Implement CustomEvent (#2173)

1 files changed, 86 insertions, 0 deletions

diff --git a/src/components/script/dom/customevent.rs b/src/components/script/dom/customevent.rs
new file mode 100644
index 00000000000..17b004817f6
--- /dev/null
+++ b/src/components/script/dom/customevent.rs
@@ -0,0 +1,86 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::codegen::BindingDeclarations::CustomEventBinding;
+use dom::bindings::codegen::InheritTypes::{EventCast, CustomEventDerived};
+use dom::bindings::js::{JSRef, Temporary};
+use dom::bindings::error::Fallible;
+use dom::bindings::trace::Traceable;
+use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
+use dom::event::{Event, EventMethods, EventTypeId, CustomEventTypeId};
+use dom::window::Window;
+use js::jsapi::JSContext;
+use js::jsval::{JSVal, NullValue};
+use servo_util::str::DOMString;
+
+#[deriving(Encodable)]
+pub struct CustomEvent {
+    event: Event,
+    detail: Traceable<JSVal>
+}
+
+impl CustomEventDerived for Event {
+    fn is_customevent(&self) -> bool {
+        self.type_id == CustomEventTypeId
+    }
+}
+
+pub trait CustomEventMethods {
+    fn Detail(&self, _cx: *JSContext) -> JSVal;
+    fn InitCustomEvent(&mut self, _cx: *JSContext,
+                       type_: DOMString, can_bubble: bool,
+                       cancelable: bool, detail: JSVal);
+}
+
+impl CustomEvent {
+    pub fn new_inherited(type_id: EventTypeId) -> CustomEvent {
+        CustomEvent {
+            event: Event::new_inherited(type_id),
+            detail: Traceable::new(NullValue())
+        }
+    }
+
+    pub fn new_uninitialized(window: &JSRef<Window>) -> Temporary<CustomEvent> {
+        reflect_dom_object(box CustomEvent::new_inherited(CustomEventTypeId),
+                           window,
+                           CustomEventBinding::Wrap)
+    }
+    pub fn new(window: &JSRef<Window>, type_: DOMString, bubbles: bool, cancelable: bool, detail: JSVal) -> Temporary<CustomEvent> {
+        let mut ev = CustomEvent::new_uninitialized(window).root();
+        ev.InitCustomEvent(window.deref().get_cx(), type_, bubbles, cancelable, detail);
+        Temporary::from_rooted(&*ev)
+    }
+    pub fn Constructor(owner: &JSRef<Window>,
+                       type_: DOMString,
+                       init: &CustomEventBinding::CustomEventInit) -> Fallible<Temporary<CustomEvent>>{
+        Ok(CustomEvent::new(owner, type_, init.parent.bubbles, init.parent.cancelable, init.detail))
+    }
+}
+
+impl<'a> CustomEventMethods for JSRef<'a, CustomEvent> {
+    fn Detail(&self, _cx: *JSContext) -> JSVal {
+        self.detail.deref().clone()
+    }
+
+    fn InitCustomEvent(&mut self,
+                        _cx: *JSContext,
+                       type_: DOMString,
+                       can_bubble: bool,
+                       cancelable: bool,
+                       detail: JSVal) {
+        self.detail = Traceable::new(detail);
+        let event: &mut JSRef<Event> = EventCast::from_mut_ref(self);
+        event.InitEvent(type_, can_bubble, cancelable);
+    }
+}
+
+impl Reflectable for CustomEvent {
+    fn reflector<'a>(&'a self) -> &'a Reflector {
+        self.event.reflector()
+    }
+
+    fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector {
+        self.event.mut_reflector()
+    }
+}