dolphin: convert statusbar, settings and search to qt5 signals/slot syntax

src/search/dolphinfacetswidget.cpp

@@ -181,7 +181,7 @@ QStringList DolphinFacetsWidget::facetTypes() const
 QCheckBox* DolphinFacetsWidget::createCheckBox(const QString& text)
 {
     QCheckBox* checkBox = new QCheckBox(text);
-    connect(checkBox, SIGNAL(clicked()), this, SIGNAL(facetChanged()));
+    connect(checkBox, &QCheckBox::clicked, this, &DolphinFacetsWidget::facetChanged);
     return checkBox;
 }
 
@@ -189,7 +189,7 @@ QRadioButton* DolphinFacetsWidget::createRadioButton(const QString& text,
                                                      QButtonGroup* group)
 {
     QRadioButton* button = new QRadioButton(text);
-    connect(button, SIGNAL(clicked()), this, SIGNAL(facetChanged()));
+    connect(button, &QRadioButton::clicked, this, &DolphinFacetsWidget::facetChanged);
     group->addButton(button);
     return button;
 }

src/search/dolphinsearchbox.cpp

@@ -289,7 +289,7 @@ void DolphinSearchBox::initButton(QToolButton* button)
     button->setAutoExclusive(true);
     button->setAutoRaise(true);
     button->setCheckable(true);
-    connect(button, SIGNAL(clicked(bool)), this, SLOT(slotConfigurationChanged()));
+    connect(button, &QToolButton::clicked, this, &DolphinSearchBox::slotConfigurationChanged);
 }
 
 void DolphinSearchBox::loadSettings()
@@ -324,7 +324,7 @@ void DolphinSearchBox::init()
     closeButton->setAutoRaise(true);
     closeButton->setIcon(KIcon("dialog-close"));
     closeButton->setToolTip(i18nc("@info:tooltip", "Quit searching"));
-    connect(closeButton, SIGNAL(clicked()), this, SLOT(emitCloseRequest()));
+    connect(closeButton, &QToolButton::clicked, this, &DolphinSearchBox::emitCloseRequest);
 
     // Create search label
     m_searchLabel = new QLabel(this);
@@ -335,10 +335,10 @@ void DolphinSearchBox::init()
     m_searchInput->setClearButtonShown(true);
     m_searchInput->setFont(KGlobalSettings::generalFont());
     setFocusProxy(m_searchInput);
-    connect(m_searchInput, SIGNAL(returnPressed(QString)),
+    connect(m_searchInput, static_cast<void(KLineEdit::*)(const QString&)>(&KLineEdit::returnPressed),
-            this, SLOT(slotReturnPressed(QString)));
+            this, &DolphinSearchBox::slotReturnPressed);
-    connect(m_searchInput, SIGNAL(textChanged(QString)),
+    connect(m_searchInput, &KLineEdit::textChanged,
-            this, SLOT(slotSearchTextChanged(QString)));
+            this, &DolphinSearchBox::slotSearchTextChanged);
 
     // Apply layout for the search input
     QHBoxLayout* searchInputLayout = new QHBoxLayout();
@@ -379,12 +379,12 @@ void DolphinSearchBox::init()
     m_facetsToggleButton = new QToolButton(this);
     m_facetsToggleButton->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
     initButton(m_facetsToggleButton);
-    connect(m_facetsToggleButton, SIGNAL(clicked()), this, SLOT(slotFacetsButtonToggled()));
+    connect(m_facetsToggleButton, &QToolButton::clicked, this, &DolphinSearchBox::slotFacetsButtonToggled);
 
     m_facetsWidget = new DolphinFacetsWidget(this);
     m_facetsWidget->installEventFilter(this);
     m_facetsWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Maximum);
-    connect(m_facetsWidget, SIGNAL(facetChanged()), this, SLOT(slotFacetChanged()));
+    connect(m_facetsWidget, &DolphinFacetsWidget::facetChanged, this, &DolphinSearchBox::slotFacetChanged);
 
     // Apply layout for the options
     QHBoxLayout* optionsLayout = new QHBoxLayout();
@@ -424,7 +424,7 @@ void DolphinSearchBox::init()
     m_startSearchTimer = new QTimer(this);
     m_startSearchTimer->setSingleShot(true);
     m_startSearchTimer->setInterval(1000);
-    connect(m_startSearchTimer, SIGNAL(timeout()), this, SLOT(emitSearchRequest()));
+    connect(m_startSearchTimer, &QTimer::timeout, this, &DolphinSearchBox::emitSearchRequest);
 
     updateFacetsToggleButton();
     applyReadOnlyState();

src/search/filenamesearchprotocol.cpp

@@ -81,8 +81,8 @@ void FileNameSearchProtocol::searchDirectory(const KUrl& directory)
     dirLister->openUrl(directory);
 
     QEventLoop eventLoop;
-    QObject::connect(dirLister, SIGNAL(canceled()), &eventLoop, SLOT(quit()));
+    QObject::connect(dirLister, static_cast<void(KDirLister::*)()>(&KDirLister::canceled), &eventLoop, &QEventLoop::quit);
-    QObject::connect(dirLister, SIGNAL(completed()), &eventLoop, SLOT(quit()));
+    QObject::connect(dirLister, static_cast<void(KDirLister::*)()>(&KDirLister::completed), &eventLoop, &QEventLoop::quit);
     eventLoop.exec();
 
     // Visualize all items that match the search pattern

src/settings/additionalinfodialog.cpp

@@ -82,7 +82,7 @@ AdditionalInfoDialog::AdditionalInfoDialog(QWidget* parent,
     const KConfigGroup dialogConfig(KSharedConfig::openConfig("dolphinrc"), "AdditionalInfoDialog");
     restoreDialogSize(dialogConfig);
 
-    connect(this, SIGNAL(okClicked()), this, SLOT(slotOk()));
+    connect(this, &AdditionalInfoDialog::okClicked, this, &AdditionalInfoDialog::slotOk);
 }
 
 AdditionalInfoDialog::~AdditionalInfoDialog()

src/settings/applyviewpropsjob.cpp

@@ -38,8 +38,8 @@ ApplyViewPropsJob::ApplyViewPropsJob(const KUrl& dir,
     m_viewProps->setSortOrder(viewProps.sortOrder());
 
     KIO::ListJob* listJob = KIO::listRecursive(dir, KIO::HideProgressInfo);
-    connect(listJob, SIGNAL(entries(KIO::Job*,KIO::UDSEntryList)),
+    connect(listJob, &KIO::ListJob::entries,
-            SLOT(slotEntries(KIO::Job*,KIO::UDSEntryList)));
+            this, &ApplyViewPropsJob::slotEntries);
     addSubjob(listJob);
 }
 

src/settings/dolphinsettingsdialog.cpp

@@ -58,42 +58,42 @@ DolphinSettingsDialog::DolphinSettingsDialog(const KUrl& url, QWidget* parent) :
     KPageWidgetItem* startupSettingsFrame = addPage(startupSettingsPage,
                                                     i18nc("@title:group", "Startup"));
     startupSettingsFrame->setIcon(KIcon("go-home"));
-    connect(startupSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(startupSettingsPage, &StartupSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     // View Modes
     ViewSettingsPage* viewSettingsPage = new ViewSettingsPage(this);
     KPageWidgetItem* viewSettingsFrame = addPage(viewSettingsPage,
                                                  i18nc("@title:group", "View Modes"));
     viewSettingsFrame->setIcon(KIcon("view-choose"));
-    connect(viewSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(viewSettingsPage, &ViewSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     // Navigation
     NavigationSettingsPage* navigationSettingsPage = new NavigationSettingsPage(this);
     KPageWidgetItem* navigationSettingsFrame = addPage(navigationSettingsPage,
                                                        i18nc("@title:group", "Navigation"));
     navigationSettingsFrame->setIcon(KIcon("input-mouse"));
-    connect(navigationSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(navigationSettingsPage, &NavigationSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     // Services
     ServicesSettingsPage* servicesSettingsPage = new ServicesSettingsPage(this);
     KPageWidgetItem* servicesSettingsFrame = addPage(servicesSettingsPage,
                                                        i18nc("@title:group", "Services"));
     servicesSettingsFrame->setIcon(KIcon("services"));
-    connect(servicesSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(servicesSettingsPage, &ServicesSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     // Trash
     TrashSettingsPage* trashSettingsPage = new TrashSettingsPage(this);
     KPageWidgetItem* trashSettingsFrame = addPage(trashSettingsPage,
                                                    i18nc("@title:group", "Trash"));
     trashSettingsFrame->setIcon(KIcon("user-trash"));
-    connect(trashSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(trashSettingsPage, &TrashSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     // General
     GeneralSettingsPage* generalSettingsPage = new GeneralSettingsPage(url, this);
     KPageWidgetItem* generalSettingsFrame = addPage(generalSettingsPage,
                                                     i18nc("@title:group General settings", "General"));
     generalSettingsFrame->setIcon(KIcon("system-run"));
-    connect(generalSettingsPage, SIGNAL(changed()), this, SLOT(enableApply()));
+    connect(generalSettingsPage, &GeneralSettingsPage::changed, this, &DolphinSettingsDialog::enableApply);
 
     const KConfigGroup dialogConfig(KSharedConfig::openConfig("dolphinrc"), "SettingsDialog");
 #pragma message("TODO: port")

src/settings/general/behaviorsettingspage.cpp

@@ -79,12 +79,12 @@ BehaviorSettingsPage::BehaviorSettingsPage(const KUrl& url, QWidget* parent) :
 
     loadSettings();
 
-    connect(m_localViewProps, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_localViewProps, &QRadioButton::toggled, this, &BehaviorSettingsPage::changed);
-    connect(m_globalViewProps, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_globalViewProps, &QRadioButton::toggled, this, &BehaviorSettingsPage::changed);
-    connect(m_showToolTips, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_showToolTips, &QCheckBox::toggled, this, &BehaviorSettingsPage::changed);
-    connect(m_showSelectionToggle, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_showSelectionToggle, &QCheckBox::toggled, this, &BehaviorSettingsPage::changed);
-    connect(m_naturalSorting, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_naturalSorting, &QCheckBox::toggled, this, &BehaviorSettingsPage::changed);
-    connect(m_renameInline, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_renameInline, &QCheckBox::toggled, this, &BehaviorSettingsPage::changed);
 }
 
 BehaviorSettingsPage::~BehaviorSettingsPage()

src/settings/general/configurepreviewplugindialog.cpp

@@ -60,7 +60,7 @@ ConfigurePreviewPluginDialog::ConfigurePreviewPluginDialog(const QString& plugin
 
     setMainWidget(mainWidget);
 
-    connect(this, SIGNAL(okClicked()), this, SLOT(slotOk()));
+    connect(this, &ConfigurePreviewPluginDialog::okClicked, this, &ConfigurePreviewPluginDialog::slotOk);
 }
 
 ConfigurePreviewPluginDialog::~ConfigurePreviewPluginDialog()

src/settings/general/confirmationssettingspage.cpp

@@ -68,9 +68,9 @@ ConfirmationsSettingsPage::ConfirmationsSettingsPage(QWidget* parent) :
 
     loadSettings();
 
-    connect(m_confirmMoveToTrash, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_confirmMoveToTrash, &QCheckBox::toggled, this, &ConfirmationsSettingsPage::changed);
-    connect(m_confirmDelete, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_confirmDelete, &QCheckBox::toggled, this, &ConfirmationsSettingsPage::changed);
-    connect(m_confirmClosingMultipleTabs, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_confirmClosingMultipleTabs, &QCheckBox::toggled, this, &ConfirmationsSettingsPage::changed);
 }
 
 ConfirmationsSettingsPage::~ConfirmationsSettingsPage()

src/settings/general/generalsettingspage.cpp

@@ -46,22 +46,22 @@ GeneralSettingsPage::GeneralSettingsPage(const KUrl& url, QWidget* parent) :
     // initialize 'Behavior' tab
     BehaviorSettingsPage* behaviorPage = new BehaviorSettingsPage(url, tabWidget);
     tabWidget->addTab(behaviorPage, i18nc("@title:tab Behavior settings", "Behavior"));
-    connect(behaviorPage, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(behaviorPage, &BehaviorSettingsPage::changed, this, &GeneralSettingsPage::changed);
 
     // initialize 'Previews' tab
     PreviewsSettingsPage* previewsPage = new PreviewsSettingsPage(tabWidget);
     tabWidget->addTab(previewsPage, i18nc("@title:tab Previews settings", "Previews"));
-    connect(previewsPage, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(previewsPage, &PreviewsSettingsPage::changed, this, &GeneralSettingsPage::changed);
 
     // initialize 'Context Menu' tab
     ConfirmationsSettingsPage* confirmationsPage = new ConfirmationsSettingsPage(tabWidget);
     tabWidget->addTab(confirmationsPage, i18nc("@title:tab Confirmations settings", "Confirmations"));
-    connect(confirmationsPage, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(confirmationsPage, &ConfirmationsSettingsPage::changed, this, &GeneralSettingsPage::changed);
 
     // initialize 'Status Bar' tab
     StatusBarSettingsPage* statusBarPage = new StatusBarSettingsPage(tabWidget);
     tabWidget->addTab(statusBarPage, i18nc("@title:tab Status Bar settings", "Status Bar"));
-    connect(statusBarPage, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(statusBarPage, &StatusBarSettingsPage::changed, this, &GeneralSettingsPage::changed);
 
     m_pages.append(behaviorPage);
     m_pages.append(previewsPage);

src/settings/general/previewssettingspage.cpp

@@ -65,8 +65,8 @@ PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
     m_listView = new QListView(this);
 
     ServiceItemDelegate* delegate = new ServiceItemDelegate(m_listView, m_listView);
-    connect(delegate, SIGNAL(requestServiceConfiguration(QModelIndex)),
+    connect(delegate, &ServiceItemDelegate::requestServiceConfiguration,
-            this, SLOT(configureService(QModelIndex)));
+            this, &PreviewsSettingsPage::configureService);
 
     ServiceModel* serviceModel = new ServiceModel(this);
     QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
@@ -95,8 +95,8 @@ PreviewsSettingsPage::PreviewsSettingsPage(QWidget* parent) :
 
     loadSettings();
 
-    connect(m_listView, SIGNAL(clicked(QModelIndex)), this, SIGNAL(changed()));
+    connect(m_listView, &QListView::clicked, this, &PreviewsSettingsPage::changed);
-    connect(m_remoteFileSizeBox, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
+    connect(m_remoteFileSizeBox, static_cast<void(KIntSpinBox::*)(int)>(&KIntSpinBox::valueChanged), this, &PreviewsSettingsPage::changed);
 }
 
 PreviewsSettingsPage::~PreviewsSettingsPage()

src/settings/general/statusbarsettingspage.cpp

@@ -43,8 +43,8 @@ StatusBarSettingsPage::StatusBarSettingsPage(QWidget* parent) :
 
     loadSettings();
 
-    connect(m_showZoomSlider, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_showZoomSlider, &QCheckBox::toggled, this, &StatusBarSettingsPage::changed);
-    connect(m_showSpaceInfo, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_showSpaceInfo, &QCheckBox::toggled, this, &StatusBarSettingsPage::changed);
 }
 
 StatusBarSettingsPage::~StatusBarSettingsPage()

src/settings/kcm/kcmdolphingeneral.cpp

@@ -55,17 +55,17 @@ DolphinGeneralConfigModule::DolphinGeneralConfigModule(QWidget* parent, const QV
     // initialize 'Behavior' tab
     BehaviorSettingsPage* behaviorPage = new BehaviorSettingsPage(QDir::homePath(), tabWidget);
     tabWidget->addTab(behaviorPage, i18nc("@title:tab Behavior settings", "Behavior"));
-    connect(behaviorPage, SIGNAL(changed()), this, SLOT(changed()));
+    connect(behaviorPage, &BehaviorSettingsPage::changed, this, static_cast<void(DolphinGeneralConfigModule::*)()>(&DolphinGeneralConfigModule::changed));
 
     // initialize 'Previews' tab
     PreviewsSettingsPage* previewsPage = new PreviewsSettingsPage(tabWidget);
     tabWidget->addTab(previewsPage, i18nc("@title:tab Previews settings", "Previews"));
-    connect(previewsPage, SIGNAL(changed()), this, SLOT(changed()));
+    connect(previewsPage, &PreviewsSettingsPage::changed, this, static_cast<void(DolphinGeneralConfigModule::*)()>(&DolphinGeneralConfigModule::changed));
 
     // initialize 'Confirmations' tab
     ConfirmationsSettingsPage* confirmationsPage = new ConfirmationsSettingsPage(tabWidget);
     tabWidget->addTab(confirmationsPage,  i18nc("@title:tab Confirmations settings", "Confirmations"));
-    connect(confirmationsPage, SIGNAL(changed()), this, SLOT(changed()));
+    connect(confirmationsPage, &ConfirmationsSettingsPage::changed, this, static_cast<void(DolphinGeneralConfigModule::*)()>(&DolphinGeneralConfigModule::changed));
 
     m_pages.append(behaviorPage);
     m_pages.append(previewsPage);

src/settings/kcm/kcmdolphinnavigation.cpp

@@ -48,7 +48,7 @@ DolphinNavigationConfigModule::DolphinNavigationConfigModule(QWidget* parent, co
     topLayout->setSpacing(KDialog::spacingHint());
 
     m_navigation = new NavigationSettingsPage(this);
-    connect(m_navigation, SIGNAL(changed()), this, SLOT(changed()));
+    connect(m_navigation, &NavigationSettingsPage::changed, this, static_cast<void(DolphinNavigationConfigModule::*)()>(&DolphinNavigationConfigModule::changed));
     topLayout->addWidget(m_navigation, 0, 0);
 }
 

src/settings/kcm/kcmdolphinservices.cpp

@@ -48,7 +48,7 @@ DolphinServicesConfigModule::DolphinServicesConfigModule(QWidget* parent, const
     topLayout->setSpacing(KDialog::spacingHint());
 
     m_services = new ServicesSettingsPage(this);
-    connect(m_services, SIGNAL(changed()), this, SLOT(changed()));
+    connect(m_services, &ServicesSettingsPage::changed, this, static_cast<void(DolphinServicesConfigModule::*)()>(&DolphinServicesConfigModule::changed));
     topLayout->addWidget(m_services, 0, 0);
 }
 

src/settings/kcm/kcmdolphinviewmodes.cpp

@@ -57,17 +57,17 @@ DolphinViewModesConfigModule::DolphinViewModesConfigModule(QWidget* parent, cons
     // Initialize 'Icons' tab
     ViewSettingsTab* iconsTab = new ViewSettingsTab(ViewSettingsTab::IconsMode, tabWidget);
     tabWidget->addTab(iconsTab, KIcon("view-list-icons"), i18nc("@title:tab", "Icons"));
-    connect(iconsTab, SIGNAL(changed()), this, SLOT(viewModeChanged()));
+    connect(iconsTab, &ViewSettingsTab::changed, this, &DolphinViewModesConfigModule::viewModeChanged);
 
     // Initialize 'Compact' tab
     ViewSettingsTab* compactTab = new ViewSettingsTab(ViewSettingsTab::CompactMode, tabWidget);
     tabWidget->addTab(compactTab, KIcon("view-list-details"), i18nc("@title:tab", "Compact"));
-    connect(compactTab, SIGNAL(changed()), this, SLOT(viewModeChanged()));
+    connect(compactTab, &ViewSettingsTab::changed, this, &DolphinViewModesConfigModule::viewModeChanged);
 
     // Initialize 'Details' tab
     ViewSettingsTab* detailsTab = new ViewSettingsTab(ViewSettingsTab::DetailsMode, tabWidget);
     tabWidget->addTab(detailsTab, KIcon("view-list-tree"), i18nc("@title:tab", "Details"));
-    connect(detailsTab, SIGNAL(changed()), this, SLOT(viewModeChanged()));
+    connect(detailsTab, &ViewSettingsTab::changed, this, &DolphinViewModesConfigModule::viewModeChanged);
 
     m_tabs.append(iconsTab);
     m_tabs.append(compactTab);

src/settings/navigation/navigationsettingspage.cpp

@@ -68,10 +68,10 @@ NavigationSettingsPage::NavigationSettingsPage(QWidget* parent) :
 
     loadSettings();
 
-    connect(m_singleClick, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_singleClick, &QRadioButton::toggled, this, &NavigationSettingsPage::changed);
-    connect(m_doubleClick, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_doubleClick, &QRadioButton::toggled, this, &NavigationSettingsPage::changed);
-    connect(m_openArchivesAsFolder, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_openArchivesAsFolder, &QCheckBox::toggled, this, &NavigationSettingsPage::changed);
-    connect(m_autoExpandFolders, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+    connect(m_autoExpandFolders, &QCheckBox::toggled, this, &NavigationSettingsPage::changed);
 }
 
 NavigationSettingsPage::~NavigationSettingsPage()

src/settings/serviceitemdelegate.cpp

@@ -72,10 +72,10 @@ QList<QWidget*> ServiceItemDelegate::createItemWidgets(const QModelIndex&) const
     QPalette palette = checkBox->palette();
     palette.setColor(QPalette::WindowText, palette.color(QPalette::Text));
     checkBox->setPalette(palette);
-    connect(checkBox, SIGNAL(clicked(bool)), this, SLOT(slotCheckBoxClicked(bool)));
+    connect(checkBox, &QCheckBox::clicked, this, &ServiceItemDelegate::slotCheckBoxClicked);
 
     KPushButton* configureButton = new KPushButton();
-    connect(configureButton, SIGNAL(clicked()), this, SLOT(slotConfigureButtonClicked()));
+    connect(configureButton, &KPushButton::clicked, this, &ServiceItemDelegate::slotConfigureButtonClicked);
 
     return QList<QWidget*>() << checkBox << configureButton;
 }

src/settings/services/servicessettingspage.cpp

@@ -78,12 +78,12 @@ ServicesSettingsPage::ServicesSettingsPage(QWidget* parent) :
     m_listView->setModel(m_sortModel);
     m_listView->setItemDelegate(delegate);
     m_listView->setVerticalScrollMode(QListView::ScrollPerPixel);
-    connect(m_listView, SIGNAL(clicked(QModelIndex)), this, SIGNAL(changed()));
+    connect(m_listView, &QListView::clicked, this, &ServicesSettingsPage::changed);
 
     KNS3::Button* downloadButton = new KNS3::Button(i18nc("@action:button", "Download New Services..."),
                                                     "servicemenu.knsrc",
                                                     this);
-    connect(downloadButton, SIGNAL(dialogFinished(KNS3::Entry::List)), this, SLOT(loadServices()));
+    connect(downloadButton, &KNS3::Button::dialogFinished, this, &ServicesSettingsPage::loadServices);
 
     topLayout->addWidget(label);
     topLayout->addWidget(m_listView);

src/settings/startup/startupsettingspage.cpp

@@ -70,18 +70,18 @@ StartupSettingsPage::StartupSettingsPage(const KUrl& url, QWidget* parent) :
     selectHomeUrlButton->setAccessibleName(i18nc("@action:button", "Select Home Location"));
 #endif
 
-    connect(selectHomeUrlButton, SIGNAL(clicked()),
+    connect(selectHomeUrlButton, &QPushButton::clicked,
-            this, SLOT(selectHomeUrl()));
+            this, &StartupSettingsPage::selectHomeUrl);
 
     KHBox* buttonBox = new KHBox(homeBox);
     buttonBox->setSpacing(spacing);
 
     QPushButton* useCurrentButton = new QPushButton(i18nc("@action:button", "Use Current Location"), buttonBox);
-    connect(useCurrentButton, SIGNAL(clicked()),
+    connect(useCurrentButton, &QPushButton::clicked,
-            this, SLOT(useCurrentLocation()));
+            this, &StartupSettingsPage::useCurrentLocation);
     QPushButton* useDefaultButton = new QPushButton(i18nc("@action:button", "Use Default Location"), buttonBox);
-    connect(useDefaultButton, SIGNAL(clicked()),
+    connect(useDefaultButton, &QPushButton::clicked,
-            this, SLOT(useDefaultLocation()));
+            this, &StartupSettingsPage::useDefaultLocation);
 
     QVBoxLayout* homeBoxLayout = new QVBoxLayout(homeBox);
     homeBoxLayout->addWidget(homeUrlBox);
@@ -102,11 +102,11 @@ StartupSettingsPage::StartupSettingsPage(const KUrl& url, QWidget* parent) :
 
     loadSettings();
 
-    connect(m_homeUrl, SIGNAL(textChanged(QString)), this, SLOT(slotSettingsChanged()));
+    connect(m_homeUrl, &KLineEdit::textChanged, this, &StartupSettingsPage::slotSettingsChanged);
-    connect(m_splitView,    SIGNAL(toggled(bool)), this, SLOT(slotSettingsChanged()));
+    connect(m_splitView,    &QCheckBox::toggled, this, &StartupSettingsPage::slotSettingsChanged);
-    connect(m_editableUrl,  SIGNAL(toggled(bool)), this, SLOT(slotSettingsChanged()));
+    connect(m_editableUrl,  &QCheckBox::toggled, this, &StartupSettingsPage::slotSettingsChanged);
-    connect(m_showFullPath, SIGNAL(toggled(bool)), this, SLOT(slotSettingsChanged()));
+    connect(m_showFullPath, &QCheckBox::toggled, this, &StartupSettingsPage::slotSettingsChanged);
-    connect(m_filterBar,    SIGNAL(toggled(bool)), this, SLOT(slotSettingsChanged()));
+    connect(m_filterBar,    &QCheckBox::toggled, this, &StartupSettingsPage::slotSettingsChanged);
 }
 
 StartupSettingsPage::~StartupSettingsPage()

src/settings/trash/trashsettingspage.cpp

@@ -45,7 +45,7 @@ TrashSettingsPage::TrashSettingsPage(QWidget* parent) :
 
     loadSettings();
 
-    connect(m_proxy, SIGNAL(changed(bool)), this, SIGNAL(changed()));
+    connect(m_proxy, static_cast<void(KCModuleProxy::*)(bool)>(&KCModuleProxy::changed), this, &TrashSettingsPage::changed);
 }
 
 TrashSettingsPage::~TrashSettingsPage()

src/settings/viewmodes/dolphinfontrequester.cpp

@@ -41,12 +41,12 @@ DolphinFontRequester::DolphinFontRequester(QWidget* parent) :
     m_modeCombo = new KComboBox(this);
     m_modeCombo->addItem(i18nc("@item:inlistbox Font", "System Font"));
     m_modeCombo->addItem(i18nc("@item:inlistbox Font", "Custom Font"));
-    connect(m_modeCombo, SIGNAL(activated(int)),
+    connect(m_modeCombo, static_cast<void(KComboBox::*)(int)>(&KComboBox::activated),
-            this, SLOT(changeMode(int)));
+            this, &DolphinFontRequester::changeMode);
 
     m_chooseFontButton = new QPushButton(i18nc("@action:button Choose font", "Choose..."), this);
-    connect(m_chooseFontButton, SIGNAL(clicked()),
+    connect(m_chooseFontButton, &QPushButton::clicked,
-            this, SLOT(openFontDialog()));
+            this, &DolphinFontRequester::openFontDialog);
 
     changeMode(m_modeCombo->currentIndex());
 

src/settings/viewmodes/viewsettingspage.cpp

@@ -43,17 +43,17 @@ ViewSettingsPage::ViewSettingsPage(QWidget* parent) :
     // Initialize 'Icons' tab
     ViewSettingsTab* iconsTab = new ViewSettingsTab(ViewSettingsTab::IconsMode, tabWidget);
     tabWidget->addTab(iconsTab, QIcon::fromTheme("view-list-icons"), i18nc("@title:tab", "Icons"));
-    connect(iconsTab, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(iconsTab, &ViewSettingsTab::changed, this, &ViewSettingsPage::changed);
 
     // Initialize 'Compact' tab
     ViewSettingsTab* compactTab = new ViewSettingsTab(ViewSettingsTab::CompactMode, tabWidget);
     tabWidget->addTab(compactTab, QIcon::fromTheme("view-list-details"), i18nc("@title:tab", "Compact"));
-    connect(compactTab, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(compactTab, &ViewSettingsTab::changed, this, &ViewSettingsPage::changed);
 
     // Initialize 'Details' tab
     ViewSettingsTab* detailsTab = new ViewSettingsTab(ViewSettingsTab::DetailsMode, tabWidget);
     tabWidget->addTab(detailsTab, QIcon::fromTheme("view-list-tree"), i18nc("@title:tab", "Details"));
-    connect(detailsTab, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(detailsTab, &ViewSettingsTab::changed, this, &ViewSettingsPage::changed);
 
     m_tabs.append(iconsTab);
     m_tabs.append(compactTab);

src/settings/viewmodes/viewsettingstab.cpp

@@ -61,16 +61,16 @@ ViewSettingsTab::ViewSettingsTab(Mode mode, QWidget* parent) :
     m_defaultSizeSlider->setPageStep(1);
     m_defaultSizeSlider->setTickPosition(QSlider::TicksBelow);
     m_defaultSizeSlider->setRange(minRange, maxRange);
-    connect(m_defaultSizeSlider, SIGNAL(valueChanged(int)),
+    connect(m_defaultSizeSlider, &QSlider::valueChanged,
-            this, SLOT(slotDefaultSliderMoved(int)));
+            this, &ViewSettingsTab::slotDefaultSliderMoved);
 
     QLabel* previewLabel = new QLabel(i18nc("@label:listbox", "Preview:"), this);
     m_previewSizeSlider = new QSlider(Qt::Horizontal, this);
     m_previewSizeSlider->setPageStep(1);
     m_previewSizeSlider->setTickPosition(QSlider::TicksBelow);
     m_previewSizeSlider->setRange(minRange, maxRange);
-    connect(m_previewSizeSlider, SIGNAL(valueChanged(int)),
+    connect(m_previewSizeSlider, &QSlider::valueChanged,
-            this, SLOT(slotPreviewSliderMoved(int)));
+            this, &ViewSettingsTab::slotPreviewSliderMoved);
 
     QGridLayout* layout = new QGridLayout(iconSizeGroup);
     layout->addWidget(defaultLabel, 0, 0, Qt::AlignRight);
@@ -138,20 +138,20 @@ ViewSettingsTab::ViewSettingsTab(Mode mode, QWidget* parent) :
 
     loadSettings();
 
-    connect(m_defaultSizeSlider, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
+    connect(m_defaultSizeSlider, &QSlider::valueChanged, this, &ViewSettingsTab::changed);
-    connect(m_previewSizeSlider, SIGNAL(valueChanged(int)), this, SIGNAL(changed()));
+    connect(m_previewSizeSlider, &QSlider::valueChanged, this, &ViewSettingsTab::changed);
-    connect(m_fontRequester, SIGNAL(changed()), this, SIGNAL(changed()));
+    connect(m_fontRequester, &DolphinFontRequester::changed, this, &ViewSettingsTab::changed);
 
     switch (m_mode) {
     case IconsMode:
-        connect(m_widthBox, SIGNAL(currentIndexChanged(int)), this, SIGNAL(changed()));
+        connect(m_widthBox, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged), this, &ViewSettingsTab::changed);
-        connect(m_maxLinesBox, SIGNAL(currentIndexChanged(int)), this, SIGNAL(changed()));
+        connect(m_maxLinesBox, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged), this, &ViewSettingsTab::changed);
         break;
     case CompactMode:
-        connect(m_widthBox, SIGNAL(currentIndexChanged(int)), this, SIGNAL(changed()));
+        connect(m_widthBox, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged), this, &ViewSettingsTab::changed);
         break;
     case DetailsMode:
-        connect(m_expandableFolders, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+        connect(m_expandableFolders, &QCheckBox::toggled, this, &ViewSettingsTab::changed);
         break;
     default:
         break;

src/settings/viewpropertiesdialog.cpp

@@ -138,25 +138,25 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
 
     topLayout->addWidget(propsBox);
 
-    connect(m_viewMode, SIGNAL(currentIndexChanged(int)),
+    connect(m_viewMode, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged),
-            this, SLOT(slotViewModeChanged(int)));
+            this, &ViewPropertiesDialog::slotViewModeChanged);
-    connect(m_sorting, SIGNAL(currentIndexChanged(int)),
+    connect(m_sorting, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged),
-            this, SLOT(slotSortingChanged(int)));
+            this, &ViewPropertiesDialog::slotSortingChanged);
-    connect(m_sortOrder, SIGNAL(currentIndexChanged(int)),
+    connect(m_sortOrder, static_cast<void(KComboBox::*)(int)>(&KComboBox::currentIndexChanged),
-            this, SLOT(slotSortOrderChanged(int)));
+            this, &ViewPropertiesDialog::slotSortOrderChanged);
-    connect(m_additionalInfo, SIGNAL(clicked()),
+    connect(m_additionalInfo, &QPushButton::clicked,
-            this, SLOT(configureAdditionalInfo()));
+            this, &ViewPropertiesDialog::configureAdditionalInfo);
-    connect(m_sortFoldersFirst, SIGNAL(clicked()),
+    connect(m_sortFoldersFirst, &QCheckBox::clicked,
-            this, SLOT(slotSortFoldersFirstChanged()));
+            this, &ViewPropertiesDialog::slotSortFoldersFirstChanged);
-    connect(m_previewsShown, SIGNAL(clicked()),
+    connect(m_previewsShown, &QCheckBox::clicked,
-            this, SLOT(slotShowPreviewChanged()));
+            this, &ViewPropertiesDialog::slotShowPreviewChanged);
-    connect(m_showInGroups, SIGNAL(clicked()),
+    connect(m_showInGroups, &QCheckBox::clicked,
-            this, SLOT(slotGroupedSortingChanged()));
+            this, &ViewPropertiesDialog::slotGroupedSortingChanged);
-    connect(m_showHiddenFiles, SIGNAL(clicked()),
+    connect(m_showHiddenFiles, &QCheckBox::clicked,
-            this, SLOT(slotShowHiddenFilesChanged()));
+            this, &ViewPropertiesDialog::slotShowHiddenFilesChanged);
 
-    connect(this, SIGNAL(okClicked()), this, SLOT(slotOk()));
+    connect(this, &ViewPropertiesDialog::okClicked, this, &ViewPropertiesDialog::slotOk);
-    connect(this, SIGNAL(applyClicked()), this, SLOT(slotApply()));
+    connect(this, &ViewPropertiesDialog::applyClicked, this, &ViewPropertiesDialog::slotApply);
 
     // Only show the following settings if the view properties are remembered
     // for each directory:
@@ -187,14 +187,14 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
         topLayout->addWidget(applyBox);
         topLayout->addWidget(m_useAsDefault);
 
-        connect(m_applyToCurrentFolder, SIGNAL(clicked(bool)),
+        connect(m_applyToCurrentFolder, &QRadioButton::clicked,
-                this, SLOT(markAsDirty(bool)));
+                this, &ViewPropertiesDialog::markAsDirty);
-        connect(m_applyToSubFolders, SIGNAL(clicked(bool)),
+        connect(m_applyToSubFolders, &QRadioButton::clicked,
-                this, SLOT(markAsDirty(bool)));
+                this, &ViewPropertiesDialog::markAsDirty);
-        connect(m_applyToAllFolders, SIGNAL(clicked(bool)),
+        connect(m_applyToAllFolders, &QRadioButton::clicked,
-                this, SLOT(markAsDirty(bool)));
+                this, &ViewPropertiesDialog::markAsDirty);
-        connect(m_useAsDefault, SIGNAL(clicked(bool)),
+        connect(m_useAsDefault, &QCheckBox::clicked,
-                this, SLOT(markAsDirty(bool)));
+                this, &ViewPropertiesDialog::markAsDirty);
     }
 
     main->setLayout(topLayout);

src/settings/viewpropsprogressinfo.cpp

@@ -75,18 +75,18 @@ ViewPropsProgressInfo::ViewPropsProgressInfo(QWidget* parent,
     // allows to give a progress indication for the user when applying the view
     // properties later.
     m_dirSizeJob = KIO::directorySize(dir);
-    connect(m_dirSizeJob, SIGNAL(result(KJob*)),
+    connect(m_dirSizeJob, &KIO::DirectorySizeJob::result,
-            this, SLOT(applyViewProperties()));
+            this, &ViewPropsProgressInfo::applyViewProperties);
 
     // The directory size job cannot emit any progress signal, as it is not aware
     // about the total number of directories. Therefor a timer is triggered, which
     // periodically updates the current directory count.
     m_timer = new QTimer(this);
-    connect(m_timer, SIGNAL(timeout()),
+    connect(m_timer, &QTimer::timeout,
-            this, SLOT(updateProgress()));
+            this, &ViewPropsProgressInfo::updateProgress);
     m_timer->start(300);
 
-    connect(this, SIGNAL(cancelClicked()), this, SLOT(cancelApplying()));
+    connect(this, &ViewPropsProgressInfo::cancelClicked, this, &ViewPropsProgressInfo::cancelApplying);
 }
 
 ViewPropsProgressInfo::~ViewPropsProgressInfo()
@@ -128,8 +128,8 @@ void ViewPropsProgressInfo::applyViewProperties()
     m_dirSizeJob = 0;
 
     m_applyViewPropsJob = new ApplyViewPropsJob(m_dir, *m_viewProps);
-    connect(m_applyViewPropsJob, SIGNAL(result(KJob*)),
+    connect(m_applyViewPropsJob, &ApplyViewPropsJob::result,
-            this, SLOT(close()));
+            this, &ViewPropsProgressInfo::close);
 }
 
 void ViewPropsProgressInfo::cancelApplying()

src/statusbar/dolphinstatusbar.cpp

@@ -72,8 +72,8 @@ DolphinStatusBar::DolphinStatusBar(QWidget* parent) :
     m_zoomSlider->setPageStep(1);
     m_zoomSlider->setRange(ZoomLevelInfo::minimumLevel(), ZoomLevelInfo::maximumLevel());
 
-    connect(m_zoomSlider, SIGNAL(valueChanged(int)), this, SIGNAL(zoomLevelChanged(int)));
+    connect(m_zoomSlider, &QSlider::valueChanged, this, &DolphinStatusBar::zoomLevelChanged);
-    connect(m_zoomSlider, SIGNAL(sliderMoved(int)), this, SLOT(showZoomSliderToolTip(int)));
+    connect(m_zoomSlider, &QSlider::sliderMoved, this, &DolphinStatusBar::showZoomSliderToolTip);
 
     // Initialize space information
     m_spaceInfo = new StatusBarSpaceInfo(this);
@@ -85,7 +85,7 @@ DolphinStatusBar::DolphinStatusBar(QWidget* parent) :
     m_stopButton->setAutoRaise(true);
     m_stopButton->setToolTip(i18nc("@tooltip", "Stop loading"));
     m_stopButton->hide();
-    connect(m_stopButton, SIGNAL(clicked()), this, SIGNAL(stopPressed()));
+    connect(m_stopButton, &QToolButton::clicked, this, &DolphinStatusBar::stopPressed);
 
     m_progressTextLabel = new QLabel(this);
     m_progressTextLabel->hide();
@@ -96,12 +96,12 @@ DolphinStatusBar::DolphinStatusBar(QWidget* parent) :
     m_showProgressBarTimer = new QTimer(this);
     m_showProgressBarTimer->setInterval(500);
     m_showProgressBarTimer->setSingleShot(true);
-    connect(m_showProgressBarTimer, SIGNAL(timeout()), this, SLOT(updateProgressInfo()));
+    connect(m_showProgressBarTimer, &QTimer::timeout, this, &DolphinStatusBar::updateProgressInfo);
 
     m_resetToDefaultTextTimer = new QTimer(this);
     m_resetToDefaultTextTimer->setInterval(ResetToDefaultTimeout);
     m_resetToDefaultTextTimer->setSingleShot(true);
-    connect(m_resetToDefaultTextTimer, SIGNAL(timeout()), this, SLOT(slotResetToDefaultText()));
+    connect(m_resetToDefaultTextTimer, &QTimer::timeout, this, &DolphinStatusBar::slotResetToDefaultText);
 
     // Initialize top layout and size policies
     const int fontHeight = QFontMetrics(m_label->font()).height();

src/statusbar/statusbarspaceinfo.cpp

@@ -35,7 +35,7 @@ StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
     // Use a timer to update the space information. Polling is useful
     // here, as files can be deleted/added outside the scope of Dolphin.
     m_timer = new QTimer(this);
-    connect(m_timer, SIGNAL(timeout()), this, SLOT(calculateSpaceInfo()));
+    connect(m_timer, &QTimer::timeout, this, &StatusBarSpaceInfo::calculateSpaceInfo);
 }
 
 StatusBarSpaceInfo::~StatusBarSpaceInfo()