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Implement HTMLFormElement::Elements

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Fixes #8566
This commit is contained in:
Corey Farwell 2016-01-09 13:10:26 -05:00
parent 6d49681c79
commit bff8947e43
14 changed files with 142 additions and 68 deletions
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60
components/script/dom/htmlformelement.rs
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@ -20,10 +20,14 @@ use dom::element::Element;
use dom::event::{EventBubbles, EventCancelable};
use dom::eventtarget::EventTarget;
use dom::htmlbuttonelement::HTMLButtonElement;
use dom::htmlcollection::CollectionFilter;
use dom::htmldatalistelement::HTMLDataListElement;
use dom::htmlelement::HTMLElement;
use dom::htmlfieldsetelement::HTMLFieldSetElement;
use dom::htmlformcontrolscollection::HTMLFormControlsCollection;
use dom::htmlinputelement::HTMLInputElement;
use dom::htmlobjectelement::HTMLObjectElement;
use dom::htmloutputelement::HTMLOutputElement;
use dom::htmlselectelement::HTMLSelectElement;
use dom::htmltextareaelement::HTMLTextAreaElement;
use dom::node::{Node, document_from_node, window_from_node};
@ -135,6 +139,62 @@ impl HTMLFormElementMethods for HTMLFormElement {
fn Reset(&self) {
self.reset(ResetFrom::FromFormResetMethod);
}
// https://html.spec.whatwg.org/multipage/#dom-form-elements
fn Elements(&self) -> Root<HTMLFormControlsCollection> {
#[derive(JSTraceable, HeapSizeOf)]
struct ElementsFilter {
form: Root<HTMLFormElement>
}
impl CollectionFilter for ElementsFilter {
fn filter<'a>(&self, elem: &'a Element, _root: &'a Node) -> bool {
let form_owner = match elem.upcast::<Node>().type_id() {
NodeTypeId::Element(ElementTypeId::HTMLElement(t)) => {
match t {
HTMLElementTypeId::HTMLButtonElement => {
elem.downcast::<HTMLButtonElement>().unwrap().form_owner()
}
HTMLElementTypeId::HTMLFieldSetElement => {
elem.downcast::<HTMLFieldSetElement>().unwrap().form_owner()
}
HTMLElementTypeId::HTMLInputElement => {
let input_elem = elem.downcast::<HTMLInputElement>().unwrap();
if input_elem.type_() == atom!("image") {
return false;
}
input_elem.form_owner()
}
HTMLElementTypeId::HTMLObjectElement => {
elem.downcast::<HTMLObjectElement>().unwrap().form_owner()
}
HTMLElementTypeId::HTMLOutputElement => {
elem.downcast::<HTMLOutputElement>().unwrap().form_owner()
}
HTMLElementTypeId::HTMLSelectElement => {
elem.downcast::<HTMLSelectElement>().unwrap().form_owner()
}
HTMLElementTypeId::HTMLTextAreaElement => {
elem.downcast::<HTMLTextAreaElement>().unwrap().form_owner()
}
_ => {
debug_assert!(!elem.downcast::<HTMLElement>().unwrap().is_listed_element());
return false;
}
}
}
_ => return false,
};
match form_owner {
Some(form_owner) => form_owner == self.form,
None => false,
}
}
}
let filter = box ElementsFilter { form: Root::from_ref(self) };
let window = window_from_node(self);
HTMLFormControlsCollection::new(window.r(), self.upcast(), filter)
}
}
#[derive(Copy, Clone, HeapSizeOf, PartialEq)]