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style: Make Element::id not clone the attribute.

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Emilio Cobos Álvarez 2018-02-24 21:49:43 +01:00
parent 98c9292ecb
commit f2efd04a5d
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10 changed files with 46 additions and 37 deletions
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10
components/style/invalidation/element/element_wrapper.rs
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@ -5,7 +5,7 @@
//! A wrapper over an element and a snapshot, that allows us to selector-match
//! against a past state of the element.
use {Atom, CaseSensitivityExt, LocalName, Namespace};
use {Atom, CaseSensitivityExt, LocalName, Namespace, WeakAtom};
use dom::TElement;
use element_state::ElementState;
use selector_parser::{NonTSPseudoClass, PseudoElement, SelectorImpl, Snapshot, SnapshotMap, AttrValue};
@ -44,7 +44,7 @@ pub trait ElementSnapshot : Sized {
/// The ID attribute per this snapshot. Should only be called if
/// `has_attrs()` returns true.
fn id_attr(&self) -> Option<Atom>;
fn id_attr(&self) -> Option<&WeakAtom>;
/// Whether this snapshot contains the class `name`. Should only be called
/// if `has_attrs()` returns true.
@ -53,7 +53,8 @@ pub trait ElementSnapshot : Sized {
/// A callback that should be called for each class of the snapshot. Should
/// only be called if `has_attrs()` returns true.
fn each_class<F>(&self, F)
where F: FnMut(&Atom);
where
F: FnMut(&Atom);
/// The `xml:lang=""` or `lang=""` attribute value per this snapshot.
fn lang_attr(&self) -> Option<AttrValue>;
@ -63,7 +64,8 @@ pub trait ElementSnapshot : Sized {
/// selector-match against a past state of the element.
#[derive(Clone)]
pub struct ElementWrapper<'a, E>
where E: TElement,
where
E: TElement,
{
element: E,
cached_snapshot: Cell<Option<&'a Snapshot>>,