/// <summary>
/// listen for dispatched messages send by PostMessage
/// </summary>
/// <param name="todo"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public async ValueTask <IAsyncDisposable> OnMessage <T>(Func <MessageEvent <T>, ValueTask> todo)
{
return(await JsRuntime.AddEventListener(
JsObjectRef,
"",
"message",
CallBackInteropWrapper.Create <JsRuntimeObjectRef>(
async payload =>
{
var eventPayload = new MessageEvent <T>
{
Data = await JsRuntime.GetInstanceProperty <T>(payload, "data").ConfigureAwait(false),
Origin = await JsRuntime.GetInstanceProperty <string>(payload, "origin")
.ConfigureAwait(false),
Source = await JsRuntime.GetInstanceProperty <WindowInterop>(payload, "source",
SerializationSpec).ConfigureAwait(false)
};
eventPayload.Source.SetJsRuntime(JsRuntime,
await JsRuntime.GetInstancePropertyRef(payload, "source").ConfigureAwait(false));
await todo.Invoke(eventPayload).ConfigureAwait(false);
},
getJsObjectRef: true
)).ConfigureAwait(false));
}
public async ValueTask <IAsyncDisposable> OnStorage(Func <StorageEvent, ValueTask> callback)
{
return(await JsRuntime.AddEventListener(JsObjectRef, "", "storage",
CallBackInteropWrapper.Create <JsRuntimeObjectRef>(
async jsObject =>
{
var eventContent = await JsRuntime.GetInstanceContent <StorageEvent>(jsObject,
new { key = true, oldValue = true, newValue = true, url = true });
eventContent.Storage = new WindowStorage(JsRuntime,
await JsRuntime.GetInstancePropertyRef(jsObject, "storageArea"));
await callback(eventContent);
},
getJsObjectRef: true
)
));
}