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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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59
components/script/dom/document.rs
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@ -59,10 +59,7 @@ use dom::htmlheadelement::HTMLHeadElement;
use dom::htmlhtmlelement::HTMLHtmlElement;
use dom::htmliframeelement::HTMLIFrameElement;
use dom::htmlimageelement::HTMLImageElement;
use dom::htmllinkelement::HTMLLinkElement;
use dom::htmlmetaelement::HTMLMetaElement;
use dom::htmlscriptelement::HTMLScriptElement;
use dom::htmlstyleelement::HTMLStyleElement;
use dom::htmltitleelement::HTMLTitleElement;
use dom::keyboardevent::KeyboardEvent;
use dom::location::Location;
@ -152,10 +149,10 @@ enum ParserBlockedByScript {
#[derive(JSTraceable, HeapSizeOf)]
#[must_root]
struct StylesheetInDocument {
node: JS<Node>,
pub struct StylesheetInDocument {
pub node: JS<Node>,
#[ignore_heap_size_of = "Arc"]
stylesheet: Arc<Stylesheet>,
pub stylesheet: Arc<Stylesheet>,
}
// https://dom.spec.whatwg.org/#document
@ -189,6 +186,7 @@ pub struct Document {
stylesheets: DOMRefCell<Option<Vec<StylesheetInDocument>>>,
/// Whether the list of stylesheets has changed since the last reflow was triggered.
stylesheets_changed_since_reflow: Cell<bool>,
stylesheet_list: MutNullableHeap<JS<StyleSheetList>>,
ready_state: Cell<DocumentReadyState>,
/// Whether the DOMContentLoaded event has already been dispatched.
domcontentloaded_dispatched: Cell<bool>,
@ -1811,6 +1809,7 @@ impl Document {
applets: Default::default(),
stylesheets: DOMRefCell::new(None),
stylesheets_changed_since_reflow: Cell::new(false),
stylesheet_list: MutNullableHeap::new(None),
ready_state: Cell::new(ready_state),
domcontentloaded_dispatched: Cell::new(domcontentloaded_dispatched),
possibly_focused: Default::default(),
@ -1910,35 +1909,37 @@ impl Document {
self.GetDocumentElement().and_then(Root::downcast)
}
// Ensure that the stylesheets vector is populated
fn ensure_stylesheets(&self) {
let mut stylesheets = self.stylesheets.borrow_mut();
if stylesheets.is_none() {
*stylesheets = Some(self.upcast::<Node>()
.traverse_preorder()
.filter_map(|node| {
node.get_stylesheet()
.map(|stylesheet| StylesheetInDocument {
node: JS::from_ref(&*node),
stylesheet: stylesheet,
})
})
.collect());
};
}
/// Returns the list of stylesheets associated with nodes in the document.
pub fn stylesheets(&self) -> Vec<Arc<Stylesheet>> {
{
let mut stylesheets = self.stylesheets.borrow_mut();
if stylesheets.is_none() {
*stylesheets = Some(self.upcast::<Node>()
.traverse_preorder()
.filter_map(|node| {
if let Some(node) = node.downcast::<HTMLStyleElement>() {
node.get_stylesheet()
} else if let Some(node) = node.downcast::<HTMLLinkElement>() {
node.get_stylesheet()
} else if let Some(node) = node.downcast::<HTMLMetaElement>() {
node.get_stylesheet()
} else {
None
}.map(|stylesheet| StylesheetInDocument {
node: JS::from_ref(&*node),
stylesheet: stylesheet
})
})
.collect());
};
}
self.ensure_stylesheets();
self.stylesheets.borrow().as_ref().unwrap().iter()
.map(|s| s.stylesheet.clone())
.collect()
}
pub fn with_style_sheets_in_document<F, T>(&self, mut f: F) -> T
where F: FnMut(&[StylesheetInDocument]) -> T {
self.ensure_stylesheets();
f(&self.stylesheets.borrow().as_ref().unwrap())
}
/// https://html.spec.whatwg.org/multipage/#appropriate-template-contents-owner-document
pub fn appropriate_template_contents_owner_document(&self) -> Root<Document> {
self.appropriate_template_contents_owner_document.or_init(|| {
@ -2038,7 +2039,7 @@ impl Element {
impl DocumentMethods for Document {
// https://drafts.csswg.org/cssom/#dom-document-stylesheets
fn StyleSheets(&self) -> Root<StyleSheetList> {
StyleSheetList::new(&self.window, JS::from_ref(&self))
self.stylesheet_list.or_init(|| StyleSheetList::new(&self.window, JS::from_ref(&self)))
}
// https://dom.spec.whatwg.org/#dom-document-implementation