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37 lines
1.8 KiB
HTML
37 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<title>Moving fullscreen document's body into a fullscreen iframe</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="../trusted-click.js"></script>
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<iframe allowfullscreen></iframe>
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<script>
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async_test(t => {
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const iframe = document.querySelector('iframe');
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const iframeDoc = iframe.contentDocument;
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// Enter fullscreen for the iframe's body element.
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trusted_request(t, iframeDoc.body, document.body);
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document.onfullscreenchange = t.step_func(() => {
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assert_equals(document.fullscreenElement, iframe, "document's initial fullscreen element");
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assert_equals(iframeDoc.fullscreenElement, iframeDoc.body, "iframe's initial fullscreen element");
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// Then, move the outer document's body into the iframe. This is an unusual
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// thing to do, but means that the iframe is removed from its document and
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// should trigger fullscreen exit.
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iframeDoc.documentElement.appendChild(document.body);
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// If we exit in an orderly fashion, that's all one can ask for.
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document.onfullscreenchange = t.step_func_done(() => {
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assert_equals(document.fullscreenElement, null, "document's final fullscreen element");
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// Because the iframe was removed, its browsing context was discarded and
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// its contentDocument has become null. Because that browsing context was
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// neither a descendant browsing context nor had an active document,
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// nothing at all was done with it in the exit fullscreen algorithm, so
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// its fullscreenElement is unchanged.
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assert_equals(iframe.contentDocument, null, "iframe's content document");
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assert_equals(iframeDoc.fullscreenElement, iframeDoc.body, "iframe's final fullscreen element");
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});
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});
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});
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</script>
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