    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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import org.apache.tapestry5.Block;
    018    import org.apache.tapestry5.internal.structure.Page;
    019    import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
    020    import org.apache.tapestry5.services.BeanBlockContribution;
    021    import org.apache.tapestry5.services.BeanBlockOverrideSource;
    022
    023    import java.util.Collection;
    024    import java.util.Map;
    025
    026    public 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    }