preferences_dialog.cpp

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/*
    Copyright (C) 2016 - 2025
    by Charles Dang <exodia339gmail.com>
    Copyright (C) 2011, 2015 by Iris Morelle <shadowm2006@gmail.com>
    Part of the Battle for Wesnoth Project https://www.wesnoth.org/
 
    This program 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; either version 2 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY.
 
    See the COPYING file for more details.
*/
 
#define GETTEXT_DOMAIN "wesnoth-lib"
 
#include "gui/dialogs/preferences_dialog.hpp"
 
#include "display.hpp"
#include "events.hpp"
#include "filesystem.hpp"
#include "formatter.hpp"
#include "formula/string_utils.hpp"
#include "game_data.hpp"
#include "gettext.hpp"
#include "gui/core/gui_definition.hpp"
#include "hotkey/hotkey_item.hpp"
#include "lexical_cast.hpp"
#include "resources.hpp"
#include "sound.hpp"
#include "theme.hpp"
#include "video.hpp"
 
// Sub-dialog includes
#include "gui/dialogs/game_cache_options.hpp"
#include "gui/dialogs/hotkey_bind.hpp"
#include "gui/dialogs/log_settings.hpp"
#include "gui/dialogs/multiplayer/mp_alerts_options.hpp"
#include "gui/dialogs/select_orb_colors.hpp"
#include "gui/dialogs/reachmap_options.hpp"
#include "gui/dialogs/title_screen.hpp"
 
#include "gui/dialogs/game_version_dialog.hpp"
#include "gui/dialogs/message.hpp"
#include "gui/dialogs/transient_message.hpp"
#include "gui/widgets/button.hpp"
#include "gui/widgets/menu_button.hpp"
#include "gui/widgets/multimenu_button.hpp"
#include "gui/widgets/grid.hpp"
#include "gui/widgets/image.hpp"
#include "gui/widgets/label.hpp"
#include "gui/widgets/slider.hpp"
#include "gui/widgets/status_label_helper.hpp"
#include "gui/widgets/stacked_widget.hpp"
#include "gui/widgets/tab_container.hpp"
#include "gui/widgets/text_box.hpp"
#include "gui/widgets/toggle_button.hpp"
#include "gui/widgets/window.hpp"
 
#include "serialization/markup.hpp"
#include "wml_exception.hpp"
 
#include <functional>
#include <numeric>
 
namespace gui2::dialogs
{
namespace
{
template<typename W>
void disable_widget_on_toggle(window& window, widget& w, const std::string& id)
{
    window.find_widget<W>(id).set_active(dynamic_cast<selectable_item&>(w).get_value_bool());
}
 
template<typename W>
void disable_widget_on_toggle_inverted(window& window, widget& w, const std::string& id)
{
    window.find_widget<W>(id).set_active(!dynamic_cast<selectable_item&>(w).get_value_bool());
}
 
} // end anon namespace
 
REGISTER_DIALOG(preferences_dialog)
 
preferences_dialog::preferences_dialog(const pref_constants::PREFERENCE_VIEW initial_view)
    : modal_dialog(window_id())
    , resolutions_() // should be populated by set_resolution_list before use
    , themes_() // populated by set_theme_list
    , gui2_themes_() // populated by set_gui2_theme_list
    , last_selected_item_(0)
    , current_gui_theme_(0)
    , is_reload_needed_(false)
    , accl_speeds_({0.25, 0.5, 0.75, 1, 1.25, 1.5, 1.75, 2, 3, 4, 8, 16})
    , visible_hotkeys_()
    , visible_categories_()
    , initial_index_(pef_view_map[initial_view])
{
    initialize_callbacks();
}
 
// Helper function to refresh resolution list
void preferences_dialog::set_resolution_list(menu_button& res_list)
{
    resolutions_ = video::get_available_resolutions(true);
 
    std::vector<config> options;
    for(const point& res : resolutions_) {
        config option;
        option["label"] = formatter() << res.x << font::unicode_multiplication_sign << res.y;
 
        const int div = std::gcd(res.x, res.y);
        const int x_ratio = res.x / div;
        const int y_ratio = res.y / div;
 
        if(x_ratio <= 10 || y_ratio <= 10) {
            option["details"] = markup::span_color("#777777", "(", x_ratio, ':', y_ratio, ")");
        }
 
        options.push_back(std::move(option));
    }
 
    const unsigned current_res = std::distance(resolutions_.begin(), std::find(
        resolutions_.begin(), resolutions_.end(), video::current_resolution()));
 
    res_list.set_values(options, current_res);
}
 
void preferences_dialog::set_theme_list(menu_button& theme_list)
{
    themes_ = theme::get_basic_theme_info();
 
    std::vector<config> options;
    std::size_t current_theme = 0;
    for(std::size_t i = 0; i < themes_.size(); ++i) {
        options.emplace_back("label", themes_[i].name, "tooltip", themes_[i].description);
        if(themes_[i].id == prefs::get().theme()) {
            current_theme = i;
        }
    }
 
    theme_list.set_values(options, current_theme);
}
 
void preferences_dialog::set_gui2_theme_list(menu_button& theme_list)
{
    std::string current_gui_theme_name = prefs::get().gui2_theme();
 
    std::vector<config> options;
    bool theme_found = false;
    unsigned i = 0;
    for(auto& gui : guis) {
        gui2_themes_.emplace_back(gui.first);
        options.emplace_back("label", gui.second.description());
        if (current_gui_theme_name == gui.first) {
            current_gui_theme_ = i;
            theme_found = true;
        }
        if (!theme_found) {
            i++;
        }
    }
 
    theme_list.set_values(options);
    theme_list.set_selected(current_gui_theme_);
}
 
widget_data preferences_dialog::get_friends_list_row_data(const preferences::acquaintance& entry)
{
    widget_data data;
    widget_item item;
 
    std::string image = "friend.png";
    std::string descriptor = _("friend");
    std::string notes;
 
    if(entry.get_status() == "ignore") {
        image = "ignore.png";
        descriptor = _("ignored");
    }
 
    if(!entry.get_notes().empty()) {
        notes = " " + markup::tag("small", "(", entry.get_notes(), ")");
    }
 
    item["use_markup"] = "true";
 
    item["label"] = "misc/status-" + image;
    data.emplace("friend_icon", item);
 
    item["label"] = entry.get_nick() + notes;
    data.emplace("friend_name", item);
 
    item["label"] = markup::tag("small", descriptor);
    data.emplace("friend_status", item);
 
    return data;
}
 
void preferences_dialog::on_friends_list_select(listbox& list, text_box& textbox)
{
    const int num_friends = prefs::get().get_acquaintances().size();
    const int sel = list.get_selected_row();
 
    if(sel < 0 || sel >= num_friends) {
        return;
    }
 
    std::map<std::string, preferences::acquaintance>::const_iterator who = prefs::get().get_acquaintances().begin();
    std::advance(who, sel);
 
    textbox.set_value(who->second.get_nick() + " " + who->second.get_notes());
}
 
void preferences_dialog::update_friends_list_controls(listbox& list)
{
    const bool list_empty = list.get_item_count() == 0;
 
    if(!list_empty) {
        list.select_row(std::min(static_cast<int>(list.get_item_count()) - 1, list.get_selected_row()));
    }
 
    find_widget<button>("remove").set_active(!list_empty);
 
    find_widget<label>("no_friends_notice").set_visible(list_empty);
}
 
void preferences_dialog::add_friend_list_entry(const bool is_friend, text_box& textbox)
{
    std::string username = textbox.text();
    if(username.empty()) {
        gui2::show_transient_message("", _("No username specified"));
        return;
    }
 
    std::string reason;
 
    std::size_t pos = username.find_first_of(' ');
    if(pos != std::string::npos) {
        reason = username.substr(pos + 1);
        username = username.substr(0, pos);
    }
 
    auto [entry, added_new] = prefs::get().add_acquaintance(username, (is_friend ? "friend": "ignore"), reason);
 
    if(!entry) {
        gui2::show_transient_message(_("Error"), _("Invalid username"));
        return;
    }
 
    textbox.clear();
 
    listbox& list = find_widget<listbox>("friends_list");
 
    //
    // If this is a new entry, just add a new row. If it's not, we find the relevant
    // row, remove it, and add a new row with the updated data. Should probably come
    // up with a more elegant way to do .. the only reason I'm using the remove
    // -and-replace method is to prevent any issues with the widgets' layout sizes.
    //
    if(added_new) {
        list.add_row(get_friends_list_row_data(*entry));
    } else {
        for(unsigned i = 0; i < list.get_item_count(); ++i) {
            grid* row_grid = list.get_row_grid(i);
 
            if(row_grid->find_widget<label>("friend_name").get_label() == entry->get_nick()) {
                list.remove_row(i);
                list.add_row(get_friends_list_row_data(*entry), i);
 
                break;
            }
        }
    }
 
    update_friends_list_controls(list);
}
 
void preferences_dialog::remove_friend_list_entry(listbox& friends_list, text_box& textbox)
{
    const int selected_row = std::max(0, friends_list.get_selected_row());
 
    std::map<std::string, preferences::acquaintance>::const_iterator who = prefs::get().get_acquaintances().begin();
    std::advance(who, selected_row);
 
    const std::string to_remove = !textbox.text().empty() ? textbox.text() : who->second.get_nick();
 
    if(to_remove.empty()) {
        gui2::show_transient_message("", _("No username specified"));
        return;
    }
 
    if(!prefs::get().remove_acquaintance(to_remove)) {
        gui2::show_transient_error_message(_("Not on friends or ignore lists"));
        return;
    }
 
    textbox.clear();
 
    listbox& list = find_widget<listbox>("friends_list");
    list.remove_row(selected_row);
 
    update_friends_list_controls(list);
}
 
void preferences_dialog::apply_pixel_scale()
{
    // Update pixel scale preference.
    slider& ps_slider = find_widget<slider>("pixel_scale_slider");
    prefs::get().set_pixel_scale(ps_slider.get_value());
 
    // Update auto pixel scale preference.
    toggle_button& auto_ps_toggle =
        find_widget<toggle_button>("auto_pixel_scale");
    prefs::get().set_auto_pixel_scale(auto_ps_toggle.get_value_bool());
 
    // Update draw buffers, taking these into account.
    video::update_buffers();
 
    // Update game display, if active
    if(::display* disp = display::get_singleton()) {
        disp->queue_rerender();
    }
 
    // Raise a window resize event so we can react to the change
    events::raise_resize_event();
}
 
template<typename ToggleGet, typename ToggleSet, typename VolumeGet, typename VolumeSet>
void preferences_dialog::initialize_sound_option_group(
    const std::string& id_suffix,
    ToggleGet&& toggle_getter,
    ToggleSet&& toggle_setter,
    VolumeGet&& volume_getter,
    VolumeSet&& volume_setter)
{
    const std::string toggle_widget_id = "sound_toggle_" + id_suffix;
    const std::string volume_widget_id = "sound_volume_" + id_suffix;
 
    // Set up the volume slider.
    register_integer(volume_widget_id, true, volume_getter, volume_setter);
    auto& volume_slider = find_widget<slider>(volume_widget_id);
 
    // Callback to actually immediately apply the volume effect. field_integer doesn't
    // have a callback-on-changed mechanism. To add one would either mean adding it to
    // the base field class or make it a proper class of is own.
    connect_signal_notify_modified(volume_slider,
        [=](widget& w, auto&&...) {
            std::invoke(volume_setter, dynamic_cast<integer_selector&>(w).get_value());
        });
 
    const auto toggle_changed =
        [=, &volume_slider](widget& w) {
            const bool sound_enabled = dynamic_cast<selectable_item&>(w).get_value_bool();
            std::invoke(toggle_setter, sound_enabled); // FIXME: we should use this return value
            volume_slider.set_active(sound_enabled);
        };
 
    // Set up the toggle. We utilize field_bool's callback-on-changed mechanism instead
    // of manually registering the callback. Since we want the effects to apply immediately,
    // the callback the setter callback is duplicated in the on-change callback. The field
    // class could possibly use some reworking to make this less redundant, but for now it
    // works well enough.
    register_bool(toggle_widget_id, true, toggle_getter, toggle_setter, toggle_changed, true);
}
 
/**
 * Sets up states and callbacks for each of the widgets
 */
void preferences_dialog::initialize_callbacks()
{
    //
    // GENERAL PANEL
    //
 
    /* SCROLL SPEED */
    register_integer("scroll_speed", true,
        []() {return prefs::get().scroll_speed();},
        [](int v) {prefs::get().set_scroll_speed(v);});
 
    /* ACCELERATED SPEED */
    register_bool("turbo_toggle", true,
        []() {return prefs::get().turbo();},
        [](bool v) {prefs::get().set_turbo(v);});
 
    const auto accl_load = [this]()->int {
        return std::distance(accl_speeds_.begin(), std::find(accl_speeds_.begin(), accl_speeds_.end(), prefs::get().turbo_speed()));
    };
 
    const auto accl_save = [this](int i) {
        prefs::get().set_turbo_speed(accl_speeds_[i]);
    };
 
    register_integer("turbo_slider", true,
        accl_load, accl_save);
 
    // Set the value label transform function.
    find_widget<slider>("turbo_slider").set_value_labels(
        // TODO: this should probably be a locale dependent string (use comma/dot depending on language)
        [this](int pos, int /*max*/)->t_string { return lexical_cast<std::string>(accl_speeds_[pos]); }
    );
 
    /* SKIP AI MOVES */
    register_bool("skip_ai_moves", true,
        []() {return prefs::get().skip_ai_moves();},
        [](bool v) {prefs::get().set_skip_ai_moves(v);});
 
    /* DISABLE AUTO MOVES */
    register_bool("disable_auto_moves", true,
        []() {return prefs::get().disable_auto_moves();},
        [](bool v) {prefs::get().set_disable_auto_moves(v);});
 
    /* TURN DIALOG */
    register_bool("show_turn_dialog", true,
        []() {return prefs::get().turn_dialog();},
        [](bool v) {prefs::get().set_turn_dialog(v);});
 
    /* ENABLE PLANNING MODE */
    register_bool("whiteboard_on_start", true,
        []() {return prefs::get().enable_planning_mode_on_start();},
        [](bool v) {prefs::get().set_enable_planning_mode_on_start(v);});
 
    /* HIDE ALLY PLANS */
    register_bool("whiteboard_hide_allies", true,
        []() {return prefs::get().hide_whiteboard();},
        [](bool v) {prefs::get().set_hide_whiteboard(v);});
 
    /* INTERRUPT ON SIGHTING */
    register_bool("interrupt_move_when_ally_sighted", true,
        []() {return prefs::get().ally_sighted_interrupts();},
        [](bool v) {prefs::get().set_ally_sighted_interrupts(v);});
 
    /* SAVE REPLAYS */
    register_bool("save_replays", true,
        []() {return prefs::get().save_replays();},
        [](bool v) {prefs::get().set_save_replays(v);});
 
    /* DELETE AUTOSAVES */
    register_bool("delete_saves", true,
        []() {return prefs::get().delete_saves();},
        [](bool v) {prefs::get().set_delete_saves(v);});
 
    /* MAX AUTO SAVES */
    register_integer("max_saves_slider", true,
        []() {return prefs::get().auto_save_max();},
        [](int v) {prefs::get().set_auto_save_max(v);});
 
    /* CACHE MANAGE */
    connect_signal_mouse_left_click(find_widget<button>("cachemg"),
        [](auto&&...) { dialogs::game_cache_options::display(); });
 
    //
    // DISPLAY PANEL
    //
 
    /* FULLSCREEN TOGGLE */
    toggle_button& toggle_fullscreen = find_widget<toggle_button>("fullscreen");
    toggle_fullscreen.set_value(prefs::get().fullscreen());
#ifdef __ANDROID__
    toggle_fullscreen.set_active(false);
#endif
 
    // We bind a special callback function, so setup_single_toggle() is not used
    connect_signal_mouse_left_click(toggle_fullscreen,
        [this](auto&&...) { fullscreen_toggle_callback(); });
 
    /* SET RESOLUTION */
    menu_button& res_list = find_widget<menu_button>("resolution_set");
 
    res_list.set_use_markup(true);
#ifdef __ANDROID__
    res_list.set_active(false);
#else
    res_list.set_active(!prefs::get().fullscreen());
#endif
 
    set_resolution_list(res_list);
 
    connect_signal_notify_modified(res_list,
        [this](auto&&...) { handle_res_select(); });
 
    connect_signal<event::SDL_VIDEO_RESIZE>(
        [this, &res_list](auto&&...) { set_resolution_list(res_list); });
 
    // Toggling full-screen via hot-key by-passes fullscreen_toggle_callback()
    // So watch for the window actually entering/leaving full-screen to refresh
    // resolution list enablement and full-screen status
    connect_signal<event::SDL_WINDOW_ENTER_FULLSCREEN>(
        [this](auto&&...) { fullscreen_entered_callback(); });
 
    connect_signal<event::SDL_WINDOW_LEAVE_FULLSCREEN>(
        [this](auto&&...) { fullscreen_left_callback(); });
 
    /* PIXEL SCALE */
    register_integer("pixel_scale_slider", true,
        []() {return prefs::get().pixel_scale();},
        [](int v) {prefs::get().set_pixel_scale(v);});
 
    slider& ps_slider = find_widget<slider>("pixel_scale_slider");
    ps_slider.set_value_range(1, video::get_max_pixel_scale());
    connect_signal_mouse_left_release(ps_slider,
        [this](auto&&...) { apply_pixel_scale(); });
 
    /* AUTOMATIC PIXEL SCALE */
    register_bool("auto_pixel_scale", true,
        []() {return prefs::get().auto_pixel_scale();},
        [](bool v) {prefs::get().set_auto_pixel_scale(v);},
        [&](widget& w) { disable_widget_on_toggle_inverted<slider>(*this, w, "pixel_scale_slider"); }, true);
 
    if (video::get_max_pixel_scale() <= 1) {
        find_widget<slider>("pixel_scale_slider").set_active(false);
        find_widget<toggle_button>("auto_pixel_scale").set_active(false);
    }
 
    toggle_button& auto_ps_toggle =
        find_widget<toggle_button>("auto_pixel_scale");
    connect_signal_mouse_left_click(auto_ps_toggle,
        [this](auto&&...) { apply_pixel_scale(); });
 
    /* SHOW TIPS PANEL ON TITLESCREEN */
    register_bool("show_tips", true,
        []() {return prefs::get().show_tips();},
        [&](bool v) {
            // if changed once: different value, reload
            // if changed twice: double toggle, same value, don't reload
            is_reload_needed_ = !is_reload_needed_;
            prefs::get().set_show_tips(v);
        });
 
    /* SHOW FLOATING LABELS */
    register_bool("show_floating_labels", true,
        []() {return prefs::get().floating_labels();},
        [](bool v) {prefs::get().set_floating_labels(v);});
 
    /* SHOW TEAM COLORS */
    register_bool("show_ellipses", true,
        []() {return prefs::get().show_side_colors();},
        [](bool v) {prefs::get().set_show_side_colors(v);});
 
    /* SHOW GRID */
    register_bool("show_grid", true,
        []() {return prefs::get().grid();},
        [](bool v) {prefs::get().set_grid(v);});
 
    /* ANIMATE MAP */
    register_bool("animate_terrains", true,
        []() {return prefs::get().animate_map();},
        [](bool v) {prefs::get().set_animate_map(v);},
        [&](widget& w) { disable_widget_on_toggle<toggle_button>(*this, w, "animate_water"); }, true);
 
    /* ANIMATE WATER */
    register_bool("animate_water", true,
        []() {return prefs::get().animate_water();},
        [](bool v) {prefs::get().set_animate_water(v);});
 
    /* SHOW UNIT STANDING ANIMS */
    register_bool("animate_units_standing", true,
        []() {return prefs::get().show_standing_animations();},
        [](bool v) {prefs::get().set_show_standing_animations(v);});
 
    /* SHOW UNIT IDLE ANIMS */
    register_bool("animate_units_idle", true,
        []() {return prefs::get().idle_anim();},
        [](bool v) {prefs::get().set_idle_anim(v);},
        [&](widget& w) { disable_widget_on_toggle<slider>(*this, w, "idle_anim_frequency"); }, true);
 
    register_integer("idle_anim_frequency", true,
        []() {return prefs::get().idle_anim_rate();},
        [](int v) {prefs::get().set_idle_anim_rate(v);});
 
    /* FONT SCALING */
    //register_integer("scaling_slider", true,
    //  font_scaling, set_font_scaling);
 
    /* VSYNC */
    register_bool("vsync", true,
        []() {return prefs::get().vsync();},
        [](bool v) {prefs::get().set_vsync(v);});
 
    /* SELECT THEME */
    menu_button& theme_list = find_widget<menu_button>("choose_theme");
    set_theme_list(theme_list);
    connect_signal_notify_modified(theme_list,
        [this](auto&&...) { handle_theme_select(); });
 
    /* SELECT GUI2 THEME */
    menu_button& gui2_theme_list = find_widget<menu_button>("choose_gui2_theme");
    button& apply_btn = find_widget<button>("apply");
    set_gui2_theme_list(gui2_theme_list);
    connect_signal_notify_modified(gui2_theme_list, [&](auto&&...) { apply_btn.set_active(true); });
    apply_btn.set_active(false);
    connect_signal_mouse_left_click(apply_btn,
        [this](auto&&...) { handle_gui2_theme_select(); });
 
    //
    // SOUND PANEL
    //
 
    /* SOUND FX */
    initialize_sound_option_group("sfx",
        []         { return prefs::get().sound(); },
        [](bool v) { return prefs::get().set_sound(v); },
        []         { return prefs::get().sound_volume().as_percent(); },
        [](int v)  {        prefs::get().set_sound_volume(sound::volume::from_percent(v)); });
 
    /* MUSIC */
    initialize_sound_option_group("music",
        []         { return prefs::get().music_on(); },
        [](bool v) { return prefs::get().set_music(v); },
        []         { return prefs::get().music_volume().as_percent(); },
        [](int v)  {        prefs::get().set_music_volume(sound::volume::from_percent(v)); });
 
    register_bool("sound_toggle_stop_music_in_background", true,
        []() {return prefs::get().stop_music_in_background();},
        [](bool v) {prefs::get().set_stop_music_in_background(v);});
 
    /* TURN BELL */
    initialize_sound_option_group("bell",
        []         { return prefs::get().turn_bell(); },
        [](bool v) { return prefs::get().set_turn_bell(v); },
        []         { return prefs::get().bell_volume().as_percent(); },
        [](int v)  {        prefs::get().set_bell_volume(sound::volume::from_percent(v)); });
 
    /* UI FX */
    initialize_sound_option_group("uisfx",
        []         { return prefs::get().ui_sound_on(); },
        [](bool v) { return prefs::get().set_ui_sound(v); },
        []         { return prefs::get().ui_volume().as_percent(); },
        [](int v)  {        prefs::get().set_ui_volume(sound::volume::from_percent(v)); });
 
    //
    // MULTIPLAYER PANEL
    //
 
    /* GENERAL TAB */
 
    /* CHAT LINES */
    register_integer("chat_lines", true,
        []() {return prefs::get().chat_lines();},
        [](int v) {prefs::get().set_chat_lines(v);});
 
    /* CHAT TIMESTAMPPING */
    register_bool("chat_timestamps", true,
        []() {return prefs::get().chat_timestamp();},
        [](bool v) {prefs::get().set_chat_timestamp(v);});
 
    /* SAVE PASSWORD */
    register_bool("remember_password", true,
        []() {return prefs::get().remember_password();},
        [](bool v) {prefs::get().set_remember_password(v);});
 
    /* WHISPERS FROM FRIENDS ONLY */
    register_bool("lobby_whisper_friends_only", true,
        []() {return prefs::get().lobby_whisper_friends_only();},
        [](bool v) {prefs::get().set_lobby_whisper_friends_only(v);});
 
    /* LOBBY JOIN NOTIFICATIONS */
    lobby_joins_group.add_member(find_widget<toggle_button>("lobby_joins_none", false, true), pref_constants::lobby_joins::show_none);
    lobby_joins_group.add_member(find_widget<toggle_button>("lobby_joins_friends", false, true), pref_constants::lobby_joins::show_friends);
    lobby_joins_group.add_member(find_widget<toggle_button>("lobby_joins_all", false, true), pref_constants::lobby_joins::show_all);
 
    lobby_joins_group.set_member_states(prefs::get().get_lobby_joins());
 
    lobby_joins_group.on_modified([&](widget&, const pref_constants::lobby_joins val) {
        prefs::get().set_lobby_joins(val);
    });
 
    /* ALERTS */
    connect_signal_mouse_left_click(find_widget<button>("mp_alerts"),
        [](auto&&...) { mp_alerts_options::display(); });
 
    /* SET WESNOTHD PATH */
    connect_signal_mouse_left_click(find_widget<button>("mp_wesnothd"),
        [](auto&&...) { prefs::get().show_wesnothd_server_search(); });
 
 
    /* FRIENDS TAB */
 
    listbox& friends_list = find_widget<listbox>("friends_list");
    friends_list.clear();
 
    for(const auto& entry : prefs::get().get_acquaintances()) {
        friends_list.add_row(get_friends_list_row_data(entry.second));
    }
 
    update_friends_list_controls(friends_list);
 
    text_box& textbox = find_widget<text_box>("friend_name_box");
 
    connect_signal_mouse_left_click(find_widget<button>("add_friend"),
        [&, this](auto&&...) { add_friend_list_entry(true, textbox); });
 
    connect_signal_mouse_left_click(find_widget<button>("add_ignored"),
        [&, this](auto&&...) { add_friend_list_entry(false, textbox); });
 
    connect_signal_mouse_left_click(find_widget<button>("remove"),
        [&, this](auto&&...) { remove_friend_list_entry(friends_list, textbox); });
 
    connect_signal_notify_modified(friends_list,
        [&, this](auto&&...) { on_friends_list_select(friends_list, textbox); });
 
    //
    // ADVANCED PANEL
    //
 
    listbox& advanced = find_widget<listbox>("advanced_prefs");
 
    widget_data row_data;
 
    for(const auto& option : prefs::get().get_advanced_preferences()) {
        const std::string pref_name = option.field;
 
        row_data["pref_name"]["label"] = option.name;
        grid* main_grid = &advanced.add_row(row_data);
 
        grid& details_grid = main_grid->find_widget<grid>("prefs_setter_grid");
        details_grid.set_visible(widget::visibility::invisible);
 
        // The toggle widget for toggle-type options (hidden for other types)
        toggle_button& toggle_box = main_grid->find_widget<toggle_button>("value_toggle");
        toggle_box.set_visible(widget::visibility::hidden);
 
        if(!option.description.empty()) {
            main_grid->find_widget<styled_widget>("description").set_label(option.description);
        }
 
        switch(option.type) {
            case preferences::option::avd_type::TOGGLE: {
 
                toggle_box.set_visible(widget::visibility::visible);
                toggle_box.set_value(preferences_dialog_friend::get(pref_name, option.cfg["default"].to_bool()));
 
                connect_signal_mouse_left_click(toggle_box,
                    [&, pref_name](auto&&...) { preferences_dialog_friend::set(pref_name, toggle_box.get_value_bool()); });
 
                gui2::bind_default_status_label(toggle_box, "value");
                break;
            }
 
            case preferences::option::avd_type::SLIDER: {
                auto setter_widget = build_single_widget_instance<slider>(config {"definition", "minimal"});
                setter_widget->set_id("setter");
                // Maximum must be set first or this will assert
                setter_widget->set_value_range(option.cfg["min"].to_int(), option.cfg["max"].to_int());
                setter_widget->set_step_size(option.cfg["step"].to_int(1));
 
                details_grid.swap_child("setter", std::move(setter_widget), true);
 
                slider& slide = details_grid.find_widget<slider>("setter");
 
                slide.set_value(preferences_dialog_friend::get(pref_name, option.cfg["default"].to_int()));
 
                connect_signal_notify_modified(slide,
                    [&, pref_name](auto&&...) { preferences_dialog_friend::set(pref_name, slide.get_value()); });
 
                gui2::bind_default_status_label(slide, "value");
                break;
            }
 
            case preferences::option::avd_type::COMBO: {
                std::vector<config> menu_data;
                std::vector<std::string> option_ids;
 
                for(const config& choice : option.cfg.child_range("option")) {
                    config menu_item;
                    menu_item["label"] = choice["name"];
                    if(choice.has_attribute("description")) {
                        menu_item["details"] = markup::span_color("#777", choice["description"]);
                    }
                    menu_data.push_back(menu_item);
                    option_ids.push_back(choice["id"]);
                }
 
                // Attempt to find an initial selection
                int selected = std::distance(option_ids.begin(), std::find(option_ids.begin(), option_ids.end(),
                    preferences_dialog_friend::get(pref_name, option.cfg["default"].str())
                ));
 
                // If the saved option value was invalid, reset selection to 0.
                if(selected < 0 || selected >= static_cast<int>(option_ids.size())) {
                    selected = 0;
                }
 
                auto setter_widget = build_single_widget_instance<menu_button>();
                setter_widget->set_id("setter");
 
                details_grid.swap_child("setter", std::move(setter_widget), true);
 
                menu_button& menu = details_grid.find_widget<menu_button>("setter");
 
                menu.set_use_markup(true);
                menu.set_values(menu_data, selected);
 
                connect_signal_notify_modified(menu,
                    [=](widget& w, auto&&...) { preferences_dialog_friend::set(pref_name, option_ids[dynamic_cast<menu_button&>(w).get_value()]); });
 
                gui2::bind_default_status_label(menu, "value");
                break;
            }
 
            case preferences::option::avd_type::SPECIAL: {
                //main_grid->remove_child("setter");
 
                auto value_widget = build_single_widget_instance<image>();
                value_widget->set_label("icons/arrows/arrows_blank_right_25.png~CROP(3,3,18,18)");
 
                main_grid->swap_child("value", std::move(value_widget), true);
                break;
            }
        }
    }
 
    connect_signal_notify_modified(advanced,
        [this, &advanced](auto&&...) { on_advanced_prefs_list_select(advanced); });
 
    on_advanced_prefs_list_select(advanced);
 
    //
    // HOTKEYS PANEL
    //
 
    multimenu_button& hotkey_menu = find_widget<multimenu_button>("hotkey_category_menu");
    connect_signal_notify_modified(hotkey_menu,
        [this](auto&&...) { hotkey_filter_callback(); });
 
    listbox& hotkey_list = setup_hotkey_list();
 
    text_box& filter = find_widget<text_box>("filter");
    filter.on_modified([this](const auto&) { hotkey_filter_callback(); });
 
    hotkey_list.set_sorters(
        // Action column
        [this](const std::size_t i) { return visible_hotkeys_[i]->description; },
 
        // Hotkey column
        [this](const std::size_t i) { return hotkey::get_names(visible_hotkeys_[i]->id); },
 
        // Scope columns
        [this](const std::size_t i) { return !visible_hotkeys_[i]->scope[hotkey::SCOPE_GAME]; },
        [this](const std::size_t i) { return !visible_hotkeys_[i]->scope[hotkey::SCOPE_EDITOR]; },
        [this](const std::size_t i) { return !visible_hotkeys_[i]->scope[hotkey::SCOPE_MAIN_MENU]; }
    );
 
    hotkey_list.set_active_sorter("sort_0", sort_order::type::ascending, true);
 
    connect_signal_mouse_left_click(find_widget<button>("btn_add_hotkey"),
        [this, &hotkey_list](auto&&...) { add_hotkey_callback(hotkey_list); });
 
    connect_signal_mouse_left_click(find_widget<button>("btn_clear_hotkey"),
        [this, &hotkey_list](auto&&...) { remove_hotkey_callback(hotkey_list); });
 
    connect_signal_mouse_left_click(find_widget<button>("btn_reset_hotkeys"),
        [this](auto&&...) { default_hotkey_callback(); });
}
 
listbox& preferences_dialog::setup_hotkey_list()
{
    widget_data row_data;
 
    t_string& row_icon   = row_data["img_icon"]["label"];
    t_string& row_action = row_data["lbl_desc"]["label"];
    t_string& row_hotkey = row_data["lbl_hotkey"]["label"];
 
    t_string& row_is_g   = row_data["lbl_is_game"]["label"];
    t_string& row_is_e   = row_data["lbl_is_editor"]["label"];
    t_string& row_is_m   = row_data["lbl_is_mainmenu"]["label"];
 
    listbox& hotkey_list = find_widget<listbox>("list_hotkeys");
 
    hotkey_list.clear();
    visible_hotkeys_.clear();
    visible_categories_.clear();
 
    //
    // Main hotkeys list
    //
 
    // These translated initials should match those used in data/gui/window/preferences/02_hotkeys.cfg
    const std::string gh = markup::span_color("#0f0", _("game_hotkeys^G"));
    const std::string eh = markup::span_color("#0f0", _("editor_hotkeys^E"));
    const std::string mh = markup::span_color("#0f0", _("mainmenu_hotkeys^M"));
 
    for(const auto& [id, hotkey_item] : hotkey::get_hotkey_commands()) {
        if(hotkey_item.hidden) {
            continue;
        }
 
        visible_hotkeys_.push_back(&hotkey_item);
        visible_categories_.insert(hotkey_item.category);
 
        if(filesystem::file_exists(game_config::path + "/images/icons/action/" + hotkey_item.id + "_25.png")) {
            row_icon = "icons/action/" + hotkey_item.id + "_25.png~CROP(3,3,18,18)";
        } else {
            row_icon = "";
        }
 
        row_action = hotkey_item.description;
        row_hotkey = hotkey::get_names(hotkey_item.id);
 
        row_is_g = hotkey_item.scope[hotkey::SCOPE_GAME]      ? gh : "";
        row_is_e = hotkey_item.scope[hotkey::SCOPE_EDITOR]    ? eh : "";
        row_is_m = hotkey_item.scope[hotkey::SCOPE_MAIN_MENU] ? mh : "";
 
        hotkey_list.add_row(row_data);
    }
 
    //
    // Filter options
    //
 
    std::vector<config> filter_ops;
    for(const hotkey::HOTKEY_CATEGORY& cat : visible_categories_) {
        filter_ops.emplace_back("label", hotkey::get_translatable_category_name(cat), "checkbox", false);
    }
 
    find_widget<multimenu_button>("hotkey_category_menu").set_values(filter_ops);
 
    return hotkey_list;
}
 
void preferences_dialog::add_hotkey_callback(listbox& hotkeys)
{
    int row_number = hotkeys.get_selected_row();
    if(row_number < 0) {
        gui2::show_transient_message("", _("No hotkey selected"));
        return;
    }
 
    const hotkey::hotkey_command& hotkey_item = *visible_hotkeys_[row_number];
 
    gui2::dialogs::hotkey_bind bind_dlg(hotkey_item.id);
    bind_dlg.show();
 
    hotkey::hotkey_ptr newhk = bind_dlg.get_new_binding();
    hotkey::hotkey_ptr oldhk;
 
    // only if not cancelled.
    if(!newhk) {
        return;
    }
 
    for(const hotkey::hotkey_ptr& hk : hotkey::get_hotkeys()) {
        if(!hk->is_disabled() && newhk->bindings_equal(hk)) {
            oldhk = hk;
        }
    }
 
    if(oldhk && oldhk->get_command() == hotkey_item.id) {
        return;
    }
 
    if(oldhk && oldhk->get_command() != "null") {
        const std::string text = VGETTEXT("“<b>$hotkey_sequence|</b>” is in use by “<b>$old_hotkey_action|</b>”.\nDo you wish to reassign it to “<b>$new_hotkey_action|</b>”?", {
            {"hotkey_sequence",   oldhk->get_name()},
            {"old_hotkey_action", hotkey::get_hotkey_command(oldhk->get_command()).description},
            {"new_hotkey_action", hotkey::get_hotkey_command(newhk->get_command()).description}
        });
 
        const int res = gui2::show_message(_("Reassign Hotkey"), text, gui2::dialogs::message::yes_no_buttons, true);
        if(res != gui2::retval::OK) {
            return;
        }
    }
 
    hotkey::add_hotkey(newhk);
 
    // We need to recalculate all hotkey names in because we might have removed a hotkey from another command.
    for(std::size_t i = 0; i < hotkeys.get_item_count(); ++i) {
        const hotkey::hotkey_command& hotkey_item_row = *visible_hotkeys_[i];
        hotkeys.get_row_grid(i)->find_widget<label>("lbl_hotkey").set_label(hotkey::get_names(hotkey_item_row.id));
    }
}
 
void preferences_dialog::default_hotkey_callback()
{
    gui2::show_transient_message(_("Hotkeys Reset"), _("All hotkeys have been reset to their default values."));
 
    prefs::get().clear_hotkeys();
 
    find_widget<text_box>("filter").set_value("");
 
    // Set up the list again and reselect the default sorting option.
    listbox& hotkey_list = setup_hotkey_list();
    hotkey_list.set_active_sorter("sort_0", sort_order::type::ascending, true);
}
 
void preferences_dialog::remove_hotkey_callback(listbox& hotkeys)
{
    int row_number = hotkeys.get_selected_row();
    if(row_number < 0) {
        gui2::show_transient_message("", _("No hotkey selected"));
        return;
    }
 
    const hotkey::hotkey_command& hotkey_item = *visible_hotkeys_[row_number];
    hotkey::clear_hotkeys(hotkey_item.id);
    hotkeys.get_row_grid(row_number)->find_widget<label>("lbl_hotkey").set_label(hotkey::get_names(hotkey_item.id));
}
 
void preferences_dialog::hotkey_filter_callback()
{
    const multimenu_button& hotkey_menu = find_widget<const multimenu_button>("hotkey_category_menu");
    const text_box& name_filter = find_widget<const text_box>("filter");
 
    boost::dynamic_bitset<> toggle_states = hotkey_menu.get_toggle_states();
    boost::dynamic_bitset<> res(visible_hotkeys_.size());
 
    std::string text = name_filter.get_value();
 
    // Nothing selected. It means that *all* categories are shown.
    if(toggle_states.none()) {
        toggle_states = ~toggle_states;
    }
 
    for(std::size_t h = 0; h < visible_hotkeys_.size(); ++h) {
        // Default to true if there is no filter text
        bool found = true;
 
        if(!text.empty()) {
            const std::string description = visible_hotkeys_[h]->description.str();
 
            for(const auto& word : utils::split(text, ' ')) {
                found = translation::ci_search(description, word);
 
                // No match, we're excluding this hotkey
                if(!found) {
                    break;
                }
            }
        }
 
        unsigned cat_index = 0;
 
        // Filter categories
        for(const hotkey::HOTKEY_CATEGORY& cat : visible_categories_) {
            if(visible_hotkeys_[h]->category == cat) {
                break;
            } else {
                ++cat_index;
            }
        }
 
        if(cat_index < toggle_states.size() && found) {
            res[h] = toggle_states[cat_index];
        } else {
            res[h] = false;
        }
    }
 
    find_widget<listbox>("list_hotkeys").set_row_shown(res);
}
 
void preferences_dialog::on_advanced_prefs_list_select(listbox& list)
{
    const int selected_row = list.get_selected_row();
    const auto& pref = prefs::get().get_advanced_preferences()[selected_row];
 
    if(pref.type == preferences::option::avd_type::SPECIAL) {
        if(pref.field == "logging") {
            gui2::dialogs::log_settings::display();
        } else if(pref.field == "orb_color") {
            gui2::dialogs::select_orb_colors::display();
        } else if(pref.field == "reach_map") {
            gui2::dialogs::reachmap_options::display();
        } else {
            WRN_GUI_L << "Invalid or unimplemented custom advanced prefs option: " << pref.field;
        }
 
        // Add more options here as needed
    }
 
    const bool has_description = !pref.description.empty();
 
    if(has_description || (pref.type != preferences::option::avd_type::SPECIAL && pref.type != preferences::option::avd_type::TOGGLE)) {
        list.get_row_grid(selected_row)->find_widget<widget>("prefs_setter_grid")
            .set_visible(widget::visibility::visible);
    }
 
    if(last_selected_item_ != selected_row) {
        list.get_row_grid(last_selected_item_)->find_widget<widget>("prefs_setter_grid")
            .set_visible(widget::visibility::invisible);
 
        last_selected_item_ = selected_row;
    }
}
 
void preferences_dialog::pre_show()
{
    set_always_save_fields(true);
 
    connect_signal_mouse_left_click(find_widget<button>("about"),
        [](auto&&...) { game_version::display(); });
 
    //
    // Status labels
    // These need to be set here in pre_show, once the fields are initialized. For some reason, this
    // is not the case for those in Advanced
    //
    gui2::bind_default_status_label(find_widget<slider>("max_saves_slider"));
    gui2::bind_default_status_label(find_widget<slider>("turbo_slider"));
    gui2::bind_default_status_label(find_widget<slider>("pixel_scale_slider"));
}
 
// Special fullscreen callback
void preferences_dialog::fullscreen_toggle_callback()
{
    const bool ison = find_widget<toggle_button>("fullscreen").get_value_bool();
    video::set_fullscreen(ison);
 
    menu_button& res_list = find_widget<menu_button>("resolution_set");
 
    set_resolution_list(res_list);
    res_list.set_active(!ison);
}
 
void preferences_dialog::fullscreen_entered_callback()
{
    find_widget<toggle_button>("fullscreen").set_value(true);
 
    menu_button& res_list = find_widget<menu_button>("resolution_set");
 
    set_resolution_list(res_list);
    res_list.set_active(false);
}
 
void preferences_dialog::fullscreen_left_callback()
{
    find_widget<toggle_button>("fullscreen").set_value(false);
 
    menu_button& res_list = find_widget<menu_button>("resolution_set");
 
    set_resolution_list(res_list);
    res_list.set_active(true);
}
 
void preferences_dialog::handle_res_select()
{
    menu_button& res_list = find_widget<menu_button>("resolution_set");
 
    if(video::set_resolution(resolutions_[res_list.get_value()])) {
        set_resolution_list(res_list);
    }
}
 
void preferences_dialog::handle_theme_select()
{
    menu_button& theme_list = find_widget<menu_button>("choose_theme");
 
    const auto selection = theme_list.get_value();
    const auto& theme = themes_.at(selection);
    auto* display = display::get_singleton();
 
    prefs::get().set_theme(theme.id);
    if(display && resources::gamedata && resources::gamedata->get_theme().empty()) {
        display->set_theme(theme.id);
    }
 
}
 
void preferences_dialog::handle_gui2_theme_select()
{
    menu_button& gui2_theme_list = find_widget<menu_button>("choose_gui2_theme");
    unsigned selected_theme = gui2_theme_list.get_value();
    if (selected_theme != current_gui_theme_) {
        current_gui_theme_ = selected_theme;
        prefs::get().set_gui2_theme(gui2_themes_.at(selected_theme));
        set_retval(gui2::dialogs::title_screen::RELOAD_UI);
    }
}
 
void preferences_dialog::post_show()
{
    prefs::get().save_hotkeys();
 
    // Save new prefs to disk. This also happens on app close, but doing
    // it here too ensures nothing is lost in case of, say, a crash.
    prefs::get().write_preferences();
 
    // Needed for applying changes to tip panel visiblity on dialog close
    if (is_reload_needed_) {
        set_retval(gui2::dialogs::title_screen::RELOAD_UI);
    }
}
 
} // namespace dialogs