textarea charcounter

Question

How do I make a label to show the charcount of a TextArea? I have the following code:

public void onChange(Field field, Object newVal, Object oldVal){
    counterLabel.setText(textArea.getValueAsString().length() + "/160");
}

problem is I have to click the label for i to change the charcount.
help please

Answer 1

textArea.addKeyPressListener(new EventCallback(){
        @Override
        public void execute(EventObject e) {
            // TODO Auto-generated method stub

        }
});

Use this EventCallback and in the execute method just use your method counterLabel.setText(textArea.getValueAsString().length() + "/160");

Answer 2

Change the charcount when the users presses a key instead of when the textarea changes.

Maybe addKeyboardListener can help.