downloadmanager.h Example File

browser/downloadmanager.h
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company 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 DOWNLOADMANAGER_H
#define DOWNLOADMANAGER_H

#include "ui_downloads.h"
#include "ui_downloaditem.h"

#include <QtCore/QFileInfo>
#include <QtCore/QTime>
#include <QtCore/QUrl>

#include <QWebEngineDownloadItem>

class DownloadManager;
class DownloadWidget : public QWidget, public Ui_DownloadItem
{
    Q_OBJECT

signals:
    void statusChanged();

public:
    DownloadWidget(QWebEngineDownloadItem *download, QWidget *parent = 0);
    bool downloading() const;
    bool downloadedSuccessfully() const;

    void init();
    bool getFileName(bool promptForFileName = false);

private slots:
    void stop();
    void open();

    void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
    void finished();

private:
    friend class DownloadManager;
    void updateInfoLabel();
    QString dataString(int size) const;

    QUrl m_url;
    QFileInfo m_file;
    qint64 m_bytesReceived;
    QTime m_downloadTime;
    bool m_stopped;

    QScopedPointer<QWebEngineDownloadItem> m_download;
};

class AutoSaver;
class DownloadModel;
class QFileIconProvider;

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(QWebEngineDownloadItem *download);
    void cleanup();

private slots:
    void save() const;
    void updateRow();

private:
    void addItem(DownloadWidget *item);
    void updateItemCount();
    void load();

    AutoSaver *m_autoSaver;
    DownloadModel *m_model;
    QFileIconProvider *m_iconProvider;
    QList<DownloadWidget*> 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

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.