unit_advance.cpp

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/*
    Copyright (C) 2016 - 2022
    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/unit_advance.hpp"

#include "gui/auxiliary/find_widget.hpp"
#include "gui/widgets/button.hpp"
#include "gui/widgets/image.hpp"
#include "gui/widgets/label.hpp"
#include "gui/widgets/listbox.hpp"
#include "gui/widgets/unit_preview_pane.hpp"
#include "gui/widgets/settings.hpp"
#include "gui/widgets/window.hpp"
#include "units/unit.hpp"
#include "units/types.hpp"
#include "help/help.hpp"

#include <functional>

namespace gui2::dialogs
{

REGISTER_DIALOG(unit_advance)

unit_advance::unit_advance(const std::vector<unit_const_ptr>& samples, std::size_t real)
    : previews_(samples)
    , selected_index_(0)
    , last_real_advancement_(real)
{
}

void unit_advance::pre_show(window& window)
{
    listbox& list = find_widget<listbox>(&window, "advance_choice", false);

    connect_signal_notify_modified(list, std::bind(&unit_advance::list_item_clicked, this));

    window.keyboard_capture(&list);

    connect_signal_mouse_left_click(
        find_widget<button>(&window, "show_help", false),
        std::bind(&unit_advance::show_help, this));

    for(std::size_t i = 0; i < previews_.size(); i++) {
        const unit& sample = *previews_[i];

        std::map<std::string, string_map> row_data;
        string_map column;

        std::string image_string, name = sample.type_name();

        // This checks if we've finished iterating over the last unit type advancements
        // and are into the modification-based advancements.
        if(i >= last_real_advancement_) {
            const auto& back = sample.get_modifications().child_range("advancement").back();

            if(back.has_attribute("image")) {
                image_string = back["image"].str();
            }

            name = back["description"].str();
        }

        if(image_string.empty()) {
            image_string = sample.type().image() + sample.image_mods();
        }

        column["label"] = image_string;
        row_data.emplace("advancement_image", column);

        column["label"] = name;
        row_data.emplace("advancement_name", column);

        list.add_row(row_data);
    }

    list_item_clicked();

    // Disable ESC existing
    window.set_escape_disabled(true);
}

void unit_advance::list_item_clicked()
{
    const int selected_row
        = find_widget<listbox>(get_window(), "advance_choice", false).get_selected_row();

    if(selected_row == -1) {
        return;
    }

    find_widget<unit_preview_pane>(get_window(), "advancement_details", false)
        .set_displayed_unit(*previews_[selected_row]);
}

void unit_advance::show_help()
{
    help::show_help("advancement");
}

void unit_advance::post_show(window& window)
{
    if(get_retval() == retval::OK) {
        selected_index_ = find_widget<listbox>(&window, "advance_choice", false)
            .get_selected_row();
    }
}

} // namespace dialogs