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123 lines
4.1 KiB
Rust
123 lines
4.1 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use core::default::Default;
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use cssparser::Parser;
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use dom::bindings::codegen::Bindings::MediaListBinding;
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use dom::bindings::codegen::Bindings::MediaListBinding::MediaListMethods;
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use dom::bindings::js::Root;
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use dom::bindings::reflector::{Reflector, reflect_dom_object};
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use dom::bindings::str::DOMString;
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use dom::window::Window;
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use dom_struct::dom_struct;
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use parking_lot::RwLock;
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use std::sync::Arc;
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use style::media_queries::{MediaQuery, parse_media_query_list};
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use style::media_queries::MediaList as StyleMediaList;
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use style_traits::ToCss;
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#[dom_struct]
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pub struct MediaList {
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reflector_: Reflector,
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#[ignore_heap_size_of = "Arc"]
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media_queries: Arc<RwLock<StyleMediaList>>,
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}
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impl MediaList {
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#[allow(unrooted_must_root)]
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pub fn new_inherited(media_queries: Arc<RwLock<StyleMediaList>>) -> MediaList {
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MediaList {
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reflector_: Reflector::new(),
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media_queries: media_queries,
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}
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}
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#[allow(unrooted_must_root)]
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pub fn new(window: &Window, media_queries: Arc<RwLock<StyleMediaList>>)
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-> Root<MediaList> {
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reflect_dom_object(box MediaList::new_inherited(media_queries),
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window,
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MediaListBinding::Wrap)
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}
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}
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impl MediaListMethods for MediaList {
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// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
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fn MediaText(&self) -> DOMString {
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DOMString::from(self.media_queries.read().to_css_string())
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-mediatext
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fn SetMediaText(&self, value: DOMString) {
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let mut media_queries = self.media_queries.write();
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// Step 2
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if value.is_empty() {
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// Step 1
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*media_queries = StyleMediaList::default();
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return;
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}
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// Step 3
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let mut parser = Parser::new(&value);
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*media_queries = parse_media_query_list(&mut parser);
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-length
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fn Length(&self) -> u32 {
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self.media_queries.read().media_queries.len() as u32
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-item
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fn Item(&self, index: u32) -> Option<DOMString> {
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self.media_queries.read().media_queries.get(index as usize)
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.and_then(|query| {
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let mut s = String::new();
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query.to_css(&mut s).unwrap();
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Some(DOMString::from_string(s))
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})
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-item
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fn IndexedGetter(&self, index: u32) -> Option<DOMString> {
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self.Item(index)
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-appendmedium
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fn AppendMedium(&self, medium: DOMString) {
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// Step 1
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let mut parser = Parser::new(&medium);
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let m = MediaQuery::parse(&mut parser);
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// Step 2
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if let Err(_) = m {
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return;
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}
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// Step 3
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let m_serialized = m.clone().unwrap().to_css_string();
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let any = self.media_queries.read().media_queries.iter()
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.any(|q| m_serialized == q.to_css_string());
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if any {
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return;
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}
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// Step 4
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self.media_queries.write().media_queries.push(m.unwrap());
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}
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// https://drafts.csswg.org/cssom/#dom-medialist-deletemedium
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fn DeleteMedium(&self, medium: DOMString) {
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// Step 1
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let mut parser = Parser::new(&medium);
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let m = MediaQuery::parse(&mut parser);
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// Step 2
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if let Err(_) = m {
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return;
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}
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// Step 3
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let m_serialized = m.unwrap().to_css_string();
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let mut media_list = self.media_queries.write();
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let new_vec = media_list.media_queries.drain(..)
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.filter(|q| m_serialized != q.to_css_string())
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.collect();
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media_list.media_queries = new_vec;
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}
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}
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