1 /*
2  * Copyright (c) 2006, 2012, 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
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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.
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 package sun.tools.jconsole;
27 
28 import javax.swing.*;
29 import javax.swing.event.*;
30 import javax.swing.text.*;
31 
32 @SuppressWarnings("serial")
33 public class HTMLPane extends JEditorPane {
34     private boolean hasSelection = false;
35 
HTMLPane()36     public HTMLPane() {
37         setContentType("text/html");
38         setEditable(false);
39         ((DefaultCaret)getCaret()).setUpdatePolicy(DefaultCaret.NEVER_UPDATE);
40         addCaretListener(new CaretListener() {
41             // Listen for selection changes
42             public void caretUpdate(CaretEvent e) {
43                 setHasSelection(e.getDot() != e.getMark());
44             }
45         });
46     }
47 
setHasSelection(boolean b)48     public synchronized void setHasSelection(boolean b) {
49         hasSelection = b;
50     }
51 
getHasSelection()52     public synchronized boolean getHasSelection() {
53         return hasSelection;
54     }
55 
setText(String text)56     public void setText(String text) {
57         // Apply update only if a selection is not active
58         if (!getHasSelection()) {
59             // JEditorPane does not automatically pick up fg color
60             String textColor =
61                 String.format("%06x", getForeground().getRGB() & 0xFFFFFF);
62             super.setText("<html><body text=#"+textColor+">" + text + "</body></html>");
63         }
64     }
65 }
66