Implement EventTarget constructor

Resolves #19283

components/script/dom/eventtarget.rs

@@ -15,18 +15,20 @@ use dom::bindings::codegen::Bindings::EventListenerBinding::EventListener;
 use dom::bindings::codegen::Bindings::EventTargetBinding::AddEventListenerOptions;
 use dom::bindings::codegen::Bindings::EventTargetBinding::EventListenerOptions;
 use dom::bindings::codegen::Bindings::EventTargetBinding::EventTargetMethods;
+use dom::bindings::codegen::Bindings::EventTargetBinding::Wrap;
 use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use dom::bindings::codegen::UnionTypes::AddEventListenerOptionsOrBoolean;
 use dom::bindings::codegen::UnionTypes::EventListenerOptionsOrBoolean;
 use dom::bindings::codegen::UnionTypes::EventOrString;
 use dom::bindings::error::{Error, Fallible, report_pending_exception};
 use dom::bindings::inheritance::Castable;
-use dom::bindings::reflector::{DomObject, Reflector};
+use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
 use dom::bindings::root::DomRoot;
 use dom::bindings::str::DOMString;
 use dom::element::Element;
 use dom::errorevent::ErrorEvent;
 use dom::event::{Event, EventBubbles, EventCancelable, EventStatus};
+use dom::globalscope::GlobalScope;
 use dom::node::document_from_node;
 use dom::virtualmethods::VirtualMethods;
 use dom::window::Window;
@@ -291,6 +293,16 @@ impl EventTarget {
         }
     }
 
+    fn new(global: &GlobalScope) -> DomRoot<EventTarget> {
+        reflect_dom_object(Box::new(EventTarget::new_inherited()),
+                           global,
+                           Wrap)
+    }
+
+    pub fn Constructor(global: &GlobalScope) -> Fallible<DomRoot<EventTarget>> {
+        Ok(EventTarget::new(global))
+    }
+
     pub fn get_listeners_for(&self,
                              type_: &Atom,
                              specific_phase: Option<ListenerPhase>)

components/script/dom/webidls/EventTarget.webidl

@@ -5,7 +5,7 @@
  * https://dom.spec.whatwg.org/#interface-eventtarget
  */
 
-[Abstract, Exposed=(Window,Worker,Worklet)]
+[Constructor, Exposed=(Window,Worker,Worklet)]
 interface EventTarget {
   void addEventListener(
     DOMString type,

tests/wpt/metadata/dom/events/EventTarget-constructible.any.js.ini

@@ -1,17 +1,11 @@
 [EventTarget-constructible.any.worker.html]
   type: testharness
-  [A constructed EventTarget can be used as expected]
-    expected: FAIL
-
   [EventTarget can be subclassed]
     expected: FAIL
 
 
 [EventTarget-constructible.any.html]
   type: testharness
-  [A constructed EventTarget can be used as expected]
-    expected: FAIL
-
   [EventTarget can be subclassed]
     expected: FAIL
 

tests/wpt/metadata/dom/interfaces.html.ini

@@ -354,15 +354,9 @@
   [EventTarget interface: document.querySelector("[id\]").attributes[0\] must inherit property "addEventListener" with the proper type (0)]
     expected: FAIL
 
-  [EventTarget interface: calling addEventListener(DOMString,EventListener,[object Object\],[object Object\]) on document.querySelector("[id\]").attributes[0\] with too few arguments must throw TypeError]
-    expected: FAIL
-
   [EventTarget interface: document.querySelector("[id\]").attributes[0\] must inherit property "removeEventListener" with the proper type (1)]
     expected: FAIL
 
-  [EventTarget interface: calling removeEventListener(DOMString,EventListener,[object Object\],[object Object\]) on document.querySelector("[id\]").attributes[0\] with too few arguments must throw TypeError]
-    expected: FAIL
-
   [EventTarget interface: document.querySelector("[id\]").attributes[0\] must inherit property "dispatchEvent" with the proper type (2)]
     expected: FAIL
 
@@ -486,30 +480,6 @@
   [CustomEvent interface: operation initCustomEvent(DOMString, boolean, boolean, any)]
     expected: FAIL
 
-  [EventTarget must be primary interface of new EventTarget()]
-    expected: FAIL
-
-  [Stringification of new EventTarget()]
-    expected: FAIL
-
-  [EventTarget interface: new EventTarget() must inherit property "addEventListener(DOMString, EventListener, [object Object\],[object Object\])" with the proper type]
-    expected: FAIL
-
-  [EventTarget interface: calling addEventListener(DOMString, EventListener, [object Object\],[object Object\]) on new EventTarget() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [EventTarget interface: new EventTarget() must inherit property "removeEventListener(DOMString, EventListener, [object Object\],[object Object\])" with the proper type]
-    expected: FAIL
-
-  [EventTarget interface: calling removeEventListener(DOMString, EventListener, [object Object\],[object Object\]) on new EventTarget() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [EventTarget interface: new EventTarget() must inherit property "dispatchEvent(Event)" with the proper type]
-    expected: FAIL
-
-  [EventTarget interface: calling dispatchEvent(Event) on new EventTarget() with too few arguments must throw TypeError]
-    expected: FAIL
-
   [AbortController interface: existence and properties of interface object]
     expected: FAIL