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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
View file

@ -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)]

2
components/script/dom/webidls/Range.webidl
View file

@ -72,7 +72,7 @@ interface Range {
[Pure]
boolean intersectsNode(Node node);
// stringifier;
stringifier;
};
// https://dvcs.w3.org/hg/innerhtml/raw-file/tip/index.html#extensions-to-the-range-interface

6
tests/wpt/metadata/MANIFEST.json
View file

@ -34520,6 +34520,12 @@
"url": "/dom/lists/DOMTokenList-value.html"
}
],
"dom/ranges/Range-stringifier.html": [
{
"path": "dom/ranges/Range-stringifier.html",
"url": "/dom/ranges/Range-stringifier.html"
}
],
"html/webappapis/scripting/events/event-handler-processing-algorithm.html": [
{
"path": "html/webappapis/scripting/events/event-handler-processing-algorithm.html",

3
tests/wpt/metadata/dom/interfaces.html.ini
View file

@ -129,9 +129,6 @@
[Element interface: calling queryAll(DOMString) on element with too few arguments must throw TypeError]
expected: FAIL
[Range interface: stringifier]
expected: FAIL
[DOMSettableTokenList interface: existence and properties of interface prototype object]
expected: FAIL

44
tests/wpt/web-platform-tests/dom/ranges/Range-stringifier.html Normal file
View file

@ -0,0 +1,44 @@
<!doctype html>
<meta charset="utf-8">
<title>Range stringifier</title>
<link rel="author" title="KiChjang" href="mailto:kungfukeith11@gmail.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=test>Test div</div>
<div id=another>Another div</div>
<div id=last>Last div</div>
<div id=log></div>
<script>
test(function() {
var r = new Range();
var testDiv = document.getElementById("test");
test(function() {
r.selectNodeContents(testDiv);
assert_equals(r.collapsed, false);
assert_equals(r.toString(), testDiv.textContent);
}, "Node contents of a single div");
var textNode = testDiv.childNodes[0];
test(function() {
r.setStart(textNode, 5);
r.setEnd(textNode, 7);
assert_equals(r.collapsed, false);
assert_equals(r.toString(), "di");
}, "Text node with offsets");
var anotherDiv = document.getElementById("another");
test(function() {
r.setStart(testDiv, 0);
r.setEnd(anotherDiv, 0);
assert_equals(r.toString(), "Test div\n");
}, "Two nodes, each with a text node");
var lastDiv = document.getElementById("last");
var lastText = lastDiv.childNodes[0];
test(function() {
r.setStart(textNode, 5);
r.setEnd(lastText, 4);
assert_equals(r.toString(), "div\nAnother div\nLast");
}, "Three nodes with start offset and end offset on text nodes");
});
</script>