HTML Editor

From:

"=?ISO-8859-1?Q?Martin_G=E" <=?iso-8859-1?q?martin_g=e@THRWHITE.remove-dii-this>

Newsgroups:

comp.lang.java.gui

Date:

Wed, 27 Apr 2011 15:25:55 GMT

Message-ID:

<ek2rfh$4s0$1@online.de>

  To: comp.lang.java.gui
Hello,

i'm currently trying to develop a simple HTML-Editor with JTextPane and
the HTMLEditorKit provided by Swing.

Actually I want to transform a paragraph <p> to a Heading <h1>. This is
my code:

HTMLDocument htmlDoc = (HTMLDocument) textEditor.getDocument();
int position = textEditor.getSelectionStart();
Element elem = htmlDoc.getParagraphElement(position);

if( elem instanceof HTMLDocument.BlockElement )
{
     HTMLDocument.BlockElement block = (HTMLDocument.BlockElement)elem;
     int start, end;
     String text;

     try
     {
    start = block.getStartOffset();
    end = block.getEndOffset();
    text = htmlDoc.getText( start, end-start );
    htmlDoc.setOuterHTML(
        block,
        "<h1>" +
        text +
        "</h1>"
    );
     }
     catch( Exception e )
     {
     };
}

This works fine, unless the block does not contain any formating
information. Thus

     <p>Hello <u>world</u>.</p>

becomes to

     <h1>Hello world.</h1>

Is there a better way to change the type of a block element?

Thanks in advance

Martin

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