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auto merge of #2616 : Ms2ger/servo/attrvalue, r=jdm
Obsoletes #2073.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
|
|
||
| use dom::attr::{Attr, TokenListAttrValue}; | ||
| use dom::bindings::codegen::Bindings::DOMTokenListBinding; | ||
| use dom::bindings::js::{JS, JSRef, Temporary, OptionalRootable}; | ||
| use dom::bindings::utils::{Reflector, Reflectable, reflect_dom_object}; | ||
| use dom::element::{Element, AttributeHandlers}; | ||
| use dom::node::window_from_node; | ||
|
|
||
| use servo_util::namespace::Null; | ||
| use servo_util::str::DOMString; | ||
|
|
||
| #[deriving(Encodable)] | ||
| pub struct DOMTokenList { | ||
| reflector_: Reflector, | ||
| element: JS<Element>, | ||
| local_name: &'static str, | ||
| } | ||
|
|
||
| impl DOMTokenList { | ||
| pub fn new_inherited(element: &JSRef<Element>, | ||
| local_name: &'static str) -> DOMTokenList { | ||
| DOMTokenList { | ||
| reflector_: Reflector::new(), | ||
| element: JS::from_rooted(element.clone()), | ||
| local_name: local_name, | ||
| } | ||
| } | ||
|
|
||
| pub fn new(element: &JSRef<Element>, | ||
| local_name: &'static str) -> Temporary<DOMTokenList> { | ||
| let window = window_from_node(element).root(); | ||
| reflect_dom_object(box DOMTokenList::new_inherited(element, local_name), | ||
| &*window, DOMTokenListBinding::Wrap) | ||
| } | ||
| } | ||
|
|
||
| impl Reflectable for DOMTokenList { | ||
| fn reflector<'a>(&'a self) -> &'a Reflector { | ||
| &self.reflector_ | ||
| } | ||
|
|
||
| fn mut_reflector<'a>(&'a mut self) -> &'a mut Reflector { | ||
| &mut self.reflector_ | ||
| } | ||
| } | ||
|
|
||
| trait PrivateDOMTokenListHelpers { | ||
| fn attribute(&self) -> Option<Temporary<Attr>>; | ||
| } | ||
|
|
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| impl<'a> PrivateDOMTokenListHelpers for JSRef<'a, DOMTokenList> { | ||
| fn attribute(&self) -> Option<Temporary<Attr>> { | ||
| let element = self.element.root(); | ||
| element.deref().get_attribute(Null, self.local_name) | ||
| } | ||
| } | ||
|
|
||
| pub trait DOMTokenListMethods { | ||
| fn Length(&self) -> u32; | ||
| fn Item(&self, index: u32) -> Option<DOMString>; | ||
| fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<DOMString>; | ||
| } | ||
|
|
||
| // http://dom.spec.whatwg.org/#domtokenlist | ||
| impl<'a> DOMTokenListMethods for JSRef<'a, DOMTokenList> { | ||
| // http://dom.spec.whatwg.org/#dom-domtokenlist-length | ||
| fn Length(&self) -> u32 { | ||
| let attribute = self.attribute().root(); | ||
| match attribute { | ||
| Some(attribute) => { | ||
| match *attribute.deref().value() { | ||
| TokenListAttrValue(_, ref indexes) => indexes.len() as u32, | ||
| _ => fail!("Expected a TokenListAttrValue"), | ||
| } | ||
| } | ||
| None => 0, | ||
| } | ||
| } | ||
|
|
||
| // http://dom.spec.whatwg.org/#dom-domtokenlist-item | ||
| fn Item(&self, index: u32) -> Option<DOMString> { | ||
| let attribute = self.attribute().root(); | ||
| attribute.and_then(|attribute| { | ||
| match *attribute.deref().value() { | ||
| TokenListAttrValue(ref value, ref indexes) => { | ||
| indexes.as_slice().get(index as uint).map(|&(start, end)| { | ||
| value.as_slice().slice(start, end).to_string() | ||
| }) | ||
| }, | ||
| _ => fail!("Expected a TokenListAttrValue"), | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| fn IndexedGetter(&self, index: u32, found: &mut bool) -> Option<DOMString> { | ||
| let item = self.Item(index); | ||
| *found = item.is_some(); | ||
| item | ||
| } | ||
| } |
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