    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
    015    package org.apache.tapestry5.services.pageload;
    016
    017    import 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     */
    027    public interface ComponentRequestSelectorAnalyzer
    028    {
    029        /**
    030         * Constructs a selector for locating or loading pages in the current request.
    031         */
    032        ComponentResourceSelector buildSelectorForRequest();
    033    }