    001    // Copyright 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
    015    package org.apache.tapestry5;
    016
    017    /**
    018     * Meta-data keys that are applied to components and pages.  In addition, in many cases a {@linkplain
    019     * org.apache.tapestry5.SymbolConstants symbol constant key} is also a meta data key (where the symbol value is the
    020     * ultimate default).
    021     *
    022     * @see org.apache.tapestry5.services.MetaDataLocator
    023     * @see org.apache.tapestry5.MetaDataConstants
    024     */
    025    public class MetaDataConstants
    026    {
    027        /**
    028         * Meta data key applied to pages that sets the response content type. A factory default provides the value
    029         * "text/html" when not overridden.
    030         */
    031        public static final String RESPONSE_CONTENT_TYPE = "tapestry.response-content-type";
    032
    033        /**
    034         * Meta data key applied to pages that may only be accessed via secure methods (HTTPS).
    035         */
    036        public static final String SECURE_PAGE = "tapestry.secure-page";
    037
    038        /**
    039         * Meta-data for identifying pages that should only be accessible from clients on the whitelist.
    040         * The meta-default is "false".
    041         *
    042         * @see org.apache.tapestry5.services.security.ClientWhitelist
    043         * @since 5.3
    044         */
    045        public static final String WHITELIST_ONLY_PAGE = "tapestry.white-list-only-page";
    046    }