C_commandHandler.hpp

/*
 * Copyright 2024 Guillaume Guillet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef _FGE_C_COMMANDHANDLER_HPP_INCLUDED
#define _FGE_C_COMMANDHANDLER_HPP_INCLUDED
 
#include "FastEngine/fge_extern.hpp"
#include "FastEngine/C_property.hpp"
#include <string>
#include <unordered_map>
#include <vector>
 
#define FGE_CMD_FUNC(x) static_cast<fge::CommandFunction>(x)
 
namespace fge
{
 
class CommandHandler;
class Scene;
class Object;
 
using CommandFunction = fge::Property (CommandHandler::*)(fge::Object* caller,
                                                          fge::Property const& arg,
                                                          fge::Scene* caller_scene);
 
class FGE_API CommandHandler
{
public:
    struct CommandData
    {
        fge::CommandHandler* _handle;
        fge::CommandFunction _func;
        std::string _name;
    };
 
    using CommandDataType = std::vector<fge::CommandHandler::CommandData>;
 
    CommandHandler();
 
    bool addCmd(std::string_view name, fge::CommandHandler* handle, fge::CommandFunction cmdfunc);
    void delCmd(std::string_view name);
    bool replaceCmd(std::string_view name, fge::CommandHandler* handle, fge::CommandFunction cmdfunc);
 
    void clearCmd();
 
    fge::Property
    callCmd(std::string_view name, fge::Object* caller, fge::Property const& arg, fge::Scene* caller_scene);
    fge::Property callCmd(std::size_t index, fge::Object* caller, fge::Property const& arg, fge::Scene* caller_scene);
 
    [[nodiscard]] std::size_t getCmdIndex(std::string_view name) const;
    [[nodiscard]] std::string_view getCmdName(std::size_t index) const;
 
    [[nodiscard]] fge::CommandHandler::CommandData const* getCmd(std::string_view name) const;
 
    [[nodiscard]] std::size_t getCmdSize() const;
 
    [[nodiscard]] fge::CommandHandler::CommandDataType const& getCmdList() const;
 
private:
    fge::CommandHandler::CommandDataType g_cmdData;
    std::unordered_map<std::string_view, std::size_t> g_cmdDataMap;
};
 
} // namespace fge
 
#endif // _FGE_C_COMMANDHANDLER_HPP_INCLUDED