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Implement querySelector for Document

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This commit is contained in:
Bruno de Oliveira Abinader 2014-06-04 13:28:36 -07:00
parent f0aadb790d
commit 249c484c24
5 changed files with 38 additions and 5 deletions
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29
src/components/script/dom/node.rs
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@ -15,7 +15,7 @@ use dom::bindings::js::{JS, JSRef, RootedReference, Temporary, Root, OptionalUnr
use dom::bindings::js::{OptionalSettable, TemporaryPushable, OptionalRootedRootable};
use dom::bindings::js::{ResultRootable, OptionalRootable};
use dom::bindings::utils::{Reflectable, Reflector, reflect_dom_object};
use dom::bindings::error::{ErrorResult, Fallible, NotFound, HierarchyRequest};
use dom::bindings::error::{ErrorResult, Fallible, NotFound, HierarchyRequest, Syntax};
use dom::bindings::utils;
use dom::characterdata::{CharacterData, CharacterDataMethods};
use dom::comment::Comment;
@ -36,6 +36,7 @@ use layout_interface::{ContentBoxQuery, ContentBoxResponse, ContentBoxesQuery, C
LayoutChan, ReapLayoutDataMsg, TrustedNodeAddress, UntrustedNodeAddress};
use servo_util::geometry::Au;
use servo_util::str::{DOMString, null_str_as_empty};
use style::{parse_selector_list, matches_compound_selector, NamespaceMap};
use js::jsapi::{JSContext, JSObject, JSRuntime};
use js::jsfriendapi;
@ -396,6 +397,8 @@ pub trait NodeHelpers {
fn get_bounding_content_box(&self) -> Rect<Au>;
fn get_content_boxes(&self) -> Vec<Rect<Au>>;
fn query_selector(&self, selectors: DOMString) -> Fallible<Option<Temporary<Element>>>;
fn remove_self(&self);
}
@ -552,6 +555,30 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
rects
}
// http://dom.spec.whatwg.org/#dom-parentnode-queryselector
fn query_selector(&self, selectors: DOMString) -> Fallible<Option<Temporary<Element>>> {
// Step 1.
let namespace = NamespaceMap::new();
match parse_selector_list(tokenize(selectors.as_slice()).map(|(token, _)| token).collect(), &namespace) {
// Step 2.
None => return Err(Syntax),
// Step 3.
Some(ref selectors) => {
for selector in selectors.iter() {
assert!(selector.pseudo_element.is_none());
for elem in self.child_elements() {
let node: &JSRef<Node> = NodeCast::from_ref(&elem);
let mut _shareable: bool = false;
if matches_compound_selector(selector.compound_selectors.deref(), node, &mut _shareable) {
return Ok(Some(Temporary::from_rooted(&elem)));
}
}
}
}
}
Ok(None)
}
fn ancestors(&self) -> AncestorIterator {
AncestorIterator {
current: self.parent_node.get().map(|node| (*node.root()).clone()),