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style: Add infrastructure for non-eagerly-cascaded pseudo-elements

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This commit also removes StylistWrapper and uses Arc::get_mut instead.
This commit is contained in:
Emilio Cobos Álvarez 2016-04-22 16:05:41 +02:00
parent 2dacbc6fb3
commit b6402a81d0
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11 changed files with 188 additions and 78 deletions
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15
components/style/context.rs
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@ -16,12 +16,6 @@ use std::collections::HashMap;
use std::sync::mpsc::Sender;
use std::sync::{Arc, Mutex, RwLock};
pub struct StylistWrapper<Impl: SelectorImplExt>(pub *const Stylist<Impl>);
// FIXME(#6569) This implementation is unsound.
#[allow(unsafe_code)]
unsafe impl<Impl: SelectorImplExt> Sync for StylistWrapper<Impl> {}
pub struct SharedStyleContext<Impl: SelectorImplExt> {
/// The current viewport size.
pub viewport_size: Size2D<Au>,
@ -30,9 +24,7 @@ pub struct SharedStyleContext<Impl: SelectorImplExt> {
pub screen_size_changed: bool,
/// The CSS selector stylist.
///
/// FIXME(#2604): Make this no longer an unsafe pointer once we have fast `RWArc`s.
pub stylist: StylistWrapper<Impl>,
pub stylist: Arc<Stylist<Impl>>,
/// Starts at zero, and increased by one every time a layout completes.
/// This can be used to easily check for invalid stale data.
@ -60,10 +52,9 @@ pub struct LocalStyleContext<C: ComputedValues> {
pub style_sharing_candidate_cache: RefCell<StyleSharingCandidateCache<C>>,
}
pub trait StyleContext<'a, Impl: SelectorImplExt, C: ComputedValues> {
pub trait StyleContext<'a, Impl: SelectorImplExt> {
fn shared_context(&self) -> &'a SharedStyleContext<Impl>;
fn local_context(&self) -> &LocalStyleContext<C>;
fn local_context(&self) -> &LocalStyleContext<Impl::ComputedValues>;
}
/// Why we're doing reflow.