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}