internal: wrap wlr surfaces (#1822)

src/Window.hpp

@@ -8,6 +8,7 @@
 #include <deque>
 #include "config/ConfigDataValues.hpp"
 #include "helpers/Vector2D.hpp"
+#include "helpers/WLSurface.hpp"
 
 enum eIdleInhibitMode
 {
@@ -158,6 +159,9 @@ class CWindow {
     DYNLISTENER(setOverrideRedirect);
     // DYNLISTENER(newSubsurfaceWindow);
 
+    CWLSurface            m_pWLSurface;
+    std::list<CWLSurface> m_lPopupSurfaces;
+
     union {
         wlr_xdg_surface*      xdg;
         wlr_xwayland_surface* xwayland;