Description Pieter Agten 2007-09-11 14:54:05 EDT

I would be nice if it would be possible to add a VerifyListener to the DateTime control in SWT.

I tried to invalidate the user's selection of a date when it was after the date of another DateTime widget and then leave the widget back with the date it originally had.

I tried to do this using a SelectionListener and the 'e.doit' property, but that doesn't seem to work.

This code illustrates what I was trying to do:

dateTimeStart.addSelectionListener(new SelectionListener() {

  @Override
  public void widgetDefaultSelected(SelectionEvent e) {
  }

  @Override
  public void widgetSelected(SelectionEvent e) {
    if (dateIsBeforeOtherDate())
       //The date is NOT valid. The user's input should be invalidated.
       e.doit = false;
    else
       /The date is valid. The user's input should be copied to the corresponding property in the data model.
       setNewDateInModel();
    }
 });

This code doesn't work. Eventhough e.doit is set to false, the input of the DateTime widget still changes.

The solution would be to add a VerifyListener to the DateTime control, but this is currently not possible.