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Clean up of script timer code.

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The code was split into the following two abstractions.
 - OneshotTimers can be used to schedule arbitrary oneshot timers, such
   as XHR-Timeouts.
 - JsTimers (`setTimeout` and `setInterval`) which use OneshotTimers to
   schedule individual callbacks.

With this change the implementation (of JsTimers in particular) is in
much closer alignment with the specification.
This commit is contained in:
benshu 2015-11-19 07:57:04 +01:00
parent 581aa1a14f
commit f2d4a7bbca
5 changed files with 371 additions and 277 deletions
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24
components/script/dom/window.rs
View file

@ -76,7 +76,7 @@ use style::context::ReflowGoal;
use style::error_reporting::ParseErrorReporter;
use style::selector_impl::PseudoElement;
use time;
use timers::{ActiveTimers, IsInterval, ScheduledCallback, TimerCallback, TimerHandle};
use timers::{IsInterval, OneshotTimerCallback, OneshotTimerHandle, OneshotTimers, TimerCallback};
use url::Url;
use util::geometry::{self, MAX_RECT};
use util::str::{DOMString, HTML_SPACE_CHARACTERS};
@ -149,7 +149,7 @@ pub struct Window {
local_storage: MutNullableHeap<JS<Storage>>,
#[ignore_heap_size_of = "channels are hard"]
scheduler_chan: IpcSender<TimerEventRequest>,
timers: ActiveTimers,
timers: OneshotTimers,
next_worker_id: Cell<WorkerId>,
@ -466,7 +466,8 @@ impl WindowMethods for Window {
// https://html.spec.whatwg.org/multipage/#dom-windowtimers-settimeout
fn SetTimeout(&self, _cx: *mut JSContext, callback: Rc<Function>, timeout: i32, args: Vec<HandleValue>) -> i32 {
self.timers.set_timeout_or_interval(TimerCallback::FunctionTimerCallback(callback),
self.timers.set_timeout_or_interval(GlobalRef::Window(self),
TimerCallback::FunctionTimerCallback(callback),
args,
timeout,
IsInterval::NonInterval,
@ -475,7 +476,8 @@ impl WindowMethods for Window {
// https://html.spec.whatwg.org/multipage/#dom-windowtimers-settimeout
fn SetTimeout_(&self, _cx: *mut JSContext, callback: DOMString, timeout: i32, args: Vec<HandleValue>) -> i32 {
self.timers.set_timeout_or_interval(TimerCallback::StringTimerCallback(callback),
self.timers.set_timeout_or_interval(GlobalRef::Window(self),
TimerCallback::StringTimerCallback(callback),
args,
timeout,
IsInterval::NonInterval,
@ -484,12 +486,13 @@ impl WindowMethods for Window {
// https://html.spec.whatwg.org/multipage/#dom-windowtimers-cleartimeout
fn ClearTimeout(&self, handle: i32) {
self.timers.clear_timeout_or_interval(handle);
self.timers.clear_timeout_or_interval(GlobalRef::Window(self), handle);
}
// https://html.spec.whatwg.org/multipage/#dom-windowtimers-setinterval
fn SetInterval(&self, _cx: *mut JSContext, callback: Rc<Function>, timeout: i32, args: Vec<HandleValue>) -> i32 {
self.timers.set_timeout_or_interval(TimerCallback::FunctionTimerCallback(callback),
self.timers.set_timeout_or_interval(GlobalRef::Window(self),
TimerCallback::FunctionTimerCallback(callback),
args,
timeout,
IsInterval::Interval,
@ -498,7 +501,8 @@ impl WindowMethods for Window {
// https://html.spec.whatwg.org/multipage/#dom-windowtimers-setinterval
fn SetInterval_(&self, _cx: *mut JSContext, callback: DOMString, timeout: i32, args: Vec<HandleValue>) -> i32 {
self.timers.set_timeout_or_interval(TimerCallback::StringTimerCallback(callback),
self.timers.set_timeout_or_interval(GlobalRef::Window(self),
TimerCallback::StringTimerCallback(callback),
args,
timeout,
IsInterval::Interval,
@ -1155,13 +1159,13 @@ impl Window {
self.scheduler_chan.clone()
}
pub fn schedule_callback(&self, callback: Box<ScheduledCallback>, duration: MsDuration) -> TimerHandle {
pub fn schedule_callback(&self, callback: OneshotTimerCallback, duration: MsDuration) -> OneshotTimerHandle {
self.timers.schedule_callback(callback,
duration,
TimerSource::FromWindow(self.id.clone()))
}
pub fn unschedule_callback(&self, handle: TimerHandle) {
pub fn unschedule_callback(&self, handle: OneshotTimerHandle) {
self.timers.unschedule_callback(handle);
}
@ -1349,7 +1353,7 @@ impl Window {
session_storage: Default::default(),
local_storage: Default::default(),
scheduler_chan: scheduler_chan.clone(),
timers: ActiveTimers::new(timer_event_chan, scheduler_chan),
timers: OneshotTimers::new(timer_event_chan, scheduler_chan),
next_worker_id: Cell::new(WorkerId(0)),
id: id,
parent_info: parent_info,