private static final String STATE_TEAMS_ALREADY_IN_GAME = "teamAlreadyInGame";

    private ArrayList<String> teamsAlreadyInGame;

    private List<Team> availableTeams;

    private Listener listener;

    public static interface Listener {

        void onTeamAddDialogSubmitted(Team newTeam);

    }

    public TeamAddDialog() {

        // Only for reflection-based instantiation by the framework

    }

    TeamAddDialog(Collection<String> teamsAlreadyInGame) {

        this.teamsAlreadyInGame = new ArrayList<String>(teamsAlreadyInGame);

    }

    @Override

    public void onAttach(Activity activity) {

        super.onAttach(activity);

        try {

            listener = (Listener) activity;

        } catch(ClassCastException e) {

            throw new ClassCastException("Activity " + activity + " must implement TeamAddDialog.Listener to use TeamAddDialog.");

        }

    }

    @Override

    public void onDetach() {

        super.onDetach();

        listener = null;

    }

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        if(savedInstanceState != null) {

            teamsAlreadyInGame = savedInstanceState.getStringArrayList(STATE_TEAMS_ALREADY_IN_GAME);

        }

        availableTeams = new ArrayList<Team>();

        List<Team> teams = FrontendDataUtils.getTeams(getActivity());

        for(Team team : teams) {

            if(!teamsAlreadyInGame.contains(team.name)) {

                availableTeams.add(team);

            }

        }

        Collections.sort(availableTeams, Team.NAME_ORDER);

    }

    // TODO use icons for the teams (corresponding to botlevel)

    @Override

    public Dialog onCreateDialog(Bundle savedInstanceState) {

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        builder.setTitle(R.string.dialog_addteam_title);

        builder.setIcon(R.drawable.human);

        String[] teamNames = new String[availableTeams.size()];

        for(int i=0; i<availableTeams.size(); i++) {

            teamNames[i] = availableTeams.get(i).name;

        }

        builder.setItems(teamNames, new OnClickListener() {

            public void onClick(DialogInterface dialog, int which) {

                listener.onTeamAddDialogSubmitted(availableTeams.get(which));

            }

        });

        return builder.create();

    }

    @Override

    public void onSaveInstanceState(Bundle outState) {

        super.onSaveInstanceState(outState);

        outState.putStringArrayList(STATE_TEAMS_ALREADY_IN_GAME, teamsAlreadyInGame);

    }