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Implement value property on <select>.

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This commit is contained in:
Corey Farwell 2016-10-15 22:13:29 -04:00
parent 6e0d7326ab
commit a3d4d336b7
5 changed files with 36 additions and 22 deletions
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31
components/script/dom/htmlselectelement.rs
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@ -258,6 +258,37 @@ impl HTMLSelectElementMethods for HTMLSelectElement {
fn Remove(&self) {
self.upcast::<Element>().Remove()
}
// https://html.spec.whatwg.org/multipage/#dom-select-value
fn Value(&self) -> DOMString {
self.upcast::<Node>()
.traverse_preorder()
.filter_map(Root::downcast::<HTMLOptionElement>)
.filter(|opt_elem| opt_elem.Selected())
.map(|opt_elem| opt_elem.Value())
.next()
.unwrap_or_default()
}
// https://html.spec.whatwg.org/multipage/#dom-select-value
fn SetValue(&self, value: DOMString) {
let mut opt_iter = self.upcast::<Node>()
.traverse_preorder()
.filter_map(Root::downcast::<HTMLOptionElement>);
// Reset until we find an <option> with a matching value
for opt in opt_iter.by_ref() {
if opt.Value() == value {
opt.set_selectedness(true);
opt.set_dirtiness(true);
break;
}
opt.set_selectedness(false);
}
// Reset remaining <option> elements
for opt in opt_iter {
opt.set_selectedness(false);
}
}
}
impl VirtualMethods for HTMLSelectElement {