public OpStatus StepBack()
{
if (iCurrent == 0)
{
return(OpStatus.Success); // weird but ok
}
IChangeOp op = vHistory[iCurrent - 1];
DebugUtil.Log(2, "ChangeHistory.StepBack: reverting {0}", op.Identifier());
OpStatus result = op.Revert();
if (result.code != OpStatus.no_error)
{
DebugUtil.Error("[ChangeHistory::StepBack] Revert() of ChangeOp {0} failed - result was code {1} message {2}",
op.Identifier(), result.code, result.message);
return(result);
}
iCurrent--;
return(OpStatus.Success);
}
