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Refactor style to be completely backend-independent

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This commit refactors the style crate to be completely independent of
the actual implementation and pseudo-elements supported.

This also adds a gecko backend which introduces parsing for the
anonymous box pseudo-elements[1], although there's still no way of
querying them.

https://mxr.mozilla.org/mozilla-central/source/layout/style/nsCSSAnonBoxList.h
This commit is contained in:
Emilio Cobos Álvarez 2016-02-08 02:53:22 +01:00
parent a164176876
commit dd503dfacb
41 changed files with 767 additions and 310 deletions
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18
components/style/data.rs
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@ -3,29 +3,27 @@
* 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::sync::Arc;
use std::sync::atomic::AtomicIsize;
pub struct PrivateStyleData {
pub struct PrivateStyleData<Impl: SelectorImpl> {
/// The results of CSS styling for this node.
pub style: Option<Arc<ComputedValues>>,
/// The results of CSS styling for this node's `before` pseudo-element, if any.
pub before_style: Option<Arc<ComputedValues>>,
/// The results of CSS styling for this node's `after` pseudo-element, if any.
pub after_style: Option<Arc<ComputedValues>>,
/// The results of CSS styling for each pseudo-element (if any).
pub per_pseudo: HashMap<Impl::PseudoElement, Option<Arc<ComputedValues>>>,
/// Information needed during parallel traversals.
pub parallel: DomParallelInfo,
}
impl PrivateStyleData {
pub fn new() -> PrivateStyleData {
impl<Impl: SelectorImpl> PrivateStyleData<Impl> {
pub fn new() -> PrivateStyleData<Impl> {
PrivateStyleData {
style: None,
before_style: None,
after_style: None,
per_pseudo: HashMap::new(),
parallel: DomParallelInfo::new(),
}
}