    001// Copyright 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.services.pageload;
    016
    017import org.apache.tapestry5.ioc.services.ThreadLocale;
    018
    019/**
    020 * Determines the {@link ComponentResourceSelector} for the current request. This is often based on cookies, query
    021 * parameters, or other details available in the {@link org.apache.tapestry5.services.Request}. The default implementation simply wraps the
    022 * {@linkplain ThreadLocale current locale} as a ComponentResourceSelector. A custom implementation may
    023 * {@linkplain ComponentResourceSelector#withAxis(Class, Object) add additional axes} to the selector.
    024 *
    025 * @since 5.3
    026 */
    027public interface ComponentRequestSelectorAnalyzer
    028{
    029    /**
    030     * Constructs a selector for locating or loading pages in the current request.
    031     */
    032    ComponentResourceSelector buildSelectorForRequest();
    033}