Implement unhandledrejection event

1 files changed, 10 insertions, 4 deletions

diff --git a/components/script/microtask.rs b/components/script/microtask.rs
index a4221dd92dc..1a707d8fc3f 100644
--- a/components/script/microtask.rs
+++ b/components/script/microtask.rs
@@ -15,6 +15,7 @@ use dom::htmlimageelement::ImageElementMicrotask;
 use dom::htmlmediaelement::MediaElementMicrotask;
 use dom::mutationobserver::MutationObserver;
 use msg::constellation_msg::PipelineId;
+use script_runtime::notify_about_rejected_promises;
 use script_thread::ScriptThread;
 use std::cell::Cell;
 use std::mem;
@@ -59,7 +60,7 @@ impl MicrotaskQueue {
 
     /// <https://html.spec.whatwg.org/multipage/#perform-a-microtask-checkpoint>
     /// Perform a microtask checkpoint, executing all queued microtasks until the queue is empty.
-    pub fn checkpoint<F>(&self, target_provider: F)
+    pub fn checkpoint<F>(&self, target_provider: F, globalscopes: Vec<DomRoot<GlobalScope>>)
     where
         F: Fn(PipelineId) -> Option<DomRoot<GlobalScope>>,
     {
@@ -70,7 +71,7 @@ impl MicrotaskQueue {
         // Step 1
         self.performing_a_microtask_checkpoint.set(true);
 
-        // Steps 2-7
+        // Steps 2
         while !self.microtask_queue.borrow().is_empty() {
             rooted_vec!(let mut pending_queue);
             mem::swap(&mut *pending_queue, &mut *self.microtask_queue.borrow_mut());
@@ -98,9 +99,14 @@ impl MicrotaskQueue {
             }
         }
 
-        //TODO: Step 8 - notify about rejected promises
+        // Step 3
+        for global in globalscopes.into_iter() {
+            notify_about_rejected_promises(&global);
+        }
+
+        // TODO: Step 4 - Cleanup Indexed Database transactions.
 
-        // Step 9
+        // Step 5
         self.performing_a_microtask_checkpoint.set(false);
     }
 }