valentina/src/libs/fervor/fvupdater.h

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/***************************************************************************************************
**
** Copyright (c) 2012 Linas Valiukas and others.
**
** Permission is hereby granted, free of charge, to any person obtaining a copy of this
** software and associated documentation files (the "Software"), to deal in the Software
** without restriction, including without limitation the rights to use, copy, modify,
** merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
** permit persons to whom the Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in all copies or
** substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
** NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
** DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**
******************************************************************************************************/
#ifndef FVUPDATER_H
#define FVUPDATER_H
#include <QMetaObject>
#include <QMutex>
#include <QNetworkAccessManager>
#include <QObject>
#include <QPointer>
#include <QString>
#include <QUrl>
#include <QXmlStreamReader>
#include <QtGlobal>
#include "fvavailableupdate.h"
#include "fvupdatewindow.h"
extern const QString defaultFeedURL;
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 IsDropOnFinnish() const;
void SetDropOnFinnish(bool value);
public slots:
// Check for updates
bool CheckForUpdates(bool silentAsMuchAsItCouldGet = true);
// Aliases
bool CheckForUpdatesSilent();
bool CheckForUpdatesNotSilent();
protected:
friend class FvUpdateWindow; // Uses GetProposedUpdate() and others
QPointer<FvAvailableUpdate> GetProposedUpdate();
protected slots:
// Update window button slots
void InstallUpdate();
void SkipUpdate();
void RemindMeLater();
// Update confirmation dialog button slots
void UpdateInstallationConfirmed();
private slots:
void httpFeedDownloadFinished();
private:
//
// Singleton business
//
Q_DISABLE_COPY(FvUpdater)
FvUpdater(); // Hide main constructor
virtual ~FvUpdater(); // Hide main destructor
static QPointer<FvUpdater> m_Instance; // Singleton instance
QPointer<FvUpdateWindow> m_updaterWindow; // Updater window (NULL if not shown)
// Available update (NULL if not fetched)
QPointer<FvAvailableUpdate> m_proposedUpdate;
// 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_dropOnFinnish;
QXmlStreamReader m_xml; // XML data collector and parser
void showUpdaterWindowUpdatedWithCurrentUpdateProposal(); // Show updater window
void hideUpdaterWindow(); // Hide + destroy m_updaterWindow
void startDownloadFeed(const QUrl &url); // Start downloading feed
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 xmlParseFeed(); // Parse feed in m_xml
bool searchDownloadedFeedForUpdates(const QString &xmlEnclosureUrl,
const QString &xmlEnclosureVersion,
const QString &xmlEnclosurePlatform);
static bool VersionIsIgnored(const QString &version);
static void IgnoreVersion(const QString &version);
static bool CurrentlyRunningOnPlatform(const QString &platform);
};
#endif // FVUPDATER_H