/// <summary>
/// Attempts to load the session corresponding to the given path.
/// </summary>
/// <param name="filePath">The path to a solution or package file.</param>
/// <returns><c>True</c> if the session was successfully loaded, <c>False</c> if an error occurred, <c>Null</c> if the operation was cancelled by user.</returns>
public async Task <bool?> OpenSession(UFile filePath)
{
if (Session != null)
{
throw new InvalidOperationException("A session is already open in this instance.");
}
if (filePath != null && !File.Exists(filePath))
{
MRU.RemoveFile(filePath);
await ServiceProvider.Get <IDialogService>().MessageBox(string.Format(Tr._p("Message", @"The file '{0}' does not exist."), filePath), MessageBoxButton.OK, MessageBoxImage.Information);
return(false);
}
var sessionResult = new PackageSessionResult();
var loadedSession = await SessionViewModel.OpenSession(filePath, ServiceProvider, this, sessionResult);
// Loading has failed
if (loadedSession == null)
{
// Null means the user has cancelled the loading operation.
return(sessionResult.OperationCancelled ? (bool?)null : false);
}
MRU.AddFile(filePath);
Session = loadedSession;
InternalSettings.FileDialogLastOpenSessionDirectory.SetValue(new UFile(filePath).GetFullDirectory());
InternalSettings.Save();
return(true);
}