001/* BasicTextAreaUI.java -- 002 Copyright (C) 2004, 2006, Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.swing.plaf.basic; 040 041 042import java.beans.PropertyChangeEvent; 043 044import javax.swing.JComponent; 045import javax.swing.JTextArea; 046import javax.swing.UIDefaults; 047import javax.swing.plaf.ComponentUI; 048import javax.swing.text.Element; 049import javax.swing.text.PlainView; 050import javax.swing.text.View; 051import javax.swing.text.WrappedPlainView; 052 053public 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}