zk listbox 点击列标题实现排序功能

前台(test.zul)：

<?page title="测试" contentType="text/html;charset=UTF-8"?>
<z:zk xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:z="http://www.zkoss.org/2005/zul"
        xsi:schemaLocation="http://www.zkoss.org/2005/zul http://www.zkoss.org/2005/zul">

<z:window id="gradingWin" border="none" apply="test.ListboxCtrl">
<z:listbox id="testListbox">
    <z:listhead>
        <z:listheader id="fullName" label="Full Name"/>
        <z:listheader id="age" label="Age"/>
    </z:listhead>
</z:listbox>
<z:label style="color:red;font-size:30px;" value="修改fullName为wwee的Age为50"/>
<z:button id="testBtn" label="修改"></z:button>
</z:window>
</z:zk>

后台(test.java):

package test;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;

import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventListener;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.util.GenericForwardComposer;
import org.zkoss.zul.Button;
import org.zkoss.zul.ListModelList;
import org.zkoss.zul.Listbox;
import org.zkoss.zul.Listcell;
import org.zkoss.zul.Listheader;
import org.zkoss.zul.Listitem;
import org.zkoss.zul.ListitemRenderer;
import org.zkoss.zul.Window;

public class ListboxCtrl extends GenericForwardComposer<Component>{

    private static final long serialVersionUID = 1L;

    private ListModelList<Person> testmodel;
    private Listbox testListbox;
    private Listheader fullName;
    private Listheader age;

    private Button testBtn;

    Window gradingWin;

    @Override
    public void doAfterCompose(Component comp) throws Exception {

        // TODO Auto-generated method stub
        super.doAfterCompose(comp);

        //填充测试数据
        Person person = new Person();
        List<Person> persons = person.getPersons();

        // 设置数据模型
        testmodel = new ListModelList<Person>(persons);
        testListbox.setModel(testmodel);
        testListbox.setItemRenderer(new testItemRenderer());

        //设置分页
        testListbox.setMold("paging");
        testListbox.getPagingChild().setAutohide(false);
        fullName.setSort("auto");//必须设置，否则无法使用升、降序排列功能(zk规定)
        age.setSort("auto");//同上

        // 按姓名升序
        ComparatorName comparatorName = new ComparatorName();
        fullName.setSortAscending(comparatorName);
        // 按姓名降序
        ComparatorDescName comparatorDescName = new ComparatorDescName();
        fullName.setSortDescending(comparatorDescName);

        // 按年龄升序
        ComparatorAge comparatorAge = new ComparatorAge();
        age.setSortAscending(comparatorAge);
        // 按年龄降序
        ComparatorDescAge comparatorDescAge = new ComparatorDescAge();
        age.setSortDescending(comparatorDescAge);

        testBtn.addEventListener(Events.ON_CLICK, new EventListener<Event>() {

            @Override
            public void onEvent(Event event) throws Exception {
                // TODO Auto-generated method stub
                ListModelList<Person> model = (ListModelList) testListbox.getModel();
                for (int i = 0; i < model.size(); i++) {
                    Person c = (Person) model.get(i);
                    if (c.getFullName().equals("wwee")) {
                        c.setAge(50);
                        model.set(i, c);
                        break;
                    }
                }
            }
        });
    }

    public class testItemRenderer implements ListitemRenderer<Person>{

        @Override
        public void render(Listitem item, Person person, int index)
                throws Exception {
            // TODO Auto-generated method stub

            new Listcell(person.getFullName()).setParent(item);
            new Listcell(person.getAge()+"").setParent(item);
            }
    }

    public class ComparatorAge implements Comparator<Person>{  

        @Override
        public int compare(Person o1, Person o2) {
            // TODO Auto-generated method stub
            if (o1.getAge() > o2.getAge()) {
                return 1;
            }else if (o1.getAge() < o2.getAge()){
                return -1;
            }else {
                return 0;
            }
        }
    }

    public class ComparatorDescAge implements Comparator<Person>{  

            @Override
            public int compare(Person o1, Person o2) {
                // TODO Auto-generated method stub
                if (o1.getAge() < o2.getAge()) {
                    return 1;
                }else if (o1.getAge() > o2.getAge()){
                    return -1;
                }else {
                    return 0;
                }
            }
        }

    public class ComparatorName implements Comparator<Person>{

        @Override
        public int compare(Person o1, Person o2) {
            // TODO Auto-generated method stub

            return o1.getFirstName().compareTo(o2.getFirstName());
        }
    }

    public class ComparatorDescName implements Comparator<Person>{

        @Override
        public int compare(Person o1, Person o2) {
            // TODO Auto-generated method stub

            return o2.getFirstName().compareTo(o1.getFirstName());
        }
    }
}

class Person implements Comparator <Person> {

    private String firstName;
    private String lastName;
    private String fullName;
    private int age;
    List<Person> persons = new ArrayList<Person>();

    public Person(String f, String l, int a) {
          firstName = f;
          lastName = l;
          age = a;
          fullName = f+l;
    }

    public Person(){
        persons.add(new Person("a", "b", 2));
        persons.add(new Person("a", "b", 3));
        persons.add(new Person("a", "b", 4));
        persons.add(new Person("cc", "dd", 2));
        persons.add(new Person("cc", "dd", 3));
        persons.add(new Person("cc", "dd", 4));
        persons.add(new Person("ww", "ee", 23));
    }

    public String getFirstName() {
          return firstName;
    }
    public String getLastName() {
          return lastName;
    }
    public String getFullName() {
          return fullName;
    }
    public void setFullName(String fullName){
        this.fullName = fullName;
    }
    public void setAge(int age){
        this.age = age;
    }
    public int getAge() {
          return age;
    }
    public List<Person> getPersons(){
        return persons;
    }

    @Override
    public int compare(Person o1, Person o2) {
        // TODO Auto-generated method stub
        return 0;
    }
}