1 /** 2 * This file Copyright (c) 2015-2018 Magnolia International 3 * Ltd. (http://www.magnolia-cms.com). All rights reserved. 4 * 5 * 6 * This file is dual-licensed under both the Magnolia 7 * Network Agreement and the GNU General Public License. 8 * You may elect to use one or the other of these licenses. 9 * 10 * This file is distributed in the hope that it will be 11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the 12 * implied warranty of MERCHANTABILITY or FITNESS FOR A 13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. 14 * Redistribution, except as permitted by whichever of the GPL 15 * or MNA you select, is prohibited. 16 * 17 * 1. For the GPL license (GPL), you can redistribute and/or 18 * modify this file under the terms of the GNU General 19 * Public License, Version 3, as published by the Free Software 20 * Foundation. You should have received a copy of the GNU 21 * General Public License, Version 3 along with this program; 22 * if not, write to the Free Software Foundation, Inc., 51 23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 24 * 25 * 2. For the Magnolia Network Agreement (MNA), this file 26 * and the accompanying materials are made available under the 27 * terms of the MNA which accompanies this distribution, and 28 * is available at http://www.magnolia-cms.com/mna.html 29 * 30 * Any modifications to this file must keep this entire header 31 * intact. 32 * 33 */ 34 package info.magnolia.resources.app.imageprovider; 35 36 import info.magnolia.context.WebContext; 37 import info.magnolia.resourceloader.Resource; 38 import info.magnolia.resources.app.data.ResourceHelper; 39 import info.magnolia.ui.contentapp.browser.preview.PreviewProvider; 40 41 import java.util.Optional; 42 43 import javax.inject.Inject; 44 import javax.inject.Provider; 45 46 import com.vaadin.server.ExternalResource; 47 48 /** 49 * An {@link info.magnolia.ui.contentapp.browser.preview.PreviewProvider} implementation for handling resource files images. 50 */ 51 public class ResourcesImageProvider implements PreviewProvider<Resource>, ResourceHelper { 52 53 private final String contextPath; 54 55 @Inject 56 public ResourcesImageProvider(Provider<WebContext> contextProvider) { 57 this.contextPath = contextProvider.get().getContextPath(); 58 } 59 60 @Override 61 public Optional<com.vaadin.server.Resource> getResource(Resource item) { 62 String link = contextPath + "/.resources" + item.getPath(); 63 String mimeType = TIKA.detect(item.getPath()); 64 ExternalResource resource = null; 65 if (mimeType.matches("image.*")) { 66 resource = new ExternalResource(link, mimeType); 67 } 68 return Optional.ofNullable(resource); 69 } 70 }