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style: Add infrastructure to match :host.

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Emilio Cobos Álvarez 2018-03-08 22:03:42 +01:00
parent 1654f297ca
commit 9fa2618197
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9 changed files with 159 additions and 41 deletions
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29
components/style/invalidation/element/element_wrapper.rs
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@ -271,28 +271,37 @@ where
}
fn parent_element(&self) -> Option<Self> {
self.element.parent_element()
.map(|e| ElementWrapper::new(e, self.snapshot_map))
let parent = self.element.parent_element()?;
Some(Self::new(parent, self.snapshot_map))
}
fn parent_node_is_shadow_root(&self) -> bool {
self.element.parent_node_is_shadow_root()
}
fn containing_shadow_host(&self) -> Option<Self> {
let host = self.element.containing_shadow_host()?;
Some(Self::new(host, self.snapshot_map))
}
fn first_child_element(&self) -> Option<Self> {
self.element.first_child_element()
.map(|e| ElementWrapper::new(e, self.snapshot_map))
let child = self.element.first_child_element()?;
Some(Self::new(child, self.snapshot_map))
}
fn last_child_element(&self) -> Option<Self> {
self.element.last_child_element()
.map(|e| ElementWrapper::new(e, self.snapshot_map))
let child = self.element.last_child_element()?;
Some(Self::new(child, self.snapshot_map))
}
fn prev_sibling_element(&self) -> Option<Self> {
self.element.prev_sibling_element()
.map(|e| ElementWrapper::new(e, self.snapshot_map))
let sibling = self.element.prev_sibling_element()?;
Some(Self::new(sibling, self.snapshot_map))
}
fn next_sibling_element(&self) -> Option<Self> {
self.element.next_sibling_element()
.map(|e| ElementWrapper::new(e, self.snapshot_map))
let sibling = self.element.next_sibling_element()?;
Some(Self::new(sibling, self.snapshot_map))
}
#[inline]