org.dizitart.no2.event.ChangeAware Maven / Gradle / Ivy
/*
*
* Copyright 2017-2018 Nitrite author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.dizitart.no2.event;
/**
* Interface to be implemented by collections that wish to be aware
* of any data modification.
*
* @since 1.0
* @author Anindya Chatterjee.
* @see ChangeType
*/
public interface ChangeAware {
/**
* Registers a {@link ChangeListener} instance to listen to any
* changes.
*
* @param listener the listener
*/
void register(ChangeListener listener);
/**
* De-registers an already registered {@link ChangeListener} instance
* to listen to any changes.
*
* @param listener the listener
*/
void deregister(ChangeListener listener);
}