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/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2019 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include <sight/core/config.hpp>
#include <core/base_object.hpp>
namespace sight::core::com
{
/**
* @brief Base class for Slot connection implementation.
* This class is for internal use purpose.
*/
struct SIGHT_CORE_CLASS_API slot_connection_base : core::base_object
{
/**
* @name Typedefs
* @{ */
using sptr = std::shared_ptr<slot_connection_base>;
using csptr = std::shared_ptr<const slot_connection_base>;
using wptr = std::weak_ptr<slot_connection_base>;
using cwptr = std::weak_ptr<const slot_connection_base>;
using blocker_sptr_type = std::shared_ptr<void>;
using blocker_wptr_type = std::weak_ptr<void>;
/** @} */
slot_connection_base()
= default;
/// Disconnect a Slot from this connection.
virtual void disconnect() = 0;
/// Returns a .. to block this connection.
virtual blocker_sptr_type get_blocker() = 0;
protected:
/// Copy constructor forbidden
slot_connection_base(const slot_connection_base&);
/// Copy operator forbidden
slot_connection_base& operator=(const slot_connection_base&);
/**
* @name SlotConnectionBase's friends
* @{ */
template<typename F>
friend struct signal;
/** @} */
/// *NOT THREAD SAFE* Disconnect a Slot from this connection.
virtual void disconnect_weak_lock() = 0;
/// *NOT THREAD SAFE* Connect the related Signal and Slot together.
virtual void connect_no_lock() = 0;
};
} // namespace sight::core::com
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