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https://github.com/servo/servo.git
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4accaf50b2
`Event` internally stores the `type` as an `Atom`, and we're `String`s everywhere, which can cause unnecessary allocations to occur since they'll end up as `Atom`s anyways.
103 lines
3.7 KiB
Rust
103 lines
3.7 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::EventBinding::EventMethods;
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use dom::bindings::codegen::Bindings::MessageEventBinding;
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use dom::bindings::codegen::Bindings::MessageEventBinding::MessageEventMethods;
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use dom::bindings::error::Fallible;
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use dom::bindings::global::GlobalRef;
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::Root;
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use dom::bindings::reflector::reflect_dom_object;
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use dom::event::Event;
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use dom::eventtarget::EventTarget;
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use js::jsapi::{RootedValue, HandleValue, Heap, JSContext};
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use js::jsval::JSVal;
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use std::default::Default;
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use string_cache::Atom;
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use util::str::DOMString;
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#[dom_struct]
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pub struct MessageEvent {
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event: Event,
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data: Heap<JSVal>,
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origin: DOMString,
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lastEventId: DOMString,
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}
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impl MessageEvent {
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pub fn new_uninitialized(global: GlobalRef) -> Root<MessageEvent> {
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MessageEvent::new_initialized(global,
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HandleValue::undefined(),
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DOMString::new(),
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DOMString::new())
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}
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pub fn new_initialized(global: GlobalRef,
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data: HandleValue,
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origin: DOMString,
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lastEventId: DOMString) -> Root<MessageEvent> {
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let mut ev = box MessageEvent {
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event: Event::new_inherited(),
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data: Heap::default(),
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origin: origin,
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lastEventId: lastEventId,
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};
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ev.data.set(data.get());
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reflect_dom_object(ev, global, MessageEventBinding::Wrap)
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}
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pub fn new(global: GlobalRef, type_: Atom,
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bubbles: bool, cancelable: bool,
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data: HandleValue, origin: DOMString, lastEventId: DOMString)
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-> Root<MessageEvent> {
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let ev = MessageEvent::new_initialized(global, data, origin, lastEventId);
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{
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let event = ev.upcast::<Event>();
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event.init_event(type_, bubbles, cancelable);
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}
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ev
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}
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pub fn Constructor(global: GlobalRef,
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type_: DOMString,
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init: &MessageEventBinding::MessageEventInit)
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-> Fallible<Root<MessageEvent>> {
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// Dictionaries need to be rooted
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// https://github.com/servo/servo/issues/6381
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let data = RootedValue::new(global.get_cx(), init.data);
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let ev = MessageEvent::new(global, Atom::from(&*type_), init.parent.bubbles, init.parent.cancelable,
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data.handle(),
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init.origin.clone(), init.lastEventId.clone());
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Ok(ev)
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}
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}
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impl MessageEvent {
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pub fn dispatch_jsval(target: &EventTarget,
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scope: GlobalRef,
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message: HandleValue) {
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let messageevent = MessageEvent::new(
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scope, atom!("message"), false, false, message,
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DOMString::new(), DOMString::new());
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messageevent.upcast::<Event>().fire(target);
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}
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}
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impl MessageEventMethods for MessageEvent {
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// https://html.spec.whatwg.org/multipage/#dom-messageevent-data
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fn Data(&self, _cx: *mut JSContext) -> JSVal {
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self.data.get()
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}
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// https://html.spec.whatwg.org/multipage/#dom-messageevent-origin
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fn Origin(&self) -> DOMString {
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self.origin.clone()
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}
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// https://html.spec.whatwg.org/multipage/#dom-messageevent-lasteventid
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fn LastEventId(&self) -> DOMString {
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self.lastEventId.clone()
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}
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}
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