Method setVisible

src/main/java/gate/swing/XJPopupMenu.java:45–62

Force separators to be the same width as the JPopupMenu. This is because the MenuLayout make separators invisible contrary to the default JPopupMenu layout manager. @param aFlag true if the popupmenu is visible

(boolean aFlag)

   * @param aFlag true if the popupmenu is visible
   */
  @Override
  public void setVisible(boolean aFlag) {
    super.setVisible(aFlag);
    if (!aFlag) { return; }
    MenuLayout layout = (MenuLayout) getLayout();
    for (int i = 0; i < getComponents().length; i++) {
      Component component = getComponents()[i];
      if (component instanceof JSeparator) {
        JSeparator separator = (JSeparator) component;
        int column = layout.getColumnForComponentIndex(i);
        int preferredWidth = layout.getPreferredWidthForColumn(column);
        // use the popupmenu width to set the separators width
        separator.setPreferredSize(new Dimension(
          preferredWidth, separator.getHeight()));
      }
    }
    revalidate();
  }
}