    001// Copyright 2007, 2008, 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.ioc.annotations.Primary;
    018import org.apache.tapestry5.services.ComponentClassResolver;
    019import org.apache.tapestry5.services.ComponentEventResultProcessor;
    020import org.apache.tapestry5.services.Traditional;
    021
    022import java.io.IOException;
    023
    024/**
    025 * Used when a component event handler returns a class value. The value is interpreted as the page class. A redirect
    026 * to the page will be sent.
    027 */
    028public class ClassResultProcessor implements ComponentEventResultProcessor<Class>
    029{
    030    private final ComponentClassResolver resolver;
    031
    032    private final ComponentEventResultProcessor primary;
    033
    034    public ClassResultProcessor(ComponentClassResolver resolver,
    035
    036                                @Traditional @Primary
    037                                ComponentEventResultProcessor primary)
    038    {
    039        this.resolver = resolver;
    040        this.primary = primary;
    041    }
    042
    043    public void processResultValue(Class value) throws IOException
    044    {
    045        String className = value.getName();
    046
    047        String pageName = resolver.resolvePageClassNameToPageName(className);
    048
    049        primary.processResultValue(pageName);
    050    }
    051
    052}