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Auto merge of #16883 - jdm:mutationobserver, r=jdm
Mutation Observer API Rebased from #16668. - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix (partially) #6633 - [X] There are tests for these changes <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/16883) <!-- Reviewable:end -->
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commit
5da0aa9f11
15 changed files with 432 additions and 180 deletions
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@ -63,6 +63,7 @@ use dom::htmltablerowelement::{HTMLTableRowElement, HTMLTableRowElementLayoutHel
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use dom::htmltablesectionelement::{HTMLTableSectionElement, HTMLTableSectionElementLayoutHelpers};
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use dom::htmltemplateelement::HTMLTemplateElement;
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use dom::htmltextareaelement::{HTMLTextAreaElement, LayoutHTMLTextAreaElementHelpers};
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use dom::mutationobserver::{Mutation, MutationObserver};
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use dom::namednodemap::NamedNodeMap;
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use dom::node::{CLICK_IN_PROGRESS, ChildrenMutation, LayoutNodeHelpers, Node};
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use dom::node::{NodeDamage, SEQUENTIALLY_FOCUSABLE, UnbindContext};
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@ -1003,6 +1004,12 @@ impl Element {
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}
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pub fn push_attribute(&self, attr: &Attr) {
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let name = attr.local_name().clone();
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let namespace = attr.namespace().clone();
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let old_value = DOMString::from(&**attr.value());
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let mutation = Mutation::Attribute { name, namespace, old_value };
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MutationObserver::queue_a_mutation_record(&self.node, mutation);
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assert!(attr.GetOwnerElement().r() == Some(self));
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self.will_mutate_attr(attr);
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self.attrs.borrow_mut().push(JS::from_ref(attr));
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@ -1125,13 +1132,18 @@ impl Element {
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}
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fn remove_first_matching_attribute<F>(&self, find: F) -> Option<Root<Attr>>
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where F: Fn(&Attr) -> bool
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{
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where F: Fn(&Attr) -> bool {
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let idx = self.attrs.borrow().iter().position(|attr| find(&attr));
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idx.map(|idx| {
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let attr = Root::from_ref(&*(*self.attrs.borrow())[idx]);
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self.will_mutate_attr(&attr);
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let name = attr.local_name().clone();
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let namespace = attr.namespace().clone();
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let old_value = DOMString::from(&**attr.value());
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let mutation = Mutation::Attribute { name, namespace, old_value, };
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MutationObserver::queue_a_mutation_record(&self.node, mutation);
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self.attrs.borrow_mut().remove(idx);
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attr.set_owner(None);
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if attr.namespace() == &ns!() {
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