public bool ClearText(bool run = true)
{
bool success = false;
foreach (var shape in _selectedShapes)
{
var act = shape.GetClearTextAction();
if (act != null)
{
success = true;
if (run)
_doc.UndoStack.Do(act, false);
}
}
_doc.UndoStack.FinishGroup();
return success;
}