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.Component;
  42: import java.awt.Dimension;
  43: import java.awt.Graphics;
  44: import java.awt.Insets;
  45: 
  46: import javax.swing.JTextField;
  47: import javax.swing.border.AbstractBorder;
  48: import javax.swing.plaf.basic.BasicComboBoxEditor;
  49: import javax.swing.plaf.metal.MetalLookAndFeel;
  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 AbstractBorder
  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:       g.translate(x, y);
  83:       if (MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme)
  84:         {
  85:           g.setColor(MetalLookAndFeel.getControlDarkShadow());
  86:           g.drawLine(0, 0, w - 1, 0);
  87:           g.drawLine(0, 0, 0, h - 1);
  88:           g.drawLine(0, h - 1, w - 1, h - 1);
  89:           g.setColor(MetalLookAndFeel.getControlShadow());
  90:           g.drawLine(1, 1, w - 2, 1);
  91:           g.drawLine(1, 1, 1, h - 2);
  92:           g.drawLine(1, h - 2, w - 1, h - 2);
  93:           g.drawLine(w - 1, 1, w - 1, h - 2);
  94:         }
  95:       else
  96:         {
  97:           g.setColor(MetalLookAndFeel.getControlDarkShadow());
  98:           g.drawLine(0, 0, w - 1, 0);
  99:           g.drawLine(0, 0, 0, h - 2);
 100:           g.drawLine(0, h - 2, w - 1, h - 2);
 101:           g.setColor(MetalLookAndFeel.getControlHighlight());
 102:           g.drawLine(1, 1, w - 1, 1);
 103:           g.drawLine(1, 1, 1, h - 1);
 104:           g.drawLine(1, h - 1, w - 1, h - 1);
 105:           g.setColor(MetalLookAndFeel.getControl());
 106:           g.drawLine(1, h - 2, 1, h - 2);
 107:         }
 108:       g.translate(-x, -y);
 109:     }
 110: 
 111:     /**
 112:      * Measures the width of this border.
 113:      *
 114:      * @param c the component whose border is to be measured.
 115:      *
 116:      * @return an Insets object whose <code>left</code>, <code>right</code>,
 117:      *         <code>top</code> and <code>bottom</code> fields indicate the
 118:      *         width of the border at the respective edge, which is zero
 119:      *         for the default implementation provided by AbstractButton.
 120:      *
 121:      * @see #getBorderInsets(java.awt.Component, java.awt.Insets)
 122:      */
 123:     public Insets getBorderInsets(Component c)
 124:     {
 125:       return editorBorderInsets;
 126:     }    
 127:   }
 128:     
 129:   /**
 130:    * A subclass of {@link MetalComboBoxEditor} that implements the 
 131:    * {@link javax.swing.plaf.UIResource} interface.
 132:    */
 133:   public static class UIResource extends MetalComboBoxEditor
 134:     implements javax.swing.plaf.UIResource
 135:   {
 136:     /**
 137:      * Creates a new instance.
 138:      */
 139:     public UIResource()
 140:     {
 141:       // Nothing to do here.
 142:     }
 143:   }
 144: 
 145:   /**
 146:    * A special textfield implementation for the MetalComboBoxEditor.
 147:    */
 148:   private class EditorTextField extends JTextField
 149:   {
 150:     EditorTextField(String s, int columns)
 151:     {
 152:       super(s, columns);
 153:     }
 154: 
 155:     /**
 156:      * Tests seem to show that the textfield in MetalComboBoxEditors have
 157:      * a height + 4.
 158:      */
 159:     public Dimension getPreferredSize()
 160:     {
 161:       Dimension size = super.getPreferredSize();
 162:       size.height += 4;
 163:       return size;
 164:     }
 165: 
 166:     /**
 167:      * Tests seem to show that the textfield in MetalComboBoxEditors have
 168:      * a height + 4.
 169:      */
 170:     public Dimension getMinimumSize()
 171:     {
 172:       Dimension size = super.getMinimumSize();
 173:       size.height += 4;
 174:       return size;
 175:     }
 176:   }
 177: 
 178:   /** The editor's border insets. */
 179:   protected static Insets editorBorderInsets = new Insets(2, 2, 2, 0);
 180:   
 181:   /**
 182:    * Creates a new editor.
 183:    */
 184:   public MetalComboBoxEditor()
 185:   {
 186:     editor = new EditorTextField("", 9);
 187:     editor.setBorder(new MetalComboBoxEditorBorder());
 188:   }
 189:   
 190: }