/*
* 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 org.apache.wicket.behavior.Behavior;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.markup.repeater.RepeatingView;
/**
* A panel that renders <colgroup> with <col> elements
* inside it.
*
* The columns can be used to style the whole table column.
*
* <p>
* <strong>Important</strong>: this component requires
* {@link org.apache.wicket.settings.MarkupSettings#getStripWicketTags()}
* to return {@code true}, otherwise the browsers break the rendering of
* the HTML elements. For example Google Chrome renders two <colgroup>
* elements.
* </p>
*
* @see DataTable#getColGroup()
*/
public class ColGroup extends Panel
{
private static final long serialVersionUID = 1L;
private final RepeatingView colgroupCols;
public ColGroup(String id)
{
super(id);
this.colgroupCols = new RepeatingView("col");
add(colgroupCols);
}
/**
* Adds a column to the group.
*
* <p>Usage:
* <pre>
* <code>
* colgroup.addCol(colgroup.new Col(AttributeModifier.append("span", "2"),
* AttributeModifier.append("style", "background-color: #CC6633")))
* </code>
* </pre>
*
* </p>
*
* @param column
* The column with the styling behaviors
* @return {@code this}, for method chaining
*/
public ColGroup addCol(Col column)
{
colgroupCols.add(column);
return this;
}
/**
* Hides the ColGroup if there are no <col>s to render
*/
@Override
protected void onConfigure()
{
super.onConfigure();
setVisible(colgroupCols.size() > 0);
}
public class Col extends WebMarkupContainer
{
private static final long serialVersionUID = 1L;
public Col(Behavior... behaviors)
{
super(colgroupCols.newChildId());
if (behaviors != null)
{
add(behaviors);
}
}
}
}