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style: Rewrite the restyle hints code to allow different kinds of element snapshots, and use it for Gecko.

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This is a rewrite for how style interfaces with its consumers in order to allow
different representations for an element snapshot.

This also changes the requirements of an element snapshot, requiring them to
only implement MatchAttr, instead of MatchAttrGeneric. This is important for
stylo since implementing MatchAttrGeneric is way more difficult for us given the
atom limitations. This also allows for more performant implementations in the
Gecko side of things.
This commit is contained in:
Emilio Cobos Álvarez 2016-07-15 16:31:20 -07:00
parent ca9bc23b39
commit 611e611215
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GPG key ID: 056B727BB9C1027C
15 changed files with 565 additions and 246 deletions
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5
components/style/dom.rs
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@ -11,7 +11,7 @@ use data::PrivateStyleData;
use element_state::ElementState;
use properties::{ComputedValues, PropertyDeclaration, PropertyDeclarationBlock};
use refcell::{Ref, RefMut};
use restyle_hints::{ElementSnapshot, RESTYLE_DESCENDANTS, RESTYLE_LATER_SIBLINGS, RESTYLE_SELF, RestyleHint};
use restyle_hints::{RESTYLE_DESCENDANTS, RESTYLE_LATER_SIBLINGS, RESTYLE_SELF, RestyleHint};
use selector_impl::{ElementExt, SelectorImplExt};
use selectors::Element;
use selectors::matching::DeclarationBlock;
@ -192,7 +192,8 @@ pub trait TDocument : Sized + Copy + Clone {
fn root_node(&self) -> Option<Self::ConcreteNode>;
fn drain_modified_elements(&self) -> Vec<(Self::ConcreteElement, ElementSnapshot)>;
fn drain_modified_elements(&self) -> Vec<(Self::ConcreteElement,
<Self::ConcreteElement as ElementExt>::Snapshot)>;
}
pub trait PresentationalHintsSynthetizer {