001/*
002 * (C) Copyright 2006-2013 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Vladimir Pasquier <vpasquier@nuxeo.com>
018 *     Antoine Taillefer <ataillefer@nuxeo.com>
019 *
020 */
021package org.nuxeo.ecm.platform.thumbnail.factories;
022
023import org.nuxeo.ecm.core.api.Blob;
024import org.nuxeo.ecm.core.api.CoreSession;
025import org.nuxeo.ecm.core.api.DocumentModel;
026import org.nuxeo.ecm.core.api.DocumentRef;
027import org.nuxeo.ecm.core.api.NuxeoException;
028import org.nuxeo.ecm.core.api.thumbnail.ThumbnailAdapter;
029
030/**
031 * Default thumbnail factory for all folderish documents
032 *
033 * @since 5.7
034 */
035public class ThumbnailFolderishFactory extends ThumbnailDocumentFactory {
036
037    @Override
038    public Blob getThumbnail(DocumentModel doc, CoreSession session) {
039        if (!doc.isFolder()) {
040            throw new NuxeoException("Document is not folderish");
041        }
042        DocumentRef docRef = doc.getRef();
043        if (session.hasChildren(docRef)) {
044            DocumentModel child = session.getChildren(docRef).get(0);
045            if (!child.isFolder()) {
046                return session.getChildren(docRef).get(0).getAdapter(ThumbnailAdapter.class).getThumbnail(session);
047            }
048        }
049        return getDefaultThumbnail(doc);
050    }
051
052    @Override
053    public Blob computeThumbnail(DocumentModel doc, CoreSession session) {
054        return null;
055    }
056}