Items are loaded from default JSON file in standard location at startup. If no items are found in file, example items are generated.

data/filehandler.h

@@ -3,10 +3,12 @@
 
 class QJsonDocument;
 class QString;
+class QByteArray;
 
 class FileHandler {
  public:
   static bool saveToFile(const QJsonDocument& doc, const QString& fileName);
+  static QByteArray loadJSONDataFromFile(const QString fileName);
 
  private:
   explicit FileHandler();