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Implement attribute restyle hints.

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Fixes #6942.
This commit is contained in:
Bobby Holley 2015-11-05 09:58:06 -08:00
parent 47744d95ad
commit 7fa7936657
9 changed files with 237 additions and 101 deletions
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24
components/style/selector_matching.rs
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@ -6,7 +6,7 @@ use legacy::PresentationalHintSynthesis;
use media_queries::{Device, MediaType};
use node::TElementAttributes;
use properties::{PropertyDeclaration, PropertyDeclarationBlock};
use restyle_hints::{RestyleHint, StateDependencySet};
use restyle_hints::{ElementSnapshot, RestyleHint, DependencySet};
use selectors::Element;
use selectors::bloom::BloomFilter;
use selectors::matching::DeclarationBlock as GenericDeclarationBlock;
@ -95,8 +95,8 @@ pub struct Stylist {
after_map: PerPseudoElementSelectorMap,
rules_source_order: usize,
// Selector state dependencies used to compute restyle hints.
state_deps: StateDependencySet,
// Selector dependencies used to compute restyle hints.
state_deps: DependencySet,
}
impl Stylist {
@ -112,7 +112,7 @@ impl Stylist {
before_map: PerPseudoElementSelectorMap::new(),
after_map: PerPseudoElementSelectorMap::new(),
rules_source_order: 0,
state_deps: StateDependencySet::new(),
state_deps: DependencySet::new(),
};
// FIXME: Add iso-8859-9.css when the document’s encoding is ISO-8859-8.
stylist
@ -204,12 +204,16 @@ impl Stylist {
self.rules_source_order = rules_source_order;
}
pub fn restyle_hint_for_state_change<E>(&self, element: &E,
current_state: ElementState,
old_state: ElementState)
-> RestyleHint
where E: Element + Clone {
self.state_deps.compute_hint(element, current_state, old_state)
pub fn compute_restyle_hint<E>(&self, element: &E,
snapshot: &ElementSnapshot,
// NB: We need to pass current_state as an argument because
// selectors::Element doesn't provide access to ElementState
// directly, and computing it from the ElementState would be
// more expensive than getting it directly from the caller.
current_state: ElementState)
-> RestyleHint
where E: Element + Clone {
self.state_deps.compute_hint(element, snapshot, current_state)
}
pub fn set_device(&mut self, mut device: Device, stylesheets: &[&Stylesheet]) {