/**
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at the
* <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Initial code contributed and copyrighted by<br>
* frentix GmbH, http://www.frentix.com
* <p>
*/
package org.olat.repository.ui;
import javax.servlet.http.HttpServletRequest;
import org.olat.core.CoreSpringFactory;
import org.olat.core.commons.modules.bc.meta.MetaInfo;
import org.olat.core.commons.modules.bc.meta.tagged.MetaTagged;
import org.olat.core.dispatcher.mapper.Mapper;
import org.olat.core.gui.media.MediaResource;
import org.olat.core.gui.media.NotFoundMediaResource;
import org.olat.core.util.vfs.VFSContainer;
import org.olat.core.util.vfs.VFSItem;
import org.olat.core.util.vfs.VFSLeaf;
import org.olat.core.util.vfs.VFSMediaResource;
import org.olat.repository.manager.CatalogManager;
/**
*
* Initial date: 20.11.2012<br>
* @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
*
*/
public class CatalogEntryImageMapper implements Mapper {
private CatalogManager catalogManager;
public CatalogEntryImageMapper() {
catalogManager = CoreSpringFactory.getImpl(CatalogManager.class);
}
@Override
public MediaResource handle(String relPath, HttpServletRequest request) {
if(relPath.startsWith("/")) {
relPath = relPath.substring(1, relPath.length());
}
VFSContainer categoryResources = catalogManager.getCatalogResourcesHome();
VFSItem image = categoryResources.resolve(relPath);
MediaResource resource = null;
if(image instanceof VFSLeaf) {
if(image instanceof MetaTagged) {
MetaInfo info = ((MetaTagged) image).getMetaInfo();
if(info != null) {
VFSLeaf thumbnail = info.getThumbnail(180, 180, true);
if(thumbnail != null) {
resource = new VFSMediaResource(thumbnail);
}
}
}
if(resource == null) {
resource = new VFSMediaResource((VFSLeaf)image);
}
} else {
resource = new NotFoundMediaResource(relPath);
}
return resource;
}
}