def set_header_list(self, header_list):
    self.source_model.set_header_list(header_list)
    self.sort_filter_model.set_header_list(header_list)
    self.sort_filter_model.setSourceModel(self.source_model)
    self.item_view.set_header_list(header_list)
def set_header_list(self, header_list):
    self.source_model.set_header_list(header_list)
    self.sort_filter_model.set_header_list(header_list)
    self.sort_filter_model.setSourceModel(self.source_model)
    self.item_view.set_header_list(header_list)