Java tutorial
/** * This file is part of mycollab-ui. * * mycollab-ui is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * mycollab-ui is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with mycollab-ui. If not, see <http://www.gnu.org/licenses/>. */ package com.esofthead.mycollab.vaadin.resources.file; import java.io.File; import com.esofthead.mycollab.configuration.FileStorageConfiguration; import com.esofthead.mycollab.configuration.StorageConfiguration; import com.esofthead.mycollab.configuration.StorageManager; import com.esofthead.mycollab.vaadin.resources.VaadinResource; import com.esofthead.mycollab.vaadin.ui.MyCollabResource; import com.vaadin.server.ExternalResource; import com.vaadin.server.FileResource; import com.vaadin.server.Resource; /** * * @author MyCollab Ltd. * @since 4.5.1 * */ public class VaadinFileResource implements VaadinResource { @Override public Resource getStreamResource(String documentPath) { return new FileStreamDownloadResource(documentPath); } @Override public Resource getImagePreviewResource(String documentPath, Resource failOverSource) { StorageConfiguration storageConfiguration = StorageManager.getConfiguration(); File docFile = new File(storageConfiguration.getResourcePath(documentPath)); return (docFile.exists()) ? new FileResource(docFile) : failOverSource; } @Override public Resource getLogoResource(String logoId, int size) { FileStorageConfiguration fileStorageConfiguration = (FileStorageConfiguration) StorageManager .getConfiguration(); File logoFile = fileStorageConfiguration.getLogoFile(logoId, size); return (logoFile != null) ? new FileResource(logoFile) : MyCollabResource.newResource("icons/logo.png"); } @Override public Resource getAvatarResource(String avatarId, int size) { FileStorageConfiguration fileStorageConfiguration = (FileStorageConfiguration) StorageManager .getConfiguration(); File avatarFile = fileStorageConfiguration.getAvatarFile(avatarId, size); return (avatarFile != null) ? new FileResource(avatarFile) : MyCollabResource.newResource("icons/default_user_avatar_" + size + ".png"); } }