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.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}