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Support basic immutable CSSOM

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This commit is contained in:
Manish Goregaokar 2016-11-10 16:16:56 -08:00
parent 2220fcdc0b
commit 177d6fa4ee
33 changed files with 861 additions and 43 deletions
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15
components/script/dom/htmllinkelement.rs
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@ -14,6 +14,7 @@ use dom::bindings::js::{JS, MutNullableHeap, Root, RootedReference};
use dom::bindings::refcounted::Trusted;
use dom::bindings::reflector::Reflectable;
use dom::bindings::str::DOMString;
use dom::cssstylesheet::CSSStyleSheet;
use dom::document::Document;
use dom::domtokenlist::DOMTokenList;
use dom::element::{AttributeMutation, Element, ElementCreator};
@ -56,6 +57,7 @@ pub struct HTMLLinkElement {
rel_list: MutNullableHeap<JS<DOMTokenList>>,
#[ignore_heap_size_of = "Arc"]
stylesheet: DOMRefCell<Option<Arc<Stylesheet>>>,
cssom_stylesheet: MutNullableHeap<JS<CSSStyleSheet>>,
/// https://html.spec.whatwg.org/multipage/#a-style-sheet-that-is-blocking-scripts
parser_inserted: Cell<bool>,
@ -69,6 +71,7 @@ impl HTMLLinkElement {
rel_list: Default::default(),
parser_inserted: Cell::new(creator == ElementCreator::ParserCreated),
stylesheet: DOMRefCell::new(None),
cssom_stylesheet: MutNullableHeap::new(None),
}
}
@ -85,6 +88,18 @@ impl HTMLLinkElement {
pub fn get_stylesheet(&self) -> Option<Arc<Stylesheet>> {
self.stylesheet.borrow().clone()
}
pub fn get_cssom_stylesheet(&self) -> Option<Root<CSSStyleSheet>> {
self.get_stylesheet().map(|sheet| {
self.cssom_stylesheet.or_init(|| {
CSSStyleSheet::new(&window_from_node(self),
"text/css".into(),
None, // todo handle location
None, // todo handle title
sheet)
})
})
}
}
fn get_attr(element: &Element, local_name: &LocalName) -> Option<String> {