Package org.apache.wicket.examples.library

Source Code of org.apache.wicket.examples.library.Home

/*
* 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.apache.wicket.examples.library;

import java.util.ArrayList;
import java.util.List;

import org.apache.wicket.PageParameters;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.PageableListView;
import org.apache.wicket.markup.html.navigation.paging.PagingNavigator;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;


/**
* Page that displays a list of books and lets the user re-order them.
*
* @author Jonathan Locke
*/
public final class Home extends AuthenticatedWebPage
{
  /**
   * Constructor
   *
   * @param parameters
   */
  public Home(final PageParameters parameters)
  {
    // Add table of books
    final PageableListView<Book> listView;
    add(listView = new PageableListView<Book>("books", new PropertyModel<List<Book>>(this,
      "books"), 4)
    {
      @Override
      public void populateItem(final ListItem<Book> listItem)
      {
        final Book book = listItem.getModelObject();
        listItem.add(BookDetails.link("details", book, getLocalizer().getString(
          "noBookTitle", this)));
        listItem.add(new Label("author", new Model<Book>(book)));
        listItem.add(moveUpLink("moveUp", listItem));
        listItem.add(moveDownLink("moveDown", listItem));
        listItem.add(removeLink("remove", listItem));
        listItem.add(EditBook.link("edit", book.getId()));
      }
    });
    add(new PagingNavigator("navigator", listView));
  }

  /**
   *
   * @return List of books
   */
  public List<Book> getBooks()
  {
    // Note: checkAccess() (and thus login etc.) happen after the Page
    // has been instantiated. Thus, you can not realy on user != null.
    // Note2: In any case, all components must be associated with a
    // wicket tag.
    User user = getLibrarySession().getUser();
    if (user == null)
    {
      return new ArrayList<Book>();
    }

    return user.getBooks();
  }
}
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