private void AddOrDeleteChanging(ComposablePartCatalogChangeEventArgs changeArgs, Action addDeleteAction, bool added)
{
bool changeException = false;
ChangeRejectedException changeRejectedException = null;
string failureDetails = null;
bool recompositionSuccess = false;
RecompositionEventReason recompositionEventReason = RecompositionEventReason.Deleted;
try
{
Changing?.Invoke(this, changeArgs);
}
catch (ChangeRejectedException exc)
{
failureDetails = GetChangeRejectedExceptionMessage(exc);
changeException = true;
}
addDeleteAction();
Changed?.Invoke(this, changeArgs);
if (!changeException)
{
recompositionSuccess = true;
}
else
{
RecompositionException(changeRejectedException);
}
if (added)
{
recompositionEventReason = RecompositionEventReason.Added;
}
RecompositionAttemptEvent?.Invoke(this, new RecompositionAttemptEventArgs(recompositionSuccess, recompositionEventReason, failureDetails));
}
internal RecompositionAttemptEventArgs(bool success, RecompositionEventReason reason, string failureDetails)
{
Success = success;
Reason = reason;
FailureDetails = failureDetails;
}
