diff --git a/src/controllers/MainWindow.cpp b/src/controllers/MainWindow.cpp
index a5175df9..d7c9082d 100644
--- a/src/controllers/MainWindow.cpp
+++ b/src/controllers/MainWindow.cpp
@@ -33,14 +33,8 @@
 #include "controllers/DockWidget_p.h"
 #include "controllers/Frame.h"
 #include "controllers/SideBar.h"
+#include "views/MainWindow.h"
 
-// Or we can have a createDockWidget() in the factory
-#ifdef KDDOCKWIDGETS_QTQUICK
-#include "DockWidgetQuick.h"
-#else
-// TODO: Use framework factory instead
-#include "views_qtwidgets/MainWindow_qtwidgets.h"
-#endif
 
 using namespace KDDockWidgets;
 using namespace KDDockWidgets::Controllers;
@@ -819,24 +813,24 @@ QWidgetOrQuick *MainWindow::persistentCentralWidget() const
 
 void MainWindow::setContentsMargins(int left, int top, int right, int bottom)
 {
-    auto v = qobject_cast<Views::MainWindow_qtwidgets *>(view()->asQWidget());
+    auto v = dynamic_cast<Views::MainWindow *>(view());
     v->setContentsMargins(left, top, right, bottom);
 }
 
 QMargins MainWindow::centerWidgetMargins() const
 {
-    auto v = qobject_cast<Views::MainWindow_qtwidgets *>(view()->asQWidget());
+    auto v = dynamic_cast<Views::MainWindow *>(view());
     return v->centerWidgetMargins();
 }
 
 Controllers::SideBar *MainWindow::sideBar(SideBarLocation loc) const
 {
-    auto v = qobject_cast<Views::MainWindow_qtwidgets *>(view()->asQWidget());
+    auto v = dynamic_cast<Views::MainWindow *>(view());
     return v->sideBar(loc);
 }
 
 QRect MainWindow::centralAreaGeometry() const
 {
-    auto v = qobject_cast<Views::MainWindow_qtwidgets *>(view()->asQWidget());
+    auto v = dynamic_cast<Views::MainWindow *>(view());
     return v->centralAreaGeometry();
 }
diff --git a/src/views/MainWindow.h b/src/views/MainWindow.h
new file mode 100644
index 00000000..9e038d84
--- /dev/null
+++ b/src/views/MainWindow.h
@@ -0,0 +1,39 @@
+/*
+  This file is part of KDDockWidgets.
+
+  SPDX-FileCopyrightText: 2020-2022 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+  Author: Sérgio Martins <sergio.martins@kdab.com>
+
+  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include "KDDockWidgets.h"
+
+class QMargins;
+class QRect;
+
+namespace KDDockWidgets {
+
+namespace Controllers {
+class SideBar;
+}
+
+namespace Views {
+
+/// @brief The interface that MainWindow views should implement
+class MainWindow
+{
+public:
+    virtual QMargins centerWidgetMargins() const = 0;
+    virtual QRect centralAreaGeometry() const = 0;
+    virtual void setContentsMargins(int left, int top, int right, int bottom) = 0;
+    virtual Controllers::SideBar *sideBar(SideBarLocation loc) const = 0;
+};
+
+}
+
+}
diff --git a/src/views_qtwidgets/MainWindow_qtwidgets.cpp b/src/views_qtwidgets/MainWindow_qtwidgets.cpp
index de8ab39b..b76df984 100644
--- a/src/views_qtwidgets/MainWindow_qtwidgets.cpp
+++ b/src/views_qtwidgets/MainWindow_qtwidgets.cpp
@@ -186,3 +186,8 @@ Controllers::MainWindow *MainWindow_qtwidgets::mainWindow() const
 {
     return d->m_controller;
 }
+
+void MainWindow_qtwidgets::setContentsMargins(int left, int top, int right, int bottom)
+{
+    QMainWindow::setContentsMargins(left, top, right, bottom);
+}
diff --git a/src/views_qtwidgets/MainWindow_qtwidgets.h b/src/views_qtwidgets/MainWindow_qtwidgets.h
index 4d250055..d36049e6 100644
--- a/src/views_qtwidgets/MainWindow_qtwidgets.h
+++ b/src/views_qtwidgets/MainWindow_qtwidgets.h
@@ -21,6 +21,7 @@
 
 #include "View_qtwidgets.h"
 #include "controllers/MainWindow.h"
+#include "views/MainWindow.h"
 
 #include <QMainWindow>
 
@@ -37,7 +38,7 @@ namespace Views {
  * @brief The QMainwindow sub-class that the application should use to be able
  * to dock KDDockWidget::DockWidget instances.
  */
-class DOCKS_EXPORT MainWindow_qtwidgets : public View_qtwidgets<QMainWindow>
+class DOCKS_EXPORT MainWindow_qtwidgets : public View_qtwidgets<QMainWindow>, public MainWindow
 {
     Q_OBJECT
 public:
@@ -63,10 +64,10 @@ public:
     ~MainWindow_qtwidgets() override;
 
     ///@brief returns the sidebar for the specified location
-    Controllers::SideBar *sideBar(SideBarLocation) const;
+    Controllers::SideBar *sideBar(SideBarLocation) const override;
 
     //@brief returns the margins for the contents widget
-    QMargins centerWidgetMargins() const;
+    QMargins centerWidgetMargins() const override;
 
     //@brief sets the margins for the contents widgets
     void setCenterWidgetMargins(const QMargins &margins);
@@ -74,12 +75,13 @@ public:
     /// @brief Returns the main window controller
     Controllers::MainWindow *mainWindow() const;
 
+    void setContentsMargins(int left, int top, int right, int bottom) override;
 
     void init() override;
 
 protected:
     void resizeEvent(QResizeEvent *) override;
-    QRect centralAreaGeometry() const;
+    QRect centralAreaGeometry() const override;
 
 private:
     friend class Controllers::MainWindow;