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Implement NodeHelpers::len()

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Anthony Ramine 2015-04-10 16:24:27 +02:00
parent 738f006afe
commit d8c5092a6e
1 changed files with 12 additions and 0 deletions
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12
components/script/dom/node.rs
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@ -427,6 +427,7 @@ pub trait NodeHelpers {
fn is_parent_of(self, child: JSRef<Node>) -> bool;
fn type_id(self) -> NodeTypeId;
fn len(self) -> u32;
fn parent_node(self) -> Option<Temporary<Node>>;
fn first_child(self) -> Option<Temporary<Node>>;
@ -567,6 +568,17 @@ impl<'a> NodeHelpers for JSRef<'a, Node> {
self.type_id
}
// https://dom.spec.whatwg.org/#concept-node-length
fn len(self) -> u32 {
match self.type_id {
NodeTypeId::DocumentType => 0,
NodeTypeId::CharacterData(_) => {
CharacterDataCast::to_ref(self).unwrap().Length()
},
_ => self.children().count() as u32
}
}
fn parent_node(self) -> Option<Temporary<Node>> {
self.parent_node.get().map(Temporary::from_rooted)
}