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37 lines
1.3 KiB
HTML
37 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<title>Element#requestFullscreen() on two elements in the same document</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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<div id="log"></div>
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<div id="a"></div>
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<div id="b"></div>
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<script>
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async_test(t => {
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// Request fullscreen on both elements, but in reverse tree order.
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const a = document.getElementById('a');
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const b = document.getElementById('b');
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// Expect two fullscreenchange events, with document.fullscreenElement
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// changing in the same order as the requests.
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const order = [];
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document.onfullscreenchange = t.step_func(() => {
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assert_in_array(document.fullscreenElement, [a, b]);
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order.push(document.fullscreenElement.id);
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if (order.length == 2) {
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// Since fullscreenchange event occurs at animation frame timing we might
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// have not seen the transition from null -> 'b' but just see the
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// resulting 'a' transition twice.
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assert_true(order[0] == 'a' || order[0] == 'b', 'first id seen is a or b');
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assert_true(order[1] == 'a', 'second id seen is b');
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t.done();
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}
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});
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document.onfullscreenerror = t.unreached_func('fullscreenerror event');
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trusted_click(t, () => {
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b.requestFullscreen();
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a.requestFullscreen();
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}, document.body);
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});
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</script>
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