script/dom/
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 servo_arc::Arc;
9use style::shared_lock::{Locked, SharedRwLockReadGuard, ToCssWithGuard};
10use style::stylesheets::CssRuleType;
11use style::stylesheets::keyframes_rule::Keyframe;
12
13use crate::dom::bindings::codegen::Bindings::CSSKeyframeRuleBinding::CSSKeyframeRuleMethods;
14use crate::dom::bindings::inheritance::Castable;
15use crate::dom::bindings::reflector::{DomGlobal, reflect_dom_object};
16use crate::dom::bindings::root::{Dom, DomRoot, MutNullableDom};
17use crate::dom::bindings::str::DOMString;
18use crate::dom::cssrule::{CSSRule, SpecificCSSRule};
19use crate::dom::cssstyledeclaration::{CSSModificationAccess, CSSStyleDeclaration, CSSStyleOwner};
20use crate::dom::cssstylesheet::CSSStyleSheet;
21use crate::dom::window::Window;
22use crate::script_runtime::CanGc;
23
24#[dom_struct]
25pub(crate) struct CSSKeyframeRule {
26    cssrule: CSSRule,
27    #[ignore_malloc_size_of = "Arc"]
28    #[no_trace]
29    keyframerule: RefCell<Arc<Locked<Keyframe>>>,
30    style_decl: MutNullableDom<CSSStyleDeclaration>,
31}
32
33impl CSSKeyframeRule {
34    fn new_inherited(
35        parent_stylesheet: &CSSStyleSheet,
36        keyframerule: Arc<Locked<Keyframe>>,
37    ) -> CSSKeyframeRule {
38        CSSKeyframeRule {
39            cssrule: CSSRule::new_inherited(parent_stylesheet),
40            keyframerule: RefCell::new(keyframerule),
41            style_decl: Default::default(),
42        }
43    }
44
45    #[cfg_attr(crown, allow(crown::unrooted_must_root))]
46    pub(crate) fn new(
47        window: &Window,
48        parent_stylesheet: &CSSStyleSheet,
49        keyframerule: Arc<Locked<Keyframe>>,
50        can_gc: CanGc,
51    ) -> DomRoot<CSSKeyframeRule> {
52        reflect_dom_object(
53            Box::new(CSSKeyframeRule::new_inherited(
54                parent_stylesheet,
55                keyframerule,
56            )),
57            window,
58            can_gc,
59        )
60    }
61
62    pub(crate) fn update_rule(
63        &self,
64        keyframerule: Arc<Locked<Keyframe>>,
65        guard: &SharedRwLockReadGuard,
66    ) {
67        if let Some(ref style_decl) = self.style_decl.get() {
68            style_decl.update_property_declaration_block(&keyframerule.read_with(guard).block);
69        }
70        *self.keyframerule.borrow_mut() = keyframerule;
71    }
72}
73
74impl CSSKeyframeRuleMethods<crate::DomTypeHolder> for CSSKeyframeRule {
75    // https://drafts.csswg.org/css-animations/#dom-csskeyframerule-style
76    fn Style(&self, can_gc: CanGc) -> DomRoot<CSSStyleDeclaration> {
77        self.style_decl.or_init(|| {
78            let guard = self.cssrule.shared_lock().read();
79            CSSStyleDeclaration::new(
80                self.global().as_window(),
81                CSSStyleOwner::CSSRule(
82                    Dom::from_ref(self.upcast()),
83                    RefCell::new(self.keyframerule.borrow().read_with(&guard).block.clone()),
84                ),
85                None,
86                CSSModificationAccess::ReadWrite,
87                can_gc,
88            )
89        })
90    }
91}
92
93impl SpecificCSSRule for CSSKeyframeRule {
94    fn ty(&self) -> CssRuleType {
95        CssRuleType::Keyframe
96    }
97
98    fn get_css(&self) -> DOMString {
99        let guard = self.cssrule.shared_lock().read();
100        self.keyframerule
101            .borrow()
102            .read_with(&guard)
103            .to_css_string(&guard)
104            .into()
105    }
106}
script/dom/csskeyframerule.rs

script/dom/
csskeyframerule.rs
