servo/components/script/dom/progressevent.rs
Corey Farwell 4accaf50b2 Pass around event types as Atoms instead of Strings
`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.
2015-12-10 23:47:25 -05:00

74 lines
2.8 KiB
Rust

/* 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::Bindings::EventBinding::EventMethods;
use dom::bindings::codegen::Bindings::ProgressEventBinding;
use dom::bindings::codegen::Bindings::ProgressEventBinding::ProgressEventMethods;
use dom::bindings::error::Fallible;
use dom::bindings::global::GlobalRef;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::Root;
use dom::bindings::reflector::reflect_dom_object;
use dom::event::{Event, EventBubbles, EventCancelable};
use string_cache::Atom;
use util::str::DOMString;
#[dom_struct]
pub struct ProgressEvent {
event: Event,
length_computable: bool,
loaded: u64,
total: u64
}
impl ProgressEvent {
fn new_inherited(length_computable: bool, loaded: u64, total: u64) -> ProgressEvent {
ProgressEvent {
event: Event::new_inherited(),
length_computable: length_computable,
loaded: loaded,
total: total
}
}
pub fn new(global: GlobalRef, type_: Atom,
can_bubble: EventBubbles, cancelable: EventCancelable,
length_computable: bool, loaded: u64, total: u64) -> Root<ProgressEvent> {
let ev = reflect_dom_object(box ProgressEvent::new_inherited(length_computable, loaded, total),
global,
ProgressEventBinding::Wrap);
{
let event = ev.upcast::<Event>();
event.init_event(type_, can_bubble == EventBubbles::Bubbles, cancelable == EventCancelable::Cancelable);
}
ev
}
pub fn Constructor(global: GlobalRef,
type_: DOMString,
init: &ProgressEventBinding::ProgressEventInit)
-> Fallible<Root<ProgressEvent>> {
let bubbles = if init.parent.bubbles { EventBubbles::Bubbles } else { EventBubbles::DoesNotBubble };
let cancelable = if init.parent.cancelable { EventCancelable::Cancelable }
else { EventCancelable::NotCancelable };
let ev = ProgressEvent::new(global, Atom::from(&*type_), bubbles, cancelable,
init.lengthComputable, init.loaded, init.total);
Ok(ev)
}
}
impl ProgressEventMethods for ProgressEvent {
// https://xhr.spec.whatwg.org/#dom-progressevent-lengthcomputable
fn LengthComputable(&self) -> bool {
self.length_computable
}
// https://xhr.spec.whatwg.org/#dom-progressevent-loaded
fn Loaded(&self) -> u64 {
self.loaded
}
// https://xhr.spec.whatwg.org/#dom-progressevent-total
fn Total(&self) -> u64 {
self.total
}
}