fvupdater.h

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/***************************************************************************************************
 **
 **  Copyright (c) 2012 Linas Valiukas and others.
 **
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 *copy of this
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 *the Software
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 *and to
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 *following conditions:
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 *all copies or
 **  substantial portions of the Software.
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#ifndef FVUPDATER_H
#define FVUPDATER_H
 
#include <QMetaObject>
#include <QMutex>
#include <QNetworkAccessManager>
#include <QObject>
#include <QPointer>
#include <QString>
#include <QUrl>
#include <QNetworkReply>
#include <QtGlobal>
 
extern const QString defaultFeedURL;
class QFile;
class FvUpdater : public QObject {
    Q_OBJECT
 
public:
    // Singleton
    static FvUpdater *sharedUpdater();
    static void       drop();
 
    // Set / get feed URL
    void    SetFeedURL(const QUrl &feedURL);
    void    SetFeedURL(const QString &feedURL);
    QString GetFeedURL() const;
 
    bool IsDropOnFinish() const;
    void SetDropOnFinish(bool value);
signals:
    void setProgress(int);
public slots:
    // Check for updates
    bool CheckForUpdates(bool silentAsMuchAsItCouldGet = true);
 
    // Aliases
    bool CheckForUpdatesSilent();
    bool CheckForUpdatesNotSilent();
 
protected:
    friend class FvUpdateWindow; // Uses GetProposedUpdate() and others
 
 
protected slots:
 
 
private slots:
    void httpFeedDownloadFinished();
    void networkError(QNetworkReply::NetworkError);
    void getFileSize();
 
private:
    //
    // Singleton business
    //
    Q_DISABLE_COPY(FvUpdater)
    FvUpdater();          // Hide main constructor
    virtual ~FvUpdater(); // Hide main destructor
 
    static QPointer<FvUpdater> m_Instance; // Singleton instance
 
    // If true, don't show the error dialogs and the "no updates." dialog
    // (silentAsMuchAsItCouldGet from CheckForUpdates() goes here)
    // Useful for automatic update checking upon application startup.
    bool m_silentAsMuchAsItCouldGet;
 
    //
    // HTTP feed fetcher infrastructure
    //
    QUrl                    m_feedURL; // Feed URL that will be fetched
    QNetworkAccessManager   m_qnam;
    QPointer<QNetworkReply> m_reply;
    bool                    m_httpRequestAborted;
    bool                    m_dropOnFinish;
    int                     m_fileSize{};
    QString                 m_releaseName{};
 
    void startDownloadFeed(const QUrl &url);        // Start downloading feed
    void startDownloadFile(QUrl url, QString name); // Start downloading file
    void fileDownloadFinished(QFile *downloadedFile, QString name);
    void cancelDownloadFeed(); // Stop downloading the current feed
 
    // Dialogs (notifications)
    // Show an error message
    void showErrorDialog(const QString &message,
                         bool           showEvenInSilentMode = false);
    // Show an informational message
    void showInformationDialog(const QString &message,
                               bool           showEvenInSilentMode = false);
 
    bool showConfirmationDialog(const QString &message,
                                bool           showEvenInSilentMode = false);
 
 
    // bool jsonParsing(); //
    bool releaseIsNewer(const QString &releaseTag);
    void getPLatformSpecificInstaller(QJsonArray assets);
};
 
#endif // FVUPDATER_H