Bug 408101

Description Rüdiger Herrmann 2013-05-15 05:52:56 EDT

When a DropDown widget is disposed (through its assiociated widget), the following Javascript error occurs:
  Could not process server response:

  Error: Error: Operation "destroy" on target "r6" of type "DropDown" failed:
  Cannot call method 'removeEventListener' of null

To reproduce, run this code and click the 'Dispose text widget' button
  final Text text = new Text(parent, SWT.BORDER);
  new DropDown(text);
  Button button = new Button( parent, SWT.PUSH);
  button.setText("Dispose text widget");
  button.addListener(SWT.Selection, new Listener() {
    public void handleEvent(Event event) {
      text.dispose();
    }
  } );