/// <summary>
/// Handles the <see cref="Application.DispatcherUnhandledException"/> event.</summary>
/// <param name="information">
/// Information about the <see cref="Exception"/> and the current application state, or a
/// null reference for no available information.</param>
/// <param name="rulesFile">
/// The file path to the current scenario rule script, or a null reference if no such file
/// exists.</param>
/// <param name="saveScenario">
/// An optional <see cref="Action{String}"/> delegate that is invoked to save the current
/// scenario data to an XML file.</param>
/// <param name="saveSession">
/// An optional <see cref="Action{String}"/> delegate that is invoked to save the current
/// session data to an XML file.</param>
/// <remarks><para>
/// <b>OnUnhandledException</b> creates a text file describing the error which includes the
/// specified <paramref name="information"/>. Additionally, up to two debug XML files
/// containing scenario and session data are created by invoking any of the supplied <see
/// cref="Action{String}"/> delegates that are not null references.
/// </para><para>
/// The user is also asked to e-mail all created files, plus the specified <paramref
/// name="rulesFile"/> if it exists, to the e-mail address specified by the <see
/// cref="ApplicationInfo.Email"/> property via Simple MAPI, or if this fails, to send basic
/// error information to the same address using the Explorer "mailto" method.
/// </para><para>
/// Finally, <b>OnUnhandledException</b> terminates the application using <see
/// cref="Environment.Exit"/> and returns an error code of -1.</para></remarks>
public static void OnUnhandledException(string information, string rulesFile,
Action <String> saveScenario, Action <String> saveSession)
{
// check for original distribution package
bool original = ApplicationInfo.IsSigned;
// determine error and debug file names
string errorFile = FilePaths.CreateUserPath("FatalError.txt").AbsolutePath;
string scenarioFile = FilePaths.GetScenarioFile(ScenarioFileType.Debug).AbsolutePath;
string sessionFile = FilePaths.GetSessionFile(SessionFileType.Debug).AbsolutePath;
// create an error e-mail?
bool wantEmail = false;
if (original)
{
// ask user to create e-mail with attachments
string message = String.Format(ApplicationInfo.Culture,
Strings.DialogFatalErrorOriginal, errorFile, scenarioFile, sessionFile);
wantEmail = ShowFatalError(message, null, true);
}
else
{
// just notify user that files are being saved
string message = String.Format(ApplicationInfo.Culture,
Strings.DialogFatalErrorModified, errorFile, scenarioFile, sessionFile);
ShowFatalError(message, null, false);
}
// create state information string
StringBuilder info = new StringBuilder();
info.AppendFormat("{0} ", ApplicationInfo.Signature);
info.Append(Environment.NewLine);
info.AppendFormat("Kynosarges Signature: {0}", original);
info.Append(Environment.NewLine);
info.AppendFormat("Public Key Token: {0}",
StringUtility.Validate(ApplicationInfo.PublicKeyToken));
info.Append(Environment.NewLine);
info.AppendFormat("Home: \"{0}\" ", FilePaths.ApplicationFolder);
info.Append(Environment.NewLine);
info.Append(Environment.NewLine);
info.AppendFormat("{0} ", Environment.OSVersion);
info.Append(Environment.NewLine);
info.AppendFormat("{0} ", WindowsUtility.GetMemoryStatus());
info.Append(Environment.NewLine);
info.Append(Environment.NewLine);
// append additional information if specified
if (!String.IsNullOrEmpty(information))
{
info.AppendFormat("{0} ", information);
info.Append(Environment.NewLine);
}
// create subject for e-mail message
string subject = String.Concat(ApplicationInfo.Signature, " ", Strings.LabelError);
// collection to hold file attachment data
List <MapiAddress> files = new List <MapiAddress>();
try {
try {
// always create error information file
files.Add(new MapiAddress(Path.GetFileName(errorFile), errorFile));
using (StreamWriter writer = new StreamWriter(errorFile, false, Encoding.UTF8))
writer.WriteLine(info.ToString());
// attach rule script file if specified
RootedPath rulesPath = FilePaths.CreateCommonPath(rulesFile);
if (!rulesPath.IsEmpty && File.Exists(rulesPath.AbsolutePath))
{
files.Add(new MapiAddress(rulesPath.FileName, rulesPath.AbsolutePath));
}
// create scenario debug file if possible
if (saveScenario != null)
{
saveScenario(scenarioFile);
files.Add(new MapiAddress(Path.GetFileName(scenarioFile), scenarioFile));
}
// create session debug file if possible
if (saveSession != null)
{
saveSession(sessionFile);
files.Add(new MapiAddress(Path.GetFileName(sessionFile), sessionFile));
}
}
catch (Exception e) {
// only proceed if user wanted e-mail
if (wantEmail)
{
// ask user to try simpler e-mail format
wantEmail = ShowFatalError(Strings.DialogFatalErrorSaveMail, e, true);
throw; // rethrow to try mailto:
}
// user declined e-mail, just show error
ShowFatalError(Strings.DialogFatalErrorSave, e, false);
return; // quit, nothing else to do
}
// quit now if user declined e-mail
if (!wantEmail)
{
return;
}
try {
// address e-mail to application author
MapiAddress recipient = new MapiAddress(
ApplicationInfo.Company, ApplicationInfo.Email);
// try sending e-mail with attached files
MapiMail.SendMail(subject, "", new[] { recipient }, files.ToArray());
}
catch (Exception e) {
// quit if user cancelled MAPI session
MapiException me = e as MapiException;
if (me != null && me.Code == MapiException.Abort)
{
return;
}
// ask user to try simpler e-mail format
wantEmail = ShowFatalError(Strings.DialogFatalErrorMail, e, true);
throw; // rethrow to try mailto:
}
}
catch {
// quit now if user declined e-mail
if (!wantEmail)
{
return;
}
// construct shell command to create e-mail
string mailto = String.Format(CultureInfo.InvariantCulture,
"mailto:{0}?subject={1}&body={2}", ApplicationInfo.Email, subject, info);
try {
// request default e-mail client
Process.Start(mailto);
}
catch (Exception e) {
ShowExplorerError(null, Strings.DialogExplorerMailError, e);
}
}
finally {
// quit application upon return
Environment.Exit(-1);
}
}