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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
//! A set of author stylesheets and their computed representation, such as the
//! ones used for ShadowRoot.
use crate::context::QuirksMode;
use crate::dom::TElement;
#[cfg(feature = "gecko")]
use crate::gecko_bindings::sugar::ownership::{HasBoxFFI, HasFFI, HasSimpleFFI};
use crate::invalidation::media_queries::ToMediaListKey;
use crate::media_queries::Device;
use crate::shared_lock::SharedRwLockReadGuard;
use crate::stylesheet_set::AuthorStylesheetSet;
use crate::stylesheets::StylesheetInDocument;
use crate::stylist::CascadeData;
/// A set of author stylesheets and their computed representation, such as the
/// ones used for ShadowRoot.
#[derive(MallocSizeOf)]
pub struct AuthorStyles<S>
where
S: StylesheetInDocument + PartialEq + 'static,
{
/// The sheet collection, which holds the sheet pointers, the invalidations,
/// and all that stuff.
pub stylesheets: AuthorStylesheetSet<S>,
/// The actual cascade data computed from the stylesheets.
pub data: CascadeData,
}
impl<S> AuthorStyles<S>
where
S: StylesheetInDocument + PartialEq + 'static,
{
/// Create an empty AuthorStyles.
#[inline]
pub fn new() -> Self {
Self {
stylesheets: AuthorStylesheetSet::new(),
data: CascadeData::new(),
}
}
/// Flush the pending sheet changes, updating `data` as appropriate.
///
/// TODO(emilio): Need a host element and a snapshot map to do invalidation
/// properly.
#[inline]
pub fn flush<E>(
&mut self,
device: &Device,
quirks_mode: QuirksMode,
guard: &SharedRwLockReadGuard,
) where
E: TElement,
S: ToMediaListKey,
{
let flusher = self
.stylesheets
.flush::<E>(/* host = */ None, /* snapshot_map = */ None);
// Ignore OOM.
let _ = self
.data
.rebuild(device, quirks_mode, flusher.sheets, guard);
}
}
#[cfg(feature = "gecko")]
unsafe impl HasFFI for AuthorStyles<crate::gecko::data::GeckoStyleSheet> {
type FFIType = crate::gecko_bindings::structs::RawServoAuthorStyles;
}
#[cfg(feature = "gecko")]
unsafe impl HasSimpleFFI for AuthorStyles<crate::gecko::data::GeckoStyleSheet> {}
#[cfg(feature = "gecko")]
unsafe impl HasBoxFFI for AuthorStyles<crate::gecko::data::GeckoStyleSheet> {}