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Add upgrade reaction

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This commit is contained in:
Connor Brewster 2017-07-19 13:10:54 -06:00
parent ec528e944a
commit e83a0045f9
3 changed files with 28 additions and 3 deletions
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14
components/script/dom/customelementregistry.rs
View file

@ -531,7 +531,10 @@ pub fn try_upgrade_element(element: &Element) {
#[derive(HeapSizeOf, JSTraceable)]
#[must_root]
pub enum CustomElementReaction {
// TODO: Support upgrade reactions
Upgrade(
#[ignore_heap_size_of = "Rc"]
Rc<CustomElementDefinition>
),
Callback(
#[ignore_heap_size_of = "Rc"]
Rc<Function>,
@ -545,6 +548,7 @@ impl CustomElementReaction {
pub fn invoke(&self, element: &Element) {
// Step 2.1
match *self {
CustomElementReaction::Upgrade(ref definition) => upgrade_element(definition.clone(), element),
CustomElementReaction::Callback(ref callback, ref arguments) => {
let arguments = arguments.iter().map(|arg| arg.handle()).collect();
let _ = callback.Call_(&*element, arguments, ExceptionHandling::Report);
@ -703,6 +707,14 @@ impl CustomElementReactionStack {
// Step 6
self.enqueue_element(element);
}
/// https://html.spec.whatwg.org/multipage/#enqueue-a-custom-element-upgrade-reaction
pub fn enqueue_upgrade_reaction(&self, element: &Element, definition: Rc<CustomElementDefinition>) {
// Step 1
element.push_upgrade_reaction(definition);
// Step 2
self.enqueue_element(element);
}
}
/// https://html.spec.whatwg.org/multipage/#element-queue

4
components/script/dom/element.rs
View file

@ -300,6 +300,10 @@ impl Element {
self.custom_element_reaction_queue.borrow_mut().push(CustomElementReaction::Callback(function, args));
}
pub fn push_upgrade_reaction(&self, definition: Rc<CustomElementDefinition>) {
self.custom_element_reaction_queue.borrow_mut().push(CustomElementReaction::Upgrade(definition));
}
pub fn invoke_reactions(&self) {
let mut reaction_queue = self.custom_element_reaction_queue.borrow_mut();
for reaction in reaction_queue.iter() {