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style: Introduce TNode::is_in_document.

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MozReview-Commit-ID: BrhhoOghtUL
Signed-off-by: Emilio Cobos Álvarez <emilio@crisal.io>
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Emilio Cobos Álvarez 2017-10-27 12:18:27 +02:00
parent 93272f46a5
commit f993693eb2
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3 changed files with 13 additions and 1 deletions
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3
components/style/dom.rs
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@ -191,6 +191,9 @@ pub trait TNode : Sized + Copy + Clone + Debug + NodeInfo + PartialEq {
DomChildren(self.first_child())
}
/// Returns whether the node is attached to a document.
fn is_in_document(&self) -> bool;
/// Iterate over the DOM children of a node, in preorder.
fn dom_descendants(&self) -> DomDescendants<Self> {
DomDescendants {