Use nullptr + add explicit keyword

Test Plan: compile

Reviewers: #dolphin, broulik

Reviewed By: broulik

Subscribers: #dolphin

Differential Revision: https://phabricator.kde.org/D8637

12 files changed, 31 insertions, 30 deletions

diff --git a/src/panels/folders/folderspanel.cpp b/src/panels/folders/folderspanel.cpp
index cb35fd218..eef27ce47 100644
--- a/src/panels/folders/folderspanel.cpp
+++ b/src/panels/folders/folderspanel.cpp
@@ -55,8 +55,8 @@
 FoldersPanel::FoldersPanel(QWidget* parent) :
     Panel(parent),
     m_updateCurrentItem(false),
-    m_controller(0),
-    m_model(0)
+    m_controller(nullptr),
+    m_model(nullptr)
 {
     setLayoutDirection(Qt::LeftToRight);
 }
@@ -67,7 +67,7 @@ FoldersPanel::~FoldersPanel()
 
     if (m_controller) {
         KItemListView* view = m_controller->view();
-        m_controller->setView(0);
+        m_controller->setView(nullptr);
         delete view;
     }
 }
diff --git a/src/panels/folders/folderspanel.h b/src/panels/folders/folderspanel.h
index 5f0b9a378..ab6c41b34 100644
--- a/src/panels/folders/folderspanel.h
+++ b/src/panels/folders/folderspanel.h
@@ -39,7 +39,7 @@ class FoldersPanel : public Panel
     Q_OBJECT
 
 public:
-    FoldersPanel(QWidget* parent = 0);
+    explicit FoldersPanel(QWidget* parent = nullptr);
     virtual ~FoldersPanel();
 
     void setShowHiddenFiles(bool show);
diff --git a/src/panels/information/filemetadataconfigurationdialog.cpp b/src/panels/information/filemetadataconfigurationdialog.cpp
index 5671d34ef..050e78cfd 100644
--- a/src/panels/information/filemetadataconfigurationdialog.cpp
+++ b/src/panels/information/filemetadataconfigurationdialog.cpp
@@ -35,8 +35,8 @@
 
 FileMetaDataConfigurationDialog::FileMetaDataConfigurationDialog(QWidget* parent) :
     QDialog(parent),
-    m_descriptionLabel(0),
-    m_configWidget(0)
+    m_descriptionLabel(nullptr),
+    m_configWidget(nullptr)
 
 {
     setWindowTitle(i18nc("@title:window", "Configure Shown Data"));
diff --git a/src/panels/information/informationpanel.cpp b/src/panels/information/informationpanel.cpp
index 16dc721b2..850d94d92 100644
--- a/src/panels/information/informationpanel.cpp
+++ b/src/panels/information/informationpanel.cpp
@@ -32,16 +32,16 @@
 InformationPanel::InformationPanel(QWidget* parent) :
     Panel(parent),
     m_initialized(false),
-    m_infoTimer(0),
-    m_urlChangedTimer(0),
-    m_resetUrlTimer(0),
+    m_infoTimer(nullptr),
+    m_urlChangedTimer(nullptr),
+    m_resetUrlTimer(nullptr),
     m_shownUrl(),
     m_urlCandidate(),
     m_invalidUrlCandidate(),
     m_fileItem(),
     m_selection(),
-    m_folderStatJob(0),
-    m_content(0)
+    m_folderStatJob(nullptr),
+    m_content(nullptr)
 {
 }
 
diff --git a/src/panels/information/informationpanel.h b/src/panels/information/informationpanel.h
index 78e2d71ff..a698e544f 100644
--- a/src/panels/information/informationpanel.h
+++ b/src/panels/information/informationpanel.h
@@ -36,7 +36,7 @@ class InformationPanel : public Panel
     Q_OBJECT
 
 public:
-    explicit InformationPanel(QWidget* parent = 0);
+    explicit InformationPanel(QWidget* parent = nullptr);
     virtual ~InformationPanel();
 
 signals:
diff --git a/src/panels/information/phononwidget.cpp b/src/panels/information/phononwidget.cpp
index ac4a32506..3a3268cb3 100644
--- a/src/panels/information/phononwidget.cpp
+++ b/src/panels/information/phononwidget.cpp
@@ -41,7 +41,7 @@ class EmbeddedVideoPlayer : public Phonon::VideoWidget
     Q_OBJECT
 
     public:
-        EmbeddedVideoPlayer(QWidget *parent = 0) :
+        EmbeddedVideoPlayer(QWidget *parent = nullptr) :
             Phonon::VideoWidget(parent)
         {
         }
@@ -64,13 +64,13 @@ class EmbeddedVideoPlayer : public Phonon::VideoWidget
 PhononWidget::PhononWidget(QWidget *parent)
     : QWidget(parent),
     m_url(),
-    m_playButton(0),
-    m_stopButton(0),
-    m_topLayout(0),
-    m_media(0),
-    m_seekSlider(0),
-    m_audioOutput(0),
-    m_videoPlayer(0)
+    m_playButton(nullptr),
+    m_stopButton(nullptr),
+    m_topLayout(nullptr),
+    m_media(nullptr),
+    m_seekSlider(nullptr),
+    m_audioOutput(nullptr),
+    m_videoPlayer(nullptr)
 {
 }
 
diff --git a/src/panels/places/placesitem.cpp b/src/panels/places/placesitem.cpp
index 5b8e5dbef..93cc4d5c3 100644
--- a/src/panels/places/placesitem.cpp
+++ b/src/panels/places/placesitem.cpp
@@ -37,8 +37,8 @@ PlacesItem::PlacesItem(const KBookmark& bookmark, PlacesItem* parent) :
     m_volume(),
     m_disc(),
     m_mtp(),
-    m_signalHandler(0),
-    m_trashDirLister(0),
+    m_signalHandler(nullptr),
+    m_trashDirLister(nullptr),
     m_bookmark()
 {
     m_signalHandler = new PlacesItemSignalHandler(this);
diff --git a/src/panels/places/placesitemsignalhandler.h b/src/panels/places/placesitemsignalhandler.h
index f65b57fe1..6110f717d 100644
--- a/src/panels/places/placesitemsignalhandler.h
+++ b/src/panels/places/placesitemsignalhandler.h
@@ -47,7 +47,7 @@ class PlacesItemSignalHandler: public QObject
     Q_OBJECT
 
 public:
-    explicit PlacesItemSignalHandler(PlacesItem* item, QObject* parent = 0);
+    explicit PlacesItemSignalHandler(PlacesItem* item, QObject* parent = nullptr);
     virtual ~PlacesItemSignalHandler();
 
 public slots:
diff --git a/src/panels/places/placespanel.cpp b/src/panels/places/placespanel.cpp
index 0ce6d69a5..0b76f18d3 100644
--- a/src/panels/places/placespanel.cpp
+++ b/src/panels/places/placespanel.cpp
@@ -58,13 +58,14 @@
 
 PlacesPanel::PlacesPanel(QWidget* parent) :
     Panel(parent),
-    m_controller(0),
-    m_model(0),
+    m_controller(nullptr),
+    m_model(nullptr),
+    m_view(nullptr),
     m_storageSetupFailedUrl(),
     m_triggerStorageSetupButton(),
     m_itemDropEventIndex(-1),
-    m_itemDropEventMimeData(0),
-    m_itemDropEvent(0)
+    m_itemDropEventMimeData(nullptr),
+    m_itemDropEvent(nullptr)
 {
 }
 
diff --git a/src/panels/places/placespanel.h b/src/panels/places/placespanel.h
index 13a38df2d..4e525a037 100644
--- a/src/panels/places/placespanel.h
+++ b/src/panels/places/placespanel.h
@@ -39,7 +39,7 @@ class PlacesPanel : public Panel
     Q_OBJECT
 
 public:
-    PlacesPanel(QWidget* parent);
+    explicit PlacesPanel(QWidget* parent);
     virtual ~PlacesPanel();
     void proceedWithTearDown();
 
diff --git a/src/panels/places/placesview.h b/src/panels/places/placesview.h
index 19c99c39b..ba7193525 100644
--- a/src/panels/places/placesview.h
+++ b/src/panels/places/placesview.h
@@ -32,7 +32,7 @@ class PlacesView : public KStandardItemListView
     Q_OBJECT
 
 public:
-    explicit PlacesView(QGraphicsWidget* parent = 0);
+    explicit PlacesView(QGraphicsWidget* parent = nullptr);
 
     void setIconSize(int size);
     int iconSize() const;
diff --git a/src/panels/terminal/terminalpanel.h b/src/panels/terminal/terminalpanel.h
index 3de3b6d30..db5658e53 100644
--- a/src/panels/terminal/terminalpanel.h
+++ b/src/panels/terminal/terminalpanel.h
@@ -45,7 +45,7 @@ class TerminalPanel : public Panel
     Q_OBJECT
 
 public:
-    TerminalPanel(QWidget* parent = 0);
+    explicit TerminalPanel(QWidget* parent = nullptr);
     virtual ~TerminalPanel();
 
     /**