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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdeclarativenetworkaccessmanagerfactory.h"
QT_BEGIN_NAMESPACE
/*!
\class QDeclarativeNetworkAccessManagerFactory
\since 4.7
\brief The QDeclarativeNetworkAccessManagerFactory 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 QDeclarativeNetworkAccessManagerFactory and
implement the virtual create() method, then assign it to the relevant QML
engine using QDeclarativeEngine::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
\o 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.
\o 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 {declarative/cppextensions/networkaccessmanagerfactory}{NetworkAccessManagerFactory example}
*/
/*!
Destroys the factory. The default implementation does nothing.
*/
QDeclarativeNetworkAccessManagerFactory::~QDeclarativeNetworkAccessManagerFactory()
{
}
/*!
\fn QNetworkAccessManager *QDeclarativeNetworkAccessManagerFactory::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.
*/
QT_END_NAMESPACE
|
