/**
   * Action method invoked when an event triggers this action.
   *
   * <p>The {@link #_compartment} instance variable defines the action to take, and the {@link
   * #_display} instance variable whether it should set visibility or note.
   *
   * <p><em>Note</em>. The {@link #_display} instance variable is really redundant. Its value is
   * implied by the operation.
   *
   * @param ae The event that triggered us.
   */
  public void actionPerformed(ActionEvent ae) {

    // Only do anything if we have a single item selected (surely this
    // should work for multiple selections as well?).

    Vector sels = Globals.curEditor().getSelectionManager().selections();

    if (sels.size() == 1) {
      Selection sel = (Selection) sels.firstElement();
      Fig f = sel.getContent();

      // Perform the action

      if (_compartment.equals("Show Attribute Compartment")) {
        ((FigClass) f).setAttributeVisible(_display);
      } else if (_compartment.equals("Hide Attribute Compartment")) {
        ((FigClass) f).setAttributeVisible(_display);
      } else if (_compartment.equals("Show Operation Compartment")
          || _compartment.equals("Hide Operation Compartment")) {
        if (f instanceof FigClass) ((FigClass) f).setOperationVisible(_display);
        if (f instanceof FigInterface) ((FigInterface) f).setOperationVisible(_display);
      } else if (_compartment.equals("Show Extension Point Compartment")) {
        ((FigUseCase) f).setExtensionPointVisible(_display);
      } else if (_compartment.equals("Hide Extension Point Compartment")) {
        ((FigUseCase) f).setExtensionPointVisible(_display);
      } else if (_compartment.equals("Show All Compartments")) {
        ((FigClass) f).setAttributeVisible(_display);
        ((FigClass) f).setOperationVisible(_display);
      } else {
        ((FigClass) f).setAttributeVisible(_display);
        ((FigClass) f).setOperationVisible(_display);
      }
    }
  }
 public void mousePressed(MouseEvent me) {
   super.mousePressed(me);
   Editor ce = Globals.curEditor();
   Selection sel = ce.getSelectionManager().findSelectionFor(this);
   if (sel instanceof SelectionComponentInstance) ((SelectionComponentInstance) sel).hideButtons();
 }