replace all instances of NULL with nullptr

src/widgets/mainwindow.cpp

@@ -65,7 +65,7 @@ void MainWindow::layoutVisibleChatWidgets(Channel *channel)
 {
     auto *page = _notebook.getSelectedPage();
 
-    if (page == NULL) {
+    if (page == nullptr) {
         return;
     }
 
@@ -74,7 +74,7 @@ void MainWindow::layoutVisibleChatWidgets(Channel *channel)
     for (auto it = widgets.begin(); it != widgets.end(); ++it) {
         ChatWidget *widget = *it;
 
-        if (channel == NULL || channel == widget->getChannel().get()) {
+        if (channel == nullptr || channel == widget->getChannel().get()) {
             widget->layoutMessages();
         }
     }
@@ -84,7 +84,7 @@ void MainWindow::repaintVisibleChatWidgets(Channel *channel)
 {
     auto *page = _notebook.getSelectedPage();
 
-    if (page == NULL) {
+    if (page == nullptr) {
         return;
     }
 
@@ -93,7 +93,7 @@ void MainWindow::repaintVisibleChatWidgets(Channel *channel)
     for (auto it = widgets.begin(); it != widgets.end(); ++it) {
         ChatWidget *widget = *it;
 
-        if (channel == NULL || channel == widget->getChannel().get()) {
+        if (channel == nullptr || channel == widget->getChannel().get()) {
             widget->layoutMessages();
         }
     }
@@ -103,7 +103,7 @@ void MainWindow::repaintGifEmotes()
 {
     auto *page = _notebook.getSelectedPage();
 
-    if (page == NULL) {
+    if (page == nullptr) {
         return;
     }
 

src/widgets/notebook.cpp

@@ -67,7 +67,7 @@ void Notebook::removePage(NotebookPage *page)
     int index = _pages.indexOf(page);
 
     if (_pages.size() == 1) {
-        select(NULL);
+        select(nullptr);
     } else if (index == _pages.count() - 1) {
         select(_pages[index - 1]);
     } else {

src/widgets/notebooktab.cpp

@@ -98,7 +98,7 @@ void NotebookTab::moveAnimated(QPoint pos, bool animated)
 {
     _posAnimationDesired = pos;
 
-    if ((window() != NULL && !window()->isVisible()) || !animated || _posAnimated == false) {
+    if ((window() != nullptr && !window()->isVisible()) || !animated || _posAnimated == false) {
         move(pos);
 
         _posAnimated = true;

src/widgets/scrollbar.cpp

@@ -41,7 +41,7 @@ ScrollBar::~ScrollBar()
 {
     auto highlight = _highlights;
 
-    while (highlight != NULL) {
+    while (highlight != nullptr) {
         auto tmp = highlight->next;
         delete highlight;
         highlight = tmp;
@@ -52,12 +52,12 @@ void ScrollBar::removeHighlightsWhere(std::function<bool(ScrollBarHighlight &)>
 {
     _mutex.lock();
 
-    ScrollBarHighlight *last = NULL;
+    ScrollBarHighlight *last = nullptr;
     ScrollBarHighlight *current = _highlights;
 
-    while (current != NULL) {
+    while (current != nullptr) {
         if (func(*current)) {
-            if (last == NULL) {
+            if (last == nullptr) {
                 _highlights = current->next;
             } else {
                 last->next = current->next;
@@ -79,7 +79,7 @@ void ScrollBar::addHighlight(ScrollBarHighlight *highlight)
 {
     _mutex.lock();
 
-    if (_highlights == NULL) {
+    if (_highlights == nullptr) {
         _highlights = highlight;
     } else {
         highlight->next = _highlights->next;
@@ -224,7 +224,7 @@ void ScrollBar::paintEvent(QPaintEvent *)
 
     //    do {
     //        painter.fillRect();
-    //    } while ((highlight = highlight->next()) != NULL);
+    //    } while ((highlight = highlight->next()) != nullptr);
 
     _mutex.unlock();
 }

src/widgets/settingsdialog.cpp

@@ -289,7 +289,7 @@ void SettingsDialog::select(SettingsDialogTab *tab)
 {
     _pageStack.setCurrentWidget(tab->getWidget());
 
-    if (_selectedTab != NULL) {
+    if (_selectedTab != nullptr) {
         _selectedTab->setSelected(false);
         _selectedTab->setStyleSheet("color: #FFF");
     }

src/widgets/settingsdialog.hpp

@@ -42,7 +42,7 @@ private:
 
     void addTabs();
 
-    SettingsDialogTab *_selectedTab = NULL;
+    SettingsDialogTab *_selectedTab = nullptr;
 
     /// Widget creation helpers
     QCheckBox *createCheckbox(const QString &title, Setting<bool> &setting);

src/widgets/textinputdialog.hpp

@@ -15,7 +15,7 @@ class TextInputDialog : public QDialog
     Q_OBJECT
 
 public:
-    TextInputDialog(QWidget *parent = NULL);
+    TextInputDialog(QWidget *parent = nullptr);
 
     QString getText() const
     {