Wicket ListMultipleChoice-Beispiel

In Wicket können SieListMultipleChoice verwenden, ummulti select scrollable listbox zu erstellen.

//Java
import org.apache.wicket.markup.html.form.ListMultipleChoice;
...
//choices in list box
private static final List NUMBERS = Arrays.asList(new String[] {
            "Number 1", "Number 2", "Number 3", "Number 4", "Number 5",
            "Number 6" });

//variable to hold the selected multiple values from listbox,
//and make "Number 6" selected as default value
    private ArrayList selectedNumber = new ArrayList(
        Arrays.asList(new String[] { "Number 6" }));

ListMultipleChoice listNumbers = new ListMultipleChoice(
        "number", new Model(selectedNumber), NUMBERS);

//HTML for multiple select listbox

1. Wicket Multiple Select Listbox Beispiel

Beispiel für die Anzeige eines scrollbaren Mehrfachauswahl-Listenfelds über „ListMultipleChoice“ und die Standardeinstellung eines ausgewählten Werts.

package com.example.user;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.ListMultipleChoice;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.model.Model;

public class ListMultipleChoicePage extends WebPage {

    private static final List NUMBERS = Arrays.asList(new String[] {
            "Number 1", "Number 2", "Number 3", "Number 4", "Number 5",
            "Number 6" });

    // Number 6 is selected by default
    private ArrayList selectedNumber = new ArrayList(
            Arrays.asList(new String[] { "Number 6" }));

    public ListMultipleChoicePage(final PageParameters parameters) {

        add(new FeedbackPanel("feedback"));

        ListMultipleChoice listNumbers = new ListMultipleChoice(
                "number", new Model(selectedNumber), NUMBERS);

        listNumbers.setMaxRows(5);

        Form form = new Form("form") {
            @Override
            protected void onSubmit() {

                info("Selected Number : " + selectedNumber);

            }
        };

        add(form);
        form.add(listNumbers);

    }
}

2. Wicket-HTML-Seite

Seite zum Rendern der scrollbaren Mehrfachauswahlliste.






    Wicket ListMultipleChoice example

    
    
        
            [ListMultipleChoice] select "MULTIPLE" of your favor
                number : (Ctrl + left click)