AObjectBase.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
 
#pragma once
 
#include <AUI/Thread/AMutex.h>
#include <AUI/Traits/concepts.h>
#include <AUI/Traits/members.h>
 
#include "AUI/Common/AVector.h"
#include "AUI/Core.h"
#include "AUI/Traits/values.h"
#include "SharedPtrTypes.h"
#include <AUI/Common/AAbstractSignal.h>
 
class API_AUI_CORE AObjectBase {
   /* ASignal <-> AObject implementation stuff */
   friend class AAbstractSignal;
 
   /* tests */
   friend class SignalSlotTest;
   friend class PropertyTest;
   friend class PropertyPrecomputedTest;
 
public:
   virtual ~AObjectBase() = default;
   AObjectBase() = default;
 
   static ASpinlockMutex SIGNAL_SLOT_GLOBAL_SYNC;
 
   AObjectBase(AObjectBase&& rhs) noexcept {
       operator=(std::move(rhs));
   }
 
   AObjectBase(const AObjectBase& rhs) noexcept {
       // mIngoingConnections are not borrowed on copy operation.
   }
 
   AObjectBase& operator=(const AObjectBase& rhs) noexcept {
       // mIngoingConnections are not borrowed on copy operation.
       return *this;
   }
 
   AObjectBase& operator=(AObjectBase&& rhs) noexcept {
       if (this == &rhs) {
           return *this;
       }
       AUI_ASSERTX(rhs.mIngoingConnections.empty(), "AObjectBase move is valid only if no signals connected to it");
       return *this;
   }
 
protected:
   void clearAllIngoingConnections() noexcept;

   virtual void handleSlotException(std::exception_ptr exception);
 
private:
   struct ReceiverConnectionOwner {
       _<AAbstractSignal::Connection> value = nullptr;
 
       ReceiverConnectionOwner() = default;
       explicit ReceiverConnectionOwner(_<AAbstractSignal::Connection> connection) noexcept
         : value(std::move(connection)) {}
       ReceiverConnectionOwner(const ReceiverConnectionOwner&) = default;
       ReceiverConnectionOwner(ReceiverConnectionOwner&&) noexcept = default;
       ReceiverConnectionOwner& operator=(const ReceiverConnectionOwner& rhs) {
           if (this == &rhs) {
               return *this;
           }
           release();
           value = rhs.value;
           return *this;
       }
 
       ReceiverConnectionOwner& operator=(ReceiverConnectionOwner&& rhs) noexcept {
           if (this == &rhs) {
               return *this;
           }
           release();
           value = std::move(rhs.value);
           return *this;
       }
 
       ~ReceiverConnectionOwner() {
           release();
       }
 
   private:
       void release() noexcept {
           if (!value) {
               return;
           }
           value->onBeforeReceiverSideDestroyed();
       }
   };
 
   AVector<ReceiverConnectionOwner> mIngoingConnections;
};

© 2025 AUI Framework Contributors. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. All trademarks are property of their respective owners.