internal static void viewModel_ErrorHandler(object sender, ViewModel.EventArgs.ErrorHandlerEventArgs e)
{
// If we're already showing an error to the user don't bother and queue up some more. They are probably
// the same issue since connectivity problems will cause 4+ error messages in a row
lock (reportingErrorLock)
{
if (reportingError == true)
{
return;
}
else
{
// Need to ensure we are calling MessageBox from the UI thread
if (dispatcher != null)
{
reportingError = true;
IDictionary <string, string> exceptionReport = new Dictionary <string, string>();
exceptionReport.Add(e.error.GetType().ToString(), e.error.ToString());
dispatcher.BeginInvoke(() => viewModel_ErrorHandlerThread(sender, e, exceptionReport));
}
}
}
}
private static void viewModel_ErrorHandlerThread(object sender, ViewModel.EventArgs.ErrorHandlerEventArgs e, IDictionary <string, string> exceptionReport)
{
// Ensure that we never process more than one error at a time
lock (errorProcessingLock)
{
string errorTitle = "Uh oh...";
string errorMessage;
MessageBoxButton messageBoxType = MessageBoxButton.OK;
if (e.error is WebException)
{
errorTitle = "Internet Unavailable";
errorMessage =
"We couldn't reach the OneBusAway service: " +
"please make sure your phone is correctly connected to the internet, " +
"or the OneBusAway service might be unavailable right now.";
messageBoxType = MessageBoxButton.OK;
}
else if (e.error is LocationUnavailableException)
{
errorTitle = "Location Unavailable";
errorMessage = e.error.Message;
messageBoxType = MessageBoxButton.OK;
}
else if (e.error is WebserviceParsingException)
{
errorMessage =
"Something went wrong decyphering the bus status, " +
"would you like to report this error to us so we can try and fix it?";
messageBoxType = MessageBoxButton.OKCancel;
}
else if (e.error is WebserviceResponseException)
{
// If the error code is set to "unused" then we couldn't even parse the return code
// from the OBA resopnse
if (((WebserviceResponseException)e.error).ServerStatusCode == HttpStatusCode.Unused)
{
errorTitle = "Internet Unavailable";
errorMessage =
"Check if you are connected to a WIFI network which requires a login " +
"or try to open a web page in Internet Explorer.\r\n\r\n" +
"We were able to reach the internet but the response we received wasn't from OneBusAway. " +
"This normally means you are connected to a WIFI network which is returning a login page instead.";
messageBoxType = MessageBoxButton.OK;
}
else
{
errorMessage =
"We were able to contact OneBusAway but the service returned an error. " +
"We don't think this is our fault, but would you like to report this error so we can make sure?";
messageBoxType = MessageBoxButton.OKCancel;
}
}
else
{
errorMessage =
"Unfortunately I don't have a clue why this happened, " +
"but would you like to report this error to us so we can try and fix it?";
messageBoxType = MessageBoxButton.OKCancel;
}
MessageBoxResult sendReport = MessageBox.Show(errorMessage, errorTitle, messageBoxType);
if (messageBoxType == MessageBoxButton.OKCancel && sendReport == MessageBoxResult.OK)
{
//Sending the email will take OBA out of the foreground, so leave reportingErorr set to true
//to make sure we don't try to send any more error reports from the background which will hit an exception.
//When the app is un-tombstoned the constructor will set reportingError back to false.
Version version = new AssemblyName(Assembly.GetExecutingAssembly().FullName).Version;
EmailComposeTask emailComposeTask = new EmailComposeTask();
emailComposeTask.To = AViewModel.FeedbackEmailAddress;
emailComposeTask.Body = string.Format(
"Please tell us a few details about what you were doing when the error occurred: \r\n\r\n\r\n" +
"Debugging info for us: \r\n" +
"OneBusAway Version: {0} \r\n" +
"{1}",
version,
e.error
);
// The email task will crash if the message is longer than 32k characters
if (emailComposeTask.Body.Length > 30000)
{
emailComposeTask.Body = emailComposeTask.Body.Remove(30000);
}
emailComposeTask.Subject = string.Format("OneBusAway Error: {0}", e.error.GetType());
emailComposeTask.Show();
}
else
{
lock (reportingErrorLock)
{
reportingError = false;
}
}
}
}
