Note: This feature is only available in Service Workers.
The WindowClient interface of the ServiceWorker API represents the scope of a service worker client that is a document in a browsing context, controlled by an active worker. The service worker client independently selects and uses a service worker for its own loading and sub-resources.
WindowClient inherits methods from its parent interface, Client.
WindowClient.focus()Gives user input focus to the current client.
Loads a specified URL into a controlled client page.
WindowClient inherits properties from its parent interface, Client.
WindowClient.ancestorOrigins Read only An array of strings that indicates the ancestor origins of the browsing context represented by this WindowClient in reverse order.
WindowClient.focused Read onlyA boolean that indicates whether the current client has focus.
WindowClient.visibilityState Read onlyIndicates the visibility of the current client. This value can be one of "hidden" or "visible".
self.addEventListener("notificationclick", (event) => {
console.log("On notification click: ", event.notification.tag);
event.notification.close();
// This looks to see if the current is already open and
// focuses if it is
event.waitUntil(
clients
.matchAll({
type: "window",
})
.then((clientList) => {
for (const client of clientList) {
if (client.url === "/" && "focus" in client) {
client.focus();
break;
}
}
if (clients.openWindow) return clients.openWindow("/");
}),
);
});