Remove the "groupViewInMDIResize" property from DockRegistry

Moved it into the QmlHelpers, as it's QtQuick specific.
Allows to remove a asQObject() call.

src/DockRegistry.cpp

@@ -237,14 +237,6 @@ Controllers::Group *DockRegistry::groupInMDIResize() const
     return nullptr;
 }
 
-QObject *DockRegistry::groupViewInMDIResize() const
-{
-    if (auto group = groupInMDIResize())
-        return group->view()->asQObject();
-
-    return nullptr;
-}
-
 Controllers::MainWindow::List DockRegistry::mainWindowsWithAffinity(const QStringList &affinities) const
 {
     Controllers::MainWindow::List result;

src/DockRegistry.h

@@ -48,8 +48,7 @@ struct WindowBeingDragged;
 class DOCKS_EXPORT DockRegistry : public QObject
 {
     Q_OBJECT
-    Q_PROPERTY(
-        QObject *groupViewInMDIResize READ groupViewInMDIResize NOTIFY groupInMDIResizeChanged)
+
 public:
     enum class DockByNameFlag
     {
@@ -230,12 +229,9 @@ public:
     ///@brief Overload that returns the SideBar itself
     Controllers::SideBar *sideBarForDockWidget(const Controllers::DockWidget *) const;
 
-    ///@brief Returns the Frame which is being resized in a MDI layout. nullptr if none
+    ///@brief Returns the Group which is being resized in a MDI layout. nullptr if none
     Controllers::Group *groupInMDIResize() const;
 
-    /// Returns the Frame view, for QtQuick
-    QObject *groupViewInMDIResize() const;
-
 Q_SIGNALS:
     /// @brief emitted when a main window or a floating window change screen
     void windowChangedScreen(std::shared_ptr<Window>);

src/qtquick/Helpers.cpp

@@ -10,13 +10,30 @@
 */
 
 #include "Helpers_p.h"
+#include "DockRegistry.h"
+#include "controllers/Group.h"
+#include "qtcommon/View_qt.h"
 
 #include <QQuickItem>
 
 using namespace KDDockWidgets;
 
+QtQuickHelpers::QtQuickHelpers()
+{
+    connect(DockRegistry::self(), &DockRegistry::groupInMDIResizeChanged,
+            this, &QtQuickHelpers::groupInMDIResizeChanged);
+}
+
 qreal QtQuickHelpers::logicalDpiFactor(const QQuickItem *) const
 {
     return 1; // TODO: Support the actual dpi factor.
     // return KDDockWidgets::logicalDpiFactor(item);
 }
+
+QObject *QtQuickHelpers::groupViewInMDIResize() const
+{
+    if (auto group = DockRegistry::self()->groupInMDIResize())
+        return Views::View_qt::asObject(group->view());
+
+    return nullptr;
+}

src/qtquick/Helpers_p.h

@@ -22,11 +22,21 @@ namespace KDDockWidgets {
 class QtQuickHelpers : public QObject
 {
     Q_OBJECT
+    Q_PROPERTY(
+        QObject *groupViewInMDIResize READ groupViewInMDIResize NOTIFY groupInMDIResizeChanged)
+
+Q_SIGNALS:
+    /// @brief emitted when the MDI group that's being resized changed
+    void groupInMDIResizeChanged();
+
 public:
-    using QObject::QObject;
+    QtQuickHelpers();
 
     Q_INVOKABLE qreal logicalDpiFactor(const QQuickItem *item) const;
+
+    QObject *groupViewInMDIResize() const;
 };
+
 }
 
 #endif

src/qtquick/Platform_qtquick.h

@@ -69,7 +69,7 @@ public:
 private:
     void init();
     QQmlEngine *m_qmlEngine = nullptr;
-    QtQuickHelpers *const m_qquickHelpers;
+    QtQuickHelpers *m_qquickHelpers = nullptr;
 };
 
 inline Platform_qtquick *plat()

src/qtquick/TestHelpers_qtquick.cpp

@@ -57,9 +57,9 @@ TestView_qtquick::~TestView_qtquick() = default;
 
 Platform_qtquick::Platform_qtquick(int &argc, char **argv)
     : Platform_qt(argc, argv)
-    , m_qquickHelpers(new QtQuickHelpers())
 {
     new QGuiApplication(argc, argv);
+    m_qquickHelpers = new QtQuickHelpers();
     init();
 }
 

src/qtquick/views/qml/Group.qml

@@ -26,7 +26,7 @@ Rectangle {
     property bool hasCustomMouseEventRedirector: false
     property int mouseResizeMargin: 8
     readonly property bool isMDI: groupCpp && groupCpp.isMDI
-    readonly property bool resizeAllowed: root.isMDI && !_kddwDragController.isDragging && _kddwDockRegistry && (!_kddwDockRegistry.groupViewInMDIResize || _kddwDockRegistry.groupViewInMDIResize === groupCpp)
+    readonly property bool resizeAllowed: root.isMDI && !_kddwDragController.isDragging && _kddwDockRegistry && (!_kddwHelpers.groupViewInMDIResize || _kddwHelpers.groupViewInMDIResize === groupCpp)
     property alias tabBarHeight: tabbar.height
 
     anchors.fill: parent