//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004-2021 musikcube team
//
// All rights reserved.
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// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
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//    * Redistributions of source code must retain the above copyright notice,
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//////////////////////////////////////////////////////////////////////////////

#pragma once

#include <cursespp/IKeyHandler.h>
#include <cursespp/Window.h>
#include <cursespp/Text.h>
#include <functional>

namespace cursespp {
    class ShortcutsWindow:
        public cursespp::Window,
        public cursespp::IKeyHandler
    {
        public:
            using ChangedCallback = std::function<void (std::string /* key */)>;

            ShortcutsWindow();
            virtual ~ShortcutsWindow();

            void SetAlignment(text::TextAlign alignment);

            void AddShortcut(
                const std::string& key,
                const std::string& description,
                int64_t attrs = -1);

            void SetChangedCallback(ChangedCallback callback);

            void RemoveAll();
            void SetActive(const std::string& key);

            bool KeyPress(const std::string& key) override;
            bool ProcessMouseEvent(const IMouseHandler::Event& mouseEvent) override;

        protected:
            void OnRedraw() override;
            void OnFocusChanged(bool focused) override;

        private:
            size_t CalculateLeftPadding();
            int getActiveIndex();

            struct Position {
                int offset{ 0 }, width{ 0 };
            };

            struct Entry {
                Entry(const std::string& key, const std::string& desc, int64_t attrs = -1) {
                    this->key = key;
                    this->description = desc;
                    this->attrs = attrs;
                }

                Position position;
                std::string key;
                std::string description;
                int64_t attrs;
            };

            using EntryList = std::vector<std::shared_ptr<Entry>>;

            ChangedCallback changedCallback;
            EntryList entries;
            std::string activeKey, originalKey;
            text::TextAlign alignment;
    };
}
