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<!doctype html>
<meta charset="utf-8">
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<style>
div { text-align: justify; max-height: 100vh; }
</style>
<div id="testElement"></div>
<script>
// TODO(emilio): Upstream to WPT once there's a spec for this and our
// implementation is not [ChromeOnly].
const testElement = document.getElementById("testElement");
testElement.innerHTML = "X ".repeat(5000);
{
const rect = testElement.getBoundingClientRect();
const node =
document.nodeFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
is(node, testElement.firstChild, "Should return the text node");
const nodes =
document.nodesFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
const expected = [testElement.firstChild, testElement, document.body, document.documentElement];
is(nodes.length, expected.length, "Not the amount of expected nodes");
for (let i = 0; i < nodes.length; ++i)
is(nodes[i], expected[i]);
}
// Make the test slotted, and add some fallback that we'll test later as well.
{
// Work around the sanitizer by building the DOM manually....
const slot = document.createElement("slot");
slot.innerHTML = "Y ".repeat(5000);
const wrapper = document.createElement("div");
wrapper.appendChild(slot);
testElement.attachShadow({ mode: "open" }).appendChild(wrapper);
}
{
const rect = testElement.getBoundingClientRect();
const node =
document.nodeFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
is(node, testElement.firstChild, "Should return the text node");
const nodes =
document.nodesFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
const expected = [testElement.firstChild, testElement, document.body, document.documentElement];
is(nodes.length, expected.length, "Not the amount of expected nodes (returned nodes in the shadow?)");
for (let i = 0; i < nodes.length; ++i)
is(nodes[i], expected[i]);
}
{
const rect = testElement.getBoundingClientRect();
const node =
testElement.shadowRoot.nodeFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
is(node, testElement.shadowRoot.firstChild, "Should return the div wrapping the text node");
const nodes =
testElement.shadowRoot.nodesFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
const expected = [testElement.shadowRoot.firstChild];
is(nodes.length, expected.length, "Not the amount of expected nodes (returned nodes outside of the shadow?)");
for (let i = 0; i < nodes.length; ++i)
is(nodes[i], expected[i]);
}
// Show the fallback.
testElement.firstChild.remove();
{
const rect = testElement.getBoundingClientRect();
const fallbackText = testElement.shadowRoot.querySelector("slot").firstChild;
const node =
testElement.shadowRoot.nodeFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
is(node, fallbackText, "Should return the fallback text");
const nodes =
testElement.shadowRoot.nodesFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
const expected = [fallbackText, testElement.shadowRoot.firstChild];
is(nodes.length, expected.length, "Not the amount of expected nodes (returned nodes outside of the shadow?)");
for (let i = 0; i < nodes.length; ++i)
is(nodes[i], expected[i]);
}
// Test the fallback from the document.
{
const rect = testElement.getBoundingClientRect();
const node =
document.nodeFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
is(node, testElement, "Should return the element, since the fallback text is in the shadow");
const nodes =
document.nodesFromPoint(rect.x + rect.width / 2, rect.y + rect.height / 2);
const expected = [testElement, document.body, document.documentElement];
is(nodes.length, expected.length, "Not the amount of expected nodes (returned nodes inside of the shadow?)");
for (let i = 0; i < nodes.length; ++i)
is(nodes[i], expected[i]);
}
</script>
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