001 /*
002 * Copyright 1998-2004 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025 package javax.swing.text.html;
026
027 import java.awt.*;
028 import java.awt.event.*;
029 import java.io.*;
030 import java.net.MalformedURLException;
031 import java.net.URL;
032 import javax.swing.text.*;
033 import javax.swing.*;
034 import javax.swing.border.*;
035 import javax.swing.event.*;
036 import java.util.*;
037
038 /**
039 * CommentView subclasses HiddenTagView to contain a JTextArea showing
040 * a comment. When the textarea is edited the comment is
041 * reset. As this inherits from EditableView if the JTextComponent is
042 * not editable, the textarea will not be visible.
043 *
044 * @author Scott Violet
045 * @version 1.20, 05/05/07
046 */
047 class CommentView extends HiddenTagView {
048 CommentView(Element e) {
049 super (e);
050 }
051
052 protected Component createComponent() {
053 Container host = getContainer();
054 if (host != null && !((JTextComponent) host).isEditable()) {
055 return null;
056 }
057 JTextArea ta = new JTextArea(getRepresentedText());
058 Document doc = getDocument();
059 Font font;
060 if (doc instanceof StyledDocument) {
061 font = ((StyledDocument) doc).getFont(getAttributes());
062 ta.setFont(font);
063 } else {
064 font = ta.getFont();
065 }
066 updateYAlign(font);
067 ta.setBorder(CBorder);
068 ta.getDocument().addDocumentListener(this );
069 ta.setFocusable(isVisible());
070 return ta;
071 }
072
073 void resetBorder() {
074 }
075
076 /**
077 * This is subclassed to put the text on the Comment attribute of
078 * the Element's AttributeSet.
079 */
080 void _updateModelFromText() {
081 JTextComponent textC = getTextComponent();
082 Document doc = getDocument();
083 if (textC != null && doc != null) {
084 String text = textC.getText();
085 SimpleAttributeSet sas = new SimpleAttributeSet();
086 isSettingAttributes = true;
087 try {
088 sas.addAttribute(HTML.Attribute.COMMENT, text);
089 ((StyledDocument) doc).setCharacterAttributes(
090 getStartOffset(), getEndOffset()
091 - getStartOffset(), sas, false);
092 } finally {
093 isSettingAttributes = false;
094 }
095 }
096 }
097
098 JTextComponent getTextComponent() {
099 return (JTextComponent) getComponent();
100 }
101
102 String getRepresentedText() {
103 AttributeSet as = getElement().getAttributes();
104 if (as != null) {
105 Object comment = as.getAttribute(HTML.Attribute.COMMENT);
106 if (comment instanceof String) {
107 return (String) comment;
108 }
109 }
110 return "";
111 }
112
113 static final Border CBorder = new CommentBorder();
114 static final int commentPadding = 3;
115 static final int commentPaddingD = commentPadding * 3;
116
117 static class CommentBorder extends LineBorder {
118 CommentBorder() {
119 super (Color.black, 1);
120 }
121
122 public void paintBorder(Component c, Graphics g, int x, int y,
123 int width, int height) {
124 super .paintBorder(c, g, x + commentPadding, y, width
125 - commentPaddingD, height);
126 }
127
128 public Insets getBorderInsets(Component c) {
129 Insets retI = super .getBorderInsets(c);
130
131 retI.left += commentPadding;
132 retI.right += commentPadding;
133 return retI;
134 }
135
136 public boolean isBorderOpaque() {
137 return false;
138 }
139 } // End of class CommentView.CommentBorder
140 } // End of CommentView
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