Source for javax.swing.DefaultListCellRenderer

   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:  * 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: }