public void Transact(IUITransactable context, UITransactionOp op, object[] elems)
{
if (!Enabled)
{
return;
}
checkRestart();
UITransaction tr = new UITransaction();
tr.op = op;
tr.elems = elems;
tr.context = context;
trans.Add(tr);
}
public void Commit()
{
if (!Enabled)
{
return;
}
checkRestart();
if (trans.Count > 0 && trans[trans.Count - 1].op == UITransactionOp.Checkpoint)
{
return;
}
UITransaction tr = new UITransaction();
tr.op = UITransactionOp.Checkpoint;
trans.Add(tr);
}
public void UndoTransaction(UITransaction tr)
{
int ix;
switch (tr.op)
{
case UITransactionOp.SetAt:
list[tr.i1] = (T)tr.elems[0];
break;
case UITransactionOp.Add:
list.RemoveAt(list.Count - 1);
break;
case UITransactionOp.AddRange:
list.RemoveRange(list.Count - tr.i1, tr.i1);
break;
case UITransactionOp.RemoveAt:
list.Insert(tr.i1, (T)tr.elems[0]);
break;
case UITransactionOp.RemoveRange:
for (ix = 0; ix < tr.elems.Length; ix++)
{
list.Insert(tr.i1 + ix, (T)tr.elems[ix]);
}
break;
case UITransactionOp.Clear:
foreach (var obj in tr.elems)
{
list.Add((T)obj);
}
break;
case UITransactionOp.InsertAt:
list.RemoveAt(tr.i1);
break;
default:
throw new NotImplementedException("undotrans Unsupported OP: " + tr.op);
}
}
public void PlayTransaction(UITransaction tr)
{
switch (tr.op)
{
case UITransactionOp.SetAt:
list[tr.i1] = (T)tr.elems[1];
break;
case UITransactionOp.Add:
list.Add((T)tr.elems[0]);
break;
case UITransactionOp.AddRange:
foreach (var obj in tr.elems)
{
list.Add((T)obj);
}
break;
case UITransactionOp.RemoveAt:
list.RemoveAt(tr.i1);
break;
case UITransactionOp.RemoveRange:
list.RemoveRange(tr.i1, tr.i2);
break;
case UITransactionOp.Clear:
list.Clear();
break;
case UITransactionOp.InsertAt:
list.Insert(tr.i1, (T)tr.elems[0]);
break;
default:
throw new NotImplementedException("playtrans Unsupported OP: " + tr.op);
}
}
