mainwindow.h Example File

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  #ifndef MAINWINDOW_H
  #define MAINWINDOW_H

  #include "ui_mainwindow.h"
  #include "ui_cookiewidget.h"
  #include "ui_cookiedialog.h"
  #include <QNetworkCookie>
  #include <QMainWindow>

  class QWebEngineCookieStore;

  class CookieDialog : public QDialog, public Ui_CookieDialog
  {
      Q_OBJECT
  public:
      CookieDialog(const QNetworkCookie &cookie, QWidget *parent = nullptr);
      CookieDialog(QWidget *parent = 0);
      QNetworkCookie cookie();
  };

  class CookieWidget : public QWidget,  public Ui_CookieWidget
  {
      Q_OBJECT
  public:
      CookieWidget(const QNetworkCookie &cookie, QWidget *parent = nullptr);
      void setHighlighted(bool enabled);
  signals:
      void deleteClicked();
      void viewClicked();
  };

  class MainWindow : public QMainWindow, public Ui_MainWindow
  {
      Q_OBJECT
  public:
      explicit MainWindow(const QUrl &url);

  private:
      bool containsCookie(const QNetworkCookie &cookie);

  private slots:
      void handleCookieAdded(const QNetworkCookie &cookie);
      void handleDeleteAllClicked();
      void handleNewClicked();
      void handleUrlClicked();

  private:
      QWebEngineCookieStore *m_store;
      QVector<QNetworkCookie> m_cookies;
      QVBoxLayout *m_layout;
  };

  #endif // MAINWINDOW_H