org.wicketstuff.minis.ListViewFormComponentReuseManagerPage.java Source code

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Here is the source code for org.wicketstuff.minis.ListViewFormComponentReuseManagerPage.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.wicketstuff.minis;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.apache.wicket.request.mapper.parameter.PageParameters;
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.RequiredTextField;
import org.apache.wicket.markup.html.form.SubmitLink;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.model.PropertyModel;
import org.wicketstuff.minis.util.ListViewFormComponentReuseManager;

/**
 * @author <a href="http://sebthom.de/">Sebastian Thomschke</a>
 */
public class ListViewFormComponentReuseManagerPage extends WebPage {
    public static class Row implements Serializable {
        private static final long serialVersionUID = 1L;

        public String key;
        public String value;
    }

    private static final long serialVersionUID = 1L;

    private final List<Row> rows = new ArrayList<Row>();

    @SuppressWarnings("serial")
    public ListViewFormComponentReuseManagerPage(final PageParameters parameters) {
        final Form<List<Row>> form = new Form<List<Row>>("rowsForm");
        add(form);

        form.add(new Button("addRowButton") {
            @Override
            public void onSubmit() {
                rows.add(new Row());
            }
        }.setDefaultFormProcessing(false));

        form.add(new ListView<Row>("rowsList", new PropertyModel<List<Row>>(this, "rows")) {
            @Override
            protected void populateItem(final ListItem<Row> item) {
                final Row row = item.getModelObject();

                item.add(new Label("index", new AbstractReadOnlyModel<Integer>() {
                    @Override
                    public Integer getObject() {
                        return item.getIndex() + 1;
                    }
                }));
                ListViewFormComponentReuseManager.addOrReuse(item,
                        new RequiredTextField<String>("key", new PropertyModel<String>(row, "key")));
                ListViewFormComponentReuseManager.addOrReuse(item,
                        new TextField<String>("value", new PropertyModel<String>(row, "value")));

                item.add(new SubmitLink("removeRowLink") {
                    @Override
                    public void onSubmit() {
                        getList().remove(item.getModelObject());
                        getParent().getParent().removeAll();
                    };
                }.setDefaultFormProcessing(false));
                item.add(new SubmitLink("moveUpLink") {
                    @Override
                    public boolean isVisible() {
                        return getList().indexOf(item.getModelObject()) > 0;
                    };

                    @Override
                    public void onSubmit() {
                        final int index = getList().indexOf(item.getModelObject());
                        Collections.swap(getList(), index, index - 1);
                        getParent().getParent().removeAll();
                    };
                }.setDefaultFormProcessing(false));
                item.add(new SubmitLink("moveDownLink") {
                    @Override
                    public boolean isVisible() {
                        return getList().indexOf(item.getModelObject()) < getList().size() - 1;
                    };

                    @Override
                    public void onSubmit() {
                        final int index = getList().indexOf(item.getModelObject());
                        Collections.swap(getList(), index, index + 1);
                        getParent().getParent().removeAll();
                    };
                }.setDefaultFormProcessing(false));
            }
        }.setReuseItems(true));
    }
}