package ppa2_cv05_1_a14b0537p;

/**
 *
 * @author Milan
 */
public class Zamestnanci
{

    Zamestnanec dummy ;
    Zamestnanec iterator;
    public Zamestnanci()
    {

        this.dummy = new Zamestnanec("qwerty",0);
        this.dummy.next = this.dummy;
        this.dummy.prev = this.dummy;
        this.iterator = dummy;

    }
    public void naZacatek()
    {

    }
    public boolean jePrvni()
    {

        return (iterator.prev==dummy && iterator !=dummy);
    }
    public boolean jePosledni()
    {
        return(iterator.next==dummy && iterator !=dummy);

    }
    public void vlozZa(Zamestnanec pepa)
    {
        pepa.next=iterator.next;
        pepa.prev=iterator.prev;
        iterator=iterator.prev;
        iterator.next=pepa;
        iterator.next=pepa.next;
        iterator.next=pepa.next;
        iterator.prev=pepa;
        //budu soupat iterator a tady zmenim 4 pointery
    }
    public void vlozPred(Zamestnanec pepa)
    {

        pepa.next=iterator.next;
        pepa.prev=iterator.prev;
        iterator=iterator.next;
        iterator.next=pepa;
        iterator.next=pepa.prev;
        iterator.next=pepa.prev;
        iterator.prev=pepa;
    }
    public void naPredchoziPrvek()
    {
        iterator=iterator.prev;
    }
    public void naDalsiPrvek()
    {
        iterator=iterator.next;
    }
}