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List:       kde-commits
Subject:    [plasma-workspace] /: Use nullptr
From:       Laurent Montel <null () kde ! org>
Date:       2018-01-28 19:55:50
Message-ID: E1eft3O-0007yd-Th () code ! kde ! org
[Download RAW message or body]

Git commit 31421a6e5f8bcb31046f4f798e5a2a09fffb23e5 by Laurent Montel.
Committed on 28/01/2018 at 19:55.
Pushed by mlaurent into branch 'master'.

Use nullptr

M  +1    -1    applets/appmenu/plugin/appmenumodel.h
M  +2    -2    applets/digital-clock/plugin/timezonemodel.h
M  +1    -1    applets/digital-clock/plugin/timezonesi18n.h
M  +1    -1    applets/notifications/plugin/draghelper.h
M  +1    -1    applets/notifications/plugin/notificationshelper.h
M  +1    -1    components/keyboardlayout/keyboardlayout.h
M  +2    -2    components/shellprivate/widgetexplorer/kcategorizeditemsviewmodels_p.h
M  +2    -2    components/shellprivate/widgetexplorer/widgetexplorer.h
M  +1    -1    dataengines/activities/activityjob.h
M  +1    -1    dataengines/applicationjobs/kuiserverengine.h
M  +1    -1    dataengines/apps/appjob.h
M  +1    -1    dataengines/executable/executable.h
M  +1    -1    dataengines/mpris2/multiplexedservice.h
M  +1    -1    dataengines/mpris2/multiplexer.h
M  +1    -1    dataengines/packagekit/packagekitservice.h
M  +1    -1    dataengines/powermanagement/powermanagementjob.h
M  +1    -1    dataengines/powermanagement/powermanagementservice.h
M  +1    -1    dataengines/share/shareprovider.h
M  +1    -1    dataengines/share/shareservice.h
M  +1    -1    dataengines/soliddevice/devicesignalmapmanager.h
M  +3    -3    dataengines/soliddevice/devicesignalmapper.h
M  +1    -1    dataengines/soliddevice/hddtemp.h
M  +1    -1    dataengines/time/timeengine.h
M  +1    -1    dataengines/time/timesource.h
M  +1    -1    klipper/clipboardjob.h
M  +3    -3    klipper/editactiondialog.cpp
M  +2    -2    klipper/historyurlitem.cpp
M  +1    -1    klipper/historyurlitem.h
M  +9    -6    klipper/klipper.cpp
M  +1    -1    klipper/klipper.h
M  +1    -1    klipper/tray.cpp
M  +4    -4    klipper/urlgrabber.cpp
M  +1    -1    kuiserver/jobview.h
M  +1    -1    kuiserver/progresslistmodel.h
M  +1    -1    kuiserver/uiserver.cpp
M  +4    -4    kuiserver/uiserver.h
M  +1    -1    libdbusmenuqt/dbusmenuimporter.h
M  +1    -1    libtaskmanager/activityinfo.h
M  +1    -1    libtaskmanager/concatenatetasksproxymodel.h
M  +1    -1    libtaskmanager/flattentaskgroupsproxymodel.h
M  +1    -1    libtaskmanager/launchertasksmodel.h
M  +1    -1    libtaskmanager/startuptasksmodel.h
M  +1    -1    libtaskmanager/taskfilterproxymodel.h
M  +1    -1    libtaskmanager/taskgroupingproxymodel.h
M  +1    -1    libtaskmanager/tasksmodel.h
M  +1    -1    libtaskmanager/virtualdesktopinfo.h
M  +1    -1    libtaskmanager/waylandtasksmodel.h
M  +1    -1    libtaskmanager/windowtasksmodel.h
M  +1    -1    libtaskmanager/xwindowtasksmodel.h
M  +1    -1    phonon/platform_kde/kiomediastream.h
M  +1    -1    runners/bookmarks/browsers/opera.h
M  +10   -8    runners/bookmarks/faviconfromblob.cpp
M  +3    -3    runners/bookmarks/faviconfromblob.h
M  +1    -1    runners/bookmarks/fetchsqlite.h
M  +1    -1    runners/bookmarks/tests/testchromebookmarks.h
M  +1    -1    runners/calculator/qalculate_engine.h
M  +1    -1    shell/alternativeshelper.h
M  +1    -1    shell/currentcontainmentactionsmodel.h
M  +1    -1    shell/scripting/applet.h
M  +1    -1    shell/scripting/containment.h
M  +1    -1    shell/scripting/panel.h
M  +1    -1    shell/scripting/scriptengine.h
M  +1    -1    shell/scripting/widget.h
M  +1    -1    shell/shellcorona.h
M  +1    -2    systemmonitor/ksystemactivitydialog.cpp
M  +1    -1    wallpapers/image/backgroundlistmodel.h
M  +1    -1    wallpapers/image/image.h
M  +1    -1    xembed-sni-proxy/sniproxy.h

https://commits.kde.org/plasma-workspace/31421a6e5f8bcb31046f4f798e5a2a09fffb23e5

diff --git a/applets/appmenu/plugin/appmenumodel.h \
b/applets/appmenu/plugin/appmenumodel.h index 13943967..438472ce 100644
--- a/applets/appmenu/plugin/appmenumodel.h
+++ b/applets/appmenu/plugin/appmenumodel.h
@@ -38,7 +38,7 @@ class AppMenuModel : public QAbstractListModel, public \
                QAbstractNativeEventFilte
     Q_PROPERTY(bool menuAvailable READ menuAvailable WRITE setMenuAvailable NOTIFY \
menuAvailableChanged)  
 public:
-    explicit AppMenuModel(QObject *parent = 0);
+    explicit AppMenuModel(QObject *parent = nullptr);
     ~AppMenuModel();
 
     enum AppMenuRole {
diff --git a/applets/digital-clock/plugin/timezonemodel.h \
b/applets/digital-clock/plugin/timezonemodel.h index 5f1237df..fed9b115 100644
--- a/applets/digital-clock/plugin/timezonemodel.h
+++ b/applets/digital-clock/plugin/timezonemodel.h
@@ -34,7 +34,7 @@ class TimeZoneFilterProxy : public QSortFilterProxyModel
     Q_PROPERTY(QString filterString WRITE setFilterString MEMBER m_filterString \
NOTIFY filterStringChanged)  
 public:
-    explicit TimeZoneFilterProxy(QObject *parent = 0);
+    explicit TimeZoneFilterProxy(QObject *parent = nullptr);
     bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const \
override;  
     void setFilterString(const QString &filterString);
@@ -55,7 +55,7 @@ class TimeZoneModel : public QAbstractListModel
     Q_PROPERTY(QStringList selectedTimeZones WRITE setSelectedTimeZones MEMBER \
m_selectedTimeZones NOTIFY selectedTimeZonesChanged)  
 public:
-    explicit TimeZoneModel(QObject *parent = 0);
+    explicit TimeZoneModel(QObject *parent = nullptr);
     ~TimeZoneModel() override;
 
     enum Roles {
diff --git a/applets/digital-clock/plugin/timezonesi18n.h \
b/applets/digital-clock/plugin/timezonesi18n.h index 15332ab6..ea226e3c 100644
--- a/applets/digital-clock/plugin/timezonesi18n.h
+++ b/applets/digital-clock/plugin/timezonesi18n.h
@@ -31,7 +31,7 @@ class TimezonesI18n : public QObject
     Q_OBJECT
 
 public:
-    TimezonesI18n(QObject *parent = 0);
+    TimezonesI18n(QObject *parent = nullptr);
     Q_INVOKABLE QString i18nCity(const QString &city);
     Q_INVOKABLE QString i18nContinents(const QString &continent);
     Q_INVOKABLE QString i18nCountry(QLocale::Country country);
diff --git a/applets/notifications/plugin/draghelper.h \
b/applets/notifications/plugin/draghelper.h index a70cef58..6c623073 100644
--- a/applets/notifications/plugin/draghelper.h
+++ b/applets/notifications/plugin/draghelper.h
@@ -33,7 +33,7 @@ Q_OBJECT
 Q_PROPERTY(bool dragActive READ dragActive NOTIFY dragActiveChanged)
 
 public:
-    DragHelper(QObject *parent = 0);
+    DragHelper(QObject *parent = nullptr);
     ~DragHelper();
 
     bool dragActive() const;
diff --git a/applets/notifications/plugin/notificationshelper.h \
b/applets/notifications/plugin/notificationshelper.h index 2fe6e01a..64a16981 100644
--- a/applets/notifications/plugin/notificationshelper.h
+++ b/applets/notifications/plugin/notificationshelper.h
@@ -48,7 +48,7 @@ public:
     };
     Q_ENUM(PositionOnScreen)
 
-    NotificationsHelper(QObject *parent = 0);
+    NotificationsHelper(QObject *parent = nullptr);
     ~NotificationsHelper() override;
     Q_INVOKABLE void addNotificationPopup(QObject *win);
     Q_INVOKABLE void closePopup(const QString &sourceName);
diff --git a/components/keyboardlayout/keyboardlayout.h \
b/components/keyboardlayout/keyboardlayout.h index ad2a8337..8cb66b6b 100644
--- a/components/keyboardlayout/keyboardlayout.h
+++ b/components/keyboardlayout/keyboardlayout.h
@@ -44,7 +44,7 @@ class KeyboardLayout : public QObject
                NOTIFY layoutsChanged)
 
 public:
-    KeyboardLayout(QObject *parent = 0);
+    KeyboardLayout(QObject *parent = nullptr);
     ~KeyboardLayout() override;
 
     QString currentLayout() const;
diff --git a/components/shellprivate/widgetexplorer/kcategorizeditemsviewmodels_p.h \
b/components/shellprivate/widgetexplorer/kcategorizeditemsviewmodels_p.h index \
                7f139655..17fe7f60 100644
--- a/components/shellprivate/widgetexplorer/kcategorizeditemsviewmodels_p.h
+++ b/components/shellprivate/widgetexplorer/kcategorizeditemsviewmodels_p.h
@@ -93,7 +93,7 @@ public:
         FilterDataRole = Qt::UserRole+2,
         SeparatorRole = Qt::UserRole+3
     };
-    DefaultFilterModel(QObject *parent = 0);
+    DefaultFilterModel(QObject *parent = nullptr);
 
     QHash<int, QByteArray> roleNames() const override;
 
@@ -130,7 +130,7 @@ class DefaultItemFilterProxyModel : public QSortFilterProxyModel
     Q_PROPERTY(int count READ count NOTIFY countChanged)
 
 public:
-    DefaultItemFilterProxyModel(QObject *parent = 0);
+    DefaultItemFilterProxyModel(QObject *parent = nullptr);
 
     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const \
                override;
     bool lessThan(const QModelIndex &left, const QModelIndex &right) const override;
diff --git a/components/shellprivate/widgetexplorer/widgetexplorer.h \
b/components/shellprivate/widgetexplorer/widgetexplorer.h index 98987dce..14712f42 \
                100644
--- a/components/shellprivate/widgetexplorer/widgetexplorer.h
+++ b/components/shellprivate/widgetexplorer/widgetexplorer.h
@@ -44,7 +44,7 @@ class WidgetAction : public QAction
     Q_PROPERTY(bool separator READ isSeparator WRITE setSeparator NOTIFY \
separatorChanged)  
 public:
-    WidgetAction(QObject *parent = 0);
+    WidgetAction(QObject *parent = nullptr);
     WidgetAction(const QIcon &icon, const QString &text, QObject *parent);
 
 Q_SIGNALS:
@@ -96,7 +96,7 @@ class WidgetExplorer : public QObject, public QQmlParserStatus
     Q_PROPERTY(Plasma::Containment *containment READ containment WRITE \
setContainment NOTIFY containmentChanged)  
 public:
-    explicit WidgetExplorer(QObject *parent = 0);
+    explicit WidgetExplorer(QObject *parent = nullptr);
     ~WidgetExplorer() override;
 
     QString application();
diff --git a/dataengines/activities/activityjob.h \
b/dataengines/activities/activityjob.h index 983e1f01..2cdcf058 100644
--- a/dataengines/activities/activityjob.h
+++ b/dataengines/activities/activityjob.h
@@ -33,7 +33,7 @@ class ActivityJob : public Plasma::ServiceJob
     Q_OBJECT
 
     public:
-        ActivityJob(KActivities::Controller *controller, const QString &id, const \
QString &operation, QMap<QString, QVariant> &parameters, QObject *parent = 0); +      \
ActivityJob(KActivities::Controller *controller, const QString &id, const QString \
&operation, QMap<QString, QVariant> &parameters, QObject *parent = nullptr);  \
~ActivityJob() override;  
     protected:
diff --git a/dataengines/applicationjobs/kuiserverengine.h \
b/dataengines/applicationjobs/kuiserverengine.h index 8b9a627d..ff25c51e 100644
--- a/dataengines/applicationjobs/kuiserverengine.h
+++ b/dataengines/applicationjobs/kuiserverengine.h
@@ -69,7 +69,7 @@ public:
                  Stopped = 2
                };
 
-    JobView(QObject *parent = 0);
+    JobView(QObject *parent = nullptr);
     ~JobView() override;
 
     uint jobId() const;
diff --git a/dataengines/apps/appjob.h b/dataengines/apps/appjob.h
index 3ce0e05b..f2947ca1 100644
--- a/dataengines/apps/appjob.h
+++ b/dataengines/apps/appjob.h
@@ -31,7 +31,7 @@ class AppJob : public Plasma::ServiceJob
     Q_OBJECT
 
     public:
-        AppJob(AppSource *source, const QString &operation, QMap<QString, QVariant> \
&parameters, QObject *parent = 0); +        AppJob(AppSource *source, const QString \
&operation, QMap<QString, QVariant> &parameters, QObject *parent = nullptr);  \
~AppJob() override;  
     protected:
diff --git a/dataengines/executable/executable.h \
b/dataengines/executable/executable.h index 33539541..772d95c2 100644
--- a/dataengines/executable/executable.h
+++ b/dataengines/executable/executable.h
@@ -27,7 +27,7 @@ class ExecutableContainer : public Plasma::DataContainer
 {
     Q_OBJECT
     public:
-        explicit ExecutableContainer(const QString& command, QObject *parent = 0);
+        explicit ExecutableContainer(const QString& command, QObject *parent = \
nullptr);  ~ExecutableContainer() override;
 
     protected Q_SLOTS:
diff --git a/dataengines/mpris2/multiplexedservice.h \
b/dataengines/mpris2/multiplexedservice.h index 37398769..d3165568 100644
--- a/dataengines/mpris2/multiplexedservice.h
+++ b/dataengines/mpris2/multiplexedservice.h
@@ -33,7 +33,7 @@ class MultiplexedService : public Plasma::Service
     Q_OBJECT
 
 public:
-    MultiplexedService(Multiplexer *multiplexer, QObject *parent = 0);
+    MultiplexedService(Multiplexer *multiplexer, QObject *parent = nullptr);
 
 protected:
     Plasma::ServiceJob *createJob(const QString &operation,
diff --git a/dataengines/mpris2/multiplexer.h b/dataengines/mpris2/multiplexer.h
index 7b4d10a2..1dcf318e 100644
--- a/dataengines/mpris2/multiplexer.h
+++ b/dataengines/mpris2/multiplexer.h
@@ -33,7 +33,7 @@ class Multiplexer : public Plasma::DataContainer
 public:
     static const QLatin1String sourceName;
 
-    explicit Multiplexer(QObject *parent = 0);
+    explicit Multiplexer(QObject *parent = nullptr);
 
     void addPlayer(PlayerContainer *container);
     void removePlayer(const QString &name);
diff --git a/dataengines/packagekit/packagekitservice.h \
b/dataengines/packagekit/packagekitservice.h index 0e6158bd..d0357511 100644
--- a/dataengines/packagekit/packagekitservice.h
+++ b/dataengines/packagekit/packagekitservice.h
@@ -28,7 +28,7 @@ class PackagekitService : public Plasma::Service
 {
     Q_OBJECT
 public:
-    PackagekitService(QObject* parent = 0);
+    PackagekitService(QObject* parent = nullptr);
     Plasma::ServiceJob* createJob(const QString& operation, QMap< QString, QVariant \
>& parameters) override;  };
 
diff --git a/dataengines/powermanagement/powermanagementjob.h \
b/dataengines/powermanagement/powermanagementjob.h index ed885784..fbaeb675 100644
--- a/dataengines/powermanagement/powermanagementjob.h
+++ b/dataengines/powermanagement/powermanagementjob.h
@@ -29,7 +29,7 @@ class PowerManagementJob : public Plasma::ServiceJob
 
     public:
         PowerManagementJob(const QString &operation, QMap<QString, QVariant> \
                &parameters,
-                           QObject *parent = 0);
+                           QObject *parent = nullptr);
         ~PowerManagementJob() override;
 
     protected:
diff --git a/dataengines/powermanagement/powermanagementservice.h \
b/dataengines/powermanagement/powermanagementservice.h index 17599f50..85b85000 \
                100644
--- a/dataengines/powermanagement/powermanagementservice.h
+++ b/dataengines/powermanagement/powermanagementservice.h
@@ -32,7 +32,7 @@ class PowerManagementService : public Plasma::Service
     Q_OBJECT
 
 public:
-    PowerManagementService(QObject *parent = 0);
+    PowerManagementService(QObject *parent = nullptr);
     ServiceJob *createJob(const QString &operation, QMap<QString, QVariant> \
&parameters) override;  };
 
diff --git a/dataengines/share/shareprovider.h b/dataengines/share/shareprovider.h
index c64758c8..f3dbd505 100644
--- a/dataengines/share/shareprovider.h
+++ b/dataengines/share/shareprovider.h
@@ -35,7 +35,7 @@ class ShareProvider : public QObject
     Q_OBJECT
 
 public:
-    ShareProvider(KJSEmbed::Engine* engine, QObject *parent = 0);
+    ShareProvider(KJSEmbed::Engine* engine, QObject *parent = nullptr);
 
     QString method() const;
     void setMethod(const QString &method);
diff --git a/dataengines/share/shareservice.h b/dataengines/share/shareservice.h
index 3a5cdf34..47c63dc0 100644
--- a/dataengines/share/shareservice.h
+++ b/dataengines/share/shareservice.h
@@ -52,7 +52,7 @@ class ShareJob : public Plasma::ServiceJob
 
 public:
     ShareJob(const QString &destination, const QString &operation,
-             QMap<QString, QVariant> &parameters, QObject *parent = 0);
+             QMap<QString, QVariant> &parameters, QObject *parent = nullptr);
     ~ShareJob() override;
     void start() override;
 
diff --git a/dataengines/soliddevice/devicesignalmapmanager.h \
b/dataengines/soliddevice/devicesignalmapmanager.h index 8e60f535..3e4856d0 100644
--- a/dataengines/soliddevice/devicesignalmapmanager.h
+++ b/dataengines/soliddevice/devicesignalmapmanager.h
@@ -28,7 +28,7 @@ class DeviceSignalMapManager : public QObject
     Q_OBJECT
 
     public:
-        DeviceSignalMapManager(QObject *parent=0);
+        DeviceSignalMapManager(QObject *parent = nullptr);
         ~DeviceSignalMapManager() override;
 
         void mapDevice(Solid::Battery *battery, const QString &udi);
diff --git a/dataengines/soliddevice/devicesignalmapper.h \
b/dataengines/soliddevice/devicesignalmapper.h index ce4edaa7..45a19cf8 100644
--- a/dataengines/soliddevice/devicesignalmapper.h
+++ b/dataengines/soliddevice/devicesignalmapper.h
@@ -43,7 +43,7 @@ class DeviceSignalMapper : public QSignalMapper
     Q_OBJECT
 
     public:
-        DeviceSignalMapper(QObject *parent=0);
+        DeviceSignalMapper(QObject *parent = nullptr);
         ~DeviceSignalMapper() override;
         
         void setMapping(QObject* device, const QString &udi);
@@ -60,7 +60,7 @@ class BatterySignalMapper : public DeviceSignalMapper
     Q_OBJECT
 
     public:
-        BatterySignalMapper(QObject *parent=0);
+        BatterySignalMapper(QObject *parent = nullptr);
         ~BatterySignalMapper() override;
 
     public Q_SLOTS:
@@ -74,7 +74,7 @@ class StorageAccessSignalMapper : public DeviceSignalMapper
     Q_OBJECT
 
     public:
-        StorageAccessSignalMapper(QObject *parent=0);
+        StorageAccessSignalMapper(QObject *parent = nullptr);
         ~StorageAccessSignalMapper() override;
 
     public Q_SLOTS:
diff --git a/dataengines/soliddevice/hddtemp.h b/dataengines/soliddevice/hddtemp.h
index d3410165..e603498e 100644
--- a/dataengines/soliddevice/hddtemp.h
+++ b/dataengines/soliddevice/hddtemp.h
@@ -35,7 +35,7 @@ class HddTemp : public QObject
     public:
         enum DataType {Temperature=0, Unit};
         
-        HddTemp(QObject *parent=0);
+        HddTemp(QObject *parent = nullptr);
         ~HddTemp() override;
         QStringList sources();
         QVariant data(const QString source, const DataType type) const;
diff --git a/dataengines/time/timeengine.h b/dataengines/time/timeengine.h
index 9cb6810a..292104b0 100644
--- a/dataengines/time/timeengine.h
+++ b/dataengines/time/timeengine.h
@@ -38,7 +38,7 @@ class TimeEngine : public Plasma::DataEngine
     Q_OBJECT
 
     public:
-        explicit TimeEngine(const KPluginInfo &plugin, QObject *parent=0);
+        explicit TimeEngine(const KPluginInfo &plugin, QObject *parent = nullptr);
         TimeEngine(QObject* parent, const QVariantList& args);
         ~TimeEngine() override;
 
diff --git a/dataengines/time/timesource.h b/dataengines/time/timesource.h
index 845ded58..553fff25 100644
--- a/dataengines/time/timesource.h
+++ b/dataengines/time/timesource.h
@@ -31,7 +31,7 @@ class TimeSource : public Plasma::DataContainer
     Q_OBJECT
 
 public:
-    explicit TimeSource(const QString &name, QObject *parent = 0);
+    explicit TimeSource(const QString &name, QObject *parent = nullptr);
     ~TimeSource() override;
     void setTimeZone(const QString &name);
     void updateTime();
diff --git a/klipper/clipboardjob.h b/klipper/clipboardjob.h
index af0114b0..583e5a30 100644
--- a/klipper/clipboardjob.h
+++ b/klipper/clipboardjob.h
@@ -28,7 +28,7 @@ class ClipboardJob : public Plasma::ServiceJob
 {
     Q_OBJECT
 public:
-    ClipboardJob(Klipper *klipper, const QString &destination, const QString \
&operation, const QVariantMap &parameters, QObject *parent=0); +    \
ClipboardJob(Klipper *klipper, const QString &destination, const QString &operation, \
const QVariantMap &parameters, QObject *parent = nullptr);  ~ClipboardJob() override \
= default;  
     void start() override;
diff --git a/klipper/editactiondialog.cpp b/klipper/editactiondialog.cpp
index c001f1cc..ccece962 100644
--- a/klipper/editactiondialog.cpp
+++ b/klipper/editactiondialog.cpp
@@ -52,7 +52,7 @@ namespace {
  */
 class ActionOutputDelegate : public QItemDelegate {
     public:
-        ActionOutputDelegate(QObject* parent = 0) : QItemDelegate(parent){
+        ActionOutputDelegate(QObject* parent = nullptr) : QItemDelegate(parent){
         }
 
         QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& \
/*option*/, const QModelIndex& /*index*/) const override { @@ -124,9 +124,9 @@ void \
ActionDetailModel::setIconForCommand(ClipCommand& cmd)  {
     // let's try to update icon of the item according to command
     QString command = cmd.command;
-    if ( command.contains( ' ' ) ) {
+    if ( command.contains( QLatin1Char(' ') ) ) {
         // get first word
-        command = command.section( ' ', 0, 0 );
+        command = command.section( QLatin1Char(' '), 0, 0 );
     }
 
     QPixmap iconPix = KIconLoader::global()->loadIcon(
diff --git a/klipper/historyurlitem.cpp b/klipper/historyurlitem.cpp
index 12d672bc..0d18853a 100644
--- a/klipper/historyurlitem.cpp
+++ b/klipper/historyurlitem.cpp
@@ -22,7 +22,7 @@
 #include <QCryptographicHash>
 
 namespace {
-    QByteArray compute_uuid(const QList<QUrl>& _urls, KUrlMimeData::MetaDataMap \
_metaData, bool _cut ) { +    QByteArray compute_uuid(const QList<QUrl>& _urls, const \
KUrlMimeData::MetaDataMap &_metaData, bool _cut ) {  QCryptographicHash \
hash(QCryptographicHash::Sha1);  foreach(const QUrl& url, _urls) {
             hash.addData(url.toEncoded());
@@ -36,7 +36,7 @@ namespace {
     }
 }
 
-HistoryURLItem::HistoryURLItem( const QList<QUrl>& _urls, KUrlMimeData::MetaDataMap \
_metaData, bool _cut ) +HistoryURLItem::HistoryURLItem( const QList<QUrl>& _urls, \
const KUrlMimeData::MetaDataMap &_metaData, bool _cut )  : \
HistoryItem(compute_uuid(_urls, _metaData, _cut))  , m_urls( _urls )
     , m_metaData( _metaData )
diff --git a/klipper/historyurlitem.h b/klipper/historyurlitem.h
index 6cf22717..c947025f 100644
--- a/klipper/historyurlitem.h
+++ b/klipper/historyurlitem.h
@@ -29,7 +29,7 @@
 class HistoryURLItem : public HistoryItem
 {
 public:
-    HistoryURLItem( const QList<QUrl>& urls, KUrlMimeData::MetaDataMap metaData, \
bool cut ); +    HistoryURLItem(const QList<QUrl>& urls, const \
KUrlMimeData::MetaDataMap &metaData, bool cut );  QString text() const override;
     bool operator==( const HistoryItem& rhs) const override;
     QMimeData* mimeData() const override;
diff --git a/klipper/klipper.cpp b/klipper/klipper.cpp
index a68627e1..46c0e80c 100644
--- a/klipper/klipper.cpp
+++ b/klipper/klipper.cpp
@@ -251,16 +251,19 @@ QString Klipper::getClipboardContents()
     return getClipboardHistoryItem(0);
 }
 
-void Klipper::showKlipperPopupMenu() {
+void Klipper::showKlipperPopupMenu()
+{
     slotPopupMenu();
 }
-void Klipper::showKlipperManuallyInvokeActionMenu() {
+
+void Klipper::showKlipperManuallyInvokeActionMenu()
+{
     slotRepeatAction();
 }
 
 
 // DBUS - don't call from Klipper itself
-void Klipper::setClipboardContents(QString s)
+void Klipper::setClipboardContents(const QString &s)
 {
     if (s.isEmpty())
         return;
@@ -368,7 +371,7 @@ void Klipper::saveSettings() const
 
 void Klipper::showPopupMenu( QMenu* menu )
 {
-    Q_ASSERT( menu != 0L );
+    Q_ASSERT( menu != nullptr );
 
     QSize size = menu->sizeHint(); // geometry is not valid until it's shown
     QPoint pos = QCursor::pos();
@@ -528,7 +531,7 @@ void Klipper::slotQuit()
     }
 
     saveSession();
-    int autoStart = KMessageBox::questionYesNoCancel(0, i18n("Should Klipper start \
automatically when you login?"), +    int autoStart = \
KMessageBox::questionYesNoCancel(nullptr, i18n("Should Klipper start automatically \
                when you login?"),
                                                      i18n("Automatically Start \
                Klipper?"), KGuiItem(i18n("Start")),
                                                      KGuiItem(i18n("Do Not Start")), \
KStandardGuiItem::cancel(), QStringLiteral("StartAutomatically"));  
@@ -959,7 +962,7 @@ void Klipper::showBarcode(const QSharedPointer< const HistoryItem \
> &item)  
 void Klipper::slotAskClearHistory()
 {
-    int clearHist = KMessageBox::questionYesNo(0,
+    int clearHist = KMessageBox::questionYesNo(nullptr,
                                                i18n("Really delete entire clipboard \
                history?"),
                                                i18n("Delete clipboard history?"),
                                                KStandardGuiItem::yes(),
diff --git a/klipper/klipper.h b/klipper/klipper.h
index 99c71f33..685fae03 100644
--- a/klipper/klipper.h
+++ b/klipper/klipper.h
@@ -54,7 +54,7 @@ class Klipper : public QObject
 
 public Q_SLOTS:
   Q_SCRIPTABLE QString getClipboardContents();
-  Q_SCRIPTABLE void setClipboardContents(QString s);
+  Q_SCRIPTABLE void setClipboardContents(const QString &s);
   Q_SCRIPTABLE void clearClipboardContents();
   Q_SCRIPTABLE void clearClipboardHistory();
   Q_SCRIPTABLE void saveClipboardHistory();
diff --git a/klipper/tray.cpp b/klipper/tray.cpp
index 75fbe7fc..80f93ace 100644
--- a/klipper/tray.cpp
+++ b/klipper/tray.cpp
@@ -33,7 +33,7 @@ KlipperTray::KlipperTray()
     : KStatusNotifierItem()
 {
     setTitle( i18n( "Klipper" ) );
-    QString klipperIconName = QStringLiteral("klipper");
+    const QString klipperIconName = QStringLiteral("klipper");
     setIconByName( klipperIconName );
     setToolTip( klipperIconName, i18n( "Clipboard Contents" ), i18n( "Clipboard is \
empty" ) );  setCategory( SystemServices );
diff --git a/klipper/urlgrabber.cpp b/klipper/urlgrabber.cpp
index 6a7a30fb..2c529ff9 100644
--- a/klipper/urlgrabber.cpp
+++ b/klipper/urlgrabber.cpp
@@ -44,8 +44,8 @@
 #include "historystringitem.h"
 
 URLGrabber::URLGrabber(History* history):
-    m_myCurrentAction(0L),
-    m_myMenu(0L),
+    m_myCurrentAction(nullptr),
+    m_myMenu(nullptr),
     m_myPopupKillTimer(new QTimer( this )),
     m_myPopupKillTimeout(8),
     m_stripWhiteSpace(true),
@@ -368,7 +368,7 @@ void URLGrabber::slotKillPopupMenu()
 
     if ( m_myMenu ) {
         m_myMenu->deleteLater();
-        m_myMenu = 0;
+        m_myMenu = nullptr;
     }
 }
 
@@ -390,7 +390,7 @@ ClipCommand::ClipCommand(const QString&_command, const QString& \
_description,  else
     {
         // try to find suitable icon
-        QString appName = command.section( ' ', 0, 0 );
+        QString appName = command.section( QLatin1Char(' '), 0, 0 );
         if ( !appName.isEmpty() )
         {
             QPixmap iconPix = KIconLoader::global()->loadIcon(
diff --git a/kuiserver/jobview.h b/kuiserver/jobview.h
index d0997d05..216a071b 100644
--- a/kuiserver/jobview.h
+++ b/kuiserver/jobview.h
@@ -64,7 +64,7 @@ public:
         Stopped = 2
     };
 
-    JobView(uint jobId, QObject *parent = 0);
+    JobView(uint jobId, QObject *parent = nullptr);
     ~JobView() override;
 
     void terminate(const QString &errorMessage);
diff --git a/kuiserver/progresslistmodel.h b/kuiserver/progresslistmodel.h
index 875b58e1..a709e3e9 100644
--- a/kuiserver/progresslistmodel.h
+++ b/kuiserver/progresslistmodel.h
@@ -42,7 +42,7 @@ class ProgressListModel: public QAbstractItemModel, protected \
QDBusContext  
 public:
 
-    explicit ProgressListModel(QObject *parent = 0);
+    explicit ProgressListModel(QObject *parent = nullptr);
     ~ProgressListModel() override;
 
     QModelIndex parent(const QModelIndex&) const override;
diff --git a/kuiserver/uiserver.cpp b/kuiserver/uiserver.cpp
index 93717ea6..ea967fdd 100644
--- a/kuiserver/uiserver.cpp
+++ b/kuiserver/uiserver.cpp
@@ -35,7 +35,7 @@
 #include <kconfigdialog.h>
 
 UiServer::UiServer(ProgressListModel* model)
-        : KXmlGuiWindow(0), m_systemTray(0)
+        : KXmlGuiWindow(nullptr)
 {
     //NOTE: if enough people really hate this dialog (having centralized information \
                and such),
     //I imagine we could somehow forward it to the old dialogs, which would be \
                displayed 1 for each job.
diff --git a/kuiserver/uiserver.h b/kuiserver/uiserver.h
index f3dcb753..75f3971c 100644
--- a/kuiserver/uiserver.h
+++ b/kuiserver/uiserver.h
@@ -56,11 +56,11 @@ private Q_SLOTS:
     void showConfigurationDialog();
 
 private:
-    ProgressListDelegate *progressListDelegate;
-    QListView *listProgress;
+    ProgressListDelegate *progressListDelegate = nullptr;
+    QListView *listProgress = nullptr;
 
-    QToolBar *toolBar;
-    QSystemTrayIcon *m_systemTray;
+    QToolBar *toolBar = nullptr;
+    QSystemTrayIcon *m_systemTray = nullptr;
 
 };
 
diff --git a/libdbusmenuqt/dbusmenuimporter.h b/libdbusmenuqt/dbusmenuimporter.h
index 6f91ee91..f6ac4b67 100644
--- a/libdbusmenuqt/dbusmenuimporter.h
+++ b/libdbusmenuqt/dbusmenuimporter.h
@@ -43,7 +43,7 @@ public:
     /**
      * Creates a DBusMenuImporter listening over DBus on service, path
      */
-    DBusMenuImporter(const QString &service, const QString &path, QObject *parent = \
0); +    DBusMenuImporter(const QString &service, const QString &path, QObject \
*parent = nullptr);  
     ~DBusMenuImporter() override;
 
diff --git a/libtaskmanager/activityinfo.h b/libtaskmanager/activityinfo.h
index a11f1f8e..a9c96442 100644
--- a/libtaskmanager/activityinfo.h
+++ b/libtaskmanager/activityinfo.h
@@ -50,7 +50,7 @@ class TASKMANAGER_EXPORT ActivityInfo : public QObject
     Q_PROPERTY(int numberOfRunningActivities READ numberOfRunningActivities NOTIFY \
numberOfRunningActivitiesChanged)  
 public:
-    explicit ActivityInfo(QObject *parent = 0);
+    explicit ActivityInfo(QObject *parent = nullptr);
     virtual ~ActivityInfo();
 
     /**
diff --git a/libtaskmanager/concatenatetasksproxymodel.h \
b/libtaskmanager/concatenatetasksproxymodel.h index e94f3cbc..81d09c16 100644
--- a/libtaskmanager/concatenatetasksproxymodel.h
+++ b/libtaskmanager/concatenatetasksproxymodel.h
@@ -45,7 +45,7 @@ class TASKMANAGER_EXPORT ConcatenateTasksProxyModel : public \
KConcatenateRowsPro  Q_OBJECT
 
 public:
-    explicit ConcatenateTasksProxyModel(QObject *parent = 0);
+    explicit ConcatenateTasksProxyModel(QObject *parent = nullptr);
     virtual ~ConcatenateTasksProxyModel();
 protected:
     QModelIndex mapIfaceToSource(const QModelIndex &index) const override;
diff --git a/libtaskmanager/flattentaskgroupsproxymodel.h \
b/libtaskmanager/flattentaskgroupsproxymodel.h index 8fce155d..65f47dcc 100644
--- a/libtaskmanager/flattentaskgroupsproxymodel.h
+++ b/libtaskmanager/flattentaskgroupsproxymodel.h
@@ -46,7 +46,7 @@ class TASKMANAGER_EXPORT FlattenTaskGroupsProxyModel : public \
KDescendantsProxyM  Q_OBJECT
 
 public:
-    explicit FlattenTaskGroupsProxyModel(QObject *parent = 0);
+    explicit FlattenTaskGroupsProxyModel(QObject *parent = nullptr);
     virtual ~FlattenTaskGroupsProxyModel();
 
     void setSourceModel(QAbstractItemModel *sourceModel) override;
diff --git a/libtaskmanager/launchertasksmodel.h \
b/libtaskmanager/launchertasksmodel.h index 53799e8c..d4920e5f 100644
--- a/libtaskmanager/launchertasksmodel.h
+++ b/libtaskmanager/launchertasksmodel.h
@@ -55,7 +55,7 @@ class TASKMANAGER_EXPORT LauncherTasksModel : public \
                AbstractTasksModel
     Q_PROPERTY(QStringList launcherList READ launcherList WRITE setLauncherList \
NOTIFY launcherListChanged)  
 public:
-    explicit LauncherTasksModel(QObject *parent = 0);
+    explicit LauncherTasksModel(QObject *parent = nullptr);
     virtual ~LauncherTasksModel();
 
     virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) \
                const override;
diff --git a/libtaskmanager/startuptasksmodel.h b/libtaskmanager/startuptasksmodel.h
index 6f3e4fc6..081bdec8 100644
--- a/libtaskmanager/startuptasksmodel.h
+++ b/libtaskmanager/startuptasksmodel.h
@@ -46,7 +46,7 @@ class TASKMANAGER_EXPORT StartupTasksModel : public \
AbstractTasksModel  Q_OBJECT
 
 public:
-    explicit StartupTasksModel(QObject *parent = 0);
+    explicit StartupTasksModel(QObject *parent = nullptr);
     virtual ~StartupTasksModel();
 
     virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) \
                const override;
diff --git a/libtaskmanager/taskfilterproxymodel.h \
b/libtaskmanager/taskfilterproxymodel.h index a869824d..72642731 100644
--- a/libtaskmanager/taskfilterproxymodel.h
+++ b/libtaskmanager/taskfilterproxymodel.h
@@ -59,7 +59,7 @@ class TASKMANAGER_EXPORT TaskFilterProxyModel : public \
QSortFilterProxyModel, pu  Q_PROPERTY(bool demandingAttentionSkipsFilters READ \
demandingAttentionSkipsFilters WRITE setDemandingAttentionSkipsFilters NOTIFY \
demandingAttentionSkipsFiltersChanged)  
 public:
-    explicit TaskFilterProxyModel(QObject *parent = 0);
+    explicit TaskFilterProxyModel(QObject *parent = nullptr);
     virtual ~TaskFilterProxyModel();
 
     void setSourceModel(QAbstractItemModel *sourceModel) override;
diff --git a/libtaskmanager/taskgroupingproxymodel.h \
b/libtaskmanager/taskgroupingproxymodel.h index c6d247f2..39b02788 100644
--- a/libtaskmanager/taskgroupingproxymodel.h
+++ b/libtaskmanager/taskgroupingproxymodel.h
@@ -54,7 +54,7 @@ class TASKMANAGER_EXPORT TaskGroupingProxyModel : public \
QAbstractProxyModel, pu  NOTIFY blacklistedLauncherUrlsChanged)
 
 public:
-    explicit TaskGroupingProxyModel(QObject *parent = 0);
+    explicit TaskGroupingProxyModel(QObject *parent = nullptr);
     virtual ~TaskGroupingProxyModel();
 
     QModelIndex index(int row, int column, const QModelIndex &parent = \
                QModelIndex()) const override;
diff --git a/libtaskmanager/tasksmodel.h b/libtaskmanager/tasksmodel.h
index 38319762..3353cf19 100644
--- a/libtaskmanager/tasksmodel.h
+++ b/libtaskmanager/tasksmodel.h
@@ -105,7 +105,7 @@ public:
     };
     Q_ENUM(GroupMode)
 
-    explicit TasksModel(QObject *parent = 0);
+    explicit TasksModel(QObject *parent = nullptr);
     virtual ~TasksModel();
 
     QHash<int, QByteArray> roleNames() const override;
diff --git a/libtaskmanager/virtualdesktopinfo.h \
b/libtaskmanager/virtualdesktopinfo.h index aca6e768..e8321af5 100644
--- a/libtaskmanager/virtualdesktopinfo.h
+++ b/libtaskmanager/virtualdesktopinfo.h
@@ -55,7 +55,7 @@ class TASKMANAGER_EXPORT VirtualDesktopInfo : public QObject
     Q_PROPERTY(int desktopLayoutRows READ desktopLayoutRows NOTIFY \
desktopLayoutRowsChanged)  
 public:
-    explicit VirtualDesktopInfo(QObject *parent = 0);
+    explicit VirtualDesktopInfo(QObject *parent = nullptr);
     virtual ~VirtualDesktopInfo();
 
     /**
diff --git a/libtaskmanager/waylandtasksmodel.h b/libtaskmanager/waylandtasksmodel.h
index fa640e34..f3145c43 100644
--- a/libtaskmanager/waylandtasksmodel.h
+++ b/libtaskmanager/waylandtasksmodel.h
@@ -54,7 +54,7 @@ class TASKMANAGER_EXPORT WaylandTasksModel : public \
AbstractWindowTasksModel  Q_OBJECT
 
 public:
-    explicit WaylandTasksModel(QObject *parent = 0);
+    explicit WaylandTasksModel(QObject *parent = nullptr);
     virtual ~WaylandTasksModel();
 
     virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) \
                const override;
diff --git a/libtaskmanager/windowtasksmodel.h b/libtaskmanager/windowtasksmodel.h
index 1037fbac..14568d45 100644
--- a/libtaskmanager/windowtasksmodel.h
+++ b/libtaskmanager/windowtasksmodel.h
@@ -45,7 +45,7 @@ class TASKMANAGER_EXPORT WindowTasksModel : public \
QIdentityProxyModel, public A  Q_OBJECT
 
 public:
-    explicit WindowTasksModel(QObject *parent = 0);
+    explicit WindowTasksModel(QObject *parent = nullptr);
     virtual ~WindowTasksModel();
 
     QHash<int, QByteArray> roleNames() const override;
diff --git a/libtaskmanager/xwindowtasksmodel.h b/libtaskmanager/xwindowtasksmodel.h
index 713d982e..2b423204 100644
--- a/libtaskmanager/xwindowtasksmodel.h
+++ b/libtaskmanager/xwindowtasksmodel.h
@@ -52,7 +52,7 @@ class TASKMANAGER_EXPORT XWindowTasksModel : public \
AbstractWindowTasksModel  Q_OBJECT
 
 public:
-    explicit XWindowTasksModel(QObject *parent = 0);
+    explicit XWindowTasksModel(QObject *parent = nullptr);
     virtual ~XWindowTasksModel();
 
     virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) \
                const override;
diff --git a/phonon/platform_kde/kiomediastream.h \
b/phonon/platform_kde/kiomediastream.h index 50ed2566..190ba77a 100644
--- a/phonon/platform_kde/kiomediastream.h
+++ b/phonon/platform_kde/kiomediastream.h
@@ -34,7 +34,7 @@ class KioMediaStream : public AbstractMediaStream
     Q_OBJECT
     Q_DECLARE_PRIVATE(KioMediaStream)
 public:
-    explicit KioMediaStream(const QUrl &url, QObject *parent = 0);
+    explicit KioMediaStream(const QUrl &url, QObject *parent = nullptr);
     ~KioMediaStream() override;
 
 protected:
diff --git a/runners/bookmarks/browsers/opera.h b/runners/bookmarks/browsers/opera.h
index 10b1b203..e2572a22 100644
--- a/runners/bookmarks/browsers/opera.h
+++ b/runners/bookmarks/browsers/opera.h
@@ -32,7 +32,7 @@ class Opera : public QObject, public Browser
 {
 Q_OBJECT
 public:
-    Opera(QObject* parent = 0);
+    Opera(QObject* parent = nullptr);
     QList<BookmarkMatch> match(const QString& term, bool addEverything) override;
 public Q_SLOTS:
     void prepare() override;
diff --git a/runners/bookmarks/faviconfromblob.cpp \
b/runners/bookmarks/faviconfromblob.cpp index 082a8b2e..2ead7e30 100644
--- a/runners/bookmarks/faviconfromblob.cpp
+++ b/runners/bookmarks/faviconfromblob.cpp
@@ -54,14 +54,16 @@ public:
     ChromeQuery() {}
     QString query(QSqlDatabase *database) const override {
       //qDebug() << "tables: " << database->tables();
-      if(database->tables().contains(QStringLiteral("favicon_bitmaps")))
-	return QStringLiteral("SELECT * FROM favicons " \
-            "inner join icon_mapping on icon_mapping.icon_id = favicons.id " \
-            "inner join favicon_bitmaps on icon_mapping.icon_id = \
                favicon_bitmaps.icon_id " \
-            "WHERE page_url = :url ORDER BY height desc LIMIT 1;");
-	return QStringLiteral("SELECT * FROM favicons inner join icon_mapping " \
-	"on icon_mapping.icon_id = favicons.id " \
-	"WHERE page_url = :url LIMIT 1;");
+        if(database->tables().contains(QStringLiteral("favicon_bitmaps"))) {
+            return QStringLiteral("SELECT * FROM favicons " \
+                                  "inner join icon_mapping on icon_mapping.icon_id = \
favicons.id " \ +                                  "inner join favicon_bitmaps on \
icon_mapping.icon_id = favicon_bitmaps.icon_id " \ +                                  \
"WHERE page_url = :url ORDER BY height desc LIMIT 1;"); +        }
+
+        return QStringLiteral("SELECT * FROM favicons inner join icon_mapping " \
+                              "on icon_mapping.icon_id = favicons.id " \
+                              "WHERE page_url = :url LIMIT 1;");
     }
 };
 
diff --git a/runners/bookmarks/faviconfromblob.h \
b/runners/bookmarks/faviconfromblob.h index 48a47499..54a5d20c 100644
--- a/runners/bookmarks/faviconfromblob.h
+++ b/runners/bookmarks/faviconfromblob.h
@@ -29,8 +29,8 @@ class FaviconFromBlob : public Favicon
 {
     Q_OBJECT
 public:
-    static FaviconFromBlob *chrome(const QString &profileDirectory, QObject *parent \
                = 0);
-    static FaviconFromBlob *firefox(FetchSqlite *fetchSqlite, QObject *parent = 0);
+    static FaviconFromBlob *chrome(const QString &profileDirectory, QObject *parent \
= nullptr); +    static FaviconFromBlob *firefox(FetchSqlite *fetchSqlite, QObject \
*parent = nullptr);  ~FaviconFromBlob() override;
     QIcon iconFor(const QString &url) override;
 
@@ -39,7 +39,7 @@ public Q_SLOTS:
     void teardown() override;
 
 private:
-    FaviconFromBlob(const QString &profileName, BuildQuery *buildQuery, const \
QString &blobColumn, FetchSqlite *fetchSqlite, QObject *parent = 0); +    \
FaviconFromBlob(const QString &profileName, BuildQuery *buildQuery, const QString \
&blobColumn, FetchSqlite *fetchSqlite, QObject *parent = nullptr);  QString \
m_profileCacheDirectory;  BuildQuery *m_buildQuery;
     QString const m_blobcolumn;
diff --git a/runners/bookmarks/fetchsqlite.h b/runners/bookmarks/fetchsqlite.h
index c2ad7931..08ff05f7 100644
--- a/runners/bookmarks/fetchsqlite.h
+++ b/runners/bookmarks/fetchsqlite.h
@@ -40,7 +40,7 @@ class FetchSqlite : public QObject
 {
     Q_OBJECT
 public:
-    explicit FetchSqlite(const QString &originalFile, const QString &copyTo, QObject \
*parent = 0); +    explicit FetchSqlite(const QString &originalFile, const QString \
&copyTo, QObject *parent = nullptr);  ~FetchSqlite() override;
     void prepare();
     void teardown();
diff --git a/runners/bookmarks/tests/testchromebookmarks.h \
b/runners/bookmarks/tests/testchromebookmarks.h index 1d1a6117..534ad1aa 100644
--- a/runners/bookmarks/tests/testchromebookmarks.h
+++ b/runners/bookmarks/tests/testchromebookmarks.h
@@ -37,7 +37,7 @@ class TestChromeBookmarks : public QObject
 {
 Q_OBJECT
 public:
-    explicit TestChromeBookmarks(QObject* parent = 0) : QObject(parent) {}
+    explicit TestChromeBookmarks(QObject* parent = nullptr) : QObject(parent) {}
 private Q_SLOTS:
   void initTestCase();
   void bookmarkFinderShouldFindEachProfileDirectory();
diff --git a/runners/calculator/qalculate_engine.h \
b/runners/calculator/qalculate_engine.h index 5bdff27b..783f8e4f 100644
--- a/runners/calculator/qalculate_engine.h
+++ b/runners/calculator/qalculate_engine.h
@@ -29,7 +29,7 @@ class QalculateEngine : public QObject
 {
 	Q_OBJECT
 public:
-	QalculateEngine(QObject* parent = 0);
+	QalculateEngine(QObject* parent = nullptr);
 	~QalculateEngine();
 
 	QString lastResult() const { return m_lastResult; }
diff --git a/shell/alternativeshelper.h b/shell/alternativeshelper.h
index a302bf01..1c2b9aa9 100644
--- a/shell/alternativeshelper.h
+++ b/shell/alternativeshelper.h
@@ -32,7 +32,7 @@ class AlternativesHelper : public QObject
     Q_PROPERTY(QQuickItem *applet READ applet CONSTANT)
 
 public:
-    AlternativesHelper(Plasma::Applet *applet, QObject *parent = 0);
+    AlternativesHelper(Plasma::Applet *applet, QObject *parent = nullptr);
     ~AlternativesHelper() override;
 
     QQuickItem *applet() const;
diff --git a/shell/currentcontainmentactionsmodel.h \
b/shell/currentcontainmentactionsmodel.h index ef6095c3..24637875 100644
--- a/shell/currentcontainmentactionsmodel.h
+++ b/shell/currentcontainmentactionsmodel.h
@@ -45,7 +45,7 @@ public:
         HasConfigurationInterfaceRole
     };
 
-    CurrentContainmentActionsModel(Plasma::Containment *cotainment, QObject *parent \
= 0); +    CurrentContainmentActionsModel(Plasma::Containment *cotainment, QObject \
*parent = nullptr);  ~CurrentContainmentActionsModel() override;
 
     QHash<int, QByteArray> roleNames() const override;
diff --git a/shell/scripting/applet.h b/shell/scripting/applet.h
index 08306561..95044851 100644
--- a/shell/scripting/applet.h
+++ b/shell/scripting/applet.h
@@ -40,7 +40,7 @@ class Applet : public QObject
     Q_PROPERTY(QStringList currentConfigGroup WRITE setCurrentConfigGroup READ \
currentConfigGroup)  
 public:
-    Applet(QObject *parent = 0);
+    Applet(QObject *parent = nullptr);
     ~Applet() override;
 
     QStringList configKeys() const;
diff --git a/shell/scripting/containment.h b/shell/scripting/containment.h
index 2b76e158..981898c3 100644
--- a/shell/scripting/containment.h
+++ b/shell/scripting/containment.h
@@ -54,7 +54,7 @@ class Containment : public Applet
     Q_PROPERTY(int id READ id)
 
 public:
-    Containment(Plasma::Containment *containment, QObject *parent = 0);
+    Containment(Plasma::Containment *containment, QObject *parent = nullptr);
     ~Containment() override;
 
     uint id() const;
diff --git a/shell/scripting/panel.h b/shell/scripting/panel.h
index 0d707848..0fc48f21 100644
--- a/shell/scripting/panel.h
+++ b/shell/scripting/panel.h
@@ -61,7 +61,7 @@ class Panel : public Containment
     Q_PROPERTY(QString hiding READ hiding WRITE setHiding)
 
 public:
-    Panel(Plasma::Containment *containment, QObject *parent = 0);
+    Panel(Plasma::Containment *containment, QObject *parent = nullptr);
     ~Panel() override;
 
     QString location() const;
diff --git a/shell/scripting/scriptengine.h b/shell/scripting/scriptengine.h
index 30309bbf..8e7b0476 100644
--- a/shell/scripting/scriptengine.h
+++ b/shell/scripting/scriptengine.h
@@ -46,7 +46,7 @@ class ScriptEngine : public QScriptEngine
     Q_OBJECT
 
 public:
-    ScriptEngine(Plasma::Corona *corona, QObject *parent = 0);
+    ScriptEngine(Plasma::Corona *corona, QObject *parent = nullptr);
     ~ScriptEngine() override;
 
     static QStringList pendingUpdateScripts(Plasma::Corona *corona);
diff --git a/shell/scripting/widget.h b/shell/scripting/widget.h
index 6170a3d7..b9411d46 100644
--- a/shell/scripting/widget.h
+++ b/shell/scripting/widget.h
@@ -49,7 +49,7 @@ class Widget : public Applet
     Q_PROPERTY(bool locked READ locked WRITE setLocked)
 
 public:
-    Widget(Plasma::Applet *applet, QObject *parent = 0);
+    Widget(Plasma::Applet *applet, QObject *parent = nullptr);
     ~Widget() override;
 
     uint id() const;
diff --git a/shell/shellcorona.h b/shell/shellcorona.h
index 84c43915..843024cc 100644
--- a/shell/shellcorona.h
+++ b/shell/shellcorona.h
@@ -73,7 +73,7 @@ class ShellCorona : public Plasma::Corona, QDBusContext
     Q_CLASSINFO("D-Bus Interface", "org.kde.PlasmaShell")
 
 public:
-    explicit ShellCorona(QObject *parent = 0);
+    explicit ShellCorona(QObject *parent = nullptr);
     ~ShellCorona() override;
 
     KPackage::Package lookAndFeelPackage();
diff --git a/systemmonitor/ksystemactivitydialog.cpp \
b/systemmonitor/ksystemactivitydialog.cpp index c945a25e..b01d340f 100644
--- a/systemmonitor/ksystemactivitydialog.cpp
+++ b/systemmonitor/ksystemactivitydialog.cpp
@@ -47,8 +47,7 @@ KSystemActivityDialog::KSystemActivityDialog(QWidget *parent)
 {
     setWindowTitle(i18n("System Activity"));
     setWindowIcon(QIcon::fromTheme(QStringLiteral( "utilities-system-monitor" )));
-    QVBoxLayout *mainLayout = new QVBoxLayout;
-    setLayout(mainLayout);
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
     mainLayout->addWidget(&m_processList);
     m_processList.setScriptingEnabled(true);
     setSizeGripEnabled(true);
diff --git a/wallpapers/image/backgroundlistmodel.h \
b/wallpapers/image/backgroundlistmodel.h index 7c9b31fc..a1945166 100644
--- a/wallpapers/image/backgroundlistmodel.h
+++ b/wallpapers/image/backgroundlistmodel.h
@@ -44,7 +44,7 @@ class ImageSizeFinder : public QObject, public QRunnable
 {
     Q_OBJECT
     public:
-        ImageSizeFinder(const QString &path, QObject *parent = 0);
+        ImageSizeFinder(const QString &path, QObject *parent = nullptr);
         void run() override;
 
     Q_SIGNALS:
diff --git a/wallpapers/image/image.h b/wallpapers/image/image.h
index 40eb58e2..6306a5c2 100644
--- a/wallpapers/image/image.h
+++ b/wallpapers/image/image.h
@@ -71,7 +71,7 @@ class Image : public QObject, public QQmlParserStatus
         };
         Q_ENUM(RenderingMode)
 
-        Image(QObject* parent = 0);
+        Image(QObject* parent = nullptr);
         ~Image() override;
 
         QUrl wallpaperPath() const;
diff --git a/xembed-sni-proxy/sniproxy.h b/xembed-sni-proxy/sniproxy.h
index e897a920..d5f62237 100644
--- a/xembed-sni-proxy/sniproxy.h
+++ b/xembed-sni-proxy/sniproxy.h
@@ -44,7 +44,7 @@ class SNIProxy : public QObject
     Q_PROPERTY(KDbusImageVector IconPixmap READ IconPixmap)
 
 public:
-    SNIProxy(xcb_window_t wid, QObject *parent=0);
+    SNIProxy(xcb_window_t wid, QObject *parent = nullptr);
     ~SNIProxy() override;
 
     void update();


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