UpdateCheck: Clean up Application class and move most to updater.

Add the update timer also to the update class and remove all the
proxy slots from the Application class.

src/gui/application.cpp

@@ -178,11 +178,14 @@ Application::Application(int &argc, char **argv) :
     QTimer::singleShot( 0, this, SLOT( slotCheckConnection() ));
 
     // Update checks
-    _updaterTimer.setInterval(cfg.updateCheckInterval()); // check every couple of hours as defined in config
-
-    connect(&_updaterTimer, SIGNAL(timeout()), this, SLOT(slotStartUpdateDetector()));
-    QTimer::singleShot( 3000, this, SLOT( slotStartUpdateDetector() ));
+    if (OCUpdater *updater = dynamic_cast<OCUpdater*>(Updater::instance())) {
+        connect(updater,  SIGNAL(downloadStateChanged()),
+                this,     SLOT(slotNotifyAboutAvailableUpdate()), Qt::UniqueConnection);
+        connect(updater,  SIGNAL(newUpdateAvailable(QString,QString)),
+                _gui,     SLOT(slotShowTrayMessage(QString,QString)) );
+    }
 
+    // Cleanup at Quit.
     connect (this, SIGNAL(aboutToQuit()), SLOT(slotCleanup()));
 
 }
@@ -249,34 +252,6 @@ void Application::slotCleanup()
     _gui->deleteLater();
 }
 
-void Application::slotStartUpdateDetector()
-{
-    ConfigFile cfg;
-
-    if( cfg.skipUpdateCheck() ) {
-        qDebug() << Q_FUNC_INFO << "Skipping update check because of config file";
-    } else {
-        if (OCUpdater *updater = dynamic_cast<OCUpdater*>(Updater::instance())) {
-            connect(updater, SIGNAL(downloadStateChanged()), this,
-                    SLOT(slotNotifyAboutAvailableUpdate()), Qt::UniqueConnection);
-
-            updater->backgroundCheckForUpdate();
-        }
-    }
-}
-
-void Application::slotNotifyAboutAvailableUpdate()
-{
-    if( _gui ) {
-        if (OCUpdater *updater = dynamic_cast<OCUpdater*>(Updater::instance())) {
-            // Show a tray message if an Update is ready...
-            if( updater->downloadState() == OCUpdater::DownloadComplete ) {
-                _gui->slotShowTrayMessage( tr("Update Check"), updater->statusString() );
-            }
-        }
-    }
-}
-
 void Application::slotCheckConnection()
 {
     AccountState *accountState = AccountStateManager::instance()->accountState();

src/gui/application.h

@@ -75,7 +75,6 @@ protected slots:
     void slotParseMessage(const QString&, QObject*);
     void slotCheckConnection();
     void slotUpdateConnectionErrors(int accountState);
-    void slotStartUpdateDetector();
     void slotUseMonoIconsChanged( bool );
     void slotLogin();
     void slotLogout();
@@ -84,7 +83,6 @@ protected slots:
     void slotAccountStateRemoved(AccountState *accountState);
     void slotAccountStateChanged(int state);
     void slotCrash();
-    void slotNotifyAboutAvailableUpdate();
 
 private:
     void setHelp();
@@ -108,7 +106,6 @@ private:
     ClientProxy _proxy;
 
     QTimer _checkConnectionTimer;
-    QTimer _updaterTimer;
 
 #if defined(WITH_CRASHREPORTER)
     QScopedPointer<CrashReporter::Handler> _crashHandler;

src/gui/updater/ocupdater.cpp

@@ -42,8 +42,19 @@ OCUpdater::OCUpdater(const QUrl &url, QObject *parent) :
   , _updateUrl(url)
   , _state(Unknown)
   , _accessManager(new AccessManager(this))
-  , _timer(new QTimer(this))
+  , _timeoutWatchdog(new QTimer(this))
+  , _updateCheckTimer(new QTimer(this))
 {
+    // at startup, do a check in any case.
+    QTimer::singleShot( 3000, this, SLOT( backgroundCheckForUpdate()));
+
+    // connect the timer to the check slot
+    connect( _updateCheckTimer, SIGNAL(timeout()), this, SLOT(backgroundCheckForUpdate()));
+    // and set the timer regular interval which is usually large, like 10 hours.
+    ConfigFile cfg;
+    auto checkInterval = cfg.updateCheckInterval();
+    qDebug() << "Setting up regular update check every " << checkInterval /1000/60 << "seconds";
+   _updateCheckTimer->setInterval(checkInterval); // check every couple of hours as defined in config
 }
 
 bool OCUpdater::performUpdate()
@@ -67,14 +78,29 @@ void OCUpdater::backgroundCheckForUpdate()
 {
     int dlState = downloadState();
 
-     if( dlState == Unknown ||
-             dlState == UpToDate         ||
-             /* dlState == DownloadComplete ||  <- are we checking if a previous download was successful already? */
-             dlState == DownloadFailed   ||
-             dlState == DownloadTimedOut ) {
-         // how about  UpdateOnlyAvailableThroughSystem?
-         checkForUpdate();
-     }
+    ConfigFile cfg;
+
+    if( cfg.skipUpdateCheck() ) {
+        qDebug() << Q_FUNC_INFO << "Skipping update check because of config file";
+        return;
+    }
+
+    // do the real update check depending on the internal state of updater.
+    switch( dlState ) {
+    case Unknown:
+    case UpToDate:
+    case DownloadFailed:
+    case DownloadTimedOut:
+        qDebug() << Q_FUNC_INFO << "checking for available update";
+        checkForUpdate();
+        break;
+    case DownloadComplete:
+        qDebug() << "Update is downloaded, skip new check.";
+        break;
+    case UpdateOnlyAvailableThroughSystem:
+        qDebug() << "Update is only available through system, skip check.";
+        break;
+    }
 }
 
 QString OCUpdater::statusString() const
@@ -112,6 +138,10 @@ void OCUpdater::setDownloadState(DownloadState state)
 {
     _state = state;
     emit downloadStateChanged();
+
+    if( _state == OCUpdater::DownloadComplete ) {
+        emit newUpdateAvailable(tr("Update Check"), statusString() );
+    }
 }
 
 void OCUpdater::slotStartInstaller()
@@ -128,8 +158,8 @@ void OCUpdater::slotStartInstaller()
 void OCUpdater::checkForUpdate()
 {
     QNetworkReply *reply = _accessManager->get(QNetworkRequest(_updateUrl));
-    connect(_timer, SIGNAL(timeout()), this, SLOT(slotTimedOut()));
-    _timer->start(30*1000);
+    connect(_timeoutWatchdog, SIGNAL(timeout()), this, SLOT(slotTimedOut()));
+    _timeoutWatchdog->start(30*1000);
     connect(reply, SIGNAL(finished()), this, SLOT(slotVersionInfoArrived()));
 
     setDownloadState(CheckingServer);
@@ -152,7 +182,7 @@ bool OCUpdater::updateSucceeded() const
 
 void OCUpdater::slotVersionInfoArrived()
 {
-    _timer->stop();
+    _timeoutWatchdog->stop();
     QNetworkReply *reply = qobject_cast<QNetworkReply*>(sender());
     if( reply->error() != QNetworkReply::NoError ) {
         qDebug() << "Failed to reach version check url: " << reply->errorString();

src/gui/updater/ocupdater.h

@@ -42,7 +42,6 @@ public:
     bool performUpdate();
 
     void checkForUpdate() Q_DECL_OVERRIDE;
-    void backgroundCheckForUpdate() Q_DECL_OVERRIDE;
 
     QString statusString() const;
     int downloadState() const;
@@ -50,11 +49,14 @@ public:
 
 signals:
     void downloadStateChanged();
+    void newUpdateAvailable(const QString& header, const QString& message);
 
 public slots:
     void slotStartInstaller();
 
 private slots:
+    void backgroundCheckForUpdate() Q_DECL_OVERRIDE;
+
     void slotOpenUpdateUrl();
     void slotVersionInfoArrived();
     void slotTimedOut();
@@ -68,7 +70,8 @@ private:
     QUrl _updateUrl;
     int _state;
     QNetworkAccessManager *_accessManager;
-    QTimer *_timer;
+    QTimer *_timeoutWatchdog;  /** Timer to guard the timeout of an individual network request */
+    QTimer *_updateCheckTimer; /** Timer for the regular update check. */
     UpdateInfo _updateInfo;
 };
 

src/gui/updater/updater.cpp

@@ -96,6 +96,7 @@ Updater *Updater::create()
 #else
     return new PassiveUpdateNotifier(QUrl(updateBaseUrl));
 #endif
+
 }