/*
* Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
*
* This file is part of Loop Habit Tracker.
*
* Loop Habit Tracker 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.
*
* Loop Habit Tracker 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.isoron.uhabits.commands;
/**
* A Command represents a desired set of changes that should be performed on the
* models.
* <p>
* A command can be executed and undone. Each of these operations also provide
* an string that should be displayed to the user upon their completion.
* <p>
* In general, commands should always be executed by a {@link CommandRunner}.
*/
public abstract class Command
{
public abstract void execute();
public Integer getExecuteStringId()
{
return null;
}
public Integer getUndoStringId()
{
return null;
}
public abstract void undo();
}