Show vehicle route markers when cargo load by type window focused.

src/order_gui.cpp

@@ -153,6 +153,13 @@ public:
 		this->owner = v->owner;
 	}
 
+	~CargoTypeOrdersWindow()
+	{
+		if (!FocusWindowById(WC_VEHICLE_ORDERS, this->window_number)) {
+			MarkAllRouteStepsDirty(this);
+		}
+	}
+
 	virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 	{
 		if (widget == WID_CTO_HEADER) {
@@ -241,6 +248,22 @@ public:
 			SetDParam(2, this->vehicle->GetOrder(this->order_id)->GetDestination());
 		}
 	}
+
+	virtual void OnFocus(Window *previously_focused_window) OVERRIDE
+	{
+		if (HasFocusedVehicleChanged(this->window_number, previously_focused_window)) {
+			MarkAllRoutePathsDirty(this->vehicle);
+			MarkAllRouteStepsDirty(this);
+		}
+	}
+
+	virtual void OnFocusLost(Window *newly_focused_window) OVERRIDE
+	{
+		if (HasFocusedVehicleChanged(this->window_number, newly_focused_window)) {
+			MarkAllRoutePathsDirty(this->vehicle);
+			MarkAllRouteStepsDirty(this);
+		}
+	}
 };
 
 /**
@@ -1289,6 +1312,8 @@ public:
 
 	~OrdersWindow()
 	{
+		DeleteWindowById(WC_VEHICLE_CARGO_TYPE_LOAD_ORDERS, this->window_number, false);
+		DeleteWindowById(WC_VEHICLE_CARGO_TYPE_UNLOAD_ORDERS, this->window_number, false);
 		if (!FocusWindowById(WC_VEHICLE_VIEW, this->window_number)) {
 			MarkAllRouteStepsDirty(this);
 		}

src/vehicle.cpp

@@ -877,6 +877,8 @@ void Vehicle::PreDestructor()
 		DeleteWindowById(WC_VEHICLE_REFIT, this->index);
 		DeleteWindowById(WC_VEHICLE_DETAILS, this->index);
 		DeleteWindowById(WC_VEHICLE_TIMETABLE, this->index);
+		DeleteWindowById(WC_VEHICLE_CARGO_TYPE_LOAD_ORDERS, this->index);
+		DeleteWindowById(WC_VEHICLE_CARGO_TYPE_UNLOAD_ORDERS, this->index);
 		SetWindowDirty(WC_COMPANY, this->owner);
 		OrderBackup::ClearVehicle(this);
 	}

src/vehicle_gui.h

@@ -126,6 +126,8 @@ static inline bool HasFocusedVehicleChanged(const VehicleID vid, Window *ref_win
 			case WC_VEHICLE_ORDERS:
 			case WC_VEHICLE_TIMETABLE:
 			case WC_VEHICLE_VIEW:
+			case WC_VEHICLE_CARGO_TYPE_LOAD_ORDERS:
+			case WC_VEHICLE_CARGO_TYPE_UNLOAD_ORDERS:
 				return ((uint32) wn != vid);
 		}
 	}

src/viewport.cpp

@@ -1714,6 +1714,8 @@ static inline Vehicle *GetVehicleFromWindow(Window *w)
 			case WC_VEHICLE_TIMETABLE:
 			case WC_VEHICLE_DETAILS:
 			case WC_VEHICLE_REFIT:
+			case WC_VEHICLE_CARGO_TYPE_LOAD_ORDERS:
+			case WC_VEHICLE_CARGO_TYPE_UNLOAD_ORDERS:
 				if (wn != INVALID_VEHICLE) return Vehicle::Get(wn);
 				break;
 			default: