Insert HTML.Tag attributes?

Question

Hey,
How would I insert html attributes? I am making a HTML Editor.
The following are some valid java html attributes. How would I insert it properly?
HTML.Tag.P, HTML.Tag.BLOCKQUOTE, HTML.Tag.CENTER,
HTML.Tag.CITE, HTML.Tag.CODE, HTML.Tag.H1, HTML.Tag.H2,
HTML.Tag.H3, HTML.Tag.H4, HTML.Tag.H5, HTML.Tag.H6,
HTML.Tag.PRE
Like for example, to make text bold, you would do
MutableAttributeSet attr = new SimpleAttributeSet();
StyleConstants.setBold(attr, true);
textpane.setCharacterAttributes(attr,false);
Is there similar code like the one above to add HTML.Tags like the ones I listed above in my post?
Thanks in advance

Answer 1

Hi,
sorry about the delay, couldn't find this thread last night.
Useful docs:
http://java.sun.com/products/jfc/tsc/articles/text/element_interface/index.html
and
http://java.sun.com/products/jfc/tsc/articles/text/attributes/
Those methods are in javax.swing.text.html.HTMLDocument and take the form insertBeforeStart(Element, String). As I said yesterday, as soon as you have text then the caret is in a character Element and a Paragraph element. So for e.g. if you're in a P element and you want to create an H1 element, how do you do it? If the user clicks your H1 button then you create an empty heading, easy enough. But if they have some text selected then you have a choice. You could just create an empty H1 or you could assume that they have typed the H1 content and have highlighted it so that it becomes an H1. You then have to change the existing element so that is no longer has the (now H1) text in it.
That's where the other two methods (setInnerHTML and setOuterHTML) come into play.
The other problemette that I'm working on is reseting text back to normal after it has been formatted.
Suppose you have a P paragraph. The user highlights a single word, clicks Bold. That's easy. Then they decide that they don't want it bold, so they click the Normal button. Taking bold off is easy, but should you. What if the paragraph element was actually an H1 element. If you turn bold off now then that word no longer matches the H1 style.
You could check at the caret position just before the start of the element that the user has selected and see what the style is there. BUt then waht if the user has the word before perhaps underlined. Again it's unreliable.
Also I'm finding then when I remove the bold formatting that the element isn't being reabsorbed into it's parent. In a paragraph if I go through and make each word formatted (B, i, u) and then switch the formatting off word at a time I end up with each word as an element.
Still working on these, so I'll post a solution when I have one.
regards
sjl