JEditorPane link alink vlink colors

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John - 01 Sep 2006 10:08 GMT

Hello,

Is it possible to make JEditorPane use the correct color for hyperlinks?
I have already read that it's not up to JEditorPane to handle "vlink"
color, it must be done by the user. But for "alink", and at least "link"
color, what must be done to make it work?

Here is an example:

import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JEditorPane;

public class TestLinkColor extends JFrame {

 private JPanel jContentPane = null;
 private JScrollPane jScrollPane = null;
 private JEditorPane jEditorPane = null;

 public static void main(String[] args) {
 SwingUtilities.invokeLater(new Runnable() {
 public void run() {
 TestLinkColor thisClass = new
TestLinkColor();
 thisClass.
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 thisClass.setVisible(true);
 }
 });
 }

 public TestLinkColor() {
 super();
 initialize();

 StringBuffer html = new StringBuffer();

 html.append("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n");
 html.append("<html><head>\n");
 html.append(" <title>Title</title>\n");
 html.append("</head>\n");
 html.append("<body alink=\"#FF0000\" bgcolor=\"#FFFFFF\"
link=\"#00FF00\" text=\"#000000\" vlink=\"#0000FF\">\n");
 html.append("A link: <a href=\"http://bugs.sun.com\">Found a BUG</a>\n");
 html.append("</body></html>\n");

 System.err.println(html.toString());

 getJEditorPane().setContentType("text/html");
 getJEditorPane().setText(html.toString());
 }

 private void initialize() {
 this.setSize(300, 200);
 this.setContentPane(getJContentPane());
 this.setTitle("JFrame");
 }

 private JPanel getJContentPane() {
 if (jContentPane == null) {
 jContentPane = new JPanel();
 jContentPane.setLayout(new BorderLayout());
 jContentPane.add(getJScrollPane(), BorderLayout.CENTER);
 }
 return jContentPane;
 }

private JScrollPane getJScrollPane() {
 if (jScrollPane == null) {
 jScrollPane = new JScrollPane();
 jScrollPane.setViewportView(getJEditorPane());
 }
 return jScrollPane;
}

private JEditorPane getJEditorPane() {
 if (jEditorPane == null) {
 jEditorPane = new JEditorPane();
 }
 return jEditorPane;
}

}

Thanks

Reply to this Message

hiwa - 02 Sep 2006 11:02 GMT

John のメッセージ:

> Hello,
>
[quoted text clipped - 84 lines]
>
> Thanks

If they are not defined in HTML 3.1 or before, JEditorPane can't handle
them.

Reply to this Message

Andrew Thompson - 02 Sep 2006 11:10 GMT

> John のメッセージ:

...

> > html.append("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n");

...

> If they are not defined in HTML 3.1

Did you mean HTML 3.2? I have never actually seen a page
that claimed to conform to HTML 3.1.

>...or before, JEditorPane can't handle them.

Andrew T.

Reply to this Message

John - 04 Sep 2006 12:45 GMT

> If they are not defined in HTML 3.1 or before, JEditorPane can't handle
> them.

seems to be HTML 3.2:

http://tinyurl.com/kgekl
or
http://72.14.221.104/search?q=cache:L_RhtLFYW-cJ:java.sun.com/j2se/1.4.2/docs/ap
i/javax/swing/JEditorPane.html+JEditorPane+HTML+3.2+site:java.sun.com&hl=fr&gl=f
r&ct=clnk&cd=1

Reply to this Message

Andrew Thompson - 04 Sep 2006 13:02 GMT

> > If they are not defined in HTML 3.1 or before, JEditorPane can't handle
> > them.
>
> seems to be HTML 3.2:

> http://72.14.221.104/search?q=cache:L_RhtLFYW-cJ:java.sun.com/j2se/1.4.2/docs/ap
i/javax/swing/JEditorPane.html+JEditorPane+HTML+3.2+site:java.sun.com&hl=fr&gl=f
r&ct=clnk&cd=1

Yep. When I read your post, I went searching Sun for a page that
describes *exactly* what is understood by JEP, but after 2 minutes
failure (for the Sun search engine to produce a result page), gave up.

I am sure I recall that JEP does *not* implement *every* style
understood in HTML 3.2, but I suspect the actual problem here
is that the local class has no 'memory' of (especially) VLINK's
with which to 'remember' what links have been visited.

VLINK/ALINK were sure defined for HTML 3.2
<http://www.w3.org/TR/REC-html32#body>

..but as an aside, did you validate your HTML? It looked OK to
me, but I am no HTML parser - I suggest it is better when
experimenting (and especially when facing unexpected results)
to keep the HTML as a separate document - specifically so that
it can be validated. The on-line validator is here..
<http://validator.w3.org/>

Andrew T.

Reply to this Message

John - 04 Sep 2006 13:46 GMT

vlink is the less important. The most important is "link".

the file: =======================================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Title</title>
</head>
<body alink="#FF0000" bgcolor="#FFFFFF" link="#00FF00" text="#000000"
vlink="#0000FF">
A link: <a href="http://bugs.sun.com">link text</a>
</body></html>
=================================================
Result: Passed validation
File: upload://Form Submission
Encoding: utf-8
Doctype: -//W3C//DTD HTML 3.2//EN

Unknown Parse Mode!

The MIME Media Type () for this document is used to serve both SGML
and XML based documents, and it is not possible to disambiguate it based
on the DOCTYPE Declaration in your document. Parsing will continue in
SGML mode.

This Page Is Valid -//W3C//DTD HTML 3.2//EN!

Tip Of The Day:
Use class with semantics in mind

The uploaded document "upload://Form Submission" was checked and found
to be valid -//W3C//DTD HTML 3.2//EN. This means that the resource in
question identified itself as "-//W3C//DTD HTML 3.2//EN" and that we
successfully performed a formal validation using an SGML or XML Parser
(depending on the markup language used).

Reply to this Message

Andrew Thompson - 04 Sep 2006 14:21 GMT

> vlink is the less important. The most important is "link".
>
> the file: =======================================
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">

...

> Result: Passed validation

That 's the 'good stuff'. Thanks for confirming.

Not sure how to proceed from here, am interested to
hear from others.

Andrew T.

Reply to this Message

John - 06 Sep 2006 14:22 GMT

i've found 2 simple workaround: put a style for each A tag or enclose
each A tag with a FONT tag.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Title</title>
</head>
<body alink="#FF0000" bgcolor="#FFFFFF">
A no-color link: <a href="http://bugs.sun.com">link text</a> 
A red style link: <a style="color: red;" href="http://bugs.sun.com">link
text</a> 
A red font link: <a href="http://bugs.sun.com">link
text</a> 
</body></html>

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JEditorPane link alink vlink colors

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