зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.7 KiB
Rust
92 строки
2.7 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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//! A set of author stylesheets and their computed representation, such as the
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//! ones used for ShadowRoot and XBL.
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use context::QuirksMode;
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use dom::TElement;
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#[cfg(feature = "gecko")]
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use gecko_bindings::sugar::ownership::{HasBoxFFI, HasFFI, HasSimpleFFI};
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use invalidation::media_queries::ToMediaListKey;
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use media_queries::Device;
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use shared_lock::SharedRwLockReadGuard;
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use stylesheet_set::AuthorStylesheetSet;
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use stylesheets::StylesheetInDocument;
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use stylist::CascadeData;
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/// A set of author stylesheets and their computed representation, such as the
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/// ones used for ShadowRoot and XBL.
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pub struct AuthorStyles<S>
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where
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S: StylesheetInDocument + PartialEq + 'static,
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{
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/// The sheet collection, which holds the sheet pointers, the invalidations,
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/// and all that stuff.
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pub stylesheets: AuthorStylesheetSet<S>,
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/// The actual cascade data computed from the stylesheets.
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pub data: CascadeData,
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/// The quirks mode of the last stylesheet flush, used because XBL sucks and
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/// we should really fix it, see bug 1406875.
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pub quirks_mode: QuirksMode,
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}
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impl<S> AuthorStyles<S>
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where
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S: StylesheetInDocument + PartialEq + 'static,
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{
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/// Create an empty AuthorStyles.
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#[inline]
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pub fn new() -> Self {
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Self {
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stylesheets: AuthorStylesheetSet::new(),
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data: CascadeData::new(),
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quirks_mode: QuirksMode::NoQuirks,
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}
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}
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/// Flush the pending sheet changes, updating `data` as appropriate.
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///
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/// TODO(emilio): Need a host element and a snapshot map to do invalidation
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/// properly.
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#[inline]
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pub fn flush<E>(
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&mut self,
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device: &Device,
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quirks_mode: QuirksMode,
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guard: &SharedRwLockReadGuard,
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)
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where
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E: TElement,
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S: ToMediaListKey,
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{
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let flusher = self.stylesheets.flush::<E>(
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/* host = */ None,
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/* snapshot_map = */ None,
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);
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if flusher.sheets.dirty() {
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self.quirks_mode = quirks_mode;
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}
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// Ignore OOM.
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let _ = self.data.rebuild(
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device,
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quirks_mode,
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flusher.sheets,
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guard,
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);
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}
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}
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#[cfg(feature = "gecko")]
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unsafe impl HasFFI for AuthorStyles<::gecko::data::GeckoStyleSheet> {
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type FFIType = ::gecko_bindings::bindings::RawServoAuthorStyles;
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}
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#[cfg(feature = "gecko")]
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unsafe impl HasSimpleFFI for AuthorStyles<::gecko::data::GeckoStyleSheet> {}
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#[cfg(feature = "gecko")]
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unsafe impl HasBoxFFI for AuthorStyles<::gecko::data::GeckoStyleSheet> {}
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