Push from Uno to Javascript

How-to Discussions
1

Hi!

Is there a way to push/call a method in javascript from Uno? So for example if Uno had a listener that was listening for messages, and when something arrives the listener in Uno will let javascript know that something has arrived.

Thanks!

Eddie

2

Hi!

Here is how you can implement an event in Uno which calls back to your JavaScript (the docs will be updated to include this soon):

using Fuse;
using Fuse.Scripting;
using Fuse.Reactive;

namespace JSUno
{
    public class Chat : NativeModule
    {
        NativeEvent _nativeEvent;

        public Chat()
        {
            AddMember(new NativeFunction("send", (NativeCallback)SendMessage));
            _nativeEvent = new NativeEvent("onMessageReceived");
            AddMember(_nativeEvent);
        }

        object[] SendMessage(Fuse.Scripting.Context context, object[] args)
        {
            var arg = args[0] as string;
            if(arg != null)
                _nativeEvent.RaiseAsync(arg);
            else
                _nativeEvent.RaiseAsync("----");

            return null;
        }
    }
}


var chat = require("chat")
function send() {
    chat.send(new Date().toString());
}

chat.onMessageReceived = function(message) {
    console.log("onMessageReceived " + message);
};

Add this to your UX to make the chat module available in JS: <JSUno.Chat ux:Global="chat" />

3

thanks! that worked like a charm :slight_smile: