Java tutorial
/* This file is part of Subsonic. Subsonic 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. Subsonic 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 Subsonic. If not, see <http://www.gnu.org/licenses/>. Copyright 2009 (C) Sindre Mehus */ package net.sourceforge.subsonic.controller; import net.sourceforge.subsonic.domain.MediaFile; import net.sourceforge.subsonic.domain.Share; import net.sourceforge.subsonic.domain.User; import net.sourceforge.subsonic.service.MediaFileService; import net.sourceforge.subsonic.service.SecurityService; import net.sourceforge.subsonic.service.ShareService; import org.apache.commons.lang.StringUtils; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.ParameterizableViewController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; /** * Controller for the page used to administrate the set of shared media. * * @author Sindre Mehus */ public class ShareSettingsController extends ParameterizableViewController { private ShareService shareService; private SecurityService securityService; private MediaFileService mediaFileService; @Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { Map<String, Object> map = new HashMap<String, Object>(); if (isFormSubmission(request)) { String error = handleParameters(request); map.put("error", error); } ModelAndView result = super.handleRequestInternal(request, response); map.put("shareBaseUrl", shareService.getShareBaseUrl()); map.put("shareInfos", getShareInfos(request)); map.put("user", securityService.getCurrentUser(request)); result.addObject("model", map); return result; } /** * Determine if the given request represents a form submission. * * @param request current HTTP request * @return if the request represents a form submission */ private boolean isFormSubmission(HttpServletRequest request) { return "POST".equals(request.getMethod()); } private String handleParameters(HttpServletRequest request) { User user = securityService.getCurrentUser(request); for (Share share : shareService.getSharesForUser(user)) { int id = share.getId(); String description = getParameter(request, "description", id); boolean delete = getParameter(request, "delete", id) != null; String expireIn = getParameter(request, "expireIn", id); if (delete) { shareService.deleteShare(id); } else { if (expireIn != null) { share.setExpires(parseExpireIn(expireIn)); } share.setDescription(description); shareService.updateShare(share); } } return null; } private List<ShareInfo> getShareInfos(HttpServletRequest request) { List<ShareInfo> result = new ArrayList<ShareInfo>(); User user = securityService.getCurrentUser(request); for (Share share : shareService.getSharesForUser(user)) { List<MediaFile> files = shareService.getSharedFiles(share.getId()); if (!files.isEmpty()) { MediaFile file = files.get(0); result.add(new ShareInfo(share, file.isDirectory() ? file : mediaFileService.getParentOf(file))); } } return result; } private String getParameter(HttpServletRequest request, String name, int id) { return StringUtils.trimToNull(request.getParameter(name + "[" + id + "]")); } private Date parseExpireIn(String expireIn) { int days = Integer.parseInt(expireIn); if (days == 0) { return null; } Calendar calendar = Calendar.getInstance(); calendar.add(Calendar.DAY_OF_YEAR, days); return calendar.getTime(); } public void setSecurityService(SecurityService securityService) { this.securityService = securityService; } public void setShareService(ShareService shareService) { this.shareService = shareService; } public void setMediaFileService(MediaFileService mediaFileService) { this.mediaFileService = mediaFileService; } public static class ShareInfo { private final Share share; private final MediaFile dir; public ShareInfo(Share share, MediaFile dir) { this.share = share; this.dir = dir; } public Share getShare() { return share; } public MediaFile getDir() { return dir; } } }