001/* 002 * (C) Copyright 2006-2009 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 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.platform.ui.web.invalidations; 023 024import java.io.Serializable; 025 026import org.nuxeo.ecm.core.api.DocumentModel; 027 028/** 029 * Base class for Seam beans that use the Automatic invalidation system 030 * 031 * @author tiry 032 */ 033public abstract class DocumentContextBoundActionBean implements Serializable { 034 035 private static final long serialVersionUID = 1L; 036 037 private DocumentModel currentDocument; 038 039 protected DocumentModel getCurrentDocument() { 040 return currentDocument; 041 } 042 043 @DocumentContextInvalidation 044 public void onContextChange(DocumentModel doc) { 045 if (doc == null) { 046 currentDocument = null; 047 resetBeanCache(null); 048 return; 049 } else if (currentDocument == null) { 050 currentDocument = doc; 051 resetBeanCache(doc); 052 return; 053 } 054 if (!doc.getRef().equals(currentDocument.getRef())) { 055 currentDocument = doc; 056 resetBeanCache(doc); 057 } 058 } 059 060 protected abstract void resetBeanCache(DocumentModel newCurrentDocumentModel); 061 062}