    001//  Copyright 2008 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 org.apache.tapestry5.dom.Element;
    018import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration;
    019
    020/**
    021 * Provides some assistance in determining <em>where</em> to place a hidden field based on standard (X)HTML elements.
    022 * <p/>
    023 * The service works based on a mapped service contribution; keys are the element names, values area {@link
    024 * org.apache.tapestry5.services.RelativeElementPosition}.
    025 */
    026@UsesMappedConfiguration(RelativeElementPosition.class)
    027public interface HiddenFieldLocationRules
    028{
    029    /**
    030     * Checks the element to see if a hidden field may be placed inside the element.
    031     */
    032    boolean placeHiddenFieldInside(Element element);
    033
    034    /**
    035     * Checks the element to see if a hidden field may be placed after the element (as a sibling element).
    036     */
    037    boolean placeHiddenFieldAfter(Element element);
    038}