001 /* BasicTextAreaUI.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; 040 041 042 import java.beans.PropertyChangeEvent; 043 044 import javax.swing.JComponent; 045 import javax.swing.JTextArea; 046 import javax.swing.UIDefaults; 047 import javax.swing.plaf.ComponentUI; 048 import javax.swing.text.Element; 049 import javax.swing.text.PlainView; 050 import javax.swing.text.View; 051 import javax.swing.text.WrappedPlainView; 052 053 public class BasicTextAreaUI extends BasicTextUI 054 { 055 public static ComponentUI createUI(JComponent comp) 056 { 057 return new BasicTextAreaUI(); 058 } 059 060 public BasicTextAreaUI() 061 { 062 // Nothing to do here. 063 } 064 065 /** 066 * Create the view. Returns a WrappedPlainView if the text area 067 * has lineWrap set to true, otherwise returns a PlainView. If 068 * lineWrap is true has to check whether the wrap style is word 069 * or character and return an appropriate WrappedPlainView. 070 * 071 * @param elem the element to create a View for 072 * @return an appropriate View for the element 073 */ 074 public View create(Element elem) 075 { 076 JTextArea comp = (JTextArea) getComponent(); 077 if (comp.getLineWrap()) 078 { 079 if (comp.getWrapStyleWord()) 080 return new WrappedPlainView(elem, true); 081 else 082 return new WrappedPlainView(elem, false); 083 } 084 else 085 return new PlainView(elem); 086 } 087 088 /** 089 * Returns the prefix for entries in the {@link UIDefaults} table. 090 * 091 * @return "TextArea" 092 */ 093 protected String getPropertyPrefix() 094 { 095 return "TextArea"; 096 } 097 098 /** 099 * Receives notification whenever one of the text component's bound 100 * properties changes. This changes the view to WrappedPlainView 101 * if setLineWrap(true) is called, and back to PlainView if 102 * setLineWrap(false) is called. 103 * 104 * @param ev the property change event 105 */ 106 protected void propertyChange(PropertyChangeEvent ev) 107 { 108 JTextArea comp = (JTextArea) getComponent(); 109 if (ev.getPropertyName() == "lineWrap" 110 || ev.getPropertyName() == "wrapStyleWord") 111 { 112 // Changes the View (without modifying the document or it's listeners). 113 setView(create(textComponent.getDocument().getDefaultRootElement())); 114 } 115 } 116 }