bool UndoStack::redo(uint steps, int objectId)
{
for (uint i = 0; i < steps && !redoActions_.empty(); ++i) {
UndoState *tmpRedoState = 0;
if (objectId == Um::GLOBAL_UNDO_MODE)
{
tmpRedoState = redoActions_[0];
redoActions_.erase(redoActions_.begin());
}
else
{ // object specific mode (search the correct state)
StateList::iterator it;
for (it = redoActions_.begin(); it != redoActions_.end(); ++it)
{
UndoObject *tmp = (*it)->undoObject();
if (tmp && tmp->getUId() == static_cast<ulong>(objectId))
{
tmpRedoState = *it;
redoActions_.erase(it);
break;
}
}
}
undoActions_.insert(undoActions_.begin(), tmpRedoState); // push to the undo actions
tmpRedoState->redo();
}
return true;
}
bool UndoStack::undo(uint steps, int objectId)
{
for (uint i = 0; i < steps && !undoActions_.empty(); ++i) {
UndoState *tmpUndoState = 0;
if (objectId == Um::GLOBAL_UNDO_MODE)
{
tmpUndoState = undoActions_[0];
undoActions_.erase(undoActions_.begin());
}
else
{ // object specific mode (search the correct state)
StateList::iterator it;
for (it = undoActions_.begin(); it != undoActions_.end(); ++it)
{
UndoObject *tmp = (*it)->undoObject();
if (tmp && tmp->getUId() == static_cast<ulong>(objectId))
{
tmpUndoState = *it;
undoActions_.erase(it);
break;
}
else if((*it)->isTransaction())
{
TransactionState *ts = dynamic_cast<TransactionState*>(*it);
if(ts->containsOnly(objectId))
{
tmpUndoState = *it;
undoActions_.erase(it);
break;
}
}
}
}
redoActions_.insert(redoActions_.begin(), tmpUndoState); // push to the redo actions
tmpUndoState->undo();
}
return true;
}
void UndoManager::setState(UndoGui* gui, int uid)
{
gui->clear();
if ( stacks_[currentDoc_].size() == 0 )
return;
UndoStack& currentStack = stacks_[currentDoc_];
StateList::iterator itstartU = currentStack.undoActions_.begin(); // undo actions
StateList::iterator itendU = currentStack.undoActions_.end();
StateList::iterator itstartR = currentStack.redoActions_.begin(); // redo actions
StateList::iterator itendR = currentStack.redoActions_.end();
if (uid > -1)
{ // find the range from where actions are added when in obj. spec. mode
StateList::iterator it2;
for (it2 = currentStack.undoActions_.begin();
it2 != currentStack.undoActions_.end(); ++it2)
{
UndoState* tmp = *it2;
TransactionState *ts = dynamic_cast<TransactionState*>(tmp);
if (ts && !ts->containsOnly(uid))
{
if (it2 != currentStack.undoActions_.begin())
itendU = --it2;
break;
}
}
StateList::iterator it3;
for (it3 = currentStack.redoActions_.begin();
it3 != currentStack.redoActions_.end(); ++it3)
{
UndoState* tmp = *it3;
TransactionState *ts = dynamic_cast<TransactionState*>(tmp);
if (ts && !ts->containsOnly(uid))
{
itendR = it3;
break;
}
}
}
if (currentStack.undoItems() > 0)
{
if (itendU == currentStack.undoActions_.end())
--itendU;
for (; itendU >= itstartU; --itendU) // insert undo actions
{
UndoState* state = *itendU;
UndoObject* target = state->undoObject();
if (target && (uid == -1 || target->getUId() == static_cast<uint>(uid)))
gui->insertUndoItem(target, state);
if (itendU == itstartU)
break;
}
}
if (currentStack.redoItems() > 0)
{
if (itendR > itstartR)
--itendR;
for (; itstartR <= itendR; ++itstartR) // insert redo actions
{
UndoState* state = *itstartR;
UndoObject* target = state->undoObject();
if (target && (uid == -1 || target->getUId() == static_cast<uint>(uid)))
gui->insertRedoItem(target, state);
if (itendR == itstartR)
break;
}
}
}