PushManager.md

PushManager

Namespace: SpawnDev.SpawnJS.JSObjects
Inherits: SpawnJSObject
Source: JSObjects/PushManager.cs
MDN Reference: PushManager on MDN

The PushManager interface of the Push API provides a way to receive notifications from third-party servers as well as request URLs for push notifications. https://developer.mozilla.org/en-US/docs/Web/API/PushManager

Constructors

Signature	Description
PushManager(SpawnJSObjectReference _ref)	Deserialization constructor

Methods

Method	Return Type	Description
Subscribe()	Task<PushSubscription>	Subscribes to a push service. It returns a Promise that resolves to a PushSubscription object containing details of a push subscription. A new push subscription is created if the current service worker does not have an existing subscription.
Subscribe(PushManagerSubscribeOptions options)	Task<PushSubscription>	Subscribes to a push service. It returns a Promise that resolves to a PushSubscription object containing details of a push subscription. A new push subscription is created if the current service worker does not have an existing subscription.
GetSubscription()	Task<PushSubscription?>	Retrieves an existing push subscription. It returns a Promise that resolves to a PushSubscription object containing details of an existing subscription. If no existing subscription exists, this resolves to a null value.
PermissionState()	Task<string>	Returns a Promise that resolves to the permission state of the current PushManager, which will be one of 'granted', 'denied', or 'prompt'.

Examples

SpawnDev.SpawnJS Mapping Note: The JavaScript examples below show the standard Web API usage. In SpawnDev.SpawnJS, the same API is available with C# conventions:

• Properties and methods use PascalCase (e.g., readyState becomes ReadyState)
• Events use ActionEvent with +=/-= (e.g., addEventListener("click", fn) becomes OnClick += handler)
• Async methods return Task<T> instead of Promise<T>
• Objects should be disposed with using statements
• Access via JS.Get<PushManager>(...) or constructor new PushManager(...)

this.onpush = (event) => {
  console.log(event.data);
  // From here we can write the data to IndexedDB, send it to any open
  // windows, display a notification, etc.
};

navigator.serviceWorker
  .register("serviceworker.js")
  .then((serviceWorkerRegistration) => {
    serviceWorkerRegistration.pushManager.subscribe().then(
      (pushSubscription) => {
        console.log(pushSubscription.endpoint);
        // The push subscription details needed by the application
        // server are now available, and can be sent to it using,
        // for example, the fetch() API.
      },
      (error) => {
        console.error(error);
      },
    );
  });

See full example on MDN