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[openttd/fttd.git] / src / order_gui.cpp

/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file order_gui.cpp GUI related to orders. */

#include "stdafx.h"
#include "command_func.h"
#include "viewport_func.h"
#include "roadveh.h"
#include "timetable.h"
#include "strings_func.h"
#include "company_func.h"
#include "widgets/dropdown_type.h"
#include "widgets/dropdown_func.h"
#include "textbuf_gui.h"
#include "string.h"
#include "tilehighlight_func.h"
#include "network/network.h"
#include "station_base.h"
#include "waypoint_base.h"
#include "core/geometry_func.hpp"
#include "hotkeys.h"
#include "aircraft.h"
#include "engine_func.h"

#include "widgets/order_widget.h"


/** Order load types that could be given to station orders. */
static const StringID _station_load_types[][5][5] = {
        {
                /* No refitting. */
                {
                        STR_EMPTY,
                        INVALID_STRING_ID,
                        STR_ORDER_FULL_LOAD,
                        STR_ORDER_FULL_LOAD_ANY,
                        STR_ORDER_NO_LOAD,
                }, {
                        STR_ORDER_UNLOAD,
                        INVALID_STRING_ID,
                        STR_ORDER_UNLOAD_FULL_LOAD,
                        STR_ORDER_UNLOAD_FULL_LOAD_ANY,
                        STR_ORDER_UNLOAD_NO_LOAD,
                }, {
                        STR_ORDER_TRANSFER,
                        INVALID_STRING_ID,
                        STR_ORDER_TRANSFER_FULL_LOAD,
                        STR_ORDER_TRANSFER_FULL_LOAD_ANY,
                        STR_ORDER_TRANSFER_NO_LOAD,
                }, {
                        /* Unload and transfer do not work together. */
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                }, {
                        STR_ORDER_NO_UNLOAD,
                        INVALID_STRING_ID,
                        STR_ORDER_NO_UNLOAD_FULL_LOAD,
                        STR_ORDER_NO_UNLOAD_FULL_LOAD_ANY,
                        STR_ORDER_NO_UNLOAD_NO_LOAD,
                }
        }, {
                /* With auto-refitting. No loading and auto-refitting do not work together. */
                {
                        STR_ORDER_AUTO_REFIT,
                        INVALID_STRING_ID,
                        STR_ORDER_FULL_LOAD_REFIT,
                        STR_ORDER_FULL_LOAD_ANY_REFIT,
                        INVALID_STRING_ID,
                }, {
                        STR_ORDER_UNLOAD_REFIT,
                        INVALID_STRING_ID,
                        STR_ORDER_UNLOAD_FULL_LOAD_REFIT,
                        STR_ORDER_UNLOAD_FULL_LOAD_ANY_REFIT,
                        INVALID_STRING_ID,
                }, {
                        STR_ORDER_TRANSFER_REFIT,
                        INVALID_STRING_ID,
                        STR_ORDER_TRANSFER_FULL_LOAD_REFIT,
                        STR_ORDER_TRANSFER_FULL_LOAD_ANY_REFIT,
                        INVALID_STRING_ID,
                }, {
                        /* Unload and transfer do not work together. */
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                        INVALID_STRING_ID,
                }, {
                        STR_ORDER_NO_UNLOAD_REFIT,
                        INVALID_STRING_ID,
                        STR_ORDER_NO_UNLOAD_FULL_LOAD_REFIT,
                        STR_ORDER_NO_UNLOAD_FULL_LOAD_ANY_REFIT,
                        INVALID_STRING_ID,
                }
        }
};

static const StringID _order_non_stop_drowdown[] = {
        STR_ORDER_GO_TO,
        STR_ORDER_GO_NON_STOP_TO,
        STR_ORDER_GO_VIA,
        STR_ORDER_GO_NON_STOP_VIA,
        INVALID_STRING_ID
};

static const StringID _order_full_load_drowdown[] = {
        STR_ORDER_DROP_LOAD_IF_POSSIBLE,
        STR_EMPTY,
        STR_ORDER_DROP_FULL_LOAD_ALL,
        STR_ORDER_DROP_FULL_LOAD_ANY,
        STR_ORDER_DROP_NO_LOADING,
        INVALID_STRING_ID
};

static const StringID _order_unload_drowdown[] = {
        STR_ORDER_DROP_UNLOAD_IF_ACCEPTED,
        STR_ORDER_DROP_UNLOAD,
        STR_ORDER_DROP_TRANSFER,
        STR_EMPTY,
        STR_ORDER_DROP_NO_UNLOADING,
        INVALID_STRING_ID
};

static const StringID _order_goto_dropdown[] = {
        STR_ORDER_GO_TO,
        STR_ORDER_GO_TO_NEAREST_DEPOT,
        STR_ORDER_CONDITIONAL,
        STR_ORDER_SHARE,
        INVALID_STRING_ID
};

static const StringID _order_goto_dropdown_aircraft[] = {
        STR_ORDER_GO_TO,
        STR_ORDER_GO_TO_NEAREST_HANGAR,
        STR_ORDER_CONDITIONAL,
        STR_ORDER_SHARE,
        INVALID_STRING_ID
};

/** Variables for conditional orders; this defines the order of appearance in the dropdown box */
static const OrderConditionVariable _order_conditional_variable[] = {
        OCV_LOAD_PERCENTAGE,
        OCV_RELIABILITY,
        OCV_MAX_SPEED,
        OCV_AGE,
        OCV_REMAINING_LIFETIME,
        OCV_REQUIRES_SERVICE,
        OCV_UNCONDITIONALLY,
};

static const StringID _order_conditional_condition[] = {
        STR_ORDER_CONDITIONAL_COMPARATOR_EQUALS,
        STR_ORDER_CONDITIONAL_COMPARATOR_NOT_EQUALS,
        STR_ORDER_CONDITIONAL_COMPARATOR_LESS_THAN,
        STR_ORDER_CONDITIONAL_COMPARATOR_LESS_EQUALS,
        STR_ORDER_CONDITIONAL_COMPARATOR_MORE_THAN,
        STR_ORDER_CONDITIONAL_COMPARATOR_MORE_EQUALS,
        STR_ORDER_CONDITIONAL_COMPARATOR_IS_TRUE,
        STR_ORDER_CONDITIONAL_COMPARATOR_IS_FALSE,
        INVALID_STRING_ID,
};

extern uint ConvertSpeedToDisplaySpeed(uint speed);
extern uint ConvertDisplaySpeedToSpeed(uint speed);

static const StringID _order_depot_action_dropdown[] = {
        STR_ORDER_DROP_GO_ALWAYS_DEPOT,
        STR_ORDER_DROP_SERVICE_DEPOT,
        STR_ORDER_DROP_HALT_DEPOT,
        INVALID_STRING_ID
};

static int DepotActionStringIndex(const Order *order)
{
        if (order->GetDepotActionType() & ODATFB_HALT) {
                return DA_STOP;
        } else if (order->GetDepotOrderType() & ODTFB_SERVICE) {
                return DA_SERVICE;
        } else {
                return DA_ALWAYS_GO;
        }
}

/**
 * Draws an order in order or timetable GUI
 * @param v Vehicle the order belongs to
 * @param order The order to draw
 * @param order_index Index of the order in the orders of the vehicle
 * @param dpi Area to draw on
 * @param y Y position for drawing
 * @param selected True, if the order is selected
 * @param timetable True, when drawing in the timetable GUI
 * @param left Left border for text drawing
 * @param middle X position between order index and order text
 * @param right Right border for text drawing
 */
void DrawOrderString (const Vehicle *v, const Order *order, int order_index,
        BlitArea *dpi, int y, bool selected, bool timetable,
        int left, int middle, int right)
{
        bool rtl = _current_text_dir == TD_RTL;

        SpriteID sprite = rtl ? SPR_ARROW_LEFT : SPR_ARROW_RIGHT;
        Dimension sprite_size = GetSpriteSize(sprite);
        if (v->cur_real_order_index == order_index) {
                DrawSprite (dpi, sprite, PAL_NONE, rtl ? right -     sprite_size.width : left,                     y + ((int)FONT_HEIGHT_NORMAL - (int)sprite_size.height) / 2);
                DrawSprite (dpi, sprite, PAL_NONE, rtl ? right - 2 * sprite_size.width : left + sprite_size.width, y + ((int)FONT_HEIGHT_NORMAL - (int)sprite_size.height) / 2);
        } else if (v->cur_implicit_order_index == order_index) {
                DrawSprite (dpi, sprite, PAL_NONE, rtl ? right -     sprite_size.width : left,                     y + ((int)FONT_HEIGHT_NORMAL - (int)sprite_size.height) / 2);
        }

        TextColour colour = TC_BLACK;
        if (order->IsType(OT_IMPLICIT)) {
                colour = (selected ? TC_SILVER : TC_GREY) | TC_NO_SHADE;
        } else if (selected) {
                colour = TC_WHITE;
        }

        SetDParam(0, order_index + 1);
        DrawString (dpi, left, rtl ? right - 2 * sprite_size.width - 3 : middle, y, STR_ORDER_INDEX, colour, SA_RIGHT | SA_FORCE);

        SetDParam(5, STR_EMPTY);
        SetDParam(8, STR_EMPTY);

        /* Check range for aircraft. */
        if (v->type == VEH_AIRCRAFT && Aircraft::From(v)->GetRange() > 0 && order->IsGotoOrder()) {
                const Order *next = order->next != NULL ? order->next : v->GetFirstOrder();
                if (GetOrderDistance(order, next, v) > Aircraft::From(v)->acache.cached_max_range_sqr) SetDParam(8, STR_ORDER_OUT_OF_RANGE);
        }

        switch (order->GetType()) {
                case OT_DUMMY:
                        SetDParam(0, STR_INVALID_ORDER);
                        SetDParam(1, order->GetDestination());
                        break;

                case OT_IMPLICIT:
                        SetDParam(0, STR_ORDER_GO_TO_STATION);
                        SetDParam(1, STR_ORDER_GO_TO);
                        SetDParam(2, order->GetDestination());
                        SetDParam(3, timetable ? STR_EMPTY : STR_ORDER_IMPLICIT);
                        break;

                case OT_GOTO_STATION: {
                        OrderLoadFlags load = order->GetLoadType();
                        OrderUnloadFlags unload = order->GetUnloadType();

                        SetDParam(0, STR_ORDER_GO_TO_STATION);
                        SetDParam(1, STR_ORDER_GO_TO + (v->IsGroundVehicle() ? order->GetNonStopType() : 0));
                        SetDParam(2, order->GetDestination());

                        if (timetable) {
                                SetDParam(3, STR_EMPTY);

                                if (order->GetWaitTime() > 0) {
                                        SetDParam(5, order->IsWaitTimetabled() ? STR_TIMETABLE_STAY_FOR : STR_TIMETABLE_STAY_FOR_ESTIMATED);
                                        SetTimetableParams(6, 7, order->GetWaitTime());
                                }
                        } else {
                                SetDParam(3, (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) ? STR_EMPTY : _station_load_types[order->IsRefit()][unload][load]);
                                if (order->IsRefit()) {
                                        SetDParam(4, order->IsAutoRefit() ? STR_ORDER_AUTO_REFIT_ANY : CargoSpec::Get(order->GetRefitCargo())->name);
                                }
                                if (v->type == VEH_TRAIN && (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) == 0) {
                                        SetDParam(5, order->GetStopLocation() + STR_ORDER_STOP_LOCATION_NEAR_END);
                                }
                        }
                        break;
                }

                case OT_GOTO_DEPOT:
                        if (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) {
                                SetDParam(0, STR_ORDER_GO_TO_NEAREST_DEPOT_FORMAT);
                                if (v->type == VEH_AIRCRAFT) {
                                        SetDParam(2, STR_ORDER_NEAREST_HANGAR);
                                        SetDParam(3, STR_EMPTY);
                                } else {
                                        SetDParam(2, STR_ORDER_NEAREST_DEPOT);
                                        SetDParam(3, STR_ORDER_TRAIN_DEPOT + v->type);
                                }
                        } else {
                                SetDParam(0, STR_ORDER_GO_TO_DEPOT_FORMAT);
                                SetDParam(2, v->type);
                                SetDParam(3, order->GetDestination());
                        }

                        if (order->GetDepotOrderType() & ODTFB_SERVICE) {
                                SetDParam(1, (order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS) ? STR_ORDER_SERVICE_NON_STOP_AT : STR_ORDER_SERVICE_AT);
                        } else {
                                SetDParam(1, (order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS) ? STR_ORDER_GO_NON_STOP_TO : STR_ORDER_GO_TO);
                        }

                        if (!timetable && (order->GetDepotActionType() & ODATFB_HALT)) {
                                SetDParam(5, STR_ORDER_STOP_ORDER);
                        }

                        if (!timetable && order->IsRefit()) {
                                SetDParam(5, (order->GetDepotActionType() & ODATFB_HALT) ? STR_ORDER_REFIT_STOP_ORDER : STR_ORDER_REFIT_ORDER);
                                SetDParam(6, CargoSpec::Get(order->GetRefitCargo())->name);
                        }
                        break;

                case OT_GOTO_WAYPOINT:
                        SetDParam(0, (order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS) ? STR_ORDER_GO_NON_STOP_TO_WAYPOINT : STR_ORDER_GO_TO_WAYPOINT);
                        SetDParam(1, order->GetDestination());
                        break;

                case OT_CONDITIONAL:
                        SetDParam(1, order->GetConditionSkipToOrder() + 1);
                        if (order->GetConditionVariable() == OCV_UNCONDITIONALLY) {
                                SetDParam(0, STR_ORDER_CONDITIONAL_UNCONDITIONAL);
                        } else {
                                OrderConditionComparator occ = order->GetConditionComparator();
                                SetDParam(0, (occ == OCC_IS_TRUE || occ == OCC_IS_FALSE) ? STR_ORDER_CONDITIONAL_TRUE_FALSE : STR_ORDER_CONDITIONAL_NUM);
                                SetDParam(2, STR_ORDER_CONDITIONAL_LOAD_PERCENTAGE + order->GetConditionVariable());
                                SetDParam(3, STR_ORDER_CONDITIONAL_COMPARATOR_EQUALS + occ);

                                uint value = order->GetConditionValue();
                                if (order->GetConditionVariable() == OCV_MAX_SPEED) value = ConvertSpeedToDisplaySpeed(value);
                                SetDParam(4, value);
                        }

                        if (timetable && order->GetWaitTime() > 0) {
                                SetDParam(5, order->IsWaitTimetabled() ? STR_TIMETABLE_AND_TRAVEL_FOR : STR_TIMETABLE_AND_TRAVEL_FOR_ESTIMATED);
                                SetTimetableParams(6, 7, order->GetWaitTime());
                        } else {
                                SetDParam(5, STR_EMPTY);
                        }
                        break;

                default: NOT_REACHED();
        }

        DrawString (dpi, rtl ? left : middle, rtl ? middle : right, y, STR_ORDER_TEXT, colour);
}


StringID GetErrCloneOrder (TileIndex tile, uint32 p1, uint32 p2, const char *text)
{
        switch (GB(p1, 30, 2)) {
                case CO_SHARE: return STR_ERROR_CAN_T_SHARE_ORDER_LIST;
                case CO_COPY:  return STR_ERROR_CAN_T_COPY_ORDER_LIST;
                default:       return STR_ERROR_CAN_T_STOP_SHARING_ORDER_LIST;
        }
}

StringID GetErrSkipToOrder (TileIndex tile, uint32 p1, uint32 p2, const char *text)
{
        return HasBit (p1, 31) ? STR_ERROR_CAN_T_SKIP_TO_ORDER : STR_ERROR_CAN_T_SKIP_ORDER;
}


/**
 * Get the order command a vehicle can do in a given tile.
 * @param v Vehicle involved.
 * @param tile Tile being queried.
 * @return The order associated to vehicle v in given tile (or empty order if vehicle can do nothing in the tile).
 */
static BaseOrder GetOrderCmdFromTile (const Vehicle *v, TileIndex tile)
{
        BaseOrder order;

        switch (GetTileType(tile)) {
                case TT_MISC:
                        if (!IsTileSubtype(tile, TT_MISC_DEPOT)) break;
                        if (v->type != (IsRailDepot(tile) ? VEH_TRAIN : VEH_ROAD)) break;
                        if (!IsTileOwner (tile, _local_company)) break;
                        order.MakeGoToDepot (GetDepotIndex (tile), ODTFB_PART_OF_ORDERS,
                                _settings_client.gui.new_nonstop ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);
                        if (_ctrl_pressed) order.SetDepotOrderType((OrderDepotTypeFlags)(order.GetDepotOrderType() ^ ODTFB_SERVICE));
                        return order;

                case TT_WATER:
                        if (v->type != VEH_SHIP) break;
                        if (!IsShipDepot (tile)) break;
                        if (!IsTileOwner (tile, _local_company)) break;
                        order.MakeGoToDepot (GetDepotIndex (tile), ODTFB_PART_OF_ORDERS, ONSF_STOP_EVERYWHERE);
                        if (_ctrl_pressed) order.SetDepotOrderType ((OrderDepotTypeFlags)(order.GetDepotOrderType() ^ ODTFB_SERVICE));
                        return order;

                case TT_STATION: {
                        StationID st_index = GetStationIndex (tile);
                        switch (GetStationType (tile)) {
                                case STATION_WAYPOINT:
                                        /* check waypoint */
                                        if (v->type != VEH_TRAIN) break;
                                        if (!IsTileOwner (tile, _local_company)) break;
                                        order.MakeGoToWaypoint (st_index);
                                        if (_settings_client.gui.new_nonstop != _ctrl_pressed) order.SetNonStopType (ONSF_NO_STOP_AT_ANY_STATION);
                                        return order;

                                case STATION_BUOY:
                                        /* check buoy (no ownership) */
                                        if (v->type != VEH_SHIP) break;
                                        order.MakeGoToWaypoint (st_index);
                                        return order;

                                case STATION_AIRPORT:
                                        /* special case for hangars */
                                        if (v->type == VEH_AIRCRAFT && IsTileOwner (tile, _local_company) && IsHangar(tile)) {
                                                order.MakeGoToDepot (st_index, ODTFB_PART_OF_ORDERS, ONSF_STOP_EVERYWHERE);
                                                if (_ctrl_pressed) order.SetDepotOrderType ((OrderDepotTypeFlags)(order.GetDepotOrderType() ^ ODTFB_SERVICE));
                                                return order;
                                        }
                                        /* fall through */
                                default:
                                        const Station *st = Station::Get (st_index);
                                        if (st->owner != _local_company && st->owner != OWNER_NONE) break;

                                        byte facil = (v->type == VEH_SHIP) ? FACIL_DOCK :
                                                (v->type == VEH_TRAIN)     ? FACIL_TRAIN :
                                                (v->type == VEH_AIRCRAFT)  ? FACIL_AIRPORT :
                                                RoadVehicle::From(v)->IsBus() ? FACIL_BUS_STOP : FACIL_TRUCK_STOP;

                                        if (st->facilities & facil) {
                                                order.MakeGoToStation (st_index);
                                                if (_ctrl_pressed) order.SetLoadType(OLF_FULL_LOAD_ANY);
                                                if (_settings_client.gui.new_nonstop && v->IsGroundVehicle()) order.SetNonStopType(ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
                                                order.SetStopLocation(v->type == VEH_TRAIN ? (OrderStopLocation)(_settings_client.gui.stop_location) : OSL_PLATFORM_FAR_END);
                                                return order;
                                        }
                        }

                        break;
                }

                default:
                        break;
        }

        /* not found */
        return order;
}

/** Hotkeys for order window. */
enum {
        OHK_SKIP,
        OHK_DELETE,
        OHK_GOTO,
        OHK_NONSTOP,
        OHK_FULLLOAD,
        OHK_UNLOAD,
        OHK_NEAREST_DEPOT,
        OHK_ALWAYS_SERVICE,
        OHK_TRANSFER,
        OHK_NO_UNLOAD,
        OHK_NO_LOAD,
};

/**
 * %Order window code for all vehicles.
 *
 * At the bottom of the window two button rows are located for changing the orders of the vehicle.
 *
 * \section top-row Top row
 * The top-row is for manipulating an individual order. What row is displayed depends on the type of vehicle, and whether or not you are the owner of the vehicle.
 *
 * The top-row buttons of one of your trains or road vehicles is one of the following three cases:
 * \verbatim
 * +-----------------+-----------------+-----------------+-----------------+
 * |    NON-STOP     |    FULL_LOAD    |     UNLOAD      |      REFIT      | (normal)
 * +-----------------+-----+-----------+-----------+-----+-----------------+
 * |       COND_VAR        |    COND_COMPARATOR    |      COND_VALUE       | (for conditional orders)
 * +-----------------+-----+-----------+-----------+-----+-----------------+
 * |    NON-STOP     |     SERVICE     |     (empty)     |      REFIT      | (for depot orders)
 * +-----------------+-----------------+-----------------+-----------------+
 * \endverbatim
 *
 * Airplanes and ships have one of the following three top-row button rows:
 * \verbatim
 * +-----------------+-----------------+-----------------+
 * |    FULL_LOAD    |     UNLOAD      |      REFIT      | (normal)
 * +-----------------+-----------------+-----------------+
 * |    COND_VAR     | COND_COMPARATOR |   COND_VALUE    | (for conditional orders)
 * +-----------------+--------+--------+-----------------+
 * |            REFIT         |          SERVICE         | (for depot order)
 * +--------------------------+--------------------------+
 * \endverbatim
 *
 * \section bottom-row Bottom row
 * The second row (the bottom row) is for manipulating the list of orders:
 * \verbatim
 * +-----------------+-----------------+-----------------+
 * |      SKIP       |     DELETE      |      GOTO       |
 * +-----------------+-----------------+-----------------+
 * \endverbatim
 *
 * For vehicles of other companies, both button rows are not displayed.
 */
struct OrdersWindow : public Window {
private:
        /** Under what reason are we using the PlaceObject functionality? */
        enum OrderPlaceObjectState {
                OPOS_NONE,
                OPOS_GOTO,
                OPOS_CONDITIONAL,
                OPOS_SHARE,
                OPOS_END,
        };

        /** Displayed planes of the #NWID_SELECTION widgets. */
        enum DisplayPane {
                /* WID_O_SEL_TOP_ROW_GROUNDVEHICLE */
                DP_GROUNDVEHICLE_ROW_NORMAL      = 0, ///< Display the row for normal/depot orders in the top row of the train/rv order window.
                DP_GROUNDVEHICLE_ROW_CONDITIONAL = 1, ///< Display the row for conditional orders in the top row of the train/rv order window.

                /* WID_O_SEL_TOP_LEFT */
                DP_LEFT_LOAD       = 0, ///< Display 'load' in the left button of the top row of the train/rv order window.
                DP_LEFT_SERVICE    = 1, ///< Display 'service' in the left button of the top row of the train/rv order window.

                /* WID_O_SEL_TOP_MIDDLE */
                DP_MIDDLE_UNLOAD   = 0, ///< Display 'unload' in the middle button of the top row of the train/rv order window.
                DP_MIDDLE_EMPTY    = 1, ///< Display an empty panel in the middle button of the top row of the train/rv order window.

                /* WID_O_SEL_TOP_RIGHT */
                DP_RIGHT_REFIT      = 0, ///< Display 'refit' (button) in the right button of the top row of the train/rv order window.
                DP_RIGHT_REFIT_AUTO = 1, ///< Display 'refit' (dropdown) in the right button of the top row of the train/rv order window.

                /* WID_O_SEL_TOP_ROW */
                DP_ROW_LOAD        = 0, ///< Display 'load' / 'unload' / 'refit' buttons in the top row of the ship/airplane order window.
                DP_ROW_DEPOT       = 1, ///< Display 'refit' / 'service' buttons in the top row of the ship/airplane order window.
                DP_ROW_CONDITIONAL = 2, ///< Display the conditional order buttons in the top row of the ship/airplane order window.

                /* WID_O_SEL_BOTTOM_MIDDLE */
                DP_BOTTOM_MIDDLE_DELETE       = 0, ///< Display 'delete' in the middle button of the bottom row of the vehicle order window.
                DP_BOTTOM_MIDDLE_STOP_SHARING = 1, ///< Display 'stop sharing' in the middle button of the bottom row of the vehicle order window.
        };

        int selected_order;
        VehicleOrderID order_over;         ///< Order over which another order is dragged, \c INVALID_VEH_ORDER_ID if none.
        OrderPlaceObjectState goto_type;
        const Vehicle *vehicle; ///< Vehicle owning the orders being displayed and manipulated.
        Scrollbar *vscroll;
        bool can_do_refit;     ///< Vehicle chain can be refitted in depot.
        bool can_do_autorefit; ///< Vehicle chain can be auto-refitted.

        /**
         * Return the memorised selected order.
         * @return the memorised order if it is a valid one
         *  else return the number of orders
         */
        VehicleOrderID OrderGetSel() const
        {
                int num = this->selected_order;
                return (num >= 0 && num < vehicle->GetNumOrders()) ? num : vehicle->GetNumOrders();
        }

        /**
         * Calculate the selected order.
         * The calculation is based on the relative (to the window) y click position and
         *  the position of the scrollbar.
         *
         * @param y Y-value of the click relative to the window origin
         * @return The selected order if the order is valid, else return \c INVALID_VEH_ORDER_ID.
         */
        VehicleOrderID GetOrderFromPt(int y)
        {
                NWidgetBase *nwid = this->GetWidget<NWidgetBase>(WID_O_ORDER_LIST);
                int sel = (y - nwid->pos_y - WD_FRAMERECT_TOP) / nwid->resize_y; // Selected line in the WID_O_ORDER_LIST panel.

                if ((uint)sel >= this->vscroll->GetCapacity()) return INVALID_VEH_ORDER_ID;

                sel += this->vscroll->GetPosition();

                return (sel <= vehicle->GetNumOrders() && sel >= 0) ? sel : INVALID_VEH_ORDER_ID;
        }

        /**
         * Handle the click on the goto button.
         */
        void OrderClick_Goto(OrderPlaceObjectState type)
        {
                assert(type > OPOS_NONE && type < OPOS_END);

                static const PointerMode goto_mode[OPOS_END - 1] = {
                        POINTER_TILE_VEHICLE, // OPOS_GOTO
                        POINTER_NONE,         // OPOS_CONDITIONAL
                        POINTER_VEHICLE,      // OPOS_SHARE
                };
                SetPointerMode (goto_mode[type - 1], this, ANIMCURSOR_PICKSTATION);
                this->goto_type = type;
                this->SetWidgetDirty(WID_O_GOTO);
        }

        /**
         * Handle the click on the full load button.
         * @param load_type the way to load.
         */
        void OrderClick_FullLoad(int load_type)
        {
                VehicleOrderID sel_ord = this->OrderGetSel();
                const Order *order = this->vehicle->GetOrder(sel_ord);

                if (order == NULL || order->GetLoadType() == load_type) return;

                if (load_type < 0) {
                        load_type = order->GetLoadType() == OLF_LOAD_IF_POSSIBLE ? OLF_FULL_LOAD_ANY : OLF_LOAD_IF_POSSIBLE;
                }
                DoCommandP(this->vehicle->tile, this->vehicle->index + (sel_ord << 20), MOF_LOAD | (load_type << 4), CMD_MODIFY_ORDER);
        }

        /**
         * Handle the 'no loading' hotkey
         */
        void OrderHotkey_NoLoad()
        {
                this->OrderClick_FullLoad(OLFB_NO_LOAD);
        }

        /**
         * Handle the click on the service.
         */
        void OrderClick_Service(int i)
        {
                VehicleOrderID sel_ord = this->OrderGetSel();

                if (i < 0) {
                        const Order *order = this->vehicle->GetOrder(sel_ord);
                        if (order == NULL) return;
                        i = (order->GetDepotOrderType() & ODTFB_SERVICE) ? DA_ALWAYS_GO : DA_SERVICE;
                }
                DoCommandP(this->vehicle->tile, this->vehicle->index + (sel_ord << 20), MOF_DEPOT_ACTION | (i << 4), CMD_MODIFY_ORDER);
        }

        /**
         * Handle the click on the service in nearest depot button.
         */
        void OrderClick_NearestDepot()
        {
                Order order;
                order.next = NULL;
                order.index = 0;
                order.MakeGoToDepot(0, ODTFB_PART_OF_ORDERS,
                                _settings_client.gui.new_nonstop && this->vehicle->IsGroundVehicle() ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);
                order.SetDepotActionType(ODATFB_NEAREST_DEPOT);

                DoCommandP(this->vehicle->tile, this->vehicle->index + (this->OrderGetSel() << 20), order.Pack(), CMD_INSERT_ORDER);
        }

        /**
         * Handle the click on the unload button.
         */
        void OrderClick_Unload(int unload_type)
        {
                VehicleOrderID sel_ord = this->OrderGetSel();
                const Order *order = this->vehicle->GetOrder(sel_ord);

                if (order == NULL || order->GetUnloadType() == unload_type) return;

                if (unload_type < 0) {
                        unload_type = order->GetUnloadType() == OUF_UNLOAD_IF_POSSIBLE ? OUFB_UNLOAD : OUF_UNLOAD_IF_POSSIBLE;
                }

                DoCommandP(this->vehicle->tile, this->vehicle->index + (sel_ord << 20), MOF_UNLOAD | (unload_type << 4), CMD_MODIFY_ORDER);

                /* Transfer orders with leave empty as default */
                if (unload_type == OUFB_TRANSFER && order->GetLoadType() != OLFB_NO_LOAD && !order->IsRefit()) {
                        DoCommandP(this->vehicle->tile, this->vehicle->index + (sel_ord << 20), MOF_LOAD | (OLFB_NO_LOAD << 4), CMD_MODIFY_ORDER);
                        this->SetWidgetDirty(WID_O_FULL_LOAD);
                }
        }

        /**
         * Handle the transfer hotkey
         */
        void OrderHotkey_Transfer()
        {
                this->OrderClick_Unload(OUFB_TRANSFER);
        }

        /**
         * Handle the 'no unload' hotkey
         */
        void OrderHotkey_NoUnload()
        {
                this->OrderClick_Unload(OUFB_NO_UNLOAD);
        }

        /**
         * Handle the click on the nonstop button.
         * @param non_stop what non-stop type to use; -1 to use the 'next' one.
         */
        void OrderClick_Nonstop(int non_stop)
        {
                if (!this->vehicle->IsGroundVehicle()) return;

                VehicleOrderID sel_ord = this->OrderGetSel();
                const Order *order = this->vehicle->GetOrder(sel_ord);

                if (order == NULL || order->GetNonStopType() == non_stop) return;

                /* Keypress if negative, so 'toggle' to the next */
                if (non_stop < 0) {
                        non_stop = order->GetNonStopType() ^ ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS;
                }

                this->SetWidgetDirty(WID_O_NON_STOP);
                DoCommandP(this->vehicle->tile, this->vehicle->index + (sel_ord << 20), MOF_NON_STOP | non_stop << 4,  CMD_MODIFY_ORDER);
        }

        /**
         * Handle the click on the skip button.
         * If ctrl is pressed, skip to selected order, else skip to current order + 1
         */
        void OrderClick_Skip()
        {
                /* Don't skip when there's nothing to skip */
                if (_ctrl_pressed && this->vehicle->cur_implicit_order_index == this->OrderGetSel()) return;
                if (this->vehicle->GetNumOrders() <= 1) return;

                DoCommandP(this->vehicle->tile, this->vehicle->index | (_ctrl_pressed ? (1 << 31) : 0),
                                _ctrl_pressed ? this->OrderGetSel() : ((this->vehicle->cur_implicit_order_index + 1) % this->vehicle->GetNumOrders()),
                                CMD_SKIP_TO_ORDER);
        }

        /**
         * Handle the click on the delete button.
         */
        void OrderClick_Delete()
        {
                /* When networking, move one order lower */
                int selected = this->selected_order + (int)_networking;

                if (DoCommandP(this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), CMD_DELETE_ORDER)) {
                        this->selected_order = selected >= this->vehicle->GetNumOrders() ? -1 : selected;
                        this->UpdateButtonState();
                }
        }

        /**
         * Handle the click on the 'stop sharing' button.
         * If 'End of Shared Orders' isn't selected, do nothing. If Ctrl is pressed, call OrderClick_Delete and exit.
         * To stop sharing this vehicle order list, we copy the orders of a vehicle that share this order list. That way we
         * exit the group of shared vehicles while keeping the same order list.
         */
        void OrderClick_StopSharing()
        {
                /* Don't try to stop sharing orders if 'End of Shared Orders' isn't selected. */
                if (!this->vehicle->IsOrderListShared() || this->selected_order != this->vehicle->GetNumOrders()) return;
                /* If Ctrl is pressed, delete the order list as if we clicked the 'Delete' button. */
                if (_ctrl_pressed) {
                        this->OrderClick_Delete();
                        return;
                }

                /* Get another vehicle that share orders with this vehicle. */
                Vehicle *other_shared = (this->vehicle->FirstShared() == this->vehicle) ? this->vehicle->NextShared() : this->vehicle->PreviousShared();
                /* Copy the order list of the other vehicle. */
                if (DoCommandP(this->vehicle->tile, this->vehicle->index | CO_UNSHARE_COPY << 30, other_shared->index, CMD_CLONE_ORDER)) {
                        this->UpdateButtonState();
                }
        }

        /** Cache auto-refittability of the vehicle chain. */
        void UpdateAutoRefitState()
        {
                this->can_do_refit = false;
                this->can_do_autorefit = false;
                for (const Vehicle *w = this->vehicle; w != NULL; w = w->IsGroundVehicle() ? w->Next() : NULL) {
                        if (IsEngineRefittable(w->engine_type)) this->can_do_refit = true;
                        if (HasBit(Engine::Get(w->engine_type)->info.misc_flags, EF_AUTO_REFIT)) this->can_do_autorefit = true;
                }
        }

public:
        OrdersWindow (const WindowDesc *desc, const Vehicle *v) :
                Window (desc), selected_order (-1),
                order_over (INVALID_VEH_ORDER_ID),
                goto_type (OPOS_NONE), vehicle (v), vscroll (NULL),
                can_do_refit (false), can_do_autorefit (false)
        {
                this->CreateNestedTree();
                this->vscroll = this->GetScrollbar(WID_O_SCROLLBAR);
                this->InitNested(v->index);

                this->owner = v->owner;

                this->UpdateAutoRefitState();

                if (_settings_client.gui.quick_goto && v->owner == _local_company) {
                        /* If there are less than 2 station, make Go To active. */
                        int station_orders = 0;
                        const Order *order;
                        FOR_VEHICLE_ORDERS(v, order) {
                                if (order->IsType(OT_GOTO_STATION)) station_orders++;
                        }

                        if (station_orders < 2) this->OrderClick_Goto(OPOS_GOTO);
                }
                this->OnInvalidateData(VIWD_MODIFY_ORDERS);
        }

        virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
        {
                switch (widget) {
                        case WID_O_ORDER_LIST:
                                resize->height = FONT_HEIGHT_NORMAL;
                                size->height = 6 * resize->height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
                                break;

                        case WID_O_COND_VARIABLE: {
                                Dimension d = {0, 0};
                                for (uint i = 0; i < lengthof(_order_conditional_variable); i++) {
                                        d = maxdim(d, GetStringBoundingBox(STR_ORDER_CONDITIONAL_LOAD_PERCENTAGE + _order_conditional_variable[i]));
                                }
                                d.width += padding.width;
                                d.height += padding.height;
                                *size = maxdim(*size, d);
                                break;
                        }

                        case WID_O_COND_COMPARATOR: {
                                Dimension d = {0, 0};
                                for (int i = 0; _order_conditional_condition[i] != INVALID_STRING_ID; i++) {
                                        d = maxdim(d, GetStringBoundingBox(_order_conditional_condition[i]));
                                }
                                d.width += padding.width;
                                d.height += padding.height;
                                *size = maxdim(*size, d);
                                break;
                        }
                }
        }

        /**
         * Some data on this window has become invalid.
         * @param data Information about the changed data.
         * @param gui_scope Whether the call is done from GUI scope. You may not do everything when not in GUI scope. See #InvalidateWindowData() for details.
         */
        virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
        {
                VehicleOrderID from = INVALID_VEH_ORDER_ID;
                VehicleOrderID to   = INVALID_VEH_ORDER_ID;

                switch (data) {
                        case VIWD_AUTOREPLACE:
                                /* Autoreplace replaced the vehicle */
                                this->vehicle = Vehicle::Get(this->window_number);
                                /* FALL THROUGH */

                        case VIWD_CONSIST_CHANGED:
                                /* Vehicle composition was changed. */
                                this->UpdateAutoRefitState();
                                break;

                        case VIWD_REMOVE_ALL_ORDERS:
                                /* Removed / replaced all orders (after deleting / sharing) */
                                if (this->selected_order == -1) break;

                                this->DeleteChildWindows();
                                HideDropDownMenu(this);
                                this->selected_order = -1;
                                break;

                        case VIWD_MODIFY_ORDERS:
                                /* Some other order changes */
                                break;

                        default:
                                if (data < 0) break;

                                if (gui_scope) break; // only do this once; from command scope
                                from = GB(data, 0, 8);
                                to   = GB(data, 8, 8);
                                /* Moving an order. If one of these is INVALID_VEH_ORDER_ID, then
                                 * the order is being created / removed */
                                if (this->selected_order == -1) break;

                                if (from == to) break; // no need to change anything

                                if (from != this->selected_order) {
                                        /* Moving from preceding order? */
                                        this->selected_order -= (int)(from <= this->selected_order);
                                        /* Moving to   preceding order? */
                                        this->selected_order += (int)(to   <= this->selected_order);
                                        break;
                                }

                                /* Now we are modifying the selected order */
                                if (to == INVALID_VEH_ORDER_ID) {
                                        /* Deleting selected order */
                                        this->DeleteChildWindows();
                                        HideDropDownMenu(this);
                                        this->selected_order = -1;
                                        break;
                                }

                                /* Moving selected order */
                                this->selected_order = to;
                                break;
                }

                this->vscroll->SetCount(this->vehicle->GetNumOrders() + 1);
                if (gui_scope) this->UpdateButtonState();

                /* Scroll to the new order. */
                if (from == INVALID_VEH_ORDER_ID && to != INVALID_VEH_ORDER_ID && !this->vscroll->IsVisible(to)) {
                        this->vscroll->ScrollTowards(to);
                }
        }

        void UpdateButtonState()
        {
                if (this->vehicle->owner != _local_company) return; // No buttons are displayed with competitor order windows.

                bool shared_orders = this->vehicle->IsOrderListShared();
                VehicleOrderID sel = this->OrderGetSel();
                const Order *order = this->vehicle->GetOrder(sel);

                /* Second row. */
                /* skip */
                this->SetWidgetDisabledState(WID_O_SKIP, this->vehicle->GetNumOrders() <= 1);

                /* delete / stop sharing */
                NWidgetStacked *delete_sel = this->GetWidget<NWidgetStacked>(WID_O_SEL_BOTTOM_MIDDLE);
                if (shared_orders && this->selected_order == this->vehicle->GetNumOrders()) {
                        /* The 'End of Shared Orders' order is selected, show the 'stop sharing' button. */
                        delete_sel->SetDisplayedPlane(DP_BOTTOM_MIDDLE_STOP_SHARING);
                } else {
                        /* The 'End of Shared Orders' order isn't selected, show the 'delete' button. */
                        delete_sel->SetDisplayedPlane(DP_BOTTOM_MIDDLE_DELETE);
                        this->SetWidgetDisabledState(WID_O_DELETE,
                                (uint)this->vehicle->GetNumOrders() + ((shared_orders || this->vehicle->GetNumOrders() != 0) ? 1 : 0) <= (uint)this->selected_order);

                        /* Set the tooltip of the 'delete' button depending on whether the
                         * 'End of Orders' order or a regular order is selected. */
                        NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_O_DELETE);
                        if (this->selected_order == this->vehicle->GetNumOrders()) {
                                nwi->SetDataTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_ALL_TOOLTIP);
                        } else {
                                nwi->SetDataTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_TOOLTIP);
                        }
                }

                /* First row. */
                this->RaiseWidget(WID_O_FULL_LOAD);
                this->RaiseWidget(WID_O_UNLOAD);
                this->RaiseWidget(WID_O_SERVICE);

                /* Selection widgets. */
                /* Train or road vehicle. */
                NWidgetStacked *train_row_sel = this->GetWidget<NWidgetStacked>(WID_O_SEL_TOP_ROW_GROUNDVEHICLE);
                NWidgetStacked *left_sel      = this->GetWidget<NWidgetStacked>(WID_O_SEL_TOP_LEFT);
                NWidgetStacked *middle_sel    = this->GetWidget<NWidgetStacked>(WID_O_SEL_TOP_MIDDLE);
                NWidgetStacked *right_sel     = this->GetWidget<NWidgetStacked>(WID_O_SEL_TOP_RIGHT);
                /* Ship or airplane. */
                NWidgetStacked *row_sel = this->GetWidget<NWidgetStacked>(WID_O_SEL_TOP_ROW);
                assert(row_sel != NULL || (train_row_sel != NULL && left_sel != NULL && middle_sel != NULL && right_sel != NULL));

                OrderType order_type;
                if (order == NULL) {
                        order_type = OT_NOTHING;
                } else {
                        this->SetWidgetDisabledState(WID_O_FULL_LOAD, (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) != 0); // full load
                        this->SetWidgetDisabledState(WID_O_UNLOAD,    (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) != 0); // unload
                        order_type = order->GetType();
                }

                switch (order_type) {
                        case OT_GOTO_STATION:
                                if (row_sel != NULL) {
                                        row_sel->SetDisplayedPlane(DP_ROW_LOAD);
                                } else {
                                        train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_NORMAL);
                                        left_sel->SetDisplayedPlane(DP_LEFT_LOAD);
                                        middle_sel->SetDisplayedPlane(DP_MIDDLE_UNLOAD);
                                        right_sel->SetDisplayedPlane(DP_RIGHT_REFIT_AUTO);
                                        this->EnableWidget(WID_O_NON_STOP);
                                        this->SetWidgetLoweredState(WID_O_NON_STOP, order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
                                }
                                this->SetWidgetLoweredState(WID_O_FULL_LOAD, order->GetLoadType() == OLF_FULL_LOAD_ANY);
                                this->SetWidgetLoweredState(WID_O_UNLOAD, order->GetUnloadType() == OUFB_UNLOAD);

                                /* Can only do refitting when stopping at the destination and loading cargo.
                                 * Also enable the button if a refit is already set to allow clearing it. */
                                this->SetWidgetDisabledState(WID_O_REFIT_DROPDOWN,
                                                order->GetLoadType() == OLFB_NO_LOAD || (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) ||
                                                ((!this->can_do_refit || !this->can_do_autorefit) && !order->IsRefit()));

                                break;

                        case OT_GOTO_WAYPOINT:
                                if (row_sel != NULL) {
                                        row_sel->SetDisplayedPlane(DP_ROW_LOAD);
                                } else {
                                        train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_NORMAL);
                                        left_sel->SetDisplayedPlane(DP_LEFT_LOAD);
                                        middle_sel->SetDisplayedPlane(DP_MIDDLE_UNLOAD);
                                        right_sel->SetDisplayedPlane(DP_RIGHT_REFIT);
                                        this->EnableWidget(WID_O_NON_STOP);
                                        this->SetWidgetLoweredState(WID_O_NON_STOP, order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
                                }
                                this->DisableWidget(WID_O_FULL_LOAD);
                                this->DisableWidget(WID_O_UNLOAD);
                                /* Ground vehicles use one and aircraft and
                                 * ships use the other, so disable both. */
                                this->DisableWidget(WID_O_REFIT);
                                this->DisableWidget(WID_O_REFIT_DROPDOWN);
                                break;

                        case OT_GOTO_DEPOT:
                                if (row_sel != NULL) {
                                        row_sel->SetDisplayedPlane(DP_ROW_DEPOT);
                                } else {
                                        train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_NORMAL);
                                        left_sel->SetDisplayedPlane(DP_LEFT_SERVICE);
                                        middle_sel->SetDisplayedPlane(DP_MIDDLE_EMPTY);
                                        right_sel->SetDisplayedPlane(DP_RIGHT_REFIT);
                                        this->EnableWidget(WID_O_NON_STOP);
                                        this->SetWidgetLoweredState(WID_O_NON_STOP, order->GetNonStopType() & ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS);
                                }
                                /* Disable refit button if the order is no 'always go' order.
                                 * However, keep the service button enabled for refit-orders to allow clearing refits (without knowing about ctrl). */
                                this->SetWidgetDisabledState(WID_O_REFIT,
                                                (order->GetDepotOrderType() & ODTFB_SERVICE) || (order->GetDepotActionType() & ODATFB_HALT) ||
                                                (!this->can_do_refit && !order->IsRefit()));
                                this->SetWidgetLoweredState(WID_O_SERVICE, order->GetDepotOrderType() & ODTFB_SERVICE);
                                break;

                        case OT_CONDITIONAL: {
                                if (row_sel != NULL) {
                                        row_sel->SetDisplayedPlane(DP_ROW_CONDITIONAL);
                                } else {
                                        train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_CONDITIONAL);
                                }
                                OrderConditionVariable ocv = order->GetConditionVariable();
                                /* Set the strings for the dropdown boxes. */
                                this->GetWidget<NWidgetCore>(WID_O_COND_VARIABLE)->widget_data   = STR_ORDER_CONDITIONAL_LOAD_PERCENTAGE + ocv;
                                this->GetWidget<NWidgetCore>(WID_O_COND_COMPARATOR)->widget_data = _order_conditional_condition[order->GetConditionComparator()];
                                this->SetWidgetDisabledState(WID_O_COND_COMPARATOR, ocv == OCV_UNCONDITIONALLY);
                                this->SetWidgetDisabledState(WID_O_COND_VALUE, ocv == OCV_REQUIRES_SERVICE || ocv == OCV_UNCONDITIONALLY);
                                break;
                        }

                        default: // every other order
                                if (row_sel != NULL) {
                                        row_sel->SetDisplayedPlane(DP_ROW_LOAD);
                                } else {
                                        train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_NORMAL);
                                        left_sel->SetDisplayedPlane(DP_LEFT_LOAD);
                                        middle_sel->SetDisplayedPlane(DP_MIDDLE_UNLOAD);
                                        right_sel->SetDisplayedPlane(DP_RIGHT_REFIT);
                                        this->DisableWidget(WID_O_NON_STOP);
                                        this->RaiseWidget(WID_O_NON_STOP);
                                }
                                this->DisableWidget(WID_O_FULL_LOAD);
                                this->DisableWidget(WID_O_UNLOAD);
                                /* Ground vehicles use one and aircraft and
                                 * ships use the other, so disable both. */
                                this->DisableWidget(WID_O_REFIT);
                                this->DisableWidget(WID_O_REFIT_DROPDOWN);
                                break;
                }

                /* Disable list of vehicles with the same shared orders if there is no list */
                this->SetWidgetDisabledState(WID_O_SHARED_ORDER_LIST, !shared_orders);

                this->SetDirty();
        }

        void OnPaint (BlitArea *dpi) OVERRIDE
        {
                if (this->vehicle->owner != _local_company) {
                        this->selected_order = -1; // Disable selection any selected row at a competitor order window.
                } else {
                        this->SetWidgetLoweredState(WID_O_GOTO, this->goto_type != OPOS_NONE);
                }
                this->DrawWidgets (dpi);
        }

        void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
        {
                if (widget != WID_O_ORDER_LIST) return;

                bool rtl = _current_text_dir == TD_RTL;
                SetDParamMaxValue(0, this->vehicle->GetNumOrders(), 2);
                int index_column_width = GetStringBoundingBox(STR_ORDER_INDEX).width + 2 * GetSpriteSize(rtl ? SPR_ARROW_RIGHT : SPR_ARROW_LEFT).width + 3;
                int middle = rtl ? r.right - WD_FRAMETEXT_RIGHT - index_column_width : r.left + WD_FRAMETEXT_LEFT + index_column_width;

                int y = r.top + WD_FRAMERECT_TOP;
                int line_height = this->GetWidget<NWidgetBase>(WID_O_ORDER_LIST)->resize_y;

                int i = this->vscroll->GetPosition();
                const Order *order = this->vehicle->GetOrder(i);
                /* First draw the highlighting underground if it exists. */
                if (this->order_over != INVALID_VEH_ORDER_ID) {
                        while (order != NULL) {
                                /* Don't draw anything if it extends past the end of the window. */
                                if (!this->vscroll->IsVisible(i)) break;

                                if (i != this->selected_order && i == this->order_over) {
                                        /* Highlight dragged order destination. */
                                        int top = (this->order_over < this->selected_order ? y : y + line_height) - WD_FRAMERECT_TOP;
                                        int bottom = min(top + 2, r.bottom - WD_FRAMERECT_BOTTOM);
                                        top = max(top - 3, r.top + WD_FRAMERECT_TOP);
                                        GfxFillRect (dpi, r.left + WD_FRAMETEXT_LEFT, top, r.right - WD_FRAMETEXT_RIGHT, bottom, _colour_gradient[COLOUR_GREY][7]);
                                        break;
                                }
                                y += line_height;

                                i++;
                                order = order->next;
                        }

                        /* Reset counters for drawing the orders. */
                        y = r.top + WD_FRAMERECT_TOP;
                        i = this->vscroll->GetPosition();
                        order = this->vehicle->GetOrder(i);
                }

                /* Draw the orders. */
                while (order != NULL) {
                        /* Don't draw anything if it extends past the end of the window. */
                        if (!this->vscroll->IsVisible(i)) break;

                        DrawOrderString (this->vehicle, order, i, dpi, y, i == this->selected_order, false, r.left + WD_FRAMETEXT_LEFT, middle, r.right - WD_FRAMETEXT_RIGHT);
                        y += line_height;

                        i++;
                        order = order->next;
                }

                if (this->vscroll->IsVisible(i)) {
                        StringID str = this->vehicle->IsOrderListShared() ? STR_ORDERS_END_OF_SHARED_ORDERS : STR_ORDERS_END_OF_ORDERS;
                        DrawString (dpi, rtl ? r.left + WD_FRAMETEXT_LEFT : middle, rtl ? middle : r.right - WD_FRAMETEXT_RIGHT, y, str, (i == this->selected_order) ? TC_WHITE : TC_BLACK);
                }
        }

        virtual void SetStringParameters(int widget) const
        {
                switch (widget) {
                        case WID_O_COND_VALUE: {
                                VehicleOrderID sel = this->OrderGetSel();
                                const Order *order = this->vehicle->GetOrder(sel);

                                if (order != NULL && order->IsType(OT_CONDITIONAL)) {
                                        uint value = order->GetConditionValue();
                                        if (order->GetConditionVariable() == OCV_MAX_SPEED) value = ConvertSpeedToDisplaySpeed(value);
                                        SetDParam(0, value);
                                }
                                break;
                        }

                        case WID_O_CAPTION:
                                SetDParam(0, this->vehicle->index);
                                break;
                }
        }

        virtual void OnClick(Point pt, int widget, int click_count)
        {
                switch (widget) {
                        case WID_O_ORDER_LIST: {
                                if (this->goto_type == OPOS_CONDITIONAL) {
                                        VehicleOrderID order_id = this->GetOrderFromPt(_cursor.pos.y - this->top);
                                        if (order_id != INVALID_VEH_ORDER_ID) {
                                                Order order;
                                                order.next = NULL;
                                                order.index = 0;
                                                order.MakeConditional(order_id);

                                                DoCommandP(this->vehicle->tile, this->vehicle->index + (this->OrderGetSel() << 20), order.Pack(), CMD_INSERT_ORDER);
                                        }
                                        ResetPointerMode();
                                        break;
                                }

                                VehicleOrderID sel = this->GetOrderFromPt(pt.y);

                                if (_ctrl_pressed && sel < this->vehicle->GetNumOrders()) {
                                        TileIndex xy = this->vehicle->GetOrder(sel)->GetLocation(this->vehicle);
                                        if (xy != INVALID_TILE) ScrollMainWindowToTile(xy);
                                        return;
                                }

                                /* This order won't be selected any more, close all child windows and dropdowns */
                                this->DeleteChildWindows();
                                HideDropDownMenu(this);

                                if (sel == INVALID_VEH_ORDER_ID || this->vehicle->owner != _local_company) {
                                        /* Deselect clicked order */
                                        this->selected_order = -1;
                                } else if (sel == this->selected_order) {
                                        if (this->vehicle->type == VEH_TRAIN && sel < this->vehicle->GetNumOrders()) {
                                                DoCommandP(this->vehicle->tile, this->vehicle->index + (sel << 20),
                                                                MOF_STOP_LOCATION | ((this->vehicle->GetOrder(sel)->GetStopLocation() + 1) % OSL_END) << 4,
                                                                CMD_MODIFY_ORDER);
                                        }
                                } else {
                                        /* Select clicked order */
                                        this->selected_order = sel;

                                        if (this->vehicle->owner == _local_company) {
                                                /* Activate drag and drop */
                                                SetPointerMode (POINTER_DRAG, this, SPR_CURSOR_MOUSE);
                                        }
                                }

                                this->UpdateButtonState();
                                break;
                        }

                        case WID_O_SKIP:
                                this->OrderClick_Skip();
                                break;

                        case WID_O_DELETE:
                                this->OrderClick_Delete();
                                break;

                        case WID_O_STOP_SHARING:
                                this->OrderClick_StopSharing();
                                break;

                        case WID_O_NON_STOP:
                                if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
                                        this->OrderClick_Nonstop(-1);
                                } else {
                                        const Order *o = this->vehicle->GetOrder(this->OrderGetSel());
                                        ShowDropDownMenu(this, _order_non_stop_drowdown, o->GetNonStopType(), WID_O_NON_STOP, 0,
                                                                                                        o->IsType(OT_GOTO_STATION) ? 0 : (o->IsType(OT_GOTO_WAYPOINT) ? 3 : 12));
                                }
                                break;

                        case WID_O_GOTO:
                                if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
                                        if (this->goto_type != OPOS_NONE) {
                                                ResetPointerMode();
                                        } else {
                                                this->OrderClick_Goto(OPOS_GOTO);
                                        }
                                } else {
                                        int sel;
                                        switch (this->goto_type) {
                                                case OPOS_NONE:        sel = -1; break;
                                                case OPOS_GOTO:        sel =  0; break;
                                                case OPOS_CONDITIONAL: sel =  2; break;
                                                case OPOS_SHARE:       sel =  3; break;
                                                default: NOT_REACHED();
                                        }
                                        ShowDropDownMenu(this, this->vehicle->type == VEH_AIRCRAFT ? _order_goto_dropdown_aircraft : _order_goto_dropdown, sel, WID_O_GOTO, 0, 0);
                                }
                                break;

                        case WID_O_FULL_LOAD:
                                if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
                                        this->OrderClick_FullLoad(-1);
                                } else {
                                        ShowDropDownMenu(this, _order_full_load_drowdown, this->vehicle->GetOrder(this->OrderGetSel())->GetLoadType(), WID_O_FULL_LOAD, 0, 2);
                                }
                                break;

                        case WID_O_UNLOAD:
                                if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
                                        this->OrderClick_Unload(-1);
                                } else {
                                        ShowDropDownMenu(this, _order_unload_drowdown, this->vehicle->GetOrder(this->OrderGetSel())->GetUnloadType(), WID_O_UNLOAD, 0, 8);
                                }
                                break;

                        case WID_O_REFIT:
                        case WID_O_REFIT_DROPDOWN:
                                if (_ctrl_pressed) {
                                        /* Cancel refitting */
                                        DoCommandP (this->vehicle->tile, this->vehicle->index | (this->OrderGetSel() << 24), 0, CMD_ORDER_REFIT);
                                } else {
                                        /* Auto-refit to available cargo type. */
                                        ShowVehicleRefitWindow (this, this->vehicle, this->OrderGetSel(), widget == WID_O_REFIT_DROPDOWN, this->vehicle->GetOrder(this->OrderGetSel())->GetRefitCargoMask());
                                }
                                break;

                        case WID_O_SERVICE:
                                if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
                                        this->OrderClick_Service(-1);
                                } else {
                                        ShowDropDownMenu(this, _order_depot_action_dropdown, DepotActionStringIndex(this->vehicle->GetOrder(this->OrderGetSel())), WID_O_SERVICE, 0, 0);
                                }
                                break;

                        case WID_O_TIMETABLE_VIEW:
                                ShowTimetableWindow(this->vehicle);
                                break;

                        case WID_O_COND_VARIABLE: {
                                DropDownList *list = new DropDownList();
                                for (uint i = 0; i < lengthof(_order_conditional_variable); i++) {
                                        *list->Append() = new DropDownListStringItem(STR_ORDER_CONDITIONAL_LOAD_PERCENTAGE + _order_conditional_variable[i], _order_conditional_variable[i], false);
                                }
                                ShowDropDownList(this, list, this->vehicle->GetOrder(this->OrderGetSel())->GetConditionVariable(), WID_O_COND_VARIABLE);
                                break;
                        }

                        case WID_O_COND_COMPARATOR: {
                                const Order *o = this->vehicle->GetOrder(this->OrderGetSel());
                                ShowDropDownMenu(this, _order_conditional_condition, o->GetConditionComparator(), WID_O_COND_COMPARATOR, 0, (o->GetConditionVariable() == OCV_REQUIRES_SERVICE) ? 0x3F : 0xC0);
                                break;
                        }

                        case WID_O_COND_VALUE: {
                                const Order *order = this->vehicle->GetOrder(this->OrderGetSel());
                                uint value = order->GetConditionValue();
                                if (order->GetConditionVariable() == OCV_MAX_SPEED) value = ConvertSpeedToDisplaySpeed(value);
                                SetDParam(0, value);
                                ShowQueryString(STR_JUST_INT, STR_ORDER_CONDITIONAL_VALUE_CAPT, 5, this, CS_NUMERAL, QSF_NONE);
                                break;
                        }

                        case WID_O_SHARED_ORDER_LIST:
                                ShowVehicleListWindow(this->vehicle);
                                break;
                }
        }

        virtual void OnQueryTextFinished(char *str)
        {
                if (!StrEmpty(str)) {
                        VehicleOrderID sel = this->OrderGetSel();
                        uint value = atoi(str);

                        switch (this->vehicle->GetOrder(sel)->GetConditionVariable()) {
                                case OCV_MAX_SPEED:
                                        value = ConvertDisplaySpeedToSpeed(value);
                                        break;

                                case OCV_RELIABILITY:
                                case OCV_LOAD_PERCENTAGE:
                                        value = Clamp(value, 0, 100);
                                        break;

                                default:
                                        break;
                        }
                        DoCommandP(this->vehicle->tile, this->vehicle->index + (sel << 20), MOF_COND_VALUE | Clamp(value, 0, 2047) << 4, CMD_MODIFY_ORDER);
                }
        }

        virtual void OnDropdownSelect(int widget, int index)
        {
                switch (widget) {
                        case WID_O_NON_STOP:
                                this->OrderClick_Nonstop(index);
                                break;

                        case WID_O_FULL_LOAD:
                                this->OrderClick_FullLoad(index);
                                break;

                        case WID_O_UNLOAD:
                                this->OrderClick_Unload(index);
                                break;

                        case WID_O_GOTO:
                                switch (index) {
                                        case 0: this->OrderClick_Goto(OPOS_GOTO); break;
                                        case 1: this->OrderClick_NearestDepot(); break;
                                        case 2: this->OrderClick_Goto(OPOS_CONDITIONAL); break;
                                        case 3: this->OrderClick_Goto(OPOS_SHARE); break;
                                        default: NOT_REACHED();
                                }
                                break;

                        case WID_O_SERVICE:
                                this->OrderClick_Service(index);
                                break;

                        case WID_O_COND_VARIABLE:
                                DoCommandP(this->vehicle->tile, this->vehicle->index + (this->OrderGetSel() << 20), MOF_COND_VARIABLE | index << 4,  CMD_MODIFY_ORDER);
                                break;

                        case WID_O_COND_COMPARATOR:
                                DoCommandP(this->vehicle->tile, this->vehicle->index + (this->OrderGetSel() << 20), MOF_COND_COMPARATOR | index << 4,  CMD_MODIFY_ORDER);
                                break;
                }
        }

        virtual void OnDragDrop(Point pt, int widget)
        {
                switch (widget) {
                        case WID_O_ORDER_LIST: {
                                VehicleOrderID from_order = this->OrderGetSel();
                                VehicleOrderID to_order = this->GetOrderFromPt(pt.y);

                                if (!(from_order == to_order || from_order == INVALID_VEH_ORDER_ID || from_order > this->vehicle->GetNumOrders() || to_order == INVALID_VEH_ORDER_ID || to_order > this->vehicle->GetNumOrders()) &&
                                                DoCommandP(this->vehicle->tile, this->vehicle->index, from_order | (to_order << 16), CMD_MOVE_ORDER)) {
                                        this->selected_order = -1;
                                        this->UpdateButtonState();
                                }
                                break;
                        }

                        case WID_O_DELETE:
                                this->OrderClick_Delete();
                                break;

                        case WID_O_STOP_SHARING:
                                this->OrderClick_StopSharing();
                                break;
                }

                ResetPointerMode();

                if (this->order_over != INVALID_VEH_ORDER_ID) {
                        /* End of drag-and-drop, hide dragged order destination highlight. */
                        this->order_over = INVALID_VEH_ORDER_ID;
                        this->SetWidgetDirty(WID_O_ORDER_LIST);
                }
        }

        virtual EventState OnHotkey(int hotkey)
        {
                if (this->vehicle->owner != _local_company) return ES_NOT_HANDLED;

                switch (hotkey) {
                        case OHK_SKIP:           this->OrderClick_Skip();          break;
                        case OHK_DELETE:         this->OrderClick_Delete();        break;
                        case OHK_GOTO:           this->OrderClick_Goto(OPOS_GOTO); break;
                        case OHK_NONSTOP:        this->OrderClick_Nonstop(-1);     break;
                        case OHK_FULLLOAD:       this->OrderClick_FullLoad(-1);    break;
                        case OHK_UNLOAD:         this->OrderClick_Unload(-1);      break;
                        case OHK_NEAREST_DEPOT:  this->OrderClick_NearestDepot();  break;
                        case OHK_ALWAYS_SERVICE: this->OrderClick_Service(-1);     break;
                        case OHK_TRANSFER:       this->OrderHotkey_Transfer();     break;
                        case OHK_NO_UNLOAD:      this->OrderHotkey_NoUnload();     break;
                        case OHK_NO_LOAD:        this->OrderHotkey_NoLoad();       break;
                        default: return ES_NOT_HANDLED;
                }
                return ES_HANDLED;
        }

        virtual void OnPlaceObject(Point pt, TileIndex tile)
        {
                if (this->goto_type == OPOS_GOTO) {
                        const BaseOrder cmd = GetOrderCmdFromTile (this->vehicle, tile);
                        if (cmd.IsType(OT_NOTHING)) return;

                        if (DoCommandP(this->vehicle->tile, this->vehicle->index + (this->OrderGetSel() << 20), cmd.Pack(), CMD_INSERT_ORDER)) {
                                /* With quick goto the Go To button stays active */
                                if (!_settings_client.gui.quick_goto) ResetPointerMode();
                        }
                }
        }

        virtual bool OnVehicleSelect(const Vehicle *v)
        {
                /* v is vehicle getting orders. Only copy/clone orders if vehicle doesn't have any orders yet.
                 * We disallow copying orders of other vehicles if we already have at least one order entry
                 * ourself as it easily copies orders of vehicles within a station when we mean the station.
                 * Obviously if you press CTRL on a non-empty orders vehicle you know what you are doing
                 * TODO: give a warning message */
                bool share_order = _ctrl_pressed || this->goto_type == OPOS_SHARE;
                if (this->vehicle->GetNumOrders() != 0 && !share_order) return false;

                if (DoCommandP(this->vehicle->tile, this->vehicle->index | (share_order ? CO_SHARE : CO_COPY) << 30, v->index, CMD_CLONE_ORDER)) {
                        this->selected_order = -1;
                        ResetPointerMode();
                }
                return true;
        }

        virtual void OnPlaceObjectAbort()
        {
                this->goto_type = OPOS_NONE;
                this->SetWidgetDirty(WID_O_GOTO);

                /* Remove drag highlighting if it exists. */
                if (this->order_over != INVALID_VEH_ORDER_ID) {
                        this->order_over = INVALID_VEH_ORDER_ID;
                        this->SetWidgetDirty(WID_O_ORDER_LIST);
                }
        }

        virtual void OnMouseDrag(Point pt, int widget)
        {
                if (this->selected_order != -1 && widget == WID_O_ORDER_LIST) {
                        /* An order is dragged.. */
                        VehicleOrderID from_order = this->OrderGetSel();
                        VehicleOrderID to_order = this->GetOrderFromPt(pt.y);
                        uint num_orders = this->vehicle->GetNumOrders();

                        if (from_order != INVALID_VEH_ORDER_ID && from_order <= num_orders) {
                                if (to_order != INVALID_VEH_ORDER_ID && to_order <= num_orders) { // ..over an existing order.
                                        this->order_over = to_order;
                                        this->SetWidgetDirty(widget);
                                } else if (from_order != to_order && this->order_over != INVALID_VEH_ORDER_ID) { // ..outside of the order list.
                                        this->order_over = INVALID_VEH_ORDER_ID;
                                        this->SetWidgetDirty(widget);
                                }
                        }
                }
        }

        virtual void OnResize()
        {
                /* Update the scroll bar */
                this->vscroll->SetCapacityFromWidget(this, WID_O_ORDER_LIST);
        }

        static HotkeyList hotkeys;
};

static const Hotkey order_hotkeys[] = {
        Hotkey ("skip",           OHK_SKIP,       'D'),
        Hotkey ("delete",         OHK_DELETE,     'F'),
        Hotkey ("goto",           OHK_GOTO,       'G'),
        Hotkey ("nonstop",        OHK_NONSTOP,    'H'),
        Hotkey ("fullload",       OHK_FULLLOAD,   'J'),
        Hotkey ("unload",         OHK_UNLOAD,     'K'),
        Hotkey ("nearest_depot",  OHK_NEAREST_DEPOT),
        Hotkey ("always_service", OHK_ALWAYS_SERVICE),
        Hotkey ("transfer",       OHK_TRANSFER),
        Hotkey ("no_unload",      OHK_NO_UNLOAD),
        Hotkey ("no_load",        OHK_NO_LOAD),
};
HotkeyList OrdersWindow::hotkeys("order", order_hotkeys);

/** Nested widget definition for "your" train orders. */
static const NWidgetPart _nested_orders_train_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_GREY),
                NWidget(WWT_CAPTION, COLOUR_GREY, WID_O_CAPTION), SetDataTip(STR_ORDERS_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_TIMETABLE_VIEW), SetMinimalSize(61, 14), SetDataTip(STR_ORDERS_TIMETABLE_VIEW, STR_ORDERS_TIMETABLE_VIEW_TOOLTIP),
                NWidget(WWT_SHADEBOX, COLOUR_GREY),
                NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
                NWidget(WWT_STICKYBOX, COLOUR_GREY),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PANEL, COLOUR_GREY, WID_O_ORDER_LIST), SetMinimalSize(372, 62), SetDataTip(0x0, STR_ORDERS_LIST_TOOLTIP), SetResize(1, 1), SetScrollbar(WID_O_SCROLLBAR), EndContainer(),
                NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_O_SCROLLBAR),
        EndContainer(),

        /* First button row. */
        NWidget(NWID_HORIZONTAL),
                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_ROW_GROUNDVEHICLE),
                        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                                NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_NON_STOP), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_NON_STOP, STR_ORDER_TOOLTIP_NON_STOP), SetResize(1, 0),
                                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_LEFT),
                                        NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_FULL_LOAD), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_TOGGLE_FULL_LOAD, STR_ORDER_TOOLTIP_FULL_LOAD), SetResize(1, 0),
                                        NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_SERVICE), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_SERVICE, STR_ORDER_SERVICE_TOOLTIP), SetResize(1, 0),
                                EndContainer(),
                                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_MIDDLE),
                                        NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_UNLOAD), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_TOGGLE_UNLOAD, STR_ORDER_TOOLTIP_UNLOAD), SetResize(1, 0),
                                        NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_O_EMPTY), SetMinimalSize(93, 12), SetFill(1, 0), SetResize(1, 0),
                                EndContainer(),
                                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_RIGHT),
                                        NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_REFIT), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_REFIT, STR_ORDER_REFIT_TOOLTIP), SetResize(1, 0),
                                        NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_REFIT_DROPDOWN), SetMinimalSize(93, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_ORDER_REFIT_AUTO, STR_ORDER_REFIT_AUTO_TOOLTIP), SetResize(1, 0),
                                EndContainer(),
                        EndContainer(),
                        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                                NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_O_COND_VARIABLE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_NULL, STR_ORDER_CONDITIONAL_VARIABLE_TOOLTIP), SetResize(1, 0),
                                NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_O_COND_COMPARATOR), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_NULL, STR_ORDER_CONDITIONAL_COMPARATOR_TOOLTIP), SetResize(1, 0),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_COND_VALUE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                                        SetDataTip(STR_BLACK_COMMA, STR_ORDER_CONDITIONAL_VALUE_TOOLTIP), SetResize(1, 0),
                        EndContainer(),
                EndContainer(),
                NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_O_SHARED_ORDER_LIST), SetMinimalSize(12, 12), SetDataTip(SPR_SHARED_ORDERS_ICON, STR_ORDERS_VEH_WITH_SHARED_ORDERS_LIST_TOOLTIP),
        EndContainer(),

        /* Second button row. */
        NWidget(NWID_HORIZONTAL),
                NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                        NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_SKIP), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDERS_SKIP_BUTTON, STR_ORDERS_SKIP_TOOLTIP), SetResize(1, 0),
                        NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_BOTTOM_MIDDLE),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_DELETE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                                SetDataTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_TOOLTIP), SetResize(1, 0),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_STOP_SHARING), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                                SetDataTip(STR_ORDERS_STOP_SHARING_BUTTON, STR_ORDERS_STOP_SHARING_TOOLTIP), SetResize(1, 0),
                        EndContainer(),
                        NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_GOTO), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDERS_GO_TO_BUTTON, STR_ORDERS_GO_TO_TOOLTIP), SetResize(1, 0),
                EndContainer(),
                NWidget(WWT_RESIZEBOX, COLOUR_GREY),
        EndContainer(),
};

static WindowDesc::Prefs _orders_train_prefs ("view_vehicle_orders_train");

static const WindowDesc _orders_train_desc(
        WDP_AUTO, 384, 100,
        WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
        WDF_CONSTRUCTION,
        _nested_orders_train_widgets, lengthof(_nested_orders_train_widgets),
        &_orders_train_prefs, &OrdersWindow::hotkeys
);

/** Nested widget definition for "your" orders (non-train). */
static const NWidgetPart _nested_orders_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_GREY),
                NWidget(WWT_CAPTION, COLOUR_GREY, WID_O_CAPTION), SetDataTip(STR_ORDERS_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_TIMETABLE_VIEW), SetMinimalSize(61, 14), SetDataTip(STR_ORDERS_TIMETABLE_VIEW, STR_ORDERS_TIMETABLE_VIEW_TOOLTIP),
                NWidget(WWT_SHADEBOX, COLOUR_GREY),
                NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
                NWidget(WWT_STICKYBOX, COLOUR_GREY),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PANEL, COLOUR_GREY, WID_O_ORDER_LIST), SetMinimalSize(372, 62), SetDataTip(0x0, STR_ORDERS_LIST_TOOLTIP), SetResize(1, 1), SetScrollbar(WID_O_SCROLLBAR), EndContainer(),
                NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_O_SCROLLBAR),
        EndContainer(),

        /* First button row. */
        NWidget(NWID_HORIZONTAL),
                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_ROW),
                        /* Load + unload + refit buttons. */
                        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                                NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_FULL_LOAD), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDER_TOGGLE_FULL_LOAD, STR_ORDER_TOOLTIP_FULL_LOAD), SetResize(1, 0),
                                NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_UNLOAD), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDER_TOGGLE_UNLOAD, STR_ORDER_TOOLTIP_UNLOAD), SetResize(1, 0),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_REFIT_DROPDOWN), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDER_REFIT_AUTO, STR_ORDER_REFIT_AUTO_TOOLTIP), SetResize(1, 0),
                        EndContainer(),
                        /* Refit + service buttons. */
                        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_REFIT), SetMinimalSize(186, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDER_REFIT, STR_ORDER_REFIT_TOOLTIP), SetResize(1, 0),
                                NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_SERVICE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDER_SERVICE, STR_ORDER_SERVICE_TOOLTIP), SetResize(1, 0),
                        EndContainer(),

                        /* Buttons for setting a condition. */
                        NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
                                NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_O_COND_VARIABLE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_NULL, STR_ORDER_CONDITIONAL_VARIABLE_TOOLTIP), SetResize(1, 0),
                                NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_O_COND_COMPARATOR), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_NULL, STR_ORDER_CONDITIONAL_COMPARATOR_TOOLTIP), SetResize(1, 0),
                                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_COND_VALUE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_BLACK_COMMA, STR_ORDER_CONDITIONAL_VALUE_TOOLTIP), SetResize(1, 0),
                        EndContainer(),
                EndContainer(),

                NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_O_SHARED_ORDER_LIST), SetMinimalSize(12, 12), SetDataTip(SPR_SHARED_ORDERS_ICON, STR_ORDERS_VEH_WITH_SHARED_ORDERS_LIST_TOOLTIP),
        EndContainer(),

        /* Second button row. */
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_SKIP), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                        SetDataTip(STR_ORDERS_SKIP_BUTTON, STR_ORDERS_SKIP_TOOLTIP), SetResize(1, 0),
                NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_BOTTOM_MIDDLE),
                        NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_DELETE), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDERS_DELETE_BUTTON, STR_ORDERS_DELETE_TOOLTIP), SetResize(1, 0),
                        NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_STOP_SHARING), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                                        SetDataTip(STR_ORDERS_STOP_SHARING_BUTTON, STR_ORDERS_STOP_SHARING_TOOLTIP), SetResize(1, 0),
                EndContainer(),
                NWidget(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_GOTO), SetMinimalSize(124, 12), SetFill(1, 0),
                                                                                        SetDataTip(STR_ORDERS_GO_TO_BUTTON, STR_ORDERS_GO_TO_TOOLTIP), SetResize(1, 0),
                NWidget(WWT_RESIZEBOX, COLOUR_GREY),
        EndContainer(),
};

static WindowDesc::Prefs _orders_prefs ("view_vehicle_orders");

static const WindowDesc _orders_desc(
        WDP_AUTO, 384, 100,
        WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
        WDF_CONSTRUCTION,
        _nested_orders_widgets, lengthof(_nested_orders_widgets),
        &_orders_prefs, &OrdersWindow::hotkeys
);

/** Nested widget definition for competitor orders. */
static const NWidgetPart _nested_other_orders_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_GREY),
                NWidget(WWT_CAPTION, COLOUR_GREY, WID_O_CAPTION), SetDataTip(STR_ORDERS_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_TIMETABLE_VIEW), SetMinimalSize(61, 14), SetDataTip(STR_ORDERS_TIMETABLE_VIEW, STR_ORDERS_TIMETABLE_VIEW_TOOLTIP),
                NWidget(WWT_SHADEBOX, COLOUR_GREY),
                NWidget(WWT_DEFSIZEBOX, COLOUR_GREY),
                NWidget(WWT_STICKYBOX, COLOUR_GREY),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PANEL, COLOUR_GREY, WID_O_ORDER_LIST), SetMinimalSize(372, 72), SetDataTip(0x0, STR_ORDERS_LIST_TOOLTIP), SetResize(1, 1), SetScrollbar(WID_O_SCROLLBAR), EndContainer(),
                NWidget(NWID_VERTICAL),
                        NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_O_SCROLLBAR),
                        NWidget(WWT_RESIZEBOX, COLOUR_GREY),
                EndContainer(),
        EndContainer(),
};

static WindowDesc::Prefs _other_orders_prefs ("view_vehicle_orders_competitor");

static const WindowDesc _other_orders_desc(
        WDP_AUTO, 384, 86,
        WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
        WDF_CONSTRUCTION,
        _nested_other_orders_widgets, lengthof(_nested_other_orders_widgets),
        &_other_orders_prefs, &OrdersWindow::hotkeys
);

void ShowOrdersWindow(const Vehicle *v)
{
        DeleteWindowById(WC_VEHICLE_DETAILS, v->index, false);
        DeleteWindowById(WC_VEHICLE_TIMETABLE, v->index, false);
        if (BringWindowToFrontById(WC_VEHICLE_ORDERS, v->index) != NULL) return;

        /* Using a different WindowDescs for _local_company causes problems.
         * Due to this we have to close order windows in ChangeWindowOwner/DeleteCompanyWindows,
         * because we cannot change switch the WindowDescs and keeping the old WindowDesc results
         * in crashed due to missing widges.
         * TODO Rewrite the order GUI to not use different WindowDescs.
         */
        if (v->owner != _local_company) {
                new OrdersWindow(&_other_orders_desc, v);
        } else {
                new OrdersWindow(v->IsGroundVehicle() ? &_orders_train_desc : &_orders_desc, v);
        }
}