001 /* BasicTextFieldUI.java 002 Copyright (C) 2004, 2006, Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 039 package javax.swing.plaf.basic; 040 041 import java.awt.Color; 042 import java.beans.PropertyChangeEvent; 043 044 import javax.swing.JComponent; 045 import javax.swing.UIDefaults; 046 import javax.swing.plaf.ColorUIResource; 047 import javax.swing.plaf.ComponentUI; 048 import javax.swing.text.Element; 049 import javax.swing.text.FieldView; 050 import javax.swing.text.View; 051 052 public class BasicTextFieldUI extends BasicTextUI 053 { 054 public BasicTextFieldUI() 055 { 056 super(); 057 } 058 059 public View create(Element elem) 060 { 061 return new FieldView(elem); 062 } 063 064 public static ComponentUI createUI(JComponent c) 065 { 066 return new BasicTextFieldUI(); 067 } 068 069 /** 070 * Returns the prefix for entries in the {@link UIDefaults} table. 071 * 072 * @return "TextField" 073 */ 074 protected String getPropertyPrefix() 075 { 076 return "TextField"; 077 } 078 079 public void installUI(JComponent c) 080 { 081 super.installUI(c); 082 } 083 084 /** 085 * Receives notification whenever one of the text component's bound 086 * properties changes. Here we check for the editable and enabled 087 * properties and adjust the background color accordingly. 088 * 089 * <p>The colors are only changed if they are not a 090 * <code>ColorUIResource</code>.</p> 091 * 092 * @param event the property change event 093 */ 094 protected void propertyChange(PropertyChangeEvent event) 095 { 096 if (event.getPropertyName().equals("editable")) 097 { 098 // Changing the color only if the current background is an instance of 099 // ColorUIResource is the behavior of the RI. 100 if (textComponent.getBackground() instanceof ColorUIResource) 101 { 102 Color c = null; 103 Color old = textComponent.getBackground(); 104 String prefix = getPropertyPrefix(); 105 if (! textComponent.isEnabled()) 106 c = SharedUIDefaults.getColor(prefix + ".disabledBackground"); 107 if (c == null && ! textComponent.isEditable()) 108 c = SharedUIDefaults.getColor(prefix + ".inactiveBackground"); 109 if (c == null) 110 c = SharedUIDefaults.getColor(prefix + ".background"); 111 if (c != null && c != old) 112 { 113 textComponent.setBackground(c); 114 } 115 } 116 } 117 } 118 }