<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Dynamic childlist of MathML elements</title>
<script src="/mathml/support/mathml-fragments.js"></script>
<link rel="help" href="https://w3c.github.io/mathml-core/#adjust-space-around-content-mpadded">
<link rel="help" href="https://w3c.github.io/mathml-core/#dom-and-javascript">
<link rel="help" href="https://w3c.github.io/mathml-core/#fractions-mfrac">
<link rel="help" href="https://w3c.github.io/mathml-core/#prescripts-and-tensor-indices-mmultiscripts">
<link rel="help" href="https://w3c.github.io/mathml-core/#radicals-msqrt-mroot">
<link rel="help" href="https://w3c.github.io/mathml-core/#space-mspace">
<link rel="help" href="https://w3c.github.io/mathml-core/#subscripts-and-superscripts-msub-msup-msubsup">
<link rel="help" href="https://w3c.github.io/mathml-core/#underscripts-and-overscripts-munder-mover-munderover">
<meta name="assert" content="Dynamically modify DOM tree of some MathML elements by adding or removing children.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/layout-comparison.js"></script>
<script>
function forceNumberOfChildren(element, count) {
while (element.children.length > count)
element.removeChild(element.lastElementChild);
for (let i = element.children.length; i < count; i++) {
if (element.tagName === "mmultiscripts" && i === 5) {
element.appendChild(FragmentHelper.createElement("mprescripts"));
} else {
let mspace = FragmentHelper.createElement("mspace");
mspace.setAttribute("width", `10px`);
mspace.setAttribute("height", `${10*(i+1)}px`);
mspace.setAttribute("style", `background: black;`);
element.appendChild(mspace);
}
}
}
setup({ explicit_done: true });
window.addEventListener("load", function() {
// force initial layout so we're sure what we're testing against
document.documentElement.getBoundingClientRect();
let reference = document.getElementById("reference");
Array.from(document.querySelectorAll("[data-title]")).forEach(element => {
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
let reference = document.getElementById(`${element.getAttribute("data-reference")}`);
forceNumberOfChildren(element, reference.children.length);
const epsilon = 1;
if (element.tagName == "mspace") {
compareSize(element, reference, epsilon);
childrenHaveEmptyBoundingClientRects(element);
childrenHaveEmptyBoundingClientRects(reference);
} else {
compareLayout(element, reference, epsilon);
}
}, `${element.getAttribute("data-title")}`);
});
done();
});
</script>
</head>
<body>
<div id="log"></div>
<p>
<math>
<mfrac id="mfrac-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</mfrac>
<mfrac id="mfrac-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mfrac>
<mfrac id="mfrac-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mfrac>
</math>
</p>
<p>
<math>
<mfrac data-reference="mfrac-reference-2" data-title="Adding missing children to mfrac">
</mfrac>
</math>
</p>
<p>
<math>
<mfrac data-reference="mfrac-reference-1" data-title="Removing child from valid mfrac">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mfrac>
</math>
</p>
<p>
<math>
<mfrac data-reference="mfrac-reference-3" data-title="Adding child to valid mfrac">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mfrac>
</math>
</p>
<p>
<math>
<mfrac data-reference="mfrac-reference-2" data-title="Removing extra child from mfrac">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mfrac>
</math>
</p>
<hr/>
<p>
<math>
<munder id="munder-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</munder>
<munder id="munder-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</munder>
<munder id="munder-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</munder>
</math>
</p>
<p>
<math>
<munder data-reference="munder-reference-2" data-title="Adding missing children to munder">
</munder>
</math>
</p>
<p>
<math>
<munder data-reference="munder-reference-1" data-title="Removing child from valid munder">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</munder>
</math>
</p>
<p>
<math>
<munder data-reference="munder-reference-3" data-title="Adding child to valid munder">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</munder>
</math>
</p>
<p>
<math>
<munder data-reference="munder-reference-2" data-title="Removing extra child from munder">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</munder>
</math>
</p>
<hr/>
<p>
<math>
<mover id="mover-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</mover>
<mover id="mover-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mover>
<mover id="mover-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mover>
</math>
</p>
<p>
<math>
<mover data-reference="mover-reference-2" data-title="Adding missing children to mover">
</mover>
</math>
</p>
<p>
<math>
<mover data-reference="mover-reference-1" data-title="Removing child from valid mover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mover>
</math>
</p>
<p>
<math>
<mover data-reference="mover-reference-3" data-title="Adding child to valid mover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mover>
</math>
</p>
<p>
<math>
<mover data-reference="mover-reference-2" data-title="Removing extra child from mover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mover>
</math>
</p>
<hr/>
<p>
<math>
<munderover id="munderover-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</munderover>
<munderover id="munderover-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</munderover>
<munderover id="munderover-reference-4">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
</munderover>
</math>
</p>
<p>
<math>
<munderover data-reference="munderover-reference-3" data-title="Adding missing children to munderover">
</munderover>
</math>
</p>
<p>
<math>
<munderover data-reference="munderover-reference-2" data-title="Removing child from valid munderover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</munderover>
</math>
</p>
<p>
<math>
<munderover data-reference="munderover-reference-4" data-title="Adding child to valid munderover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</munderover>
</math>
</p>
<p>
<math>
<munderover data-reference="munderover-reference-3" data-title="Removing extra child from munderover">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
</munderover>
</math>
</p>
<hr/>
<p>
<math>
<msub id="msub-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</msub>
<msub id="msub-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msub>
<msub id="msub-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msub>
</math>
</p>
<p>
<math>
<msub data-reference="msub-reference-2" data-title="Adding missing children to msub">
</msub>
</math>
</p>
<p>
<math>
<msub data-reference="msub-reference-1" data-title="Removing child from valid msub">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msub>
</math>
</p>
<p>
<math>
<msub data-reference="msub-reference-3" data-title="Adding child to valid msub">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msub>
</math>
</p>
<p>
<math>
<msub data-reference="msub-reference-2" data-title="Removing extra child from msub">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msub>
</math>
</p>
<hr/>
<p>
<math>
<msup id="msup-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</msup>
<msup id="msup-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msup>
<msup id="msup-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msup>
</math>
</p>
<p>
<math>
<msup data-reference="msup-reference-2" data-title="Adding missing children to msup">
</msup>
</math>
</p>
<p>
<math>
<msup data-reference="msup-reference-1" data-title="Removing child from valid msup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msup>
</math>
</p>
<p>
<math>
<msup data-reference="msup-reference-3" data-title="Adding child to valid msup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msup>
</math>
</p>
<p>
<math>
<msup data-reference="msup-reference-2" data-title="Removing extra child from msup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msup>
</math>
</p>
<hr/>
<p>
<math>
<msubsup id="msubsup-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msubsup>
<msubsup id="msubsup-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msubsup>
<msubsup id="msubsup-reference-4">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
</msubsup>
</math>
</p>
<p>
<math>
<msubsup data-reference="msubsup-reference-3" data-title="Adding missing children to msubsup">
</msubsup>
</math>
</p>
<p>
<math>
<msubsup data-reference="msubsup-reference-2" data-title="Removing child from valid msubsup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msubsup>
</math>
</p>
<p>
<math>
<msubsup data-reference="msubsup-reference-4" data-title="Adding child to valid msubsup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msubsup>
</math>
</p>
<p>
<math>
<msubsup data-reference="msubsup-reference-3" data-title="Removing extra child from msubsup">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
</msubsup>
</math>
</p>
<hr/>
<p>
<math>
<mroot id="mroot-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</mroot>
<mroot id="mroot-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mroot>
<mroot id="mroot-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mroot>
</math>
</p>
<p>
<math>
<mroot data-reference="mroot-reference-2" data-title="Adding missing children to mroot">
</mroot>
</math>
</p>
<p>
<math>
<mroot data-reference="mroot-reference-1" data-title="Removing child from valid mroot">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mroot>
</math>
</p>
<p>
<math>
<mroot data-reference="mroot-reference-3" data-title="Adding child to valid mroot">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mroot>
</math>
</p>
<p>
<math>
<mroot data-reference="mroot-reference-2" data-title="Removing extra child from mroot">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mroot>
</math>
</p>
<hr/>
<p>
<math>
<msqrt id="msqrt-reference-0">
</msqrt>
<msqrt id="msqrt-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</msqrt>
</math>
</p>
<p>
<math>
<msqrt data-reference="msqrt-reference-0" data-title="Removing children from msqrt">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</msqrt>
</math>
</p>
<p>
<math>
<msqrt data-reference="msqrt-reference-2" data-title="Adding children to msqrt">
<mspace width="10px" height="10px" style="background: black;"/>
</msqrt>
</math>
</p>
<hr/>
<p>
<math>
<mpadded id="mpadded-reference-0">
</mpadded>
<mpadded id="mpadded-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mpadded>
</math>
</p>
<p>
<math>
<mpadded data-reference="mpadded-reference-0" data-title="Removing children from mpadded">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mpadded>
</math>
</p>
<p>
<math>
<mpadded data-reference="mpadded-reference-2" data-title="Adding children to mpadded">
<mspace width="10px" height="10px" style="background: black;"/>
</mpadded>
</math>
</p>
<hr/>
<p>
<math>
<mspace id="mspace-reference-0" width="30px" height="70px" style="background: blue">
</mspace>
<mspace id="mspace-reference-2" width="30px" height="70px" style="background: green">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mspace>
</math>
</p>
<p>
<math>
<mspace data-reference="mspace-reference-0" data-title="Removing children from mspace" width="30px" height="70px" style="background: lightblue">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mspace>
</math>
</p>
<p>
<math>
<mspace data-reference="mspace-reference-2" data-title="Adding children to mspace" width="30px" height="70px" style="background: lightgreen">
<mspace width="10px" height="10px" style="background: black;"/>
</mspace>
</math>
</p>
<hr/>
<p>
<math>
<mmultiscripts id="mmultiscripts-reference-0">
</mmultiscripts>
<mmultiscripts id="mmultiscripts-reference-1">
<mspace width="10px" height="10px" style="background: black;"/>
</mmultiscripts>
<mmultiscripts id="mmultiscripts-reference-2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
</mmultiscripts>
<mmultiscripts id="mmultiscripts-reference-3">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
<mmultiscripts id="mmultiscripts-reference-6">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
<mspace width="10px" height="50px" style="background: black;"/>
<mprescripts/>
</mmultiscripts>
<mmultiscripts id="mmultiscripts-reference-8">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
<mspace width="10px" height="40px" style="background: black;"/>
<mspace width="10px" height="50px" style="background: black;"/>
<mprescripts/>
<mspace width="10px" height="70px" style="background: black;"/>
<mspace width="10px" height="80px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-0" data-title="multiscripts child count from 3 to 0">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-1" data-title="multiscripts child count from 3 to 1">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-2" data-title="multiscripts child count from 3 to 2">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-3" data-title="multiscripts child count from 0 to 3">
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-6" data-title="multiscripts child count from 3 to 6">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
<p>
<math>
<mmultiscripts data-reference="mmultiscripts-reference-8" data-title="multiscripts child count from 3 to 8">
<mspace width="10px" height="10px" style="background: black;"/>
<mspace width="10px" height="20px" style="background: black;"/>
<mspace width="10px" height="30px" style="background: black;"/>
</mmultiscripts>
</math>
</p>
</body>
</html>
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