order_gui.cpp

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/*
 * 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/>.
 */
 
#include "stdafx.h"
#include "command_func.h"
#include "viewport_func.h"
#include "depot_map.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_func.h"
#include "tilehighlight_func.h"
#include "network/network.h"
#include "station_base.h"
#include "industry.h"
#include "waypoint_base.h"
#include "core/geometry_func.hpp"
#include "hotkeys.h"
#include "aircraft.h"
#include "engine_func.h"
#include "vehicle_func.h"
#include "vehiclelist.h"
#include "vehicle_func.h"
#include "error.h"
#include "order_cmd.h"
#include "company_cmd.h"
 
#include "widgets/order_widget.h"
 
#include "safeguards.h"
 
 
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
};
 
static const OrderConditionVariable _order_conditional_variable[] = {
  OCV_LOAD_PERCENTAGE,
  OCV_RELIABILITY,
  OCV_MAX_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, VehicleType type);
extern uint ConvertDisplaySpeedToSpeed(uint speed, VehicleType type);
 
static const StringID _order_depot_action_dropdown[] = {
  STR_ORDER_DROP_GO_ALWAYS_DEPOT,
  STR_ORDER_DROP_SERVICE_DEPOT,
  STR_ORDER_DROP_HALT_DEPOT,
  STR_ORDER_DROP_UNBUNCH,
  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 if (order->GetDepotActionType() & ODATFB_UNBUNCH) {
    return DA_UNBUNCH;
  } else {
    return DA_ALWAYS_GO;
  }
}
 
static const StringID _order_refit_action_dropdown[] = {
  STR_ORDER_DROP_REFIT_AUTO,
  STR_ORDER_DROP_REFIT_AUTO_ANY,
  INVALID_STRING_ID
};
 
void DrawOrderString(const Vehicle *v, const Order *order, int order_index, 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) {
    /* Draw two arrows before the next real order. */
    DrawSprite(sprite, PAL_NONE, rtl ? right -     sprite_size.width : left,                     y + ((int)GetCharacterHeight(FS_NORMAL) - (int)sprite_size.height) / 2);
    DrawSprite(sprite, PAL_NONE, rtl ? right - 2 * sprite_size.width : left + sprite_size.width, y + ((int)GetCharacterHeight(FS_NORMAL) - (int)sprite_size.height) / 2);
  } else if (v->cur_implicit_order_index == order_index) {
    /* Draw one arrow before the next implicit order; the next real order will still get two arrows. */
    DrawSprite(sprite, PAL_NONE, rtl ? right -     sprite_size.width : left,                     y + ((int)GetCharacterHeight(FS_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(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);
  SetDParam(9, STR_EMPTY);
 
  /* Check range for aircraft. */
  if (v->type == VEH_AIRCRAFT && Aircraft::From(v)->GetRange() > 0 && order->IsGotoOrder()) {
    const Order *next = order->next != nullptr ? order->next : v->GetFirstOrder();
    if (GetOrderDistance(order, next, v) > Aircraft::From(v)->acache.cached_max_range_sqr) SetDParam(9, 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();
      bool valid_station = CanVehicleUseStation(v, Station::Get(order->GetDestination()));
 
      SetDParam(0, valid_station ? STR_ORDER_GO_TO_STATION : STR_ORDER_GO_TO_STATION_CAN_T_USE_STATION);
      SetDParam(1, STR_ORDER_GO_TO + (v->IsGroundVehicle() ? order->GetNonStopType() : 0));
      SetDParam(2, order->GetDestination());
 
      if (timetable) {
        /* Show only wait time in the timetable window. */
        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 {
        /* Show non-stop, refit and stop location only in the order window. */
        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) {
          /* Only show the stopping location if other than the default chosen by the player. */
          if (order->GetStopLocation() != (OrderStopLocation)(_settings_client.gui.stop_location)) {
            SetDParam(5, order->GetStopLocation() + STR_ORDER_STOP_LOCATION_NEAR_END);
          } else {
            SetDParam(5, STR_EMPTY);
          }
        }
      }
      break;
    }
 
    case OT_GOTO_DEPOT:
      if (order->GetDepotActionType() & ODATFB_NEAREST_DEPOT) {
        /* Going to the 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 {
        /* Going to a specific depot. */
        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);
      }
 
      /* Do not show stopping in the depot in the timetable window. */
      if (!timetable && (order->GetDepotActionType() & ODATFB_HALT)) {
        SetDParam(5, STR_ORDER_STOP_ORDER);
      }
 
      /* Do not show refitting in the depot in the timetable window. */
      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);
      }
 
      /* Do not show unbunching in the depot in the timetable window. */
      if (!timetable && (order->GetDepotActionType() & ODATFB_UNBUNCH)) {
        SetDParam(8, STR_ORDER_WAIT_TO_UNBUNCH);
      }
 
      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, v->type);
        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(rtl ? left : middle, rtl ? middle : right, y, STR_ORDER_TEXT, colour);
}
 
static Order GetOrderCmdFromTile(const Vehicle *v, TileIndex tile)
{
  /* Hack-ish; unpack order 0, so everything gets initialised with either zero
   * or a suitable default value for the variable. Then also override the index
   * as it is not coming from a pool, so would be initialised. */
  Order order(0);
  order.index = 0;
 
  /* check depot first */
  if (IsDepotTypeTile(tile, (TransportType)(uint)v->type) && IsTileOwner(tile, _local_company)) {
    order.MakeGoToDepot(v->type == VEH_AIRCRAFT ? GetStationIndex(tile) : GetDepotIndex(tile),
        ODTFB_PART_OF_ORDERS,
        (_settings_client.gui.new_nonstop && v->IsGroundVehicle()) ? ONSF_NO_STOP_AT_INTERMEDIATE_STATIONS : ONSF_STOP_EVERYWHERE);
 
    if (_ctrl_pressed) {
      /* Don't allow a new unbunching order if we already have one. */
      if (v->HasUnbunchingOrder()) {
        ShowErrorMessage(STR_ERROR_CAN_T_INSERT_NEW_ORDER, STR_ERROR_UNBUNCHING_ONLY_ONE_ALLOWED, WL_ERROR);
        /* Return an empty order to bail out. */
        order.Free();
        return order;
      } else {
        order.SetDepotActionType(ODATFB_UNBUNCH);
      }
    }
    return order;
  }
 
  /* check rail waypoint */
  if (IsRailWaypointTile(tile) &&
      v->type == VEH_TRAIN &&
      IsTileOwner(tile, _local_company)) {
    order.MakeGoToWaypoint(GetStationIndex(tile));
    if (_settings_client.gui.new_nonstop != _ctrl_pressed) order.SetNonStopType(ONSF_NO_STOP_AT_ANY_STATION);
    return order;
  }
 
  /* check buoy (no ownership) */
  if (IsBuoyTile(tile) && v->type == VEH_SHIP) {
    order.MakeGoToWaypoint(GetStationIndex(tile));
    return order;
  }
 
  /* check for station or industry with neutral station */
  if (IsTileType(tile, MP_STATION) || IsTileType(tile, MP_INDUSTRY)) {
    const Station *st = nullptr;
 
    if (IsTileType(tile, MP_STATION)) {
      st = Station::GetByTile(tile);
    } else {
      const Industry *in = Industry::GetByTile(tile);
      st = in->neutral_station;
    }
    if (st != nullptr && (st->owner == _local_company || st->owner == OWNER_NONE)) {
      byte facil;
      switch (v->type) {
        case VEH_SHIP:     facil = FACIL_DOCK;    break;
        case VEH_TRAIN:    facil = FACIL_TRAIN;   break;
        case VEH_AIRCRAFT: facil = FACIL_AIRPORT; break;
        case VEH_ROAD:     facil = FACIL_BUS_STOP | FACIL_TRUCK_STOP; break;
        default: NOT_REACHED();
      }
      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;
      }
    }
  }
 
  /* not found */
  order.Free();
  return order;
}
 
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,
};
 
struct OrdersWindow : public Window {
private:
  enum OrderPlaceObjectState {
    OPOS_NONE,
    OPOS_GOTO,
    OPOS_CONDITIONAL,
    OPOS_SHARE,
    OPOS_END,
  };
 
  enum DisplayPane {
    /* WID_O_SEL_TOP_ROW_GROUNDVEHICLE */
    DP_GROUNDVEHICLE_ROW_NORMAL      = 0, 
    DP_GROUNDVEHICLE_ROW_CONDITIONAL = 1, 
 
    /* WID_O_SEL_TOP_LEFT */
    DP_LEFT_LOAD       = 0, 
    DP_LEFT_REFIT      = 1, 
 
    /* WID_O_SEL_TOP_MIDDLE */
    DP_MIDDLE_UNLOAD   = 0, 
    DP_MIDDLE_SERVICE  = 1, 
 
    /* WID_O_SEL_TOP_RIGHT */
    DP_RIGHT_EMPTY     = 0, 
    DP_RIGHT_REFIT     = 1, 
 
    /* WID_O_SEL_TOP_ROW */
    DP_ROW_LOAD        = 0, 
    DP_ROW_DEPOT       = 1, 
    DP_ROW_CONDITIONAL = 2, 
 
    /* WID_O_SEL_BOTTOM_MIDDLE */
    DP_BOTTOM_MIDDLE_DELETE       = 0, 
    DP_BOTTOM_MIDDLE_STOP_SHARING = 1, 
  };
 
  int selected_order;
  VehicleOrderID order_over;         
  OrderPlaceObjectState goto_type;
  const Vehicle *vehicle; 
  Scrollbar *vscroll;
  bool can_do_refit;     
  bool can_do_autorefit; 
 
  VehicleOrderID OrderGetSel() const
  {
    int num = this->selected_order;
    return (num >= 0 && num < vehicle->GetNumOrders()) ? num : vehicle->GetNumOrders();
  }
 
  VehicleOrderID GetOrderFromPt(int y)
  {
    int sel = this->vscroll->GetScrolledRowFromWidget(y, this, WID_O_ORDER_LIST, WidgetDimensions::scaled.framerect.top);
    if (sel == INT_MAX) return INVALID_VEH_ORDER_ID;
    /* One past the orders is the 'End of Orders' line. */
    assert(IsInsideBS(sel, 0, vehicle->GetNumOrders() + 1));
    return sel;
  }
 
  void OrderClick_Goto(OrderPlaceObjectState type)
  {
    assert(type > OPOS_NONE && type < OPOS_END);
 
    static const HighLightStyle goto_place_style[OPOS_END - 1] = {
      HT_RECT | HT_VEHICLE, // OPOS_GOTO
      HT_NONE,              // OPOS_CONDITIONAL
      HT_VEHICLE,           // OPOS_SHARE
    };
    SetObjectToPlaceWnd(ANIMCURSOR_PICKSTATION, PAL_NONE, goto_place_style[type - 1], this);
    this->goto_type = type;
    this->SetWidgetDirty(WID_O_GOTO);
  }
 
  void OrderClick_FullLoad(OrderLoadFlags load_type, bool toggle = false)
  {
    VehicleOrderID sel_ord = this->OrderGetSel();
    const Order *order = this->vehicle->GetOrder(sel_ord);
 
    if (order == nullptr) return;
 
    if (toggle && order->GetLoadType() == load_type) {
      load_type = OLF_LOAD_IF_POSSIBLE; // reset to 'default'
    }
    if (order->GetLoadType() == load_type) return; // If we still match, do nothing
 
    Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, sel_ord, MOF_LOAD, load_type);
  }
 
  void OrderClick_Service(int i)
  {
    VehicleOrderID sel_ord = this->OrderGetSel();
 
    if (i < 0) {
      const Order *order = this->vehicle->GetOrder(sel_ord);
      if (order == nullptr) return;
      i = (order->GetDepotOrderType() & ODTFB_SERVICE) ? DA_ALWAYS_GO : DA_SERVICE;
    }
    Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, sel_ord, MOF_DEPOT_ACTION, i);
  }
 
  void OrderClick_NearestDepot()
  {
    Order order;
    order.next = nullptr;
    order.index = 0;
    order.MakeGoToDepot(INVALID_DEPOT, 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);
 
    Command<CMD_INSERT_ORDER>::Post(STR_ERROR_CAN_T_INSERT_NEW_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), order);
  }
 
  void OrderClick_Unload(OrderUnloadFlags unload_type, bool toggle = false)
  {
    VehicleOrderID sel_ord = this->OrderGetSel();
    const Order *order = this->vehicle->GetOrder(sel_ord);
 
    if (order == nullptr) return;
 
    if (toggle && order->GetUnloadType() == unload_type) {
      unload_type = OUF_UNLOAD_IF_POSSIBLE;
    }
    if (order->GetUnloadType() == unload_type) return; // If we still match, do nothing
 
    Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, sel_ord, MOF_UNLOAD, unload_type);
 
    /* Transfer and unload orders with leave empty as default */
    if (unload_type == OUFB_TRANSFER || unload_type == OUFB_UNLOAD) {
      Command<CMD_MODIFY_ORDER>::Post(this->vehicle->tile, this->vehicle->index, sel_ord, MOF_LOAD, OLFB_NO_LOAD);
      this->SetWidgetDirty(WID_O_FULL_LOAD);
    }
  }
 
  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 == nullptr || 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);
    Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, sel_ord, MOF_NON_STOP, non_stop);
  }
 
  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;
 
    Command<CMD_SKIP_TO_ORDER>::Post(_ctrl_pressed ? STR_ERROR_CAN_T_SKIP_TO_ORDER : STR_ERROR_CAN_T_SKIP_ORDER,
        this->vehicle->tile, this->vehicle->index, _ctrl_pressed ? this->OrderGetSel() : ((this->vehicle->cur_implicit_order_index + 1) % this->vehicle->GetNumOrders()));
  }
 
  void OrderClick_Delete()
  {
    /* When networking, move one order lower */
    int selected = this->selected_order + (int)_networking;
 
    if (Command<CMD_DELETE_ORDER>::Post(STR_ERROR_CAN_T_DELETE_THIS_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel())) {
      this->selected_order = selected >= this->vehicle->GetNumOrders() ? -1 : selected;
      this->UpdateButtonState();
    }
  }
 
  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 (Command<CMD_CLONE_ORDER>::Post(STR_ERROR_CAN_T_STOP_SHARING_ORDER_LIST, this->vehicle->tile, CO_COPY, this->vehicle->index, other_shared->index)) {
      this->UpdateButtonState();
    }
  }
 
  void OrderClick_Refit(int i, bool auto_refit)
  {
    if (_ctrl_pressed) {
      /* Cancel refitting */
      Command<CMD_ORDER_REFIT>::Post(this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), CARGO_NO_REFIT);
    } else {
      if (i == 1) { // Auto-refit to available cargo type.
        Command<CMD_ORDER_REFIT>::Post(this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), CARGO_AUTO_REFIT);
      } else {
        ShowVehicleRefitWindow(this->vehicle, this->OrderGetSel(), this, auto_refit);
      }
    }
  }
 
  void UpdateAutoRefitState()
  {
    this->can_do_refit = false;
    this->can_do_autorefit = false;
    for (const Vehicle *w = this->vehicle; w != nullptr; w = w->IsGroundVehicle() ? w->Next() : nullptr) {
      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(WindowDesc *desc, const Vehicle *v) : Window(desc)
  {
    this->vehicle = v;
 
    this->CreateNestedTree();
    this->vscroll = this->GetScrollbar(WID_O_SCROLLBAR);
    if (NWidgetCore *nwid = this->GetWidget<NWidgetCore>(WID_O_DEPOT_ACTION); nwid != nullptr) {
      nwid->tool_tip = STR_ORDER_TRAIN_DEPOT_ACTION_TOOLTIP + v->type;
    }
    this->FinishInitNested(v->index);
 
    this->selected_order = -1;
    this->order_over = INVALID_VEH_ORDER_ID;
    this->goto_type = OPOS_NONE;
    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;
      for (const Order *order : v->Orders()) {
        if (order->IsType(OT_GOTO_STATION)) station_orders++;
      }
 
      if (station_orders < 2) this->OrderClick_Goto(OPOS_GOTO);
    }
    this->OnInvalidateData(VIWD_MODIFY_ORDERS);
  }
 
  void UpdateWidgetSize(WidgetID widget, Dimension *size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension *fill, [[maybe_unused]] Dimension *resize) override
  {
    switch (widget) {
      case WID_O_ORDER_LIST:
        resize->height = GetCharacterHeight(FS_NORMAL);
        size->height = 6 * resize->height + padding.height;
        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;
      }
    }
  }
 
  void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
  {
    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);
        [[fallthrough]];
 
      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->CloseChildWindows();
        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->CloseChildWindows();
          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);
 
    /* 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 != nullptr || (train_row_sel != nullptr && left_sel != nullptr && middle_sel != nullptr && right_sel != nullptr));
 
 
    if (order == nullptr) {
      if (row_sel != nullptr) {
        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_EMPTY);
        this->DisableWidget(WID_O_NON_STOP);
        this->RaiseWidget(WID_O_NON_STOP);
      }
      this->DisableWidget(WID_O_FULL_LOAD);
      this->DisableWidget(WID_O_UNLOAD);
      this->DisableWidget(WID_O_REFIT_DROPDOWN);
    } 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
 
      switch (order->GetType()) {
        case OT_GOTO_STATION:
          if (row_sel != nullptr) {
            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->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 != nullptr) {
            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_EMPTY);
            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);
          this->DisableWidget(WID_O_REFIT_DROPDOWN);
          break;
 
        case OT_GOTO_DEPOT:
          if (row_sel != nullptr) {
            row_sel->SetDisplayedPlane(DP_ROW_DEPOT);
          } else {
            train_row_sel->SetDisplayedPlane(DP_GROUNDVEHICLE_ROW_NORMAL);
            left_sel->SetDisplayedPlane(DP_LEFT_REFIT);
            middle_sel->SetDisplayedPlane(DP_MIDDLE_SERVICE);
            right_sel->SetDisplayedPlane(DP_RIGHT_EMPTY);
            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()));
          break;
 
        case OT_CONDITIONAL: {
          if (row_sel != nullptr) {
            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 != nullptr) {
            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_EMPTY);
            this->DisableWidget(WID_O_NON_STOP);
          }
          this->DisableWidget(WID_O_FULL_LOAD);
          this->DisableWidget(WID_O_UNLOAD);
          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() 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();
  }
 
  void DrawWidget(const Rect &r, WidgetID widget) const override
  {
    if (widget != WID_O_ORDER_LIST) return;
 
    Rect ir = r.Shrink(WidgetDimensions::scaled.frametext, WidgetDimensions::scaled.framerect);
    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 + WidgetDimensions::scaled.hsep_normal;
    int middle = rtl ? ir.right - index_column_width : ir.left + index_column_width;
 
    int y = ir.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 != nullptr) {
        /* 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) - WidgetDimensions::scaled.framerect.top;
          int bottom = std::min(top + 2, ir.bottom);
          top = std::max(top - 3, ir.top);
          GfxFillRect(ir.left, top, ir.right, bottom, _colour_gradient[COLOUR_GREY][7]);
          break;
        }
        y += line_height;
 
        i++;
        order = order->next;
      }
 
      /* Reset counters for drawing the orders. */
      y = ir.top;
      i = this->vscroll->GetPosition();
      order = this->vehicle->GetOrder(i);
    }
 
    /* Draw the orders. */
    while (order != nullptr) {
      /* Don't draw anything if it extends past the end of the window. */
      if (!this->vscroll->IsVisible(i)) break;
 
      DrawOrderString(this->vehicle, order, i, y, i == this->selected_order, false, ir.left, middle, ir.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(rtl ? ir.left : middle, rtl ? middle : ir.right, y, str, (i == this->selected_order) ? TC_WHITE : TC_BLACK);
    }
  }
 
  void SetStringParameters(WidgetID widget) const override
  {
    switch (widget) {
      case WID_O_COND_VALUE: {
        VehicleOrderID sel = this->OrderGetSel();
        const Order *order = this->vehicle->GetOrder(sel);
 
        if (order != nullptr && order->IsType(OT_CONDITIONAL)) {
          uint value = order->GetConditionValue();
          if (order->GetConditionVariable() == OCV_MAX_SPEED) value = ConvertSpeedToDisplaySpeed(value, this->vehicle->type);
          SetDParam(0, value);
        }
        break;
      }
 
      case WID_O_CAPTION:
        SetDParam(0, this->vehicle->index);
        break;
 
      case WID_O_DEPOT_ACTION: {
        VehicleOrderID sel = this->OrderGetSel();
        const Order *order = this->vehicle->GetOrder(sel);
        if (order == nullptr || !order->IsType(OT_GOTO_DEPOT)) {
          /* We can't leave this param unset or the undefined behavior can cause a crash. */
          SetDParam(0, STR_EMPTY);
          break;
        };
 
        /* Select the current action selected in the dropdown. The flags don't match the dropdown so we can't just use an index. */
        if (order->GetDepotOrderType() & ODTFB_SERVICE) {
          SetDParam(0, STR_ORDER_DROP_SERVICE_DEPOT);
        } else if (order->GetDepotActionType() & ODATFB_HALT) {
          SetDParam(0, STR_ORDER_DROP_HALT_DEPOT);
        } else if (order->GetDepotActionType() & ODATFB_UNBUNCH) {
          SetDParam(0, STR_ORDER_DROP_UNBUNCH);
        } else {
          SetDParam(0, STR_ORDER_DROP_GO_ALWAYS_DEPOT);
        }
        break;
      }
    }
  }
 
  void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
  {
    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 = nullptr;
            order.index = 0;
            order.MakeConditional(order_id);
 
            Command<CMD_INSERT_ORDER>::Post(STR_ERROR_CAN_T_INSERT_NEW_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), order);
          }
          ResetObjectToPlace();
          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->CloseChildWindows();
 
        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()) {
            Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER,
                this->vehicle->tile, this->vehicle->index, sel,
                MOF_STOP_LOCATION, (this->vehicle->GetOrder(sel)->GetStopLocation() + 1) % OSL_END);
          }
        } else {
          /* Select clicked order */
          this->selected_order = sel;
 
          if (this->vehicle->owner == _local_company) {
            /* Activate drag and drop */
            SetObjectToPlaceWnd(SPR_CURSOR_MOUSE, PAL_NONE, HT_DRAG, this);
          }
        }
 
        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());
          assert(o != nullptr);
          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) {
            ResetObjectToPlace();
          } 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(OLF_FULL_LOAD_ANY, true);
        } 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(OUFB_UNLOAD, true);
        } else {
          ShowDropDownMenu(this, _order_unload_drowdown, this->vehicle->GetOrder(this->OrderGetSel())->GetUnloadType(), WID_O_UNLOAD, 0, 8);
        }
        break;
 
      case WID_O_REFIT:
        this->OrderClick_Refit(0, false);
        break;
 
      case WID_O_DEPOT_ACTION:
        ShowDropDownMenu(this, _order_depot_action_dropdown, DepotActionStringIndex(this->vehicle->GetOrder(this->OrderGetSel())), WID_O_DEPOT_ACTION, 0, 0);
        break;
 
      case WID_O_REFIT_DROPDOWN:
        if (this->GetWidget<NWidgetLeaf>(widget)->ButtonHit(pt)) {
          this->OrderClick_Refit(0, true);
        } else {
          ShowDropDownMenu(this, _order_refit_action_dropdown, 0, WID_O_REFIT_DROPDOWN, 0, 0);
        }
        break;
 
      case WID_O_TIMETABLE_VIEW:
        ShowTimetableWindow(this->vehicle);
        break;
 
      case WID_O_COND_VARIABLE: {
        DropDownList list;
        for (uint i = 0; i < lengthof(_order_conditional_variable); i++) {
          list.push_back(std::make_unique<DropDownListStringItem>(STR_ORDER_CONDITIONAL_LOAD_PERCENTAGE + _order_conditional_variable[i], _order_conditional_variable[i], false));
        }
        ShowDropDownList(this, std::move(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());
        assert(o != nullptr);
        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());
        assert(order != nullptr);
        uint value = order->GetConditionValue();
        if (order->GetConditionVariable() == OCV_MAX_SPEED) value = ConvertSpeedToDisplaySpeed(value, this->vehicle->type);
        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;
    }
  }
 
  void OnQueryTextFinished(char *str) override
  {
    if (!StrEmpty(str)) {
      VehicleOrderID sel = this->OrderGetSel();
      uint value = atoi(str);
 
      switch (this->vehicle->GetOrder(sel)->GetConditionVariable()) {
        case OCV_MAX_SPEED:
          value = ConvertDisplaySpeedToSpeed(value, this->vehicle->type);
          break;
 
        case OCV_RELIABILITY:
        case OCV_LOAD_PERCENTAGE:
          value = Clamp(value, 0, 100);
          break;
 
        default:
          break;
      }
      Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, sel, MOF_COND_VALUE, Clamp(value, 0, 2047));
    }
  }
 
  void OnDropdownSelect(WidgetID widget, int index) override
  {
    switch (widget) {
      case WID_O_NON_STOP:
        this->OrderClick_Nonstop(index);
        break;
 
      case WID_O_FULL_LOAD:
        this->OrderClick_FullLoad((OrderLoadFlags)index);
        break;
 
      case WID_O_UNLOAD:
        this->OrderClick_Unload((OrderUnloadFlags)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_DEPOT_ACTION:
        this->OrderClick_Service(index);
        break;
 
      case WID_O_REFIT_DROPDOWN:
        this->OrderClick_Refit(index, true);
        break;
 
      case WID_O_COND_VARIABLE:
        Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), MOF_COND_VARIABLE, index);
        break;
 
      case WID_O_COND_COMPARATOR:
        Command<CMD_MODIFY_ORDER>::Post(STR_ERROR_CAN_T_MODIFY_THIS_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), MOF_COND_COMPARATOR, index);
        break;
    }
  }
 
  void OnDragDrop(Point pt, WidgetID widget) override
  {
    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()) &&
            Command<CMD_MOVE_ORDER>::Post(STR_ERROR_CAN_T_MOVE_THIS_ORDER, this->vehicle->tile, this->vehicle->index, from_order, to_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;
    }
 
    ResetObjectToPlace();
 
    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);
    }
  }
 
  EventState OnHotkey(int hotkey) override
  {
    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(OLF_FULL_LOAD_ANY, true); break;
      case OHK_UNLOAD:         this->OrderClick_Unload(OUFB_UNLOAD, true); break;
      case OHK_NEAREST_DEPOT:  this->OrderClick_NearestDepot(); break;
      case OHK_ALWAYS_SERVICE: this->OrderClick_Service(-1); break;
      case OHK_TRANSFER:       this->OrderClick_Unload(OUFB_TRANSFER, true); break;
      case OHK_NO_UNLOAD:      this->OrderClick_Unload(OUFB_NO_UNLOAD, true); break;
      case OHK_NO_LOAD:        this->OrderClick_FullLoad(OLFB_NO_LOAD, true); break;
      default: return ES_NOT_HANDLED;
    }
    return ES_HANDLED;
  }
 
  void OnPlaceObject([[maybe_unused]] Point pt, TileIndex tile) override
  {
    if (this->goto_type == OPOS_GOTO) {
      const Order cmd = GetOrderCmdFromTile(this->vehicle, tile);
      if (cmd.IsType(OT_NOTHING)) return;
 
      if (Command<CMD_INSERT_ORDER>::Post(STR_ERROR_CAN_T_INSERT_NEW_ORDER, this->vehicle->tile, this->vehicle->index, this->OrderGetSel(), cmd)) {
        /* With quick goto the Go To button stays active */
        if (!_settings_client.gui.quick_goto) ResetObjectToPlace();
      }
    }
  }
 
  bool OnVehicleSelect(const Vehicle *v) override
  {
    /* 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 (Command<CMD_CLONE_ORDER>::Post(share_order ? STR_ERROR_CAN_T_SHARE_ORDER_LIST : STR_ERROR_CAN_T_COPY_ORDER_LIST,
        this->vehicle->tile, share_order ? CO_SHARE : CO_COPY, this->vehicle->index, v->index)) {
      this->selected_order = -1;
      ResetObjectToPlace();
    }
    return true;
  }
 
  bool OnVehicleSelect(VehicleList::const_iterator begin, VehicleList::const_iterator end) override
  {
    bool share_order = _ctrl_pressed || this->goto_type == OPOS_SHARE;
    if (this->vehicle->GetNumOrders() != 0 && !share_order) return false;
 
    if (!share_order) {
      /* If CTRL is not pressed: If all the vehicles in this list have the same orders, then copy orders */
      if (AllEqual(begin, end, [](const Vehicle *v1, const Vehicle *v2) {
        return VehiclesHaveSameOrderList(v1, v2);
      })) {
        OnVehicleSelect(*begin);
      } else {
        ShowErrorMessage(STR_ERROR_CAN_T_COPY_ORDER_LIST, STR_ERROR_CAN_T_COPY_ORDER_VEHICLE_LIST, WL_INFO);
      }
    } else {
      /* If CTRL is pressed: If all the vehicles in this list share orders, then copy orders */
      if (AllEqual(begin, end, [](const Vehicle *v1, const Vehicle *v2) {
        return v1->FirstShared() == v2->FirstShared();
      })) {
        OnVehicleSelect(*begin);
      } else {
        ShowErrorMessage(STR_ERROR_CAN_T_SHARE_ORDER_LIST, STR_ERROR_CAN_T_SHARE_ORDER_VEHICLE_LIST, WL_INFO);
      }
    }
 
    return true;
  }
 
  void OnPlaceObjectAbort() override
  {
    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);
    }
  }
 
  void OnMouseDrag(Point pt, WidgetID widget) override
  {
    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);
        }
      }
    }
  }
 
  void OnResize() override
  {
    /* Update the scroll bar */
    this->vscroll->SetCapacityFromWidget(this, WID_O_ORDER_LIST);
  }
 
  static inline HotkeyList hotkeys{"order", {
    Hotkey('D', "skip", OHK_SKIP),
    Hotkey('F', "delete", OHK_DELETE),
    Hotkey('G', "goto", OHK_GOTO),
    Hotkey('H', "nonstop", OHK_NONSTOP),
    Hotkey('J', "fullload", OHK_FULLLOAD),
    Hotkey('K', "unload", OHK_UNLOAD),
    Hotkey(0, "nearest_depot", OHK_NEAREST_DEPOT),
    Hotkey(0, "always_service", OHK_ALWAYS_SERVICE),
    Hotkey(0, "transfer", OHK_TRANSFER),
    Hotkey(0, "no_unload", OHK_NO_UNLOAD),
    Hotkey(0, "no_load", OHK_NO_LOAD),
  }};
};
 
static constexpr 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(WWT_PUSHTXTBTN, COLOUR_GREY, WID_O_REFIT), SetMinimalSize(93, 12), SetFill(1, 0),
                              SetDataTip(STR_ORDER_REFIT, STR_ORDER_REFIT_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(NWID_BUTTON_DROPDOWN, COLOUR_GREY, WID_O_DEPOT_ACTION), SetMinimalSize(93, 12), SetFill(1, 0),
                              SetDataTip(STR_JUST_STRING, STR_NULL), SetResize(1, 0),
        EndContainer(),
        NWidget(NWID_SELECTION, INVALID_COLOUR, WID_O_SEL_TOP_RIGHT),
          NWidget(WWT_PANEL, COLOUR_GREY), SetMinimalSize(93, 12), SetFill(1, 0), SetResize(1, 0), EndContainer(),
          NWidget(NWID_BUTTON_DROPDOWN, 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_JUST_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 _orders_train_desc(__FILE__, __LINE__,
  WDP_AUTO, "view_vehicle_orders_train", 384, 100,
  WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
  WDF_CONSTRUCTION,
  std::begin(_nested_orders_train_widgets), std::end(_nested_orders_train_widgets),
  &OrdersWindow::hotkeys
);
 
static constexpr 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(NWID_BUTTON_DROPDOWN, 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_DEPOT_ACTION), SetMinimalSize(124, 12), SetFill(1, 0),
                          SetDataTip(STR_JUST_STRING, STR_NULL), 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_JUST_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 _orders_desc(__FILE__, __LINE__,
  WDP_AUTO, "view_vehicle_orders", 384, 100,
  WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
  WDF_CONSTRUCTION,
  std::begin(_nested_orders_widgets), std::end(_nested_orders_widgets),
  &OrdersWindow::hotkeys
);
 
static constexpr 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 _other_orders_desc(__FILE__, __LINE__,
  WDP_AUTO, "view_vehicle_orders_competitor", 384, 86,
  WC_VEHICLE_ORDERS, WC_VEHICLE_VIEW,
  WDF_CONSTRUCTION,
  std::begin(_nested_other_orders_widgets), std::end(_nested_other_orders_widgets),
  &OrdersWindow::hotkeys
);
 
void ShowOrdersWindow(const Vehicle *v)
{
  CloseWindowById(WC_VEHICLE_DETAILS, v->index, false);
  CloseWindowById(WC_VEHICLE_TIMETABLE, v->index, false);
  if (BringWindowToFrontById(WC_VEHICLE_ORDERS, v->index) != nullptr) return;
 
  /* Using a different WindowDescs for _local_company causes problems.
   * Due to this we have to close order windows in ChangeWindowOwner/CloseCompanyWindows,
   * 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);
  }
}