Can not select all when using listbox?

answered 2014-12-15 09:57:14 +0800

terrytornado
9393 ● 3 ● 7 ● 16
http://www.oxitec.de/

Do not use the 'checkmark' attribute. Make your own implementation.

Only a small sample.

zul:

<zk xmlns="&lt;a href=" http:="" www.zkoss.org="" 2005="" zul"="">http://www.zkoss.org/2005/zul" xmlns:h="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:w="http://www.zkoss.org/2005/zk/client" xmlns:n="http://www.zkoss.org/2005/zk/native" xsi:schemaLocation="http://www.zkoss.org/2005/zul http://www.zkoss.org/2005/zul/zul.xsd">

    <window width="500px" height="300px">
        <listbox id="lbListObject" mold="paging" emptyMessage="Không có dữ liệu" pageSize="5"
            apply="org.zkoss.bind.BindComposer" viewModel="@id('vm') @init('com.mysamples.listbox.ListboxCheckAllVM')">
            <listhead>
                <listheader>
                    <checkbox id="chkb_all" label="check all" />
                </listheader>
                <listheader label="Lastname" />
                <listheader label="Firstname" />
            </listhead>

            <listitem></listitem>
        </listbox>

    </window>
</zk>

VM:

public class ListboxCheckAllVM {

    private Listbox listbox;
    private int pageSize = 5;

    @Init
    public void initSetup() {

    }

    @AfterCompose
    public void afterCompose(@ContextParam(ContextType.VIEW) Component view) {

        if (view instanceof Listbox) {
            this.listbox = (Listbox) view;
        }

        if (this.listbox != null) {
            this.listbox.getFellow("chkb_all").addEventListener("onCheck", new CheckAllListener());
            this.listbox.setPageSize(this.pageSize);
            this.listbox.setModel(new ListModelList<Person>(getAllPersons()));
            this.listbox.setItemRenderer(new CheckAllItemRenderer());
        }
    }

    /**
     * Inner Listener class.<br>
     * onCheck for the 'mark all for deleting' Checkbox.
     * 
     */
    private final class CheckAllListener implements SerializableEventListener<Event> {

        private static final long serialVersionUID = 1L;

        @Override
        public void onEvent(Event event) throws Exception {

            Checkbox ckb = (Checkbox) event.getTarget();

            if (ckb.isChecked()) {
                checkAllItems(true);
            } else {
                checkAllItems(false);
            }
        }

    }

    /**
     * EN: Checks/unchecks all items as marked for deleting.<br>
     */
    @SuppressWarnings("unchecked")
    public void checkAllItems(boolean checkAll) {

        List<Listitem> list = this.listbox.getItems();

        if (list.size() > 0) {
            for (Listitem li : list) {
                if (li.getFirstChild().getFirstChild() instanceof Checkbox) {
                    Checkbox cb = (Checkbox) li.getFirstChild().getFirstChild();
                    cb.setChecked(checkAll);
                }
            }
        }
        this.listbox.invalidate();
    }

    public class Person implements Serializable {

        private static final long serialVersionUID = 1L;
        private String lastname;
        private String firstname;

        public Person() {
        }

        public Person(String _lastname, String _firstname) {
            this.lastname = _lastname;
            this.firstname = _firstname;
        }

        public String getLastname() {
            return this.lastname;
        }

        public void setLastname(String _lastname) {
            this.lastname = _lastname;
        }

        public String getFirstname() {
            return this.firstname;
        }

        public void setFirstname(String _firstname) {
            this.firstname = _firstname;
        }
    }

    private List<Person> getAllPersons() {
        List<Person> list = new ArrayList<Person>();
        list.add(new Person("Doe1", "John"));
        list.add(new Person("Doe2", "John"));
        list.add(new Person("Doe3", "John"));
        list.add(new Person("Doe4", "John"));
        list.add(new Person("Doe5", "John"));
        list.add(new Person("Doe6", "John"));
        list.add(new Person("Doe7", "John"));
        list.add(new Person("Doe8", "John"));
        list.add(new Person("Doe9", "John"));

        return list;
    }

}

ListItemRenderer:

public class CheckAllItemRenderer implements ListitemRenderer<Person>, Serializable {

    private static final long serialVersionUID = 1L;

    private Listbox lb;

    @Override
    public void render(Listitem item, Person data, int index) throws Exception {

        Person obj = (Person) data;

        Listcell lc;
        Label lb;
        Checkbox cb;

        // Delete Checkbox
        lc = new Listcell();
        cb = new Checkbox();
        cb.setParent(lc);
        cb.setChecked(false);
        cb.setStyle("padding-left: 3px;");
        cb.setTooltiptext("Mark for delete");
        lc.setParent(item);

        // Lastname
        lc = new Listcell();
        lb = new Label();
        lb.setValue(obj.getLastname());
        lb.setParent(lc);
        lc.setParent(item);

        // Firstname
        lc = new Listcell();
        lb = new Label();
        lb.setValue(obj.getFirstname());
        lb.setParent(lc);
        lc.setParent(item);

    }

}

best Stephan