return an instance of MetalSplitPaneUI
  72:    */
  73:   public static ComponentUI createUI(JComponent component)
  74:   {
  75:     if (instances == null)
  76:       instances = new HashMap();
  77: 
  78:     Object o = instances.get(component);
  79:     MetalSplitPaneUI instance;
  80:     if (o == null)
  81:       {
  82:     instance = new MetalSplitPaneUI();
  83:     instances.put(component, instance);
  84:       }
  85:     else
  86:       instance = (MetalSplitPaneUI) o;
  87: 
  88:     return instance;
  89:   }
  90: 
  91:   /**
  92:    * Returns the divider that is used by the <code>JSplitPane</code>.
  93:    *
  94:    * The divider returned by this method is a {@link BasicSplitPaneDivider}
  95:    * that is drawn using the Metal look.
  96:    *
  97:    * @return the default divider to use for <code>JSplitPane</code>s. 
  98:    */
  99:   public BasicSplitPaneDivider createDefaultDivider()
 100:   {
 101:     UIDefaults defaults = UIManager.getLookAndFeelDefaults();
 102:     Color light = defaults.getColor("SplitPane.highlight");
 103:     Color dark = defaults.getColor("SplitPane.darkShadow");
 104:     return new MetalSplitPaneDivider(this, light, dark);
 105:   }
 106: }