public override void Redo(Gtk.TextBuffer buffer)
{
RemoveSplitTags(buffer);
Gtk.TextIter idx_iter = buffer.GetIterAtOffset(index);
buffer.InsertRange(ref idx_iter, chop.Start, chop.End);
buffer.MoveMark(buffer.SelectionBound, buffer.GetIterAtOffset(index));
buffer.MoveMark(buffer.InsertMark,
buffer.GetIterAtOffset(index + chop.Length));
}
public override void Undo(Gtk.TextBuffer buffer)
{
int tag_images = GetSplitOffset();
Gtk.TextIter start_iter = buffer.GetIterAtOffset(start - tag_images);
buffer.InsertRange(ref start_iter, chop.Start, chop.End);
buffer.MoveMark(buffer.InsertMark,
buffer.GetIterAtOffset(is_forward ? start - tag_images
: end - tag_images));
buffer.MoveMark(buffer.SelectionBound,
buffer.GetIterAtOffset(is_forward ? end - tag_images
: start - tag_images));
ApplySplitTags(buffer);
}