object.hpp

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// object.hpp
/*
 *  Copyright (c) 2018, 2020 Leigh Johnston.
 *
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *     * Neither the name of Leigh Johnston nor the names of any
 *       other contributors to this software may be used to endorse or
 *       promote products derived from this software without specific prior
 *       written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 *  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#pragma once
 
#include <neolib/neolib.hpp>
#include <neolib/core/lifetime.hpp>
#include <neolib/task/event.hpp>
#include <neolib/task/event.hpp>
#include <neolib/app/i_object.hpp>
 
namespace neolib
{
    template <typename Base = i_object>
    class object : public lifetime<Base>
    {
        typedef lifetime<Base> base_type;
    public:
        define_declared_event(Destroying, destroying);
        define_declared_event(Destroyed, destroyed);
    public:
        object(lifetime_state aState = lifetime_state::Creating) :
            base_type{ aState }
        {
        }
        ~object()
        {
            set_destroyed();
        }
        // i_lifetime
    public:
        using base_type::is_alive;
        using base_type::is_destroyed;
        void set_destroying() override
        {
            if (is_alive())
            {
                Destroying.trigger();
                base_type::set_destroying();
            }
        }
        void set_destroyed() override
        {
            if (!is_destroyed())
            {
                Destroyed.trigger();
                base_type::set_destroyed();
            }
        }
    };
}