Update: Translations from eints

[openttd-github.git] / src / industry_gui.cpp

/*
 * 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 industry_gui.cpp GUIs related to industries. */

#include "stdafx.h"
#include "error.h"
#include "gui.h"
#include "settings_gui.h"
#include "sound_func.h"
#include "window_func.h"
#include "textbuf_gui.h"
#include "command_func.h"
#include "viewport_func.h"
#include "industry.h"
#include "town.h"
#include "cheat_type.h"
#include "newgrf_industries.h"
#include "newgrf_text.h"
#include "newgrf_debug.h"
#include "network/network.h"
#include "strings_func.h"
#include "company_func.h"
#include "tilehighlight_func.h"
#include "string_func.h"
#include "sortlist_type.h"
#include "dropdown_func.h"
#include "company_base.h"
#include "core/geometry_func.hpp"
#include "core/random_func.hpp"
#include "core/backup_type.hpp"
#include "genworld.h"
#include "smallmap_gui.h"
#include "dropdown_type.h"
#include "clear_map.h"
#include "zoom_func.h"
#include "industry_cmd.h"
#include "graph_gui.h"
#include "querystring_gui.h"
#include "stringfilter_type.h"
#include "timer/timer.h"
#include "timer/timer_window.h"
#include "hotkeys.h"

#include "widgets/industry_widget.h"

#include "table/strings.h"

#include <bitset>

#include "safeguards.h"

bool _ignore_restrictions;
std::bitset<NUM_INDUSTRYTYPES> _displayed_industries; ///< Communication from the industry chain window to the smallmap window about what industries to display.

/** Cargo suffix type (for which window is it requested) */
enum CargoSuffixType {
        CST_FUND,  ///< Fund-industry window
        CST_VIEW,  ///< View-industry window
        CST_DIR,   ///< Industry-directory window
};

/** Ways of displaying the cargo. */
enum CargoSuffixDisplay {
        CSD_CARGO,             ///< Display the cargo without sub-type (cb37 result 401).
        CSD_CARGO_AMOUNT,      ///< Display the cargo and amount (if useful), but no sub-type (cb37 result 400 or fail).
        CSD_CARGO_TEXT,        ///< Display then cargo and supplied string (cb37 result 800-BFF).
        CSD_CARGO_AMOUNT_TEXT, ///< Display then cargo, amount, and string (cb37 result 000-3FF).
};

/** Transfer storage of cargo suffix information. */
struct CargoSuffix {
        CargoSuffixDisplay display; ///< How to display the cargo and text.
        std::string text;           ///< Cargo suffix text.
};

extern void GenerateIndustries();
static void ShowIndustryCargoesWindow(IndustryType id);

/**
 * Gets the string to display after the cargo name (using callback 37)
 * @param cargo the cargo for which the suffix is requested, meaning depends on presence of flag 18 in prop 1A
 * @param cst the cargo suffix type (for which window is it requested). @see CargoSuffixType
 * @param ind the industry (nullptr if in fund window)
 * @param ind_type the industry type
 * @param indspec the industry spec
 * @param suffix is filled with the string to display
 */
static void GetCargoSuffix(uint cargo, CargoSuffixType cst, const Industry *ind, IndustryType ind_type, const IndustrySpec *indspec, CargoSuffix &suffix)
{
        suffix.text.clear();
        suffix.display = CSD_CARGO_AMOUNT;

        if (HasBit(indspec->callback_mask, CBM_IND_CARGO_SUFFIX)) {
                TileIndex t = (cst != CST_FUND) ? ind->location.tile : INVALID_TILE;
                uint16_t callback = GetIndustryCallback(CBID_INDUSTRY_CARGO_SUFFIX, 0, (cst << 8) | cargo, const_cast<Industry *>(ind), ind_type, t);
                if (callback == CALLBACK_FAILED) return;

                if (indspec->grf_prop.grffile->grf_version < 8) {
                        if (GB(callback, 0, 8) == 0xFF) return;
                        if (callback < 0x400) {
                                StartTextRefStackUsage(indspec->grf_prop.grffile, 6);
                                suffix.text = GetString(GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 + callback));
                                StopTextRefStackUsage();
                                suffix.display = CSD_CARGO_AMOUNT_TEXT;
                                return;
                        }
                        ErrorUnknownCallbackResult(indspec->grf_prop.grffile->grfid, CBID_INDUSTRY_CARGO_SUFFIX, callback);
                        return;

                } else { // GRF version 8 or higher.
                        if (callback == 0x400) return;
                        if (callback == 0x401) {
                                suffix.display = CSD_CARGO;
                                return;
                        }
                        if (callback < 0x400) {
                                StartTextRefStackUsage(indspec->grf_prop.grffile, 6);
                                suffix.text = GetString(GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 + callback));
                                StopTextRefStackUsage();
                                suffix.display = CSD_CARGO_AMOUNT_TEXT;
                                return;
                        }
                        if (callback >= 0x800 && callback < 0xC00) {
                                StartTextRefStackUsage(indspec->grf_prop.grffile, 6);
                                suffix.text = GetString(GetGRFStringID(indspec->grf_prop.grffile->grfid, 0xD000 - 0x800 + callback));
                                StopTextRefStackUsage();
                                suffix.display = CSD_CARGO_TEXT;
                                return;
                        }
                        ErrorUnknownCallbackResult(indspec->grf_prop.grffile->grfid, CBID_INDUSTRY_CARGO_SUFFIX, callback);
                        return;
                }
        }
}

enum CargoSuffixInOut {
        CARGOSUFFIX_OUT = 0,
        CARGOSUFFIX_IN  = 1,
};

/**
 * Gets all strings to display after the cargoes of industries (using callback 37)
 * @param use_input get suffixes for output cargoes or input cargoes?
 * @param cst the cargo suffix type (for which window is it requested). @see CargoSuffixType
 * @param ind the industry (nullptr if in fund window)
 * @param ind_type the industry type
 * @param indspec the industry spec
 * @param cargoes array with cargotypes. for INVALID_CARGO no suffix will be determined
 * @param suffixes is filled with the suffixes
 */
template <typename TC, typename TS>
static inline void GetAllCargoSuffixes(CargoSuffixInOut use_input, CargoSuffixType cst, const Industry *ind, IndustryType ind_type, const IndustrySpec *indspec, const TC &cargoes, TS &suffixes)
{
        static_assert(std::tuple_size_v<std::remove_reference_t<decltype(cargoes)>> <= lengthof(suffixes));

        if (indspec->behaviour & INDUSTRYBEH_CARGOTYPES_UNLIMITED) {
                /* Reworked behaviour with new many-in-many-out scheme */
                for (uint j = 0; j < lengthof(suffixes); j++) {
                        if (IsValidCargoID(cargoes[j])) {
                                uint8_t local_id = indspec->grf_prop.grffile->cargo_map[cargoes[j]]; // should we check the value for valid?
                                uint cargotype = local_id << 16 | use_input;
                                GetCargoSuffix(cargotype, cst, ind, ind_type, indspec, suffixes[j]);
                        } else {
                                suffixes[j].text.clear();
                                suffixes[j].display = CSD_CARGO;
                        }
                }
        } else {
                /* Compatible behaviour with old 3-in-2-out scheme */
                for (uint j = 0; j < lengthof(suffixes); j++) {
                        suffixes[j].text.clear();
                        suffixes[j].display = CSD_CARGO;
                }
                switch (use_input) {
                        case CARGOSUFFIX_OUT:
                                // Handle INDUSTRY_ORIGINAL_NUM_OUTPUTS cargoes
                                if (IsValidCargoID(cargoes[0])) GetCargoSuffix(3, cst, ind, ind_type, indspec, suffixes[0]);
                                if (IsValidCargoID(cargoes[1])) GetCargoSuffix(4, cst, ind, ind_type, indspec, suffixes[1]);
                                break;
                        case CARGOSUFFIX_IN:
                                // Handle INDUSTRY_ORIGINAL_NUM_INPUTS cargoes
                                if (IsValidCargoID(cargoes[0])) GetCargoSuffix(0, cst, ind, ind_type, indspec, suffixes[0]);
                                if (IsValidCargoID(cargoes[1])) GetCargoSuffix(1, cst, ind, ind_type, indspec, suffixes[1]);
                                if (IsValidCargoID(cargoes[2])) GetCargoSuffix(2, cst, ind, ind_type, indspec, suffixes[2]);
                                break;
                        default:
                                NOT_REACHED();
                }
        }
}

/**
 * Gets the strings to display after the cargo of industries (using callback 37)
 * @param use_input get suffixes for output cargo or input cargo?
 * @param cst the cargo suffix type (for which window is it requested). @see CargoSuffixType
 * @param ind the industry (nullptr if in fund window)
 * @param ind_type the industry type
 * @param indspec the industry spec
 * @param cargo cargotype. for INVALID_CARGO no suffix will be determined
 * @param slot accepts/produced slot number, used for old-style 3-in/2-out industries.
 * @param suffix is filled with the suffix
 */
void GetCargoSuffix(CargoSuffixInOut use_input, CargoSuffixType cst, const Industry *ind, IndustryType ind_type, const IndustrySpec *indspec, CargoID cargo, uint8_t slot, CargoSuffix &suffix)
{
        suffix.text.clear();
        suffix.display = CSD_CARGO;
        if (!IsValidCargoID(cargo)) return;
        if (indspec->behaviour & INDUSTRYBEH_CARGOTYPES_UNLIMITED) {
                uint8_t local_id = indspec->grf_prop.grffile->cargo_map[cargo]; // should we check the value for valid?
                uint cargotype = local_id << 16 | use_input;
                GetCargoSuffix(cargotype, cst, ind, ind_type, indspec, suffix);
        } else if (use_input == CARGOSUFFIX_IN) {
                if (slot < INDUSTRY_ORIGINAL_NUM_INPUTS) GetCargoSuffix(slot, cst, ind, ind_type, indspec, suffix);
        } else if (use_input == CARGOSUFFIX_OUT) {
                if (slot < INDUSTRY_ORIGINAL_NUM_OUTPUTS) GetCargoSuffix(slot + INDUSTRY_ORIGINAL_NUM_INPUTS, cst, ind, ind_type, indspec, suffix);
        }
}

std::array<IndustryType, NUM_INDUSTRYTYPES> _sorted_industry_types; ///< Industry types sorted by name.

/** Sort industry types by their name. */
static bool IndustryTypeNameSorter(const IndustryType &a, const IndustryType &b)
{
        int r = StrNaturalCompare(GetString(GetIndustrySpec(a)->name), GetString(GetIndustrySpec(b)->name)); // Sort by name (natural sorting).

        /* If the names are equal, sort by industry type. */
        return (r != 0) ? r < 0 : (a < b);
}

/**
 * Initialize the list of sorted industry types.
 */
void SortIndustryTypes()
{
        /* Add each industry type to the list. */
        for (IndustryType i = 0; i < NUM_INDUSTRYTYPES; i++) {
                _sorted_industry_types[i] = i;
        }

        /* Sort industry types by name. */
        std::sort(_sorted_industry_types.begin(), _sorted_industry_types.end(), IndustryTypeNameSorter);
}

/**
 * Command callback. In case of failure to build an industry, show an error message.
 * @param result Result of the command.
 * @param tile   Tile where the industry is placed.
 * @param indtype Industry type.
 */
void CcBuildIndustry(Commands, const CommandCost &result, TileIndex tile, IndustryType indtype, uint32_t, bool, uint32_t)
{
        if (result.Succeeded()) return;

        if (indtype < NUM_INDUSTRYTYPES) {
                const IndustrySpec *indsp = GetIndustrySpec(indtype);
                if (indsp->enabled) {
                        SetDParam(0, indsp->name);
                        ShowErrorMessage(STR_ERROR_CAN_T_BUILD_HERE, result.GetErrorMessage(), WL_INFO, TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE);
                }
        }
}

static constexpr NWidgetPart _nested_build_industry_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
                NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_FUND_INDUSTRY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_SHADEBOX, COLOUR_DARK_GREEN),
                NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
                NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
        EndContainer(),
        NWidget(NWID_SELECTION, COLOUR_DARK_GREEN, WID_DPI_SCENARIO_EDITOR_PANE),
                NWidget(NWID_VERTICAL),
                        NWidget(WWT_TEXTBTN, COLOUR_DARK_GREEN, WID_DPI_CREATE_RANDOM_INDUSTRIES_WIDGET), SetMinimalSize(0, 12), SetFill(1, 0), SetResize(1, 0),
                                        SetDataTip(STR_FUND_INDUSTRY_MANY_RANDOM_INDUSTRIES, STR_FUND_INDUSTRY_MANY_RANDOM_INDUSTRIES_TOOLTIP),
                        NWidget(WWT_TEXTBTN, COLOUR_DARK_GREEN, WID_DPI_REMOVE_ALL_INDUSTRIES_WIDGET), SetMinimalSize(0, 12), SetFill(1, 0), SetResize(1, 0),
                                        SetDataTip(STR_FUND_INDUSTRY_REMOVE_ALL_INDUSTRIES, STR_FUND_INDUSTRY_REMOVE_ALL_INDUSTRIES_TOOLTIP),
                EndContainer(),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, WID_DPI_MATRIX_WIDGET), SetMatrixDataTip(1, 0, STR_FUND_INDUSTRY_SELECTION_TOOLTIP), SetFill(1, 0), SetResize(1, 1), SetScrollbar(WID_DPI_SCROLLBAR),
                NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_DPI_SCROLLBAR),
        EndContainer(),
        NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_DPI_INFOPANEL), SetResize(1, 0),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_TEXTBTN, COLOUR_DARK_GREEN, WID_DPI_DISPLAY_WIDGET), SetFill(1, 0), SetResize(1, 0),
                                SetDataTip(STR_INDUSTRY_DISPLAY_CHAIN, STR_INDUSTRY_DISPLAY_CHAIN_TOOLTIP),
                NWidget(WWT_TEXTBTN, COLOUR_DARK_GREEN, WID_DPI_FUND_WIDGET), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_JUST_STRING, STR_NULL),
                NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
        EndContainer(),
};

/** Window definition of the dynamic place industries gui */
static WindowDesc _build_industry_desc(
        WDP_AUTO, "build_industry", 170, 212,
        WC_BUILD_INDUSTRY, WC_NONE,
        WDF_CONSTRUCTION,
        _nested_build_industry_widgets
);

/** Build (fund or prospect) a new industry, */
class BuildIndustryWindow : public Window {
        IndustryType selected_type;                 ///< industry corresponding to the above index
        std::vector<IndustryType> list;             ///< List of industries.
        bool enabled;                               ///< Availability state of the selected industry.
        Scrollbar *vscroll;
        Dimension legend;                           ///< Dimension of the legend 'blob'.

        /** The largest allowed minimum-width of the window, given in line heights */
        static const int MAX_MINWIDTH_LINEHEIGHTS = 20;

        void UpdateAvailability()
        {
                this->enabled = this->selected_type != INVALID_INDUSTRYTYPE && (_game_mode == GM_EDITOR || GetIndustryProbabilityCallback(this->selected_type, IACT_USERCREATION, 1) > 0);
        }

        void SetupArrays()
        {
                this->list.clear();

                /* Fill the arrays with industries.
                 * The tests performed after the enabled allow to load the industries
                 * In the same way they are inserted by grf (if any)
                 */
                for (IndustryType ind : _sorted_industry_types) {
                        const IndustrySpec *indsp = GetIndustrySpec(ind);
                        if (indsp->enabled) {
                                /* Rule is that editor mode loads all industries.
                                 * In game mode, all non raw industries are loaded too
                                 * and raw ones are loaded only when setting allows it */
                                if (_game_mode != GM_EDITOR && indsp->IsRawIndustry() && _settings_game.construction.raw_industry_construction == 0) {
                                        /* Unselect if the industry is no longer in the list */
                                        if (this->selected_type == ind) this->selected_type = INVALID_INDUSTRYTYPE;
                                        continue;
                                }

                                this->list.push_back(ind);
                        }
                }

                /* First industry type is selected if the current selection is invalid. */
                if (this->selected_type == INVALID_INDUSTRYTYPE && !this->list.empty()) this->selected_type = this->list[0];

                this->UpdateAvailability();

                this->vscroll->SetCount(this->list.size());
        }

        /** Update status of the fund and display-chain widgets. */
        void SetButtons()
        {
                this->SetWidgetDisabledState(WID_DPI_FUND_WIDGET, this->selected_type != INVALID_INDUSTRYTYPE && !this->enabled);
                this->SetWidgetDisabledState(WID_DPI_DISPLAY_WIDGET, this->selected_type == INVALID_INDUSTRYTYPE && this->enabled);
        }

        /**
         * Build a string of cargo names with suffixes attached.
         * This is distinct from the CARGO_LIST string formatting code in two ways:
         *  - This cargo list uses the order defined by the industry, rather than alphabetic.
         *  - NewGRF-supplied suffix strings can be attached to each cargo.
         *
         * @param cargolist    Array of CargoID to display
         * @param cargo_suffix Array of suffixes to attach to each cargo
         * @param cargolistlen Length of arrays
         * @param prefixstr    String to use for the first item
         * @return A formatted raw string
         */
        std::string MakeCargoListString(const std::span<const CargoID> cargolist, const std::span<const CargoSuffix> cargo_suffix, StringID prefixstr) const
        {
                assert(cargolist.size() == cargo_suffix.size());

                std::string cargostring;
                size_t numcargo = 0;
                size_t firstcargo = 0;

                for (size_t j = 0; j < cargolist.size(); j++) {
                        if (!IsValidCargoID(cargolist[j])) continue;
                        numcargo++;
                        if (numcargo == 1) {
                                firstcargo = j;
                                continue;
                        }
                        SetDParam(0, CargoSpec::Get(cargolist[j])->name);
                        SetDParamStr(1, cargo_suffix[j].text);
                        AppendStringInPlace(cargostring, STR_INDUSTRY_VIEW_CARGO_LIST_EXTENSION);
                }

                if (numcargo > 0) {
                        SetDParam(0, CargoSpec::Get(cargolist[firstcargo])->name);
                        SetDParamStr(1, cargo_suffix[firstcargo].text);
                        cargostring = GetString(prefixstr) + cargostring;
                } else {
                        SetDParam(0, STR_JUST_NOTHING);
                        SetDParamStr(1, "");
                        cargostring = GetString(prefixstr);
                }

                return cargostring;
        }

public:
        BuildIndustryWindow() : Window(_build_industry_desc)
        {
                this->selected_type = INVALID_INDUSTRYTYPE;

                this->CreateNestedTree();
                this->vscroll = this->GetScrollbar(WID_DPI_SCROLLBAR);
                /* Show scenario editor tools in editor. */
                if (_game_mode != GM_EDITOR) {
                        this->GetWidget<NWidgetStacked>(WID_DPI_SCENARIO_EDITOR_PANE)->SetDisplayedPlane(SZSP_HORIZONTAL);
                }
                this->FinishInitNested(0);

                this->SetButtons();
        }

        void OnInit() override
        {
                /* Width of the legend blob -- slightly larger than the smallmap legend blob. */
                this->legend.height = GetCharacterHeight(FS_SMALL);
                this->legend.width = this->legend.height * 9 / 6;

                this->SetupArrays();
        }

        void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
        {
                switch (widget) {
                        case WID_DPI_MATRIX_WIDGET: {
                                SetDParamMaxDigits(0, 4);
                                Dimension count = GetStringBoundingBox(STR_JUST_COMMA, FS_SMALL);
                                Dimension d{};
                                for (const auto &indtype : this->list) {
                                        d = maxdim(d, GetStringBoundingBox(GetIndustrySpec(indtype)->name));
                                }
                                resize.height = std::max<uint>({this->legend.height, d.height, count.height}) + padding.height;
                                d.width += this->legend.width + WidgetDimensions::scaled.hsep_wide + WidgetDimensions::scaled.hsep_normal + count.width + padding.width;
                                d.height = 5 * resize.height;
                                size = maxdim(size, d);
                                break;
                        }

                        case WID_DPI_INFOPANEL: {
                                /* Extra line for cost outside of editor. */
                                int height = 2 + (_game_mode == GM_EDITOR ? 0 : 1);
                                uint extra_lines_req = 0;
                                uint extra_lines_prd = 0;
                                uint extra_lines_newgrf = 0;
                                uint max_minwidth = GetCharacterHeight(FS_NORMAL) * MAX_MINWIDTH_LINEHEIGHTS;
                                Dimension d = {0, 0};
                                for (const auto &indtype : this->list) {
                                        const IndustrySpec *indsp = GetIndustrySpec(indtype);
                                        CargoSuffix cargo_suffix[std::tuple_size_v<decltype(indsp->accepts_cargo)>];

                                        /* Measure the accepted cargoes, if any. */
                                        GetAllCargoSuffixes(CARGOSUFFIX_IN, CST_FUND, nullptr, indtype, indsp, indsp->accepts_cargo, cargo_suffix);
                                        std::string cargostring = this->MakeCargoListString(indsp->accepts_cargo, cargo_suffix, STR_INDUSTRY_VIEW_REQUIRES_N_CARGO);
                                        Dimension strdim = GetStringBoundingBox(cargostring);
                                        if (strdim.width > max_minwidth) {
                                                extra_lines_req = std::max(extra_lines_req, strdim.width / max_minwidth + 1);
                                                strdim.width = max_minwidth;
                                        }
                                        d = maxdim(d, strdim);

                                        /* Measure the produced cargoes, if any. */
                                        GetAllCargoSuffixes(CARGOSUFFIX_OUT, CST_FUND, nullptr, indtype, indsp, indsp->produced_cargo, cargo_suffix);
                                        cargostring = this->MakeCargoListString(indsp->produced_cargo, cargo_suffix, STR_INDUSTRY_VIEW_PRODUCES_N_CARGO);
                                        strdim = GetStringBoundingBox(cargostring);
                                        if (strdim.width > max_minwidth) {
                                                extra_lines_prd = std::max(extra_lines_prd, strdim.width / max_minwidth + 1);
                                                strdim.width = max_minwidth;
                                        }
                                        d = maxdim(d, strdim);

                                        if (indsp->grf_prop.grffile != nullptr) {
                                                /* Reserve a few extra lines for text from an industry NewGRF. */
                                                extra_lines_newgrf = 4;
                                        }
                                }

                                /* Set it to something more sane :) */
                                height += extra_lines_prd + extra_lines_req + extra_lines_newgrf;
                                size.height = height * GetCharacterHeight(FS_NORMAL) + padding.height;
                                size.width = d.width + padding.width;
                                break;
                        }

                        case WID_DPI_FUND_WIDGET: {
                                Dimension d = GetStringBoundingBox(STR_FUND_INDUSTRY_BUILD_NEW_INDUSTRY);
                                d = maxdim(d, GetStringBoundingBox(STR_FUND_INDUSTRY_PROSPECT_NEW_INDUSTRY));
                                d = maxdim(d, GetStringBoundingBox(STR_FUND_INDUSTRY_FUND_NEW_INDUSTRY));
                                d.width += padding.width;
                                d.height += padding.height;
                                size = maxdim(size, d);
                                break;
                        }
                }
        }

        void SetStringParameters(WidgetID widget) const override
        {
                switch (widget) {
                        case WID_DPI_FUND_WIDGET:
                                /* Raw industries might be prospected. Show this fact by changing the string
                                 * In Editor, you just build, while ingame, or you fund or you prospect */
                                if (_game_mode == GM_EDITOR) {
                                        /* We've chosen many random industries but no industries have been specified */
                                        SetDParam(0, STR_FUND_INDUSTRY_BUILD_NEW_INDUSTRY);
                                } else {
                                        if (this->selected_type != INVALID_INDUSTRYTYPE) {
                                                const IndustrySpec *indsp = GetIndustrySpec(this->selected_type);
                                                SetDParam(0, (_settings_game.construction.raw_industry_construction == 2 && indsp->IsRawIndustry()) ? STR_FUND_INDUSTRY_PROSPECT_NEW_INDUSTRY : STR_FUND_INDUSTRY_FUND_NEW_INDUSTRY);
                                        } else {
                                                SetDParam(0, STR_FUND_INDUSTRY_FUND_NEW_INDUSTRY);
                                        }
                                }
                                break;
                }
        }

        void DrawWidget(const Rect &r, WidgetID widget) const override
        {
                switch (widget) {
                        case WID_DPI_MATRIX_WIDGET: {
                                bool rtl = _current_text_dir == TD_RTL;
                                Rect text = r.WithHeight(this->resize.step_height).Shrink(WidgetDimensions::scaled.matrix);
                                Rect icon = text.WithWidth(this->legend.width, rtl);
                                text = text.Indent(this->legend.width + WidgetDimensions::scaled.hsep_wide, rtl);

                                /* Vertical offset for legend icon. */
                                icon.top    = r.top + (this->resize.step_height - this->legend.height + 1) / 2;
                                icon.bottom = icon.top + this->legend.height - 1;

                                auto [first, last] = this->vscroll->GetVisibleRangeIterators(this->list);
                                for (auto it = first; it != last; ++it) {
                                        IndustryType type = *it;
                                        bool selected = this->selected_type == type;
                                        const IndustrySpec *indsp = GetIndustrySpec(type);

                                        /* Draw the name of the industry in white is selected, otherwise, in orange */
                                        DrawString(text, indsp->name, selected ? TC_WHITE : TC_ORANGE);
                                        GfxFillRect(icon, selected ? PC_WHITE : PC_BLACK);
                                        GfxFillRect(icon.Shrink(WidgetDimensions::scaled.bevel), indsp->map_colour);
                                        SetDParam(0, Industry::GetIndustryTypeCount(type));
                                        DrawString(text, STR_JUST_COMMA, TC_BLACK, SA_RIGHT, false, FS_SMALL);

                                        text = text.Translate(0, this->resize.step_height);
                                        icon = icon.Translate(0, this->resize.step_height);
                                }
                                break;
                        }

                        case WID_DPI_INFOPANEL: {
                                Rect ir = r.Shrink(WidgetDimensions::scaled.framerect);

                                if (this->selected_type == INVALID_INDUSTRYTYPE) {
                                        DrawStringMultiLine(ir, STR_FUND_INDUSTRY_MANY_RANDOM_INDUSTRIES_TOOLTIP);
                                        break;
                                }

                                const IndustrySpec *indsp = GetIndustrySpec(this->selected_type);

                                if (_game_mode != GM_EDITOR) {
                                        SetDParam(0, indsp->GetConstructionCost());
                                        DrawString(ir, STR_FUND_INDUSTRY_INDUSTRY_BUILD_COST);
                                        ir.top += GetCharacterHeight(FS_NORMAL);
                                }

                                CargoSuffix cargo_suffix[std::tuple_size_v<decltype(indsp->accepts_cargo)>];

                                /* Draw the accepted cargoes, if any. Otherwise, will print "Nothing". */
                                GetAllCargoSuffixes(CARGOSUFFIX_IN, CST_FUND, nullptr, this->selected_type, indsp, indsp->accepts_cargo, cargo_suffix);
                                std::string cargostring = this->MakeCargoListString(indsp->accepts_cargo, cargo_suffix, STR_INDUSTRY_VIEW_REQUIRES_N_CARGO);
                                ir.top = DrawStringMultiLine(ir, cargostring);

                                /* Draw the produced cargoes, if any. Otherwise, will print "Nothing". */
                                GetAllCargoSuffixes(CARGOSUFFIX_OUT, CST_FUND, nullptr, this->selected_type, indsp, indsp->produced_cargo, cargo_suffix);
                                cargostring = this->MakeCargoListString(indsp->produced_cargo, cargo_suffix, STR_INDUSTRY_VIEW_PRODUCES_N_CARGO);
                                ir.top = DrawStringMultiLine(ir, cargostring);

                                /* Get the additional purchase info text, if it has not already been queried. */
                                if (HasBit(indsp->callback_mask, CBM_IND_FUND_MORE_TEXT)) {
                                        uint16_t callback_res = GetIndustryCallback(CBID_INDUSTRY_FUND_MORE_TEXT, 0, 0, nullptr, this->selected_type, INVALID_TILE);
                                        if (callback_res != CALLBACK_FAILED && callback_res != 0x400) {
                                                if (callback_res > 0x400) {
                                                        ErrorUnknownCallbackResult(indsp->grf_prop.grffile->grfid, CBID_INDUSTRY_FUND_MORE_TEXT, callback_res);
                                                } else {
                                                        StringID str = GetGRFStringID(indsp->grf_prop.grffile->grfid, 0xD000 + callback_res);  // No. here's the new string
                                                        if (str != STR_UNDEFINED) {
                                                                StartTextRefStackUsage(indsp->grf_prop.grffile, 6);
                                                                DrawStringMultiLine(ir, str, TC_YELLOW);
                                                                StopTextRefStackUsage();
                                                        }
                                                }
                                        }
                                }
                                break;
                        }
                }
        }

        static void AskManyRandomIndustriesCallback(Window *, bool confirmed)
        {
                if (!confirmed) return;

                if (Town::GetNumItems() == 0) {
                        ShowErrorMessage(STR_ERROR_CAN_T_GENERATE_INDUSTRIES, STR_ERROR_MUST_FOUND_TOWN_FIRST, WL_INFO);
                } else {
                        Backup<bool> old_generating_world(_generating_world, true);
                        BasePersistentStorageArray::SwitchMode(PSM_ENTER_GAMELOOP);
                        GenerateIndustries();
                        BasePersistentStorageArray::SwitchMode(PSM_LEAVE_GAMELOOP);
                        old_generating_world.Restore();
                }
        }

        static void AskRemoveAllIndustriesCallback(Window *, bool confirmed)
        {
                if (!confirmed) return;

                for (Industry *industry : Industry::Iterate()) delete industry;

                /* Clear farmland. */
                for (TileIndex tile = 0; tile < Map::Size(); tile++) {
                        if (IsTileType(tile, MP_CLEAR) && GetRawClearGround(tile) == CLEAR_FIELDS) {
                                MakeClear(tile, CLEAR_GRASS, 3);
                        }
                }

                MarkWholeScreenDirty();
        }

        void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
        {
                switch (widget) {
                        case WID_DPI_CREATE_RANDOM_INDUSTRIES_WIDGET: {
                                assert(_game_mode == GM_EDITOR);
                                this->HandleButtonClick(WID_DPI_CREATE_RANDOM_INDUSTRIES_WIDGET);
                                ShowQuery(STR_FUND_INDUSTRY_MANY_RANDOM_INDUSTRIES_CAPTION, STR_FUND_INDUSTRY_MANY_RANDOM_INDUSTRIES_QUERY, nullptr, AskManyRandomIndustriesCallback);
                                break;
                        }

                        case WID_DPI_REMOVE_ALL_INDUSTRIES_WIDGET: {
                                assert(_game_mode == GM_EDITOR);
                                this->HandleButtonClick(WID_DPI_REMOVE_ALL_INDUSTRIES_WIDGET);
                                ShowQuery(STR_FUND_INDUSTRY_REMOVE_ALL_INDUSTRIES_CAPTION, STR_FUND_INDUSTRY_REMOVE_ALL_INDUSTRIES_QUERY, nullptr, AskRemoveAllIndustriesCallback);
                                break;
                        }

                        case WID_DPI_MATRIX_WIDGET: {
                                auto it = this->vscroll->GetScrolledItemFromWidget(this->list, pt.y, this, WID_DPI_MATRIX_WIDGET);
                                if (it != this->list.end()) { // Is it within the boundaries of available data?
                                        this->selected_type = *it;
                                        this->UpdateAvailability();

                                        const IndustrySpec *indsp = GetIndustrySpec(this->selected_type);

                                        this->SetDirty();

                                        if (_thd.GetCallbackWnd() == this &&
                                                        ((_game_mode != GM_EDITOR && _settings_game.construction.raw_industry_construction == 2 && indsp != nullptr && indsp->IsRawIndustry()) || !this->enabled)) {
                                                /* Reset the button state if going to prospecting or "build many industries" */
                                                this->RaiseButtons();
                                                ResetObjectToPlace();
                                        }

                                        this->SetButtons();
                                        if (this->enabled && click_count > 1) this->OnClick(pt, WID_DPI_FUND_WIDGET, 1);
                                }
                                break;
                        }

                        case WID_DPI_DISPLAY_WIDGET:
                                if (this->selected_type != INVALID_INDUSTRYTYPE) ShowIndustryCargoesWindow(this->selected_type);
                                break;

                        case WID_DPI_FUND_WIDGET: {
                                if (this->selected_type != INVALID_INDUSTRYTYPE) {
                                        if (_game_mode != GM_EDITOR && _settings_game.construction.raw_industry_construction == 2 && GetIndustrySpec(this->selected_type)->IsRawIndustry()) {
                                                Command<CMD_BUILD_INDUSTRY>::Post(STR_ERROR_CAN_T_CONSTRUCT_THIS_INDUSTRY, 0, this->selected_type, 0, false, InteractiveRandom());
                                                this->HandleButtonClick(WID_DPI_FUND_WIDGET);
                                        } else {
                                                HandlePlacePushButton(this, WID_DPI_FUND_WIDGET, SPR_CURSOR_INDUSTRY, HT_RECT);
                                        }
                                }
                                break;
                        }
                }
        }

        void OnResize() override
        {
                /* Adjust the number of items in the matrix depending of the resize */
                this->vscroll->SetCapacityFromWidget(this, WID_DPI_MATRIX_WIDGET);
        }

        void OnPlaceObject([[maybe_unused]] Point pt, TileIndex tile) override
        {
                bool success = true;
                /* We do not need to protect ourselves against "Random Many Industries" in this mode */
                const IndustrySpec *indsp = GetIndustrySpec(this->selected_type);
                uint32_t seed = InteractiveRandom();
                uint32_t layout_index = InteractiveRandomRange((uint32_t)indsp->layouts.size());

                if (_game_mode == GM_EDITOR) {
                        /* Show error if no town exists at all */
                        if (Town::GetNumItems() == 0) {
                                SetDParam(0, indsp->name);
                                ShowErrorMessage(STR_ERROR_CAN_T_BUILD_HERE, STR_ERROR_MUST_FOUND_TOWN_FIRST, WL_INFO, pt.x, pt.y);
                                return;
                        }

                        Backup<CompanyID> cur_company(_current_company, OWNER_NONE);
                        Backup<bool> old_generating_world(_generating_world, true);
                        _ignore_restrictions = true;

                        Command<CMD_BUILD_INDUSTRY>::Post(STR_ERROR_CAN_T_CONSTRUCT_THIS_INDUSTRY, &CcBuildIndustry, tile, this->selected_type, layout_index, false, seed);

                        cur_company.Restore();
                        old_generating_world.Restore();
                        _ignore_restrictions = false;
                } else {
                        success = Command<CMD_BUILD_INDUSTRY>::Post(STR_ERROR_CAN_T_CONSTRUCT_THIS_INDUSTRY, tile, this->selected_type, layout_index, false, seed);
                }

                /* If an industry has been built, just reset the cursor and the system */
                if (success && !_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
        }

        IntervalTimer<TimerWindow> update_interval = {std::chrono::seconds(3), [this](auto) {
                if (_game_mode == GM_EDITOR) return;
                if (this->selected_type == INVALID_INDUSTRYTYPE) return;

                bool enabled = this->enabled;
                this->UpdateAvailability();
                if (enabled != this->enabled) {
                        this->SetButtons();
                        this->SetDirty();
                }
        }};

        void OnTimeout() override
        {
                this->RaiseButtons();
        }

        void OnPlaceObjectAbort() override
        {
                this->RaiseButtons();
        }

        /**
         * 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.
         */
        void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
        {
                if (!gui_scope) return;
                this->SetupArrays();
                this->SetButtons();
                this->SetDirty();
        }
};

void ShowBuildIndustryWindow()
{
        if (_game_mode != GM_EDITOR && !Company::IsValidID(_local_company)) return;
        if (BringWindowToFrontById(WC_BUILD_INDUSTRY, 0)) return;
        new BuildIndustryWindow();
}

static void UpdateIndustryProduction(Industry *i);

static inline bool IsProductionAlterable(const Industry *i)
{
        const IndustrySpec *is = GetIndustrySpec(i->type);
        bool has_prod = std::any_of(std::begin(is->production_rate), std::end(is->production_rate), [](auto rate) { return rate != 0; });
        return ((_game_mode == GM_EDITOR || _cheats.setup_prod.value) &&
                        (has_prod || is->IsRawIndustry()) &&
                        !_networking);
}

class IndustryViewWindow : public Window
{
        /** Modes for changing production */
        enum Editability {
                EA_NONE,              ///< Not alterable
                EA_MULTIPLIER,        ///< Allow changing the production multiplier
                EA_RATE,              ///< Allow changing the production rates
        };

        /** Specific lines in the info panel */
        enum InfoLine {
                IL_NONE,              ///< No line
                IL_MULTIPLIER,        ///< Production multiplier
                IL_RATE1,             ///< Production rate of cargo 1
                IL_RATE2,             ///< Production rate of cargo 2
        };

        Dimension cargo_icon_size; ///< Largest cargo icon dimension.
        Editability editable;     ///< Mode for changing production
        InfoLine editbox_line;    ///< The line clicked to open the edit box
        InfoLine clicked_line;    ///< The line of the button that has been clicked
        uint8_t clicked_button;      ///< The button that has been clicked (to raise)
        int production_offset_y;  ///< The offset of the production texts/buttons
        int info_height;          ///< Height needed for the #WID_IV_INFO panel
        int cheat_line_height;    ///< Height of each line for the #WID_IV_INFO panel

public:
        IndustryViewWindow(WindowDesc &desc, WindowNumber window_number) : Window(desc)
        {
                this->flags |= WF_DISABLE_VP_SCROLL;
                this->editbox_line = IL_NONE;
                this->clicked_line = IL_NONE;
                this->clicked_button = 0;
                this->info_height = WidgetDimensions::scaled.framerect.Vertical() + 2 * GetCharacterHeight(FS_NORMAL); // Info panel has at least two lines text.

                this->InitNested(window_number);
                NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_IV_VIEWPORT);
                nvp->InitializeViewport(this, Industry::Get(window_number)->location.GetCenterTile(), ScaleZoomGUI(ZOOM_LVL_INDUSTRY));

                const Industry *i = Industry::Get(window_number);
                if (!i->IsCargoProduced()) this->DisableWidget(WID_IV_GRAPH);

                this->InvalidateData();
        }

        ~IndustryViewWindow()
        {
                CloseWindowById(WC_INDUSTRY_PRODUCTION, this->window_number, false);
        }

        void OnInit() override
        {
                /* This only used when the cheat to alter industry production is enabled */
                this->cheat_line_height = std::max(SETTING_BUTTON_HEIGHT + WidgetDimensions::scaled.vsep_normal, GetCharacterHeight(FS_NORMAL));
                this->cargo_icon_size = GetLargestCargoIconSize();
        }

        void OnPaint() override
        {
                this->DrawWidgets();

                if (this->IsShaded()) return; // Don't draw anything when the window is shaded.

                const Rect r = this->GetWidget<NWidgetBase>(WID_IV_INFO)->GetCurrentRect();
                int expected = this->DrawInfo(r);
                if (expected != r.bottom) {
                        this->info_height = expected - r.top + 1;
                        this->ReInit();
                        return;
                }
        }

        void DrawCargoIcon(const Rect &r, CargoID cid) const
        {
                bool rtl = _current_text_dir == TD_RTL;
                SpriteID icon = CargoSpec::Get(cid)->GetCargoIcon();
                Dimension d = GetSpriteSize(icon);
                Rect ir = r.WithWidth(this->cargo_icon_size.width, rtl).WithHeight(GetCharacterHeight(FS_NORMAL));
                DrawSprite(icon, PAL_NONE, CenterBounds(ir.left, ir.right, d.width), CenterBounds(ir.top, ir.bottom, this->cargo_icon_size.height));
        }

        /**
         * Draw the text in the #WID_IV_INFO panel.
         * @param r Rectangle of the panel.
         * @return Expected position of the bottom edge of the panel.
         */
        int DrawInfo(const Rect &r)
        {
                bool rtl = _current_text_dir == TD_RTL;
                Industry *i = Industry::Get(this->window_number);
                const IndustrySpec *ind = GetIndustrySpec(i->type);
                Rect ir = r.Shrink(WidgetDimensions::scaled.framerect);
                bool first = true;
                bool has_accept = false;

                if (i->prod_level == PRODLEVEL_CLOSURE) {
                        DrawString(ir, STR_INDUSTRY_VIEW_INDUSTRY_ANNOUNCED_CLOSURE);
                        ir.top += GetCharacterHeight(FS_NORMAL) + WidgetDimensions::scaled.vsep_wide;
                }

                const int label_indent = WidgetDimensions::scaled.hsep_normal + this->cargo_icon_size.width;
                bool stockpiling = HasBit(ind->callback_mask, CBM_IND_PRODUCTION_CARGO_ARRIVAL) || HasBit(ind->callback_mask, CBM_IND_PRODUCTION_256_TICKS);

                for (const auto &a : i->accepted) {
                        if (!IsValidCargoID(a.cargo)) continue;
                        has_accept = true;
                        if (first) {
                                DrawString(ir, STR_INDUSTRY_VIEW_REQUIRES);
                                ir.top += GetCharacterHeight(FS_NORMAL);
                                first = false;
                        }

                        DrawCargoIcon(ir, a.cargo);

                        CargoSuffix suffix;
                        GetCargoSuffix(CARGOSUFFIX_IN, CST_VIEW, i, i->type, ind, a.cargo, &a - i->accepted.data(), suffix);

                        SetDParam(0, CargoSpec::Get(a.cargo)->name);
                        SetDParam(1, a.cargo);
                        SetDParam(2, a.waiting);
                        SetDParamStr(3, "");
                        StringID str = STR_NULL;
                        switch (suffix.display) {
                                case CSD_CARGO_AMOUNT_TEXT:
                                        SetDParamStr(3, suffix.text);
                                        [[fallthrough]];
                                case CSD_CARGO_AMOUNT:
                                        str = stockpiling ? STR_INDUSTRY_VIEW_ACCEPT_CARGO_AMOUNT : STR_INDUSTRY_VIEW_ACCEPT_CARGO;
                                        break;

                                case CSD_CARGO_TEXT:
                                        SetDParamStr(3, suffix.text);
                                        [[fallthrough]];
                                case CSD_CARGO:
                                        str = STR_INDUSTRY_VIEW_ACCEPT_CARGO;
                                        break;

                                default:
                                        NOT_REACHED();
                        }
                        DrawString(ir.Indent(label_indent, rtl), str);
                        ir.top += GetCharacterHeight(FS_NORMAL);
                }

                int line_height = this->editable == EA_RATE ? this->cheat_line_height : GetCharacterHeight(FS_NORMAL);
                int text_y_offset = (line_height - GetCharacterHeight(FS_NORMAL)) / 2;
                int button_y_offset = (line_height - SETTING_BUTTON_HEIGHT) / 2;
                first = true;
                for (const auto &p : i->produced) {
                        if (!IsValidCargoID(p.cargo)) continue;
                        if (first) {
                                if (has_accept) ir.top += WidgetDimensions::scaled.vsep_wide;
                                DrawString(ir, TimerGameEconomy::UsingWallclockUnits() ? STR_INDUSTRY_VIEW_PRODUCTION_LAST_MINUTE_TITLE : STR_INDUSTRY_VIEW_PRODUCTION_LAST_MONTH_TITLE);
                                ir.top += GetCharacterHeight(FS_NORMAL);
                                if (this->editable == EA_RATE) this->production_offset_y = ir.top;
                                first = false;
                        }

                        DrawCargoIcon(ir, p.cargo);

                        CargoSuffix suffix;
                        GetCargoSuffix(CARGOSUFFIX_OUT, CST_VIEW, i, i->type, ind, p.cargo, &p - i->produced.data(), suffix);

                        SetDParam(0, p.cargo);
                        SetDParam(1, p.history[LAST_MONTH].production);
                        SetDParamStr(2, suffix.text);
                        SetDParam(3, ToPercent8(p.history[LAST_MONTH].PctTransported()));
                        DrawString(ir.Indent(label_indent + (this->editable == EA_RATE ? SETTING_BUTTON_WIDTH + WidgetDimensions::scaled.hsep_normal : 0), rtl).Translate(0, text_y_offset), STR_INDUSTRY_VIEW_TRANSPORTED);
                        /* Let's put out those buttons.. */
                        if (this->editable == EA_RATE) {
                                DrawArrowButtons(ir.Indent(label_indent, rtl).WithWidth(SETTING_BUTTON_WIDTH, rtl).left, ir.top + button_y_offset, COLOUR_YELLOW, (this->clicked_line == IL_RATE1 + (&p - i->produced.data())) ? this->clicked_button : 0,
                                                p.rate > 0, p.rate < 255);
                        }
                        ir.top += line_height;
                }

                /* Display production multiplier if editable */
                if (this->editable == EA_MULTIPLIER) {
                        line_height = this->cheat_line_height;
                        text_y_offset = (line_height - GetCharacterHeight(FS_NORMAL)) / 2;
                        button_y_offset = (line_height - SETTING_BUTTON_HEIGHT) / 2;
                        ir.top += WidgetDimensions::scaled.vsep_wide;
                        this->production_offset_y = ir.top;
                        SetDParam(0, RoundDivSU(i->prod_level * 100, PRODLEVEL_DEFAULT));
                        DrawString(ir.Indent(label_indent + SETTING_BUTTON_WIDTH + WidgetDimensions::scaled.hsep_normal, rtl).Translate(0, text_y_offset), STR_INDUSTRY_VIEW_PRODUCTION_LEVEL);
                        DrawArrowButtons(ir.Indent(label_indent, rtl).WithWidth(SETTING_BUTTON_WIDTH, rtl).left, ir.top + button_y_offset, COLOUR_YELLOW, (this->clicked_line == IL_MULTIPLIER) ? this->clicked_button : 0,
                                        i->prod_level > PRODLEVEL_MINIMUM, i->prod_level < PRODLEVEL_MAXIMUM);
                        ir.top += line_height;
                }

                /* Get the extra message for the GUI */
                if (HasBit(ind->callback_mask, CBM_IND_WINDOW_MORE_TEXT)) {
                        uint16_t callback_res = GetIndustryCallback(CBID_INDUSTRY_WINDOW_MORE_TEXT, 0, 0, i, i->type, i->location.tile);
                        if (callback_res != CALLBACK_FAILED && callback_res != 0x400) {
                                if (callback_res > 0x400) {
                                        ErrorUnknownCallbackResult(ind->grf_prop.grffile->grfid, CBID_INDUSTRY_WINDOW_MORE_TEXT, callback_res);
                                } else {
                                        StringID message = GetGRFStringID(ind->grf_prop.grffile->grfid, 0xD000 + callback_res);
                                        if (message != STR_NULL && message != STR_UNDEFINED) {
                                                ir.top += WidgetDimensions::scaled.vsep_wide;

                                                StartTextRefStackUsage(ind->grf_prop.grffile, 6);
                                                /* Use all the available space left from where we stand up to the
                                                 * end of the window. We ALSO enlarge the window if needed, so we
                                                 * can 'go' wild with the bottom of the window. */
                                                ir.top = DrawStringMultiLine(ir.left, ir.right, ir.top, UINT16_MAX, message, TC_BLACK);
                                                StopTextRefStackUsage();
                                        }
                                }
                        }
                }

                if (!i->text.empty()) {
                        SetDParamStr(0, i->text);
                        ir.top += WidgetDimensions::scaled.vsep_wide;
                        ir.top = DrawStringMultiLine(ir.left, ir.right, ir.top, UINT16_MAX, STR_JUST_RAW_STRING, TC_BLACK);
                }

                /* Return required bottom position, the last pixel row plus some padding. */
                return ir.top - 1 + WidgetDimensions::scaled.framerect.bottom;
        }

        void SetStringParameters(WidgetID widget) const override
        {
                if (widget == WID_IV_CAPTION) SetDParam(0, this->window_number);
        }

        void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
        {
                if (widget == WID_IV_INFO) size.height = this->info_height;
        }

        void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
        {
                switch (widget) {
                        case WID_IV_INFO: {
                                Industry *i = Industry::Get(this->window_number);
                                InfoLine line = IL_NONE;

                                switch (this->editable) {
                                        case EA_NONE: break;

                                        case EA_MULTIPLIER:
                                                if (IsInsideBS(pt.y, this->production_offset_y, this->cheat_line_height)) line = IL_MULTIPLIER;
                                                break;

                                        case EA_RATE:
                                                if (pt.y >= this->production_offset_y) {
                                                        int row = (pt.y - this->production_offset_y) / this->cheat_line_height;
                                                        for (auto itp = std::begin(i->produced); itp != std::end(i->produced); ++itp) {
                                                                if (!IsValidCargoID(itp->cargo)) continue;
                                                                row--;
                                                                if (row < 0) {
                                                                        line = (InfoLine)(IL_RATE1 + (itp - std::begin(i->produced)));
                                                                        break;
                                                                }
                                                        }
                                                }
                                                break;
                                }
                                if (line == IL_NONE) return;

                                bool rtl = _current_text_dir == TD_RTL;
                                Rect r = this->GetWidget<NWidgetBase>(widget)->GetCurrentRect().Shrink(WidgetDimensions::scaled.framerect).Indent(this->cargo_icon_size.width + WidgetDimensions::scaled.hsep_normal, rtl);

                                if (r.WithWidth(SETTING_BUTTON_WIDTH, rtl).Contains(pt)) {
                                        /* Clicked buttons, decrease or increase production */
                                        bool decrease = r.WithWidth(SETTING_BUTTON_WIDTH / 2, rtl).Contains(pt);
                                        switch (this->editable) {
                                                case EA_MULTIPLIER:
                                                        if (decrease) {
                                                                if (i->prod_level <= PRODLEVEL_MINIMUM) return;
                                                                i->prod_level = static_cast<uint8_t>(std::max<uint>(i->prod_level / 2, PRODLEVEL_MINIMUM));
                                                        } else {
                                                                if (i->prod_level >= PRODLEVEL_MAXIMUM) return;
                                                                i->prod_level = static_cast<uint8_t>(std::min<uint>(i->prod_level * 2, PRODLEVEL_MAXIMUM));
                                                        }
                                                        break;

                                                case EA_RATE:
                                                        if (decrease) {
                                                                if (i->produced[line - IL_RATE1].rate <= 0) return;
                                                                i->produced[line - IL_RATE1].rate = std::max(i->produced[line - IL_RATE1].rate / 2, 0);
                                                        } else {
                                                                if (i->produced[line - IL_RATE1].rate >= 255) return;
                                                                /* a zero production industry is unlikely to give anything but zero, so push it a little bit */
                                                                int new_prod = i->produced[line - IL_RATE1].rate == 0 ? 1 : i->produced[line - IL_RATE1].rate * 2;
                                                                i->produced[line - IL_RATE1].rate = ClampTo<uint8_t>(new_prod);
                                                        }
                                                        break;

                                                default: NOT_REACHED();
                                        }

                                        UpdateIndustryProduction(i);
                                        this->SetDirty();
                                        this->SetTimeout();
                                        this->clicked_line = line;
                                        this->clicked_button = (decrease ^ rtl) ? 1 : 2;
                                } else if (r.Indent(SETTING_BUTTON_WIDTH + WidgetDimensions::scaled.hsep_normal, rtl).Contains(pt)) {
                                        /* clicked the text */
                                        this->editbox_line = line;
                                        switch (this->editable) {
                                                case EA_MULTIPLIER:
                                                        SetDParam(0, RoundDivSU(i->prod_level * 100, PRODLEVEL_DEFAULT));
                                                        ShowQueryString(STR_JUST_INT, STR_CONFIG_GAME_PRODUCTION_LEVEL, 10, this, CS_ALPHANUMERAL, QSF_NONE);
                                                        break;

                                                case EA_RATE:
                                                        SetDParam(0, i->produced[line - IL_RATE1].rate * 8);
                                                        ShowQueryString(STR_JUST_INT, STR_CONFIG_GAME_PRODUCTION, 10, this, CS_ALPHANUMERAL, QSF_NONE);
                                                        break;

                                                default: NOT_REACHED();
                                        }
                                }
                                break;
                        }

                        case WID_IV_GOTO: {
                                Industry *i = Industry::Get(this->window_number);
                                if (_ctrl_pressed) {
                                        ShowExtraViewportWindow(i->location.GetCenterTile());
                                } else {
                                        ScrollMainWindowToTile(i->location.GetCenterTile());
                                }
                                break;
                        }

                        case WID_IV_DISPLAY: {
                                Industry *i = Industry::Get(this->window_number);
                                ShowIndustryCargoesWindow(i->type);
                                break;
                        }

                        case WID_IV_GRAPH:
                                ShowIndustryProductionGraph(this->window_number);
                                break;
                }
        }

        void OnTimeout() override
        {
                this->clicked_line = IL_NONE;
                this->clicked_button = 0;
                this->SetDirty();
        }

        void OnResize() override
        {
                if (this->viewport != nullptr) {
                        NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_IV_VIEWPORT);
                        nvp->UpdateViewportCoordinates(this);

                        ScrollWindowToTile(Industry::Get(this->window_number)->location.GetCenterTile(), this, true); // Re-center viewport.
                }
        }

        void OnMouseWheel(int wheel) override
        {
                if (_settings_client.gui.scrollwheel_scrolling != SWS_OFF) {
                        DoZoomInOutWindow(wheel < 0 ? ZOOM_IN : ZOOM_OUT, this);
                }
        }

        void OnQueryTextFinished(std::optional<std::string> str) override
        {
                if (!str.has_value() || str->empty()) return;

                Industry *i = Industry::Get(this->window_number);
                uint value = atoi(str->c_str());
                switch (this->editbox_line) {
                        case IL_NONE: NOT_REACHED();

                        case IL_MULTIPLIER:
                                i->prod_level = ClampU(RoundDivSU(value * PRODLEVEL_DEFAULT, 100), PRODLEVEL_MINIMUM, PRODLEVEL_MAXIMUM);
                                break;

                        default:
                                i->produced[this->editbox_line - IL_RATE1].rate = ClampU(RoundDivSU(value, 8), 0, 255);
                                break;
                }
                UpdateIndustryProduction(i);
                this->SetDirty();
        }

        /**
         * 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.
         */
        void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
        {
                if (!gui_scope) return;
                const Industry *i = Industry::Get(this->window_number);
                if (IsProductionAlterable(i)) {
                        const IndustrySpec *ind = GetIndustrySpec(i->type);
                        this->editable = ind->UsesOriginalEconomy() ? EA_MULTIPLIER : EA_RATE;
                } else {
                        this->editable = EA_NONE;
                }
        }

        bool IsNewGRFInspectable() const override
        {
                return ::IsNewGRFInspectable(GSF_INDUSTRIES, this->window_number);
        }

        void ShowNewGRFInspectWindow() const override
        {
                ::ShowNewGRFInspectWindow(GSF_INDUSTRIES, this->window_number);
        }
};

static void UpdateIndustryProduction(Industry *i)
{
        const IndustrySpec *indspec = GetIndustrySpec(i->type);
        if (indspec->UsesOriginalEconomy()) i->RecomputeProductionMultipliers();

        for (auto &p : i->produced) {
                if (IsValidCargoID(p.cargo)) {
                        p.history[LAST_MONTH].production = ScaleByCargoScale(8 * p.rate, false);
                }
        }
}

/** Widget definition of the view industry gui */
static constexpr NWidgetPart _nested_industry_view_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_CREAM),
                NWidget(WWT_CAPTION, COLOUR_CREAM, WID_IV_CAPTION), SetDataTip(STR_INDUSTRY_VIEW_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_PUSHIMGBTN, COLOUR_CREAM, WID_IV_GOTO), SetAspect(WidgetDimensions::ASPECT_LOCATION), SetDataTip(SPR_GOTO_LOCATION, STR_INDUSTRY_VIEW_LOCATION_TOOLTIP),
                NWidget(WWT_DEBUGBOX, COLOUR_CREAM),
                NWidget(WWT_SHADEBOX, COLOUR_CREAM),
                NWidget(WWT_DEFSIZEBOX, COLOUR_CREAM),
                NWidget(WWT_STICKYBOX, COLOUR_CREAM),
        EndContainer(),
        NWidget(WWT_PANEL, COLOUR_CREAM),
                NWidget(WWT_INSET, COLOUR_CREAM), SetPadding(2, 2, 2, 2),
                        NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_IV_VIEWPORT), SetMinimalSize(254, 86), SetFill(1, 0), SetResize(1, 1),
                EndContainer(),
        EndContainer(),
        NWidget(WWT_PANEL, COLOUR_CREAM, WID_IV_INFO), SetMinimalSize(260, 0), SetMinimalTextLines(2, WidgetDimensions::unscaled.framerect.Vertical()), SetResize(1, 0),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PUSHTXTBTN, COLOUR_CREAM, WID_IV_DISPLAY), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_INDUSTRY_DISPLAY_CHAIN, STR_INDUSTRY_DISPLAY_CHAIN_TOOLTIP),
                NWidget(WWT_PUSHTXTBTN, COLOUR_CREAM, WID_IV_GRAPH), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_INDUSTRY_VIEW_PRODUCTION_GRAPH, STR_INDUSTRY_VIEW_PRODUCTION_GRAPH_TOOLTIP),
                NWidget(WWT_RESIZEBOX, COLOUR_CREAM),
        EndContainer(),
};

/** Window definition of the view industry gui */
static WindowDesc _industry_view_desc(
        WDP_AUTO, "view_industry", 260, 120,
        WC_INDUSTRY_VIEW, WC_NONE,
        0,
        _nested_industry_view_widgets
);

void ShowIndustryViewWindow(int industry)
{
        AllocateWindowDescFront<IndustryViewWindow>(_industry_view_desc, industry);
}

/** Widget definition of the industry directory gui */
static constexpr NWidgetPart _nested_industry_directory_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
                NWidget(WWT_CAPTION, COLOUR_BROWN, WID_ID_CAPTION), SetDataTip(STR_INDUSTRY_DIRECTORY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_SHADEBOX, COLOUR_BROWN),
                NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
                NWidget(WWT_STICKYBOX, COLOUR_BROWN),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(NWID_VERTICAL),
                        NWidget(NWID_HORIZONTAL),
                                NWidget(WWT_TEXTBTN, COLOUR_BROWN, WID_ID_DROPDOWN_ORDER), SetDataTip(STR_BUTTON_SORT_BY, STR_TOOLTIP_SORT_ORDER),
                                NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_ID_DROPDOWN_CRITERIA), SetDataTip(STR_JUST_STRING, STR_TOOLTIP_SORT_CRITERIA),
                                NWidget(WWT_EDITBOX, COLOUR_BROWN, WID_ID_FILTER), SetFill(1, 0), SetResize(1, 0), SetDataTip(STR_LIST_FILTER_OSKTITLE, STR_LIST_FILTER_TOOLTIP),
                        EndContainer(),
                        NWidget(NWID_HORIZONTAL),
                                NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_ID_FILTER_BY_ACC_CARGO), SetMinimalSize(225, 12), SetFill(0, 1), SetDataTip(STR_INDUSTRY_DIRECTORY_ACCEPTED_CARGO_FILTER, STR_TOOLTIP_FILTER_CRITERIA),
                                NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_ID_FILTER_BY_PROD_CARGO), SetMinimalSize(225, 12), SetFill(0, 1), SetDataTip(STR_INDUSTRY_DIRECTORY_PRODUCED_CARGO_FILTER, STR_TOOLTIP_FILTER_CRITERIA),
                                NWidget(WWT_PANEL, COLOUR_BROWN), SetResize(1, 0), EndContainer(),
                        EndContainer(),
                        NWidget(WWT_PANEL, COLOUR_BROWN, WID_ID_INDUSTRY_LIST), SetDataTip(0x0, STR_INDUSTRY_DIRECTORY_LIST_CAPTION), SetResize(1, 1), SetScrollbar(WID_ID_VSCROLLBAR),
                        EndContainer(),
                EndContainer(),
                NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_ID_VSCROLLBAR),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(NWID_HSCROLLBAR, COLOUR_BROWN, WID_ID_HSCROLLBAR),
                NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
        EndContainer(),
};

typedef GUIList<const Industry *, const CargoID &, const std::pair<CargoID, CargoID> &> GUIIndustryList;

/** Cargo filter functions */
/**
 * Check whether an industry accepts and produces a certain cargo pair.
 * @param industry The industry whose cargoes will being checked.
 * @param cargoes The accepted and produced cargo pair to look for.
 * @return bool Whether the given cargoes accepted and produced by the industry.
 */
static bool CargoFilter(const Industry * const *industry, const std::pair<CargoID, CargoID> &cargoes)
{
        auto accepted_cargo = cargoes.first;
        auto produced_cargo = cargoes.second;

        bool accepted_cargo_matches;

        switch (accepted_cargo) {
                case CargoFilterCriteria::CF_ANY:
                        accepted_cargo_matches = true;
                        break;

                case CargoFilterCriteria::CF_NONE:
                        accepted_cargo_matches = !(*industry)->IsCargoAccepted();
                        break;

                default:
                        accepted_cargo_matches = (*industry)->IsCargoAccepted(accepted_cargo);
                        break;
        }

        bool produced_cargo_matches;

        switch (produced_cargo) {
                case CargoFilterCriteria::CF_ANY:
                        produced_cargo_matches = true;
                        break;

                case CargoFilterCriteria::CF_NONE:
                        produced_cargo_matches = !(*industry)->IsCargoProduced();
                        break;

                default:
                        produced_cargo_matches = (*industry)->IsCargoProduced(produced_cargo);
                        break;
        }

        return accepted_cargo_matches && produced_cargo_matches;
}

static GUIIndustryList::FilterFunction * const _industry_filter_funcs[] = { &CargoFilter };

/** Enum referring to the Hotkeys in the industry directory window */
enum IndustryDirectoryHotkeys {
        IDHK_FOCUS_FILTER_BOX, ///< Focus the filter box
};
/**
 * The list of industries.
 */
class IndustryDirectoryWindow : public Window {
protected:
        /* Runtime saved values */
        static Listing last_sorting;

        /* Constants for sorting industries */
        static inline const StringID sorter_names[] = {
                STR_SORT_BY_NAME,
                STR_SORT_BY_TYPE,
                STR_SORT_BY_PRODUCTION,
                STR_SORT_BY_TRANSPORTED,
        };
        static const std::initializer_list<GUIIndustryList::SortFunction * const> sorter_funcs;

        GUIIndustryList industries{IndustryDirectoryWindow::produced_cargo_filter};
        Scrollbar *vscroll;
        Scrollbar *hscroll;

        CargoID produced_cargo_filter_criteria;     ///< Selected produced cargo filter index
        CargoID accepted_cargo_filter_criteria;     ///< Selected accepted cargo filter index
        static CargoID produced_cargo_filter;

        const int MAX_FILTER_LENGTH = 16;           ///< The max length of the filter, in chars
        StringFilter string_filter;                 ///< Filter for industries
        QueryString industry_editbox;               ///< Filter editbox

        enum class SorterType : uint8_t {
                ByName,        ///< Sorter type to sort by name
                ByType,        ///< Sorter type to sort by type
                ByProduction,  ///< Sorter type to sort by production amount
                ByTransported, ///< Sorter type to sort by transported percentage
        };

        /**
         * Set produced cargo filter for the industry list.
         * @param cid The cargo to be set
         */
        void SetProducedCargoFilter(CargoID cid)
        {
                if (this->produced_cargo_filter_criteria != cid) {
                        this->produced_cargo_filter_criteria = cid;
                        /* deactivate filter if criteria is 'Show All', activate it otherwise */
                        bool is_filtering_necessary = this->produced_cargo_filter_criteria != CargoFilterCriteria::CF_ANY || this->accepted_cargo_filter_criteria != CargoFilterCriteria::CF_ANY;

                        this->industries.SetFilterState(is_filtering_necessary);
                        this->industries.SetFilterType(0);
                        this->industries.ForceRebuild();
                }
        }

        /**
         * Set accepted cargo filter for the industry list.
         * @param index The cargo to be set
         */
        void SetAcceptedCargoFilter(CargoID cid)
        {
                if (this->accepted_cargo_filter_criteria != cid) {
                        this->accepted_cargo_filter_criteria = cid;
                        /* deactivate filter if criteria is 'Show All', activate it otherwise */
                        bool is_filtering_necessary = this->produced_cargo_filter_criteria != CargoFilterCriteria::CF_ANY || this->accepted_cargo_filter_criteria != CargoFilterCriteria::CF_ANY;

                        this->industries.SetFilterState(is_filtering_necessary);
                        this->industries.SetFilterType(0);
                        this->industries.ForceRebuild();
                }
        }

        StringID GetCargoFilterLabel(CargoID cid) const
        {
                switch (cid) {
                        case CargoFilterCriteria::CF_ANY: return STR_INDUSTRY_DIRECTORY_FILTER_ALL_TYPES;
                        case CargoFilterCriteria::CF_NONE: return STR_INDUSTRY_DIRECTORY_FILTER_NONE;
                        default: return CargoSpec::Get(cid)->name;
                }
        }

        /**
         * Populate the filter list and set the cargo filter criteria.
         */
        void SetCargoFilterArray()
        {
                this->produced_cargo_filter_criteria = CargoFilterCriteria::CF_ANY;
                this->accepted_cargo_filter_criteria = CargoFilterCriteria::CF_ANY;

                this->industries.SetFilterFuncs(_industry_filter_funcs);

                bool is_filtering_necessary = this->produced_cargo_filter_criteria != CargoFilterCriteria::CF_ANY || this->accepted_cargo_filter_criteria != CargoFilterCriteria::CF_ANY;

                this->industries.SetFilterState(is_filtering_necessary);
        }

        /**
         * Get the width needed to draw the longest industry line.
         * @return Returns width of the longest industry line, including padding.
         */
        uint GetIndustryListWidth() const
        {
                uint width = 0;
                for (const Industry *i : this->industries) {
                        width = std::max(width, GetStringBoundingBox(this->GetIndustryString(i)).width);
                }
                return width + WidgetDimensions::scaled.framerect.Horizontal();
        }

        /** (Re)Build industries list */
        void BuildSortIndustriesList()
        {
                if (this->industries.NeedRebuild()) {
                        this->industries.clear();
                        this->industries.reserve(Industry::GetNumItems());

                        for (const Industry *i : Industry::Iterate()) {
                                if (this->string_filter.IsEmpty()) {
                                        this->industries.push_back(i);
                                        continue;
                                }
                                this->string_filter.ResetState();
                                this->string_filter.AddLine(i->GetCachedName());
                                if (this->string_filter.GetState()) this->industries.push_back(i);
                        }

                        this->industries.RebuildDone();

                        auto filter = std::make_pair(this->accepted_cargo_filter_criteria, this->produced_cargo_filter_criteria);

                        this->industries.Filter(filter);

                        this->hscroll->SetCount(this->GetIndustryListWidth());
                        this->vscroll->SetCount(this->industries.size()); // Update scrollbar as well.
                }

                IndustryDirectoryWindow::produced_cargo_filter = this->produced_cargo_filter_criteria;
                this->industries.Sort();

                this->SetDirty();
        }

        /**
         * Returns percents of cargo transported if industry produces this cargo, else -1
         *
         * @param i industry to check
         * @param id cargo slot
         * @return percents of cargo transported, or -1 if industry doesn't use this cargo slot
         */
        static inline int GetCargoTransportedPercentsIfValid(const Industry::ProducedCargo &p)
        {
                if (!IsValidCargoID(p.cargo)) return -1;
                return ToPercent8(p.history[LAST_MONTH].PctTransported());
        }

        /**
         * Returns value representing industry's transported cargo
         *  percentage for industry sorting
         *
         * @param i industry to check
         * @return value used for sorting
         */
        static int GetCargoTransportedSortValue(const Industry *i)
        {
                CargoID filter = IndustryDirectoryWindow::produced_cargo_filter;
                if (filter == CargoFilterCriteria::CF_NONE) return 0;

                int percentage = 0, produced_cargo_count = 0;
                for (const auto &p : i->produced) {
                        if (filter == CargoFilterCriteria::CF_ANY) {
                                int transported = GetCargoTransportedPercentsIfValid(p);
                                if (transported != -1) {
                                        produced_cargo_count++;
                                        percentage += transported;
                                }
                                if (produced_cargo_count == 0 && &p == &i->produced.back() && percentage == 0) {
                                        return transported;
                                }
                        } else if (filter == p.cargo) {
                                return GetCargoTransportedPercentsIfValid(p);
                        }
                }

                if (produced_cargo_count == 0) return percentage;
                return percentage / produced_cargo_count;
        }

        /** Sort industries by name */
        static bool IndustryNameSorter(const Industry * const &a, const Industry * const &b, const CargoID &)
        {
                int r = StrNaturalCompare(a->GetCachedName(), b->GetCachedName()); // Sort by name (natural sorting).
                if (r == 0) return a->index < b->index;
                return r < 0;
        }

        /** Sort industries by type and name */
        static bool IndustryTypeSorter(const Industry * const &a, const Industry * const &b, const CargoID &filter)
        {
                int it_a = 0;
                while (it_a != NUM_INDUSTRYTYPES && a->type != _sorted_industry_types[it_a]) it_a++;
                int it_b = 0;
                while (it_b != NUM_INDUSTRYTYPES && b->type != _sorted_industry_types[it_b]) it_b++;
                int r = it_a - it_b;
                return (r == 0) ? IndustryNameSorter(a, b, filter) : r < 0;
        }

        /** Sort industries by production and name */
        static bool IndustryProductionSorter(const Industry * const &a, const Industry * const &b, const CargoID &filter)
        {
                if (filter == CargoFilterCriteria::CF_NONE) return IndustryTypeSorter(a, b, filter);

                uint prod_a = 0, prod_b = 0;
                if (filter == CargoFilterCriteria::CF_ANY) {
                        for (const auto &pa : a->produced) {
                                if (IsValidCargoID(pa.cargo)) prod_a += pa.history[LAST_MONTH].production;
                        }
                        for (const auto &pb : b->produced) {
                                if (IsValidCargoID(pb.cargo)) prod_b += pb.history[LAST_MONTH].production;
                        }
                } else {
                        if (auto ita = a->GetCargoProduced(filter); ita != std::end(a->produced)) prod_a = ita->history[LAST_MONTH].production;
                        if (auto itb = b->GetCargoProduced(filter); itb != std::end(b->produced)) prod_b = itb->history[LAST_MONTH].production;
                }
                int r = prod_a - prod_b;

                return (r == 0) ? IndustryTypeSorter(a, b, filter) : r < 0;
        }

        /** Sort industries by transported cargo and name */
        static bool IndustryTransportedCargoSorter(const Industry * const &a, const Industry * const &b, const CargoID &filter)
        {
                int r = GetCargoTransportedSortValue(a) - GetCargoTransportedSortValue(b);
                return (r == 0) ? IndustryNameSorter(a, b, filter) : r < 0;
        }

        /**
         * Get the StringID to draw and set the appropriate DParams.
         * @param i the industry to get the StringID of.
         * @return the StringID.
         */
        StringID GetIndustryString(const Industry *i) const
        {
                const IndustrySpec *indsp = GetIndustrySpec(i->type);
                uint8_t p = 0;

                /* Industry name */
                SetDParam(p++, i->index);

                /* Get industry productions (CargoID, production, suffix, transported) */
                struct CargoInfo {
                        CargoID cargo_id; ///< Cargo ID.
                        uint16_t production; ///< Production last month.
                        uint transported; ///< Percent transported last month.
                        std::string suffix; ///< Cargo suffix.

                        CargoInfo(CargoID cargo_id, uint16_t production, uint transported, std::string &&suffix) : cargo_id(cargo_id), production(production), transported(transported), suffix(std::move(suffix)) {}
                };
                std::vector<CargoInfo> cargos;

                for (auto itp = std::begin(i->produced); itp != std::end(i->produced); ++itp) {
                        if (!IsValidCargoID(itp->cargo)) continue;
                        CargoSuffix cargo_suffix;
                        GetCargoSuffix(CARGOSUFFIX_OUT, CST_DIR, i, i->type, indsp, itp->cargo, itp - std::begin(i->produced), cargo_suffix);
                        cargos.emplace_back(itp->cargo, itp->history[LAST_MONTH].production, ToPercent8(itp->history[LAST_MONTH].PctTransported()), std::move(cargo_suffix.text));
                }

                switch (static_cast<IndustryDirectoryWindow::SorterType>(this->industries.SortType())) {
                        case IndustryDirectoryWindow::SorterType::ByName:
                        case IndustryDirectoryWindow::SorterType::ByType:
                        case IndustryDirectoryWindow::SorterType::ByProduction:
                                /* Sort by descending production, then descending transported */
                                std::sort(cargos.begin(), cargos.end(), [](const CargoInfo &a, const CargoInfo &b) {
                                        if (a.production != b.production) return a.production > b.production;
                                        return a.transported > b.transported;
                                });
                                break;

                        case IndustryDirectoryWindow::SorterType::ByTransported:
                                /* Sort by descending transported, then descending production */
                                std::sort(cargos.begin(), cargos.end(), [](const CargoInfo &a, const CargoInfo &b) {
                                        if (a.transported != b.transported) return a.transported > b.transported;
                                        return a.production > b.production;
                                });
                                break;
                }

                /* If the produced cargo filter is active then move the filtered cargo to the beginning of the list,
                 * because this is the one the player interested in, and that way it is not hidden in the 'n' more cargos */
                const CargoID cid = this->produced_cargo_filter_criteria;
                if (cid != CargoFilterCriteria::CF_ANY && cid != CargoFilterCriteria::CF_NONE) {
                        auto filtered_ci = std::find_if(cargos.begin(), cargos.end(), [cid](const CargoInfo &ci) -> bool {
                                return ci.cargo_id == cid;
                        });
                        if (filtered_ci != cargos.end()) {
                                std::rotate(cargos.begin(), filtered_ci, filtered_ci + 1);
                        }
                }

                /* Display first 3 cargos */
                for (size_t j = 0; j < std::min<size_t>(3, cargos.size()); j++) {
                        CargoInfo &ci = cargos[j];
                        SetDParam(p++, STR_INDUSTRY_DIRECTORY_ITEM_INFO);
                        SetDParam(p++, ci.cargo_id);
                        SetDParam(p++, ci.production);
                        SetDParamStr(p++, std::move(ci.suffix));
                        SetDParam(p++, ci.transported);
                }

                /* Undisplayed cargos if any */
                SetDParam(p++, cargos.size() - 3);

                /* Drawing the right string */
                switch (cargos.size()) {
                        case 0: return STR_INDUSTRY_DIRECTORY_ITEM_NOPROD;
                        case 1: return STR_INDUSTRY_DIRECTORY_ITEM_PROD1;
                        case 2: return STR_INDUSTRY_DIRECTORY_ITEM_PROD2;
                        case 3: return STR_INDUSTRY_DIRECTORY_ITEM_PROD3;
                        default: return STR_INDUSTRY_DIRECTORY_ITEM_PRODMORE;
                }
        }

public:
        IndustryDirectoryWindow(WindowDesc &desc, WindowNumber) : Window(desc), industry_editbox(MAX_FILTER_LENGTH * MAX_CHAR_LENGTH, MAX_FILTER_LENGTH)
        {
                this->CreateNestedTree();
                this->vscroll = this->GetScrollbar(WID_ID_VSCROLLBAR);
                this->hscroll = this->GetScrollbar(WID_ID_HSCROLLBAR);

                this->industries.SetListing(this->last_sorting);
                this->industries.SetSortFuncs(IndustryDirectoryWindow::sorter_funcs);
                this->industries.ForceRebuild();

                this->FinishInitNested(0);

                this->BuildSortIndustriesList();

                this->querystrings[WID_ID_FILTER] = &this->industry_editbox;
                this->industry_editbox.cancel_button = QueryString::ACTION_CLEAR;
        }

        ~IndustryDirectoryWindow()
        {
                this->last_sorting = this->industries.GetListing();
        }

        void OnInit() override
        {
                this->SetCargoFilterArray();
        }

        void SetStringParameters(WidgetID widget) const override
        {
                switch (widget) {
                        case WID_ID_CAPTION:
                                SetDParam(0, this->vscroll->GetCount());
                                SetDParam(1, Industry::GetNumItems());
                                break;

                        case WID_ID_DROPDOWN_CRITERIA:
                                SetDParam(0, IndustryDirectoryWindow::sorter_names[this->industries.SortType()]);
                                break;

                        case WID_ID_FILTER_BY_ACC_CARGO:
                                SetDParam(0, this->GetCargoFilterLabel(this->accepted_cargo_filter_criteria));
                                break;

                        case WID_ID_FILTER_BY_PROD_CARGO:
                                SetDParam(0, this->GetCargoFilterLabel(this->produced_cargo_filter_criteria));
                                break;
                }
        }

        void DrawWidget(const Rect &r, WidgetID widget) const override
        {
                switch (widget) {
                        case WID_ID_DROPDOWN_ORDER:
                                this->DrawSortButtonState(widget, this->industries.IsDescSortOrder() ? SBS_DOWN : SBS_UP);
                                break;

                        case WID_ID_INDUSTRY_LIST: {
                                Rect ir = r.Shrink(WidgetDimensions::scaled.framerect);

                                /* Setup a clipping rectangle... */
                                DrawPixelInfo tmp_dpi;
                                if (!FillDrawPixelInfo(&tmp_dpi, ir)) return;
                                /* ...but keep coordinates relative to the window. */
                                tmp_dpi.left += ir.left;
                                tmp_dpi.top += ir.top;

                                AutoRestoreBackup dpi_backup(_cur_dpi, &tmp_dpi);

                                ir = ScrollRect(ir, *this->hscroll, 1);

                                if (this->industries.empty()) {
                                        DrawString(ir, STR_INDUSTRY_DIRECTORY_NONE);
                                        break;
                                }
                                const CargoID acf_cid = this->accepted_cargo_filter_criteria;
                                auto [first, last] = this->vscroll->GetVisibleRangeIterators(this->industries);
                                for (auto it = first; it != last; ++it) {
                                        TextColour tc = TC_FROMSTRING;
                                        if (acf_cid != CargoFilterCriteria::CF_ANY && acf_cid != CargoFilterCriteria::CF_NONE) {
                                                Industry *ind = const_cast<Industry *>(*it);
                                                if (IndustryTemporarilyRefusesCargo(ind, acf_cid)) {
                                                        tc = TC_GREY | TC_FORCED;
                                                }
                                        }
                                        DrawString(ir, this->GetIndustryString(*it), tc);

                                        ir.top += this->resize.step_height;
                                }
                                break;
                        }
                }
        }

        void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
        {
                switch (widget) {
                        case WID_ID_DROPDOWN_ORDER: {
                                Dimension d = GetStringBoundingBox(this->GetWidget<NWidgetCore>(widget)->widget_data);
                                d.width += padding.width + Window::SortButtonWidth() * 2; // Doubled since the string is centred and it also looks better.
                                d.height += padding.height;
                                size = maxdim(size, d);
                                break;
                        }

                        case WID_ID_DROPDOWN_CRITERIA: {
                                Dimension d = GetStringListBoundingBox(IndustryDirectoryWindow::sorter_names);
                                d.width += padding.width;
                                d.height += padding.height;
                                size = maxdim(size, d);
                                break;
                        }

                        case WID_ID_INDUSTRY_LIST: {
                                Dimension d = GetStringBoundingBox(STR_INDUSTRY_DIRECTORY_NONE);
                                resize.height = d.height;
                                d.height *= 5;
                                d.width += padding.width;
                                d.height += padding.height;
                                size = maxdim(size, d);
                                break;
                        }
                }
        }

        DropDownList BuildCargoDropDownList() const
        {
                DropDownList list;

                /* Add item for disabling filtering. */
                list.push_back(MakeDropDownListStringItem(this->GetCargoFilterLabel(CargoFilterCriteria::CF_ANY), CargoFilterCriteria::CF_ANY));
                /* Add item for industries not producing anything, e.g. power plants */
                list.push_back(MakeDropDownListStringItem(this->GetCargoFilterLabel(CargoFilterCriteria::CF_NONE), CargoFilterCriteria::CF_NONE));

                /* Add cargos */
                Dimension d = GetLargestCargoIconSize();
                for (const CargoSpec *cs : _sorted_standard_cargo_specs) {
                        list.push_back(MakeDropDownListIconItem(d, cs->GetCargoIcon(), PAL_NONE, cs->name, cs->Index()));
                }

                return list;
        }

        void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
        {
                switch (widget) {
                        case WID_ID_DROPDOWN_ORDER:
                                this->industries.ToggleSortOrder();
                                this->SetDirty();
                                break;

                        case WID_ID_DROPDOWN_CRITERIA:
                                ShowDropDownMenu(this, IndustryDirectoryWindow::sorter_names, this->industries.SortType(), WID_ID_DROPDOWN_CRITERIA, 0, 0);
                                break;

                        case WID_ID_FILTER_BY_ACC_CARGO: // Cargo filter dropdown
                                ShowDropDownList(this, this->BuildCargoDropDownList(), this->accepted_cargo_filter_criteria, widget);
                                break;

                        case WID_ID_FILTER_BY_PROD_CARGO: // Cargo filter dropdown
                                ShowDropDownList(this, this->BuildCargoDropDownList(), this->produced_cargo_filter_criteria, widget);
                                break;

                        case WID_ID_INDUSTRY_LIST: {
                                auto it = this->vscroll->GetScrolledItemFromWidget(this->industries, pt.y, this, WID_ID_INDUSTRY_LIST, WidgetDimensions::scaled.framerect.top);
                                if (it != this->industries.end()) {
                                        if (_ctrl_pressed) {
                                                ShowExtraViewportWindow((*it)->location.tile);
                                        } else {
                                                ScrollMainWindowToTile((*it)->location.tile);
                                        }
                                }
                                break;
                        }
                }
        }

        void OnDropdownSelect(WidgetID widget, int index) override
        {
                switch (widget) {
                        case WID_ID_DROPDOWN_CRITERIA: {
                                if (this->industries.SortType() != index) {
                                        this->industries.SetSortType(index);
                                        this->BuildSortIndustriesList();
                                }
                                break;
                        }

                        case WID_ID_FILTER_BY_ACC_CARGO: {
                                this->SetAcceptedCargoFilter(index);
                                this->BuildSortIndustriesList();
                                break;
                        }

                        case WID_ID_FILTER_BY_PROD_CARGO: {
                                this->SetProducedCargoFilter(index);
                                this->BuildSortIndustriesList();
                                break;
                        }
                }
        }

        void OnResize() override
        {
                this->vscroll->SetCapacityFromWidget(this, WID_ID_INDUSTRY_LIST, WidgetDimensions::scaled.framerect.Vertical());
                this->hscroll->SetCapacityFromWidget(this, WID_ID_INDUSTRY_LIST, WidgetDimensions::scaled.framerect.Horizontal());
        }

        void OnEditboxChanged(WidgetID wid) override
        {
                if (wid == WID_ID_FILTER) {
                        this->string_filter.SetFilterTerm(this->industry_editbox.text.buf);
                        this->InvalidateData(IDIWD_FORCE_REBUILD);
                }
        }

        void OnPaint() override
        {
                if (this->industries.NeedRebuild()) this->BuildSortIndustriesList();
                this->DrawWidgets();
        }

        /** Rebuild the industry list on a regular interval. */
        IntervalTimer<TimerWindow> rebuild_interval = {std::chrono::seconds(3), [this](auto) {
                this->industries.ForceResort();
                this->BuildSortIndustriesList();
        }};

        /**
         * 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.
         */
        void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
        {
                switch (data) {
                        case IDIWD_FORCE_REBUILD:
                                /* This needs to be done in command-scope to enforce rebuilding before resorting invalid data */
                                this->industries.ForceRebuild();
                                break;

                        case IDIWD_PRODUCTION_CHANGE:
                                if (this->industries.SortType() == 2) this->industries.ForceResort();
                                break;

                        default:
                                this->industries.ForceResort();
                                break;
                }
        }

        EventState OnHotkey(int hotkey) override
        {
                switch (hotkey) {
                        case IDHK_FOCUS_FILTER_BOX:
                                this->SetFocusedWidget(WID_ID_FILTER);
                                SetFocusedWindow(this); // The user has asked to give focus to the text box, so make sure this window is focused.
                                break;
                        default:
                                return ES_NOT_HANDLED;
                }
                return ES_HANDLED;
        }

        static inline HotkeyList hotkeys {"industrydirectory", {
                Hotkey('F', "focus_filter_box", IDHK_FOCUS_FILTER_BOX),
        }};
};

Listing IndustryDirectoryWindow::last_sorting = {false, 0};

/* Available station sorting functions. */
const std::initializer_list<GUIIndustryList::SortFunction * const> IndustryDirectoryWindow::sorter_funcs = {
        &IndustryNameSorter,
        &IndustryTypeSorter,
        &IndustryProductionSorter,
        &IndustryTransportedCargoSorter
};

CargoID IndustryDirectoryWindow::produced_cargo_filter = CargoFilterCriteria::CF_ANY;


/** Window definition of the industry directory gui */
static WindowDesc _industry_directory_desc(
        WDP_AUTO, "list_industries", 428, 190,
        WC_INDUSTRY_DIRECTORY, WC_NONE,
        0,
        _nested_industry_directory_widgets,
        &IndustryDirectoryWindow::hotkeys
);

void ShowIndustryDirectory()
{
        AllocateWindowDescFront<IndustryDirectoryWindow>(_industry_directory_desc, 0);
}

/** Widgets of the industry cargoes window. */
static constexpr NWidgetPart _nested_industry_cargoes_widgets[] = {
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
                NWidget(WWT_CAPTION, COLOUR_BROWN, WID_IC_CAPTION), SetDataTip(STR_INDUSTRY_CARGOES_INDUSTRY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
                NWidget(WWT_SHADEBOX, COLOUR_BROWN),
                NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
                NWidget(WWT_STICKYBOX, COLOUR_BROWN),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_PANEL, COLOUR_BROWN, WID_IC_PANEL), SetResize(1, 10), SetScrollbar(WID_IC_SCROLLBAR), EndContainer(),
                NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_IC_SCROLLBAR),
        EndContainer(),
        NWidget(NWID_HORIZONTAL),
                NWidget(WWT_TEXTBTN, COLOUR_BROWN, WID_IC_NOTIFY),
                        SetDataTip(STR_INDUSTRY_CARGOES_NOTIFY_SMALLMAP, STR_INDUSTRY_CARGOES_NOTIFY_SMALLMAP_TOOLTIP),
                NWidget(WWT_PANEL, COLOUR_BROWN), SetFill(1, 0), SetResize(0, 0), EndContainer(),
                NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_IC_IND_DROPDOWN), SetFill(0, 0), SetResize(0, 0),
                                SetDataTip(STR_INDUSTRY_CARGOES_SELECT_INDUSTRY, STR_INDUSTRY_CARGOES_SELECT_INDUSTRY_TOOLTIP),
                NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_IC_CARGO_DROPDOWN), SetFill(0, 0), SetResize(0, 0),
                                SetDataTip(STR_INDUSTRY_CARGOES_SELECT_CARGO, STR_INDUSTRY_CARGOES_SELECT_CARGO_TOOLTIP),
                NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
        EndContainer(),
};

/** Window description for the industry cargoes window. */
static WindowDesc _industry_cargoes_desc(
        WDP_AUTO, "industry_cargoes", 300, 210,
        WC_INDUSTRY_CARGOES, WC_NONE,
        0,
        _nested_industry_cargoes_widgets
);

/** Available types of field. */
enum CargoesFieldType {
        CFT_EMPTY,       ///< Empty field.
        CFT_SMALL_EMPTY, ///< Empty small field (for the header).
        CFT_INDUSTRY,    ///< Display industry.
        CFT_CARGO,       ///< Display cargo connections.
        CFT_CARGO_LABEL, ///< Display cargo labels.
        CFT_HEADER,      ///< Header text.
};

static const uint MAX_CARGOES = 16; ///< Maximum number of cargoes carried in a #CFT_CARGO field in #CargoesField.

/** Data about a single field in the #IndustryCargoesWindow panel. */
struct CargoesField {
        static int vert_inter_industry_space;
        static int blob_distance;

        static Dimension legend;
        static Dimension cargo_border;
        static Dimension cargo_line;
        static Dimension cargo_space;
        static Dimension cargo_stub;

        static const int INDUSTRY_LINE_COLOUR;
        static const int CARGO_LINE_COLOUR;

        static int small_height, normal_height;
        static int cargo_field_width;
        static int industry_width;
        static uint max_cargoes;

        using Cargoes = uint16_t;
        static_assert(std::numeric_limits<Cargoes>::digits >= MAX_CARGOES);

        CargoesFieldType type; ///< Type of field.
        union {
                struct {
                        IndustryType ind_type;                 ///< Industry type (#NUM_INDUSTRYTYPES means 'houses').
                        CargoID other_produced[MAX_CARGOES];   ///< Cargoes produced but not used in this figure.
                        CargoID other_accepted[MAX_CARGOES];   ///< Cargoes accepted but not used in this figure.
                } industry; ///< Industry data (for #CFT_INDUSTRY).
                struct {
                        CargoID vertical_cargoes[MAX_CARGOES]; ///< Cargoes running from top to bottom (cargo ID or #INVALID_CARGO).
                        Cargoes supp_cargoes; ///< Cargoes in \c vertical_cargoes entering from the left.
                        Cargoes cust_cargoes; ///< Cargoes in \c vertical_cargoes leaving to the right.
                        uint8_t num_cargoes;                   ///< Number of cargoes.
                        uint8_t top_end;                       ///< Stop at the top of the vertical cargoes.
                        uint8_t bottom_end;                    ///< Stop at the bottom of the vertical cargoes.
                } cargo; ///< Cargo data (for #CFT_CARGO).
                struct {
                        CargoID cargoes[MAX_CARGOES];          ///< Cargoes to display (or #INVALID_CARGO).
                        bool left_align;                       ///< Align all cargo texts to the left (else align to the right).
                } cargo_label;   ///< Label data (for #CFT_CARGO_LABEL).
                StringID header; ///< Header text (for #CFT_HEADER).
        } u; // Data for each type.

        /**
         * Make one of the empty fields (#CFT_EMPTY or #CFT_SMALL_EMPTY).
         * @param type Type of empty field.
         */
        void MakeEmpty(CargoesFieldType type)
        {
                this->type = type;
        }

        /**
         * Make an industry type field.
         * @param ind_type Industry type (#NUM_INDUSTRYTYPES means 'houses').
         * @note #other_accepted and #other_produced should be filled later.
         */
        void MakeIndustry(IndustryType ind_type)
        {
                this->type = CFT_INDUSTRY;
                this->u.industry.ind_type = ind_type;
                std::fill(std::begin(this->u.industry.other_accepted), std::end(this->u.industry.other_accepted), INVALID_CARGO);
                std::fill(std::begin(this->u.industry.other_produced), std::end(this->u.industry.other_produced), INVALID_CARGO);
        }

        /**
         * Connect a cargo from an industry to the #CFT_CARGO column.
         * @param cargo Cargo to connect.
         * @param producer Cargo is produced (if \c false, cargo is assumed to be accepted).
         * @return Horizontal connection index, or \c -1 if not accepted at all.
         */
        int ConnectCargo(CargoID cargo, bool producer)
        {
                assert(this->type == CFT_CARGO);
                if (!IsValidCargoID(cargo)) return -1;

                /* Find the vertical cargo column carrying the cargo. */
                int column = -1;
                for (int i = 0; i < this->u.cargo.num_cargoes; i++) {
                        if (cargo == this->u.cargo.vertical_cargoes[i]) {
                                column = i;
                                break;
                        }
                }
                if (column < 0) return -1;

                if (producer) {
                        assert(!HasBit(this->u.cargo.supp_cargoes, column));
                        SetBit(this->u.cargo.supp_cargoes, column);
                } else {
                        assert(!HasBit(this->u.cargo.cust_cargoes, column));
                        SetBit(this->u.cargo.cust_cargoes, column);
                }
                return column;
        }

        /**
         * Does this #CFT_CARGO field have a horizontal connection?
         * @return \c true if a horizontal connection exists, \c false otherwise.
         */
        bool HasConnection()
        {
                assert(this->type == CFT_CARGO);

                return this->u.cargo.supp_cargoes != 0 || this->u.cargo.cust_cargoes != 0;
        }

        /**
         * Make a piece of cargo column.
         * @param cargoes Span of #CargoID (may contain #INVALID_CARGO).
         * @note #supp_cargoes and #cust_cargoes should be filled in later.
         */
        void MakeCargo(const std::span<const CargoID> cargoes)
        {
                this->type = CFT_CARGO;
                assert(std::size(cargoes) <= std::size(this->u.cargo.vertical_cargoes));
                auto insert = std::copy_if(std::begin(cargoes), std::end(cargoes), std::begin(this->u.cargo.vertical_cargoes), IsValidCargoID);
                this->u.cargo.num_cargoes = static_cast<uint8_t>(std::distance(std::begin(this->u.cargo.vertical_cargoes), insert));
                CargoIDComparator comparator;
                std::sort(std::begin(this->u.cargo.vertical_cargoes), insert, comparator);
                std::fill(insert, std::end(this->u.cargo.vertical_cargoes), INVALID_CARGO);
                this->u.cargo.top_end = false;
                this->u.cargo.bottom_end = false;
                this->u.cargo.supp_cargoes = 0;
                this->u.cargo.cust_cargoes = 0;
        }

        /**
         * Make a field displaying cargo type names.
         * @param cargoes    Span of #CargoID (may contain #INVALID_CARGO).
         * @param left_align ALign texts to the left (else to the right).
         */
        void MakeCargoLabel(const std::span<const CargoID> cargoes, bool left_align)
        {
                this->type = CFT_CARGO_LABEL;
                assert(std::size(cargoes) <= std::size(this->u.cargo_label.cargoes));
                auto insert = std::copy(std::begin(cargoes), std::end(cargoes), std::begin(this->u.cargo_label.cargoes));
                std::fill(insert, std::end(this->u.cargo_label.cargoes), INVALID_CARGO);
                this->u.cargo_label.left_align = left_align;
        }

        /**
         * Make a header above an industry column.
         * @param textid Text to display.
         */
        void MakeHeader(StringID textid)
        {
                this->type = CFT_HEADER;
                this->u.header = textid;
        }

        /**
         * For a #CFT_CARGO, compute the left position of the left-most vertical cargo connection.
         * @param xpos Left position of the field.
         * @return Left position of the left-most vertical cargo column.
         */
        int GetCargoBase(int xpos) const
        {
                assert(this->type == CFT_CARGO);
                int n = this->u.cargo.num_cargoes;

                return xpos + cargo_field_width / 2 - (CargoesField::cargo_line.width * n + CargoesField::cargo_space.width * (n - 1)) / 2;
        }

        /**
         * Draw the field.
         * @param xpos Position of the left edge.
         * @param ypos Position of the top edge.
         */
        void Draw(int xpos, int ypos) const
        {
                switch (this->type) {
                        case CFT_EMPTY:
                        case CFT_SMALL_EMPTY:
                                break;

                        case CFT_HEADER:
                                ypos += (small_height - GetCharacterHeight(FS_NORMAL)) / 2;
                                DrawString(xpos, xpos + industry_width, ypos, this->u.header, TC_WHITE, SA_HOR_CENTER);
                                break;

                        case CFT_INDUSTRY: {
                                int ypos1 = ypos + vert_inter_industry_space / 2;
                                int ypos2 = ypos + normal_height - 1 - vert_inter_industry_space / 2;
                                int xpos2 = xpos + industry_width - 1;
                                DrawRectOutline({xpos, ypos1, xpos2, ypos2}, INDUSTRY_LINE_COLOUR);
                                ypos += (normal_height - GetCharacterHeight(FS_NORMAL)) / 2;
                                if (this->u.industry.ind_type < NUM_INDUSTRYTYPES) {
                                        const IndustrySpec *indsp = GetIndustrySpec(this->u.industry.ind_type);
                                        DrawString(xpos, xpos2, ypos, indsp->name, TC_WHITE, SA_HOR_CENTER);

                                        /* Draw the industry legend. */
                                        int blob_left, blob_right;
                                        if (_current_text_dir == TD_RTL) {
                                                blob_right = xpos2 - blob_distance;
                                                blob_left  = blob_right - CargoesField::legend.width;
                                        } else {
                                                blob_left  = xpos + blob_distance;
                                                blob_right = blob_left + CargoesField::legend.width;
                                        }
                                        GfxFillRect(blob_left,     ypos2 - blob_distance - CargoesField::legend.height,     blob_right,     ypos2 - blob_distance,     PC_BLACK); // Border
                                        GfxFillRect(blob_left + 1, ypos2 - blob_distance - CargoesField::legend.height + 1, blob_right - 1, ypos2 - blob_distance - 1, indsp->map_colour);
                                } else {
                                        DrawString(xpos, xpos2, ypos, STR_INDUSTRY_CARGOES_HOUSES, TC_FROMSTRING, SA_HOR_CENTER);
                                }

                                /* Draw the other_produced/other_accepted cargoes. */
                                std::span<const CargoID> other_right, other_left;
                                if (_current_text_dir == TD_RTL) {
                                        other_right = this->u.industry.other_accepted;
                                        other_left  = this->u.industry.other_produced;
                                } else {
                                        other_right = this->u.industry.other_produced;
                                        other_left  = this->u.industry.other_accepted;
                                }
                                ypos1 += CargoesField::cargo_border.height + (GetCharacterHeight(FS_NORMAL) - CargoesField::cargo_line.height) / 2;
                                for (uint i = 0; i < CargoesField::max_cargoes; i++) {
                                        if (IsValidCargoID(other_right[i])) {
                                                const CargoSpec *csp = CargoSpec::Get(other_right[i]);
                                                int xp = xpos + industry_width + CargoesField::cargo_stub.width;
                                                DrawHorConnection(xpos + industry_width, xp - 1, ypos1, csp);
                                                GfxDrawLine(xp, ypos1, xp, ypos1 + CargoesField::cargo_line.height - 1, CARGO_LINE_COLOUR);
                                        }
                                        if (IsValidCargoID(other_left[i])) {
                                                const CargoSpec *csp = CargoSpec::Get(other_left[i]);
                                                int xp = xpos - CargoesField::cargo_stub.width;
                                                DrawHorConnection(xp + 1, xpos - 1, ypos1, csp);
                                                GfxDrawLine(xp, ypos1, xp, ypos1 + CargoesField::cargo_line.height - 1, CARGO_LINE_COLOUR);
                                        }
                                        ypos1 += GetCharacterHeight(FS_NORMAL) + CargoesField::cargo_space.height;
                                }
                                break;
                        }

                        case CFT_CARGO: {
                                int cargo_base = this->GetCargoBase(xpos);
                                int top = ypos + (this->u.cargo.top_end ? vert_inter_industry_space / 2 + 1 : 0);
                                int bot = ypos - (this->u.cargo.bottom_end ? vert_inter_industry_space / 2 + 1 : 0) + normal_height - 1;
                                int colpos = cargo_base;
                                for (int i = 0; i < this->u.cargo.num_cargoes; i++) {
                                        if (this->u.cargo.top_end) GfxDrawLine(colpos, top - 1, colpos + CargoesField::cargo_line.width - 1, top - 1, CARGO_LINE_COLOUR);
                                        if (this->u.cargo.bottom_end) GfxDrawLine(colpos, bot + 1, colpos + CargoesField::cargo_line.width - 1, bot + 1, CARGO_LINE_COLOUR);
                                        GfxDrawLine(colpos, top, colpos, bot, CARGO_LINE_COLOUR);
                                        colpos++;
                                        const CargoSpec *csp = CargoSpec::Get(this->u.cargo.vertical_cargoes[i]);
                                        GfxFillRect(colpos, top, colpos + CargoesField::cargo_line.width - 2, bot, csp->legend_colour, FILLRECT_OPAQUE);
                                        colpos += CargoesField::cargo_line.width - 2;
                                        GfxDrawLine(colpos, top, colpos, bot, CARGO_LINE_COLOUR);
                                        colpos += 1 + CargoesField::cargo_space.width;
                                }

                                Cargoes hor_left, hor_right;
                                if (_current_text_dir == TD_RTL) {
                                        hor_left  = this->u.cargo.cust_cargoes;
                                        hor_right = this->u.cargo.supp_cargoes;
                                } else {
                                        hor_left  = this->u.cargo.supp_cargoes;
                                        hor_right = this->u.cargo.cust_cargoes;
                                }
                                ypos += CargoesField::cargo_border.height + vert_inter_industry_space / 2 + (GetCharacterHeight(FS_NORMAL) - CargoesField::cargo_line.height) / 2;
                                for (uint i = 0; i < MAX_CARGOES; i++) {
                                        if (HasBit(hor_left, i)) {
                                                int col = i;
                                                int dx = 0;
                                                const CargoSpec *csp = CargoSpec::Get(this->u.cargo.vertical_cargoes[col]);
                                                for (; col > 0; col--) {
                                                        int lf = cargo_base + col * CargoesField::cargo_line.width + (col - 1) * CargoesField::cargo_space.width;
                                                        DrawHorConnection(lf, lf + CargoesField::cargo_space.width - dx, ypos, csp);
                                                        dx = 1;
                                                }
                                                DrawHorConnection(xpos, cargo_base - dx, ypos, csp);
                                        }
                                        if (HasBit(hor_right, i)) {
                                                int col = i;
                                                int dx = 0;
                                                const CargoSpec *csp = CargoSpec::Get(this->u.cargo.vertical_cargoes[col]);
                                                for (; col < this->u.cargo.num_cargoes - 1; col++) {
                                                        int lf = cargo_base + (col + 1) * CargoesField::cargo_line.width + col * CargoesField::cargo_space.width;
                                                        DrawHorConnection(lf + dx - 1, lf + CargoesField::cargo_space.width - 1, ypos, csp);
                                                        dx = 1;
                                                }
                                                DrawHorConnection(cargo_base + col * CargoesField::cargo_space.width + (col + 1) * CargoesField::cargo_line.width - 1 + dx, xpos + CargoesField::cargo_field_width - 1, ypos, csp);
                                        }
                                        ypos += GetCharacterHeight(FS_NORMAL) + CargoesField::cargo_space.height;
                                }
                                break;
                        }

                        case CFT_CARGO_LABEL:
                                ypos += CargoesField::cargo_border.height + vert_inter_industry_space / 2;
                                for (uint i = 0; i < MAX_CARGOES; i++) {
                                        if (IsValidCargoID(this->u.cargo_label.cargoes[i])) {
                                                const CargoSpec *csp = CargoSpec::Get(this->u.cargo_label.cargoes[i]);
                                                DrawString(xpos + WidgetDimensions::scaled.framerect.left, xpos + industry_width - 1 - WidgetDimensions::scaled.framerect.right, ypos, csp->name, TC_WHITE,
                                                                (this->u.cargo_label.left_align) ? SA_LEFT : SA_RIGHT);
                                        }
                                        ypos += GetCharacterHeight(FS_NORMAL) + CargoesField::cargo_space.height;
                                }
                                break;

                        default:
                                NOT_REACHED();
                }
        }

        /**
         * Decide which cargo was clicked at in a #CFT_CARGO field.
         * @param left  Left industry neighbour if available (else \c nullptr should be supplied).
         * @param right Right industry neighbour if available (else \c nullptr should be supplied).
         * @param pt    Click position in the cargo field.
         * @return Cargo clicked at, or #INVALID_CARGO if none.
         */
        CargoID CargoClickedAt(const CargoesField *left, const CargoesField *right, Point pt) const
        {
                assert(this->type == CFT_CARGO);

                /* Vertical matching. */
                int cpos = this->GetCargoBase(0);
                uint col;
                for (col = 0; col < this->u.cargo.num_cargoes; col++) {
                        if (pt.x < cpos) break;
                        if (pt.x < cpos + (int)CargoesField::cargo_line.width) return this->u.cargo.vertical_cargoes[col];
                        cpos += CargoesField::cargo_line.width + CargoesField::cargo_space.width;
                }
                /* col = 0 -> left of first col, 1 -> left of 2nd col, ... this->u.cargo.num_cargoes right of last-col. */

                int vpos = vert_inter_industry_space / 2 + CargoesField::cargo_border.width;
                uint row;
                for (row = 0; row < MAX_CARGOES; row++) {
                        if (pt.y < vpos) return INVALID_CARGO;
                        if (pt.y < vpos + GetCharacterHeight(FS_NORMAL)) break;
                        vpos += GetCharacterHeight(FS_NORMAL) + CargoesField::cargo_space.width;
                }
                if (row == MAX_CARGOES) return INVALID_CARGO;

                /* row = 0 -> at first horizontal row, row = 1 -> second horizontal row, 2 = 3rd horizontal row. */
                if (col == 0) {
                        if (HasBit(this->u.cargo.supp_cargoes, row)) return this->u.cargo.vertical_cargoes[row];
                        if (left != nullptr) {
                                if (left->type == CFT_INDUSTRY) return left->u.industry.other_produced[row];
                                if (left->type == CFT_CARGO_LABEL && !left->u.cargo_label.left_align) return left->u.cargo_label.cargoes[row];
                        }
                        return INVALID_CARGO;
                }
                if (col == this->u.cargo.num_cargoes) {
                        if (HasBit(this->u.cargo.cust_cargoes, row)) return this->u.cargo.vertical_cargoes[row];
                        if (right != nullptr) {
                                if (right->type == CFT_INDUSTRY) return right->u.industry.other_accepted[row];
                                if (right->type == CFT_CARGO_LABEL && right->u.cargo_label.left_align) return right->u.cargo_label.cargoes[row];
                        }
                        return INVALID_CARGO;
                }
                if (row >= col) {
                        /* Clicked somewhere in-between vertical cargo connection.
                         * Since the horizontal connection is made in the same order as the vertical list, the above condition
                         * ensures we are left-below the main diagonal, thus at the supplying side.
                         */
                        if (HasBit(this->u.cargo.supp_cargoes, row)) return this->u.cargo.vertical_cargoes[row];
                        return INVALID_CARGO;
                }
                /* Clicked at a customer connection. */
                if (HasBit(this->u.cargo.cust_cargoes, row)) return this->u.cargo.vertical_cargoes[row];
                return INVALID_CARGO;
        }

        /**
         * Decide what cargo the user clicked in the cargo label field.
         * @param pt Click position in the cargo label field.
         * @return Cargo clicked at, or #INVALID_CARGO if none.
         */
        CargoID CargoLabelClickedAt(Point pt) const
        {
                assert(this->type == CFT_CARGO_LABEL);

                int vpos = vert_inter_industry_space / 2 + CargoesField::cargo_border.height;
                uint row;
                for (row = 0; row < MAX_CARGOES; row++) {
                        if (pt.y < vpos) return INVALID_CARGO;
                        if (pt.y < vpos + GetCharacterHeight(FS_NORMAL)) break;
                        vpos += GetCharacterHeight(FS_NORMAL) + CargoesField::cargo_space.height;
                }
                if (row == MAX_CARGOES) return INVALID_CARGO;
                return this->u.cargo_label.cargoes[row];
        }

private:
        /**
         * Draw a horizontal cargo connection.
         * @param left  Left-most coordinate to draw.
         * @param right Right-most coordinate to draw.
         * @param top   Top coordinate of the cargo connection.
         * @param csp   Cargo to draw.
         */
        static void DrawHorConnection(int left, int right, int top, const CargoSpec *csp)
        {
                GfxDrawLine(left, top, right, top, CARGO_LINE_COLOUR);
                GfxFillRect(left, top + 1, right, top + CargoesField::cargo_line.height - 2, csp->legend_colour, FILLRECT_OPAQUE);
                GfxDrawLine(left, top + CargoesField::cargo_line.height - 1, right, top + CargoesField::cargo_line.height - 1, CARGO_LINE_COLOUR);
        }
};

static_assert(MAX_CARGOES >= std::tuple_size_v<decltype(IndustrySpec::produced_cargo)>);
static_assert(MAX_CARGOES >= std::tuple_size_v<decltype(IndustrySpec::accepts_cargo)>);

Dimension CargoesField::legend;       ///< Dimension of the legend blob.
Dimension CargoesField::cargo_border; ///< Dimensions of border between cargo lines and industry boxes.
Dimension CargoesField::cargo_line;   ///< Dimensions of cargo lines.
Dimension CargoesField::cargo_space;  ///< Dimensions of space between cargo lines.
Dimension CargoesField::cargo_stub;   ///< Dimensions of cargo stub (unconnected cargo line.)

int CargoesField::small_height;      ///< Height of the header row.
int CargoesField::normal_height;     ///< Height of the non-header rows.
int CargoesField::industry_width;    ///< Width of an industry field.
int CargoesField::cargo_field_width; ///< Width of a cargo field.
uint CargoesField::max_cargoes;      ///< Largest number of cargoes actually on any industry.
int CargoesField::vert_inter_industry_space; ///< Amount of space between two industries in a column.

int CargoesField::blob_distance; ///< Distance of the industry legend colour from the edge of the industry box.

const int CargoesField::INDUSTRY_LINE_COLOUR = PC_YELLOW; ///< Line colour of the industry type box.
const int CargoesField::CARGO_LINE_COLOUR    = PC_YELLOW; ///< Line colour around the cargo.

/** A single row of #CargoesField. */
struct CargoesRow {
        CargoesField columns[5]; ///< One row of fields.

        /**
         * Connect industry production cargoes to the cargo column after it.
         * @param column Column of the industry.
         */
        void ConnectIndustryProduced(int column)
        {
                CargoesField *ind_fld   = this->columns + column;
                CargoesField *cargo_fld = this->columns + column + 1;
                assert(ind_fld->type == CFT_INDUSTRY && cargo_fld->type == CFT_CARGO);

                std::fill(std::begin(ind_fld->u.industry.other_produced), std::end(ind_fld->u.industry.other_produced), INVALID_CARGO);

                if (ind_fld->u.industry.ind_type < NUM_INDUSTRYTYPES) {
                        CargoID others[MAX_CARGOES]; // Produced cargoes not carried in the cargo column.
                        int other_count = 0;

                        const IndustrySpec *indsp = GetIndustrySpec(ind_fld->u.industry.ind_type);
                        assert(CargoesField::max_cargoes <= std::size(indsp->produced_cargo));
                        for (uint i = 0; i < CargoesField::max_cargoes; i++) {
                                int col = cargo_fld->ConnectCargo(indsp->produced_cargo[i], true);
                                if (col < 0) others[other_count++] = indsp->produced_cargo[i];
                        }

                        /* Allocate other cargoes in the empty holes of the horizontal cargo connections. */
                        for (uint i = 0; i < CargoesField::max_cargoes && other_count > 0; i++) {
                                if (HasBit(cargo_fld->u.cargo.supp_cargoes, i)) ind_fld->u.industry.other_produced[i] = others[--other_count];
                        }
                } else {
                        /* Houses only display cargo that towns produce. */
                        for (uint i = 0; i < cargo_fld->u.cargo.num_cargoes; i++) {
                                CargoID cid = cargo_fld->u.cargo.vertical_cargoes[i];
                                TownProductionEffect tpe = CargoSpec::Get(cid)->town_production_effect;
                                if (tpe == TPE_PASSENGERS || tpe == TPE_MAIL) cargo_fld->ConnectCargo(cid, true);
                        }
                }
        }

        /**
         * Construct a #CFT_CARGO_LABEL field.
         * @param column    Column to create the new field.
         * @param accepting Display accepted cargo (if \c false, display produced cargo).
         */
        void MakeCargoLabel(int column, bool accepting)
        {
                CargoID cargoes[MAX_CARGOES];
                std::fill(std::begin(cargoes), std::end(cargoes), INVALID_CARGO);

                CargoesField *label_fld = this->columns + column;
                CargoesField *cargo_fld = this->columns + (accepting ? column - 1 : column + 1);

                assert(cargo_fld->type == CFT_CARGO && label_fld->type == CFT_EMPTY);
                for (uint i = 0; i < cargo_fld->u.cargo.num_cargoes; i++) {
                        int col = cargo_fld->ConnectCargo(cargo_fld->u.cargo.vertical_cargoes[i], !accepting);
                        if (col >= 0) cargoes[col] = cargo_fld->u.cargo.vertical_cargoes[i];
                }
                label_fld->MakeCargoLabel(cargoes, accepting);
        }


        /**
         * Connect industry accepted cargoes to the cargo column before it.
         * @param column Column of the industry.
         */
        void ConnectIndustryAccepted(int column)
        {
                CargoesField *ind_fld   = this->columns + column;
                CargoesField *cargo_fld = this->columns + column - 1;
                assert(ind_fld->type == CFT_INDUSTRY && cargo_fld->type == CFT_CARGO);

                std::fill(std::begin(ind_fld->u.industry.other_accepted), std::end(ind_fld->u.industry.other_accepted), INVALID_CARGO);

                if (ind_fld->u.industry.ind_type < NUM_INDUSTRYTYPES) {
                        CargoID others[MAX_CARGOES]; // Accepted cargoes not carried in the cargo column.
                        int other_count = 0;

                        const IndustrySpec *indsp = GetIndustrySpec(ind_fld->u.industry.ind_type);
                        assert(CargoesField::max_cargoes <= std::size(indsp->accepts_cargo));
                        for (uint i = 0; i < CargoesField::max_cargoes; i++) {
                                int col = cargo_fld->ConnectCargo(indsp->accepts_cargo[i], false);
                                if (col < 0) others[other_count++] = indsp->accepts_cargo[i];
                        }

                        /* Allocate other cargoes in the empty holes of the horizontal cargo connections. */
                        for (uint i = 0; i < CargoesField::max_cargoes && other_count > 0; i++) {
                                if (!HasBit(cargo_fld->u.cargo.cust_cargoes, i)) ind_fld->u.industry.other_accepted[i] = others[--other_count];
                        }
                } else {
                        /* Houses only display what is demanded. */
                        for (uint i = 0; i < cargo_fld->u.cargo.num_cargoes; i++) {
                                for (const auto &hs : HouseSpec::Specs()) {
                                        if (!hs.enabled) continue;

                                        for (uint j = 0; j < lengthof(hs.accepts_cargo); j++) {
                                                if (hs.cargo_acceptance[j] > 0 && cargo_fld->u.cargo.vertical_cargoes[i] == hs.accepts_cargo[j]) {
                                                        cargo_fld->ConnectCargo(cargo_fld->u.cargo.vertical_cargoes[i], false);
                                                        goto next_cargo;
                                                }
                                        }
                                }
next_cargo: ;
                        }
                }
        }
};


/**
 * Window displaying the cargo connections around an industry (or cargo).
 *
 * The main display is constructed from 'fields', rectangles that contain an industry, piece of the cargo connection, cargo labels, or headers.
 * For a nice display, the following should be kept in mind:
 * - A #CFT_HEADER is always at the top of an column of #CFT_INDUSTRY fields.
 * - A #CFT_CARGO_LABEL field is also always put in a column of #CFT_INDUSTRY fields.
 * - The top row contains #CFT_HEADER and #CFT_SMALL_EMPTY fields.
 * - Cargo connections have a column of their own (#CFT_CARGO fields).
 * - Cargo accepted or produced by an industry, but not carried in a cargo connection, is drawn in the space of a cargo column attached to the industry.
 *   The information however is part of the industry.
 *
 * This results in the following invariants:
 * - Width of a #CFT_INDUSTRY column is large enough to hold all industry type labels, all cargo labels, and all header texts.
 * - Height of a #CFT_INDUSTRY is large enough to hold a header line, or a industry type line, \c N cargo labels
 *   (where \c N is the maximum number of cargoes connected between industries), \c N connections of cargo types, and space
 *   between two industry types (1/2 above it, and 1/2 underneath it).
 * - Width of a cargo field (#CFT_CARGO) is large enough to hold \c N vertical columns (one for each type of cargo).
 *   Also, space is needed between an industry and the leftmost/rightmost column to draw the non-carried cargoes.
 * - Height of a #CFT_CARGO field is equally high as the height of the #CFT_INDUSTRY.
 * - A field at the top (#CFT_HEADER or #CFT_SMALL_EMPTY) match the width of the fields below them (#CFT_INDUSTRY respectively
 *   #CFT_CARGO), the height should be sufficient to display the header text.
 *
 * When displaying the cargoes around an industry type, five columns are needed (supplying industries, accepted cargoes, the industry,
 * produced cargoes, customer industries). Displaying the industries around a cargo needs three columns (supplying industries, the cargo,
 * customer industries). The remaining two columns are set to #CFT_EMPTY with a width equal to the average of a cargo and an industry column.
 */
struct IndustryCargoesWindow : public Window {
        typedef std::vector<CargoesRow> Fields;

        Fields fields;  ///< Fields to display in the #WID_IC_PANEL.
        uint ind_cargo; ///< If less than #NUM_INDUSTRYTYPES, an industry type, else a cargo id + NUM_INDUSTRYTYPES.
        Dimension cargo_textsize; ///< Size to hold any cargo text, as well as STR_INDUSTRY_CARGOES_SELECT_CARGO.
        Dimension ind_textsize;   ///< Size to hold any industry type text, as well as STR_INDUSTRY_CARGOES_SELECT_INDUSTRY.
        Scrollbar *vscroll;

        IndustryCargoesWindow(int id) : Window(_industry_cargoes_desc)
        {
                this->OnInit();
                this->CreateNestedTree();
                this->vscroll = this->GetScrollbar(WID_IC_SCROLLBAR);
                this->FinishInitNested(0);
                this->OnInvalidateData(id);
        }

        void OnInit() override
        {
                /* Initialize static CargoesField size variables. */
                Dimension d = GetStringBoundingBox(STR_INDUSTRY_CARGOES_PRODUCERS);
                d = maxdim(d, GetStringBoundingBox(STR_INDUSTRY_CARGOES_CUSTOMERS));
                d.width  += WidgetDimensions::scaled.frametext.Horizontal();
                d.height += WidgetDimensions::scaled.frametext.Vertical();
                CargoesField::small_height = d.height;

                /* Size of the legend blob -- slightly larger than the smallmap legend blob. */
                CargoesField::legend.height = GetCharacterHeight(FS_SMALL);
                CargoesField::legend.width = CargoesField::legend.height * 9 / 6;

                /* Size of cargo lines. */
                CargoesField::cargo_line.width = ScaleGUITrad(6);
                CargoesField::cargo_line.height = CargoesField::cargo_line.width;

                /* Size of border between cargo lines and industry boxes. */
                CargoesField::cargo_border.width = CargoesField::cargo_line.width * 3 / 2;
                CargoesField::cargo_border.height = CargoesField::cargo_line.width / 2;

                /* Size of space between cargo lines. */
                CargoesField::cargo_space.width = CargoesField::cargo_line.width / 2;
                CargoesField::cargo_space.height = CargoesField::cargo_line.height / 2;

                /* Size of cargo stub (unconnected cargo line.) */
                CargoesField::cargo_stub.width = CargoesField::cargo_line.width / 2;
                CargoesField::cargo_stub.height = CargoesField::cargo_line.height; /* Unused */

                CargoesField::vert_inter_industry_space = WidgetDimensions::scaled.vsep_wide;
                CargoesField::blob_distance = WidgetDimensions::scaled.hsep_normal;

                /* Decide about the size of the box holding the text of an industry type. */
                this->ind_textsize.width = 0;
                this->ind_textsize.height = 0;
                CargoesField::max_cargoes = 0;
                for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
                        const IndustrySpec *indsp = GetIndustrySpec(it);
                        if (!indsp->enabled) continue;
                        this->ind_textsize = maxdim(this->ind_textsize, GetStringBoundingBox(indsp->name));
                        CargoesField::max_cargoes = std::max<uint>(CargoesField::max_cargoes, std::count_if(std::begin(indsp->accepts_cargo), std::end(indsp->accepts_cargo), IsValidCargoID));
                        CargoesField::max_cargoes = std::max<uint>(CargoesField::max_cargoes, std::count_if(std::begin(indsp->produced_cargo), std::end(indsp->produced_cargo), IsValidCargoID));
                }
                d.width = std::max(d.width, this->ind_textsize.width);
                d.height = this->ind_textsize.height;
                this->ind_textsize = maxdim(this->ind_textsize, GetStringBoundingBox(STR_INDUSTRY_CARGOES_SELECT_INDUSTRY));

                /* Compute max size of the cargo texts. */
                this->cargo_textsize.width = 0;
                this->cargo_textsize.height = 0;
                for (const CargoSpec *csp : CargoSpec::Iterate()) {
                        if (!csp->IsValid()) continue;
                        this->cargo_textsize = maxdim(this->cargo_textsize, GetStringBoundingBox(csp->name));
                }
                d = maxdim(d, this->cargo_textsize); // Box must also be wide enough to hold any cargo label.
                this->cargo_textsize = maxdim(this->cargo_textsize, GetStringBoundingBox(STR_INDUSTRY_CARGOES_SELECT_CARGO));

                d.width += WidgetDimensions::scaled.frametext.Horizontal();
                /* Ensure the height is enough for the industry type text, for the horizontal connections, and for the cargo labels. */
                uint min_ind_height = CargoesField::cargo_border.height * 2 + CargoesField::max_cargoes * GetCharacterHeight(FS_NORMAL) + (CargoesField::max_cargoes - 1) * CargoesField::cargo_space.height;
                d.height = std::max(d.height + WidgetDimensions::scaled.frametext.Vertical(), min_ind_height);

                CargoesField::industry_width = d.width;
                CargoesField::normal_height = d.height + CargoesField::vert_inter_industry_space;

                /* Width of a #CFT_CARGO field. */
                CargoesField::cargo_field_width = CargoesField::cargo_border.width * 2 + CargoesField::cargo_line.width * CargoesField::max_cargoes + CargoesField::cargo_space.width * (CargoesField::max_cargoes - 1);
        }

        void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
        {
                switch (widget) {
                        case WID_IC_PANEL:
                                resize.height = CargoesField::normal_height;
                                size.width = CargoesField::industry_width * 3 + CargoesField::cargo_field_width * 2 + WidgetDimensions::scaled.frametext.Horizontal();
                                size.height = CargoesField::small_height + 2 * resize.height + WidgetDimensions::scaled.frametext.Vertical();
                                break;

                        case WID_IC_IND_DROPDOWN:
                                size.width = std::max(size.width, this->ind_textsize.width + padding.width);
                                break;

                        case WID_IC_CARGO_DROPDOWN:
                                size.width = std::max(size.width, this->cargo_textsize.width + padding.width);
                                break;
                }
        }

        void SetStringParameters(WidgetID widget) const override
        {
                if (widget != WID_IC_CAPTION) return;

                if (this->ind_cargo < NUM_INDUSTRYTYPES) {
                        const IndustrySpec *indsp = GetIndustrySpec(this->ind_cargo);
                        SetDParam(0, indsp->name);
                } else {
                        const CargoSpec *csp = CargoSpec::Get(this->ind_cargo - NUM_INDUSTRYTYPES);
                        SetDParam(0, csp->name);
                }
        }

        /**
         * Do the two sets of cargoes have a valid cargo in common?
         * @param cargoes1 Span of the first cargo list.
         * @param cargoes2 Span of the second cargo list.
         * @return Arrays have at least one valid cargo in common.
         */
        static bool HasCommonValidCargo(const std::span<const CargoID> cargoes1, const std::span<const CargoID> cargoes2)
        {
                for (const CargoID cid1 : cargoes1) {
                        if (!IsValidCargoID(cid1)) continue;
                        for (const CargoID cid2 : cargoes2) {
                                if (cid1 == cid2) return true;
                        }
                }
                return false;
        }

        /**
         * Can houses be used to supply one of the cargoes?
         * @param cargoes Span of cargo list.
         * @return Houses can supply at least one of the cargoes.
         */
        static bool HousesCanSupply(const std::span<const CargoID> cargoes)
        {
                for (const CargoID cid : cargoes) {
                        if (!IsValidCargoID(cid)) continue;
                        TownProductionEffect tpe = CargoSpec::Get(cid)->town_production_effect;
                        if (tpe == TPE_PASSENGERS || tpe == TPE_MAIL) return true;
                }
                return false;
        }

        /**
         * Can houses be used as customers of the produced cargoes?
         * @param cargoes Span of cargo list.
         * @return Houses can accept at least one of the cargoes.
         */
        static bool HousesCanAccept(const std::span<const CargoID> cargoes)
        {
                HouseZones climate_mask;
                switch (_settings_game.game_creation.landscape) {
                        case LT_TEMPERATE: climate_mask = HZ_TEMP; break;
                        case LT_ARCTIC:    climate_mask = HZ_SUBARTC_ABOVE | HZ_SUBARTC_BELOW; break;
                        case LT_TROPIC:    climate_mask = HZ_SUBTROPIC; break;
                        case LT_TOYLAND:   climate_mask = HZ_TOYLND; break;
                        default: NOT_REACHED();
                }
                for (const CargoID cid : cargoes) {
                        if (!IsValidCargoID(cid)) continue;

                        for (const auto &hs : HouseSpec::Specs()) {
                                if (!hs.enabled || !(hs.building_availability & climate_mask)) continue;

                                for (uint j = 0; j < lengthof(hs.accepts_cargo); j++) {
                                        if (hs.cargo_acceptance[j] > 0 && cid == hs.accepts_cargo[j]) return true;
                                }
                        }
                }
                return false;
        }

        /**
         * Count how many industries have accepted cargoes in common with one of the supplied set.
         * @param cargoes Cargoes to search.
         * @return Number of industries that have an accepted cargo in common with the supplied set.
         */
        static int CountMatchingAcceptingIndustries(const std::span<const CargoID> cargoes)
        {
                int count = 0;
                for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
                        const IndustrySpec *indsp = GetIndustrySpec(it);
                        if (!indsp->enabled) continue;

                        if (HasCommonValidCargo(cargoes, indsp->accepts_cargo)) count++;
                }
                return count;
        }

        /**
         * Count how many industries have produced cargoes in common with one of the supplied set.
         * @param cargoes Cargoes to search.
         * @return Number of industries that have a produced cargo in common with the supplied set.
         */
        static int CountMatchingProducingIndustries(const std::span<const CargoID> cargoes)
        {
                int count = 0;
                for (IndustryType it = 0; it < NUM_INDUSTRYTYPES; it++) {
                        const IndustrySpec *indsp = GetIndustrySpec(it);
                        if (!indsp->enabled) continue;

                        if (HasCommonValidCargo(cargoes, indsp->produced_cargo)) count++;
                }
                return count;
        }

        /**
         * Shorten the cargo column to just the part between industries.
         * @param column Column number of the cargo column.
         * @param top    Current top row.
         * @param bottom Current bottom row.
         */
        void ShortenCargoColumn(int column, int top, int bottom)
        {
                while (top < bottom && !this->fields[top].columns[column].HasConnection()) {
                        this->fields[top].columns[column].MakeEmpty(CFT_EMPTY);
                        top++;
                }
                this->fields[top].columns[column].u.cargo.top_end = true;

                while (bottom > top && !this->fields[bottom].columns[column].HasConnection()) {
                        this->fields[bottom].columns[column].MakeEmpty(CFT_EMPTY);
                        bottom--;
                }
                this->fields[bottom].columns[column].u.cargo.bottom_end = true;
        }

        /**
         * Place an industry in the fields.
         * @param row Row of the new industry.
         * @param col Column of the new industry.
         * @param it  Industry to place.
         */
        void PlaceIndustry(int row, int col, IndustryType it)
        {
                assert(this->fields[row].columns[col].type == CFT_EMPTY);
                this->fields[row].columns[col].MakeIndustry(it);
                if (col == 0) {
                        this->fields[row].ConnectIndustryProduced(col);
                } else {
                        this->fields[row].ConnectIndustryAccepted(col);
                }
        }

        /**
         * Notify smallmap that new displayed industries have been selected (in #_displayed_industries).
         */
        void NotifySmallmap()
        {
                if (!this->IsWidgetLowered(WID_IC_NOTIFY)) return;

                /* Only notify the smallmap window if it exists. In particular, do not
                 * bring it to the front to prevent messing up any nice layout of the user. */
                InvalidateWindowClassesData(WC_SMALLMAP, 0);
        }

        /**
         * Compute what and where to display for industry type \a it.
         * @param displayed_it Industry type to display.
         */
        void ComputeIndustryDisplay(IndustryType displayed_it)
        {
                this->GetWidget<NWidgetCore>(WID_IC_CAPTION)->widget_data = STR_INDUSTRY_CARGOES_INDUSTRY_CAPTION;
                this->ind_cargo = displayed_it;
                _displayed_industries.reset();
                _displayed_industries.set(displayed_it);

                this->fields.clear();
                CargoesRow &first_row = this->fields.emplace_back();
                first_row.columns[0].MakeHeader(STR_INDUSTRY_CARGOES_PRODUCERS);
                first_row.columns[1].MakeEmpty(CFT_SMALL_EMPTY);
                first_row.columns[2].MakeEmpty(CFT_SMALL_EMPTY);
                first_row.columns[3].MakeEmpty(CFT_SMALL_EMPTY);
                first_row.columns[4].MakeHeader(STR_INDUSTRY_CARGOES_CUSTOMERS);

                const IndustrySpec *central_sp = GetIndustrySpec(displayed_it);
                bool houses_supply = HousesCanSupply(central_sp->accepts_cargo);
                bool houses_accept = HousesCanAccept(central_sp->produced_cargo);
                /* Make a field consisting of two cargo columns. */
                int num_supp = CountMatchingProducingIndustries(central_sp->accepts_cargo) + houses_supply;
                int num_cust = CountMatchingAcceptingIndustries(central_sp->produced_cargo) + houses_accept;
                int num_indrows = std::max(3, std::max(num_supp, num_cust)); // One is needed for the 'it' industry, and 2 for the cargo labels.
                for (int i = 0; i < num_indrows; i++) {
                        CargoesRow &row = this->fields.emplace_back();
                        row.columns[0].MakeEmpty(CFT_EMPTY);
                        row.columns[1].MakeCargo(central_sp->accepts_cargo);
                        row.columns[2].MakeEmpty(CFT_EMPTY);
                        row.columns[3].MakeCargo(central_sp->produced_cargo);
                        row.columns[4].MakeEmpty(CFT_EMPTY);
                }
                /* Add central industry. */
                int central_row = 1 + num_indrows / 2;
                this->fields[central_row].columns[2].MakeIndustry(displayed_it);
                this->fields[central_row].ConnectIndustryProduced(2);
                this->fields[central_row].ConnectIndustryAccepted(2);

                /* Add cargo labels. */
                this->fields[central_row - 1].MakeCargoLabel(2, true);
                this->fields[central_row + 1].MakeCargoLabel(2, false);

                /* Add suppliers and customers of the 'it' industry. */
                int supp_count = 0;
                int cust_count = 0;
                for (IndustryType it : _sorted_industry_types) {
                        const IndustrySpec *indsp = GetIndustrySpec(it);
                        if (!indsp->enabled) continue;

                        if (HasCommonValidCargo(central_sp->accepts_cargo, indsp->produced_cargo)) {
                                this->PlaceIndustry(1 + supp_count * num_indrows / num_supp, 0, it);
                                _displayed_industries.set(it);
                                supp_count++;
                        }
                        if (HasCommonValidCargo(central_sp->produced_cargo, indsp->accepts_cargo)) {
                                this->PlaceIndustry(1 + cust_count * num_indrows / num_cust, 4, it);
                                _displayed_industries.set(it);
                                cust_count++;
                        }
                }
                if (houses_supply) {
                        this->PlaceIndustry(1 + supp_count * num_indrows / num_supp, 0, NUM_INDUSTRYTYPES);
                        supp_count++;
                }
                if (houses_accept) {
                        this->PlaceIndustry(1 + cust_count * num_indrows / num_cust, 4, NUM_INDUSTRYTYPES);
                        cust_count++;
                }

                this->ShortenCargoColumn(1, 1, num_indrows);
                this->ShortenCargoColumn(3, 1, num_indrows);
                this->vscroll->SetCount(num_indrows);
                this->SetDirty();
                this->NotifySmallmap();
        }

        /**
         * Compute what and where to display for cargo id \a cid.
         * @param cid Cargo id to display.
         */
        void ComputeCargoDisplay(CargoID cid)
        {
                this->GetWidget<NWidgetCore>(WID_IC_CAPTION)->widget_data = STR_INDUSTRY_CARGOES_CARGO_CAPTION;
                this->ind_cargo = cid + NUM_INDUSTRYTYPES;
                _displayed_industries.reset();

                this->fields.clear();
                CargoesRow &first_row = this->fields.emplace_back();
                first_row.columns[0].MakeHeader(STR_INDUSTRY_CARGOES_PRODUCERS);
                first_row.columns[1].MakeEmpty(CFT_SMALL_EMPTY);
                first_row.columns[2].MakeHeader(STR_INDUSTRY_CARGOES_CUSTOMERS);
                first_row.columns[3].MakeEmpty(CFT_SMALL_EMPTY);
                first_row.columns[4].MakeEmpty(CFT_SMALL_EMPTY);

                auto cargoes = std::span(&cid, 1);
                bool houses_supply = HousesCanSupply(cargoes);
                bool houses_accept = HousesCanAccept(cargoes);
                int num_supp = CountMatchingProducingIndustries(cargoes) + houses_supply + 1; // Ensure room for the cargo label.
                int num_cust = CountMatchingAcceptingIndustries(cargoes) + houses_accept;
                int num_indrows = std::max(num_supp, num_cust);
                for (int i = 0; i < num_indrows; i++) {
                        CargoesRow &row = this->fields.emplace_back();
                        row.columns[0].MakeEmpty(CFT_EMPTY);
                        row.columns[1].MakeCargo(cargoes);
                        row.columns[2].MakeEmpty(CFT_EMPTY);
                        row.columns[3].MakeEmpty(CFT_EMPTY);
                        row.columns[4].MakeEmpty(CFT_EMPTY);
                }

                this->fields[num_indrows].MakeCargoLabel(0, false); // Add cargo labels at the left bottom.

                /* Add suppliers and customers of the cargo. */
                int supp_count = 0;
                int cust_count = 0;
                for (IndustryType it : _sorted_industry_types) {
                        const IndustrySpec *indsp = GetIndustrySpec(it);
                        if (!indsp->enabled) continue;

                        if (HasCommonValidCargo(cargoes, indsp->produced_cargo)) {
                                this->PlaceIndustry(1 + supp_count * num_indrows / num_supp, 0, it);
                                _displayed_industries.set(it);
                                supp_count++;
                        }
                        if (HasCommonValidCargo(cargoes, indsp->accepts_cargo)) {
                                this->PlaceIndustry(1 + cust_count * num_indrows / num_cust, 2, it);
                                _displayed_industries.set(it);
                                cust_count++;
                        }
                }
                if (houses_supply) {
                        this->PlaceIndustry(1 + supp_count * num_indrows / num_supp, 0, NUM_INDUSTRYTYPES);
                        supp_count++;
                }
                if (houses_accept) {
                        this->PlaceIndustry(1 + cust_count * num_indrows / num_cust, 2, NUM_INDUSTRYTYPES);
                        cust_count++;
                }

                this->ShortenCargoColumn(1, 1, num_indrows);
                this->vscroll->SetCount(num_indrows);
                this->SetDirty();
                this->NotifySmallmap();
        }

        /**
         * Some data on this window has become invalid.
         * @param data Information about the changed data.
         * - data = 0 .. NUM_INDUSTRYTYPES - 1: Display the chain around the given industry.
         * - data = NUM_INDUSTRYTYPES: Stop sending updates to the smallmap window.
         * @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.
         */
        void OnInvalidateData([[maybe_unused]] int data = 0, [[maybe_unused]] bool gui_scope = true) override
        {
                if (!gui_scope) return;
                if (data == NUM_INDUSTRYTYPES) {
                        this->RaiseWidgetWhenLowered(WID_IC_NOTIFY);
                        return;
                }

                assert(data >= 0 && data < NUM_INDUSTRYTYPES);
                this->ComputeIndustryDisplay(data);
        }

        void DrawWidget(const Rect &r, WidgetID widget) const override
        {
                if (widget != WID_IC_PANEL) return;

                Rect ir = r.Shrink(WidgetDimensions::scaled.bevel);
                DrawPixelInfo tmp_dpi;
                if (!FillDrawPixelInfo(&tmp_dpi, ir)) return;
                AutoRestoreBackup dpi_backup(_cur_dpi, &tmp_dpi);

                int left_pos = WidgetDimensions::scaled.frametext.left - WidgetDimensions::scaled.bevel.left;
                if (this->ind_cargo >= NUM_INDUSTRYTYPES) left_pos += (CargoesField::industry_width + CargoesField::cargo_field_width) / 2;
                int last_column = (this->ind_cargo < NUM_INDUSTRYTYPES) ? 4 : 2;

                const NWidgetBase *nwp = this->GetWidget<NWidgetBase>(WID_IC_PANEL);
                int vpos = WidgetDimensions::scaled.frametext.top - WidgetDimensions::scaled.bevel.top - this->vscroll->GetPosition() * nwp->resize_y;
                int row_height = CargoesField::small_height;
                for (const auto &field : this->fields) {
                        if (vpos + row_height >= 0) {
                                int xpos = left_pos;
                                int col, dir;
                                if (_current_text_dir == TD_RTL) {
                                        col = last_column;
                                        dir = -1;
                                } else {
                                        col = 0;
                                        dir = 1;
                                }
                                while (col >= 0 && col <= last_column) {
                                        field.columns[col].Draw(xpos, vpos);
                                        xpos += (col & 1) ? CargoesField::cargo_field_width : CargoesField::industry_width;
                                        col += dir;
                                }
                        }
                        vpos += row_height;
                        if (vpos >= height) break;
                        row_height = CargoesField::normal_height;
                }
        }

        /**
         * Calculate in which field was clicked, and within the field, at what position.
         * @param pt Clicked position in the #WID_IC_PANEL widget.
         * @param fieldxy If \c true is returned, field x/y coordinate of \a pt.
         * @param xy      If \c true is returned, x/y coordinate with in the field.
         * @return Clicked at a valid position.
         */
        bool CalculatePositionInWidget(Point pt, Point *fieldxy, Point *xy)
        {
                const NWidgetBase *nw = this->GetWidget<NWidgetBase>(WID_IC_PANEL);
                pt.x -= nw->pos_x;
                pt.y -= nw->pos_y;

                int vpos = WidgetDimensions::scaled.frametext.top + CargoesField::small_height - this->vscroll->GetPosition() * nw->resize_y;
                if (pt.y < vpos) return false;

                int row = (pt.y - vpos) / CargoesField::normal_height; // row is relative to row 1.
                if (row + 1 >= (int)this->fields.size()) return false;
                vpos = pt.y - vpos - row * CargoesField::normal_height; // Position in the row + 1 field
                row++; // rebase row to match index of this->fields.

                int xpos = 2 * WidgetDimensions::scaled.frametext.left + ((this->ind_cargo < NUM_INDUSTRYTYPES) ? 0 :  (CargoesField::industry_width + CargoesField::cargo_field_width) / 2);
                if (pt.x < xpos) return false;
                int column;
                for (column = 0; column <= 5; column++) {
                        int width = (column & 1) ? CargoesField::cargo_field_width : CargoesField::industry_width;
                        if (pt.x < xpos + width) break;
                        xpos += width;
                }
                int num_columns = (this->ind_cargo < NUM_INDUSTRYTYPES) ? 4 : 2;
                if (column > num_columns) return false;
                xpos = pt.x - xpos;

                /* Return both positions, compensating for RTL languages (which works due to the equal symmetry in both displays). */
                fieldxy->y = row;
                xy->y = vpos;
                if (_current_text_dir == TD_RTL) {
                        fieldxy->x = num_columns - column;
                        xy->x = ((column & 1) ? CargoesField::cargo_field_width : CargoesField::industry_width) - xpos;
                } else {
                        fieldxy->x = column;
                        xy->x = xpos;
                }
                return true;
        }

        void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
        {
                switch (widget) {
                        case WID_IC_PANEL: {
                                Point fieldxy, xy;
                                if (!CalculatePositionInWidget(pt, &fieldxy, &xy)) return;

                                const CargoesField *fld = this->fields[fieldxy.y].columns + fieldxy.x;
                                switch (fld->type) {
                                        case CFT_INDUSTRY:
                                                if (fld->u.industry.ind_type < NUM_INDUSTRYTYPES) this->ComputeIndustryDisplay(fld->u.industry.ind_type);
                                                break;

                                        case CFT_CARGO: {
                                                CargoesField *lft = (fieldxy.x > 0) ? this->fields[fieldxy.y].columns + fieldxy.x - 1 : nullptr;
                                                CargoesField *rgt = (fieldxy.x < 4) ? this->fields[fieldxy.y].columns + fieldxy.x + 1 : nullptr;
                                                CargoID cid = fld->CargoClickedAt(lft, rgt, xy);
                                                if (IsValidCargoID(cid)) this->ComputeCargoDisplay(cid);
                                                break;
                                        }

                                        case CFT_CARGO_LABEL: {
                                                CargoID cid = fld->CargoLabelClickedAt(xy);
                                                if (IsValidCargoID(cid)) this->ComputeCargoDisplay(cid);
                                                break;
                                        }

                                        default:
                                                break;
                                }
                                break;
                        }

                        case WID_IC_NOTIFY:
                                this->ToggleWidgetLoweredState(WID_IC_NOTIFY);
                                this->SetWidgetDirty(WID_IC_NOTIFY);
                                if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);

                                if (this->IsWidgetLowered(WID_IC_NOTIFY)) {
                                        if (FindWindowByClass(WC_SMALLMAP) == nullptr) ShowSmallMap();
                                        this->NotifySmallmap();
                                }
                                break;

                        case WID_IC_CARGO_DROPDOWN: {
                                DropDownList lst;
                                Dimension d = GetLargestCargoIconSize();
                                for (const CargoSpec *cs : _sorted_standard_cargo_specs) {
                                        lst.push_back(MakeDropDownListIconItem(d, cs->GetCargoIcon(), PAL_NONE, cs->name, cs->Index()));
                                }
                                if (!lst.empty()) {
                                        int selected = (this->ind_cargo >= NUM_INDUSTRYTYPES) ? (int)(this->ind_cargo - NUM_INDUSTRYTYPES) : -1;
                                        ShowDropDownList(this, std::move(lst), selected, WID_IC_CARGO_DROPDOWN);
                                }
                                break;
                        }

                        case WID_IC_IND_DROPDOWN: {
                                DropDownList lst;
                                for (IndustryType ind : _sorted_industry_types) {
                                        const IndustrySpec *indsp = GetIndustrySpec(ind);
                                        if (!indsp->enabled) continue;
                                        lst.push_back(MakeDropDownListStringItem(indsp->name, ind));
                                }
                                if (!lst.empty()) {
                                        int selected = (this->ind_cargo < NUM_INDUSTRYTYPES) ? (int)this->ind_cargo : -1;
                                        ShowDropDownList(this, std::move(lst), selected, WID_IC_IND_DROPDOWN);
                                }
                                break;
                        }
                }
        }

        void OnDropdownSelect(WidgetID widget, int index) override
        {
                if (index < 0) return;

                switch (widget) {
                        case WID_IC_CARGO_DROPDOWN:
                                this->ComputeCargoDisplay(index);
                                break;

                        case WID_IC_IND_DROPDOWN:
                                this->ComputeIndustryDisplay(index);
                                break;
                }
        }

        bool OnTooltip([[maybe_unused]] Point pt, WidgetID widget, TooltipCloseCondition close_cond) override
        {
                if (widget != WID_IC_PANEL) return false;

                Point fieldxy, xy;
                if (!CalculatePositionInWidget(pt, &fieldxy, &xy)) return false;

                const CargoesField *fld = this->fields[fieldxy.y].columns + fieldxy.x;
                CargoID cid = INVALID_CARGO;
                switch (fld->type) {
                        case CFT_CARGO: {
                                CargoesField *lft = (fieldxy.x > 0) ? this->fields[fieldxy.y].columns + fieldxy.x - 1 : nullptr;
                                CargoesField *rgt = (fieldxy.x < 4) ? this->fields[fieldxy.y].columns + fieldxy.x + 1 : nullptr;
                                cid = fld->CargoClickedAt(lft, rgt, xy);
                                break;
                        }

                        case CFT_CARGO_LABEL: {
                                cid = fld->CargoLabelClickedAt(xy);
                                break;
                        }

                        case CFT_INDUSTRY:
                                if (fld->u.industry.ind_type < NUM_INDUSTRYTYPES && (this->ind_cargo >= NUM_INDUSTRYTYPES || fieldxy.x != 2)) {
                                        GuiShowTooltips(this, STR_INDUSTRY_CARGOES_INDUSTRY_TOOLTIP, close_cond);
                                }
                                return true;

                        default:
                                break;
                }
                if (IsValidCargoID(cid) && (this->ind_cargo < NUM_INDUSTRYTYPES || cid != this->ind_cargo - NUM_INDUSTRYTYPES)) {
                        const CargoSpec *csp = CargoSpec::Get(cid);
                        SetDParam(0, csp->name);
                        GuiShowTooltips(this, STR_INDUSTRY_CARGOES_CARGO_TOOLTIP, close_cond, 1);
                        return true;
                }

                return false;
        }

        void OnResize() override
        {
                this->vscroll->SetCapacityFromWidget(this, WID_IC_PANEL, WidgetDimensions::scaled.framerect.Vertical() + CargoesField::small_height);
        }
};

/**
 * Open the industry and cargoes window.
 * @param id Industry type to display, \c NUM_INDUSTRYTYPES selects a default industry type.
 */
static void ShowIndustryCargoesWindow(IndustryType id)
{
        if (id >= NUM_INDUSTRYTYPES) {
                for (IndustryType ind : _sorted_industry_types) {
                        const IndustrySpec *indsp = GetIndustrySpec(ind);
                        if (indsp->enabled) {
                                id = ind;
                                break;
                        }
                }
                if (id >= NUM_INDUSTRYTYPES) return;
        }

        Window *w = BringWindowToFrontById(WC_INDUSTRY_CARGOES, 0);
        if (w != nullptr) {
                w->InvalidateData(id);
                return;
        }
        new IndustryCargoesWindow(id);
}

/** Open the industry and cargoes window with an industry. */
void ShowIndustryCargoesWindow()
{
        ShowIndustryCargoesWindow(NUM_INDUSTRYTYPES);
}