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Mutation Observer API

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Sumit 2017-05-14 01:44:14 -04:00 • committed by Josh Matthews
parent fa251ec96b
commit 3ca89204ff
15 changed files with 432 additions and 180 deletions
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18
components/script/dom/element.rs
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@ -63,6 +63,7 @@ use dom::htmltablerowelement::{HTMLTableRowElement, HTMLTableRowElementLayoutHel
use dom::htmltablesectionelement::{HTMLTableSectionElement, HTMLTableSectionElementLayoutHelpers};
use dom::htmltemplateelement::HTMLTemplateElement;
use dom::htmltextareaelement::{HTMLTextAreaElement, LayoutHTMLTextAreaElementHelpers};
use dom::mutationobserver::{Mutation, MutationObserver};
use dom::namednodemap::NamedNodeMap;
use dom::node::{CLICK_IN_PROGRESS, ChildrenMutation, LayoutNodeHelpers, Node};
use dom::node::{NodeDamage, SEQUENTIALLY_FOCUSABLE, UnbindContext};
@ -1003,6 +1004,12 @@ impl Element {
}
pub fn push_attribute(&self, attr: &Attr) {
let name = attr.local_name().clone();
let namespace = attr.namespace().clone();
let old_value = DOMString::from(&**attr.value());
let mutation = Mutation::Attribute { name, namespace, old_value };
MutationObserver::queue_a_mutation_record(&self.node, mutation);
assert!(attr.GetOwnerElement().r() == Some(self));
self.will_mutate_attr(attr);
self.attrs.borrow_mut().push(JS::from_ref(attr));
@ -1125,13 +1132,18 @@ impl Element {
}
fn remove_first_matching_attribute<F>(&self, find: F) -> Option<Root<Attr>>
where F: Fn(&Attr) -> bool
{
where F: Fn(&Attr) -> bool {
let idx = self.attrs.borrow().iter().position(|attr| find(&attr));
idx.map(|idx| {
let attr = Root::from_ref(&*(*self.attrs.borrow())[idx]);
self.will_mutate_attr(&attr);
let name = attr.local_name().clone();
let namespace = attr.namespace().clone();
let old_value = DOMString::from(&**attr.value());
let mutation = Mutation::Attribute { name, namespace, old_value, };
MutationObserver::queue_a_mutation_record(&self.node, mutation);
self.attrs.borrow_mut().remove(idx);
attr.set_owner(None);
if attr.namespace() == &ns!() {