1 /* BasicTextAreaUI.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 
42 import java.beans.PropertyChangeEvent;
43 
44 import javax.swing.JComponent;
45 import javax.swing.JTextArea;
46 import javax.swing.UIDefaults;
47 import javax.swing.plaf.ComponentUI;
48 import javax.swing.text.Element;
49 import javax.swing.text.PlainView;
50 import javax.swing.text.View;
51 import javax.swing.text.WrappedPlainView;
52 
53 public class BasicTextAreaUI extends BasicTextUI
54 {
createUI(JComponent comp)55   public static ComponentUI createUI(JComponent comp)
56   {
57     return new BasicTextAreaUI();
58   }
59 
BasicTextAreaUI()60   public BasicTextAreaUI()
61   {
62     // Nothing to do here.
63   }
64 
65   /**
66    * Create the view.  Returns a WrappedPlainView if the text area
67    * has lineWrap set to true, otherwise returns a PlainView.  If
68    * lineWrap is true has to check whether the wrap style is word
69    * or character and return an appropriate WrappedPlainView.
70    *
71    * @param elem the element to create a View for
72    * @return an appropriate View for the element
73    */
create(Element elem)74   public View create(Element elem)
75   {
76     JTextArea comp = (JTextArea) getComponent();
77     if (comp.getLineWrap())
78       {
79         if (comp.getWrapStyleWord())
80           return new WrappedPlainView(elem, true);
81         else
82           return new WrappedPlainView(elem, false);
83       }
84     else
85       return new PlainView(elem);
86   }
87 
88   /**
89    * Returns the prefix for entries in the {@link UIDefaults} table.
90    *
91    * @return "TextArea"
92    */
getPropertyPrefix()93   protected String getPropertyPrefix()
94   {
95     return "TextArea";
96   }
97 
98   /**
99    * 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    */
propertyChange(PropertyChangeEvent ev)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 }
117