/*
* 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.extensions.markup.html.repeater.data.table;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.extensions.markup.html.repeater.data.sort.ISortStateLocator;
import org.apache.wicket.extensions.markup.html.repeater.data.sort.OrderByBorder;
import org.apache.wicket.extensions.markup.html.repeater.data.table.DataTable.CssAttributeBehavior;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.repeater.Item;
import org.apache.wicket.markup.repeater.RefreshingView;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
/**
* Toolbars that displays column headers. If the column is sortable a sortable header will be
* displayed.
*
* @param <S>
* the type of the sorting parameter
* @see DefaultDataTable
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public class HeadersToolbar<S> extends AbstractToolbar
{
private static final long serialVersionUID = 1L;
/**
* Constructor
*
* @param <T>
* the column data type
* @param table
* data table this toolbar will be attached to
* @param stateLocator
* locator for the ISortState implementation used by sortable headers
*/
public <T> HeadersToolbar(final DataTable<T, S> table, final ISortStateLocator<S> stateLocator)
{
super(table);
RefreshingView<IColumn<T, S>> headers = new RefreshingView<IColumn<T, S>>("headers")
{
private static final long serialVersionUID = 1L;
@Override
protected Iterator<IModel<IColumn<T, S>>> getItemModels()
{
List<IModel<IColumn<T, S>>> columnsModels = new LinkedList<>();
for (IColumn<T, S> column : table.getColumns())
{
columnsModels.add(Model.of(column));
}
return columnsModels.iterator();
}
@Override
protected void populateItem(Item<IColumn<T, S>> item)
{
final IColumn<T, S> column = item.getModelObject();
WebMarkupContainer header;
if (column.isSortable())
{
header = newSortableHeader("header", column.getSortProperty(), stateLocator);
}
else
{
header = new WebMarkupContainer("header");
}
if (column instanceof IStyledColumn)
{
CssAttributeBehavior cssAttributeBehavior = new DataTable.CssAttributeBehavior()
{
private static final long serialVersionUID = 1L;
@Override
protected String getCssClass()
{
return ((IStyledColumn<?, S>)column).getCssClass();
}
};
header.add(cssAttributeBehavior);
}
if (column.getHeaderColspan() > 1) {
header.add(AttributeModifier.replace("colspan", column.getHeaderColspan()));
}
if (column.getHeaderRowspan() > 1) {
header.add(AttributeModifier.replace("rowspan", column.getHeaderRowspan()));
}
item.add(header);
item.setRenderBodyOnly(true);
header.add(column.getHeader("label"));
}
};
add(headers);
}
/**
* Factory method for sortable header components. A sortable header component must have id of
* <code>headerId</code> and conform to markup specified in <code>HeadersToolbar.html</code>
*
* @param headerId
* header component id
* @param property
* property this header represents
* @param locator
* sort state locator
* @return created header component
*/
protected WebMarkupContainer newSortableHeader(final String headerId, final S property,
final ISortStateLocator<S> locator)
{
return new OrderByBorder<S>(headerId, property, locator)
{
private static final long serialVersionUID = 1L;
@Override
protected void onSortChanged()
{
getTable().setCurrentPage(0);
}
};
}
}