/**
* Copyright (C) 2010 Asterios Raptis
*
* 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 de.alpharogroup.wicket.components.listview;
import java.util.List;
import org.apache.wicket.Component;
import org.apache.wicket.markup.html.list.ListItem;
import org.apache.wicket.markup.html.list.ListView;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.util.ListModel;
import org.apache.wicket.util.lang.Args;
import de.alpharogroup.wicket.base.BasePanel;
import lombok.Getter;
/**
* The Class ListViewPanel takes a {@link ListView} of a generic type.
*
* @param <T>
* the generic type of model object
*/
public abstract class ListViewPanel<T> extends BasePanel<List<T>>
{
/** The Constant serialVersionUID. */
private static final long serialVersionUID = 1L;
/** The list view. */
@Getter
private final ListView<T> listView;
/**
* Instantiates a new {@link ListViewPanel}.
*
* @param id
* the id
* @param model
* the model
*/
public ListViewPanel(final String id, final IModel<List<T>> model)
{
super(id, Args.notNull(model, "model"));
add(listView = newListView("listView", model));
}
/**
* Instantiates a new {@link ListViewPanel}.
*
* @param id
* the id
* @param list
* the list
*/
public ListViewPanel(final String id, final List<T> list)
{
this(id, new ListModel<>(list));
}
/**
* Abstract factory method for creating the new {@link Component} in the list. This method is
* invoked in the {@link ListView#populateItem(ListItem)} from the derived classes and can be
* overridden so users can provide their own version of a new {@link Component} in the list.
*
* @param id
* the id
* @param item
* the item
* @return the new {@link Component} in the list.
*/
protected abstract Component newListComponent(final String id, final ListItem<T> item);
/**
* Factory method for creating a new {@link ListView}. This method is invoked in the constructor
* from the derived classes and can be overridden so users can provide their own version of the
* new {@link ListView}.
*
* @param id
* the id
* @param model
* the model
* @return the new {@link ListView}.
*/
protected ListView<T> newListView(final String id, final IModel<List<T>> model)
{
final ListView<T> listView = new ListView<T>(id, model)
{
/** The Constant serialVersionUID. */
private static final long serialVersionUID = 1L;
/**
* {@inheritDoc}
*/
@Override
protected void populateItem(final ListItem<T> item)
{
item.add(newListComponent("item", item));
}
};
listView.setReuseItems(true);
return listView;
}
}