/*
* Copyright (C) 2015 Patryk Strach
*
* This file is part of Virtual Slide Viewer.
*
* Virtual Slide Viewer is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* Virtual Slide Viewer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Virtual Slide Viewer.
* If not, see <http://www.gnu.org/licenses/>.
*/
package virtualslideviewer.undo;
/**
* An user action which can be undone.
*/
public interface UndoableAction
{
/**
* Executes the action.
*/
public void execute();
/**
* Undoes the action.
*/
public void undo();
/**
* Returns user-friendly string explaining what has been done by the {@link #execute()} method.
*/
public String getExecuteMessage();
/**
* Returns user-friendly string explaining what happened in the {@link #undo()} method.
*/
public String getUndoMessage();
}