iheadercontributor.java

来自「Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容」· Java 代码 · 共 58 行

/*
 * 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.markup.html;

import org.apache.wicket.IClusterable;

/**
 * An interface to be implemented by components or behaviors that wish to contribute to the header
 * section of the page.
 * 
 * Example:
 * 
 * <pre>
 * class MyPanel extends Panel implements IHeaderContributor
 * {
 * 	public MyPanel(String id)
 * 	{
 * 		super(id);
 * 	}
 * 
 * 	public void renderHead(IHeaderResponse response)
 * 	{
 * 		response.renderOnLoadJavascript(&quot;alert('page loaded!');&quot;);
 * 	}
 * }
 * </pre>
 * 
 * @author Juergen Donnerstag
 * @author Matej Knopp
 */
public interface IHeaderContributor extends IClusterable
{
	/**
	 * Render to the web response whatever the component wants to contribute to the head section.
	 * 
	 * TODO: Post 1.3, add component parameter, so that the behaviors dont' have to track component
	 * instances
	 * 
	 * @param response
	 *            Response object
	 */
	void renderHead(final IHeaderResponse response);
}