Name: skT45625 Date: 04/19/2000


java version "1.3.0rc3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc3-Z)
Java HotSpot(TM) Client VM (build 1.3.0rc3-z, mixed mode)


I'm trying to build a simple HTML editor. It's a JEditorPane, using an
HTMLEditorKit, and an HTMLDocument. I then have bold, underline, and italic
buttons, which are pressed to affect the selected text by using a
MutableAttributeSet and setCharacterAttributes. This works fine, until the text
is stored, and read back into the document at a later date. Say, for instance,
I make the first character of my text bold, and then save it away somewhere.
Looking at the HTML document, I can see that the b tags have been applied
properly. When the document is read back in, the b tag is detected, and the
first character is displayed as bold (as expected). Highlighting that
character, and turning bold off causes it to go back to normal in the
JeditorPane display, but the tag is left in the underlying document.
I can't paste the whole code here (as it's very much a work in progress), but
here's some sample code to illustrate the problem:

import javax.swing.*;
import java.awt.*;
import javax.swing.text.html.HTMLEditorKit;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.*;
import javax.swing.text.*;
import java.io.Reader;





public class HTMLtest extends JFrame
{
    JEditorPane jEditorPane1 = new JEditorPane();
    BorderLayout borderLayout1 = new BorderLayout();
    HTMLEditorKit kit = new HTMLEditorKit();
    HTMLDocument doc = (HTMLDocument)(kit.createDefaultDocument());


    public HTMLtest()
    {
        try
        {
            jbInit();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
    }

    private void jbInit() throws Exception
    {

        this.getContentPane().setLayout(borderLayout1);
        this.getContentPane().add(jEditorPane1, BorderLayout.CENTER);
        Reader in = new java.io.StringReader("12345");
        kit.read(in, doc, 0);
        in.close();
        jEditorPane1.setContentType("text/html");
        jEditorPane1.setEditorKit(kit);
        jEditorPane1.setDocument(doc);
    }


    public static void main(String args[])
    {
        HTMLtest htmltest = new HTMLtest();
        //print out the text before we modify it
        System.out.println(htmltest.jEditorPane1.getText());

        MutableAttributeSet attr = new SimpleAttributeSet();
        StyleConstants.setBold(attr, true);
        StyleConstants.setItalic(attr, true);
        htmltest.doc.setCharacterAttributes(1, 1,attr,false);

        //print out the text after we've made it bold and italic
        System.out.println(htmltest.jEditorPane1.getText());

        StyleConstants.setBold(attr, false);
        StyleConstants.setItalic(attr, false);
        htmltest.doc.setCharacterAttributes(1, 1,attr,false);

        //print out the text when we've removed bold and italic
        System.out.println(htmltest.jEditorPane1.getText());

        System.exit(0);
    }
}


Run as is, the output is exactly as expected. The "1" gets given bold and
italic tags, and then has them removed. Now change the line that reads:
        Reader in = new java.io.StringReader("12345");
to read
        Reader in = new java.io.StringReader("<b>1</b>2345");
and run it again, and you'll see in the system out that the bold tag remains.
(Review ID: 103900)
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