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.platform.ui.web.invalidations; 021 022import java.io.Serializable; 023 024import org.nuxeo.ecm.core.api.DocumentModel; 025 026/** 027 * Base class for Seam beans that use the Automatic invalidation system 028 * 029 * @author tiry 030 */ 031public abstract class DocumentContextBoundActionBean implements Serializable { 032 033 private static final long serialVersionUID = 1L; 034 035 private DocumentModel currentDocument; 036 037 protected DocumentModel getCurrentDocument() { 038 return currentDocument; 039 } 040 041 @DocumentContextInvalidation 042 public void onContextChange(DocumentModel doc) { 043 if (doc == null) { 044 currentDocument = null; 045 resetBeanCache(null); 046 return; 047 } else if (currentDocument == null) { 048 currentDocument = doc; 049 resetBeanCache(doc); 050 return; 051 } 052 if (!doc.getRef().equals(currentDocument.getRef())) { 053 currentDocument = doc; 054 resetBeanCache(doc); 055 } 056 } 057 058 protected abstract void resetBeanCache(DocumentModel newCurrentDocumentModel); 059 060}