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c99bcdd4b8
This was generated with: ./mach cargo fmt --package selectors && ./mach cargo fmt --package servo_arc && ./mach cargo fmt --package style Using rustfmt 0.4.1-nightly (a4462d1 2018-03-26)
71 lines
2.5 KiB
Rust
71 lines
2.5 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 http://mozilla.org/MPL/2.0/. */
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//! An [`@media`][media] urle.
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//!
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//! [media]: https://drafts.csswg.org/css-conditional/#at-ruledef-media
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use cssparser::SourceLocation;
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#[cfg(feature = "gecko")]
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use malloc_size_of::{MallocSizeOfOps, MallocUnconditionalShallowSizeOf};
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use media_queries::MediaList;
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use servo_arc::Arc;
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use shared_lock::{DeepCloneParams, DeepCloneWithLock, Locked};
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use shared_lock::{SharedRwLock, SharedRwLockReadGuard, ToCssWithGuard};
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use std::fmt::{self, Write};
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use str::CssStringWriter;
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use style_traits::{CssWriter, ToCss};
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use stylesheets::CssRules;
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/// An [`@media`][media] urle.
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///
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/// [media]: https://drafts.csswg.org/css-conditional/#at-ruledef-media
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#[derive(Debug)]
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pub struct MediaRule {
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/// The list of media queries used by this media rule.
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pub media_queries: Arc<Locked<MediaList>>,
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/// The nested rules to this media rule.
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pub rules: Arc<Locked<CssRules>>,
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/// The source position where this media rule was found.
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pub source_location: SourceLocation,
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}
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impl MediaRule {
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/// Measure heap usage.
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#[cfg(feature = "gecko")]
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pub fn size_of(&self, guard: &SharedRwLockReadGuard, ops: &mut MallocSizeOfOps) -> usize {
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// Measurement of other fields may be added later.
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self.rules.unconditional_shallow_size_of(ops) +
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self.rules.read_with(guard).size_of(guard, ops)
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}
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}
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impl ToCssWithGuard for MediaRule {
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// Serialization of MediaRule is not specced.
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// https://drafts.csswg.org/cssom/#serialize-a-css-rule CSSMediaRule
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fn to_css(&self, guard: &SharedRwLockReadGuard, dest: &mut CssStringWriter) -> fmt::Result {
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dest.write_str("@media ")?;
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self.media_queries
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.read_with(guard)
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.to_css(&mut CssWriter::new(dest))?;
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self.rules.read_with(guard).to_css_block(guard, dest)
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}
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}
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impl DeepCloneWithLock for MediaRule {
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fn deep_clone_with_lock(
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&self,
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lock: &SharedRwLock,
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guard: &SharedRwLockReadGuard,
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params: &DeepCloneParams,
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) -> Self {
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let media_queries = self.media_queries.read_with(guard);
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let rules = self.rules.read_with(guard);
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MediaRule {
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media_queries: Arc::new(lock.wrap(media_queries.clone())),
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rules: Arc::new(lock.wrap(rules.deep_clone_with_lock(lock, guard, params))),
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source_location: self.source_location.clone(),
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}
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}
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}
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