org.antbear.jee.wicket.PlainList.java Source code

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Here is the source code for org.antbear.jee.wicket.PlainList.java

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/*
 * Copyright 2011 Marcus Geiger.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.antbear.jee.wicket;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.form.Button;
import org.apache.wicket.markup.html.form.Form;
import org.apache.wicket.markup.html.form.SubmitLink;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.PropertyListView;
import org.apache.wicket.markup.html.panel.FeedbackPanel;
import org.apache.wicket.request.mapper.parameter.PageParameters;

/**
 * Plain PropertyListView hacked to be updated on form submit.
 *
 * @author Marcus Geiger
 */
public class PlainList extends WebPage {
    private static final long serialVersionUID = 1L;

    private int submitCounter = 0;

    public PlainList(final PageParameters parameters) {
        super(parameters);
    }

    @Override
    protected void onInitialize() {
        super.onInitialize();

        add(new FeedbackPanel("feedback"));

        final List<Integer> listData = getList();
        final PropertyListView<Integer> listView = new PropertyListView<Integer>("list", listData) {
            private static final long serialVersionUID = 1L;

            @Override
            protected void populateItem(ListItem<Integer> item) {
                item.add(new Label("text", item.getDefaultModelObjectAsString()));
                item.add(this.removeLink("remove", item));
            }
        };

        final Form<?> form = new Form<Void>("form") {
            private static final long serialVersionUID = 1L;

            @Override
            protected void onSubmit() {
                ++submitCounter;
                info("Form submitted " + submitCounter + " times");
            }
        };

        final Button submitButton = new Button("submit") {
            private static final long serialVersionUID = 1L;

            @Override
            public void onSubmit() {
                if (listData.size() > 0) {
                    listData.remove(listData.size() - 1);
                    listView.setModelObject(listData);
                } else {
                    error("No more items.");
                }
            }
        };

        add(form);
        form.add(listView);
        form.add(submitButton);

        form.add(new SubmitLink("restoreDatabase") {
            private static final long serialVersionUID = 1L;

            @Override
            public void onSubmit() {
                info("Database restored");
                DatabaseLocator.locate().restore();
                List<Integer> l = getList();
                listView.setModelObject(l);
            }
        });
    }

    private List<Integer> getList() {
        ArrayList<Integer> l = new ArrayList<Integer>();
        IntegerDatabase database = DatabaseLocator.locate();
        Iterator<? extends Integer> iterator = database.iterator(0, database.size());
        while (iterator.hasNext()) {
            Integer n = iterator.next();
            l.add(n);
        }
        return l;
    }
}