Question

This is a question on how to detect which button was clicked in the MessageBox/Dialog.
GXT 2.1 or 2.2 only. Please do not answer using GXT 3.

Ideally, this is how I could do a confirm dialog.

final MessageBox box = MessageBox.confirm(
  "Confirm kill avatar",
  "Please remove " + getAvatar().getName(),
  new Listener<MessageBoxEvent>()
  {
    @Override
    public void handleEvent(MessageBoxEvent be)
    {
      Button clicked = be.getButtonClicked();
      if (clicked == box.getDialog().getButtonById("yes"))
        deleteAvatar();
      else
       Info.display("Action cancelled");
    }
  });

• However. since box has not been defined, box.getDialog() would be NPE,
• and compiler preempts that by croaking “box not initialised”,
• and cannot initialise because box has to be final,
• box has to be final because it is used in the anon Listener class.

Instead, I have to compare buttons using the button text. Which is not i18n friendly. Very bad practice.

    @Override
    public void handleEvent(MessageBoxEvent be)
    {
      Button clicked = be.getButtonClicked();
      if (clicked.getText().equals("Yes")))
        deleteAvatar();
      else
       Info.display("Action cancelled");
    }

In GXT 2.2, is this the recommended way? Or is there a better way to detect button being pressed, i18n-friendly?

I SHOULD compare buttons NOT the text of the buttons.

Answer 1

You can use:

if (Dialog.CANCEL.equals(be.getButtonClicked().getItemId())) {

    //do action 

}