script/dom/css/
cssimportrule.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 js::context::JSContext;
9use script_bindings::reflector::reflect_dom_object_with_cx;
10use servo_arc::Arc;
11use style::shared_lock::{Locked, ToCssWithGuard};
12use style::stylesheets::import_rule::ImportLayer;
13use style::stylesheets::{CssRuleType, ImportRule};
14use style_traits::ToCss;
15
16use super::cssrule::{CSSRule, SpecificCSSRule};
17use super::cssstylesheet::CSSStyleSheet;
18use crate::dom::bindings::codegen::Bindings::CSSImportRuleBinding::CSSImportRuleMethods;
19use crate::dom::bindings::root::DomRoot;
20use crate::dom::bindings::str::DOMString;
21use crate::dom::cssgroupingrule::CSSGroupingRule;
22use crate::dom::window::Window;
23
24#[dom_struct]
25pub(crate) struct CSSImportRule {
26    css_rule: CSSRule,
27    #[ignore_malloc_size_of = "Stylo"]
28    #[no_trace]
29    import_rule: RefCell<Arc<Locked<ImportRule>>>,
30}
31
32impl CSSImportRule {
33    fn new_inherited(
34        parent_rule: Option<&CSSGroupingRule>,
35        parent_stylesheet: &CSSStyleSheet,
36        import_rule: Arc<Locked<ImportRule>>,
37    ) -> Self {
38        CSSImportRule {
39            css_rule: CSSRule::new_inherited(parent_rule, parent_stylesheet),
40            import_rule: RefCell::new(import_rule),
41        }
42    }
43
44    pub(crate) fn new(
45        cx: &mut JSContext,
46        window: &Window,
47        parent_rule: Option<&CSSGroupingRule>,
48        parent_stylesheet: &CSSStyleSheet,
49        import_rule: Arc<Locked<ImportRule>>,
50    ) -> DomRoot<Self> {
51        reflect_dom_object_with_cx(
52            Box::new(Self::new_inherited(
53                parent_rule,
54                parent_stylesheet,
55                import_rule,
56            )),
57            window,
58            cx,
59        )
60    }
61
62    pub(crate) fn update_rule(&self, import_rule: Arc<Locked<ImportRule>>) {
63        *self.import_rule.borrow_mut() = import_rule;
64    }
65}
66
67impl SpecificCSSRule for CSSImportRule {
68    fn ty(&self) -> CssRuleType {
69        CssRuleType::Import
70    }
71
72    fn get_css(&self) -> DOMString {
73        let guard = self.css_rule.shared_lock().read();
74        self.import_rule
75            .borrow()
76            .read_with(&guard)
77            .to_css_string(&guard)
78            .into()
79    }
80}
81
82impl CSSImportRuleMethods<crate::DomTypeHolder> for CSSImportRule {
83    /// <https://drafts.csswg.org/cssom-1/#dom-cssimportrule-layername>
84    fn GetLayerName(&self) -> Option<DOMString> {
85        let guard = self.css_rule.shared_lock().read();
86        match &self.import_rule.borrow().read_with(&guard).layer {
87            ImportLayer::None => None,
88            ImportLayer::Anonymous => Some(DOMString::new()),
89            ImportLayer::Named(name) => Some(name.to_css_string().into()),
90        }
91    }
92}
script/dom/css/cssimportrule.rs

script/dom/css/
cssimportrule.rs
