private async Task <string> ShowDialog(RContext[] contexts, string message, MessageButtons buttons, CancellationToken ct)
{
TaskUtilities.AssertIsOnBackgroundThread();
MessageButtons input = await _callbacks.ShowDialog(contexts, message, buttons, ct);
ct.ThrowIfCancellationRequested();
string response;
switch (input)
{
case MessageButtons.No:
response = "N";
break;
case MessageButtons.Cancel:
response = "C";
break;
case MessageButtons.Yes:
response = "Y";
break;
default: {
var error = Invariant($"YesNoCancel: callback returned an invalid value: {input}");
Trace.Fail(error);
throw new InvalidOperationException(error);
}
}
return(response);
}
private async Task ShowDialog(Message request, bool allowEval, MessageButtons buttons, CancellationToken ct)
{
TaskUtilities.AssertIsOnBackgroundThread();
request.ExpectArguments(2);
var contexts = GetContexts(request);
var s = request.GetString(1, "s", allowNull: true);
MessageButtons input;
try {
_canEval = allowEval;
input = await _callbacks.ShowDialog(contexts, s, _canEval, buttons, ct);
} finally {
_canEval = false;
}
ct.ThrowIfCancellationRequested();
string response;
switch (input)
{
case MessageButtons.No:
response = "N";
break;
case MessageButtons.Cancel:
response = "C";
break;
case MessageButtons.Yes:
response = "Y";
break;
default: {
FormattableString error = $"YesNoCancel: callback returned an invalid value: {input}";
Trace.Fail(Invariant(error));
throw new InvalidOperationException(Invariant(error));
}
}
await RespondAsync(request, ct, response);
}