Source for javax.swing.plaf.metal.MetalComboBoxEditor

   1: /* MetalComboBoxEditor.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.awt.Component;
  43: import java.awt.Graphics;
  44: import java.awt.Insets;
  45: 
  46: import javax.swing.JTextField;
  47: import javax.swing.plaf.basic.BasicComboBoxEditor;
  48: import javax.swing.plaf.metal.MetalLookAndFeel;
  49: import javax.swing.plaf.metal.MetalBorders.Flush3DBorder;
  50: 
  51: /**
  52:  * An editor used by the {@link MetalComboBoxUI} class.
  53:  */
  54: public class MetalComboBoxEditor extends BasicComboBoxEditor
  55: {
  56:   /**
  57:    * A border used for the {@link JTextField} component.
  58:    */
  59:   static class MetalComboBoxEditorBorder extends Flush3DBorder
  60:   {
  61:     /**
  62:      * Creates a new border instance.
  63:      */
  64:     public MetalComboBoxEditorBorder()
  65:     {
  66:       // Nothing to do here.
  67:     }
  68:     
  69:     /**
  70:      * Paints the border for the specified component.
  71:      * 
  72:      * @param c  the component (ignored).
  73:      * @param g  the graphics device.
  74:      * @param x  the x-coordinate.
  75:      * @param y  the y-coordinate.
  76:      * @param w  the width.
  77:      * @param h  the height.
  78:      */
  79:     public void paintBorder(Component c, Graphics g, int x, int y, int w, 
  80:         int h)
  81:     {   
  82:       Color savedColor = g.getColor();
  83:       if (c.isEnabled())
  84:         g.setColor(MetalLookAndFeel.getControlDarkShadow());  
  85:       else
  86:         g.setColor(MetalLookAndFeel.getControlShadow());
  87:       g.drawLine(x, y, x + w - 1, y);
  88:       g.drawLine(x, y, x, y + h - 2);
  89:       g.drawLine(x + 2, y + h - 2, x + w - 1, y + h - 2);
  90:       g.setColor(MetalLookAndFeel.getControl());
  91:       g.drawLine(x + 1, y + h - 2, x + 1, y + h - 2);
  92:       g.setColor(MetalLookAndFeel.getWhite());
  93:       g.drawLine(x, y + h - 1, x + w - 1, y + h - 1);
  94:       g.setColor(savedColor);
  95:     }
  96: 
  97:     /**
  98:      * Measures the width of this border.
  99:      *
 100:      * @param c the component whose border is to be measured.
 101:      *
 102:      * @return an Insets object whose <code>left</code>, <code>right</code>,
 103:      *         <code>top</code> and <code>bottom</code> fields indicate the
 104:      *         width of the border at the respective edge, which is zero
 105:      *         for the default implementation provided by AbstractButton.
 106:      *
 107:      * @see #getBorderInsets(java.awt.Component, java.awt.Insets)
 108:      */
 109:     public Insets getBorderInsets(Component c)
 110:     {
 111:       return editorBorderInsets;
 112:     }    
 113:   }
 114:     
 115:   /**
 116:    * A subclass of {@link MetalComboBoxEditor} that implements the 
 117:    * {@link javax.swing.plaf.UIResource} interface.
 118:    */
 119:   public static class UIResource extends MetalComboBoxEditor
 120:     implements javax.swing.plaf.UIResource
 121:   {
 122:     /**
 123:      * Creates a new instance.
 124:      */
 125:     public UIResource()
 126:     {
 127:       // Nothing to do here.
 128:     }
 129:   }
 130:   
 131:   /** The editor's border insets. */
 132:   protected static Insets editorBorderInsets = new Insets(4, 2, 4, 0);
 133:   
 134:   /**
 135:    * Creates a new editor.
 136:    */
 137:   public MetalComboBoxEditor()
 138:   {
 139:     super();
 140:     editor.setBorder(new MetalComboBoxEditorBorder());
 141:   }
 142:   
 143: }