001/* 002 * (C) Copyright 2006-2008 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.picture.core.libraryselector; 023 024import org.apache.commons.logging.Log; 025import org.apache.commons.logging.LogFactory; 026import org.nuxeo.ecm.platform.picture.core.ImageUtils; 027import org.nuxeo.ecm.platform.picture.core.MetadataUtils; 028import org.nuxeo.runtime.model.ComponentContext; 029import org.nuxeo.runtime.model.ComponentInstance; 030import org.nuxeo.runtime.model.DefaultComponent; 031 032public class LibrarySelectorService extends DefaultComponent implements LibrarySelector { 033 034 public static final String LIBRARY_SELECTOR = "LibrarySelector"; 035 036 private static final Log log = LogFactory.getLog(LibrarySelectorService.class); 037 038 protected ImageUtils imageUtils; 039 040 protected MetadataUtils metadataUtils; 041 042 @Override 043 public void deactivate(ComponentContext context) { 044 imageUtils = null; 045 metadataUtils = null; 046 } 047 048 @Override 049 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 050 051 if (extensionPoint.equals(LIBRARY_SELECTOR)) { 052 LibrarySelectorServiceDescriptor libraryDescriptor = (LibrarySelectorServiceDescriptor) contribution; 053 registerLibrarySelector(libraryDescriptor); 054 } else { 055 log.error("Extension point " + extensionPoint + "is unknown"); 056 } 057 } 058 059 public void registerLibrarySelector(LibrarySelectorServiceDescriptor libraryDescriptor) { 060 registerImageUtils(libraryDescriptor.getImageUtils()); 061 registerMetadataUtils(libraryDescriptor.getMetadataUtils()); 062 } 063 064 protected void registerImageUtils(ImageUtilsDescriptor imageUtilsDescriptor) { 065 if (imageUtilsDescriptor == null) { 066 return; 067 } 068 imageUtils = imageUtilsDescriptor.getNewInstance(); 069 log.debug("Using " + imageUtils.getClass().getName() + " for ImageUtils."); 070 } 071 072 protected void registerMetadataUtils(MetadataUtilsDescriptor metadataUtilsDescriptor) { 073 if (metadataUtilsDescriptor == null) { 074 return; 075 } 076 metadataUtils = metadataUtilsDescriptor.getNewInstance(); 077 log.debug("Using " + metadataUtils.getClass().getName() + " for MetadataUtils."); 078 } 079 080 @Override 081 public ImageUtils getImageUtils() { 082 return imageUtils; 083 } 084 085 @Override 086 public MetadataUtils getMetadataUtils() { 087 return metadataUtils; 088 } 089 090}