#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtWidgets>
#include "mainnotes.h"
#include <QtCore>

typedef QMap<int,MainNotes*> QMapNotes;
Q_DECLARE_METATYPE(QMapNotes)

class MainWindow : public QWidget
{
Q_OBJECT

private:
//QMap<long,MainNotes*> localeforNotes;
QMapNotes localeforNotes;
QMap<long,QString> proxyLocal;

     long idNote;
     QString mainThemeNote;

     QPushButton *createButton;
     QPushButton *deleteButton;
     QPushButton *changeButton;

     QBoxLayout  *buttonLayout;
     QHBoxLayout *horizontalLayout;
     QVBoxLayout *verticalLayout;
     MainNotes *newNote;
     QSplitter *mainNoteSplitter;
     QSettings mainSettings;

     void createButtonClick();
     void deleteButtonClick();
     void changeButtonClick();

public:
explicit MainWindow(QWidget *parent = 0);
virtual ~MainWindow();

     void readSettings();
     void writeSettings();

signals:

public slots:
void deleteNote();
void changeSettings();
void createNote();
void buttonActivate();

};

static QDataStream &operator>>(QDataStream &in, QMapNotes &notes)
{

return in;

}

#endif // MAINWINDOW_H

//////////////////////////////
mainwindow.cpp

////////// In constructor of class

qRegisterMetaType<QMapNotes>("QMapNotes");
qRegisterMetaTypeStreamOperators<QMapNotes>("QMapNotes");

/////////
///// method for saving
void MainWindow::writeSettings()
{

mainSettings.beginGroup("/Settings");

 mainSettings.setValue("/notes",QVariant::fromValue<QMapNotes>(localeforNotes));

mainSettings.endGroup();
}

///method for reading settings

void MainWindow::readSettings()
{
mainSettings.beginGroup("/Settings");

QVariant savingSettings = mainSettings.value("/notes");

localeforNotes = savingSettings.value<QMapNotes>();

QMapNotes::iterator it = localeforNotes.begin();

 while(it != localeforNotes.end())
   {
     mainNoteSplitter->insertWidget(it.key(),it.value());

     it++;
   }

mainSettings.endGroup();

}