Alexandria.Engines.DarkSouls.Effect.Browse C# (CSharp) Метод

        public override System.Windows.Forms.Control Browse(Action<double> progressUpdateCallback = null)
        {
            var box = new BetterRichTextBox() {
                Multiline = true,
                ReadOnly = true,
                WordWrap = true,
            };

            bool recurse = false;

            box.SelectionChanged += (object sender, EventArgs args) => {
                if (recurse)
                    return;

                try {
                    Point scrollPosition = box.ScrollPosition;
                    int resetStart = box.SelectionStart, resetLength = box.SelectionLength;
                    box.BeginUpdate();

                    recurse = true;
                    var start = box.SelectionStart;
                    string text = box.Text;

                    if (!IsIdentifier(text, start) && !IsIdentifier(text, start - 1))
                        return;
                    while (IsIdentifier(text, start - 1))
                        start--;

                    int end = box.SelectionStart;
                    while (IsIdentifier(text, end))
                        end++;

                    string searchText = text.Substring(start, end - start);

                    box.SelectAll();
                    //box.SelectionFont = normal;
                    box.SelectionBackColor = Color.Transparent;

                    start = 0;
                    while (true) {
                        start = text.IndexOf(searchText, start);
                        if (start < 0)
                            break;

                        if (!IsIdentifier(text, start - 1) && !IsIdentifier(text, start + searchText.Length)) {
                            box.Select(start, searchText.Length);
                            //box.SelectionFont = underlined;
                            box.SelectionBackColor = Color.Yellow;
                        }

                        start += searchText.Length;
                    }

                    box.Select(resetStart, resetLength);
                    box.ScrollPosition = scrollPosition;
                } finally {
                    box.EndUpdate();
                    box.Invalidate();
                    recurse = false;
                }
            };

            RichTextBuilder builder = new RichTextBuilder();

            foreach (EffectInstruction instruction in Instructions) {
                instruction.ToRichText(builder);
                builder.Append("\n");
            }

            box.Rtf = builder.ToString();
            return box;
        }