com.google.devtools.depan.platform.InverseSorter.java Source code

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Here is the source code for com.google.devtools.depan.platform.InverseSorter.java

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/*
 * Copyright 2008 The Depan Project 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 com.google.devtools.depan.platform;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;

/**
 * Reverse the collation order for an existing comparator.
 *
 * @author <a href="leeca@google.com">Lee Carver</a>
 */
public class InverseSorter extends ViewerComparator {

    private ViewerComparator sorter;

    public InverseSorter(ViewerComparator sorter) {
        this.sorter = sorter;
    }

    @Override
    public int compare(Viewer viewer, Object e1, Object e2) {
        return -sorter.compare(viewer, e1, e2);
    }
}