    001// Copyright 2006, 2007, 2008, 2009, 2011 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.internal.services;
    016
    017import org.apache.tapestry5.ComponentResources;
    018import org.apache.tapestry5.ioc.annotations.Marker;
    019import org.apache.tapestry5.ioc.annotations.Primary;
    020import org.apache.tapestry5.runtime.Component;
    021import org.apache.tapestry5.services.ComponentEventResultProcessor;
    022import org.apache.tapestry5.services.Traditional;
    023import org.slf4j.Logger;
    024
    025import java.io.IOException;
    026
    027@Marker({Traditional.class, ComponentInstanceProcessor.class})
    028public class ComponentInstanceResultProcessor implements ComponentEventResultProcessor<Component>
    029{
    030    private final Logger logger;
    031
    032    private final ComponentEventResultProcessor resultProcessor;
    033
    034    public ComponentInstanceResultProcessor(Logger logger,
    035                                            @Traditional @Primary ComponentEventResultProcessor resultProcessor)
    036    {
    037        this.logger = logger;
    038        this.resultProcessor = resultProcessor;
    039    }
    040
    041    public void processResultValue(Component value) throws IOException
    042    {
    043        ComponentResources resources = value.getComponentResources();
    044
    045        if (resources.getContainer() != null)
    046        {
    047            logger.warn("Component {} was returned from an event handler method, but is not a page component. The page containing the component will render the client response.", value.getComponentResources().getCompleteId());
    048        }
    049
    050        resultProcessor.processResultValue(resources.getPageName());
    051    }
    052}