WebPage.sendMessageToView

void sendMessageToView(webkitwebprocessextension.user_message.UserMessage message,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Send message to the #WebKitWebView corresponding to web_page. If message is floating, it's consumed.

If you don't expect any reply, or you simply want to ignore it, you can pass null as callback. When the operation is finished, callback will be called. You can then call [webkitwebprocessextension.web_page.WebPage.sendMessageToViewFinish] to get the message reply.

Parameters

`message`	a #WebKitUserMessage
`cancellable`	a #GCancellable or null to ignore
`callback`	A #GAsyncReadyCallback to call when the request is satisfied or null