    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.services;
    016
    017import java.io.IOException;
    018
    019import org.apache.tapestry5.http.services.RequestGlobals;
    020
    021/**
    022 * Filter contributed into the {@link ComponentRequestHandler} pipeline to set the
    023 * {@link RequestGlobals#getActivePageName() activePageName property}.
    024 *
    025 * @since 5.2.0
    026 */
    027public class InitializeActivePageName implements ComponentRequestFilter
    028{
    029    private final RequestGlobals globals;
    030
    031    public InitializeActivePageName(RequestGlobals globals)
    032    {
    033        this.globals = globals;
    034    }
    035
    036    public void handleComponentEvent(ComponentEventRequestParameters parameters,
    037            ComponentRequestHandler handler) throws IOException
    038    {
    039        globals.storeActivePageName(parameters.getActivePageName());
    040
    041        handler.handleComponentEvent(parameters);
    042    }
    043
    044    public void handlePageRender(PageRenderRequestParameters parameters,
    045            ComponentRequestHandler handler) throws IOException
    046    {
    047        globals.storeActivePageName(parameters.getLogicalPageName());
    048
    049        handler.handlePageRender(parameters);
    050    }
    051
    052}