public override string Ask(string title, string message, string defaultValue)
{
const int OK = 1;
string response = null;
using (var alert = NSAlert.WithMessage(title,
"OK",
"Cancel",
null,
message))
{
using (var input = new NSTextField(new CGRect(0, 0, 200, 24)))
{
alert.AccessoryView = input;
nint result;
do
{
input.StringValue = defaultValue;
result = alert.RunSheetModal(_mainWindow);
input.ValidateEditing();
}while ((result == OK) && string.IsNullOrWhiteSpace(input.StringValue));
if (result == OK)
{
response = input.StringValue;
}
}
}
return(response);
}