Method ShowCargo

src/station_gui.cpp:1368–1402

* Show a certain cargo entry characterized by source/next/dest station, cargo type and amount of cargo at the * right place in the cargo view. I.e. update as many rows as are expanded following that characterization. * @param data Root entry of the tree. * @param cargo Cargo type of the entry to be shown. * @param source Source station of the entry to be shown. * @param next Next station

	 * @param count Amount of cargo to be shown.
	 */
	void ShowCargo(CargoDataEntry *data, CargoType cargo, StationID source, StationID next, StationID dest, uint count)
	{
		if (count == 0) return;
		bool auto_distributed = _settings_game.linkgraph.GetDistributionType(cargo) != DT_MANUAL;
		const CargoDataEntry *expand = &this->expanded_rows;
		for (int i = 0; i < NUM_COLUMNS && expand != nullptr; ++i) {
			switch (groupings[i]) {
				case GR_CARGO:
					assert(i == 0);
					data = &data->InsertOrRetrieve(cargo);
					data->SetTransfers(source != this->window_number);
					expand = expand->Retrieve(cargo);
					break;
				case GR_SOURCE:
					if (auto_distributed || source != this->window_number) {
						data = &data->InsertOrRetrieve(source);
						expand = expand->Retrieve(source);
					}
					break;
				case GR_NEXT:
					if (auto_distributed) {
						data = &data->InsertOrRetrieve(next);
						expand = expand->Retrieve(next);
					}
					break;
				case GR_DESTINATION:
					if (auto_distributed) {
						data = &data->InsertOrRetrieve(dest);
						expand = expand->Retrieve(dest);
					}
					break;
			}
		}
		data->Update(count);
	}

	void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
	{