Source for javax.swing.plaf.basic.BasicTextFieldUI

   1: /* BasicTextFieldUI.java
   2:    Copyright (C) 2004, 2006,  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.basic;
  40: 
  41: import java.beans.PropertyChangeEvent;
  42: 
  43: import javax.swing.JComponent;
  44: import javax.swing.UIDefaults;
  45: import javax.swing.plaf.ColorUIResource;
  46: import javax.swing.plaf.ComponentUI;
  47: import javax.swing.text.Element;
  48: import javax.swing.text.FieldView;
  49: import javax.swing.text.View;
  50: 
  51: public class BasicTextFieldUI extends BasicTextUI
  52: {
  53:   public BasicTextFieldUI()
  54:   {
  55:     super();
  56:   }
  57: 
  58:   public View create(Element elem)
  59:   {
  60:     return new FieldView(elem);
  61:   }
  62:   
  63:   public static ComponentUI createUI(JComponent c)
  64:   {
  65:     return new BasicTextFieldUI();
  66:   }
  67: 
  68:   /**
  69:    * Returns the prefix for entries in the {@link UIDefaults} table.
  70:    *
  71:    * @return "TextField"
  72:    */
  73:   protected String getPropertyPrefix()
  74:   {
  75:     return "TextField";
  76:   }
  77: 
  78:   public void installUI(JComponent c)
  79:   {
  80:     super.installUI(c);
  81:   }
  82: 
  83:   /**
  84:    * Receives notification whenever one of the text component's bound
  85:    * properties changes. Here we check for the editable and enabled
  86:    * properties and adjust the background color accordingly.
  87:    * 
  88:    * <p>The colors are only changed if they are not a
  89:    * <code>ColorUIResource</code>.</p>
  90:    *
  91:    * @param event the property change event
  92:    */
  93:   protected void propertyChange(PropertyChangeEvent event)
  94:   {
  95:     if (event.getPropertyName().equals("editable"))
  96:       {
  97:         boolean editable = ((Boolean) event.getNewValue()).booleanValue();
  98:         
  99:         // Changing the color only if the current background is an instance of
 100:         // ColorUIResource is the behavior of the RI.
 101:         if (textComponent.getBackground() instanceof ColorUIResource)
 102:           textComponent.setBackground(editable ? background : inactiveBackground);
 103:       }
 104:   }
 105: }