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parent
614e9ca840
commit
670693ba7e
5 changed files with 48 additions and 41 deletions
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@ -6,6 +6,7 @@ use dom::attr::Attr;
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use dom::bindings::codegen::Bindings::HTMLOptionElementBinding::HTMLOptionElementMethods;
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use dom::bindings::codegen::Bindings::HTMLSelectElementBinding;
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use dom::bindings::codegen::Bindings::HTMLSelectElementBinding::HTMLSelectElementMethods;
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use dom::bindings::codegen::Bindings::NodeBinding::NodeMethods;
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use dom::bindings::codegen::UnionTypes::HTMLElementOrLong;
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use dom::bindings::codegen::UnionTypes::HTMLOptionElementOrHTMLOptGroupElement;
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use dom::bindings::inheritance::Castable;
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@ -17,7 +18,7 @@ use dom::htmlelement::HTMLElement;
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use dom::htmlfieldsetelement::HTMLFieldSetElement;
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use dom::htmlformelement::{FormDatumValue, FormControl, FormDatum, HTMLFormElement};
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use dom::htmloptionelement::HTMLOptionElement;
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use dom::node::{Node, UnbindContext, window_from_node};
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use dom::node::{document_from_node, Node, UnbindContext, window_from_node};
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use dom::nodelist::NodeList;
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use dom::validation::Validatable;
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use dom::validitystate::ValidityState;
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@ -183,6 +184,50 @@ impl HTMLSelectElementMethods for HTMLSelectElement {
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fn Labels(&self) -> Root<NodeList> {
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self.upcast::<HTMLElement>().labels()
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}
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// https://html.spec.whatwg.org/multipage/#dom-select-length
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fn SetLength(&self, value: u32) {
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let length = self.Length();
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let node = self.upcast::<Node>();
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if value < length { // truncate the number of option elements
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let mut iter = node.rev_children().take((length - value) as usize);
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while let Some(child) = iter.next() {
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if let Err(e) = node.RemoveChild(&child) {
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warn!("Error removing child of HTMLSelectElement: {:?}", e);
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}
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}
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} else if value > length { // add new blank option elements
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let document = document_from_node(self);
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for _ in 0..(value - length) {
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let element = HTMLOptionElement::new(atom!("option"), None, &document.upcast());
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if let Err(e) = node.AppendChild(element.upcast()) {
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warn!("error appending child of HTMLSelectElement: {:?}", e);
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}
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}
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}
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}
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// https://html.spec.whatwg.org/multipage/#dom-select-length
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fn Length(&self) -> u32 {
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self.upcast::<Node>()
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.traverse_preorder()
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.filter_map(Root::downcast::<HTMLOptionElement>)
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.count() as u32
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}
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// https://html.spec.whatwg.org/multipage/#dom-select-item
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fn Item(&self, index: u32) -> Option<Root<Element>> {
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self.upcast::<Node>()
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.traverse_preorder()
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.filter_map(Root::downcast::<HTMLOptionElement>)
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.nth(index as usize)
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.map(|item| Root::from_ref(item.upcast()))
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}
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// https://html.spec.whatwg.org/multipage/#dom-select-item
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fn IndexedGetter(&self, index: u32) -> Option<Root<Element>> {
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self.Item(index)
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}
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}
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impl VirtualMethods for HTMLSelectElement {
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