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b2eda71952
This is a simplification of the internal `TaskQueue` API that moves the `TaskManager` to the `GlobalScope` itself. In addition, the handling of cancellers is moved to the `TaskManager` as well. This means that no arguments other than the `task` are necessary for queueing tasks, which makes the API a lot easier to use and cleaner. `TaskSource` now also keeps a copy of the canceller with it, so that they always know the proper way to cancel any tasks queued on them. There is one complication here. The event loop `sender` for dedicated workers is constantly changing as it is set to `None` when not handling messages. This is because this sender keeps a handle to the main thread's `Worker` object, preventing garbage collection while any messages are still in flight or being handled. This change allows setting the `sender` on the `TaskManager` to `None` to allow proper garbabge collection. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
99 lines
3.2 KiB
Rust
99 lines
3.2 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 https://mozilla.org/MPL/2.0/. */
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use std::cell::Cell;
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use dom_struct::dom_struct;
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use html5ever::{local_name, LocalName, Prefix};
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use js::rust::HandleObject;
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use crate::dom::attr::Attr;
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use crate::dom::bindings::codegen::Bindings::HTMLDetailsElementBinding::HTMLDetailsElementMethods;
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use crate::dom::bindings::inheritance::Castable;
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use crate::dom::bindings::refcounted::Trusted;
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::document::Document;
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use crate::dom::element::AttributeMutation;
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use crate::dom::eventtarget::EventTarget;
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use crate::dom::htmlelement::HTMLElement;
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use crate::dom::node::{Node, NodeDamage, NodeTraits};
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use crate::dom::virtualmethods::VirtualMethods;
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use crate::script_runtime::CanGc;
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#[dom_struct]
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pub struct HTMLDetailsElement {
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htmlelement: HTMLElement,
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toggle_counter: Cell<u32>,
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}
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impl HTMLDetailsElement {
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fn new_inherited(
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local_name: LocalName,
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prefix: Option<Prefix>,
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document: &Document,
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) -> HTMLDetailsElement {
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HTMLDetailsElement {
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htmlelement: HTMLElement::new_inherited(local_name, prefix, document),
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toggle_counter: Cell::new(0),
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}
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}
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#[allow(crown::unrooted_must_root)]
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pub fn new(
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local_name: LocalName,
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prefix: Option<Prefix>,
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document: &Document,
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proto: Option<HandleObject>,
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can_gc: CanGc,
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) -> DomRoot<HTMLDetailsElement> {
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Node::reflect_node_with_proto(
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Box::new(HTMLDetailsElement::new_inherited(
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local_name, prefix, document,
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)),
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document,
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proto,
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can_gc,
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)
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}
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pub fn toggle(&self) {
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self.SetOpen(!self.Open());
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}
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}
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impl HTMLDetailsElementMethods<crate::DomTypeHolder> for HTMLDetailsElement {
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// https://html.spec.whatwg.org/multipage/#dom-details-open
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make_bool_getter!(Open, "open");
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// https://html.spec.whatwg.org/multipage/#dom-details-open
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make_bool_setter!(SetOpen, "open");
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}
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impl VirtualMethods for HTMLDetailsElement {
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fn super_type(&self) -> Option<&dyn VirtualMethods> {
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Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
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}
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fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation) {
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self.super_type().unwrap().attribute_mutated(attr, mutation);
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if attr.local_name() == &local_name!("open") {
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let counter = self.toggle_counter.get() + 1;
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self.toggle_counter.set(counter);
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let window = self.owner_window();
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let this = Trusted::new(self);
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// FIXME(nox): Why are errors silenced here?
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let _ = window.task_manager().dom_manipulation_task_source().queue(
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task!(details_notification_task_steps: move || {
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let this = this.root();
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if counter == this.toggle_counter.get() {
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this.upcast::<EventTarget>().fire_event(atom!("toggle"), CanGc::note());
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}
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}),
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);
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self.upcast::<Node>().dirty(NodeDamage::OtherNodeDamage)
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}
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}
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}
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