Add explicit

src/dialogs/about.h

@@ -37,7 +37,7 @@ class About : public QDialog {
   Q_OBJECT
 
  public:
-  About(QWidget *parent = nullptr);
+  explicit About(QWidget *parent = nullptr);
 
   struct Person {
     Person(const QString &n, const QString &e = QString()) : name(n), email(e) {}

src/dialogs/console.h

@@ -34,8 +34,9 @@ class Application;
 
 class Console : public QDialog {
   Q_OBJECT
+
  public:
-  Console(Application *app, QWidget *parent = nullptr);
+  explicit Console(Application *app, QWidget *parent = nullptr);
 
  private slots:
   void RunQuery();

src/dialogs/edittagdialog.h

@@ -60,7 +60,7 @@ class EditTagDialog : public QDialog {
   Q_OBJECT
 
  public:
-  EditTagDialog(Application *app, QWidget *parent = nullptr);
+  explicit EditTagDialog(Application *app, QWidget *parent = nullptr);
   ~EditTagDialog();
 
   static const char *kHintText;

src/dialogs/errordialog.h

@@ -36,7 +36,7 @@ class ErrorDialog : public QDialog {
   Q_OBJECT
 
  public:
-  ErrorDialog(QWidget *parent = nullptr);
+  explicit ErrorDialog(QWidget *parent = nullptr);
   ~ErrorDialog();
 
 public slots:

src/dialogs/trackselectiondialog.h

@@ -38,7 +38,7 @@ class TrackSelectionDialog : public QDialog {
   Q_OBJECT
 
  public:
-  TrackSelectionDialog(QWidget *parent = nullptr);
+  explicit TrackSelectionDialog(QWidget *parent = nullptr);
   ~TrackSelectionDialog();
 
   void set_save_on_close(bool save_on_close) { save_on_close_ = save_on_close; }