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Implement Stringifier for Range

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This commit is contained in:
Keith Yeung 2016-02-28 12:53:10 -05:00
parent ae67ae9cdb
commit b32e859c3a
5 changed files with 95 additions and 5 deletions
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45
components/script/dom/range.rs
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@ -118,7 +118,7 @@ impl Range {
// Step 11.
let contained_children: Vec<Root<Node>> =
common_ancestor.children().filter(|n| Range::contains(self, n)).collect();
common_ancestor.children().filter(|n| self.contains(n)).collect();
// Step 12.
if contained_children.iter().any(|n| n.is_doctype()) {
@ -850,6 +850,49 @@ impl RangeMethods for Range {
// Step 7.
self.SelectNode(new_parent)
}
// https://dom.spec.whatwg.org/#dom-range-stringifier
fn Stringifier(&self) -> DOMString {
let start_node = self.StartContainer();
let end_node = self.EndContainer();
// Step 1.
let mut s = DOMString::new();
if let Some(text_node) = start_node.downcast::<Text>() {
let char_data = text_node.upcast::<CharacterData>();
// Step 2.
if start_node == end_node {
return char_data.SubstringData(self.StartOffset(),
self.EndOffset() - self.StartOffset()).unwrap();
}
// Step 3.
s.push_str(&*char_data.SubstringData(self.StartOffset(),
char_data.Length() - self.StartOffset()).unwrap());
}
// Step 4.
let ancestor = self.CommonAncestorContainer();
let mut iter = start_node.following_nodes(ancestor.r())
.filter_map(Root::downcast::<Text>);
while let Some(child) = iter.next() {
if self.contains(child.upcast()) {
s.push_str(&*child.upcast::<CharacterData>().Data());
}
}
// Step 5.
if let Some(text_node) = end_node.downcast::<Text>() {
let char_data = text_node.upcast::<CharacterData>();
s.push_str(&*char_data.SubstringData(0, self.EndOffset()).unwrap());
}
// Step 6.
s
}
}
#[derive(JSTraceable)]