/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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 com.vaadin.shared.data.sort;
import java.io.Serializable;
/**
* Describes sorting direction.
*
* @since 7.4
* @author Vaadin Ltd
*/
public enum SortDirection implements Serializable {
/**
* Ascending (e.g. A-Z, 1..9) sort order
*/
ASCENDING {
@Override
public SortDirection getOpposite() {
return DESCENDING;
}
},
/**
* Descending (e.g. Z-A, 9..1) sort order
*/
DESCENDING {
@Override
public SortDirection getOpposite() {
return ASCENDING;
}
};
/**
* Get the sort direction that is the direct opposite to this one.
*
* @return a sort direction value
*/
public abstract SortDirection getOpposite();
}