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1327ebd52f
It could be used to have mutable JSVal fields without GC barriers. With the removal of that trait, MutHeap and MutNullableHeap can respectively be replaced by MutJS and MutNullableJS.
69 lines
2.4 KiB
Rust
69 lines
2.4 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 dom::bindings::codegen::Bindings::CSSMediaRuleBinding;
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use dom::bindings::codegen::Bindings::CSSMediaRuleBinding::CSSMediaRuleMethods;
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use dom::bindings::js::{MutNullableJS, Root};
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use dom::bindings::reflector::{DomObject, reflect_dom_object};
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use dom::bindings::str::DOMString;
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use dom::cssgroupingrule::CSSGroupingRule;
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use dom::cssrule::SpecificCSSRule;
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use dom::cssstylesheet::CSSStyleSheet;
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use dom::medialist::MediaList;
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use dom::window::Window;
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use parking_lot::RwLock;
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use std::sync::Arc;
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use style::stylesheets::MediaRule;
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use style_traits::ToCss;
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#[dom_struct]
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pub struct CSSMediaRule {
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cssrule: CSSGroupingRule,
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#[ignore_heap_size_of = "Arc"]
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mediarule: Arc<RwLock<MediaRule>>,
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medialist: MutNullableJS<MediaList>,
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}
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impl CSSMediaRule {
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fn new_inherited(parent_stylesheet: &CSSStyleSheet, mediarule: Arc<RwLock<MediaRule>>)
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-> CSSMediaRule {
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let list = mediarule.read().rules.clone();
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CSSMediaRule {
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cssrule: CSSGroupingRule::new_inherited(parent_stylesheet, list),
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mediarule: mediarule,
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medialist: MutNullableJS::new(None),
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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, parent_stylesheet: &CSSStyleSheet,
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mediarule: Arc<RwLock<MediaRule>>) -> Root<CSSMediaRule> {
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reflect_dom_object(box CSSMediaRule::new_inherited(parent_stylesheet, mediarule),
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window,
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CSSMediaRuleBinding::Wrap)
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}
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fn medialist(&self) -> Root<MediaList> {
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self.medialist.or_init(|| MediaList::new(self.global().as_window(),
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self.mediarule.read().media_queries.clone()))
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}
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}
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impl SpecificCSSRule for CSSMediaRule {
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fn ty(&self) -> u16 {
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use dom::bindings::codegen::Bindings::CSSRuleBinding::CSSRuleConstants;
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CSSRuleConstants::MEDIA_RULE
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}
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fn get_css(&self) -> DOMString {
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self.mediarule.read().to_css_string().into()
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}
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}
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impl CSSMediaRuleMethods for CSSMediaRule {
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// https://drafts.csswg.org/cssom/#dom-cssgroupingrule-media
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fn Media(&self) -> Root<MediaList> {
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self.medialist()
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}
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}
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