/*
 * 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.sling.junit;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Collection;

import javax.servlet.http.HttpServletResponse;

import org.junit.runner.notification.RunListener;

/** Renderer for our servlet output. Should not be used directly for
 *  rendering as it leads to non-reentrant renderers. Use only via
 *  {@link RendererFactory} as {@link RendererSelectorImpl} does 
 */
 public interface Renderer {
    /** True if this renderer applies to supplied request */
     boolean appliesTo(TestSelector selector);
     
    /** Called first to setup rendering */
    void setup(HttpServletResponse response, String pageTitle) throws IOException, UnsupportedEncodingException;
    
    /** Called once rendering is done */
    void cleanup();
    
    /** Render a list of things 
     * @param describes the role of the list, must be a valid CSS class value
     */
    void list(String role, Collection<String> data);
    
    /** Render general information 
     * @param describes the role of the list, must be a valid CSS class value
     */
    void info(String role, String info);
    
    /** Render a title of a specified hierarchical level */
    void title(int level, String title);
    
    /** Render a link to specified URL using specified HTTP method */
    void link(String info, String url, String method);
    
    /** Provide a RunListener for JUnit tests */
    RunListener getRunListener();
    
    /** Return the extension that triggers this renderer */
    String getExtension();
}