Java tutorial
/******************************************************************************* * Copyright 2013 * Ubiquitous Knowledge Processing (UKP) Lab * Technische Universitt Darmstadt * * 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 de.tudarmstadt.ukp.csniper.webapp.page; import java.io.IOException; import java.util.HashMap; import java.util.Locale; import java.util.Map; import java.util.Properties; import org.apache.commons.lang.StringUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.feedback.FeedbackMessage; import org.apache.wicket.feedback.IFeedbackMessageFilter; import org.apache.wicket.markup.html.WebPage; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.protocol.http.WebApplication; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.springframework.core.io.support.PropertiesLoaderUtils; import org.springframework.security.core.Authentication; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.web.context.support.WebApplicationContextUtils; import de.tudarmstadt.ukp.csniper.webapp.search.cqp.CqpEngine; import de.tudarmstadt.ukp.csniper.webapp.search.cqp.CqpMacro; import de.tudarmstadt.ukp.csniper.webapp.security.page.LogInOutPanel; import de.tudarmstadt.ukp.csniper.webapp.support.task.TaskService; import de.tudarmstadt.ukp.csniper.webapp.support.wicket.ExpandableList; public abstract class ApplicationPageBase extends WebPage { private final static Log LOG = LogFactory.getLog(ApplicationPageBase.class); private static final long serialVersionUID = -1690130604031181803L; private LogInOutPanel logInOutPanel; private InfoPanel helpPanel; private InfoPanel macroPanel; private AjaxLink<Void> openHelp; private AjaxLink<Void> openMacros; private FeedbackPanel feedbackPanel; private Label versionLabel; protected ApplicationPageBase() { commonInit(); } protected ApplicationPageBase(final PageParameters parameters) { super(parameters); commonInit(); } @SuppressWarnings({ "serial" }) private void commonInit() { getSession().setLocale(Locale.ENGLISH); logInOutPanel = new LogInOutPanel("logInOutPanel"); helpPanel = new InfoPanel("helpPanel", "page.help"); macroPanel = new InfoPanel("macroPanel", "page.macros") { @Override protected void initialize() { super.initialize(); Map<String, String> macros = new HashMap<String, String>(); for (CqpMacro macro : CqpEngine.getMacros()) { macros.put(macro.getName(), macro.getBodyAsHtml()); } infoPanel.replaceWith(new ExpandableList("infoPanel", macros)); } }; openHelp = new AjaxLink<Void>("openHelp") { @Override public void onClick(AjaxRequestTarget aTarget) { helpPanel.setVisible(!helpPanel.isVisible()); aTarget.add(helpPanel); } }; openMacros = new AjaxLink<Void>("openMacros") { @Override public void onClick(AjaxRequestTarget aTarget) { macroPanel.setVisible(!macroPanel.isVisible()); aTarget.add(macroPanel); } }; feedbackPanel = new FeedbackPanel("feedbackPanel"); feedbackPanel.setOutputMarkupId(true); feedbackPanel.setFilter(new IFeedbackMessageFilter() { @Override public boolean accept(FeedbackMessage aMessage) { Authentication auth = SecurityContextHolder.getContext().getAuthentication(); String username = auth != null ? auth.getName() : "UNKNOWN"; if (aMessage.isFatal()) { LOG.fatal(username + ": " + aMessage.getMessage()); } else if (aMessage.isError()) { LOG.error(username + ": " + aMessage.getMessage()); } else if (aMessage.isWarning()) { LOG.warn(username + ": " + aMessage.getMessage()); } else if (aMessage.isInfo()) { LOG.info(username + ": " + aMessage.getMessage()); } else if (aMessage.isDebug()) { LOG.debug(username + ": " + aMessage.getMessage()); } return true; } }); Properties props = getVersionProperties(); versionLabel = new Label("version", props.getProperty("version") + " (" + props.getProperty("timestamp") + ")"); add(openHelp); add(openMacros); add(helpPanel); add(macroPanel); add(logInOutPanel); add(feedbackPanel); add(versionLabel); } @Override protected void onConfigure() { super.onConfigure(); // logInOutPanel.setVisible(AuthenticatedWebSession.get().isSignedIn()); openHelp.setVisible(!StringUtils.isBlank(getString("page.help", null, ""))); openMacros.setVisible(!StringUtils.isBlank(getString("page.macros", null, ""))); } public FeedbackPanel getFeedbackPanel() { return feedbackPanel; } public Properties getVersionProperties() { try { return PropertiesLoaderUtils.loadAllProperties("/META-INF/version.properties"); } catch (IOException e) { LOG.error("Unable to load version information", e); return new Properties(); } } public TaskService getTaskService() { return (TaskService) WebApplicationContextUtils .getRequiredWebApplicationContext(((WebApplication) getApplication()).getServletContext()) .getBean("taskService"); } }