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Return None as style for elements not in a document

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This commit is contained in:
David Zbarsky 2015-07-30 12:36:08 -04:00
parent acbca7b3aa
commit 36145d0686
2 changed files with 11 additions and 0 deletions
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5
components/script/dom/cssstyledeclaration.rs
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@ -99,6 +99,11 @@ impl<'a> PrivateCSSStyleDeclarationHelpers for &'a CSSStyleDeclaration {
fn get_computed_style(self, property: &Atom) -> Option<DOMString> {
let owner = self.owner.root();
let node = NodeCast::from_ref(owner.r());
if !node.is_in_doc() {
// TODO: Node should be matched against the style rules of this window.
// Firefox is currently the only browser to implement this.
return None;
}
let addr = node.to_trusted_node_address();
window_from_node(owner.r()).resolved_style_query(addr, self.pseudo.clone(), property)
}

6
tests/wpt/mozilla/tests/mozilla/getComputedStyle.html
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@ -40,6 +40,12 @@
assert_equals(getComputedStyle(div, '::after').getPropertyValue("color"), "");
}, "Missing :after pseudoelement");
test(function() {
var div = document.createElement("div");
div.id = "foo";
assert_equals(getComputedStyle(div).getPropertyValue("width"), "");
}, "Blank style for elements not in a document");
</script>
</body>
</html>