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style: Add also a containing_shadow API.

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Emilio Cobos Álvarez 2018-03-03 22:33:29 +01:00
parent 2f0df1b421
commit a19219ec79
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3 changed files with 13 additions and 0 deletions
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4
components/layout_thread/dom_wrapper.rs
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@ -562,6 +562,10 @@ impl<'le> TElement for ServoLayoutElement<'le> {
fn shadow_root(&self) -> Option<ShadowRoot<'le>> {
None
}
fn containing_shadow(&self) -> Option<ShadowRoot<'le>> {
None
}
}
impl<'le> PartialEq for ServoLayoutElement<'le> {

3
components/style/dom.rs
View file

@ -740,6 +740,9 @@ pub trait TElement
/// The shadow root this element is a host of.
fn shadow_root(&self) -> Option<<Self::ConcreteNode as TNode>::ConcreteShadowRoot>;
/// The shadow root which roots the subtree this element is contained in.
fn containing_shadow(&self) -> Option<<Self::ConcreteNode as TNode>::ConcreteShadowRoot>;
/// Return the element which we can use to look up rules in the selector
/// maps.
///

6
components/style/gecko/wrapper.rs
View file

@ -1068,6 +1068,12 @@ impl<'le> TElement for GeckoElement<'le> {
unsafe { slots.mShadowRoot.mRawPtr.as_ref().map(GeckoShadowRoot) }
}
#[inline]
fn containing_shadow(&self) -> Option<GeckoShadowRoot<'le>> {
let slots = self.extended_slots()?;
unsafe { slots._base.mContainingShadow.mRawPtr.as_ref().map(GeckoShadowRoot) }
}
/// Execute `f` for each anonymous content child element (apart from
/// ::before and ::after) whose originating element is `self`.
fn each_anonymous_content_child<F>(&self, mut f: F)