// pointers07.cpp
#include "Undo.h" // Undo class definition
#include <vector>

class UndoManager
{
public:
	~UndoManager()
	{
		// delete all Undo objects
		for (std::vector<Undo*>::iterator it = m_Actions.begin(), end = m_Actions.end(); it != end; ++it)
			delete *it;
		m_Actions.clear();
	}

	void AddUndoObject(Undo* p)
	{
		m_Actions.push_back(p);
	}

	void UndoLastAction(std::vector<std::vector<pixelValue> >& bitmap)
	{
		// remove last action from list and undo it
		Undo* p = m_Actions.back();
		m_Actions.pop_back();
		p->Restore(bitmap);
		delete p;
	}

private:
	std::vector<Undo*> m_Actions;
};