/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the demonstration applications 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.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef DOWNLOADMANAGER_H

#define DOWNLOADMANAGER_H

#include "ui_downloads.h"

#include "ui_downloaditem.h"

#include <QtNetwork/QNetworkReply>

#include <QtCore/QFile>

#include <QtCore/QTime>

class DownloadItem : public QWidget, public Ui_DownloadItem

{

    Q_OBJECT

signals:

    void statusChanged();

public:

    DownloadItem(QNetworkReply *reply = 0, bool requestFileName = false, QWidget *parent = 0);

    bool downloading() const;

    bool downloadedSuccessfully() const;

    QUrl m_url;

    QFile m_output;

    QNetworkReply *m_reply;

private slots:

    void stop();

    void tryAgain();

    void open();

    void downloadReadyRead();

    void error(QNetworkReply::NetworkError code);

    void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);

    void metaDataChanged();

    void finished();

private:

    void getFileName();

    void init();

    void updateInfoLabel();

    QString dataString(int size) const;

    QString saveFileName(const QString &directory) const;

    bool m_requestFileName;

    qint64 m_bytesReceived;

    QTime m_downloadTime;

};

class AutoSaver;

class DownloadModel;

QT_BEGIN_NAMESPACE

class QFileIconProvider;

QT_END_NAMESPACE

class DownloadManager : public QDialog, public Ui_DownloadDialog

{

    Q_OBJECT

    Q_PROPERTY(RemovePolicy removePolicy READ removePolicy WRITE setRemovePolicy)

    Q_ENUMS(RemovePolicy)

public:

    enum RemovePolicy {

        Never,

        Exit,

        SuccessFullDownload

    };

    DownloadManager(QWidget *parent = 0);

    ~DownloadManager();

    int activeDownloads() const;

    RemovePolicy removePolicy() const;

    void setRemovePolicy(RemovePolicy policy);

public slots:

    void download(const QNetworkRequest &request, bool requestFileName = false);

    inline void download(const QUrl &url, bool requestFileName = false)

        { download(QNetworkRequest(url), requestFileName); }

    void handleUnsupportedContent(QNetworkReply *reply, bool requestFileName = false);

    void cleanup();

private slots:

    void save() const;

    void updateRow();

private:

    void addItem(DownloadItem *item);

    void updateItemCount();

    void load();

    AutoSaver *m_autoSaver;

    DownloadModel *m_model;

    QNetworkAccessManager *m_manager;

    QFileIconProvider *m_iconProvider;

    QList<DownloadItem*> m_downloads;

    RemovePolicy m_removePolicy;

    friend class DownloadModel;

};

class DownloadModel : public QAbstractListModel

{

    friend class DownloadManager;

    Q_OBJECT

public:

    DownloadModel(DownloadManager *downloadManager, QObject *parent = 0);

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;

    int rowCount(const QModelIndex &parent = QModelIndex()) const;

    bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex());

private:

    DownloadManager *m_downloadManager;

};

#endif // DOWNLOADMANAGER_H