    001// Copyright 2008, 2010 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.internal.services;
    016
    017import java.util.Map;
    018
    019import org.apache.tapestry5.dom.Element;
    020import org.apache.tapestry5.services.HiddenFieldLocationRules;
    021import org.apache.tapestry5.services.RelativeElementPosition;
    022
    023public class HiddenFieldLocationRulesImpl implements HiddenFieldLocationRules
    024{
    025    private final Map<String, RelativeElementPosition> configuration;
    026
    027    public HiddenFieldLocationRulesImpl(Map<String, RelativeElementPosition> configuration)
    028    {
    029        this.configuration = configuration;
    030    }
    031
    032    private boolean match(Element element, RelativeElementPosition position)
    033    {
    034        assert element != null;
    035        String key = element.getName();
    036
    037        RelativeElementPosition actual = configuration.get(key);
    038
    039        if (actual == null)
    040            return false;
    041
    042        return actual == position;
    043    }
    044
    045    public boolean placeHiddenFieldInside(Element element)
    046    {
    047        return match(element, RelativeElementPosition.INSIDE);
    048    }
    049
    050    public boolean placeHiddenFieldAfter(Element element)
    051    {
    052        return match(element, RelativeElementPosition.AFTER);
    053    }
    054}