    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.internal.services;
    016
    017import org.apache.tapestry5.Block;
    018import org.apache.tapestry5.internal.structure.Page;
    019import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
    020import org.apache.tapestry5.services.BeanBlockContribution;
    021import org.apache.tapestry5.services.BeanBlockOverrideSource;
    022
    023import java.util.Collection;
    024import java.util.Map;
    025
    026public class BeanBlockOverrideSourceImpl implements BeanBlockOverrideSource
    027{
    028    private final RequestPageCache pageCache;
    029
    030    private final Map<String, BeanBlockContribution> display = CollectionFactory.newCaseInsensitiveMap();
    031
    032    private final Map<String, BeanBlockContribution> edit = CollectionFactory.newCaseInsensitiveMap();
    033
    034    public BeanBlockOverrideSourceImpl(RequestPageCache pageCache,
    035                                       Collection<BeanBlockContribution> configuration)
    036    {
    037        this.pageCache = pageCache;
    038
    039        for (BeanBlockContribution contribution : configuration)
    040        {
    041            Map<String, BeanBlockContribution> map = contribution.isEdit() ? edit : display;
    042
    043            map.put(contribution.getDataType(), contribution);
    044        }
    045    }
    046
    047    public boolean hasDisplayBlock(String datatype)
    048    {
    049        return display.containsKey(datatype);
    050    }
    051
    052    public Block getDisplayBlock(String datatype)
    053    {
    054        return toBlock(display.get(datatype));
    055    }
    056
    057    private Block toBlock(BeanBlockContribution contribution)
    058    {
    059        if (contribution == null) return null;
    060
    061        Page page = pageCache.get(contribution.getPageName());
    062
    063        return page.getRootElement().getBlock(contribution.getBlockId());
    064    }
    065
    066    public Block getEditBlock(String datatype)
    067    {
    068        return toBlock(edit.get(datatype));
    069    }
    070
    071}