/**************************************************************************** ** ** Copyright (C) 2021 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtQml module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:COMM$ ** ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** $QT_END_LICENSE$ ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ****************************************************************************/ #include "qqmlnetworkaccessmanagerfactory.h" QT_BEGIN_NAMESPACE #if QT_CONFIG(qml_network) /*! \class QQmlNetworkAccessManagerFactory \since 5.0 \inmodule QtQml \brief The QQmlNetworkAccessManagerFactory class creates QNetworkAccessManager instances for a QML engine. A QML engine uses QNetworkAccessManager for all network access. By implementing a factory, it is possible to provide the QML engine with custom QNetworkAccessManager instances with specialized caching, proxy and cookies support. To implement a factory, subclass QQmlNetworkAccessManagerFactory and implement the virtual create() method, then assign it to the relevant QML engine using QQmlEngine::setNetworkAccessManagerFactory(). Note the QML engine may create QNetworkAccessManager instances from multiple threads. Because of this, the implementation of the create() method must be \l{Reentrancy and Thread-Safety}{reentrant}. In addition, the developer should be careful if the signals of the object to be returned from create() are connected to the slots of an object that may be created in a different thread: \list \li The QML engine internally handles all requests, and cleans up any QNetworkReply objects it creates. Receiving the QNetworkAccessManager::finished() signal in another thread may not provide the receiver with a valid reply object if it has already been deleted. \li Authentication details provided to QNetworkAccessManager::authenticationRequired() must be provided immediately, so this signal cannot be connected as a Qt::QueuedConnection (or as the default Qt::AutoConnection from another thread). \endlist For more information about signals and threads, see \l {Threads and QObjects} and \l {Signals and Slots Across Threads}. \sa {C++ Extensions: Network Access Manager Factory Example}{Network Access Manager Factory Example} */ /*! Destroys the factory. The default implementation does nothing. */ QQmlNetworkAccessManagerFactory::~QQmlNetworkAccessManagerFactory() { } /*! \fn QNetworkAccessManager *QQmlNetworkAccessManagerFactory::create(QObject *parent) Creates and returns a network access manager with the specified \a parent. This method must return a new QNetworkAccessManager instance each time it is called. Note: this method may be called by multiple threads, so ensure the implementation of this method is reentrant. */ #endif // qml_network QT_END_NAMESPACE