QFuture based asynchronous Task implementation.

Change-Id: I538a2fc40b67d6d27f120afe3705065ab98f8f99
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>

1 files changed, 116 insertions, 0 deletions

diff --git a/src/libs/installer/downloadfiletask_p.h b/src/libs/installer/downloadfiletask_p.h
new file mode 100644
index 000000000..66b14767c
--- /dev/null
+++ b/src/libs/installer/downloadfiletask_p.h
@@ -0,0 +1,116 @@
+/**************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#ifndef DOWNLOADFILETASK_P_H
+#define DOWNLOADFILETASK_P_H
+
+#include "downloadfiletask.h"
+
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+
+QT_BEGIN_NAMESPACE
+class QFile;
+class QSslError;
+QT_END_NAMESPACE
+
+namespace QInstaller {
+
+class FileTaskObserver;
+
+struct Data
+{
+    Data()
+        : file(0), observer(0) {}
+    Data(QFile *f, FileTaskObserver *o)
+        : file(f), observer(o) {}
+    Data(QFile *f, FileTaskObserver *o, const QByteArray &e)
+        : file(f), observer(o), expectedCheckSum(e)
+    {}
+    QFile *file;
+    FileTaskObserver *observer;
+    QByteArray expectedCheckSum;
+};
+
+class Downloader : public QObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(Downloader)
+
+public:
+    Downloader();
+    ~Downloader();
+
+    void download(QFutureInterface<FileTaskResult> &fi, const QList<FileTaskItem> &items,
+        const QAuthenticator &authenticator, QNetworkProxyFactory *networkProxyFactory);
+
+signals:
+    void finished();
+
+private slots:
+    void doDownload();
+    void onReadyRead();
+    void onFinished(QNetworkReply *reply);
+    void onError(QNetworkReply::NetworkError error);
+    void onSslErrors(const QList<QSslError> &sslErrors);
+    void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
+    void onAuthenticationRequired(QNetworkReply *reply, QAuthenticator *authenticator);
+
+
+private:
+    bool testCanceled();
+    QNetworkReply *startDownload(const FileTaskItem &item);
+
+private:
+    QFutureInterface<FileTaskResult> *m_futureInterface;
+
+    int m_finished;
+    QNetworkAccessManager m_nam;
+    QList<FileTaskItem> m_items;
+    QAuthenticator m_authenticator;
+    QHash<QNetworkReply*, Data> m_downloads;
+    QMultiHash<QNetworkReply*, QUrl> m_redirects;
+};
+
+}   // namespace QInstaller
+
+#endif // DOWNLOADFILETASK_P_H