001/*
002 * (C) Copyright 2015 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 *     Thomas Roger
018 */
019
020package org.nuxeo.ecm.platform.thumbnail.rendition;
021
022import java.util.Collections;
023import java.util.List;
024
025import org.nuxeo.ecm.core.api.Blob;
026import org.nuxeo.ecm.core.api.DocumentModel;
027import org.nuxeo.ecm.core.api.thumbnail.ThumbnailService;
028import org.nuxeo.ecm.platform.rendition.extension.RenditionProvider;
029import org.nuxeo.ecm.platform.rendition.service.RenditionDefinition;
030import org.nuxeo.runtime.api.Framework;
031
032/**
033 * @since 7.2
034 */
035public class ThumbnailRenditionProvider implements RenditionProvider {
036
037    @Override
038    public boolean isAvailable(DocumentModel doc, RenditionDefinition definition) {
039        return true;
040    }
041
042    @Override
043    public List<Blob> render(DocumentModel doc, RenditionDefinition definition) {
044        ThumbnailService thumbnailService = Framework.getService(ThumbnailService.class);
045        Blob blob = thumbnailService.getThumbnail(doc, doc.getCoreSession());
046        if (blob != null) {
047            return Collections.singletonList(blob);
048        }
049
050        return Collections.emptyList();
051    }
052}