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HTMLFormElement::Elements should honor [SameObject] attribute

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Ideally, this would get tested by web-platform-tests, but that has yet
to be implemented:

https://github.com/w3c/web-platform-tests/issues/2462
This commit is contained in:
Corey Farwell 2016-01-10 18:27:07 -05:00
parent 4056716ecd
commit 1ff1ec69dd
3 changed files with 36 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

12
components/script/dom/htmlformelement.rs
View file

@ -13,7 +13,7 @@ use dom::bindings::codegen::Bindings::HTMLTextAreaElementBinding::HTMLTextAreaEl
use dom::bindings::conversions::DerivedFrom;
use dom::bindings::global::GlobalRef;
use dom::bindings::inheritance::{Castable, ElementTypeId, HTMLElementTypeId, NodeTypeId};
use dom::bindings::js::{Root};
use dom::bindings::js::{JS, MutNullableHeap, Root};
use dom::bindings::reflector::Reflectable;
use dom::document::Document;
use dom::element::Element;
@ -47,6 +47,7 @@ use util::str::DOMString;
pub struct HTMLFormElement {
htmlelement: HTMLElement,
marked_for_reset: Cell<bool>,
elements: MutNullableHeap<JS<HTMLFormControlsCollection>>,
}
impl HTMLFormElement {
@ -56,6 +57,7 @@ impl HTMLFormElement {
HTMLFormElement {
htmlelement: HTMLElement::new_inherited(localName, prefix, document),
marked_for_reset: Cell::new(false),
elements: Default::default(),
}
}
@ -142,6 +144,10 @@ impl HTMLFormElementMethods for HTMLFormElement {
// https://html.spec.whatwg.org/multipage/#dom-form-elements
fn Elements(&self) -> Root<HTMLFormControlsCollection> {
if let Some(elements) = self.elements.get() {
return elements;
}
#[derive(JSTraceable, HeapSizeOf)]
struct ElementsFilter {
form: Root<HTMLFormElement>
@ -193,7 +199,9 @@ impl HTMLFormElementMethods for HTMLFormElement {
}
let filter = box ElementsFilter { form: Root::from_ref(self) };
let window = window_from_node(self);
HTMLFormControlsCollection::new(window.r(), self.upcast(), filter)
let elements = HTMLFormControlsCollection::new(window.r(), self.upcast(), filter);
self.elements.set(Some(&elements));
elements
}
// https://html.spec.whatwg.org/multipage/#dom-form-length

6
tests/wpt/metadata/MANIFEST.json
View file

@ -35209,6 +35209,12 @@
"path": "html/semantics/forms/the-button-element/button-activate.html",
"url": "/html/semantics/forms/the-button-element/button-activate.html"
}
],
"html/semantics/forms/the-form-element/form-elements-sameobject.html": [
{
"path": "html/semantics/forms/the-form-element/form-elements-sameobject.html",
"url": "/html/semantics/forms/the-form-element/form-elements-sameobject.html"
}
]
}
},

20
tests/wpt/web-platform-tests/html/semantics/forms/the-form-element/form-elements-sameobject.html Normal file
View file

@ -0,0 +1,20 @@
<!doctype html>
<meta charset="utf-8">
<title>Testing [SameObject] on the 'elements' attribute on the 'form' element</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<form>
<input>
</form>
<script>
test(function() {
var form = document.querySelector('form');
var elements = form.elements;
assert_true(elements === form.elements);
form.appendChild(document.createElement('input'));
assert_true(elements === form.elements);
}, "[SameObject] should apply to 'elements' attr on <form>");
</script>