Пример #1
0
        /// <summary>
        /// Creates a substring of this rich text.
        /// </summary>
        public RichText Substring(int offset, int length)
        {
            if (offset == 0 && length == this.Length)
            {
                return(this);
            }
            string          newText = text.Substring(offset, length);
            RichTextModel   model   = ToRichTextModel();
            OffsetChangeMap map     = new OffsetChangeMap(2);

            map.Add(new OffsetChangeMapEntry(offset + length, text.Length - offset - length, 0));
            map.Add(new OffsetChangeMapEntry(0, offset, 0));
            model.UpdateOffsets(map);
            return(new RichText(newText, model));
        }