BOOL OperationHistory::RedoNext()
{
ListItem* next;
if (NowPtr == NULL)
// If the NowPtr is NULL then if there are any redo operations then the first will be
// found at the head of the OpHistoryList
next = OpHistoryList.GetHead();
else
// The first redo operation will be found after the NowPtr
next = OpHistoryList.GetNext(NowPtr);
if ( next != NULL)
{
Operation* pOp = (Operation*)next;
BROADCAST_TO_ALL(OpMsg(pOp,OpMsg::BEFORE_REDO));
// There is an operation to redo
if (pOp->Redo()) // REDO the operation
{
NowPtr = next;
BROADCAST_TO_ALL(OpMsg(((Operation*)NowPtr), OpMsg::AFTER_REDO));
return (TRUE);
}
}
return (FALSE); // There are no operations to REDO
}
void ManipulatorOperation::Redo()
{
if (!m_lstRedo.empty())
{
Operation* op = m_lstRedo.back();
op->Redo();
m_lstRedo.pop_back();
m_lstUndo.push_back(op);
++m_snapshot;
}
}