PlayerList.java

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.lang.Validate;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;

public class PlayerList implements Iterable<Player> {
	
	private List<String> players = new ArrayList<String>();
	
	public PlayerList() {}
	
	public PlayerList(final List<String> players) {
		players.addAll(players);
	}
	
	public void add(Player... players) {
		Validate.notNull(players, "Players cannot be null");
		for (Player p : players) {
			this.players.add(p.getName());
		}
	}
	
	public void add(Collection<Player> players) {
		Validate.notNull(players, "Players cannot be null");
		for (Player p : players) {
			this.players.add(p.getName());
		}
	}
	
	public void addByName(Collection<String> players) {
		Validate.notNull(players, "Players cannot be null");
		players.addAll(players);
	}
	
	public void remove(Player... players) {
		Validate.notNull(players, "Players cannot be null");
		for (Player p : players) {
			this.players.remove(p.getName());
		}
	}
	
	public boolean contains(Player player) {
		Validate.notNull(players, "Player cannot be null");
		return players.contains(player.getName());
	}
	
	public List<String> getNameList() {
		return new ArrayList<String>(players);
	}
	
	public void shuffle() {
		Collections.shuffle(players);
	}
	
	public void clear() {
		players.clear();
	}
	
	public int size() {
		return players.size();
	}
	
	public Iterator<Player> iterator() {
		return new PlayerListIterator(players);
	}
	
	private class PlayerListIterator implements Iterator<Player> {
		
		private final List<String> players, playersFinal;
		private int cursor = 0;
		
		public PlayerListIterator(List<String> players) {
			this.players = players;
			this.playersFinal = new ArrayList<String>(players);
		}
		
		public boolean hasNext() {
			return cursor < playersFinal.size();
		}
		
		public Player next() {
			return Bukkit.getPlayer(playersFinal.get(cursor++));
		}
		
		public void remove() {
			players.remove(playersFinal.get(cursor));
		}
		
	}
}