1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package javax.swing.text.html;
26
27 import java.awt.*;
28 import java.awt.event.*;
29 import java.io.*;
30 import java.net.MalformedURLException;
31 import java.net.URL;
32 import javax.swing.text.*;
33 import javax.swing.*;
34 import javax.swing.border.*;
35 import javax.swing.event.*;
36 import java.util.*;
37
38 /**
39 * CommentView subclasses HiddenTagView to contain a JTextArea showing
40 * a comment. When the textarea is edited the comment is
41 * reset. As this inherits from EditableView if the JTextComponent is
42 * not editable, the textarea will not be visible.
43 *
44 * @author Scott Violet
45 */
46 class CommentView extends HiddenTagView {
47 CommentView(Element e) {
48 super(e);
49 }
50
51 protected Component createComponent() {
52 Container host = getContainer();
53 if (host != null && !((JTextComponent)host).isEditable()) {
54 return null;
55 }
56 JTextArea ta = new JTextArea(getRepresentedText());
57 Document doc = getDocument();
58 Font font;
59 if (doc instanceof StyledDocument) {
60 font = ((StyledDocument)doc).getFont(getAttributes());
61 ta.setFont(font);
62 }
63 else {
64 font = ta.getFont();
65 }
66 updateYAlign(font);
67 ta.setBorder(CBorder);
68 ta.getDocument().addDocumentListener(this);
69 ta.setFocusable(isVisible());
70 return ta;
71 }
72
73 void resetBorder() {
74 }
75
76 /**
77 * This is subclassed to put the text on the Comment attribute of
78 * the Element's AttributeSet.
79 */
80 void _updateModelFromText() {
81 JTextComponent textC = getTextComponent();
82 Document doc = getDocument();
83 if (textC != null && doc != null) {
84 String text = textC.getText();
85 SimpleAttributeSet sas = new SimpleAttributeSet();
86 isSettingAttributes = true;
87 try {
88 sas.addAttribute(HTML.Attribute.COMMENT, text);
89 ((StyledDocument)doc).setCharacterAttributes
90 (getStartOffset(), getEndOffset() -
91 getStartOffset(), sas, false);
92 }
93 finally {
94 isSettingAttributes = false;
95 }
96 }
97 }
98
99 JTextComponent getTextComponent() {
100 return (JTextComponent)getComponent();
101 }
102
103 String getRepresentedText() {
104 AttributeSet as = getElement().getAttributes();
105 if (as != null) {
106 Object comment = as.getAttribute(HTML.Attribute.COMMENT);
107 if (comment instanceof String) {
108 return (String)comment;
109 }
110 }
111 return "";
112 }
113
114 static final Border CBorder = new CommentBorder();
115 static final int commentPadding = 3;
116 static final int commentPaddingD = commentPadding * 3;
117
118 @SuppressWarnings("serial") // Superclass is not serializable across versions
119 static class CommentBorder extends LineBorder {
120 CommentBorder() {
121 super(Color.black, 1);
122 }
123
124 public void paintBorder(Component c, Graphics g, int x, int y,
125 int width, int height) {
126 super.paintBorder(c, g, x + commentPadding, y,
127 width - commentPaddingD, height);
128 }
129
130 public Insets getBorderInsets(Component c, Insets insets) {
131 Insets retI = super.getBorderInsets(c, insets);
132
133 retI.left += commentPadding;
134 retI.right += commentPadding;
135 return retI;
136 }
137
138 public boolean isBorderOpaque() {
139 return false;
140 }
141 } // End of class CommentView.CommentBorder
142 } // End of CommentView