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CSSOM bits for @supports: CSSConditionRule and CSSSupportsRule, with conditionText attribute

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This commit is contained in:
Manish Goregaokar 2017-01-03 11:10:12 -08:00
parent 1b0842e228
commit b4a83b6cec
12 changed files with 199 additions and 5 deletions
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24
components/script/dom/cssmediarule.rs
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@ -2,24 +2,26 @@
* 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 cssparser::Parser;
use dom::bindings::codegen::Bindings::CSSMediaRuleBinding;
use dom::bindings::codegen::Bindings::CSSMediaRuleBinding::CSSMediaRuleMethods;
use dom::bindings::js::{MutNullableJS, Root};
use dom::bindings::reflector::{DomObject, reflect_dom_object};
use dom::bindings::str::DOMString;
use dom::cssgroupingrule::CSSGroupingRule;
use dom::cssconditionrule::CSSConditionRule;
use dom::cssrule::SpecificCSSRule;
use dom::cssstylesheet::CSSStyleSheet;
use dom::medialist::MediaList;
use dom::window::Window;
use parking_lot::RwLock;
use std::sync::Arc;
use style::media_queries::parse_media_query_list;
use style::stylesheets::MediaRule;
use style_traits::ToCss;
#[dom_struct]
pub struct CSSMediaRule {
cssrule: CSSGroupingRule,
cssrule: CSSConditionRule,
#[ignore_heap_size_of = "Arc"]
mediarule: Arc<RwLock<MediaRule>>,
medialist: MutNullableJS<MediaList>,
@ -30,7 +32,7 @@ impl CSSMediaRule {
-> CSSMediaRule {
let list = mediarule.read().rules.clone();
CSSMediaRule {
cssrule: CSSGroupingRule::new_inherited(parent_stylesheet, list),
cssrule: CSSConditionRule::new_inherited(parent_stylesheet, list),
mediarule: mediarule,
medialist: MutNullableJS::new(None),
}
@ -48,6 +50,22 @@ impl CSSMediaRule {
self.medialist.or_init(|| MediaList::new(self.global().as_window(),
self.mediarule.read().media_queries.clone()))
}
/// https://drafts.csswg.org/css-conditional-3/#the-cssmediarule-interface
pub fn get_condition_text(&self) -> DOMString {
let rule = self.mediarule.read();
let list = rule.media_queries.read();
list.to_css_string().into()
}
/// https://drafts.csswg.org/css-conditional-3/#the-cssmediarule-interface
pub fn set_condition_text(&self, text: DOMString) {
let mut input = Parser::new(&text);
let new_medialist = parse_media_query_list(&mut input);
let rule = self.mediarule.read();
let mut list = rule.media_queries.write();
*list = new_medialist;
}
}
impl SpecificCSSRule for CSSMediaRule {