public VisualItem VisualItemFactory(ScreenContent ScreenContent, ContentField contentField)
        {
            VisualItem visualItem = null;

            if (contentField is ContinuedContentField)
            {
                var contField = contentField as ContinuedContentField;
                if (contField.ContinuedFieldSegmentCode == ContinuedFieldSegmentCode.First)
                {
                    visualItem =
                        new VisualSpanner(ScreenContent, contField, this.CanvasDefn);
                }
            }
            else
            {
                visualItem = this.VisualItemFactory(
                    contentField.GetShowText(ScreenContent),
                    contentField.RowCol,
                    contentField.GetAttrByte(ScreenContent),
                    contentField.GetTailAttrByte(ScreenContent));
            }

            return(visualItem);
        }