old-autovect-branch/libjava/classpath/javax/swing/DefaultListCellRenderer.java

   1 /* DefaultListCellRenderer.java --
   2    Copyright (C) 2002, 2004 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;
  40
  41 import java.awt.Component;
  42 import java.awt.Rectangle;
  43 import java.io.Serializable;
  44
  45 import javax.swing.border.Border;
  46 import javax.swing.border.EmptyBorder;
  47
  48 /**
  49  * The default implementation {@link ListCellRenderer}. It provides a standard
  50  * renderer for data objects of all types via {@link Object#toString()}.
  51  *
  52  * @author Andrew Selkirk
  53  */
  54 public class DefaultListCellRenderer extends JLabel
  55   implements ListCellRenderer, Serializable
  56 {
  57   private static final long serialVersionUID = 7708947179685189462L;
  58
  59   /**
  60    * Subclasses <code>DefaultListCellRenderers</code> and implements
  61    * {@link javax.swing.plaf.UIResource}. This is used by
  62    * {@link javax.swing.plaf.ListUI} subclasses to provide a default for
  63    * the <code>List.cellRenderer</code> property. If you want to override
  64    * this property, use <code>DefaultListCellRenderer</code> or a subclass.
  65    */
  66   public static class UIResource extends DefaultListCellRenderer
  67     implements javax.swing.plaf.UIResource
  68   {
  69     public UIResource()
  70     {
  71       super();
  72     }
  73   }
  74
  75   /**
  76    * This border is used whenever renderer doesn't have a focus.
  77    */
  78   protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
  79
  80   /**
  81    * getListCellRendererComponent
  82    *
  83    * @param list JList list for the 'value'
  84    * @param value object that should be rendered in the cell
  85    * @param index index of the cell
  86    * @param isSelected draw cell highlighted if isSelected is true
  87    * @param cellHasFocus draw focus rectangle around cell if the cell has
  88    *        focus
  89    *
  90    * @return Component that will be painted to the desired cell.
  91    */
  92   public Component getListCellRendererComponent(JList list, Object value,
  93                                                 int index, boolean isSelected,
  94                                                 boolean cellHasFocus)
  95   {
  96     String s = value.toString();
  97     setText(s);
  98     setOpaque(true);
  99     setHorizontalAlignment(LEFT);
 100
 101     if (isSelected)
 102       {
 103         setBackground(list.getSelectionBackground());
 104         setForeground(list.getSelectionForeground());
 105       }
 106     else
 107       {
 108         setBackground(list.getBackground());
 109         setForeground(list.getForeground());
 110       }
 111
 112     setEnabled(list.isEnabled());
 113     setFont(list.getFont());
 114
 115     // Use focusCellHighlightBorder when renderer has focus and
 116     // noFocusBorder otherwise
 117
 118     if (cellHasFocus)
 119       setBorder(UIManager.getBorder("List.focusCellHighlightBorder"));
 120     else
 121       setBorder(noFocusBorder);
 122
 123     return this;
 124   }
 125
 126   public void validate()
 127   {
 128     // Overridden to do nothing.
 129   }
 130
 131   public void revalidate()
 132   {
 133     // Overridden to do nothing.
 134   }
 135
 136   public void repaint(long tm, int x, int y, int w, int h)
 137   {
 138     // Overridden to do nothing.
 139   }
 140
 141   public void repaint(Rectangle rect)
 142   {
 143     // Overridden to do nothing.
 144   }
 145
 146   protected void firePropertyChange(String propertyName, Object oldValue,
 147                                     Object newValue)
 148   {
 149     // Overridden to do nothing.
 150   }
 151
 152   public void firePropertyChange(String propertyName, byte oldValue,
 153                                  byte newValue)
 154   {
 155     // Overridden to do nothing.
 156   }
 157
 158   public void firePropertyChange(String propertyName, char oldValue,
 159                                  char newValue)
 160   {
 161     // Overridden to do nothing.
 162   }
 163
 164   public void firePropertyChange(String propertyName, short oldValue,
 165                                  short newValue)
 166   {
 167     // Overridden to do nothing.
 168   }
 169
 170   public void firePropertyChange(String propertyName, int oldValue,
 171                                  int newValue)
 172   {
 173     // Overridden to do nothing.
 174   }
 175
 176   public void firePropertyChange(String propertyName, long oldValue,
 177                                  long newValue)
 178   {
 179     // Overridden to do nothing.
 180   }
 181
 182   public void firePropertyChange(String propertyName, float oldValue,
 183                                  float newValue)
 184   {
 185     // Overridden to do nothing.
 186   }
 187
 188   public void firePropertyChange(String propertyName, double oldValue,
 189                                  double newValue)
 190   {
 191     // Overridden to do nothing.
 192   }
 193
 194   public void firePropertyChange(String propertyName, boolean oldValue,
 195                                  boolean newValue)
 196   {
 197     // Overridden to do nothing.
 198   }
 199 }