#pragma once
#include <stack>
#include "Event.h"

class Buffer;

/// Store events and handle undo/redo
class History {
	std::stack<Event*> m_done;
	std::stack<Event*> m_undone;

	/// True when in undo() or redo()
	bool m_working = false;

public:
	/// Add an event to history
	void log_event(Event* ev);

	/// Undo latest event
	bool undo(Buffer& buf);

	/// Redo latest event
	bool redo(Buffer& buf);
};