First bits of shadow dom layout

1 files changed, 14 insertions, 1 deletions

diff --git a/components/script/dom/shadowroot.rs b/components/script/dom/shadowroot.rs
index e64401ab494..55470a9935d 100644
--- a/components/script/dom/shadowroot.rs
+++ b/components/script/dom/shadowroot.rs
@@ -7,7 +7,7 @@ use crate::dom::bindings::codegen::Bindings::ShadowRootBinding::{self, ShadowRoo
 use crate::dom::bindings::inheritance::Castable;
 use crate::dom::bindings::num::Finite;
 use crate::dom::bindings::reflector::reflect_dom_object;
-use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
+use crate::dom::bindings::root::{Dom, DomRoot, LayoutDom, MutNullableDom};
 use crate::dom::cssstylesheet::CSSStyleSheet;
 use crate::dom::document::Document;
 use crate::dom::documentfragment::DocumentFragment;
@@ -121,3 +121,16 @@ impl ShadowRootMethods for ShadowRoot {
         })
     }
 }
+
+#[allow(unsafe_code)]
+pub trait LayoutShadowRootHelpers {
+    unsafe fn get_host_for_layout(&self) -> LayoutDom<Element>;
+}
+
+impl LayoutShadowRootHelpers for LayoutDom<ShadowRoot> {
+    #[inline]
+    #[allow(unsafe_code)]
+    unsafe fn get_host_for_layout(&self) -> LayoutDom<Element> {
+        (*self.unsafe_get()).host.to_layout()
+    }
+}