servo/components/style/data.rs
Emilio Cobos Álvarez 61e04df266 style: Refactor the per_pseudo map from StyleData to avoid having an option value type.
This make the layout code way clearer.
2016-02-13 16:05:17 +01:00

47 lines
1.4 KiB
Rust

/* 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 http://mozilla.org/MPL/2.0/. */
use properties::ComputedValues;
use selectors::parser::SelectorImpl;
use std::collections::HashMap;
use std::hash::BuildHasherDefault;
use std::sync::Arc;
use std::sync::atomic::AtomicIsize;
pub struct PrivateStyleData<Impl: SelectorImpl> {
/// The results of CSS styling for this node.
pub style: Option<Arc<ComputedValues>>,
/// The results of CSS styling for each pseudo-element (if any).
pub per_pseudo: HashMap<Impl::PseudoElement, Arc<ComputedValues>, BuildHasherDefault<::fnv::FnvHasher>>,
/// Information needed during parallel traversals.
pub parallel: DomParallelInfo,
}
impl<Impl: SelectorImpl> PrivateStyleData<Impl> {
pub fn new() -> PrivateStyleData<Impl> {
PrivateStyleData {
style: None,
per_pseudo: HashMap::with_hasher(Default::default()),
parallel: DomParallelInfo::new(),
}
}
}
/// Information that we need stored in each DOM node.
#[derive(HeapSizeOf)]
pub struct DomParallelInfo {
/// The number of children that still need work done.
pub children_count: AtomicIsize,
}
impl DomParallelInfo {
pub fn new() -> DomParallelInfo {
DomParallelInfo {
children_count: AtomicIsize::new(0),
}
}
}