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Auto merge of #13762 - frewsxcv:select-reset, r=Manishearth

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Implement "reset algorithm" for `<select>`.

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This commit is contained in:
bors-servo 2016-10-20 23:31:46 -05:00 • committed by GitHub
commit 28be83bd9a
4 changed files with 31 additions and 7 deletions
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3
components/script/dom/htmlformelement.rs
View file

@ -634,8 +634,7 @@ impl HTMLFormElement {
// {}
//}
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLSelectElement)) => {
// Unimplemented
{}
child.downcast::<HTMLSelectElement>().unwrap().reset();
}
NodeTypeId::Element(ElementTypeId::HTMLElement(HTMLElementTypeId::HTMLTextAreaElement)) => {
child.downcast::<HTMLTextAreaElement>().unwrap().reset();

10
components/script/dom/htmlselectelement.rs
View file

@ -84,6 +84,16 @@ impl HTMLSelectElement {
HTMLSelectElementBinding::Wrap)
}
// https://html.spec.whatwg.org/multipage/#the-select-element:concept-form-reset-control
pub fn reset(&self) {
let node = self.upcast::<Node>();
for opt in node.traverse_preorder().filter_map(Root::downcast::<HTMLOptionElement>) {
opt.set_selectedness(opt.DefaultSelected());
opt.set_dirtiness(false);
}
self.ask_for_reset();
}
// https://html.spec.whatwg.org/multipage/#ask-for-a-reset
pub fn ask_for_reset(&self) {
if self.Multiple() {