    001// Copyright 2010-2013 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.http;
    016
    017/**
    018 * Identifies how a {@link Link} should handle security.
    019 *
    020 * @since 5.2.2
    021 */
    022public enum LinkSecurity
    023{
    024    /** The request was insecure, but the targeted page was secure, so the URI should be absolute and secure. */
    025    FORCE_SECURE,
    026
    027    /** The request was was secure but the targeted page is not, so the URI should be absolute and insecure. */
    028    FORCE_INSECURE,
    029
    030    /**
    031     * The request is insecure, which matches the targeted page security, so there's no explicit need for an absolute
    032     * URI.
    033     */
    034    INSECURE,
    035
    036    /**
    037     * The request is secure, which matches the targeted page security, so there's no explicit need for an absolute
    038     * URI.
    039     */
    040    SECURE;
    041
    042    /** Promotes to either {@link #FORCE_SECURE} or {@link #FORCE_INSECURE}. */
    043    public LinkSecurity promote()
    044    {
    045        switch (this)
    046        {
    047            case SECURE:
    048            case FORCE_SECURE:
    049                return FORCE_SECURE;
    050
    051            default:
    052                return FORCE_INSECURE;
    053        }
    054    }
    055
    056    /** Does this value indicate forcing an absolute URI (one that includes scheme and hostname)? */
    057    public boolean isAbsolute()
    058    {
    059        return this == FORCE_SECURE || this == FORCE_INSECURE;
    060    }
    061}