/*
 * Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
 *
 * This file is part of Zrythm
 *
 * Zrythm is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Zrythm is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Zrythm.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef __UNDO_UNDO_MANAGER_H__
#define __UNDO_UNDO_MANAGER_H__

#include "utils/stack.h"

#define UNDO_MANAGER (&PROJECT->undo_manager)

typedef struct UndoableAction UndoableAction;

typedef struct UndoManager
{
  Stack *   undo_stack;
  Stack *   redo_stack;
} UndoManager;

void
undo_manager_init (UndoManager * self);

/**
 * Undo last action.
 */
void
undo_manager_undo (UndoManager * self);

/**
 * Redo last undone action.
 */
void
undo_manager_redo (UndoManager * self);

/**
 * Performs the action and pushes it to the undo stack.
 */
void
undo_manager_perform (UndoManager *    self,
                      UndoableAction * action);

#endif
