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

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

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/*
 * Copyright 2012 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.Iterator;
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.panel.FeedbackPanel;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.data.DataView;
import org.apache.wicket.markup.repeater.data.IDataProvider;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.request.mapper.parameter.PageParameters;

/**
 *
 * @author Marcus Geiger
 */
public class PlainDataView extends WebPage {
    private static final long serialVersionUID = 1L;

    private int submitCount = 0;

    public PlainDataView(PageParameters parameters) {
        super(parameters);
    }

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

        add(new FeedbackPanel("feedback"));

        final DataView<Integer> dataView = new DataView<Integer>("list", new IntegerDataProvider()) {
            private static final long serialVersionUID = 1L;

            @Override
            protected void populateItem(Item item) {
                item.add(new Label("text", item.getDefaultModelObjectAsString()));
            }
        };

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

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

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

            @Override
            public void onSubmit() {
                IntegerDatabase db = DatabaseLocator.locate();
                if (db.size() > 0) {
                    db.removeLast();
                } else {
                    error("No more items.");
                }
            }
        };

        add(form);
        form.add(dataView);
        form.add(submitButton);

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

            @Override
            public void onSubmit() {
                info("Database restored");
                DatabaseLocator.locate().restore();
            }
        });
    }

    private static class IntegerDataProvider implements IDataProvider<Integer> {
        private static final long serialVersionUID = 1L;

        public Iterator<? extends Integer> iterator(int first, int count) {
            return DatabaseLocator.locate().iterator(first, count);
        }

        public int size() {
            return DatabaseLocator.locate().size();
        }

        public IModel<Integer> model(Integer n) {
            return new Model<Integer>(n);
        }

        public void detach() {
        }
    }
}