001/*
002 * (C) Copyright 2006-2009 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id$
018 */
019
020package org.nuxeo.ecm.webapp.filemanager;
021
022import org.jboss.seam.ScopeType;
023import org.jboss.seam.annotations.Factory;
024import org.jboss.seam.annotations.In;
025import org.jboss.seam.annotations.Name;
026import org.jboss.seam.annotations.Scope;
027import org.nuxeo.ecm.core.api.DocumentModel;
028import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
029import org.nuxeo.ecm.platform.ui.web.api.NavigationContext;
030
031@Name("blobHolderGenerator")
032@Scope(ScopeType.EVENT)
033public class BlobHolderGenerator {
034
035    @In(create = true, required = false)
036    private NavigationContext navigationContext;
037
038    @Factory(value = "currentDocumentAsBlobHolder", scope = ScopeType.EVENT)
039    public BlobHolder getCurrentBlobHolder() {
040        if (navigationContext == null) {
041            return null;
042        }
043        DocumentModel currentDocument = navigationContext.getCurrentDocument();
044        return getBlobHolder(currentDocument);
045    }
046
047    public BlobHolder getBlobHolder(DocumentModel document) {
048        if (document != null) {
049            return document.getAdapter(BlobHolder.class);
050        } else {
051            return null;
052        }
053    }
054}