1 package org.hedgewars.hedgeroid.netplay;

     2 

     3 import java.util.Collections;

     4 import java.util.Iterator;

     5 import java.util.LinkedList;

     6 import java.util.List;

     7 

     8 public class PlayerList {

     9 	private List<Player> list = new LinkedList<Player>();

    10 	private List<Observer> observers = new LinkedList<Observer>();

    11 	private long nextId = 1;

    12 	

    13 	public List<Player> getList() {

    14 		return Collections.unmodifiableList(list);

    15 	}

    16 	

    17 	public void observePlayerList(Observer plo) {

    18 		observers.add(plo);

    19 	}

    20 	

    21 	public void unobservePlayerList(Observer plo) {

    22 		observers.remove(plo);

    23 	}

    24 	

    25 	void addPlayer(String name) {

    26 		Player p = new Player(name, nextId++);

    27 		list.add(p);

    28 		List<Player> unmodifiableList = Collections.unmodifiableList(list);

    29 		for(Observer o : observers) {

    30 			o.itemAdded(unmodifiableList, p);

    31 		}

    32 	}

    33 	

    34 	void removePlayer(String name) {

    35 		for(Iterator<Player> iter = list.iterator(); iter.hasNext();) {

    36 			Player p = iter.next();

    37 			if(name.equals(p.name)) {

    38 				iter.remove();

    39 				List<Player> unmodifiableList = Collections.unmodifiableList(list);

    40 				for(Observer o : observers) {

    41 					o.itemDeleted(unmodifiableList, p);

    42 				}

    43 			}

    44 		}

    45 	}

    46 

    47 	public static interface Observer {

    48 		void itemAdded(List<Player> newList, Player added);

    49 		void itemDeleted(List<Player> newList, Player deleted);

    50 	}

    51 }