bool DataManager::undoAction()
{
if ( !canUndo() )
return false;
osg::ref_ptr<ReversibleAction> action = static_cast<ReversibleAction*>( _undoStack.back().get() );
_undoStack.pop_back();
bool undoSucceeded = action->undoAction( this, this );
// if the undo failed, we are probably in some undefined application state, so
// clear out the undo stack just to be safe.
if ( !undoSucceeded )
{
clearUndoActions();
}
if ( undoSucceeded )
{
ViewVector& views = action->getViews();
for( ViewVector::iterator i = views.begin(); i != views.end(); ++i )
i->get()->requestRedraw();
}
return undoSucceeded;
}
bool DataManager::doAction( void* sender, Action* action_, bool reversible )
{
// this ensures that the action will be unref'd and deleted after running
osg::ref_ptr<Action> action = action_;
bool undoInProgress = sender == this;
for( ActionCallbackList::iterator i = _beforeCallbacks.begin(); i != _beforeCallbacks.end(); ++i )
i->get()->operator()( sender, action.get() );
bool actionSucceeded = false;
if ( !action->isCanceled() || undoInProgress )
{
actionSucceeded = action->doAction( sender, this );
if ( !undoInProgress && actionSucceeded )
{
if ( action->isCheckpoint() )
{
clearUndoActions();
}
else if ( reversible && action->isReversible() )
{
_undoStack.push_back( action.get() );
if ( (int)_undoStack.size() > _maxUndoStackSize )
{
_undoStack.pop_front();
}
}
}
//todo: during-action callbacks here? like in pogo?
for( ActionCallbackList::iterator j = _afterCallbacks.begin(); j != _afterCallbacks.end(); ++j )
j->get()->operator()( sender, action.get() );
}
if ( actionSucceeded )
{
ViewVector& views = action_->getViews();
for( ViewVector::iterator i = views.begin(); i != views.end(); ++i )
i->get()->requestRedraw();
}
return actionSucceeded;
}
void TerrainProfileWidget::refreshViews()
{
// to support ON_DEMAND rendering.
for (ViewVector::iterator it = _views.begin(); it != _views.end(); ++it)
it->get()->requestRedraw();
}