undo-stack-obs.hpp

#pragma once

#include <json11/json11.hpp>

#include <QString>

#include <functional>
#include <vector>
#include <string>
#include <deque>

typedef std::function<void(const json11::Json &s)> undo_redo_cb;

struct undo_item {
	QString      name;
	json11::Json undo_data;
	json11::Json redo_data;
	undo_redo_cb undo;
	undo_redo_cb redo;
};

class undo_stack {
	std::deque<undo_item> items;
	size_t                index = 0;

public:
	void add_action(const QString &name,
	                undo_redo_cb   undo,
	                undo_redo_cb   redo,
	                json11::Json   undo_data,
	                json11::Json   redo_data);
	void undo(QString &undo_name, QString &redo_name);
	void redo(QString &undo_name, QString &redo_name);

	inline void clear()
	{
		items.clear();
		index = 0;
	}
};