libjava/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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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  * DefaultListCellRenderer. This class is responsible for rendering  list
  50  * cells.
  51  *
  52  * @author Andrew Selkirk
  53  * @version 1.0
  54  */
  55 public class DefaultListCellRenderer extends JLabel
  56   implements ListCellRenderer, Serializable
  57 {
  58   private static final long serialVersionUID = 7708947179685189462L;
  59
  60   public static class UIResource extends DefaultListCellRenderer
  61     implements javax.swing.plaf.UIResource
  62   {
  63     public UIResource()
  64     {
  65     }
  66   }
  67
  68   /**
  69    * This border is used whenever renderer doesn't have a focus.
  70    */
  71   protected static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
  72
  73   /**
  74    * getListCellRendererComponent
  75    *
  76    * @param list JList list for the 'value'
  77    * @param value object that should be rendered in the cell
  78    * @param index index of the cell
  79    * @param isSelected draw cell highlighted if isSelected is true
  80    * @param cellHasFocus draw focus rectangle around cell if the cell has
  81    *        focus
  82    *
  83    * @return Component that will be painted to the desired cell.
  84    */
  85   public Component getListCellRendererComponent(JList list, Object value,
  86                                                 int index, boolean isSelected,
  87                                                 boolean cellHasFocus)
  88   {
  89     String s = value.toString();
  90     setText(s);
  91     setOpaque(true);
  92     setHorizontalAlignment(LEFT);
  93
  94     if (isSelected)
  95       {
  96         setBackground(list.getSelectionBackground());
  97         setForeground(list.getSelectionForeground());
  98       }
  99     else
 100       {
 101         setBackground(list.getBackground());
 102         setForeground(list.getForeground());
 103       }
 104
 105     setEnabled(list.isEnabled());
 106     setFont(list.getFont());
 107
 108     // Use focusCellHighlightBorder when renderer has focus and
 109     // noFocusBorder otherwise
 110
 111     if (cellHasFocus)
 112       setBorder(UIManager.getBorder("List.focusCellHighlightBorder"));
 113     else
 114       setBorder(noFocusBorder);
 115
 116     return this;
 117   }
 118
 119   public void validate()
 120   {
 121   }
 122
 123   public void revalidate()
 124   {
 125   }
 126
 127   public void repaint(long tm, int x, int y, int w, int h)
 128   {
 129   }
 130
 131   public void repaint(Rectangle rect)
 132   {
 133   }
 134
 135   protected void firePropertyChange(String propertyName, Object oldValue,
 136                                     Object newValue)
 137   {
 138   }
 139
 140   public void firePropertyChange(String propertyName, byte oldValue,
 141                                  byte newValue)
 142   {
 143   }
 144
 145   public void firePropertyChange(String propertyName, char oldValue,
 146                                  char newValue)
 147   {
 148   }
 149
 150   public void firePropertyChange(String propertyName, short oldValue,
 151                                  short newValue)
 152   {
 153   }
 154
 155   public void firePropertyChange(String propertyName, int oldValue,
 156                                  int newValue)
 157   {
 158   }
 159
 160   public void firePropertyChange(String propertyName, long oldValue,
 161                                  long newValue)
 162   {
 163   }
 164
 165   public void firePropertyChange(String propertyName, float oldValue,
 166                                  float newValue)
 167   {
 168   }
 169
 170   public void firePropertyChange(String propertyName, double oldValue,
 171                                  double newValue)
 172   {
 173   }
 174
 175   public void firePropertyChange(String propertyName, boolean oldValue,
 176                                  boolean newValue)
 177   {
 178   }
 179 }