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<!DOCTYPE html>
<html>
<head>
<title>Highlight priority attribute is mutable</title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/#priorities">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
::highlight(yellow-highlight) {
background-color: yellow;
}
::highlight(green-highlight) {
background-color: green;
}
::highlight(blue-highlight) {
background-color: blue;
}
</style>
</head>
<body>
<span id="green-highlight">Green</span>
<span id="yellow-highlight">Yellow</span>
<span id="blue-highlight">Blue</span>
<span id="yellow-blue-highlight">Yellow-Blue</span>
<script>
test(() => {
let yellowBlue = document.getElementById("yellow-blue-highlight");
let green = document.getElementById("green-highlight");
let highlightGreen = new Highlight(new StaticRange({
startContainer: green.childNodes[0],
startOffset: 0,
endContainer: green.childNodes[0],
endOffset: 6
}));
let yellow = document.getElementById("yellow-highlight");
let highlightYellow = new Highlight(new StaticRange({
startContainer: yellow.childNodes[0],
startOffset: 0,
endContainer: yellow.childNodes[0],
endOffset: 6
}), new StaticRange({
startContainer: yellowBlue.childNodes[0],
startOffset: 0,
endContainer: yellowBlue.childNodes[0],
endOffset: 6
}));
let blue = document.getElementById("blue-highlight");
let highlightBlue = new Highlight(new StaticRange({
startContainer: blue.childNodes[0],
startOffset: 0,
endContainer: blue.childNodes[0],
endOffset: 4
}), new StaticRange({
startContainer: yellowBlue.childNodes[0],
startOffset: 0,
endContainer: yellowBlue.childNodes[0],
endOffset: 11
}));
CSS.highlights.set("yellow-highlight", highlightYellow);
CSS.highlights.set("green-highlight", highlightGreen);
CSS.highlights.set("blue-highlight", highlightBlue);
highlightYellow.priority = 10;
highlightBlue.priority = -1;
assert_equals(highlightYellow.priority, 10);
assert_equals(highlightGreen.priority, 0);
assert_equals(highlightBlue.priority, -1);
});
</script>
</body>
</html>
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