Implement transientFor in ShellClient

shell_client.cpp

@@ -101,6 +101,9 @@ ShellClient::ShellClient(ShellSurfaceInterface *surface)
             setResourceClass(m_shellSurface->windowClass());
         }
     );
+
+    setTransient();
+    connect(surface, &ShellSurfaceInterface::transientForChanged, this, &ShellClient::setTransient);
 }
 
 ShellClient::~ShellClient() = default;
@@ -712,4 +715,15 @@ void ShellClient::updateIcon()
     setIcon(QIcon::fromTheme(df.readIcon()));
 }
 
+bool ShellClient::isTransient() const
+{
+    return m_shellSurface->isTransient();
+}
+
+void ShellClient::setTransient()
+{
+    const auto s = m_shellSurface->transientFor();
+    setTransientFor(waylandServer()->findClient(s.data()));
+}
+
 }

shell_client.h

@@ -111,6 +111,8 @@ public:
 
     bool isInitialPositionSet() const;
 
+    bool isTransient() const override;
+
 protected:
     void addDamage(const QRegion &damage) override;
     bool belongsToSameApplication(const AbstractClient *other, bool active_hack) const override;
@@ -129,6 +131,7 @@ private:
     void updateInternalWindowGeometry();
     void updateIcon();
     void markAsMapped();
+    void setTransient();
     static void deleteClient(ShellClient *c);
 
     KWayland::Server::ShellSurfaceInterface *m_shellSurface;