package org.hedgewars.hedgeroid.netplay;

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);

	}

}