diff options
Diffstat (limited to 'components/style/dom.rs')
| -rw-r--r-- | components/style/dom.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/components/style/dom.rs b/components/style/dom.rs index 602401530ca..bd201683afe 100644 --- a/components/style/dom.rs +++ b/components/style/dom.rs @@ -281,6 +281,18 @@ pub trait TElement : PartialEq + Debug + Sized + Copy + Clone + ElementExt + Pre /// Get this element as a node. fn as_node(&self) -> Self::ConcreteNode; + /// Returns the depth of this element in the DOM. + fn depth(&self) -> usize { + let mut depth = 0; + let mut curr = *self; + while let Some(parent) = curr.parent_element() { + depth += 1; + curr = parent; + } + + depth + } + /// While doing a reflow, the element at the root has no parent, as far as we're /// concerned. This method returns `None` at the reflow root. fn layout_parent_element(self, reflow_root: OpaqueNode) -> Option<Self> { |