001/* 002 * (C) Copyright 2006-2008 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.picture.core.libraryselector; 021 022import org.apache.commons.logging.Log; 023import org.apache.commons.logging.LogFactory; 024import org.nuxeo.ecm.platform.picture.core.ImageUtils; 025import org.nuxeo.ecm.platform.picture.core.MetadataUtils; 026import org.nuxeo.runtime.model.ComponentContext; 027import org.nuxeo.runtime.model.ComponentInstance; 028import org.nuxeo.runtime.model.DefaultComponent; 029 030public class LibrarySelectorService extends DefaultComponent implements LibrarySelector { 031 032 public static final String LIBRARY_SELECTOR = "LibrarySelector"; 033 034 private static final Log log = LogFactory.getLog(LibrarySelectorService.class); 035 036 protected ImageUtils imageUtils; 037 038 protected MetadataUtils metadataUtils; 039 040 @Override 041 public void deactivate(ComponentContext context) { 042 imageUtils = null; 043 metadataUtils = null; 044 } 045 046 @Override 047 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 048 049 if (extensionPoint.equals(LIBRARY_SELECTOR)) { 050 LibrarySelectorServiceDescriptor libraryDescriptor = (LibrarySelectorServiceDescriptor) contribution; 051 registerLibrarySelector(libraryDescriptor); 052 } else { 053 log.error("Extension point " + extensionPoint + "is unknown"); 054 } 055 } 056 057 public void registerLibrarySelector(LibrarySelectorServiceDescriptor libraryDescriptor) { 058 registerImageUtils(libraryDescriptor.getImageUtils()); 059 registerMetadataUtils(libraryDescriptor.getMetadataUtils()); 060 } 061 062 protected void registerImageUtils(ImageUtilsDescriptor imageUtilsDescriptor) { 063 if (imageUtilsDescriptor == null) { 064 return; 065 } 066 imageUtils = imageUtilsDescriptor.getNewInstance(); 067 log.debug("Using " + imageUtils.getClass().getName() + " for ImageUtils."); 068 } 069 070 protected void registerMetadataUtils(MetadataUtilsDescriptor metadataUtilsDescriptor) { 071 if (metadataUtilsDescriptor == null) { 072 return; 073 } 074 metadataUtils = metadataUtilsDescriptor.getNewInstance(); 075 log.debug("Using " + metadataUtils.getClass().getName() + " for MetadataUtils."); 076 } 077 078 @Override 079 public ImageUtils getImageUtils() { 080 return imageUtils; 081 } 082 083 @Override 084 public MetadataUtils getMetadataUtils() { 085 return metadataUtils; 086 } 087 088}