Help: Use Qt5-style connects

The heavy lifting was done by clazy.

Change-Id: Ied9c7fcc031e530c41b342de950e2f0ac730bbb1
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

32 files changed, 160 insertions, 222 deletions

diff --git a/src/plugins/help/docsettingspage.h b/src/plugins/help/docsettingspage.h
index e3ea9156db..ffc2c27f5a 100644
--- a/src/plugins/help/docsettingspage.h
+++ b/src/plugins/help/docsettingspage.h
@@ -50,14 +50,12 @@ public:
     void apply();
     void finish();
 
-private slots:
+private:
     void addDocumentation();
 
-private:
     bool eventFilter(QObject *object, QEvent *event);
     void removeDocumentation(const QList<QModelIndex> &items);
 
-private:
     QList<QModelIndex> currentSelection() const;
 
     Ui::DocSettingsPage m_ui;
diff --git a/src/plugins/help/filtersettingspage.cpp b/src/plugins/help/filtersettingspage.cpp
index b83fe2096f..75f2c45968 100644
--- a/src/plugins/help/filtersettingspage.cpp
+++ b/src/plugins/help/filtersettingspage.cpp
@@ -63,8 +63,8 @@ QWidget *FilterSettingsPage::widget()
                 this, &FilterSettingsPage::addFilter);
         connect(m_ui.filterRemoveButton, &QPushButton::clicked,
                 this, &FilterSettingsPage::removeFilter);
-        connect(HelpManager::instance(), SIGNAL(documentationChanged()),
-                this, SLOT(updateFilterPage()));
+        connect(HelpManager::instance(), &HelpManager::documentationChanged,
+                this, &FilterSettingsPage::updateFilterPage);
     }
     return m_widget;
 }
@@ -221,8 +221,8 @@ void FilterSettingsPage::apply()
 
 void FilterSettingsPage::finish()
 {
-    disconnect(HelpManager::instance(), SIGNAL(documentationChanged()),
-        this, SLOT(updateFilterPage()));
+    disconnect(HelpManager::instance(), &HelpManager::documentationChanged,
+               this, &FilterSettingsPage::updateFilterPage);
     delete m_widget;
 }
 
diff --git a/src/plugins/help/filtersettingspage.h b/src/plugins/help/filtersettingspage.h
index 0e5b917bd5..b93f59c052 100644
--- a/src/plugins/help/filtersettingspage.h
+++ b/src/plugins/help/filtersettingspage.h
@@ -47,18 +47,15 @@ public:
 signals:
     void filtersChanged();
 
-private slots:
+private:
     void updateAttributes(QListWidgetItem *item);
     void updateFilterMap();
     void updateFilterPage();
     void addFilter();
     void removeFilter();
-
-private:
     void updateFilterDescription(const QString &filter);
-
-private:
     QString msgFilterLabel(const QString &filter) const;
+
     Ui::FilterSettingsPage m_ui;
     QPointer<QWidget> m_widget;
 
diff --git a/src/plugins/help/generalsettingspage.h b/src/plugins/help/generalsettingspage.h
index d8d133c886..4c5aa1b2c2 100644
--- a/src/plugins/help/generalsettingspage.h
+++ b/src/plugins/help/generalsettingspage.h
@@ -49,20 +49,18 @@ public:
 signals:
     void fontChanged();
 
-private slots:
+private:
     void setCurrentPage();
     void setBlankPage();
     void setDefaultPage();
     void importBookmarks();
     void exportBookmarks();
 
-private:
     void updateFontSize();
     void updateFontStyle();
     void updateFontFamily();
     int closestPointSizeIndex(int desiredPointSize) const;
 
-private:
     QFont m_font;
     QFontDatabase m_fontDatabase;
 
diff --git a/src/plugins/help/helpplugin.cpp b/src/plugins/help/helpplugin.cpp
index 243399489a..b4ec58dca1 100644
--- a/src/plugins/help/helpplugin.cpp
+++ b/src/plugins/help/helpplugin.cpp
@@ -151,24 +151,24 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
     addAutoReleasedObject(m_searchTaskHandler = new SearchTaskHandler);
 
     m_centralWidget = new CentralWidget(Context("Help.CentralHelpWidget"));
-    connect(m_centralWidget, SIGNAL(sourceChanged(QUrl)), this,
-        SLOT(updateSideBarSource(QUrl)));
+    connect(m_centralWidget, &HelpWidget::sourceChanged, this,
+            &HelpPlugin::updateSideBarSource);
     connect(m_centralWidget, &CentralWidget::closeButtonClicked,
             &OpenPagesManager::instance(), &OpenPagesManager::closeCurrentPage);
 
     connect(LocalHelpManager::instance(), &LocalHelpManager::returnOnCloseChanged,
             m_centralWidget, &CentralWidget::updateCloseButton);
-    connect(HelpManager::instance(), SIGNAL(helpRequested(QUrl,Core::HelpManager::HelpViewerLocation)),
-            this, SLOT(handleHelpRequest(QUrl,Core::HelpManager::HelpViewerLocation)));
-    connect(m_searchTaskHandler, SIGNAL(search(QUrl)), this,
-            SLOT(showLinkInHelpMode(QUrl)));
-
-    connect(m_filterSettingsPage, SIGNAL(filtersChanged()), this,
-        SLOT(setupHelpEngineIfNeeded()));
-    connect(HelpManager::instance(), SIGNAL(documentationChanged()), this,
-        SLOT(setupHelpEngineIfNeeded()));
-    connect(HelpManager::instance(), SIGNAL(collectionFileChanged()), this,
-        SLOT(setupHelpEngineIfNeeded()));
+    connect(HelpManager::instance(), &HelpManager::helpRequested,
+            this, &HelpPlugin::handleHelpRequest);
+    connect(m_searchTaskHandler, &SearchTaskHandler::search, this,
+            &HelpPlugin::showLinkInHelpMode);
+
+    connect(m_filterSettingsPage, &FilterSettingsPage::filtersChanged, this,
+        &HelpPlugin::setupHelpEngineIfNeeded);
+    connect(HelpManager::instance(), &HelpManager::documentationChanged, this,
+        &HelpPlugin::setupHelpEngineIfNeeded);
+    connect(HelpManager::instance(), &HelpManager::collectionFileChanged, this,
+        &HelpPlugin::setupHelpEngineIfNeeded);
 
     connect(ToolTip::instance(), &ToolTip::shown, ICore::instance(), []() {
         ICore::addAdditionalContext(Context(kToolTipHelpContext), ICore::ContextPriority::High);
@@ -185,29 +185,29 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
         tr(Constants::SB_CONTENTS), this);
     cmd = ActionManager::registerAction(action, "Help.ContentsMenu");
     ActionManager::actionContainer(Core::Constants::M_HELP)->addAction(cmd, Core::Constants::G_HELP_HELP);
-    connect(action, SIGNAL(triggered()), this, SLOT(activateContents()));
+    connect(action, &QAction::triggered, this, &HelpPlugin::activateContents);
 
     action = new QAction(tr(Constants::SB_INDEX), this);
     cmd = ActionManager::registerAction(action, "Help.IndexMenu");
     ActionManager::actionContainer(Core::Constants::M_HELP)->addAction(cmd, Core::Constants::G_HELP_HELP);
-    connect(action, SIGNAL(triggered()), this, SLOT(activateIndex()));
+    connect(action, &QAction::triggered, this, &HelpPlugin::activateIndex);
 
     action = new QAction(tr("Context Help"), this);
     cmd = ActionManager::registerAction(action, Help::Constants::CONTEXT_HELP,
                                         Context(kToolTipHelpContext, Core::Constants::C_GLOBAL));
     ActionManager::actionContainer(Core::Constants::M_HELP)->addAction(cmd, Core::Constants::G_HELP_HELP);
     cmd->setDefaultKeySequence(QKeySequence(Qt::Key_F1));
-    connect(action, SIGNAL(triggered()), this, SLOT(showContextHelp()));
+    connect(action, &QAction::triggered, this, &HelpPlugin::showContextHelp);
 
     action = new QAction(tr("Technical Support"), this);
     cmd = ActionManager::registerAction(action, "Help.TechSupport");
     ActionManager::actionContainer(Core::Constants::M_HELP)->addAction(cmd, Core::Constants::G_HELP_SUPPORT);
-    connect(action, SIGNAL(triggered()), this, SLOT(slotOpenSupportPage()));
+    connect(action, &QAction::triggered, this, &HelpPlugin::slotOpenSupportPage);
 
     action = new QAction(tr("Report Bug..."), this);
     cmd = ActionManager::registerAction(action, "Help.ReportBug");
     ActionManager::actionContainer(Core::Constants::M_HELP)->addAction(cmd, Core::Constants::G_HELP_SUPPORT);
-    connect(action, SIGNAL(triggered()), this, SLOT(slotReportBug()));
+    connect(action, &QAction::triggered, this, &HelpPlugin::slotReportBug);
 
     if (ActionContainer *windowMenu = ActionManager::actionContainer(Core::Constants::M_WINDOW)) {
         // reuse EditorManager constants to avoid a second pair of menu actions
@@ -216,16 +216,16 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
         Command *ctrlTab = ActionManager::registerAction(action, Core::Constants::GOTOPREVINHISTORY,
             modecontext);
         windowMenu->addAction(ctrlTab, Core::Constants::G_WINDOW_NAVIGATE);
-        connect(action, SIGNAL(triggered()), &OpenPagesManager::instance(),
-            SLOT(gotoPreviousPage()));
+        connect(action, &QAction::triggered, &OpenPagesManager::instance(),
+            &OpenPagesManager::gotoPreviousPage);
 
         // Goto Next In History Action
         action = new QAction(this);
         Command *ctrlShiftTab = ActionManager::registerAction(action, Core::Constants::GOTONEXTINHISTORY,
             modecontext);
         windowMenu->addAction(ctrlShiftTab, Core::Constants::G_WINDOW_NAVIGATE);
-        connect(action, SIGNAL(triggered()), &OpenPagesManager::instance(),
-            SLOT(gotoNextPage()));
+        connect(action, &QAction::triggered, &OpenPagesManager::instance(),
+            &OpenPagesManager::gotoNextPage);
     }
 
     auto helpIndexFilter = new HelpIndexFilter();
@@ -237,8 +237,8 @@ bool HelpPlugin::initialize(const QStringList &arguments, QString *error)
 
     RemoteHelpFilter *remoteHelpFilter = new RemoteHelpFilter();
     addAutoReleasedObject(remoteHelpFilter);
-    connect(remoteHelpFilter, SIGNAL(linkActivated(QUrl)), this,
-        SLOT(showLinkInHelpMode(QUrl)));
+    connect(remoteHelpFilter, &RemoteHelpFilter::linkActivated, this,
+        &HelpPlugin::showLinkInHelpMode);
 
     QDesktopServices::setUrlHandler(QLatin1String("qthelp"), HelpManager::instance(), "handleHelpRequest");
     connect(ModeManager::instance(), &ModeManager::currentModeChanged,
@@ -318,14 +318,14 @@ HelpWidget *HelpPlugin::createHelpWidget(const Context &context, HelpWidget::Wid
 {
     HelpWidget *widget = new HelpWidget(context, style);
 
-    connect(widget->currentViewer(), SIGNAL(loadFinished()),
-            this, SLOT(highlightSearchTermsInContextHelp()));
-    connect(widget, SIGNAL(openHelpMode(QUrl)),
-            this, SLOT(showLinkInHelpMode(QUrl)));
-    connect(widget, SIGNAL(closeButtonClicked()),
-            this, SLOT(slotHideRightPane()));
-    connect(widget, SIGNAL(aboutToClose()),
-            this, SLOT(saveExternalWindowSettings()));
+    connect(widget->currentViewer(), &HelpViewer::loadFinished,
+            this, &HelpPlugin::highlightSearchTermsInContextHelp);
+    connect(widget, &HelpWidget::openHelpMode,
+            this, &HelpPlugin::showLinkInHelpMode);
+    connect(widget, &HelpWidget::closeButtonClicked,
+            this, &HelpPlugin::slotHideRightPane);
+    connect(widget, &HelpWidget::aboutToClose,
+            this, &HelpPlugin::saveExternalWindowSettings);
 
     // force setup, as we might have never switched to full help mode
     // thus the help engine might still run without collection file setup
@@ -455,15 +455,6 @@ void HelpPlugin::modeChanged(Core::Id mode, Core::Id old)
     }
 }
 
-void HelpPlugin::updateSideBarSource()
-{
-    if (HelpViewer *viewer = m_centralWidget->currentViewer()) {
-        const QUrl &url = viewer->source();
-        if (url.isValid())
-            updateSideBarSource(url);
-    }
-}
-
 void HelpPlugin::updateSideBarSource(const QUrl &newUrl)
 {
     if (m_rightPaneSideBarWidget) {
diff --git a/src/plugins/help/helpplugin.h b/src/plugins/help/helpplugin.h
index b4a98a5a7d..7dc4bd6b4b 100644
--- a/src/plugins/help/helpplugin.h
+++ b/src/plugins/help/helpplugin.h
@@ -77,7 +77,7 @@ public:
 
     static HelpViewer *createHelpViewer(qreal zoom);
 
-private slots:
+private:
     void modeChanged(Core::Id mode, Core::Id old);
 
     void showContextHelp();
@@ -89,7 +89,6 @@ private slots:
     void showLinksInHelpMode(const QMap<QString, QUrl> &links, const QString &key);
     void slotHideRightPane();
 
-    void updateSideBarSource();
     void updateSideBarSource(const QUrl &newUrl);
 
     void setupHelpEngineIfNeeded();
@@ -100,7 +99,6 @@ private slots:
     void slotOpenSupportPage();
     void slotReportBug();
 
-private:
     void resetFilter();
     void activateHelpMode();
     bool canShowHelpSideBySide() const;
@@ -112,7 +110,6 @@ private:
 
     void doSetupIfNeeded();
 
-private:
     HelpMode *m_mode;
     CentralWidget *m_centralWidget;
     HelpWidget *m_rightPaneSideBarWidget;
diff --git a/src/plugins/help/helpviewer.h b/src/plugins/help/helpviewer.h
index 4ceccb176f..0cd0a08ed5 100644
--- a/src/plugins/help/helpviewer.h
+++ b/src/plugins/help/helpviewer.h
@@ -77,7 +77,6 @@ public:
     static QString mimeFromUrl(const QUrl &url);
     static bool launchWithExternalApp(const QUrl &url);
 
-public slots:
     void home();
 
     virtual void scaleUp() = 0;
@@ -97,7 +96,7 @@ signals:
     void backwardAvailable(bool);
     void loadFinished();
 
-protected slots:
+protected:
     void slotLoadStarted();
     void slotLoadFinished();
 };
diff --git a/src/plugins/help/helpwidget.cpp b/src/plugins/help/helpwidget.cpp
index 7e81ce4d91..a0a89a5345 100644
--- a/src/plugins/help/helpwidget.cpp
+++ b/src/plugins/help/helpwidget.cpp
@@ -246,7 +246,7 @@ HelpWidget::HelpWidget(const Core::Context &context, WidgetStyle style, QWidget
 
     if (style != ExternalWindow) {
         m_closeAction = new QAction(Core::Icons::CLOSE_TOOLBAR.icon(), QString(), toolBar);
-        connect(m_closeAction, SIGNAL(triggered()), this, SIGNAL(closeButtonClicked()));
+        connect(m_closeAction, &QAction::triggered, this, &HelpWidget::closeButtonClicked);
         button = new QToolButton;
         button->setDefaultAction(m_closeAction);
         layout->addWidget(button);
diff --git a/src/plugins/help/helpwidget.h b/src/plugins/help/helpwidget.h
index 5d29dd3e6b..65bd51052c 100644
--- a/src/plugins/help/helpwidget.h
+++ b/src/plugins/help/helpwidget.h
@@ -78,7 +78,7 @@ public:
                           bool newPage = false);
     void activateSideBarItem(const QString &id);
 
-public slots:
+public:
     void setSource(const QUrl &url);
     void updateCloseButton();
 
@@ -92,13 +92,12 @@ signals:
     void sourceChanged(const QUrl &url);
     void filterActivated(const QString &name);
 
-private slots:
+private:
     void updateBackMenu();
     void updateForwardMenu();
     void updateWindowTitle();
     void helpModeButtonClicked();
 
-private:
     void goHome();
     void addBookmark();
     void copy();
diff --git a/src/plugins/help/macwebkithelpviewer.h b/src/plugins/help/macwebkithelpviewer.h
index 9c4d5ab6ab..e66db6fa73 100644
--- a/src/plugins/help/macwebkithelpviewer.h
+++ b/src/plugins/help/macwebkithelpviewer.h
@@ -47,7 +47,7 @@ class MacResponderHack : public QObject
 public:
     MacResponderHack(QObject *parent);
 
-private slots:
+private:
     void responderHack(QWidget *old, QWidget *now);
 };
 
@@ -109,7 +109,7 @@ public:
 
     MacWebKitHelpWidget *widget() const { return m_widget; }
 
-public slots:
+public:
     void scaleUp();
     void scaleDown();
     void resetScale();
@@ -119,14 +119,12 @@ public slots:
     void backward();
     void print(QPrinter *printer);
 
-public slots:
     void slotLoadStarted();
     void slotLoadFinished();
 
-private slots:
+private:
     void goToHistoryItem();
 
-private:
     DOMRange *findText(NSString *text, bool forward, bool caseSensitive, DOMNode *startNode,
                        int startOffset);
     MacWebKitHelpWidget *m_widget;
diff --git a/src/plugins/help/macwebkithelpviewer.mm b/src/plugins/help/macwebkithelpviewer.mm
index 907073f6b3..e6ec9ea620 100644
--- a/src/plugins/help/macwebkithelpviewer.mm
+++ b/src/plugins/help/macwebkithelpviewer.mm
@@ -657,7 +657,7 @@ void MacWebKitHelpViewer::addBackHistoryItems(QMenu *backMenu)
             QAction *action = new QAction(backMenu);
             action->setText(QString::fromNSString([list itemAtIndex:historyIndex].title));
             action->setData(historyIndex);
-            connect(action, SIGNAL(triggered()), this, SLOT(goToHistoryItem()));
+            connect(action, &QAction::triggered, this, &MacWebKitHelpViewer::goToHistoryItem);
             backMenu->addAction(action);
         }
     }
@@ -673,7 +673,7 @@ void MacWebKitHelpViewer::addForwardHistoryItems(QMenu *forwardMenu)
             QAction *action = new QAction(forwardMenu);
             action->setText(QString::fromNSString([list itemAtIndex:historyIndex].title));
             action->setData(historyIndex);
-            connect(action, SIGNAL(triggered()), this, SLOT(goToHistoryItem()));
+            connect(action, &QAction::triggered, this, &MacWebKitHelpViewer::goToHistoryItem);
             forwardMenu->addAction(action);
         }
     }
@@ -878,8 +878,8 @@ void MacWebKitHelpViewer::goToHistoryItem()
 MacResponderHack::MacResponderHack(QObject *parent)
     : QObject(parent)
 {
-    connect(qApp, SIGNAL(focusChanged(QWidget*,QWidget*)),
-            this, SLOT(responderHack(QWidget*,QWidget*)));
+    connect(qApp, &QApplication::focusChanged,
+            this, &MacResponderHack::responderHack);
 }
 
 void MacResponderHack::responderHack(QWidget *old, QWidget *now)
diff --git a/src/plugins/help/openpagesmanager.cpp b/src/plugins/help/openpagesmanager.cpp
index 735be246b1..2fd78a57bc 100644
--- a/src/plugins/help/openpagesmanager.cpp
+++ b/src/plugins/help/openpagesmanager.cpp
@@ -65,15 +65,16 @@ OpenPagesManager::OpenPagesManager(QObject *parent)
     m_comboBox = new QComboBox;
     m_comboBox->setModel(m_model);
     m_comboBox->setContextMenuPolicy(Qt::CustomContextMenu);
-    connect(m_comboBox, SIGNAL(activated(int)), this, SLOT(setCurrentPage(int)));
-    connect(m_comboBox, SIGNAL(customContextMenuRequested(QPoint)), this,
-        SLOT(openPagesContextMenu(QPoint)));
+    connect(m_comboBox, static_cast<void (QComboBox::*)(int)>(&QComboBox::activated),
+            this, &OpenPagesManager::setCurrentPageByRow);
+    connect(m_comboBox, &QWidget::customContextMenuRequested, this,
+        &OpenPagesManager::openPagesContextMenu);
 
     m_openPagesSwitcher = new OpenPagesSwitcher(m_model);
-    connect(m_openPagesSwitcher, SIGNAL(closePage(QModelIndex)), this,
-        SLOT(closePage(QModelIndex)));
-    connect(m_openPagesSwitcher, SIGNAL(setCurrentPage(QModelIndex)), this,
-        SLOT(setCurrentPage(QModelIndex)));
+    connect(m_openPagesSwitcher, &OpenPagesSwitcher::closePage, this,
+        &OpenPagesManager::closePage);
+    connect(m_openPagesSwitcher, &OpenPagesSwitcher::setCurrentPage,
+            this, &OpenPagesManager::setCurrentPage);
 }
 
 OpenPagesManager ::~OpenPagesManager()
@@ -92,12 +93,12 @@ QWidget *OpenPagesManager::openPagesWidget() const
 {
     if (!m_openPagesWidget) {
         m_openPagesWidget = new OpenPagesWidget(m_model);
-        connect(m_openPagesWidget, SIGNAL(setCurrentPage(QModelIndex)), this,
-            SLOT(setCurrentPage(QModelIndex)));
-        connect(m_openPagesWidget, SIGNAL(closePage(QModelIndex)), this,
-            SLOT(closePage(QModelIndex)));
-        connect(m_openPagesWidget, SIGNAL(closePagesExcept(QModelIndex)), this,
-            SLOT(closePagesExcept(QModelIndex)));
+        connect(m_openPagesWidget, &OpenPagesWidget::setCurrentPage,
+                this, &OpenPagesManager::setCurrentPage);
+        connect(m_openPagesWidget, &OpenPagesWidget::closePage,
+                this, &OpenPagesManager::closePage);
+        connect(m_openPagesWidget, &OpenPagesWidget::closePagesExcept,
+                this, &OpenPagesManager::closePagesExcept);
     }
     return m_openPagesWidget;
 }
@@ -166,13 +167,11 @@ void OpenPagesManager::setupInitialPages()
         CentralWidget::instance()->addViewer(m_model->pageAt(i));
 
     emit pagesChanged();
-    setCurrentPage((initialPage >= m_model->rowCount())
+    setCurrentPageByRow((initialPage >= m_model->rowCount())
         ? m_model->rowCount() - 1 : initialPage);
     m_openPagesSwitcher->selectCurrentPage();
 }
 
-// -- public slots
-
 HelpViewer *OpenPagesManager::createPage()
 {
     return createPage(QUrl(Help::Constants::AboutBlank));
@@ -190,12 +189,12 @@ HelpViewer *OpenPagesManager::createPage(const QUrl &url)
     CentralWidget::instance()->addViewer(page);
 
     emit pagesChanged();
-    setCurrentPage(index);
+    setCurrentPageByRow(index);
 
     return page;
 }
 
-void OpenPagesManager::setCurrentPage(int index)
+void OpenPagesManager::setCurrentPageByRow(int index)
 {
     CentralWidget::instance()->setCurrentViewer(m_model->pageAt(index));
 
@@ -207,7 +206,7 @@ void OpenPagesManager::setCurrentPage(int index)
 void OpenPagesManager::setCurrentPage(const QModelIndex &index)
 {
     if (index.isValid())
-        setCurrentPage(index.row());
+        setCurrentPageByRow(index.row());
 }
 
 void OpenPagesManager::closeCurrentPage()
@@ -299,8 +298,6 @@ void OpenPagesManager::showTwicherOrSelectPage() const
     }
 }
 
-// -- private slots
-
 void OpenPagesManager::openPagesContextMenu(const QPoint &point)
 {
     const QModelIndex &index = m_model->index(m_comboBox->currentIndex(), 0);
diff --git a/src/plugins/help/openpagesmanager.h b/src/plugins/help/openpagesmanager.h
index f27164d20b..203cb37943 100644
--- a/src/plugins/help/openpagesmanager.h
+++ b/src/plugins/help/openpagesmanager.h
@@ -58,11 +58,10 @@ public:
     int pageCount() const;
     void setupInitialPages();
 
-public slots:
     HelpViewer *createPage();
     HelpViewer *createPage(const QUrl &url);
 
-    void setCurrentPage(int index);
+    void setCurrentPageByRow(int index);
     void setCurrentPage(const QModelIndex &index);
 
     void closeCurrentPage();
@@ -78,11 +77,8 @@ signals:
 private:
     void removePage(int index);
     void showTwicherOrSelectPage() const;
-
-private slots:
     void openPagesContextMenu(const QPoint &point);
 
-private:
     QComboBox *m_comboBox;
     OpenPagesModel *m_model;
     mutable OpenPagesWidget *m_openPagesWidget;
diff --git a/src/plugins/help/openpagesmodel.h b/src/plugins/help/openpagesmodel.h
index 3db1cec3b5..feac6040de 100644
--- a/src/plugins/help/openpagesmodel.h
+++ b/src/plugins/help/openpagesmodel.h
@@ -50,10 +50,9 @@ public:
     void removePage(int index);
     HelpViewer *pageAt(int index) const;
 
-private slots:
+private:
     void handleTitleChanged();
 
-private:
     QList<HelpViewer *> m_pages;
 };
 
diff --git a/src/plugins/help/openpageswidget.cpp b/src/plugins/help/openpageswidget.cpp
index 0457737ec8..a6ee23bda0 100644
--- a/src/plugins/help/openpageswidget.cpp
+++ b/src/plugins/help/openpageswidget.cpp
@@ -53,10 +53,10 @@ OpenPagesWidget::OpenPagesWidget(OpenPagesModel *sourceModel, QWidget *parent)
             this, &OpenPagesWidget::handleCloseActivated);
     connect(this, &OpenDocumentsTreeView::customContextMenuRequested,
             this, &OpenPagesWidget::contextMenuRequested);
-    connect(model(), SIGNAL(rowsInserted(QModelIndex,int,int)),
-            this, SLOT(updateCloseButtonVisibility()));
-    connect(model(), SIGNAL(rowsRemoved(QModelIndex,int,int)),
-            this, SLOT(updateCloseButtonVisibility()));
+    connect(model(), &QAbstractItemModel::rowsInserted,
+            this, &OpenPagesWidget::updateCloseButtonVisibility);
+    connect(model(), &QAbstractItemModel::rowsRemoved,
+            this, &OpenPagesWidget::updateCloseButtonVisibility);
 }
 
 OpenPagesWidget::~OpenPagesWidget()
@@ -77,7 +77,7 @@ void OpenPagesWidget::allowContextMenu(bool ok)
     m_allowContextMenu = ok;
 }
 
-// -- private slots
+// -- private
 
 void OpenPagesWidget::contextMenuRequested(QPoint pos)
 {
diff --git a/src/plugins/help/openpageswidget.h b/src/plugins/help/openpageswidget.h
index 1cfb931be9..33686df2ea 100644
--- a/src/plugins/help/openpageswidget.h
+++ b/src/plugins/help/openpageswidget.h
@@ -49,13 +49,12 @@ signals:
     void closePage(const QModelIndex &index);
     void closePagesExcept(const QModelIndex &index);
 
-private slots:
+private:
     void contextMenuRequested(QPoint pos);
     void handleActivated(const QModelIndex &index);
     void handleCloseActivated(const QModelIndex &index);
     void updateCloseButtonVisibility();
 
-private:
     bool m_allowContextMenu;
 };
 
diff --git a/src/plugins/help/qtwebkithelpviewer.cpp b/src/plugins/help/qtwebkithelpviewer.cpp
index 395a89df9c..70b8e1a226 100644
--- a/src/plugins/help/qtwebkithelpviewer.cpp
+++ b/src/plugins/help/qtwebkithelpviewer.cpp
@@ -94,9 +94,9 @@ HelpNetworkReply::HelpNetworkReply(const QNetworkRequest &request,
 
     setHeader(QNetworkRequest::ContentTypeHeader, mimeType);
     setHeader(QNetworkRequest::ContentLengthHeader, QByteArray::number(dataLength));
-    QTimer::singleShot(0, this, SIGNAL(metaDataChanged()));
-    QTimer::singleShot(0, this, SIGNAL(readyRead()));
-    QTimer::singleShot(0, this, SIGNAL(finished()));
+    QTimer::singleShot(0, this, &QNetworkReply::metaDataChanged);
+    QTimer::singleShot(0, this, &QIODevice::readyRead);
+    QTimer::singleShot(0, this, &QNetworkReply::finished);
 }
 
 qint64 HelpNetworkReply::readData(char *buffer, qint64 maxlen)
@@ -145,8 +145,8 @@ QtWebKitHelpPage::QtWebKitHelpPage(QObject *parent)
     , m_keyboardModifiers(Qt::NoModifier)
 {
     setForwardUnsupportedContent(true);
-    connect(this, SIGNAL(unsupportedContent(QNetworkReply*)), this,
-        SLOT(onHandleUnsupportedContent(QNetworkReply*)));
+    connect(this, &QWebPage::unsupportedContent, this,
+        &QtWebKitHelpPage::onHandleUnsupportedContent);
 }
 
 QWebPage *QtWebKitHelpPage::createWindow(QWebPage::WebWindowType)
@@ -257,8 +257,8 @@ QtWebKitHelpWidget::QtWebKitHelpWidget(QtWebKitHelpViewer *parent)
     setPage(new QtWebKitHelpPage(this));
     HelpNetworkAccessManager *manager = new HelpNetworkAccessManager(this);
     page()->setNetworkAccessManager(manager);
-    connect(manager, SIGNAL(finished(QNetworkReply*)), this,
-        SLOT(slotNetworkReplyFinished(QNetworkReply*)));
+    connect(manager, &QNetworkAccessManager::finished, this,
+        &QtWebKitHelpWidget::slotNetworkReplyFinished);
 
     QAction* action = pageAction(QWebPage::OpenLinkInNewWindow);
     action->setText(tr("Open Link as New Page"));
@@ -267,12 +267,12 @@ QtWebKitHelpWidget::QtWebKitHelpWidget(QtWebKitHelpViewer *parent)
     pageAction(QWebPage::DownloadImageToDisk)->setVisible(false);
     pageAction(QWebPage::OpenImageInNewWindow)->setVisible(false);
 
-    connect(pageAction(QWebPage::Copy), SIGNAL(changed()), this,
-        SLOT(actionChanged()));
-    connect(pageAction(QWebPage::Back), SIGNAL(changed()), this,
-        SLOT(actionChanged()));
-    connect(pageAction(QWebPage::Forward), SIGNAL(changed()), this,
-        SLOT(actionChanged()));
+    connect(pageAction(QWebPage::Copy), &QAction::changed, this,
+        &QtWebKitHelpWidget::actionChanged);
+    connect(pageAction(QWebPage::Back), &QAction::changed, this,
+        &QtWebKitHelpWidget::actionChanged);
+    connect(pageAction(QWebPage::Forward), &QAction::changed, this,
+        &QtWebKitHelpWidget::actionChanged);
 }
 
 QtWebKitHelpWidget::~QtWebKitHelpWidget()
@@ -289,8 +289,6 @@ void QtWebKitHelpWidget::scaleDown()
     setZoomFactor(qMax(qreal(0.0), zoomFactor() - qreal(0.1)));
 }
 
-// -- public slots
-
 void QtWebKitHelpWidget::copy()
 {
     triggerPageAction(QWebPage::Copy);
@@ -348,7 +346,7 @@ void QtWebKitHelpWidget::contextMenuEvent(QContextMenuEvent *event)
     delete menu;
 }
 
-// -- private slots
+// -- private
 
 void QtWebKitHelpWidget::actionChanged()
 {
@@ -395,13 +393,13 @@ QtWebKitHelpViewer::QtWebKitHelpViewer(QWidget *parent)
     p.setColor(QPalette::Text, Qt::black);
     setPalette(p);
 
-    connect(m_webView, SIGNAL(urlChanged(QUrl)), this, SIGNAL(sourceChanged(QUrl)));
-    connect(m_webView, SIGNAL(loadStarted()), this, SLOT(slotLoadStarted()));
-    connect(m_webView, SIGNAL(loadFinished(bool)), this, SLOT(slotLoadFinished()));
-    connect(m_webView, SIGNAL(titleChanged(QString)), this, SIGNAL(titleChanged()));
-    connect(m_webView->page(), SIGNAL(printRequested(QWebFrame*)), this, SIGNAL(printRequested()));
-    connect(m_webView, SIGNAL(backwardAvailable(bool)), this, SIGNAL(backwardAvailable(bool)));
-    connect(m_webView, SIGNAL(forwardAvailable(bool)), this, SIGNAL(forwardAvailable(bool)));
+    connect(m_webView, &QWebView::urlChanged, this, &HelpViewer::sourceChanged);
+    connect(m_webView, &QWebView::loadStarted, this, &QtWebKitHelpViewer::slotLoadStarted);
+    connect(m_webView, &QWebView::loadFinished, this, &QtWebKitHelpViewer::slotLoadFinished);
+    connect(m_webView, &QWebView::titleChanged, this, &HelpViewer::titleChanged);
+    connect(m_webView->page(), &QWebPage::printRequested, this, &HelpViewer::printRequested);
+    connect(m_webView, &QtWebKitHelpWidget::backwardAvailable, this, &HelpViewer::backwardAvailable);
+    connect(m_webView, &QtWebKitHelpWidget::forwardAvailable, this, &HelpViewer::forwardAvailable);
     connect(page(), &QtWebKitHelpPage::linkHovered, this, &QtWebKitHelpViewer::setToolTip);
 }
 
@@ -531,7 +529,7 @@ void QtWebKitHelpViewer::addBackHistoryItems(QMenu *backMenu)
             QAction *action = new QAction(backMenu);
             action->setText(items.at(i).title());
             action->setData(i);
-            connect(action, SIGNAL(triggered()), this, SLOT(goToBackHistoryItem()));
+            connect(action, &QAction::triggered, this, &QtWebKitHelpViewer::goToBackHistoryItem);
             backMenu->addAction(action);
         }
     }
@@ -545,7 +543,7 @@ void QtWebKitHelpViewer::addForwardHistoryItems(QMenu *forwardMenu)
             QAction *action = new QAction(forwardMenu);
             action->setText(items.at(i).title());
             action->setData(i);
-            connect(action, SIGNAL(triggered()), this, SLOT(goToForwardHistoryItem()));
+            connect(action, &QAction::triggered, this, &QtWebKitHelpViewer::goToForwardHistoryItem);
             forwardMenu->addAction(action);
         }
     }
diff --git a/src/plugins/help/qtwebkithelpviewer.h b/src/plugins/help/qtwebkithelpviewer.h
index ff85a92a28..5b3e41c44e 100644
--- a/src/plugins/help/qtwebkithelpviewer.h
+++ b/src/plugins/help/qtwebkithelpviewer.h
@@ -71,7 +71,6 @@ public:
 
     QtWebKitHelpPage *page() const;
 
-public slots:
     void scaleUp();
     void scaleDown();
     void resetScale();
@@ -81,12 +80,11 @@ public slots:
     void backward();
     void print(QPrinter *printer);
 
-private slots:
+private:
     void goToBackHistoryItem();
     void goToForwardHistoryItem();
     void goToHistoryItem(bool forward);
 
-private:
     QString m_oldHighlightId;
     QString m_oldHighlightStyle;
     QtWebKitHelpWidget *m_webView;
@@ -102,8 +100,6 @@ public:
 
     void scaleUp();
     void scaleDown();
-
-public slots:
     void copy();
 
 signals:
@@ -117,11 +113,9 @@ protected:
     void mouseReleaseEvent(QMouseEvent *event);
     void contextMenuEvent(QContextMenuEvent *event);
 
-private slots:
+private:
     void actionChanged();
     void slotNetworkReplyFinished(QNetworkReply *reply);
-
-private:
     bool eventFilter(QObject *obj, QEvent *event);
 
     QtWebKitHelpViewer *m_parent;
@@ -140,10 +134,9 @@ protected:
     virtual bool acceptNavigationRequest(QWebFrame *frame,
         const QNetworkRequest &request, NavigationType type);
 
-private slots:
+private:
     void onHandleUnsupportedContent(QNetworkReply *reply);
 
-private:
     QUrl m_loadingUrl;
     bool closeNewTabIfNeeded;
 
diff --git a/src/plugins/help/remotehelpfilter.cpp b/src/plugins/help/remotehelpfilter.cpp
index 1ebcc6a717..49ee2687c6 100644
--- a/src/plugins/help/remotehelpfilter.cpp
+++ b/src/plugins/help/remotehelpfilter.cpp
@@ -53,7 +53,8 @@ RemoteFilterOptions::RemoteFilterOptions(RemoteHelpFilter *filter, QWidget *pare
             this, &RemoteFilterOptions::addNewItem);
     connect(m_ui.remove, &QPushButton::clicked,
             this, &RemoteFilterOptions::removeItem);
-    connect(m_ui.listWidget, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)), SLOT(updateRemoveButton()));
+    connect(m_ui.listWidget, &QListWidget::currentItemChanged,
+            this, &RemoteFilterOptions::updateRemoveButton);
     updateRemoveButton();
 }
 
diff --git a/src/plugins/help/remotehelpfilter.h b/src/plugins/help/remotehelpfilter.h
index 19309d753c..9c8fa8fc0d 100644
--- a/src/plugins/help/remotehelpfilter.h
+++ b/src/plugins/help/remotehelpfilter.h
@@ -69,12 +69,11 @@ class RemoteFilterOptions : public QDialog
 public:
     explicit RemoteFilterOptions(RemoteHelpFilter *filter, QWidget *parent = 0);
 
-private slots:
+private:
     void addNewItem();
     void removeItem();
     void updateRemoveButton();
 
-private:
     RemoteHelpFilter *m_filter;
     Ui::RemoteFilterOptions m_ui;
 };
diff --git a/src/plugins/help/searchwidget.cpp b/src/plugins/help/searchwidget.cpp
index 63c7cd08aa..f8d7875e90 100644
--- a/src/plugins/help/searchwidget.cpp
+++ b/src/plugins/help/searchwidget.cpp
@@ -131,24 +131,24 @@ void SearchWidget::showEvent(QShowEvent *event)
 
         setFocusProxy(queryWidget);
 
-        connect(queryWidget, SIGNAL(search()), this, SLOT(search()));
+        connect(queryWidget, &QHelpSearchQueryWidget::search, this, &SearchWidget::search);
         connect(resultWidget, &QHelpSearchResultWidget::requestShowLink, this,
                 [this](const QUrl &url) {
                     emit linkActivated(url, currentSearchTerms(), false/*newPage*/);
                 });
 
-        connect(searchEngine, SIGNAL(searchingStarted()), this,
-            SLOT(searchingStarted()));
-        connect(searchEngine, SIGNAL(searchingFinished(int)), this,
-            SLOT(searchingFinished(int)));
+        connect(searchEngine, &QHelpSearchEngine::searchingStarted, this,
+            &SearchWidget::searchingStarted);
+        connect(searchEngine, &QHelpSearchEngine::searchingFinished, this,
+            &SearchWidget::searchingFinished);
 
         QTextBrowser* browser = resultWidget->findChild<QTextBrowser*>();
         browser->viewport()->installEventFilter(this);
 
-        connect(searchEngine, SIGNAL(indexingStarted()), this,
-            SLOT(indexingStarted()));
-        connect(searchEngine, SIGNAL(indexingFinished()), this,
-            SLOT(indexingFinished()));
+        connect(searchEngine, &QHelpSearchEngine::indexingStarted, this,
+            &SearchWidget::indexingStarted);
+        connect(searchEngine, &QHelpSearchEngine::indexingFinished, this,
+            &SearchWidget::indexingFinished);
 
         QMetaObject::invokeMethod(&LocalHelpManager::helpEngine(), "setupFinished",
             Qt::QueuedConnection);
@@ -207,7 +207,8 @@ void SearchWidget::indexingStarted()
     m_progress->reportStarted();
 
     m_watcher.setFuture(m_progress->future());
-    connect(&m_watcher, SIGNAL(canceled()), searchEngine, SLOT(cancelIndexing()));
+    connect(&m_watcher, &QFutureWatcherBase::canceled,
+            searchEngine, &QHelpSearchEngine::cancelIndexing);
 }
 
 void SearchWidget::indexingFinished()
@@ -259,9 +260,9 @@ void SearchWidget::contextMenuEvent(QContextMenuEvent *contextMenuEvent)
         openLinkInNewTab = menu.addAction(tr("Open Link as New Page"));
         copyAnchorAction = menu.addAction(tr("Copy Link"));
     } else if (browser->textCursor().hasSelection()) {
-        menu.addAction(tr("Copy"), browser, SLOT(copy()));
+        connect(menu.addAction(tr("Copy")), &QAction::triggered, browser, &QTextEdit::copy);
     } else {
-        menu.addAction(tr("Reload"), browser, SLOT(reload()));
+        connect(menu.addAction(tr("Reload")), &QAction::triggered, browser, &QTextBrowser::reload);
     }
 
     QAction *usedAction = menu.exec(mapToGlobal(contextMenuEvent->pos()));
@@ -301,8 +302,8 @@ SearchSideBarItem::SearchSideBarItem()
     : SideBarItem(new SearchWidget, QLatin1String(Constants::HELP_SEARCH))
 {
     widget()->setWindowTitle(HelpPlugin::tr(Constants::SB_SEARCH));
-    connect(widget(), SIGNAL(linkActivated(QUrl,QStringList,bool)),
-            this, SIGNAL(linkActivated(QUrl,QStringList,bool)));
+    connect(static_cast<SearchWidget *>(widget()), &SearchWidget::linkActivated,
+            this, &SearchSideBarItem::linkActivated);
 }
 
 QList<QToolButton *> SearchSideBarItem::createToolBarWidgets()
@@ -310,7 +311,7 @@ QList<QToolButton *> SearchSideBarItem::createToolBarWidgets()
     QToolButton *reindexButton = new QToolButton;
     reindexButton->setIcon(Core::Icons::RELOAD.icon());
     reindexButton->setToolTip(tr("Regenerate Index"));
-    connect(reindexButton, SIGNAL(clicked()),
-            widget(), SLOT(reindexDocumentation()));
+    connect(reindexButton, &QAbstractButton::clicked,
+            static_cast<SearchWidget *>(widget()), &SearchWidget::reindexDocumentation);
     return QList<QToolButton *>() << reindexButton;
 }
diff --git a/src/plugins/help/searchwidget.h b/src/plugins/help/searchwidget.h
index 3c2bdf670d..d06a597b32 100644
--- a/src/plugins/help/searchwidget.h
+++ b/src/plugins/help/searchwidget.h
@@ -66,8 +66,6 @@ public:
     void zoomOut();
     void resetZoom();
 
-
-public slots:
     void reindexDocumentation();
 
 signals:
@@ -76,7 +74,7 @@ signals:
 protected:
     void showEvent(QShowEvent *event);
 
-private slots:
+private:
     void search() const;
 
     void searchingStarted();
@@ -85,12 +83,10 @@ private slots:
     void indexingStarted();
     void indexingFinished();
 
-private:
     bool eventFilter(QObject* o, QEvent *e);
     void contextMenuEvent(QContextMenuEvent *contextMenuEvent);
     QStringList currentSearchTerms() const;
 
-private:
     int zoomCount;
 
     QFutureWatcher<void> m_watcher;
diff --git a/src/plugins/help/textbrowserhelpviewer.cpp b/src/plugins/help/textbrowserhelpviewer.cpp
index 611cf00609..81a7a70157 100644
--- a/src/plugins/help/textbrowserhelpviewer.cpp
+++ b/src/plugins/help/textbrowserhelpviewer.cpp
@@ -68,9 +68,9 @@ TextBrowserHelpViewer::TextBrowserHelpViewer(QWidget *parent)
 
     connect(m_textBrowser, &TextBrowserHelpWidget::anchorClicked,
             this, &TextBrowserHelpViewer::setSource);
-    connect(m_textBrowser, SIGNAL(sourceChanged(QUrl)), this, SIGNAL(titleChanged()));
-    connect(m_textBrowser, SIGNAL(forwardAvailable(bool)), this, SIGNAL(forwardAvailable(bool)));
-    connect(m_textBrowser, SIGNAL(backwardAvailable(bool)), this, SIGNAL(backwardAvailable(bool)));
+    connect(m_textBrowser, &QTextBrowser::sourceChanged, this, &HelpViewer::titleChanged);
+    connect(m_textBrowser, &QTextBrowser::forwardAvailable, this, &HelpViewer::forwardAvailable);
+    connect(m_textBrowser, &QTextBrowser::backwardAvailable, this, &HelpViewer::backwardAvailable);
 }
 
 TextBrowserHelpViewer::~TextBrowserHelpViewer()
@@ -256,8 +256,6 @@ bool TextBrowserHelpViewer::findText(const QString &text, Core::FindFlags flags,
     return !cursorIsNull;
 }
 
-// -- public slots
-
 void TextBrowserHelpViewer::copy()
 {
     m_textBrowser->copy();
@@ -386,9 +384,9 @@ void TextBrowserHelpWidget::contextMenuEvent(QContextMenuEvent *event)
         }
         copyAnchorAction = menu.addAction(tr("Copy Link"));
     } else if (!textCursor().selectedText().isEmpty()) {
-        menu.addAction(tr("Copy"), this, SLOT(copy()));
+        connect(menu.addAction(tr("Copy")), &QAction::triggered, this, &QTextEdit::copy);
     } else {
-        menu.addAction(tr("Reload"), this, SLOT(reload()));
+        connect(menu.addAction(tr("Reload")), &QAction::triggered, this, &QTextBrowser::reload);
     }
 
     if (copyAnchorAction == menu.exec(event->globalPos()))
diff --git a/src/plugins/help/textbrowserhelpviewer.h b/src/plugins/help/textbrowserhelpviewer.h
index 5640fe10ad..12ace81659 100644
--- a/src/plugins/help/textbrowserhelpviewer.h
+++ b/src/plugins/help/textbrowserhelpviewer.h
@@ -67,7 +67,6 @@ public:
     bool findText(const QString &text, Core::FindFlags flags,
                   bool incremental, bool fromSearch, bool *wrapped = 0);
 
-public slots:
     void scaleUp();
     void scaleDown();
     void resetScale();
@@ -77,10 +76,9 @@ public slots:
     void backward();
     void print(QPrinter *printer);
 
-private slots:
+private:
     void goToHistoryItem();
 
-private:
     TextBrowserHelpWidget *m_textBrowser;
 };
 
diff --git a/src/plugins/help/webenginehelpviewer.h b/src/plugins/help/webenginehelpviewer.h
index ba8d0adfb3..1674258a71 100644
--- a/src/plugins/help/webenginehelpviewer.h
+++ b/src/plugins/help/webenginehelpviewer.h
@@ -85,7 +85,6 @@ public:
 
     WebEngineHelpPage *page() const;
 
-public slots:
     void scaleUp() override;
     void scaleDown() override;
     void resetScale() override;
diff --git a/src/shared/help/bookmarkmanager.cpp b/src/shared/help/bookmarkmanager.cpp
index 0a316ce88e..714212bfc6 100644
--- a/src/shared/help/bookmarkmanager.cpp
+++ b/src/shared/help/bookmarkmanager.cpp
@@ -102,8 +102,8 @@ BookmarkDialog::BookmarkDialog(BookmarkManager *manager, const QString &title,
     connect(ui.treeView, &TreeView::customContextMenuRequested,
             this, &BookmarkDialog::customContextMenuRequested);
 
-    connect(ui.treeView->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex)),
-            this, SLOT(currentChanged(QModelIndex)));
+    connect(ui.treeView->selectionModel(), &QItemSelectionModel::currentChanged,
+            this, &BookmarkDialog::currentChanged);
 }
 
 BookmarkDialog::~BookmarkDialog()
diff --git a/src/shared/help/bookmarkmanager.h b/src/shared/help/bookmarkmanager.h
index 2526d8bc43..7afa7e668f 100644
--- a/src/shared/help/bookmarkmanager.h
+++ b/src/shared/help/bookmarkmanager.h
@@ -64,7 +64,7 @@ public:
         const QString &url, QWidget *parent = 0);
     ~BookmarkDialog();
 
-private slots:
+private:
     void addAccepted();
     void addNewFolder();
     void toolButtonClicked();
@@ -73,11 +73,8 @@ private slots:
     void selectBookmarkFolder(const QString &folderName);
     void customContextMenuRequested(const QPoint &point);
     void currentChanged(const QModelIndex& current);
-
-private:
     bool eventFilter(QObject *object, QEvent *e);
 
-private:
     QString m_url;
     QString m_title;
 
@@ -116,19 +113,16 @@ signals:
     void linkActivated(const QUrl &url);
     void createPage(const QUrl &url, bool fromSearch);
 
-private slots:
+private:
     void removeClicked();
     void filterChanged();
     void expand(const QModelIndex& index);
     void activated(const QModelIndex &index);
     void customContextMenuRequested(const QPoint &point);
-
-private:
     void setup();
     void expandItems();
     bool eventFilter(QObject *object, QEvent *event);
 
-private:
     QRegExp regExp;
     TreeView *treeView;
     Utils::FancyLineEdit *searchField;
@@ -168,16 +162,13 @@ public:
     void addNewBookmark(const QModelIndex &index, const QString &name, const QString &url);
     void setupBookmarkModels();
 
-private slots:
-    void itemChanged(QStandardItem *item);
-
 private:
+    void itemChanged(QStandardItem *item);
     QString uniqueFolderName() const;
     void removeBookmarkFolderItems(QStandardItem *item);
     void readBookmarksRecursive(const QStandardItem *item, QDataStream &stream,
         const qint32 depth) const;
 
-private:
     const QIcon m_folderIcon;
     const QIcon m_bookmarkIcon;
 
diff --git a/src/shared/help/filternamedialog.cpp b/src/shared/help/filternamedialog.cpp
index 81ec573712..930d439633 100644
--- a/src/shared/help/filternamedialog.cpp
+++ b/src/shared/help/filternamedialog.cpp
@@ -32,11 +32,11 @@ FilterNameDialog::FilterNameDialog(QWidget *parent)
 {
     m_ui.setupUi(this);
     connect(m_ui.buttonBox->button(QDialogButtonBox::Ok),
-        SIGNAL(clicked()), this, SLOT(accept()));
+            &QAbstractButton::clicked, this, &QDialog::accept);
     connect(m_ui.buttonBox->button(QDialogButtonBox::Cancel),
-        SIGNAL(clicked()), this, SLOT(reject()));
-    connect(m_ui.lineEdit, SIGNAL(textChanged(QString)),
-        this, SLOT(updateOkButton()));
+            &QAbstractButton::clicked, this, &QDialog::reject);
+    connect(m_ui.lineEdit, &QLineEdit::textChanged,
+            this, &FilterNameDialog::updateOkButton);
     m_ui.buttonBox->button(QDialogButtonBox::Ok)->setDisabled(true);
 
 }
diff --git a/src/shared/help/filternamedialog.h b/src/shared/help/filternamedialog.h
index 23f62e9528..86e6a2ecba 100644
--- a/src/shared/help/filternamedialog.h
+++ b/src/shared/help/filternamedialog.h
@@ -36,9 +36,8 @@ public:
     FilterNameDialog(QWidget *parent = 0);
     QString filterName() const;
 
-private slots:
+private:
     void updateOkButton();
 
-private:
     Ui::FilterNameDialogClass m_ui;
 };
diff --git a/src/shared/help/indexwindow.cpp b/src/shared/help/indexwindow.cpp
index 8ec3de52ca..8ceea1eca5 100644
--- a/src/shared/help/indexwindow.cpp
+++ b/src/shared/help/indexwindow.cpp
@@ -239,25 +239,25 @@ void IndexFilterModel::setSourceModel(QAbstractItemModel *sm)
 {
     QAbstractItemModel *previousModel = sourceModel();
     if (previousModel) {
-        disconnect(previousModel, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
-                   this, SLOT(sourceDataChanged(QModelIndex,QModelIndex)));
-        disconnect(previousModel, SIGNAL(rowsInserted(QModelIndex,int,int)),
-                   this, SLOT(sourceRowsInserted(QModelIndex,int,int)));
-        disconnect(previousModel, SIGNAL(rowsRemoved(QModelIndex,int,int)),
-                   this, SLOT(sourceRowsRemoved(QModelIndex,int,int)));
-        disconnect(previousModel, SIGNAL(modelReset()),
-                   this, SLOT(sourceModelReset()));
+        disconnect(previousModel, &QAbstractItemModel::dataChanged,
+                   this, &IndexFilterModel::sourceDataChanged);
+        disconnect(previousModel, &QAbstractItemModel::rowsInserted,
+                   this, &IndexFilterModel::sourceRowsInserted);
+        disconnect(previousModel, &QAbstractItemModel::rowsRemoved,
+                   this, &IndexFilterModel::sourceRowsRemoved);
+        disconnect(previousModel, &QAbstractItemModel::modelReset,
+                   this, &IndexFilterModel::sourceModelReset);
     }
     QAbstractProxyModel::setSourceModel(sm);
     if (sm) {
-        connect(sm, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
-                this, SLOT(sourceDataChanged(QModelIndex,QModelIndex)));
-        connect(sm, SIGNAL(rowsInserted(QModelIndex,int,int)),
-                this, SLOT(sourceRowsInserted(QModelIndex,int,int)));
-        connect(sm, SIGNAL(rowsRemoved(QModelIndex,int,int)),
-                this, SLOT(sourceRowsRemoved(QModelIndex,int,int)));
-        connect(sm, SIGNAL(modelReset()),
-                this, SLOT(sourceModelReset()));
+        connect(sm, &QAbstractItemModel::dataChanged,
+                this, &IndexFilterModel::sourceDataChanged);
+        connect(sm, &QAbstractItemModel::rowsInserted,
+                this, &IndexFilterModel::sourceRowsInserted);
+        connect(sm, &QAbstractItemModel::rowsRemoved,
+                this, &IndexFilterModel::sourceRowsRemoved);
+        connect(sm, &QAbstractItemModel::modelReset,
+                this, &IndexFilterModel::sourceModelReset);
     }
     filter(m_filter, m_wildcard);
 }
diff --git a/src/shared/help/indexwindow.h b/src/shared/help/indexwindow.h
index d041ba399f..aa621c2293 100644
--- a/src/shared/help/indexwindow.h
+++ b/src/shared/help/indexwindow.h
@@ -65,13 +65,13 @@ public:
     QModelIndex sibling(int row, int column, const QModelIndex &idx) const;
 
     Qt::ItemFlags flags(const QModelIndex &index) const;
-private slots:
+
+private:
     void sourceDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
     void sourceRowsRemoved(const QModelIndex &parent, int start, int end);
     void sourceRowsInserted(const QModelIndex &parent, int start, int end);
     void sourceModelReset();
 
-private:
     QString m_filter;
     QString m_wildcard;
     QList<int> m_toSource;
diff --git a/src/shared/help/topicchooser.h b/src/shared/help/topicchooser.h
index a886b2b929..88c6fa90b6 100644
--- a/src/shared/help/topicchooser.h
+++ b/src/shared/help/topicchooser.h
@@ -46,15 +46,12 @@ public:
 
     QUrl link() const;
 
-private slots:
+private:
     void acceptDialog();
     void setFilter(const QString &pattern);
     void activated(const QModelIndex &index);
-
-private:
     bool eventFilter(QObject *object, QEvent *event);
 
-private:
     Ui::TopicChooser ui;
     QList<QUrl> m_links;