/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** 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
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****************************************************************************/

#ifndef DEFINITIONDOWNLOADER_H
#define DEFINITIONDOWNLOADER_H

#include <QObject>
#include <QString>
#include <QUrl>

QT_BEGIN_NAMESPACE
class QNetworkReply;
class QNetworkAccessManager;
QT_END_NAMESPACE

namespace TextEditor {
namespace Internal {

class DefinitionDownloader : public QObject
{
    Q_OBJECT
public:
    DefinitionDownloader(const QUrl &url, const QString &localPath);

    enum Status {
        NetworkError,
        WriteError,
        Ok,
        Unknown
    };

    void run();
    Status status() const;

private:
    QNetworkReply *getData(QNetworkAccessManager *manager) const;
    void saveData(QNetworkReply *reply);

    QUrl m_url;
    QString m_localPath;
    Status m_status;
};

// Currently QtConcurrent::map does not support passing member functions for sequence of pointers
// (only works for operator.*) which is the case for the downloaders held by the manager. Then the
// reason for the following functor. If something is implemented (for example a type traits) to
// handle operator->* in QtConcurrent::map this functor will not be necessary since it would be
// possible to directly pass DefinitionDownloader::run.
struct DownloaderStarter
{
    void operator()(DefinitionDownloader *downloader)
    { downloader->run(); }
};

} // namespace Internal
} // namespace TextEditor

#endif // DEFINITIONDOWNLOADER_H