Mapping.java

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/*
 * This file is part of JXClient, the Fullscreen Java Crossfire Client.
 *
 * JXClient is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * JXClient 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JXClient; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Copyright (C) 2005-2008 Yann Chachkoff.
 * Copyright (C) 2006-2011 Andreas Kirschbaum.
 */

package com.realtime.crossfire.jxclient.util;

import java.util.ArrayList;
import java.util.List;
import org.jetbrains.annotations.NotNull;

public class Mapping {

    @NotNull
    private final List<Integer> mapping = new ArrayList<>();

    public void clear() {
        mapping.clear();
    }

    public void insert(final int src, final int dst) {
        for (int i = 0; i < mapping.size(); i++) {
            final int value = mapping.get(i);
            if (value >= dst) {
                mapping.set(i, value+1);
            }
        }
        mapping.add(src, dst);
    }

    public void remove(final int src) {
        final int dst = mapping.get(src);
        mapping.remove(src);
        for (int i = 0; i < mapping.size(); i++) {
            final int value = mapping.get(i);
            if (value >= dst) {
                mapping.set(i, value-1);
            }
        }
    }

    public int get(final int src) {
        return mapping.get(src);
    }

}