/*
* Copyright (c) Thomas Parker, 2016.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This program 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
package pcgen.cdom.formula;
import java.util.EventListener;
/**
* A VariableListener is an object that listens for VariableChangeEvents as sent
* by a MonitorableVariableStore.
*
* @param <T>
* The Format of the underlying Variable to which the
* VariableListener is listening
*/
@FunctionalInterface
public interface VariableListener<T> extends EventListener
{
/**
* Sends a VariableChangeEvent to the VariableListener.
*
* @param vcEvent
* The VariableChangeEvent indicating the change that took place
* to a Variable
*/
public void variableChanged(VariableChangeEvent<T> vcEvent);
}