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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 core::default::Default;
use cssparser::Parser;
use dom::bindings::codegen::Bindings::MediaListBinding;
use dom::bindings::codegen::Bindings::MediaListBinding::MediaListMethods;
use dom::bindings::js::Root;
use dom::bindings::reflector::{Reflector, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::window::Window;
use parking_lot::RwLock;
use std::sync::Arc;
use style::media_queries::{MediaQuery, parse_media_query_list};
use style::media_queries::MediaList as StyleMediaList;
use style_traits::ToCss;
#[dom_struct]
pub struct MediaList {
reflector_: Reflector,
#[ignore_heap_size_of = "Arc"]
media_queries: Arc<RwLock<StyleMediaList>>,
}
impl MediaList {
#[allow(unrooted_must_root)]
pub fn new_inherited(media_queries: Arc<RwLock<StyleMediaList>>) -> MediaList {
MediaList {
reflector_: Reflector::new(),
media_queries: media_queries,
}
}
#[allow(unrooted_must_root)]
pub fn new(window: &Window, media_queries: Arc<RwLock<StyleMediaList>>)
-> Root<MediaList> {
reflect_dom_object(box MediaList::new_inherited(media_queries),
window,
MediaListBinding::Wrap)
}
}
impl MediaListMethods for MediaList {
// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
fn MediaText(&self) -> DOMString {
DOMString::from(self.media_queries.read().to_css_string())
}
// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
fn SetMediaText(&self, value: DOMString) {
let mut media_queries = self.media_queries.write();
// Step 2
if value.is_empty() {
// Step 1
*media_queries = StyleMediaList::default();
return;
}
// Step 3
let mut parser = Parser::new(&value);
*media_queries = parse_media_query_list(&mut parser);
}
// https://drafts.csswg.org/cssom/#dom-medialist-length
fn Length(&self) -> u32 {
self.media_queries.read().media_queries.len() as u32
}
// https://drafts.csswg.org/cssom/#dom-medialist-item
fn Item(&self, index: u32) -> Option<DOMString> {
self.media_queries.read().media_queries.get(index as usize)
.and_then(|query| {
let mut s = String::new();
query.to_css(&mut s).unwrap();
Some(DOMString::from_string(s))
})
}
// https://drafts.csswg.org/cssom/#dom-medialist-item
fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
self.Item(index)
}
// https://drafts.csswg.org/cssom/#dom-medialist-appendmedium
fn AppendMedium(&self, medium: DOMString) {
// Step 1
let mut parser = Parser::new(&medium);
let m = MediaQuery::parse(&mut parser);
// Step 2
if let Err(_) = m {
return;
}
// Step 3
let m_serialized = m.clone().unwrap().to_css_string();
let any = self.media_queries.read().media_queries.iter()
.any(|q| m_serialized == q.to_css_string());
if any {
return;
}
// Step 4
self.media_queries.write().media_queries.push(m.unwrap());
}
// https://drafts.csswg.org/cssom/#dom-medialist-deletemedium
fn DeleteMedium(&self, medium: DOMString) {
// Step 1
let mut parser = Parser::new(&medium);
let m = MediaQuery::parse(&mut parser);
// Step 2
if let Err(_) = m {
return;
}
// Step 3
let m_serialized = m.unwrap().to_css_string();
let mut media_list = self.media_queries.write();
let new_vec = media_list.media_queries.drain(..)
.filter(|q| m_serialized != q.to_css_string())
.collect();
media_list.media_queries = new_vec;
}
}
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