diff options
Diffstat (limited to 'components/script/dom/htmlbodyelement.rs')
| -rw-r--r-- | components/script/dom/htmlbodyelement.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/components/script/dom/htmlbodyelement.rs b/components/script/dom/htmlbodyelement.rs index 8ac184ea51d..ca133b88dbb 100644 --- a/components/script/dom/htmlbodyelement.rs +++ b/components/script/dom/htmlbodyelement.rs @@ -47,6 +47,16 @@ impl HTMLBodyElement { let element = HTMLBodyElement::new_inherited(localName, prefix, document); Node::reflect_node(box element, document, HTMLBodyElementBinding::Wrap) } + + /// https://drafts.csswg.org/cssom-view/#the-html-body-element + pub fn is_the_html_body_element(&self) -> bool { + let self_node = self.upcast::<Node>(); + let root_elem = self.upcast::<Element>().root_element(); + let root_node = root_elem.upcast::<Node>(); + root_node.is_parent_of(self_node) && + self_node.preceding_siblings().all(|n| !n.is::<HTMLBodyElement>()) + } + } impl HTMLBodyElementMethods for HTMLBodyElement { |