wicket-extensions/src/java/wicket/extensions/markup/html/resources/StyleSheetReference.java

/*
 * $Id$
 * $Revision$
 * $Date$
 * 
 * ==============================================================================
 * 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 wicket.extensions.markup.html.resources;

import wicket.ResourceReference;
import wicket.markup.ComponentTag;
import wicket.util.value.ValueMap;

/**
 * Link to a packaged style sheet.
 *
 * @author Eelco Hillenius
 */
public final class StyleSheetReference extends PackagedResourceReference
{
	/**
	 * Construct.
	 * @param id component id
	 * @param referer the class that is refering; is used as the relative
	 * root for gettting the resource
	 * @param file reference as a string
	 */
	public StyleSheetReference(String id, Class referer, String file)
	{
		super(id, referer, file, "href");
	}

	/**
	 * Construct.
	 * @param id component id
	 * @param resourceReference resource reference
	 */
	public StyleSheetReference(String id, ResourceReference resourceReference)
	{
		super(id, resourceReference, "href");
	}

	/**
	 * @see wicket.Component#onComponentTag(wicket.markup.ComponentTag)
	 */
	protected void onComponentTag(ComponentTag tag)
	{
		// Must be attached to a style tag
		checkComponentTag(tag, "link");
		ValueMap attributes = tag.getAttributes();
		attributes.put("rel", "stylesheet");
		attributes.put("type", "text/css");
	}
}