Add delay to directory reload

imageringlist.h

@@ -66,6 +66,8 @@ class ImageRingList : public QAbstractItemModel
     Database *m_database;
     QStringList m_nameFilter;
     QTimer *m_slideShowTimer;
+    QTimer *m_dirChangeDelay;
+    QString m_currentDir;
 public:
     explicit ImageRingList(Database *database, const QStringList &nameFilter, QObject *parent = 0);
     ~ImageRingList() override;
@@ -110,6 +112,7 @@ signals:
 protected slots:
     void imageLoaded(Image *image);
     void dirChanged(QString dir);
+    void reloadDir();
 };
 
 #endif // IMAGERINGLIST_H