private void DrawLine(VisualTextLine line) {
if (line.Index < visuals.Count) {
visuals.Insert(line.Index, line);
visuals.RemoveAt(line.Index + 1);
line.Draw();
} else {
visuals.Add(line);
line.Draw();
}
}
private void RedrawCollapsedLine(VisualTextLine collapsedLine, int line) {
if (line >= visuals.Count) {
visuals.Add(null);
} else {
visuals[line] = null;
}
visuals[line] = collapsedLine;
collapsedLine.Draw();
}