Set associated window for tray icon

src/trayicon_sni.cpp

@@ -4,6 +4,8 @@
 #include "trayicon_sni.h"
 #include <KWindowSystem>
 
+#include "windowcontroller.h"
+
 TrayIcon::TrayIcon(QObject *parent)
     : KStatusNotifierItem(parent)
 {
@@ -13,6 +15,12 @@ TrayIcon::TrayIcon(QObject *parent)
         KWindowSystem::setCurrentXdgActivationToken(providedToken());
         Q_EMIT showWindow();
     });
+
+    connect(&WindowController::instance(), &WindowController::windowChanged, this, [this] {
+#if QT_VERSION > QT_VERSION_CHECK(6, 0, 0)
+        setAssociatedWindow(WindowController::instance().window());
+#endif
+    });
 }
 
 void TrayIcon::show()

src/windowcontroller.cpp

@@ -24,6 +24,13 @@ WindowController &WindowController::instance()
 void WindowController::setWindow(QWindow *window)
 {
     m_window = window;
+
+    Q_EMIT windowChanged();
+}
+
+QWindow *WindowController::window() const
+{
+    return m_window;
 }
 
 void WindowController::restoreGeometry()

src/windowcontroller.h

@@ -14,11 +14,15 @@ public:
     static WindowController &instance();
 
     void setWindow(QWindow *window);
+    QWindow *window() const;
 
     void restoreGeometry();
     void saveGeometry();
     void showAndRaiseWindow(const QString &startupId);
 
+Q_SIGNALS:
+    void windowChanged();
+
 private:
     WindowController() = default;