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/* 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;
use dom::bindings::codegen::Bindings::DOMTokenListBinding;
use dom::bindings::codegen::Bindings::DOMTokenListBinding::DOMTokenListMethods;
use dom::bindings::error::{Error, ErrorResult, Fallible};
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::root::{Dom, DomRoot};
use dom::bindings::str::DOMString;
use dom::element::Element;
use dom::node::window_from_node;
use dom_struct::dom_struct;
use html5ever::LocalName;
use servo_atoms::Atom;
use style::str::HTML_SPACE_CHARACTERS;
#[dom_struct]
pub struct DOMTokenList {
reflector_: Reflector,
element: Dom<Element>,
local_name: LocalName,
}
impl DOMTokenList {
pub fn new_inherited(element: &Element, local_name: LocalName) -> DOMTokenList {
DOMTokenList {
reflector_: Reflector::new(),
element: Dom::from_ref(element),
local_name: local_name,
}
}
pub fn new(element: &Element, local_name: &LocalName) -> DomRoot<DOMTokenList> {
let window = window_from_node(element);
reflect_dom_object(box DOMTokenList::new_inherited(element, local_name.clone()),
&*window,
DOMTokenListBinding::Wrap)
}
fn attribute(&self) -> Option<DomRoot<Attr>> {
self.element.get_attribute(&ns!(), &self.local_name)
}
fn check_token_exceptions(&self, token: &str) -> Fallible<Atom> {
match token {
"" => Err(Error::Syntax),
slice if slice.find(HTML_SPACE_CHARACTERS).is_some() => Err(Error::InvalidCharacter),
slice => Ok(Atom::from(slice)),
}
}
}
// https://dom.spec.whatwg.org/#domtokenlist
impl DOMTokenListMethods for DOMTokenList {
// https://dom.spec.whatwg.org/#dom-domtokenlist-length
fn Length(&self) -> u32 {
self.attribute().map_or(0, |attr| {
attr.value().as_tokens().len()
}) as u32
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-item
fn Item(&self, index: u32) -> Option<DOMString> {
self.attribute().and_then(|attr| {
// FIXME(ajeffrey): Convert directly from Atom to DOMString
attr.value().as_tokens().get(index as usize).map(|token| DOMString::from(&**token))
})
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-contains
fn Contains(&self, token: DOMString) -> bool {
let token = Atom::from(token);
self.attribute().map_or(false, |attr| {
attr.value()
.as_tokens()
.iter()
.any(|atom: &Atom| *atom == token)
})
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-add
fn Add(&self, tokens: Vec<DOMString>) -> ErrorResult {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
for token in &tokens {
let token = self.check_token_exceptions(&token)?;
if !atoms.iter().any(|atom| *atom == token) {
atoms.push(token);
}
}
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(())
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-remove
fn Remove(&self, tokens: Vec<DOMString>) -> ErrorResult {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
for token in &tokens {
let token = self.check_token_exceptions(&token)?;
atoms.iter().position(|atom| *atom == token).map(|index| atoms.remove(index));
}
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(())
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-toggle
fn Toggle(&self, token: DOMString, force: Option<bool>) -> Fallible<bool> {
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
let token = self.check_token_exceptions(&token)?;
match atoms.iter().position(|atom| *atom == token) {
Some(index) => match force {
Some(true) => Ok(true),
_ => {
atoms.remove(index);
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(false)
}
},
None => match force {
Some(false) => Ok(false),
_ => {
atoms.push(token);
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
Ok(true)
}
},
}
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-value
fn Value(&self) -> DOMString {
self.element.get_string_attribute(&self.local_name)
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-value
fn SetValue(&self, value: DOMString) {
self.element.set_tokenlist_attribute(&self.local_name, value);
}
// https://dom.spec.whatwg.org/#dom-domtokenlist-replace
fn Replace(&self, token: DOMString, new_token: DOMString) -> ErrorResult {
if token.is_empty() || new_token.is_empty() {
// Step 1.
return Err(Error::Syntax);
}
if token.contains(HTML_SPACE_CHARACTERS) || new_token.contains(HTML_SPACE_CHARACTERS) {
// Step 2.
return Err(Error::InvalidCharacter);
}
// Steps 3-4.
let token = Atom::from(token);
let new_token = Atom::from(new_token);
let mut atoms = self.element.get_tokenlist_attribute(&self.local_name);
if let Some(pos) = atoms.iter().position(|atom| *atom == token) {
if !atoms.contains(&new_token) {
atoms[pos] = new_token;
} else {
atoms.remove(pos);
}
// Step 5.
self.element.set_atomic_tokenlist_attribute(&self.local_name, atoms);
}
Ok(())
}
// https://dom.spec.whatwg.org/#concept-dtl-serialize
fn Stringifier(&self) -> DOMString {
self.element.get_string_attribute(&self.local_name)
}
// check-tidy: no specs after this line
fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
self.Item(index)
}
}
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