    001// Copyright 2006, 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.http.Link;
    018import org.apache.tapestry5.ioc.annotations.Primary;
    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 string value. The value is interpreted as the logical name of a page. A
    026 * link to the page will be sent as a redirect.
    027 */
    028public class PageNameComponentEventResultProcessor implements ComponentEventResultProcessor<String>
    029{
    030    private final LinkSource linkSource;
    031
    032    private final ComponentEventResultProcessor primary;
    033
    034    public PageNameComponentEventResultProcessor(LinkSource linkSource,
    035                                                 @Traditional @Primary
    036                                                 ComponentEventResultProcessor primary)
    037    {
    038        this.linkSource = linkSource;
    039        this.primary = primary;
    040    }
    041
    042    public void processResultValue(String value) throws IOException
    043    {
    044        Link link = linkSource.createPageRenderLink(value, false);
    045
    046        primary.processResultValue(link);
    047    }
    048}