cppbusinesslogic.cpp

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// Copyright (C) 2026 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// This file simulates hand-written C++ business logic part of the application.

// The UI elements are accessed via ObjectRegistry references.

#include "cppbusinesslogic.h"

CppBusinessLogic::CppBusinessLogic(QQmlEngine *engine, QObject *parent)

    : QObject{parent}

    // Note: If the registered object is dynamically created by e.g. asynchronous loader

    // or in response to user activity, it may not yet be resolved at the time the reference is

    // created. In those cases you should connect to QObjectRegistryRef's objectChanged signal

    // or QMultiObjectRegistryRef's objectAdded signal and handle object connections there.

    m_deleteObjRef = new QObjectRegistryRef(engine, "CppDeleteObjButton", this);

    connect(m_deleteObjRef->object(), SIGNAL(clicked()),

            this, SLOT(handleDeleteObjButtonClicked()));

    m_repeaterObjRef = new QMultiObjectRegistryRef(engine, "CppRepeatedRect", this);

    const auto repeaterObjects = m_repeaterObjRef->objectsList();

    for (auto obj : repeaterObjects) {

        connect(obj, SIGNAL(clicked(QQuickMouseEvent*)),

                this, SLOT(handleRepeaterObjectClicked()));

    // Simple case, only properties are used from this reference, so no connections needed

    m_indexTextRef = new QObjectRegistryRef(engine, "CppIndexText", this);

void CppBusinessLogic::handleDeleteObjButtonClicked()

    m_deleteObjRef->object()->deleteLater();

void CppBusinessLogic::handleRepeaterObjectClicked()

    m_indexTextRef->object()->setProperty(

        "text",

        QString("Cpp clicked index: %1").arg(sender()->property("repeaterIndex").toInt()));