script/dom/css/
csskeyframerule.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, SharedRwLockReadGuard, ToCssWithGuard};
12use style::stylesheets::CssRuleType;
13use style::stylesheets::keyframes_rule::Keyframe;
14
15use super::cssrule::{CSSRule, SpecificCSSRule};
16use super::cssstyledeclaration::{CSSModificationAccess, CSSStyleDeclaration, CSSStyleOwner};
17use super::cssstylesheet::CSSStyleSheet;
18use crate::dom::bindings::codegen::Bindings::CSSKeyframeRuleBinding::CSSKeyframeRuleMethods;
19use crate::dom::bindings::inheritance::Castable;
20use crate::dom::bindings::reflector::DomGlobal;
21use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
22use crate::dom::bindings::str::DOMString;
23use crate::dom::window::Window;
24use crate::script_runtime::CanGc;
25
26#[dom_struct]
27pub(crate) struct CSSKeyframeRule {
28    css_rule: CSSRule,
29    #[ignore_malloc_size_of = "Stylo"]
30    #[no_trace]
31    keyframe_rule: RefCell<Arc<Locked<Keyframe>>>,
32    style_declaration: MutNullableDom<CSSStyleDeclaration>,
33}
34
35impl CSSKeyframeRule {
36    fn new_inherited(
37        parent_stylesheet: &CSSStyleSheet,
38        keyframerule: Arc<Locked<Keyframe>>,
39    ) -> CSSKeyframeRule {
40        CSSKeyframeRule {
41            css_rule: CSSRule::new_inherited(parent_stylesheet),
42            keyframe_rule: RefCell::new(keyframerule),
43            style_declaration: Default::default(),
44        }
45    }
46
47    pub(crate) fn new(
48        cx: &mut JSContext,
49        window: &Window,
50        parent_stylesheet: &CSSStyleSheet,
51        keyframerule: Arc<Locked<Keyframe>>,
52    ) -> DomRoot<CSSKeyframeRule> {
53        reflect_dom_object_with_cx(
54            Box::new(CSSKeyframeRule::new_inherited(
55                parent_stylesheet,
56                keyframerule,
57            )),
58            window,
59            cx,
60        )
61    }
62
63    pub(crate) fn update_rule(
64        &self,
65        keyframerule: Arc<Locked<Keyframe>>,
66        guard: &SharedRwLockReadGuard,
67    ) {
68        if let Some(ref style_decl) = self.style_declaration.get() {
69            style_decl.update_property_declaration_block(&keyframerule.read_with(guard).block);
70        }
71        *self.keyframe_rule.borrow_mut() = keyframerule;
72    }
73}
74
75impl CSSKeyframeRuleMethods<crate::DomTypeHolder> for CSSKeyframeRule {
76    /// <https://drafts.csswg.org/css-animations/#dom-csskeyframerule-style>
77    fn Style(&self, cx: &mut JSContext) -> DomRoot<CSSStyleDeclaration> {
78        self.style_declaration.or_init(|| {
79            let guard = self.css_rule.shared_lock().read();
80            CSSStyleDeclaration::new(
81                self.global().as_window(),
82                CSSStyleOwner::CSSRule(
83                    Dom::from_ref(self.upcast()),
84                    RefCell::new(self.keyframe_rule.borrow().read_with(&guard).block.clone()),
85                ),
86                None,
87                CSSModificationAccess::ReadWrite,
88                CanGc::from_cx(cx),
89            )
90        })
91    }
92}
93
94impl SpecificCSSRule for CSSKeyframeRule {
95    fn ty(&self) -> CssRuleType {
96        CssRuleType::Keyframe
97    }
98
99    fn get_css(&self) -> DOMString {
100        let guard = self.css_rule.shared_lock().read();
101        self.keyframe_rule
102            .borrow()
103            .read_with(&guard)
104            .to_css_string(&guard)
105            .into()
106    }
107}
script/dom/css/csskeyframerule.rs

script/dom/css/
csskeyframerule.rs
