Fixed #122.

resources/binaries

@@ -1 +1 @@
-Subproject commit 1bb36a305e8a23de1e4f3609d8fc4dfeb85ba6fe
+Subproject commit aea11879635d0d6b029a7f6d49d1f31dd95b3c05

src/gui/dialogs/formmain.cpp

@@ -132,6 +132,7 @@ QList<QAction*> FormMain::allActions() const {
   actions << m_ui->m_actionDownloadManager;
   actions << m_ui->m_actionRestoreDatabaseSettings;
   actions << m_ui->m_actionBackupDatabaseSettings;
+  actions << m_ui->m_actionRestart;
   actions << m_ui->m_actionQuit;
   actions << m_ui->m_actionFullscreen;
   actions << m_ui->m_actionAboutGuard;
@@ -449,6 +450,7 @@ void FormMain::setupIcons() {
   m_ui->m_actionDownloadManager->setIcon(icon_theme_factory->fromTheme(QSL("emblem-downloads")));
   m_ui->m_actionSettings->setIcon(icon_theme_factory->fromTheme(QSL("document-properties")));
   m_ui->m_actionQuit->setIcon(icon_theme_factory->fromTheme(QSL("application-exit")));
+  m_ui->m_actionRestart->setIcon(icon_theme_factory->fromTheme(QSL("view-refresh")));
   m_ui->m_actionAboutGuard->setIcon(icon_theme_factory->fromTheme(QSL("help-about")));
   m_ui->m_actionCheckForUpdates->setIcon(icon_theme_factory->fromTheme(QSL("system-upgrade")));
   m_ui->m_actionCleanupDatabase->setIcon(icon_theme_factory->fromTheme(QSL("edit-clear")));
@@ -595,6 +597,7 @@ void FormMain::createConnections() {
   connect(m_ui->m_actionRestoreDatabaseSettings, &QAction::triggered, this, &FormMain::restoreDatabaseSettings);
   connect(m_ui->m_actionQuit, &QAction::triggered, qApp, &Application::quit);
   connect(m_ui->m_actionServiceAdd, &QAction::triggered, this, &FormMain::showAddAccountDialog);
+  connect(m_ui->m_actionRestart, &QAction::triggered, qApp, &Application::restart);
 
   // Menu "View" connections.
   connect(m_ui->m_actionFullscreen, &QAction::toggled, this, &FormMain::switchFullscreenMode);
@@ -711,6 +714,10 @@ void FormMain::backupDatabaseSettings() {
 void FormMain::restoreDatabaseSettings() {
   QScopedPointer<FormRestoreDatabaseSettings> form(new FormRestoreDatabaseSettings(this));
   form->exec();
+
+  if (form->shouldRestart()) {
+    qApp->restart();
+  }
 }
 
 void FormMain::changeEvent(QEvent *event) {

src/gui/dialogs/formmain.ui

@@ -55,6 +55,7 @@
     <addaction name="m_actionRestoreDatabaseSettings"/>
     <addaction name="m_actionBackupDatabaseSettings"/>
     <addaction name="separator"/>
+    <addaction name="m_actionRestart"/>
     <addaction name="m_actionQuit"/>
    </widget>
    <widget class="QMenu" name="m_menuHelp">
@@ -533,6 +534,14 @@
     <string notr="true"/>
    </property>
   </action>
+  <action name="m_actionRestart">
+   <property name="text">
+    <string>&amp;Restart</string>
+   </property>
+   <property name="shortcut">
+    <string notr="true"/>
+   </property>
+  </action>
   <action name="m_actionRestoreDatabaseSettings">
    <property name="text">
     <string>&amp;Restore database/settings</string>

src/gui/dialogs/formrestoredatabasesettings.cpp

@@ -26,18 +26,23 @@
 
 
 FormRestoreDatabaseSettings::FormRestoreDatabaseSettings(QWidget *parent)
-  : QDialog(parent), m_ui(new Ui::FormRestoreDatabaseSettings) {
+  : QDialog(parent), m_ui(new Ui::FormRestoreDatabaseSettings), m_shouldRestart(false) {
   m_ui->setupUi(this);
 
+  m_btnRestart = m_ui->m_buttonBox->addButton(tr("Restart"), QDialogButtonBox::ActionRole);
   m_ui->m_lblResult->setStatus(WidgetWithStatus::Warning, tr("No operation executed yet."), tr("No operation executed yet."));
 
   setWindowIcon(qApp->icons()->fromTheme(QSL("document-import")));
   setWindowFlags(Qt::MSWindowsFixedSizeDialogHint | Qt::Dialog | Qt::WindowSystemMenuHint);
 
-  connect(m_ui->m_btnSelectFolder, &QPushButton::clicked, this, &FormRestoreDatabaseSettings::selectFolderWithGui);
+  connect(m_btnRestart, &QPushButton::clicked, this, [=]() {
-  connect(m_ui->m_groupDatabase, &QGroupBox::toggled, this, &FormRestoreDatabaseSettings::checkOkButton);
+    m_shouldRestart = true;
-  connect(m_ui->m_groupSettings, &QGroupBox::toggled, this, &FormRestoreDatabaseSettings::checkOkButton);
+    close();
-  connect(m_ui->m_buttonBox->button(QDialogButtonBox::Ok), &QPushButton::clicked, this, &FormRestoreDatabaseSettings::performRestoration);
+  });
+  connect(m_ui->m_btnSelectFolder, SIGNAL(clicked()), this, SLOT(selectFolder()));
+  connect(m_ui->m_groupDatabase, SIGNAL(toggled(bool)), this, SLOT(checkOkButton()));
+  connect(m_ui->m_groupSettings, SIGNAL(toggled(bool)), this, SLOT(checkOkButton()));
+  connect(m_ui->m_buttonBox->button(QDialogButtonBox::Ok), SIGNAL(clicked()), this, SLOT(performRestoration()));
 
   selectFolder(qApp->getDocumentsFolderPath());
 }
@@ -58,6 +63,7 @@ void FormRestoreDatabaseSettings::performRestoration() {
                                   m_ui->m_listSettings->currentRow() >= 0 ?
                                     m_ui->m_listSettings->currentItem()->data(Qt::UserRole).toString() :
                                     QString());
+    m_btnRestart->setEnabled(true);
     m_ui->m_lblResult->setStatus(WidgetWithStatus::Ok, tr("Restoration was initiated. Restart to proceed."),
                                  tr("You need to restart application for restoration process to finish."));
   }
@@ -68,6 +74,7 @@ void FormRestoreDatabaseSettings::performRestoration() {
 }
 
 void FormRestoreDatabaseSettings::checkOkButton() {
+  m_btnRestart->setEnabled(false);
   m_ui->m_buttonBox->button(QDialogButtonBox::Ok)->setEnabled(!m_ui->m_lblSelectFolder->label()->text().isEmpty() &&
                                                               ((m_ui->m_groupDatabase->isChecked() &&
                                                                 m_ui->m_listDatabase->currentRow() >= 0) ||

src/gui/dialogs/formrestoredatabasesettings.h

@@ -31,6 +31,10 @@ class FormRestoreDatabaseSettings : public QDialog {
     explicit FormRestoreDatabaseSettings(QWidget *parent = 0);
     virtual ~FormRestoreDatabaseSettings();
 
+    bool shouldRestart() const {
+      return m_shouldRestart;
+    }
+
   private slots:
     void performRestoration();
     void checkOkButton();
@@ -39,6 +43,9 @@ class FormRestoreDatabaseSettings : public QDialog {
 
   private:
     QScopedPointer<Ui::FormRestoreDatabaseSettings> m_ui;
+    QPushButton *m_btnRestart;
+
+    bool m_shouldRestart;
 };
 
 #endif // FORMRESTOREDATABASESETTINGS_H

src/gui/dialogs/formsettings.cpp

@@ -89,14 +89,18 @@ void FormSettings::applySettings() {
   if (!panels_for_restart.isEmpty()) {
     const QStringList changed_settings_description = panels_for_restart.replaceInStrings(QRegExp(QSL("^")), QString::fromUtf8(" • "));
 
-    MessageBox::show(this,
+    const QMessageBox::StandardButton clicked_button =  MessageBox::show(this,
-                     QMessageBox::Question,
+                                                                         QMessageBox::Question,
-                     tr("Critical settings were changed"),
+                                                                         tr("Critical settings were changed"),
-                     tr("Some critical settings were changed and will be applied after the application gets restarted."
+                                                                         tr("Some critical settings were changed and will be applied after the application gets restarted. "
-                        "\n\nYou have to restart manually."),
+                                                                            "\n\nYou have to restart manually."),
-                     QString(),
+                                                                         tr("Do you want to restart now?"),
-                     tr("Changed categories of settings:\n%1.").arg(changed_settings_description .join(QSL(",\n"))),
+                                                                         tr("Changed categories of settings:\n%1.").arg(changed_settings_description .join(QSL(",\n"))),
-                     QMessageBox::Ok, QMessageBox::Ok);
+                                                                         QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
+
+    if (clicked_button == QMessageBox::Yes) {
+      qApp->restart();
+    }
   }
 
   m_btnApply->setEnabled(false);

src/miscellaneous/application.cpp

@@ -47,7 +47,7 @@ Application::Application(const QString &id, int &argc, char **argv)
     m_feedReader(nullptr),
     m_updateFeedsLock(nullptr), m_userActions(QList<QAction*>()), m_mainForm(nullptr),
     m_trayIcon(nullptr), m_settings(nullptr), m_system(nullptr), m_skins(nullptr),
-    m_localization(nullptr), m_icons(nullptr), m_database(nullptr), m_downloadManager(nullptr) {
+    m_localization(nullptr), m_icons(nullptr), m_database(nullptr), m_downloadManager(nullptr), m_shouldRestart(false) {
   connect(this, &Application::aboutToQuit, this, &Application::onAboutToQuit);
   connect(this, &Application::commitDataRequest, this, &Application::onCommitData);
   connect(this, &Application::saveStateRequest, this, &Application::onSaveState);
@@ -391,6 +391,26 @@ void Application::onAboutToQuit() {
     // that some critical action can be processed right now.
     qDebug("Close lock timed-out.");
   }
+
+  // Now, we can check if application should just quit or restart itself.
+  if (m_shouldRestart) {
+    finish();
+    qDebug("Killing local peer connection to allow another instance to start.");
+
+    // TODO: Start RSS Guard with sleep before it cross-platform way if possible.
+    // sleep 5 && "<rssguard-start>".
+    if (QProcess::startDetached(QString("\"") + QDir::toNativeSeparators(applicationFilePath()) + QString("\""))) {
+      qDebug("New application instance was started.");
+    }
+    else {
+      qWarning("New application instance was not started successfully.");
+    }
+  }
+}
+
+void Application::restart() {
+  m_shouldRestart = true;
+  quit();
 }
 
 #if defined(USE_WEBENGINE)

src/miscellaneous/application.h

@@ -116,6 +116,9 @@ class Application : public QtSingleApplication {
     }
 
   public slots:
+    // Restarts the application.
+    void restart();
+
     // Processes incoming message from another RSS Guard instance.
     void processExecutionMessage(const QString &message);
 
@@ -163,6 +166,7 @@ class Application : public QtSingleApplication {
     IconFactory *m_icons;
     DatabaseFactory *m_database;
     DownloadManager *m_downloadManager;
+    bool m_shouldRestart;
 };
 
 #endif // APPLICATION_H