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 org.madsonic.controller; import org.madsonic.domain.Transcoding; import org.madsonic.domain.User; import org.madsonic.domain.UserSettings; import org.madsonic.service.SecurityService; import org.madsonic.service.TranscodingService; import org.madsonic.service.SettingsService; 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.HashMap; import java.util.Map; /** * Controller for the page used to administrate the set of transcoding configurations. * * @author Sindre Mehus */ public class TranscodingSettingsController extends ParameterizableViewController { private TranscodingService transcodingService; private SettingsService settingsService; private SecurityService securityService; @Override protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception { Map<String, Object> map = new HashMap<String, Object>(); if (isFormSubmission(request)) { handleParameters(request, map); map.put("toast", true); } ModelAndView result = super.handleRequestInternal(request, response); map.put("transcodings", transcodingService.getAllTranscodings()); map.put("transcodeDirectory", transcodingService.getTranscodeDirectory()); map.put("downsampleCommand", settingsService.getDownsamplingCommand()); map.put("hlsCommand", settingsService.getHlsCommand()); map.put("brand", settingsService.getBrand()); User user = securityService.getCurrentUser(request); UserSettings userSettings = settingsService.getUserSettings(user.getUsername()); map.put("customScrollbar", userSettings.isCustomScrollbarEnabled()); 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 void handleParameters(HttpServletRequest request, Map<String, Object> map) { for (Transcoding transcoding : transcodingService.getAllTranscodings()) { Integer id = transcoding.getId(); String name = getParameter(request, "name", id); String sourceFormats = getParameter(request, "sourceFormats", id); String targetFormat = getParameter(request, "targetFormat", id); String step1 = getParameter(request, "step1", id); String step2 = getParameter(request, "step2", id); String step3 = getParameter(request, "step3", id); boolean delete = getParameter(request, "delete", id) != null; if (delete) { transcodingService.deleteTranscoding(id); } else if (name == null) { map.put("error", "transcodingsettings.noname"); } else if (sourceFormats == null) { map.put("error", "transcodingsettings.nosourceformat"); } else if (targetFormat == null) { map.put("error", "transcodingsettings.notargetformat"); } else if (step1 == null) { map.put("error", "transcodingsettings.nostep1"); } else { transcoding.setName(name); transcoding.setSourceFormats(sourceFormats); transcoding.setTargetFormat(targetFormat); transcoding.setStep1(step1); transcoding.setStep2(step2); transcoding.setStep3(step3); transcodingService.updateTranscoding(transcoding); } } String name = StringUtils.trimToNull(request.getParameter("name")); String sourceFormats = StringUtils.trimToNull(request.getParameter("sourceFormats")); String targetFormat = StringUtils.trimToNull(request.getParameter("targetFormat")); String step1 = StringUtils.trimToNull(request.getParameter("step1")); String step2 = StringUtils.trimToNull(request.getParameter("step2")); String step3 = StringUtils.trimToNull(request.getParameter("step3")); boolean defaultActive = request.getParameter("defaultActive") != null; if (name != null || sourceFormats != null || targetFormat != null || step1 != null || step2 != null || step3 != null) { Transcoding transcoding = new Transcoding(null, name, sourceFormats, targetFormat, step1, step2, step3, defaultActive); if (name == null) { map.put("error", "transcodingsettings.noname"); } else if (sourceFormats == null) { map.put("error", "transcodingsettings.nosourceformat"); } else if (targetFormat == null) { map.put("error", "transcodingsettings.notargetformat"); } else if (step1 == null) { map.put("error", "transcodingsettings.nostep1"); } else { transcodingService.createTranscoding(transcoding); } if (map.containsKey("error")) { map.put("newTranscoding", transcoding); } } settingsService.setDownsamplingCommand(StringUtils.trim(request.getParameter("downsampleCommand"))); settingsService.setHlsCommand(StringUtils.trim(request.getParameter("hlsCommand"))); settingsService.save(); } private String getParameter(HttpServletRequest request, String name, Integer id) { return StringUtils.trimToNull(request.getParameter(name + "[" + id + "]")); } public void setTranscodingService(TranscodingService transcodingService) { this.transcodingService = transcodingService; } public void setSettingsService(SettingsService settingsService) { this.settingsService = settingsService; } public void setSecurityService(SecurityService securityService) { this.securityService = securityService; } }