Method OnDropdownSelect

src/group_gui.cpp:1033–1083

	}

	void OnDropdownSelect(WidgetID widget, int index, int) override
	{
		switch (widget) {
			case WID_GL_GROUP_BY_DROPDOWN:
				this->UpdateVehicleGroupBy(static_cast<GroupBy>(index));
				break;

			case WID_GL_SORT_BY_DROPDOWN:
				this->vehgroups.SetSortType(index);
				break;

			case WID_GL_FILTER_BY_CARGO: // Select a cargo filter criteria
				this->SetCargoFilter(index);
				break;

			case WID_GL_MANAGE_VEHICLES_DROPDOWN:
				assert(!this->vehicles.empty());

				switch (index) {
					case ADI_REPLACE: // Replace window
						ShowReplaceGroupVehicleWindow(this->vli.ToGroupID(), this->vli.vtype);
						break;
					case ADI_SERVICE: // Send for servicing
					case ADI_DEPOT: { // Send to Depots
						Command<CMD_SEND_VEHICLE_TO_DEPOT>::Post(GetCmdSendToDepotMsg(this->vli.vtype), VehicleID::Invalid(), (index == ADI_SERVICE ? DepotCommandFlag::Service : DepotCommandFlags{}) | DepotCommandFlag::MassSend, this->vli);
						break;
					}

					case ADI_CREATE_GROUP: // Create group
						Command<CMD_ADD_VEHICLE_GROUP>::Post(CcAddVehicleNewGroup, NEW_GROUP, VehicleID::Invalid(), false, this->vli);
						break;

					case ADI_ADD_SHARED: // Add shared Vehicles
						assert(Group::IsValidID(this->vli.ToGroupID()));

						Command<CMD_ADD_SHARED_VEHICLE_GROUP>::Post(STR_ERROR_GROUP_CAN_T_ADD_SHARED_VEHICLE, this->vli.ToGroupID(), this->vli.vtype);
						break;
					case ADI_REMOVE_ALL: // Remove all Vehicles from the selected group
						assert(Group::IsValidID(this->vli.ToGroupID()));

						Command<CMD_REMOVE_ALL_VEHICLES_GROUP>::Post(STR_ERROR_GROUP_CAN_T_REMOVE_ALL_VEHICLES, this->vli.ToGroupID());
						break;
					default: NOT_REACHED();
				}
				break;

			default: NOT_REACHED();
		}

		this->SetDirty();
	}

	void OnGameTick() override
	{