Avoid accessing node global during Node's destructor.

1 files changed, 17 insertions, 0 deletions

diff --git a/components/script/script_thread.rs b/components/script/script_thread.rs
index 118b4b4f653..dd0f798fcec 100644
--- a/components/script/script_thread.rs
+++ b/components/script/script_thread.rs
@@ -821,6 +821,23 @@ impl ScriptThreadFactory for ScriptThread {
 }
 
 impl ScriptThread {
+    pub(crate) fn get_any_layout_chan() -> Option<Sender<Msg>> {
+        SCRIPT_THREAD_ROOT.with(|root| {
+            let script_thread = match root.get() {
+                Some(s) => unsafe { &*s },
+                None => return None,
+            };
+            script_thread
+                .documents
+                .borrow()
+                .map
+                .values()
+                .next()
+                .map(|d| d.window().layout_chan())
+                .cloned()
+        })
+    }
+
     pub fn runtime_handle() -> ParentRuntime {
         SCRIPT_THREAD_ROOT.with(|root| {
             let script_thread = unsafe { &*root.get().unwrap() };