Java tutorial
/* * Copyright (c) 2009, 2010, 2011, 2012, B3log Team * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.b3log.solo.processor.console; import java.util.Calendar; import java.util.Locale; import java.util.Map; import java.util.TimeZone; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.http.HttpServletRequest; import org.apache.commons.lang.StringUtils; import org.b3log.latke.Keys; import org.b3log.latke.Latkes; import org.b3log.latke.event.Event; import org.b3log.latke.event.EventException; import org.b3log.latke.event.EventManager; import org.b3log.latke.model.Plugin; import org.b3log.latke.model.User; import org.b3log.latke.plugin.ViewLoadEventData; import org.b3log.latke.service.LangPropsService; import org.b3log.latke.service.ServiceException; import org.b3log.latke.servlet.HTTPRequestContext; import org.b3log.latke.servlet.HTTPRequestMethod; import org.b3log.latke.servlet.annotation.RequestProcessing; import org.b3log.latke.servlet.annotation.RequestProcessor; import org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer; import org.b3log.latke.util.Strings; import org.b3log.solo.SoloServletListener; import org.b3log.solo.model.Common; import org.b3log.solo.model.Preference; import org.b3log.solo.model.Skin; import org.b3log.solo.processor.renderer.ConsoleRenderer; import org.b3log.solo.processor.util.Filler; import org.b3log.solo.service.PreferenceQueryService; import org.b3log.solo.util.Users; import org.json.JSONObject; /** * Admin console render processing. * * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a> * @version 1.0.0.6, Sep 6, 2012 * @since 0.4.1 */ @RequestProcessor public final class AdminConsole { /** * Logger. */ private static final Logger LOGGER = Logger.getLogger(AdminConsole.class.getName()); /** * Language service. */ private LangPropsService langPropsService = LangPropsService.getInstance(); /** * Preference query service. */ private PreferenceQueryService preferenceQueryService = PreferenceQueryService.getInstance(); /** * User utilities. */ private Users userUtils = Users.getInstance(); /** * Filler. */ private Filler filler = Filler.getInstance(); /** * Event manager. */ private EventManager eventManager = EventManager.getInstance(); /** * Shows administrator index with the specified context. * * @param request the specified request * @param context the specified context */ @RequestProcessing(value = "/admin-index.do", method = HTTPRequestMethod.GET) public void showAdminIndex(final HttpServletRequest request, final HTTPRequestContext context) { final AbstractFreeMarkerRenderer renderer = new ConsoleRenderer(); context.setRenderer(renderer); final String templateName = "admin-index.ftl"; renderer.setTemplateName(templateName); final Map<String, String> langs = langPropsService.getAll(Latkes.getLocale()); final Map<String, Object> dataModel = renderer.getDataModel(); dataModel.putAll(langs); final JSONObject currentUser = userUtils.getCurrentUser(request); final String userName = currentUser.optString(User.USER_NAME); final String roleName = currentUser.optString(User.USER_ROLE); dataModel.put(User.USER_NAME, userName); dataModel.put(User.USER_ROLE, roleName); try { final JSONObject preference = preferenceQueryService.getPreference(); dataModel.put(Preference.LOCALE_STRING, preference.getString(Preference.LOCALE_STRING)); dataModel.put(Preference.BLOG_TITLE, preference.getString(Preference.BLOG_TITLE)); dataModel.put(Preference.BLOG_SUBTITLE, preference.getString(Preference.BLOG_SUBTITLE)); dataModel.put(Common.VERSION, SoloServletListener.VERSION); dataModel.put(Common.STATIC_RESOURCE_VERSION, Latkes.getStaticResourceVersion()); dataModel.put(Common.YEAR, String.valueOf(Calendar.getInstance().get(Calendar.YEAR))); dataModel.put(Preference.ARTICLE_LIST_DISPLAY_COUNT, preference.getInt(Preference.ARTICLE_LIST_DISPLAY_COUNT)); dataModel.put(Preference.ARTICLE_LIST_PAGINATION_WINDOW_SIZE, preference.getInt(Preference.ARTICLE_LIST_PAGINATION_WINDOW_SIZE)); dataModel.put(Preference.LOCALE_STRING, preference.getString(Preference.LOCALE_STRING)); dataModel.put(Preference.EDITOR_TYPE, preference.getString(Preference.EDITOR_TYPE)); dataModel.put(Skin.SKIN_DIR_NAME, preference.getString(Skin.SKIN_DIR_NAME)); Keys.fillServer(dataModel); Keys.fillRuntime(dataModel); filler.fillMinified(dataModel); } catch (final Exception e) { LOGGER.log(Level.SEVERE, "Admin index render failed", e); } fireFreeMarkerActionEvent(templateName, dataModel); } /** * Shows administrator functions with the specified context. * * @param request the specified request * @param context the specified context */ @RequestProcessing(value = { "/admin-article.do", "/admin-article-list.do", "/admin-comment-list.do", "/admin-link-list.do", "/admin-page-list.do", "/admin-others.do", "/admin-draft-list.do", "/admin-user-list.do", "/admin-plugin-list.do", "/admin-main.do", "/admin-about.do" }, method = HTTPRequestMethod.GET) public void showAdminFunctions(final HttpServletRequest request, final HTTPRequestContext context) { final AbstractFreeMarkerRenderer renderer = new ConsoleRenderer(); context.setRenderer(renderer); final String requestURI = request.getRequestURI(); final String templateName = StringUtils.substringBetween(requestURI, Latkes.getContextPath() + '/', ".") + ".ftl"; LOGGER.log(Level.FINEST, "Admin function[templateName={0}]", templateName); renderer.setTemplateName(templateName); final Locale locale = Latkes.getLocale(); final Map<String, String> langs = langPropsService.getAll(locale); final Map<String, Object> dataModel = renderer.getDataModel(); dataModel.putAll(langs); Keys.fillServer(dataModel); Keys.fillRuntime(dataModel); dataModel.put(Preference.LOCALE_STRING, locale.toString()); fireFreeMarkerActionEvent(templateName, dataModel); } /** * Shows administrator preference function with the specified context. * * @param request the specified request * @param context the specified context */ @RequestProcessing(value = "/admin-preference.do", method = HTTPRequestMethod.GET) public void showAdminPreferenceFunction(final HttpServletRequest request, final HTTPRequestContext context) { final AbstractFreeMarkerRenderer renderer = new ConsoleRenderer(); context.setRenderer(renderer); final String templateName = "admin-preference.ftl"; renderer.setTemplateName(templateName); final Locale locale = Latkes.getLocale(); final Map<String, String> langs = langPropsService.getAll(locale); final Map<String, Object> dataModel = renderer.getDataModel(); dataModel.putAll(langs); dataModel.put(Preference.LOCALE_STRING, locale.toString()); JSONObject preference = null; try { preference = preferenceQueryService.getPreference(); } catch (final ServiceException e) { LOGGER.log(Level.SEVERE, "Loads preference failed", e); } final StringBuilder timeZoneIdOptions = new StringBuilder(); final String[] availableIDs = TimeZone.getAvailableIDs(); for (int i = 0; i < availableIDs.length; i++) { final String id = availableIDs[i]; String option; if (id.equals(preference.optString(Preference.TIME_ZONE_ID))) { option = "<option value=\"" + id + "\" selected=\"true\">" + id + "</option>"; } else { option = "<option value=\"" + id + "\">" + id + "</option>"; } timeZoneIdOptions.append(option); } dataModel.put("timeZoneIdOptions", timeZoneIdOptions.toString()); fireFreeMarkerActionEvent(templateName, dataModel); } /** * Fires FreeMarker action event with the host template name and data model. * * @param hostTemplateName the specified host template name * @param dataModel the specified data model */ private void fireFreeMarkerActionEvent(final String hostTemplateName, final Map<String, Object> dataModel) { try { final ViewLoadEventData data = new ViewLoadEventData(); data.setViewName(hostTemplateName); data.setDataModel(dataModel); eventManager.fireEventSynchronously(new Event<ViewLoadEventData>(Keys.FREEMARKER_ACTION, data)); if (Strings.isEmptyOrNull((String) dataModel.get(Plugin.PLUGINS))) { // There is no plugin for this template, fill ${plugins} with blank. dataModel.put(Plugin.PLUGINS, ""); } } catch (final EventException e) { LOGGER.log(Level.WARNING, "Event[FREEMARKER_ACTION] handle failed, ignores this exception for kernel health", e); } } }