config: add content-type window criteria

src/ifs/wl_surface/x_surface.rs

@@ -26,6 +26,9 @@ impl SurfaceExt for XSurface {
     fn after_apply_commit(self: Rc<Self>) {
         if let Some(xwindow) = self.xwindow.get() {
             xwindow.map_status_changed();
+            xwindow
+                .toplevel_data
+                .set_content_type(self.surface.content_type.get());
         }
     }