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<!doctype html>
<meta charset=utf-8>
<title>Check how allowfullscreen affects fullscreen enabled flag</title>
<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://html.spec.whatwg.org/multipage/browsing-the-web.html#initialise-the-document-object">
<link rel="help" href="https://fullscreen.spec.whatwg.org/#fullscreen-enabled-flag">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
// This returns a data URL (cross-origin with the containing document) which
// advances a counter, and reports the counter value together with the
// document's fullscreenEnabled state, every time it receives a postMessage.
function getSourceForCrossOriginPage(initial_count) {
var page_contents = "<html><body><script>var count="+initial_count+";window.addEventListener('message',function(){parent.postMessage({'count':count++,'fullscreenEnabled':document.fullscreenEnabled},'*');});</scr"+"ipt></body></html>";
return "data:text/html;base64,"+btoa(page_contents);
}
async_test(function(t) {
var iframe = document.createElement("iframe");
iframe.src = "support/blank.htm";
var eventWatcher = new EventWatcher(t, iframe, "load");
document.body.appendChild(iframe);
t.add_cleanup(function() {
document.body.removeChild(iframe);
});
assert_true(document.fullscreenEnabled, "Top level document has fullscreen enabled flag set");
eventWatcher.wait_for("load").then(t.step_func_done(function() {
assert_true(iframe.contentDocument.fullscreenEnabled, "Document inside same-origin iframe without allowfullscreen attribute should still have fullscreen enabled flag set");
}));
}, "iframe-same-origin-allowfullscreen");
async_test(function(t) {
var iframe = document.createElement("iframe");
iframe.src = getSourceForCrossOriginPage(0);
iframe.addEventListener('load', function() {
// Request the fullscreenEnabled state whenever the frame loads
iframe.contentWindow.postMessage(true,"*");
});
window.addEventListener('message', this.step_func(function(msg) {
if (msg.data.count == 0) {
assert_false(msg.data.fullscreenEnabled, "Document inside cross-origin iframe without allowfullscreen attribute should not have fullscreen enabled flag set");
iframe.setAttribute("allowfullscreen", "");
iframe.contentWindow.postMessage(true,"*"); // Request state again
} else if (msg.data.count == 1) {
assert_false(msg.data.fullscreenEnabled, "Fullscreen should be denied when allowfullscreen attribute is added, before reload");
iframe.src = getSourceForCrossOriginPage(2); // Reload the frame
} else if (msg.data.count == 2) {
assert_true(msg.data.fullscreenEnabled, "Fullscreen should be allowed when allowfullscreen attribute is added, after reload");
iframe.removeAttribute("allowfullscreen");
iframe.contentWindow.postMessage(true,"*"); // Request state again
} else if (msg.data.count == 3) {
assert_true(msg.data.fullscreenEnabled, "Fullscreen should be allowed when allowfullscreen attribute is removed, before reload");
iframe.src = getSourceForCrossOriginPage(4); // Reload the frame
} else if (msg.data.count == 4) {
assert_false(msg.data.fullscreenEnabled, "Fullscreen should be denied when allowfullscreen attribute is removed, after reload");
t.done();
}
}));
document.body.appendChild(iframe);
t.add_cleanup(function() {
document.body.removeChild(iframe);
});
}, "iframe-cross-origin-allowfullscreen");
/* Fullscreen enabled flag with about:blank */
function test_allowfullscreen_noload(setup_iframe, check) {
var iframe = document.createElement("iframe");
setup_iframe(iframe);
document.body.appendChild(iframe);
check(iframe.contentDocument);
document.body.removeChild(iframe);
}
test(function() {
test_allowfullscreen_noload(function() {}, function(doc) {
assert_true(doc.fullscreenEnabled, "Fullscreen should still be enabled in same-origin document without allowfullscreen attribute");
});
}, "iframe-noload-noallowfullscreen");
test(function() {
test_allowfullscreen_noload(function(iframe) {
iframe.setAttribute("allowfullscreen", true);
}, function(doc) {
assert_true(doc.fullscreenEnabled, "Fullscreen should be enabled with allowfullscreen attribute");
});
}, "iframe-noload-allowfullscreen");
</script>
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