!7

module CurrentAction {
  transient JPanel stack;
  
  start {
    if (dm_getBounds() == null) {
      int w = getWidth(dm_desktopPane()), h = getHeight(dm_desktopPane());
      dm_setBounds(this, w-300, 300, h-200, h);
    }
  }
  
  visualize {
    ret stack = dynamicVStack2();
  }
  
  // API
  
  interface AnAction extends AutoCloseable {
    void setText(S text);
  }
  
  // Note: cancelMe will be called in GUI thread
  AutoCloseable showAction(S action, Runnable cancelMe) {
    final JLabel lbl = jlabel(action);
    final JComponent c = centerAndEast(lbl, jbutton("Cancel", cancelMe));
    addAndValidate(stack, c);
    ret new AnAction {
      public void close { removeAndValidate(c); }
      public void setText(S text) { main.setText(lbl, text); }
    };
  }
}