/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.javafx.collections;

import java.util.Arrays;
import java.util.List;

public class ChangeHelper {
    public static String addRemoveChangeToString(int from, int to, List<?> list, List<?> removed) {
        StringBuilder b = new StringBuilder();

        if (removed.isEmpty()) {
            b.append(list.subList(from, to));
            b.append(" added at ").append(from);
        } else {
            b.append(removed);
            if (from == to) {
                b.append(" removed at ").append(from);
            } else {
                b.append(" replaced by ");
                b.append(list.subList(from, to));
                b.append(" at ").append(from);
            }
        }
        return b.toString();
    }

    public static String permChangeToString(int[] permutation) {
        return "permutated by " + Arrays.toString(permutation);
    }

    public static String updateChangeToString(int from, int to) {
        return "updated at range [" + from + ", " + to + ")";
    }
}
