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<!DOCTYPE html>
<script src="utils.js"></script>
<script>
const params = new URLSearchParams(location.search);
// The main test page (restriction-notification.https.html) loads the initiator
// page, then the initiator page will prerender itself with the `prerendering`
// parameter.
const isPrerendering = params.has('prerendering');
if (!isPrerendering) {
loadInitiatorPage();
} else {
// Used to communicate with the initiator page.
const prerenderChannel = new PrerenderChannel('prerender-channel');
// Used to communicate with the main test page.
const testChannel = new PrerenderChannel('test-channel');
window.addEventListener('load', () => {
// Inform the initiator page that this page is ready to be activated.
prerenderChannel.postMessage('readyToActivate');
prerenderChannel.close();
});
document.addEventListener('prerenderingchange', () => {
// Accessing the Notification API is allowed after the prerendering state
// changed.
const permission = Notification.permission;
const notification = new Notification('New Notification');
notification.onerror = function(_) {
testChannel.postMessage('notification error');
testChannel.close();
}
notification.onshow = function() {
testChannel.postMessage('notification showed');
notification.close();
testChannel.close();
};
});
}
</script>