stateful_cell.hpp

/*
 * live_cells_cpp
 * Copyright (C) 2024  Alexander Gutev <alex.gutev@gmail.com>
 *
 * 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 LIVE_CELLS_STATEFUL_CELL_HPP
#define LIVE_CELLS_STATEFUL_CELL_HPP
 
#include <memory>
 
#include "observable.hpp"
#include "cell_state.hpp"
 
namespace live_cells {
 
    template <typename S>
    class stateful_cell {
    public:
        template <typename... Args>
        stateful_cell(key_ref k, Args... args) :
            key_(k),
            state(state_manager::global().get<S>(k, args...)) {
        }
 
        key_ref key() const {
            return key_;
        }
 
        void add_observer(observer::ref o) const {
            state->add_observer(o);
        }
 
        void remove_observer(observer::ref o) const {
            state->remove_observer(o);
        }
 
    protected:
        const key_ref key_;
 
        std::shared_ptr<S> state;
    };
 
}  // live_cells
 
#endif /* LIVE_CELLS_STATEFUL_CELL_HPP */