    001// Copyright 2010 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.linktransform;
    016
    017import org.apache.tapestry5.http.Link;
    018import org.apache.tapestry5.http.services.Request;
    019import org.apache.tapestry5.ioc.annotations.Primary;
    020import org.apache.tapestry5.services.ComponentEventRequestParameters;
    021import org.apache.tapestry5.services.PageRenderRequestParameters;
    022import org.apache.tapestry5.services.linktransform.ComponentEventLinkTransformer;
    023import org.apache.tapestry5.services.linktransform.LinkTransformer;
    024import org.apache.tapestry5.services.linktransform.PageRenderLinkTransformer;
    025
    026public class LinkTransformerImpl implements LinkTransformer
    027{
    028    private final ComponentEventLinkTransformer componentEventLinkTransformer;
    029
    030    private final PageRenderLinkTransformer pageRenderLinkTransformer;
    031
    032    public LinkTransformerImpl(@Primary
    033    ComponentEventLinkTransformer componentEventLinkTransformer, @Primary
    034    PageRenderLinkTransformer pageRenderLinkTransformer)
    035    {
    036        this.componentEventLinkTransformer = componentEventLinkTransformer;
    037        this.pageRenderLinkTransformer = pageRenderLinkTransformer;
    038    }
    039
    040    public Link transformComponentEventLink(Link defaultLink, ComponentEventRequestParameters parameters)
    041    {
    042        return or(componentEventLinkTransformer.transformComponentEventLink(defaultLink, parameters), defaultLink);
    043    }
    044
    045    public Link transformPageRenderLink(Link defaultLink, PageRenderRequestParameters parameters)
    046    {
    047        return or(pageRenderLinkTransformer.transformPageRenderLink(defaultLink, parameters), defaultLink);
    048    }
    049
    050    public ComponentEventRequestParameters decodeComponentEventRequest(Request request)
    051    {
    052        return componentEventLinkTransformer.decodeComponentEventRequest(request);
    053    }
    054
    055    public PageRenderRequestParameters decodePageRenderRequest(Request request)
    056    {
    057        return pageRenderLinkTransformer.decodePageRenderRequest(request);
    058    }
    059
    060    private Link or(Link left, Link right)
    061    {
    062        return left != null ? left : right;
    063    }
    064
    065}