/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IApp page)
{
//Native.Document.oner
// http://www.w3schools.com/html/html5_serversentevents.asp
// http://stackoverflow.com/questions/5195452/websockets-vs-server-sent-events-eventsource
new Cookie("xfoo").Value = "foo";
// Uncaught ReferenceError: EventSource is not defined at http://192.168.1.104:29568/view-source:28282
var s = new EventSource(url: "/foo?bar=2");
s.onopen +=
e =>
{
new IHTMLPre { innerText = "open" }.AttachToDocument();
};
s.onerror +=
e =>
{
new IHTMLPre { innerText = "error " + new { s.readyState } }.AttachToDocument();
//s.close();
};
s.onmessage +=
e =>
{
var now = DateTime.Now;
new IHTMLPre { innerText = now + " message " + e.data + " " + e.lastEventId }.AttachToDocument();
};
// script: error JSC1000:
//error:
// statement cannot be a load instruction (or is it a bug?)
// [0x00ad] ldloc.1 +1 -0
s["foo"] =
e =>
{
var m = (MessageEvent)e;
new IHTMLPre { innerText = "foo " + m.data }.AttachToDocument();
};
@"Hello world".ToDocumentTitle();
// Send data from JavaScript to the server tier
service.WebMethod2(
@"A string from JavaScript.",
value => value.ToDocumentTitle()
);
}
/// <summary>
/// This is a javascript application.
/// </summary>
/// <param name="page">HTML document rendered by the web server which can now be enhanced.</param>
public Application(IApp page)
{
var f = new ConsoleForm();
f.InitializeConsoleFormWriter();
f.Show();
// shard across browsers in the same session?
var session = new Cookie("session").DefaultToRandomInt32();
//Native.Window.localStorage
var random = new Cookie("random").DefaultToRandomInt32();
Console.WriteLine("\n Console has been redirected!");
Console.WriteLine("\n " + new { session = session.IntegerValue.ToString("x8") });
#region WaitInHandler
page.WaitInHandler.onclick +=
delegate
{
page.WaitInHandler.disabled = true;
new IXMLHttpRequest(
url: "/wait",
handler: r =>
{
page.WaitInHandler.disabled = false;
}
);
};
#endregion
page.CheckDatabase.onclick +=
delegate
{
service.CheckDatabase("",
Console.WriteLine
);
};
#region CheckServerForSession
page.CheckServerForSession.onclick +=
delegate
{
page.CheckServerForSession.disabled = true;
service.CheckServerForSession("" + session.IntegerValue,
x =>
{
Console.WriteLine(x);
page.CheckServerForSession.disabled = false;
}
);
};
#endregion
page.DoLongOperation.onclick +=
delegate
{
page.DoLongOperation.disabled = true;
// can we send IEvent as argument directly?
// can we set a field on client side and have
// it updated on each call?
service.DoLongOperation("" + session.IntegerValue,
delegate
{
page.DoLongOperation.disabled = false;
}
);
};
#region UseCurrentIdToGetOutput
page.UseCurrentIdToGetOutput.disabled = true;
// enable while clickonce is active
page.GetCurrentIdToStartListening.onclick +=
delegate
{
page.GetCurrentIdToStartListening.disabled = true;
service.SelectTransactionKey(
"" + session.IntegerValue,
id =>
{
Console.WriteLine(new { id });
page.UseCurrentIdToGetOutput.disabled = false;
page.UseCurrentIdToGetOutput.onclick +=
delegate
{
page.UseCurrentIdToGetOutput.disabled = true;
service.SelectContentUpdates(
"" + session.IntegerValue,
id,
y: Console.Write,
ynextid: nextid =>
{
id = nextid;
Console.WriteLine(new { id });
page.UseCurrentIdToGetOutput.disabled = false;
}
);
};
}
);
};
#endregion
#region StartServerSentEvents
page.StopServerSentEvents.disabled = true;
page.StartServerSentEvents.onclick +=
delegate
{
page.StartServerSentEvents.disabled = true;
page.StopServerSentEvents.disabled = false;
//var n = new XElement("e",
// new XAttribute("session", "" + session.IntegerValue)
//);
//var q = new StringBuilder();
//q.Append("/xml");
////q.Append("?");
////q.Append("e=" + n.ToString());
// Web Console(12961): Uncaught ReferenceError: EventSource is not defined at http://192.168.1.100:14690/view-source:46617
var s = new EventSource("/stream");
s["SystemConsoleOut"] =
e =>
{
//Console.WriteLine(new { SystemConsoleOut = new { e.lastEventId, e.data } });
Console.Write(((string)e.data)
.Replace("\\n", "\n")
.Replace("\\r", "\r")
);
};
s.onerror +=
e =>
{
//Console.WriteLine(new { onerror = new { s.readyState } });
if (s.readyState == 2)
{
// why are we getting that error??
s = null;
page.StartServerSentEvents.disabled = false;
page.StopServerSentEvents.disabled = true;
}
};
page.StopServerSentEvents.onclick +=
delegate
{
if (s == null)
return;
s.close();
s = null;
page.StartServerSentEvents.disabled = false;
page.StopServerSentEvents.disabled = true;
};
};
#endregion
page.ChangeSessionTo.innerText = "session " + session.IntegerValue.ToString("x8");
}
public static void InvokeSpecial(this ApplicationWebService service, XElement e, Action<XElement> y)
{
var q = new StringBuilder();
//q.Append("/event-stream");
q.Append("?");
q.Append("e=" + e.ToString());
var s = new EventSource(q.ToString());
s["y"] = a =>
{
var data = a.data.ToString()
.Replace("\\r", "\r")
.Replace("\\n", "\n");
Console.WriteLine(new { data });
var _y = XElement.Parse(data);
y(_y);
};
s.onerror +=
delegate
{
s.close();
};
}
public static void sync_SelectContentUpdates_EventStream(this ApplicationWebService service, string last_id, Action<XElement> yield, Action<string> yield_last_id)
{
// this is on the client now!
// some clients like IE do not support EventSource!
// neither does AppEngine:P revert to iframe?
// jsc might want to look at the features
// an app is using
// does the browser support svg, EventSource
// does the server support event-stream?
// if not show alternative app or error page
// IE does not have pointerlock
// android 2.2 stock browser has no svg!
dynamic w = Native.window;
IFunction EventSource = w.EventSource;
if (EventSource == null)
{
// fallback
service.sync_SelectContentUpdates(last_id, yield, yield_last_id);
return;
}
#region EventSource
//Console.WriteLine("enter EventSource");
var s = new EventSource("/ApplicationWebService.sync.SelectContentUpdates?id=" + last_id);
var id = last_id;
s["yield"] =
e =>
{
id = e.lastEventId;
//Console.WriteLine(new { SystemConsoleOut = new { e.lastEventId, e.data } });
var value = (((string)e.data)
.Replace("\\n", "\n")
.Replace("\\r", "\r")
);
yield(XElement.Parse(value));
};
s.onmessage +=
e =>
{
id = e.lastEventId;
};
s.onerror +=
e =>
{
//Console.WriteLine("exit EventSource " + new { id, s.readyState });
s.close();
yield_last_id(id);
};
#endregion
}
public static void async_WebMethod2(this ApplicationWebService x, string e, Action<string> y)
{
var q = new StringBuilder();
//q.Append("/event-stream");
q.Append("?");
q.Append("e=" + e);
var s = new EventSource(q.ToString());
s["y"] = a =>
{
var data = a.data.ToString()
.Replace("\\r", "\r")
.Replace("\\n", "\n");
//Console.WriteLine(new { data });
//var _y = XElement.Parse(data);
y(data);
};
s.onerror +=
delegate
{
s.close();
};
}
public static void add_NFCTagDiscovered(this ApplicationWebService service, Action<string> y)
{
var s = new EventSource();
s["y"] = a =>
{
var data = a.data.ToString()
.Replace("\\r", "\r")
.Replace("\\n", "\n");
y(data);
};
s.onerror +=
delegate
{
s.close();
};
}