/*

 * Hedgewars for Android. An Android port of Hedgewars, a free turn based strategy game

 * Copyright (C) 2012 Simeon Maxein <smaxein@googlemail.com>

 *

 * This program 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.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

 */

package org.hedgewars.hedgeroid.util;

import java.util.Collections;

import java.util.Map;

import java.util.TreeMap;

import android.database.DataSetObservable;

public class ObservableTreeMap<K,V> extends DataSetObservable {

    private final Map<K, V> map = new TreeMap<K, V>();

    public void replaceContent(Map<? extends K, ? extends V> newMap) {

        map.clear();

        map.putAll(newMap);

        notifyChanged();

    }

    public void put(K key, V value) {

        map.put(key, value);

        notifyChanged();

    }

    public V get(K key) {

        return map.get(key);

    }

    public void remove(K key) {

        if(map.remove(key) != null) {

            notifyChanged();

        }

    }

    public void clear() {

        if(!map.isEmpty()) {

            map.clear();

            notifyChanged();

        }

    }

    public Map<K, V> getMap() {

        return Collections.unmodifiableMap(map);

    }

}