#ifndef GUI_HPP
#define GUI_HPP

#include <string>
#include <map>
#include <vector>
#include "luastack.hpp"

class GuiElt {
    friend class Gui;
public:
    enum Type {
        TYPE_MENU_ITEM,
    };
private:
    Type type_;
    std::string action_;
    std::string label_;

    GuiElt() {}
public:
    ~GuiElt() {}
    Type type() const { return type_; }
    const std::string &action() const { return action_; }
    const std::string &label() const { return label_; }
};

class Gui {
public:
    using EltVec = std::vector<GuiElt>;
private:
    EltVec elts_;
public:
    const EltVec &elts() const { return elts_; }
    void clear() { elts_.clear(); }
    bool has_action(const std::string &action) const;
    void menu_item(const std::string &action, const std::string &label);

    // Put a pointer to a gui into the lua registry.
    //
    // All lua commands that manipulate the GUI implicitly
    // operate on this global gui pointer.
    //
    static void store_global_pointer(lua_State *L, Gui *g);
    static Gui *fetch_global_pointer(lua_State *L);
};

using GuiResult = std::map<std::string, std::string>;

#endif // GUI_HPP