Prompt Text With JTextPane

Question

I am using JtextPane as a JTextField to make use of Html for styling..but I cant implement prompt text functionality..here is my code...

    JTextPane txtNm = new JTextPane();
    txtNm.setContentType("text/html");
    txtNm.addFocusListener(new FocusAdapter() {
        @Override
        public void focusGained(FocusEvent arg0) {
            if(txtNm.getText().equals("<html><font face='Tw Cen MT' size='4' color='GRAY'>&nbsp;NAME</font><font color='red'>&nbsp;*</font></html>")){
                txtNm.setText("");
                //System.out.println("in txtnmfocus");
                txtNm.setForeground(Color.decode("#003366"));
            }
        }
        @Override
        public void focusLost(FocusEvent e) {
            if(txtNm.getText().isEmpty()){
                txtNm.setText("<html><font face='Tw Cen MT' size='4' color='GRAY'>&nbsp;NAME</font><font color='red'>&nbsp;*</font></html>");
            }
        }
    });

Same here. What are you trying to do and what is going wrong ? — Sharcoux, Sep 30 '15 at 13:15
I am trying to do something like that,when the textfld gets focus then it will be empty and when it lost focus then it will set the previous text.... — Sayantan Chandra, Sep 30 '15 at 13:29
In the above code in both focus gained and focus lost function the control does not enters the if condition..this is the problem.. — Sayantan Chandra, Sep 30 '15 at 13:31
Just print the real value of txtNm.getText() and you will understand the problem... — Sharcoux, Sep 30 '15 at 20:12

score 0 · Answer 1 · answered Oct 01 '15 at 07:23

txtNm.getText().isEmpty()

Is never empty. For HTMLEditorKit it returns at least <html><body></body></html> so is never empty.

Check what is really returned in both cases. You can try to analyse txtNm.getDocument().getLength() checking whether it's empty or not

score 0 · Answer 2 · answered Oct 01 '15 at 22:13

Text returned by getText() should be treated with an HTML parser like Jsoup. This is because...

"<html><body></body></html>"

...and...

"<html>
    <body>
    </body>
</html>"

...for instance, correspond both to what you would call an "empty string". Though, the string aren't equal to each-other.

Prompt Text With JTextPane

2 Answers2