void redo() {
if (_redoStack.empty()) {
rMessage() << "Redo: no redo available" << std::endl;
}
else {
Operation* operation = _redoStack.back();
rMessage() << "Redo: " << operation->_command << std::endl;
startUndo();
trackersRedo();
operation->_snapshot.restore();
finishUndo(operation->_command);
_redoStack.pop_back();
for (Observers::iterator i = _observers.begin(); i != _observers.end(); /* in-loop */) {
Observer* observer = *(i++);
observer->postRedo();
}
// Trigger the onPostUndo event on all scene nodes
PostRedoWalker walker;
GlobalSceneGraph().root()->traverse(walker);
GlobalSceneGraph().sceneChanged();
}
}
void Controller::undo()
{
UndoStack *stack = selectActiveStack(true);
if (stack) {
stack->undo();
}
}
void Controller::redo()
{
UndoStack *stack = selectActiveStack(false);
if (stack) {
stack->redo();
}
}
void start() {
_redoStack.clear();
if (_undoStack.size() == _undoLevels) {
_undoStack.pop_front();
}
startUndo();
trackersBegin();
}
void clear() {
mark_undoables(0);
_undoStack.clear();
_redoStack.clear();
trackersClear();
// greebo: This is called on map shutdown, so don't clear the observers,
// there are some "persistent" observers like EntityInspector and ShaderClipboard
}
void TextBase::endEdit(EditData& ed)
{
TextEditData* ted = static_cast<TextEditData*>(ed.getData(this));
score()->undoStack()->remove(ted->startUndoIdx); // remove all undo/redo records
// replace all undo/redo records collected during text editing with
// one property change
QString actualText = xmlText();
if (ted->oldXmlText.isEmpty()) {
UndoStack* us = score()->undoStack();
UndoCommand* ucmd = us->last();
if (ucmd) {
const QList<UndoCommand*>& cl = ucmd->commands();
const UndoCommand* cmd = cl.back();
if (strncmp(cmd->name(), "Add:", 4) == 0) {
const AddElement* ae = static_cast<const AddElement*>(cmd);
if (ae->getElement() == this) {
if (actualText.isEmpty()) {
// we just created this empty text, rollback that operation
us->rollback();
score()->update();
ed.element = 0;
}
else {
setXmlText(ted->oldXmlText); // reset text to value before editing
us->reopen();
// combine undo records of text creation with text editing
undoChangeProperty(Pid::TEXT, actualText);
layout1();
score()->endCmd();
}
return;
}
}
}
}
if (actualText.isEmpty()) {
qDebug("actual text is empty");
score()->startCmd();
score()->undoRemoveElement(this);
ed.element = 0;
score()->endCmd();
return;
}
setXmlText(ted->oldXmlText); // reset text to value before editing
score()->startCmd();
undoChangeProperty(Pid::TEXT, actualText); // change property to set text to actual value again
// this also changes text of linked elements
layout1();
triggerLayout(); // force relayout even if text did not change
score()->endCmd();
static const qreal w = 2.0;
score()->addRefresh(canvasBoundingRect().adjusted(-w, -w, w, w));
}
// Sets the size of the undoStack
void setLevels(std::size_t levels) {
if (levels > MAX_UNDO_LEVELS) {
levels = MAX_UNDO_LEVELS;
}
while (_undoStack.size() > levels) {
_undoStack.pop_front();
}
_undoLevels = levels;
}
AnimationRect::AnimationRect(const sf::IntRect& rect, int frame, UndoStack& undo_stack) {
this->rect = rect;
this->frame = frame;
this->undo_stack = &undo_stack;
undo_stack.push(*new AnimationRectCreated(this, rect, frame));
}
// greebo: This finishes the current operation and
// removes it instantly from the stack
void cancel() {
// Try to add the last operation as "temp"
if (finishUndo("$TEMPORARY")) {
// Instantly remove the added operation
_undoStack.pop_back();
}
}
QStringList UndoManager::getLastFromStack( int count, UndoStack & stack )
{
QStringList ret;
for( int i = stack.size() - 1; i >= 0 && count > 0; i--, count-- )
{
UndoBlock * ub = stack[i];
QString ttl = ub->title();
ret += ttl.isEmpty() ? "Unknown Operation" : ttl;
}
return ret;
}
bool UndoStack::applyLast(UndoStack& counterpart, bool transfer) {
if(steps.empty()) {
//std::cout << "Nothing to Un/Redo" << std::endl;
return(false);
}
//std::cout << "This stack stack now has " << steps.size() << (steps.size()==1?" item":" items") << std::endl;
//TODO: alternative might be to close any open groups
if(nestLevel>0)
throw std::logic_error("Undo history corruption: open undo group at point of application");
do {
if(steps.empty())
throw std::logic_error("Undo history corruption: too many group ending markers");
UndoStep* step=steps.back();
steps.pop_back();
if(nestLevel==0)
levelLengths.back()--;
//std::cout << "Undoing: ";
switch(step->getGroupType()) {
case UndoStep::NORMAL:
//std::cout << step->description() << std::endl;
step->apply();
break;
case UndoStep::BEGIN_GROUP:
//std::cout << "Group beginning" << std::endl;
if(nestLevel==0)
throw std::logic_error("Undo history corruption: too many group beginning markers");
nestLevel--;
//std::cout << "\tLevel is now " << nestLevel << std::endl;
break;
case UndoStep::END_GROUP:
//std::cout << "Group ending" << std::endl;
nestLevel++;
//std::cout << "\tLevel is now " << nestLevel << std::endl;
break;
case UndoStep::SAVE_DELIMITER:
//std::cout << "Save delimiter" << std::endl;
//TODO: Display a dialog here to ask whether the user wants to undo past the last save point
//???: What should be done about older save markers, farther down the stack?
break;
}
if(transfer) {
step->invert();
counterpart.appendChange(step);
}
else
delete step;
} while(nestLevel);
//std::cout << "This stack stack now has " << steps.size() << (steps.size()==1?" item":" items") << std::endl;
//std::cout << "Counterpart stack now has " << counterpart.steps.size() << (counterpart.steps.size()==1?" item":" items") << std::endl;
return(true);
}
bool finishRedo(const std::string& command) {
bool changed = _redoStack.finish(command);
mark_undoables(0);
return changed;
}
void startRedo() {
_redoStack.start("unnamedCommand");
mark_undoables(&_redoStack);
}
std::size_t size() const {
return _undoStack.size();
}
