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<!DOCTYPE HTML>
<html id="rcd_docelement">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Test that large OOPIF does not get a too-large displayport</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="helper_fission_utils.js"></script>
<script src="apz_test_utils.js"></script>
<script src="apz_test_native_event_utils.js"></script>
<script>
async function test() {
let iframe = document.getElementById("testframe");
await setupCrossOriginIFrame(iframe, "helper_fission_plain.html");
const remoteType = await SpecialPowers.spawn(iframe, [], async () => {
return await SpecialPowers.spawnChrome([], () => {
return windowGlobalParent.domProcess.remoteType;
});
});
if (remoteType === "web") {
is(SpecialPowers.effectiveIsolationStrategy(), SpecialPowers.ISOLATION_STRATEGY.IsolateHighValue);
ok(true, "Skipping this test since the document on example.com got loaded in the same content process");
return;
}
// Give the page a scroll range and make sure APZ sets non-empty displayport margins.
document.body.style.height = "500vh";
await promiseApzFlushedRepaints();
let iframeDp = await SpecialPowers.spawn(iframe, [], async () => {
// Give the page a scroll range. This will make the unclamped displayport
// even taller.
content.document.body.style.height = "200vh";
await content.wrappedJSObject.promiseApzFlushedRepaints();
// Query the composed displayport and report it to the embedder.
return content.wrappedJSObject.getLastContentDisplayportFor("fission_empty_docelement");
});
dump("iframe page displayport is " + JSON.stringify(iframeDp) + "\n");
// Query the page's displayport.
let dp = getLastContentDisplayportFor("rcd_docelement");
dump("page displayport is " + JSON.stringify(dp) + "\n");
// Check that the iframe's displayport is no more than twice as tall as
// the page's displayport. The reason it can be up to twice as tall is
// after making improvements in that bug.
ok(iframeDp.height <= (dp.height * 2), "iframe displayport should be no more than twice as tall as page displayport");
}
if (!SpecialPowers.Services.appinfo.fissionAutostart) {
ok(true, "This test doesn't need to run with disabling Fission");
subtestDone();
} else {
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
}
</script>
</head>
<body>
<!-- Make the iframe's viewport very tall // todo: maybe rather use viewport units to make it scrollable -->
<iframe style="margin-top: 200px" id="testframe" height="10000px"></iframe>
</body>
</html>