def setModel(self, model: QAbstractItemModel):
super().setModel(model)
for row in range(model.rowCount()):
for col in range(model.columnCount()):
span = model.span(model.index(row, col))
if span.height() > 1 or span.width() > 1:
self.setSpan(row, col, span.height(), span.width())
