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Cache the first base element with an href attribute on the Document.

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Ms2ger 2015-07-28 19:33:20 +02:00 • committed by Ms2ger
parent bd31b51a87
commit 6951119f5e
2 changed files with 56 additions and 3 deletions
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15
components/script/dom/document.rs
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@ -155,6 +155,8 @@ pub struct Document {
current_parser: MutNullableHeap<JS<ServoHTMLParser>>,
/// When we should kick off a reflow. This happens during parsing.
reflow_timeout: Cell<Option<u64>>,
/// The cached first `base` element with an `href` attribute.
base_element: MutNullableHeap<JS<HTMLBaseElement>>,
}
impl PartialEq for Document {
@ -241,6 +243,8 @@ pub trait DocumentHelpers<'a> {
fn base_url(self) -> Url;
/// Returns the first `base` element in the DOM that has an `href` attribute.
fn base_element(self) -> Option<Root<HTMLBaseElement>>;
/// Refresh the cached first base element in the DOM.
fn refresh_base_element(self);
fn quirks_mode(self) -> QuirksMode;
fn set_quirks_mode(self, mode: QuirksMode);
fn set_encoding_name(self, name: DOMString);
@ -370,11 +374,17 @@ impl<'a> DocumentHelpers<'a> for &'a Document {
/// Returns the first `base` element in the DOM that has an `href` attribute.
fn base_element(self) -> Option<Root<HTMLBaseElement>> {
NodeCast::from_ref(self)
self.base_element.get().map(Root::from_rooted)
}
/// Refresh the cached first base element in the DOM.
fn refresh_base_element(self) {
let base = NodeCast::from_ref(self)
.traverse_preorder()
.filter_map(HTMLBaseElementCast::to_root)
.filter(|element| ElementCast::from_ref(&**element).has_attribute(&atom!("href")))
.next()
.next();
self.base_element.set(base.map(|element| JS::from_ref(&*element)));
}
fn quirks_mode(self) -> QuirksMode {
@ -1131,6 +1141,7 @@ impl Document {
loader: DOMRefCell::new(doc_loader),
current_parser: Default::default(),
reflow_timeout: Cell::new(None),
base_element: Default::default(),
}
}