diff options
Diffstat (limited to 'components/script/dom/htmlselectelement.rs')
| -rw-r--r-- | components/script/dom/htmlselectelement.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/components/script/dom/htmlselectelement.rs b/components/script/dom/htmlselectelement.rs index 03d10e117f4..c44dac71000 100644 --- a/components/script/dom/htmlselectelement.rs +++ b/components/script/dom/htmlselectelement.rs @@ -299,6 +299,36 @@ impl HTMLSelectElementMethods for HTMLSelectElement { opt.set_selectedness(false); } } + + // https://html.spec.whatwg.org/multipage/#dom-select-selectedindex + fn SelectedIndex(&self) -> i32 { + self.upcast::<Node>() + .traverse_preorder() + .filter_map(Root::downcast::<HTMLOptionElement>) + .enumerate() + .filter(|&(_, ref opt_elem)| opt_elem.Selected()) + .map(|(i, _)| i as i32) + .next() + .unwrap_or(-1) + } + + // https://html.spec.whatwg.org/multipage/#dom-select-selectedindex + fn SetSelectedIndex(&self, index: i32) { + let mut opt_iter = self.upcast::<Node>() + .traverse_preorder() + .filter_map(Root::downcast::<HTMLOptionElement>); + for opt in opt_iter.by_ref().take(index as usize) { + opt.set_selectedness(false); + } + if let Some(opt) = opt_iter.next() { + opt.set_selectedness(true); + opt.set_dirtiness(true); + // Reset remaining <option> elements + for opt in opt_iter { + opt.set_selectedness(false); + } + } + } } impl VirtualMethods for HTMLSelectElement { |