/// <summary>
        /// Initialize a new instance of the MenuLinkLabelController class.
        /// </summary>
        /// <param name="viewManager">Owning view manager instance.</param>
        /// <param name="target">Target for state changes.</param>
        /// <param name="linkLabel">Drawing element that owns link label display.</param>
        /// <param name="needPaint">Delegate for notifying paint requests.</param>
        public MenuLinkLabelController(ViewContextMenuManager viewManager,
                                       ViewDrawContent target,
                                       ViewDrawMenuLinkLabel linkLabel,
                                       NeedPaintHandler needPaint)
        {
            Debug.Assert(viewManager != null);
            Debug.Assert(target != null);
            Debug.Assert(linkLabel != null);
            Debug.Assert(needPaint != null);

            ViewManager    = viewManager;
            _target        = target;
            _menuLinkLabel = linkLabel;
            NeedPaint      = needPaint;
        }
        /// <summary>
        /// Initialize a new instance of the MenuLinkLabelController class.
        /// </summary>
        /// <param name="viewManager">Owning view manager instance.</param>
        /// <param name="target">Target for state changes.</param>
        /// <param name="linkLabel">Drawing element that owns link label display.</param>
        /// <param name="needPaint">Delegate for notifying paint requests.</param>
        public MenuLinkLabelController(ViewContextMenuManager viewManager,
                                       ViewDrawContent target,
                                       ViewDrawMenuLinkLabel linkLabel,
                                       NeedPaintHandler needPaint)
        {
            Debug.Assert(viewManager != null);
            Debug.Assert(target != null);
            Debug.Assert(linkLabel != null);
            Debug.Assert(needPaint != null);

            _viewManager = viewManager;
            _target = target;
            _menuLinkLabel = linkLabel;
            NeedPaint = needPaint;
        }