001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.core.request.handler;
018
019import org.apache.wicket.Component;
020import org.apache.wicket.request.IRequestCycle;
021import org.apache.wicket.request.component.IRequestableComponent;
022import org.apache.wicket.request.http.WebResponse;
023
024/**
025 * Request handler that renders a component
026 * 
027 * @author igor.vaynberg
028 */
029public class ComponentRenderingRequestHandler implements IComponentRequestHandler
030{
031        private final Component component;
032
033        /**
034         * Construct.
035         * 
036         * @param component
037         *            the component to render
038         */
039        public ComponentRenderingRequestHandler(Component component)
040        {
041                this.component = component;
042        }
043
044        @Override
045        public IRequestableComponent getComponent()
046        {
047                return component;
048        }
049
050        @Override
051        public void detach(IRequestCycle requestCycle)
052        {
053                component.getPage().detach();
054        }
055
056        @Override
057        public void respond(IRequestCycle requestCycle)
058        {
059                // preventing the response to component from being cached
060                if (requestCycle.getResponse() instanceof WebResponse)
061                {
062                        WebResponse response = (WebResponse)requestCycle.getResponse();
063                        response.disableCaching();
064                }
065
066                component.beforeRender();
067                component.renderPart();
068        }
069
070        @Override
071        public final String getComponentPath()
072        {
073                return component.getPageRelativePath();
074        }
075
076}