script: implement AbortController (#31361)

* Implement AbortController

Signed-off-by: syvb <me@iter.ca>

* Update WPT tests

Signed-off-by: syvb <me@iter.ca>

* Address review comments

* Fix duplicate import generation

* Update WPT test expectations

* Change expectation to FAIL for flaky test

---------

Signed-off-by: syvb <me@iter.ca>

1 files changed, 59 insertions, 0 deletions

diff --git a/components/script/dom/abortcontroller.rs b/components/script/dom/abortcontroller.rs
new file mode 100644
index 00000000000..beaeaece49f
--- /dev/null
+++ b/components/script/dom/abortcontroller.rs
@@ -0,0 +1,59 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use dom_struct::dom_struct;
+use js::jsapi::Value;
+use js::rust::{Handle, HandleObject};
+
+use crate::dom::abortsignal::AbortSignal;
+use crate::dom::bindings::codegen::Bindings::AbortControllerBinding::AbortControllerMethods;
+use crate::dom::bindings::reflector::{reflect_dom_object_with_proto, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::globalscope::GlobalScope;
+use crate::script_runtime::JSContext;
+
+#[dom_struct]
+pub struct AbortController {
+    reflector_: Reflector,
+    signal: Dom<AbortSignal>,
+}
+
+impl AbortController {
+    pub fn new_inherited(signal: &AbortSignal) -> AbortController {
+        AbortController {
+            reflector_: Reflector::new(),
+            signal: Dom::from_ref(signal),
+        }
+    }
+
+    fn new_with_proto(
+        global: &GlobalScope,
+        proto: Option<HandleObject>,
+    ) -> DomRoot<AbortController> {
+        reflect_dom_object_with_proto(
+            Box::new(AbortController::new_inherited(&AbortSignal::new(global))),
+            global,
+            proto,
+        )
+    }
+
+    #[allow(non_snake_case)]
+    pub fn Constructor(
+        global: &GlobalScope,
+        proto: Option<HandleObject>,
+    ) -> DomRoot<AbortController> {
+        AbortController::new_with_proto(global, proto)
+    }
+}
+
+impl AbortControllerMethods for AbortController {
+    /// <https://dom.spec.whatwg.org/#dom-abortcontroller-signal>
+    fn Signal(&self) -> DomRoot<AbortSignal> {
+        DomRoot::from_ref(&self.signal)
+    }
+    /// <https://dom.spec.whatwg.org/#dom-abortcontroller-abort>
+    fn Abort(&self, _cx: JSContext, reason: Handle<'_, Value>) {
+        self.signal.signal_abort(reason);
+    }
+}