Modify StyledEditorKit's text without losing text formatting

Question

How do i modify text in a StyledEditorKit (RTFEditorKit in my case) without losing the text's format/style?
This is my code right now. Whenever i modify the text, the modified part reverts back to the default font, size and style.
          toUpper = new myAction("To Upper Case", new ImageIcon(), "", new Integer(KeyEvent.VK_U))
               public void actionPerformed(ActionEvent ae)
                    try
                         String s = FileIO.fio.ep.getSelectedText().toUpperCase();
                         int start = FileIO.fio.ep.getSelectionStart();
                         int end = FileIO.fio.ep.getSelectionEnd();
                         FileIO.fio.ep.getDocument().insertString(end, s, null);
                         FileIO.fio.ep.getDocument().remove(start, end-start);
                    catch (CannotUndoException e) {}
                    catch (Exception e) { /*e.printStackTrace();*/ }
          };FileIO.fio.ep is a JEditorsPane with the RTFEditorKit installed
FileIO.fio.rtfek is the RTFEditorKit
Edited by: h_howee on Apr 29, 2008 4:36 PM

Answer 1

You pass null here.
FileIO.fio.ep.getDocument().insertString(end, s, null);
That's why the attributes are reset.
You mut get proper attributes and pass them in the method.
Cast the FileIO.fio.ep.getDocument() to StyledDocument, get Character element from the document using caret postition and get the attributes from the element.
Regards,
Stas