script/dom/
cssmediarule.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use std::cell::RefCell;
6
7use dom_struct::dom_struct;
8use servo_arc::Arc;
9use style::shared_lock::{SharedRwLockReadGuard, ToCssWithGuard};
10use style::stylesheets::{CssRuleType, MediaRule};
11use style_traits::ToCss;
12
13use crate::dom::bindings::codegen::Bindings::CSSMediaRuleBinding::CSSMediaRuleMethods;
14use crate::dom::bindings::reflector::{DomGlobal, reflect_dom_object};
15use crate::dom::bindings::root::{DomRoot, MutNullableDom};
16use crate::dom::bindings::str::DOMString;
17use crate::dom::cssconditionrule::CSSConditionRule;
18use crate::dom::cssrule::SpecificCSSRule;
19use crate::dom::cssstylesheet::CSSStyleSheet;
20use crate::dom::medialist::MediaList;
21use crate::dom::window::Window;
22use crate::script_runtime::CanGc;
23
24#[dom_struct]
25pub(crate) struct CSSMediaRule {
26    cssconditionrule: CSSConditionRule,
27    #[ignore_malloc_size_of = "Arc"]
28    #[no_trace]
29    mediarule: RefCell<Arc<MediaRule>>,
30    medialist: MutNullableDom<MediaList>,
31}
32
33impl CSSMediaRule {
34    fn new_inherited(parent_stylesheet: &CSSStyleSheet, mediarule: Arc<MediaRule>) -> CSSMediaRule {
35        let list = mediarule.rules.clone();
36        CSSMediaRule {
37            cssconditionrule: CSSConditionRule::new_inherited(parent_stylesheet, list),
38            mediarule: RefCell::new(mediarule),
39            medialist: MutNullableDom::new(None),
40        }
41    }
42
43    #[cfg_attr(crown, allow(crown::unrooted_must_root))]
44    pub(crate) fn new(
45        window: &Window,
46        parent_stylesheet: &CSSStyleSheet,
47        mediarule: Arc<MediaRule>,
48        can_gc: CanGc,
49    ) -> DomRoot<CSSMediaRule> {
50        reflect_dom_object(
51            Box::new(CSSMediaRule::new_inherited(parent_stylesheet, mediarule)),
52            window,
53            can_gc,
54        )
55    }
56
57    fn medialist(&self, can_gc: CanGc) -> DomRoot<MediaList> {
58        self.medialist.or_init(|| {
59            MediaList::new(
60                self.global().as_window(),
61                self.cssconditionrule.parent_stylesheet(),
62                self.mediarule.borrow().media_queries.clone(),
63                can_gc,
64            )
65        })
66    }
67
68    /// <https://drafts.csswg.org/css-conditional-3/#the-cssmediarule-interface>
69    pub(crate) fn get_condition_text(&self) -> DOMString {
70        let guard = self.cssconditionrule.shared_lock().read();
71        self.mediarule
72            .borrow()
73            .media_queries
74            .read_with(&guard)
75            .to_css_string()
76            .into()
77    }
78
79    pub(crate) fn update_rule(&self, mediarule: Arc<MediaRule>, guard: &SharedRwLockReadGuard) {
80        self.cssconditionrule
81            .update_rules(mediarule.rules.clone(), guard);
82        if let Some(medialist) = self.medialist.get() {
83            medialist.update_media_list(mediarule.media_queries.clone());
84        }
85        *self.mediarule.borrow_mut() = mediarule;
86    }
87}
88
89impl SpecificCSSRule for CSSMediaRule {
90    fn ty(&self) -> CssRuleType {
91        CssRuleType::Media
92    }
93
94    fn get_css(&self) -> DOMString {
95        let guard = self.cssconditionrule.shared_lock().read();
96        self.mediarule.borrow().to_css_string(&guard).into()
97    }
98}
99
100impl CSSMediaRuleMethods<crate::DomTypeHolder> for CSSMediaRule {
101    // https://drafts.csswg.org/cssom/#dom-cssgroupingrule-media
102    fn Media(&self, can_gc: CanGc) -> DomRoot<MediaList> {
103        self.medialist(can_gc)
104    }
105}
script/dom/cssmediarule.rs

script/dom/
cssmediarule.rs
