//---------------------------------------------------------------------------------------
// This code follows the architecture drawn by DotNetBrowser
// (cf https://dotnetbrowser.support.teamdev.com/support/solutions/articles/9000109868-calling-javascript-from-net)
// For an example of implementation, go to INTERNAL_InteropImplementation.cs and
// ExecuteJavaScript_SimulatorImplementation method, in the first "if".
//---------------------------------------------------------------------------------------
#if OPENSILVER
private static object OnCallbackFromJavaScript <T>(
int callbackId,
string idWhereCallbackArgsAreStored,
T callbackArgsObject,
Func <int, int, string, T, Type[], object[]> makeArguments,
bool isInSimulator,
bool returnValue)
{
object result = null;
var actionExecuted = false;
Action action = () =>
{
INTERNAL_SimulatorExecuteJavaScript.RunActionThenExecutePendingAsyncJSCodeExecutedDuringThatAction(
() =>
{
//--------------------
// Call the callback:
//--------------------
try
{
result = CallMethod(callbackId, idWhereCallbackArgsAreStored, makeArguments, callbackArgsObject);
actionExecuted = true;
}
catch (Exception ex)
{
#if DEBUG
Console.Error.WriteLine("DEBUG: OnCallBack: OnCallBackFromJavascript: " + ex);
#endif
throw;
}
});
};
if (isInSimulator)
{
// Go back to the UI thread because DotNetBrowser calls the callback from the socket background thread:
if (returnValue)
{
var timeout = TimeSpan.FromSeconds(30);
INTERNAL_Simulator.WebControlDispatcherInvoke(action, timeout);
if (!actionExecuted)
{
GenerateDeadlockException(timeout);
}
}
else
{
INTERNAL_Simulator.WebControlDispatcherBeginInvoke(action);
}
}
else
{
action();
}
return(returnValue ? result : null);
}
public object OnCallbackFromJavaScript(
int callbackId,
string idWhereCallbackArgsAreStored,
JSArray callbackArgsObject,
bool returnValue)
{
object result = null;
var actionExecuted = false;
Action action = () =>
{
//--------------------
// Call the callback:
//--------------------
try
{
result = CallMethod(callbackId, idWhereCallbackArgsAreStored, MakeArgumentsForCallback, callbackArgsObject);
actionExecuted = true;
}
catch (global::System.Reflection.TargetInvocationException ex)
{
if (global::System.Diagnostics.Debugger.IsAttached)
{
if (ex.InnerException != null)
{
// We rethrow the inner exception if any, that is, the exception that happens in the C# code being called by "DynamicInvoke". cf. https://stackoverflow.com/questions/57383/in-c-how-can-i-rethrow-innerexception-without-losing-stack-trace
INTERNAL_Simulator.SimulatorProxy.ThrowExceptionWithoutLosingStackTrace(ex.InnerException);
}
else
{
throw;
}
}
else
{
INTERNAL_Simulator.SimulatorProxy.ShowException(ex.InnerException ?? ex);
}
}
};
if (Interop.IsRunningInTheSimulator)
{
// Go back to the UI thread because DotNetBrowser calls the callback from the socket background thread:
if (returnValue)
{
var timeout = TimeSpan.FromSeconds(30);
INTERNAL_Simulator.WebControlDispatcherInvoke(action, timeout);
if (!actionExecuted)
{
GenerateDeadlockException(timeout);
}
}
else
{
INTERNAL_Simulator.WebControlDispatcherBeginInvoke(action);
}
}
else
{
action();
}
return(result);
}
