edit_unit.cpp

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/*
    Copyright (C) 2023 - 2025
    by Subhraman Sarkar (babaissarkar) <sbmskmm@protonmail.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.
*/
 
/*  unit type editor dialog */
 
#define GETTEXT_DOMAIN "wesnoth-lib"
 
#include "gui/dialogs/editor/edit_unit.hpp"
 
#include "filesystem.hpp"
#include "gettext.hpp"
#include "gui/dialogs/file_dialog.hpp"
#include "gui/dialogs/message.hpp"
#include "gui/dialogs/transient_message.hpp"
#include "gui/dialogs/units_dialog.hpp"
#include "gui/widgets/button.hpp"
#include "gui/widgets/combobox.hpp"
#include "gui/widgets/image.hpp"
#include "gui/widgets/label.hpp"
#include "gui/widgets/menu_button.hpp"
#include "gui/widgets/multimenu_button.hpp"
#include "gui/widgets/scroll_label.hpp"
#include "gui/widgets/scroll_text.hpp"
#include "gui/widgets/slider.hpp"
#include "gui/widgets/spinner.hpp"
#include "gui/widgets/tab_container.hpp"
#include "gui/widgets/text_box.hpp"
#include "gui/widgets/toggle_button.hpp"
#include "picture.hpp"
#include "serialization/binary_or_text.hpp"
#include "serialization/parser.hpp"
#include "serialization/string_utils.hpp"
#include "units/types.hpp"
 
#include <boost/algorithm/string/replace.hpp>
#include <boost/filesystem.hpp>
#include <sstream>
 
namespace gui2::dialogs
{
 
REGISTER_DIALOG(editor_edit_unit);
 
// TODO properly support attributes from installed addons
editor_edit_unit::editor_edit_unit(const game_config_view& game_config, const std::string& addon_id)
    : modal_dialog(window_id())
    , game_config_(game_config)
    , addon_id_(addon_id)
{
    for (const auto& [id, cfg] : unit_types.specials()) {
        specials_list_.emplace_back("label", id, "checkbox", false);
    }
 
    for (const auto& [id, cfg] : unit_types.abilities()) {
        abilities_list_.emplace_back("label", id, "checkbox", false);
    }
 
    connect_signal<event::SDL_KEY_DOWN>(std::bind(
        &editor_edit_unit::signal_handler_sdl_key_down, this, std::placeholders::_2, std::placeholders::_3, std::placeholders::_5, std::placeholders::_6));
}
 
void editor_edit_unit::pre_show() {
    tab_container& tabs = find_widget<tab_container>("tabs");
    connect_signal_notify_modified(tabs, std::bind(&editor_edit_unit::on_page_select, this));
 
    button& quit = find_widget<button>("exit");
    connect_signal_mouse_left_click(quit, std::bind(&editor_edit_unit::quit_confirmation, this));
 
    //
    // Main Stats tab
    //
 
    menu_button& alignments = find_widget<menu_button>("alignment_list");
    for (auto& align : unit_alignments::values) {
        // Show the user the translated strings,
        // but use the untranslated align strings for generated WML
        const std::string& icon_path = "icons/alignments/alignment_" + std::string(align) + "_30.png";
        align_list_.emplace_back("label", t_string(static_cast<std::string>(align), "wesnoth"), "icon", icon_path);
    }
    alignments.set_values(align_list_);
 
    menu_button& races = find_widget<menu_button>("race_list");
    for(const auto& [_, race] : unit_types.races()) {
        race_list_.emplace_back("label", race.id(), "icon", race.get_icon_path_stem() + "_30.png");
    }
 
    if (!race_list_.empty()) {
        races.set_values(race_list_);
    }
 
    button& load = find_widget<button>("load_unit_type");
    std::stringstream tooltip;
    tooltip << t_string("Hotkey(s): ", "wesnoth");
    #ifdef __APPLE__
        tooltip << "cmd+o";
    #else
        tooltip << "ctrl+o";
    #endif
    load.set_tooltip(tooltip.str());
    connect_signal_mouse_left_click(load, std::bind(&editor_edit_unit::load_unit_type, this));
 
    connect_signal_mouse_left_click(
        find_widget<button>("browse_unit_image"),
        std::bind(&editor_edit_unit::select_file, this, "data/core/images/units", "unit_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("preview_unit_image"),
        std::bind(&editor_edit_unit::update_image, this, "unit_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("browse_portrait_image"),
        std::bind(&editor_edit_unit::select_file, this, "data/core/images/portraits", "portrait_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("preview_portrait_image"),
        std::bind(&editor_edit_unit::update_image, this, "portrait_image"));
 
    connect_signal_notify_modified(
        find_widget<text_box>("name_box"),
        std::bind(&editor_edit_unit::button_state_change, this));
    connect_signal_notify_modified(
        find_widget<text_box>("id_box"),
        std::bind(&editor_edit_unit::button_state_change, this));
 
    //
    // Advanced Tab
    //
 
    menu_button& movetypes = find_widget<menu_button>("movetype_list");
    for(const auto& [name, _] : unit_types.movement_types()) {
        movetype_list_.emplace_back("label", name);
    }
 
    if (!movetype_list_.empty()) {
        movetypes.set_values(movetype_list_);
    }
 
    menu_button& defenses = find_widget<menu_button>("defense_list");
    const config& defense_attr = game_config_
                .mandatory_child("units")
                .mandatory_child("movetype")
                .mandatory_child("defense");
    for (const auto& [key, _] : defense_attr.attribute_range()) {
        defense_list_.emplace_back("label", key);
    }
 
    menu_button& movement_costs = find_widget<menu_button>("movement_costs_list");
    if (!defense_list_.empty()) {
        defenses.set_values(defense_list_);
        def_toggles_.resize(defense_list_.size());
        movement_costs.set_values(defense_list_);
        move_toggles_.resize(defense_list_.size());
    }
 
    menu_button& resistances = find_widget<menu_button>("resistances_list");
 
    const config& resistances_attr = game_config_
                .mandatory_child("units")
                .mandatory_child("movetype")
                .mandatory_child("resistance");
    for (const auto& [key, _] : resistances_attr.attribute_range()) {
        resistances_list_.emplace_back("label", key, "icon", "icons/profiles/" + key + ".png");
    }
 
    if (!resistances_list_.empty()) {
        resistances.set_values(resistances_list_);
        res_toggles_.resize(resistances_list_.size());
    }
 
    menu_button& usage_types = find_widget<menu_button>("usage_list");
    usage_type_list_.emplace_back("label", _("scout"));
    usage_type_list_.emplace_back("label", _("fighter"));
    usage_type_list_.emplace_back("label", _("archer"));
    usage_type_list_.emplace_back("label", _("mixed fighter"));
    usage_type_list_.emplace_back("label", _("healer"));
    usage_types.set_values(usage_type_list_);
 
    multimenu_button& abilities = find_widget<multimenu_button>("abilities_list");
    abilities.set_values(abilities_list_);
 
    connect_signal_mouse_left_click(
        find_widget<button>("browse_small_profile_image"),
        std::bind(&editor_edit_unit::select_file, this, "data/core/images/portraits", "small_profile_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("preview_small_profile_image"),
        std::bind(&editor_edit_unit::update_image, this, "small_profile_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("load_movetype"),
        std::bind(&editor_edit_unit::load_movetype, this));
    connect_signal_notify_modified(
        find_widget<slider>("resistances_slider"),
        std::bind(&editor_edit_unit::store_resistances, this));
    connect_signal_notify_modified(
        find_widget<menu_button>("resistances_list"),
        std::bind(&editor_edit_unit::update_resistances, this));
    connect_signal_mouse_left_click(
        find_widget<toggle_button>("resistances_checkbox"),
        std::bind(&editor_edit_unit::enable_resistances_slider, this));
 
    connect_signal_notify_modified(
        find_widget<slider>("defense_slider"),
        std::bind(&editor_edit_unit::store_defenses, this));
    connect_signal_notify_modified(
        find_widget<menu_button>("defense_list"),
        std::bind(&editor_edit_unit::update_defenses, this));
    connect_signal_mouse_left_click(
        find_widget<toggle_button>("defense_checkbox"),
        std::bind(&editor_edit_unit::enable_defense_slider, this));
 
    connect_signal_notify_modified(
        find_widget<slider>("movement_costs_slider"),
        std::bind(&editor_edit_unit::store_movement_costs, this));
    connect_signal_notify_modified(
        find_widget<menu_button>("movement_costs_list"),
        std::bind(&editor_edit_unit::update_movement_costs, this));
    connect_signal_mouse_left_click(
        find_widget<toggle_button>("movement_costs_checkbox"),
        std::bind(&editor_edit_unit::enable_movement_slider, this));
 
    if (!res_toggles_.empty()) {
        enable_resistances_slider();
    }
 
    if (!def_toggles_.empty()) {
        enable_defense_slider();
    }
 
    if (!move_toggles_.empty()) {
        enable_movement_slider();
    }
 
    //
    // Attack Tab
    //
 
    multimenu_button& specials = find_widget<multimenu_button>("weapon_specials_list");
    specials.set_values(specials_list_);
 
    combobox& attack_types = find_widget<combobox>("attack_type_list");
    if (!resistances_list_.empty()) {
        attack_types.set_values(resistances_list_);
    }
 
    // Connect signals
    connect_signal_mouse_left_click(
        find_widget<button>("browse_attack_image"),
        std::bind(&editor_edit_unit::select_file, this, "data/core/images/attacks", "attack_image"));
    connect_signal_mouse_left_click(
        find_widget<button>("preview_attack_image"),
        std::bind(&editor_edit_unit::update_image, this, "attack_image"));
    connect_signal_notify_modified(
        find_widget<menu_button>("atk_list"),
        std::bind(&editor_edit_unit::select_attack, this));
    connect_signal_mouse_left_click(
        find_widget<button>("atk_new"),
        std::bind(&editor_edit_unit::add_attack, this));
    connect_signal_mouse_left_click(
        find_widget<button>("atk_delete"),
        std::bind(&editor_edit_unit::delete_attack, this));
    connect_signal_mouse_left_click(
        find_widget<button>("atk_next"),
        std::bind(&editor_edit_unit::next_attack, this));
    connect_signal_mouse_left_click(
        find_widget<button>("atk_prev"),
        std::bind(&editor_edit_unit::prev_attack, this));
 
    update_index();
 
    // Disable OK button at start, since ID and Name boxes are empty
    button_state_change();
}
 
void editor_edit_unit::on_page_select()
{
    save_unit_type();
 
    tab_container& tabs = find_widget<tab_container>("tabs");
    if (tabs.get_active_tab_index() == 3) {
        update_wml_view();
    }
}
 
void editor_edit_unit::select_file(const std::string& default_dir, const std::string& id_stem)
{
    gui2::dialogs::file_dialog dlg;
    dlg.set_title(_("Choose File"))
        .set_ok_label(_("Select"))
        .set_path(default_dir)
        .set_read_only(true);
 
    // If the file is found inside Wesnoth's data, give its relative path
    // if not, ask user if they want to copy it into their addon.
    // If yes, copy and return correct relative path inside addon.
    // return empty otherwise.
    auto find_or_copy = [](const std::string& path, const std::string& addon_id, const std::string& type) {
        const std::string message
            = _("This file is outside Wesnoth’s data dirs. Do you wish to copy it into your add-on?");
        const auto optional_path = filesystem::to_asset_path(path, addon_id, type);
 
        if(optional_path.has_value()) {
            return optional_path.value();
        } else if (gui2::show_message(_("Confirm"), message, message::yes_no_buttons) == gui2::retval::OK) {
            boost::filesystem::path output_path = filesystem::get_current_editor_dir(addon_id);
            output_path /= type;
            output_path /= boost::filesystem::path(path).filename();
            filesystem::copy_file(path, output_path.string());
            return output_path.filename().string();
        } else {
            return std::string();
        }
    };
 
    if (dlg.show()) {
        if((id_stem == "unit_image")
            || (id_stem == "portrait_image")
            || (id_stem == "small_profile_image")
            || (id_stem == "attack_image"))
        {
            find_widget<text_box>("path_"+id_stem).set_value(find_or_copy(dlg.path(), addon_id_, "images"));
            update_image(id_stem);
        }
    }
}
 
void editor_edit_unit::load_unit_type() {
    const auto& all_type_list = unit_types.types_list();
    const auto& type_select = gui2::dialogs::units_dialog::build_create_dialog(all_type_list);
    type_select->set_ok_label("Load");
 
    if (!type_select->show() && !type_select->is_selected()) {
        return;
    }
 
    const auto& type = all_type_list[type_select->get_selected_index()];
 
    find_widget<text_box>("id_box").set_value(type->id());
    find_widget<text_box>("name_box").set_value(type->type_name().base_str());
    find_widget<spinner>("level_box").set_value(type->level());
    find_widget<slider>("cost_slider").set_value(type->cost());
    find_widget<text_box>("adv_box").set_value(utils::join(type->advances_to()));
    find_widget<slider>("hp_slider").set_value(type->hitpoints());
    find_widget<slider>("xp_slider").set_value(type->experience_needed());
    find_widget<slider>("move_slider").set_value(type->movement());
    find_widget<scroll_text>("desc_box").set_value(type->unit_description().base_str());
    find_widget<text_box>("path_unit_image").set_value(type->image());
    find_widget<text_box>("path_portrait_image").set_value(type->big_profile());
 
    for (const auto& gender : type->genders())
    {
        if (gender == unit_race::GENDER::MALE) {
            find_widget<toggle_button>("gender_male").set_value(true);
        }
 
        if (gender == unit_race::GENDER::FEMALE) {
            find_widget<toggle_button>("gender_female").set_value(true);
        }
    }
 
    set_selected_from_string(
            find_widget<menu_button>("race_list"),
            race_list_,
            type->race_id());
 
    set_selected_from_string(
            find_widget<menu_button>("alignment_list"),
            align_list_,
            unit_alignments::get_string(type->alignment()));
 
    update_image("unit_image");
 
    boost::dynamic_bitset<> enabled_abilities(abilities_list_.size());
    for (size_t i = 0; i < abilities_list_.size(); i++) {
        for (auto special : type->abilities()) {
            const std::string id = special->cfg()["unique_id"].str(special->id());
            if (abilities_list_[i]["label"] == id) {
                enabled_abilities[i] = true;
            }
        }
    }
    find_widget<multimenu_button>("abilities_list").select_options(enabled_abilities);
 
    find_widget<text_box>("path_small_profile_image").set_value(type->small_profile());
 
    set_selected_from_string(
            find_widget<menu_button>("movetype_list"),
            movetype_list_,
            type->movement_type_id());
 
    config cfg;
    type->movement_type().write(cfg, false);
    movement_ = cfg.mandatory_child("movement_costs");
    defenses_ = cfg.mandatory_child("defense");
    resistances_ = cfg.mandatory_child("resistance");
 
    // Overrides for resistance/defense/movement costs
    for (unsigned i = 0; i < resistances_list_.size(); i++) {
        if (!type->get_cfg().has_child("resistance")) {
            break;
        }
 
        for (const auto& [key, _] : type->get_cfg().mandatory_child("resistance").attribute_range()) {
            if (resistances_list_.at(i)["label"] == key) {
                res_toggles_[i] = 1;
            }
        }
    }
 
    for (unsigned i = 0; i < defense_list_.size(); i++) {
        if (type->get_cfg().has_child("defense")) {
            for (const auto& [key, _] : type->get_cfg().mandatory_child("defense").attribute_range()) {
                if (defense_list_.at(i)["label"] == key) {
                    def_toggles_[i] = 1;
                }
            }
        }
 
        if (type->get_cfg().has_child("movement_costs")) {
            for (const auto& [key, _] : type->get_cfg().mandatory_child("movement_costs").attribute_range()) {
                if (defense_list_.at(i)["label"] == key) {
                    move_toggles_[i] = 1;
                }
            }
        }
    }
 
    update_resistances();
    update_defenses();
    update_resistances();
 
    set_selected_from_string(
            find_widget<menu_button>("usage_list"),
            usage_type_list_,
            type->usage());
 
    update_image("small_profile_image");
 
    attacks_.clear();
    for(const auto& atk : type->attacks())
    {
        config attack;
        attack["name"] = atk.id();
        attack["description"] = atk.name().base_str();
        attack["icon"] = atk.icon();
        attack["range"] = atk.range();
        attack["damage"] = atk.damage();
        attack["number"] = atk.num_attacks();
        attack["type"] = atk.type();
 
        boost::dynamic_bitset<> enabled_specials(specials_list_.size());
 
        for (size_t i = 0; i < specials_list_.size(); i++) {
            for (auto special : atk.specials()) {
                const std::string id = special->cfg()["unique_id"].str(special->id());
                if (specials_list_[i]["label"] == id) {
                    enabled_specials[i] = true;
                }
            }
        }
 
        attacks_.push_back(std::make_pair(enabled_specials, attack));
    }
 
    if (!type->attacks().empty()) {
        selected_attack_ = 1;
        update_attacks();
    }
 
    update_index();
 
    button_state_change();
    invalidate_layout();
}
 
void editor_edit_unit::save_unit_type() {
 
    // Clear the config
    type_cfg_.clear();
 
    // Textdomain
    std::string current_textdomain = "wesnoth-" + addon_id_;
 
    config& utype = type_cfg_.add_child("unit_type");
    utype["id"] = find_widget<text_box>("id_box").get_value();
    utype["name"] = t_string(find_widget<text_box>("name_box").get_value(), current_textdomain);
    utype["image"] = find_widget<text_box>("path_unit_image").get_value();
    utype["profile"] = find_widget<text_box>("path_portrait_image").get_value();
    utype["level"] = find_widget<spinner>("level_box").get_value();
    utype["advances_to"] = find_widget<text_box>("adv_box").get_value();
    utype["hitpoints"] = find_widget<slider>("hp_slider").get_value();
    utype["experience"] = find_widget<slider>("xp_slider").get_value();
    utype["cost"] = find_widget<slider>("cost_slider").get_value();
    utype["movement"] = find_widget<slider>("move_slider").get_value();
    utype["description"] = t_string(find_widget<scroll_text>("desc_box").get_value(), current_textdomain);
    utype["race"] = find_widget<menu_button>("race_list").get_value_string();
    utype["alignment"] = unit_alignments::values[find_widget<menu_button>("alignment_list").get_value()];
 
    // Gender
    if (find_widget<toggle_button>("gender_male").get_value()) {
        if (find_widget<toggle_button>("gender_female").get_value()) {
            utype["gender"] = "male,female";
        } else {
            utype["gender"] = "male";
        }
    } else {
        if (find_widget<toggle_button>("gender_female").get_value()) {
            utype["gender"] = "female";
        }
    }
 
    // Page 2
 
    utype["small_profile"] = find_widget<text_box>("path_small_profile_image").get_value();
    utype["movement_type"] = find_widget<menu_button>("movetype_list").get_value_string();
    utype["usage"] = find_widget<menu_button>("usage_list").get_value_string();
 
    if (res_toggles_.any()) {
        config& resistances = utype.add_child("resistance");
        int i = 0;
        for (const auto& [key, _] : resistances_.attribute_range()) {
            if (res_toggles_[i]) {
                resistances[key] = resistances_[key];
            }
            i++;
        }
    }
 
    if (def_toggles_.any()) {
        config& defenses = utype.add_child("defense");
        int i = 0;
        for (const auto& [key, _] : defenses_.attribute_range()) {
            if (def_toggles_[i]) {
                defenses[key] = defenses_[key];
            }
            i++;
        }
    }
 
    if (move_toggles_.any()) {
        config& movement_costs = utype.add_child("movement_costs");
        int i = 0;
        for (const auto& [key, _] : movement_.attribute_range()) {
            if (move_toggles_[i]) {
                movement_costs[key] = movement_[key];
            }
            i++;
        }
    }
 
    std::vector<std::string> selected_abilities;
    const auto& abilities_states = find_widget<multimenu_button>("abilities_list").get_toggle_states();
    if (abilities_states.any()) {
        for (size_t i = 0; i < abilities_states.size(); i++) {
            if (abilities_states[i]) {
                selected_abilities.push_back(abilities_list_[i]["label"]);
            }
        }
    }
    if (!selected_abilities.empty()) {
        utype["abilities_list"] = utils::join(selected_abilities);
    }
 
    // Page 3 (Attacks)
 
    for (const auto& [special_bits, cfg] : attacks_) {
        config& atk = utype.add_child("attack", cfg);
        std::vector<std::string> selected_specials;
        for (size_t i = 0; i < special_bits.size(); i++) {
            if (special_bits[i]) {
                selected_specials.push_back(specials_list_[i]["label"]);
            }
        }
        if (!selected_specials.empty()) {
            atk["specials_list"] = utils::join(selected_specials);
        }
    }
}
 
void editor_edit_unit::update_resistances() {
    find_widget<slider>("resistances_slider")
        .set_value(
            100 - resistances_[find_widget<menu_button>("resistances_list").get_value_string()].to_int());
 
    find_widget<slider>("resistances_slider")
        .set_active(res_toggles_[find_widget<menu_button>("resistances_list").get_value()]);
 
    find_widget<toggle_button>("resistances_checkbox")
        .set_value(res_toggles_[find_widget<menu_button>("resistances_list").get_value()]);
}
 
void editor_edit_unit::store_resistances() {
    resistances_[find_widget<menu_button>("resistances_list").get_value_string()]
        = 100 - find_widget<slider>("resistances_slider").get_value();
}
 
void editor_edit_unit::enable_resistances_slider() {
    bool toggle = find_widget<toggle_button>("resistances_checkbox").get_value();
    res_toggles_[find_widget<menu_button>("resistances_list").get_value()] = toggle;
    find_widget<slider>("resistances_slider").set_active(toggle);
}
 
void editor_edit_unit::update_defenses() {
    find_widget<slider>("defense_slider")
        .set_value(
            100 - defenses_[find_widget<menu_button>("defense_list").get_value_string()].to_int());
 
    find_widget<slider>("defense_slider")
        .set_active(def_toggles_[find_widget<menu_button>("defense_list").get_value()]);
 
    find_widget<toggle_button>("defense_checkbox")
        .set_value(def_toggles_[find_widget<menu_button>("defense_list").get_value()]);
}
 
void editor_edit_unit::store_defenses() {
    defenses_[find_widget<menu_button>("defense_list").get_value_string()]
        = 100 - find_widget<slider>("defense_slider").get_value();
}
 
void editor_edit_unit::enable_defense_slider() {
    bool toggle = find_widget<toggle_button>("defense_checkbox").get_value();
    def_toggles_[find_widget<menu_button>("defense_list").get_value()] = toggle;
    find_widget<slider>("defense_slider").set_active(toggle);
}
 
void editor_edit_unit::update_movement_costs() {
    find_widget<slider>("movement_costs_slider")
        .set_value(
            movement_[find_widget<menu_button>("movement_costs_list").get_value_string()].to_int());
 
    find_widget<slider>("movement_costs_slider")
        .set_active(move_toggles_[find_widget<menu_button>("movement_costs_list").get_value()]);
 
    find_widget<toggle_button>("movement_costs_checkbox")
        .set_value(move_toggles_[find_widget<menu_button>("movement_costs_list").get_value()]);
}
 
void editor_edit_unit::store_movement_costs() {
    movement_[find_widget<menu_button>("movement_costs_list").get_value_string()]
        = find_widget<slider>("movement_costs_slider").get_value();
}
 
void editor_edit_unit::enable_movement_slider() {
    bool toggle = find_widget<toggle_button>("movement_costs_checkbox").get_value();
    move_toggles_[find_widget<menu_button>("movement_costs_list").get_value()] = toggle;
    find_widget<slider>("movement_costs_slider").set_active(toggle);
}
 
void editor_edit_unit::store_attack() {
    // Textdomain
    std::string current_textdomain = "wesnoth-"+addon_id_;
 
    // Save current attack data
    if (selected_attack_ < 1) {
        return;
    }
 
    config attack;
    attack["name"] = find_widget<text_box>("atk_id_box").get_value();
    attack["description"] = t_string(find_widget<text_box>("atk_name_box").get_value(), current_textdomain);
    attack["icon"] = find_widget<text_box>("path_attack_image").get_value();
    attack["type"] = find_widget<combobox>("attack_type_list").get_value();
    attack["damage"] = find_widget<slider>("dmg_box").get_value();
    attack["number"] = find_widget<slider>("dmg_num_box").get_value();
    attack["range"] = find_widget<combobox>("range_list").get_value();
 
    attacks_.at(selected_attack_-1) = {
        find_widget<multimenu_button>("weapon_specials_list").get_toggle_states(),
        attack
    };
}
 
void editor_edit_unit::update_attacks() {
    //Load data
    if (selected_attack_ < 1) {
        return;
    }
 
    config& attack = attacks_.at(selected_attack_-1).second;
 
    find_widget<text_box>("atk_id_box").set_value(attack["name"]);
    find_widget<text_box>("atk_name_box").set_value(attack["description"]);
    find_widget<text_box>("path_attack_image").set_value(attack["icon"]);
    update_image("attack_image");
    find_widget<slider>("dmg_box").set_value(attack["damage"].to_int());
    find_widget<slider>("dmg_num_box").set_value(attack["number"].to_int());
    find_widget<combobox>("range_list").set_value(attack["range"]);
 
    set_selected_from_string(
        find_widget<combobox>("attack_type_list"), resistances_list_, attack["type"]);
 
    find_widget<multimenu_button>("weapon_specials_list")
        .select_options(attacks_.at(selected_attack_-1).first);
}
 
void editor_edit_unit::update_index() {
    find_widget<button>("atk_prev").set_active(selected_attack_ > 1);
    find_widget<button>("atk_delete").set_active(selected_attack_ > 0);
    find_widget<button>("atk_next").set_active(selected_attack_ != attacks_.size());
 
    if (!attacks_.empty()) {
        std::vector<config> atk_name_list;
        for(const auto& atk_data : attacks_) {
            atk_name_list.emplace_back("label", atk_data.second["name"]);
        }
        menu_button& atk_list = find_widget<menu_button>("atk_list");
        atk_list.set_values(atk_name_list);
        atk_list.set_selected(selected_attack_-1, false);
    }
 
    // Set index
    const std::string new_index_str = formatter() << selected_attack_ << "/" << attacks_.size();
    find_widget<label>("atk_number").set_label(new_index_str);
}
 
void editor_edit_unit::add_attack() {
    // Textdomain
    std::string current_textdomain = "wesnoth-"+addon_id_;
 
    config attack;
    attack["name"] = find_widget<text_box>("atk_id_box").get_value();
    attack["description"] = t_string(find_widget<text_box>("atk_name_box").get_value(), current_textdomain);
    attack["icon"] = find_widget<text_box>("path_attack_image").get_value();
    attack["type"] = find_widget<combobox>("attack_type_list").get_value();
    attack["damage"] = find_widget<slider>("dmg_box").get_value();
    attack["number"] = find_widget<slider>("dmg_num_box").get_value();
    attack["range"] = find_widget<combobox>("range_list").get_value();
 
    selected_attack_++;
 
    attacks_.insert(
        attacks_.begin() + selected_attack_ - 1
        , std::make_pair(find_widget<multimenu_button>("weapon_specials_list").get_toggle_states(), attack));
 
    update_index();
}
 
void editor_edit_unit::delete_attack() {
    if (!attacks_.empty()) {
        attacks_.erase(attacks_.begin() + selected_attack_ - 1);
    }
 
    if (attacks_.empty()) {
        // clear fields instead since there are no attacks to show
        selected_attack_ = 0;
        find_widget<button>("atk_delete").set_active(false);
    } else if (selected_attack_ == 1) {
        // 1st attack removed, show the next one
        next_attack();
    } else {
        // show previous attack otherwise
        prev_attack();
    }
 
    update_index();
}
 
void editor_edit_unit::next_attack() {
    store_attack();
 
    if (attacks_.size() > 1) {
        selected_attack_++;
        update_attacks();
    }
 
    update_index();
}
 
void editor_edit_unit::prev_attack() {
    store_attack();
 
    if (selected_attack_ > 0) {
        selected_attack_--;
    }
 
    if (attacks_.size() > 1) {
        update_attacks();
    }
 
    update_index();
}
 
void editor_edit_unit::select_attack() {
    selected_attack_ = find_widget<menu_button>("atk_list").get_value()+1;
    update_attacks();
    update_index();
}
 
//TODO Check if works with non-mainline movetypes
void editor_edit_unit::load_movetype() {
    for(const auto& movetype : game_config_
        .mandatory_child("units")
        .child_range("movetype")) {
        if (movetype["name"] == find_widget<menu_button>("movetype_list").get_value_string()) {
            // Set resistances
            resistances_ = movetype.mandatory_child("resistance");
            update_resistances();
            // Set defense
            defenses_ = movetype.mandatory_child("defense");
            update_defenses();
            // Set movement
            movement_ = movetype.mandatory_child("movement_costs");
            update_movement_costs();
        }
    }
}
 
void editor_edit_unit::update_wml_view() {
    store_attack();
    save_unit_type();
 
    std::stringstream wml_stream;
 
    // Textdomain
    std::string current_textdomain = "wesnoth-" + addon_id_;
 
    wml_stream
        << "#textdomain " << current_textdomain << "\n"
        << "#\n"
        << "# This file was generated using the scenario editor.\n"
        << "#\n";
 
    config_writer out(wml_stream, false);
 
    config& utype_cfg = type_cfg_.mandatory_child("unit_type");
 
    // Update movement, defense and resistance in cfg
    if (!movement_.empty() && (move_toggles_.size() <= movement_.attribute_count()) && move_toggles_.any())
    {
        config& mvt_cfg = utype_cfg.add_child("movement_costs");
        int i = 0;
        for (const auto& [key, value] : movement_.attribute_range()) {
            if (move_toggles_[i] == 1) {
                mvt_cfg[key] = value;
            }
            i++;
        }
    }
 
    if (!defenses_.empty() && def_toggles_.any()  && (def_toggles_.size() <= defenses_.attribute_count()))
    {
        config& def_cfg = utype_cfg.add_child("defense");
        int i = 0;
        for (const auto& [key, value] : defenses_.attribute_range()) {
            if (def_toggles_[i] == 1) {
                def_cfg[key] = value;
            }
            i++;
        }
    }
 
    if (!resistances_.empty() && res_toggles_.any()  && (res_toggles_.size() <= resistances_.attribute_count()))
    {
        config& res_cfg = utype_cfg.add_child("resistance");
        int i = 0;
        for (const auto& [key, value] : resistances_.attribute_range()) {
            if (res_toggles_[i] == 1) {
                res_cfg[key] = value;
            }
            i++;
        }
    }
 
    out.write(type_cfg_);
    generated_wml = wml_stream.str();
    find_widget<scroll_text>("wml_view").set_label(generated_wml);
}
 
void editor_edit_unit::update_image(const std::string& id_stem) {
    std::string rel_path = find_widget<text_box>("path_"+id_stem).get_value();
 
    // remove IPF
    if (rel_path.find("~") != std::string::npos) {
        rel_path = rel_path.substr(0, rel_path.find("~"));
    }
 
    int scale_size = 200; // TODO: Arbitrary, can be changed later.
    if (rel_path.size() > 0) {
        point img_size = ::image::get_size(::image::locator{rel_path});
        float aspect_ratio = static_cast<float>(img_size.x)/img_size.y;
        if(img_size.x > scale_size) {
            rel_path.append("~SCALE(" + std::to_string(scale_size) + "," + std::to_string(scale_size*aspect_ratio) + ")");
        } else if (img_size.y > scale_size) {
            rel_path.append("~SCALE(" + std::to_string(scale_size/aspect_ratio) + "," + std::to_string(scale_size) + ")");
        }
    }
 
    if (id_stem == "portrait_image") {
        // portrait image uses same [image] as unit_image
        find_widget<image>("unit_image").set_label(rel_path);
    } else {
        find_widget<image>(id_stem).set_label(rel_path);
    }
 
    invalidate_layout();
    queue_redraw();
}
 
bool editor_edit_unit::check_id(const std::string& id) {
    for(char c : id) {
        if (!(std::isalnum(c) || c == '_' || c == ' ')) {
            // One bad char means entire id string is invalid
            return false;
        }
    }
    return true;
}
 
void editor_edit_unit::button_state_change() {
    std::string id = find_widget<text_box>("id_box").get_value();
    std::string name = find_widget<text_box>("name_box").get_value();
 
    find_widget<button>("ok").set_active(!id.empty() && !name.empty() && check_id(id));
 
    queue_redraw();
}
 
void editor_edit_unit::quit_confirmation() {
    const std::string& message
        = _("Unsaved changes will be lost. Do you want to leave?");
    if(gui2::show_message(_("Confirm"), message, message::yes_no_buttons) == gui2::retval::OK) {
        set_retval(gui2::retval::CANCEL);
    }
}
 
void editor_edit_unit::write() {
    // Write the file
    update_wml_view();
 
    std::string unit_name = type_cfg_.mandatory_child("unit_type")["name"];
    boost::algorithm::replace_all(unit_name, " ", "_");
 
    // Path to <unit_type_name>.cfg
    std::string unit_path = filesystem::get_current_editor_dir(addon_id_) + "/units/" + unit_name + filesystem::wml_extension;
 
    // Write to file
    try {
        filesystem::write_file(unit_path, generated_wml);
        gui2::show_transient_message("", _("Unit type saved."));
    } catch(const filesystem::io_exception& e) {
        gui2::show_transient_message("", e.what());
    }
}
 
void editor_edit_unit::signal_handler_sdl_key_down(const event::ui_event /*event*/,
                                         bool& handled,
                                         const SDL_Keycode key,
                                         SDL_Keymod modifier)
{
    #ifdef __APPLE__
        // Idiomatic modifier key in macOS computers.
        const SDL_Keycode modifier_key = SDL_KMOD_GUI;
    #else
        // Idiomatic modifier key in Microsoft desktop environments. Common in
        // GNU/Linux as well, to some extent.
        const SDL_Keycode modifier_key = SDL_KMOD_CTRL;
    #endif
 
    // Ctrl+O shortcut for Load Unit Type
    switch(key) {
        case SDLK_0:
            if (modifier & modifier_key) {
                handled = true;
                load_unit_type();
            }
            break;
    }
 
}
 
}