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queueMicrotask added

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This commit is contained in:
Patrick Shaughnessy 2020-01-13 13:15:48 -05:00
parent 968b45f9dc
commit b01b2d3d2e
11 changed files with 42 additions and 75 deletions
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16
components/script/microtask.rs
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@ -9,6 +9,7 @@
use crate::dom::bindings::callback::ExceptionHandling;
use crate::dom::bindings::cell::DomRefCell;
use crate::dom::bindings::codegen::Bindings::PromiseBinding::PromiseJobCallback;
use crate::dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
use crate::dom::bindings::root::DomRoot;
use crate::dom::globalscope::GlobalScope;
use crate::dom::htmlimageelement::ImageElementMicrotask;
@ -34,6 +35,7 @@ pub struct MicrotaskQueue {
#[derive(JSTraceable, MallocSizeOf)]
pub enum Microtask {
Promise(EnqueuedPromiseCallback),
User(UserMicrotask),
MediaElement(MediaElementMicrotask),
ImageElement(ImageElementMicrotask),
CustomElementReaction,
@ -52,6 +54,15 @@ pub struct EnqueuedPromiseCallback {
pub pipeline: PipelineId,
}
/// A microtask that comes from a queueMicrotask() Javascript call,
/// identical to EnqueuedPromiseCallback once it's on the queue
#[derive(JSTraceable, MallocSizeOf)]
pub struct UserMicrotask {
#[ignore_malloc_size_of = "Rc has unclear ownership"]
pub callback: Rc<VoidFunction>,
pub pipeline: PipelineId,
}
impl MicrotaskQueue {
/// Add a new microtask to this queue. It will be invoked as part of the next
/// microtask checkpoint.
@ -95,6 +106,11 @@ impl MicrotaskQueue {
let _ = job.callback.Call_(&*target, ExceptionHandling::Report);
}
},
Microtask::User(ref job) => {
if let Some(target) = target_provider(job.pipeline) {
let _ = job.callback.Call_(&*target, ExceptionHandling::Report);
}
},
Microtask::MediaElement(ref task) => {
task.handler();
},