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Cleanup Document::SetBody.

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This commit is contained in:
Ms2ger 2014-12-04 11:38:54 +01:00
parent 2ce4c6c529
commit d22964792a
1 changed files with 12 additions and 13 deletions
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21
components/script/dom/document.rs
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@ -821,21 +821,21 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
// http://www.whatwg.org/specs/web-apps/current-work/#dom-document-body
fn SetBody(self, new_body: Option<JSRef<HTMLElement>>) -> ErrorResult {
// Step 1.
match new_body {
Some(ref htmlelem) => {
let node: JSRef<Node> = NodeCast::from_ref(*htmlelem);
let new_body = match new_body {
Some(new_body) => new_body,
None => return Err(HierarchyRequest),
};
let node: JSRef<Node> = NodeCast::from_ref(new_body);
match node.type_id() {
ElementNodeTypeId(HTMLBodyElementTypeId) | ElementNodeTypeId(HTMLFrameSetElementTypeId) => {}
ElementNodeTypeId(HTMLBodyElementTypeId) |
ElementNodeTypeId(HTMLFrameSetElementTypeId) => {}
_ => return Err(HierarchyRequest)
}
}
None => return Err(HierarchyRequest)
}
// Step 2.
let old_body = self.GetBody().root();
//FIXME: covariant lifetime workaround. do not judge.
if old_body.as_ref().map(|body| body.deref()) == new_body.as_ref().map(|a| &*a) {
if old_body.as_ref().map(|body| **body) == Some(new_body) {
return Ok(());
}
@ -844,8 +844,7 @@ impl<'a> DocumentMethods for JSRef<'a, Document> {
// Step 4.
None => return Err(HierarchyRequest),
Some(ref root) => {
let new_body_unwrapped = new_body.unwrap();
let new_body: JSRef<Node> = NodeCast::from_ref(new_body_unwrapped);
let new_body: JSRef<Node> = NodeCast::from_ref(new_body);
let root: JSRef<Node> = NodeCast::from_ref(**root);
match old_body {