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0cdc1dcf72
Note that `StyleRule` may not have the `CssRules` readily available, they may need to be created. So the previous approach of providing `CSSGroupingRule` with the `CssRules` is no good: it would require writing them in advance, just in case they end up being used. Therefore, this removes the `CSSGroupingRule::rules` field. Instead, they are lazily obtained in `CSSGroupingRule::rulelist()` by downcasting and calling the appropriate method for the subclass. Testing: covered by WPT Fixes: #36245 Signed-off-by: Oriol Brufau <obrufau@igalia.com>
61 lines
2 KiB
Rust
61 lines
2 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use dom_struct::dom_struct;
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use servo_arc::Arc;
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use style::shared_lock::{Locked, SharedRwLock};
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use style::stylesheets::CssRules as StyleCssRules;
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use crate::dom::bindings::codegen::Bindings::CSSConditionRuleBinding::CSSConditionRuleMethods;
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use crate::dom::bindings::inheritance::Castable;
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use crate::dom::bindings::str::DOMString;
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use crate::dom::cssgroupingrule::CSSGroupingRule;
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use crate::dom::cssmediarule::CSSMediaRule;
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use crate::dom::cssstylesheet::CSSStyleSheet;
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use crate::dom::csssupportsrule::CSSSupportsRule;
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#[dom_struct]
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pub(crate) struct CSSConditionRule {
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cssgroupingrule: CSSGroupingRule,
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#[ignore_malloc_size_of = "Arc"]
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#[no_trace]
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rules: Arc<Locked<StyleCssRules>>,
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}
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impl CSSConditionRule {
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pub(crate) fn new_inherited(
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parent_stylesheet: &CSSStyleSheet,
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rules: Arc<Locked<StyleCssRules>>,
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) -> CSSConditionRule {
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CSSConditionRule {
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cssgroupingrule: CSSGroupingRule::new_inherited(parent_stylesheet),
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rules,
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}
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}
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pub(crate) fn parent_stylesheet(&self) -> &CSSStyleSheet {
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self.cssgroupingrule.parent_stylesheet()
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}
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pub(crate) fn shared_lock(&self) -> &SharedRwLock {
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self.cssgroupingrule.shared_lock()
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}
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pub(crate) fn clone_rules(&self) -> Arc<Locked<StyleCssRules>> {
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self.rules.clone()
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}
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}
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impl CSSConditionRuleMethods<crate::DomTypeHolder> for CSSConditionRule {
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/// <https://drafts.csswg.org/css-conditional-3/#dom-cssconditionrule-conditiontext>
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fn ConditionText(&self) -> DOMString {
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if let Some(rule) = self.downcast::<CSSMediaRule>() {
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rule.get_condition_text()
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} else if let Some(rule) = self.downcast::<CSSSupportsRule>() {
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rule.get_condition_text()
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} else {
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unreachable!()
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}
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}
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}
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