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<!DOCTYPE html>
<script src="/common/utils.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="/speculation-rules/prerender/resources/utils.js"></script>
<script src="/speculation-rules/prerender/resources/deferred-promise-utils.js"></script>
<body>
<script>
async function main() {
const iframe_uid = token();
const iFrameChannel = new PrerenderChannel('iframe-channel',iframe_uid);
const crossOriginUrl =
new URL(`cross-origin-iframe-src-prerender.html?uid=${iframe_uid}`,
get_host_info()['HTTPS_REMOTE_ORIGIN'] +
window.location.pathname);
// Send the observed events back to the main test page.
const testChannel = new PrerenderChannel('test-channel');
// Start loading a cross-origin iframe. The iframe messages us with the
// value of its document.prerendering, which should be true on load and
// then get to false.
const crossOriginIframe = document.createElement('iframe');
crossOriginIframe.src = crossOriginUrl.href;
document.body.appendChild(crossOriginIframe);
// Wait iframe load to confirm prerenderingchange listener registration.
await new Promise((resolve, reject) => {
//window.addEventListener('message', (e) => {
iFrameChannel.addEventListener('message', (e) => {
if (e.data == 'onload')
resolve();
else
reject('bad message: ' + e.data);
}, {once: true});
}).catch( (error)=> {
testChannel.postMessage(error);
});
// Async wait finishing prerendering in the iframe and report it.
new Promise((resolve, reject) => {
iFrameChannel.addEventListener('message', (e) => {
if (e.data == 'document.prerendering changes to false from true')
resolve();
else
reject('bad message: ' + e.data);
}, {once:true});
}).then(()=>{
message = 'iframe prerender finished correctly.';
}, (error)=>{
message = error;
}).finally(()=>{
iFrameChannel.close();
testChannel.postMessage(message);
testChannel.close();
});
// Activate this page to activate the iframe too.
const prerenderChannel = new PrerenderChannel('prerender-channel');
prerenderChannel.postMessage('readyToActivate');
prerenderChannel.close();
new PrerenderChannel('close').addEventListener('message', () => {
window.close();
});
}
// The main test page (cross-origin-iframe-prerender.https.html) loads the
// initiator page, then the initiator page will prerender itself with the
// `prerendering` parameter.
const params = new URLSearchParams(location.search);
if (!params.has('prerendering')) {
const rule_extras = {'target_hint': getTargetHint()};
loadInitiatorPage(rule_extras);
} else {
main();
}
</script>
</body>