/// <summary>
        /// Prints a cell created with this frame.
        /// </summary>
        /// <param name="printContext">The context used to print the cell.</param>
        /// <param name="cellView">The cell to print.</param>
        /// <param name="origin">The location where to start printing.</param>
        /// <param name="size">The printing size, padding included.</param>
        /// <param name="padding">The padding to use when printing.</param>
        public virtual void Print(ILayoutPrintContext printContext, ILayoutCellView cellView, Point origin, Size size, Padding padding)
        {
            ILayoutDiscreteContentFocusableCellView DiscreteContentFocusableCellView = cellView as ILayoutDiscreteContentFocusableCellView;

            Debug.Assert(DiscreteContentFocusableCellView != null);

            ILayoutKeywordFrame KeywordFrame = DiscreteContentFocusableCellView.KeywordFrame;

            Debug.Assert(KeywordFrame != null);

            KeywordFrame.Print(printContext, DiscreteContentFocusableCellView, origin, size, padding);
        }
        /// <summary>
        /// Measures a cell created with this frame.
        /// </summary>
        /// <param name="measureContext">The context used to measure the cell.</param>
        /// <param name="cellView">The cell to measure.</param>
        /// <param name="collectionWithSeparator">A collection that can draw separators around the cell.</param>
        /// <param name="referenceContainer">The cell view in <paramref name="collectionWithSeparator"/> that contains this cell.</param>
        /// <param name="separatorLength">The length of the separator in <paramref name="collectionWithSeparator"/>.</param>
        /// <param name="size">The cell size upon return, padding included.</param>
        /// <param name="padding">The cell padding.</param>
        public virtual void Measure(ILayoutMeasureContext measureContext, ILayoutCellView cellView, ILayoutCellViewCollection collectionWithSeparator, ILayoutCellView referenceContainer, Measure separatorLength, out Size size, out Padding padding)
        {
            ILayoutDiscreteContentFocusableCellView DiscreteContentFocusableCellView = cellView as ILayoutDiscreteContentFocusableCellView;

            Debug.Assert(DiscreteContentFocusableCellView != null);

            ILayoutKeywordFrame KeywordFrame = DiscreteContentFocusableCellView.KeywordFrame;

            Debug.Assert(KeywordFrame != null);

            KeywordFrame.Measure(measureContext, DiscreteContentFocusableCellView, collectionWithSeparator, referenceContainer, separatorLength, out size, out padding);

            Debug.Assert(padding.IsEmpty);
            measureContext.UpdatePadding(LeftMargin, RightMargin, ref size, out padding);

            Debug.Assert(RegionHelper.IsValid(size));
        }
 /// <summary>
 /// Initializes a new instance of the <see cref="LayoutDiscreteContentFocus"/> class.
 /// </summary>
 public LayoutDiscreteContentFocus(ILayoutDiscreteContentFocusableCellView cellView)
     : base(cellView)
 {
 }