Java tutorial
/******************************************************************************* * Copyright (c) 2015 University of Luxembourg. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Anton Nikonienkov - iCrash HTML5 API and implementation ******************************************************************************/ package lu.uni.lassy.excalibur.examples.icrash.dev.web.java.views; import java.io.Serializable; import java.util.Locale; import org.apache.log4j.Logger; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PiePlot3D; import org.jfree.data.general.DefaultPieDataset; import com.vaadin.data.util.converter.Converter; import com.vaadin.event.ShortcutAction.KeyCode; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent; import com.vaadin.server.Page; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.ComboBox; import com.vaadin.ui.GridLayout; import com.vaadin.ui.TextField; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.Panel; import com.vaadin.ui.PasswordField; import com.vaadin.ui.Table; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.ValoTheme; import org.vaadin.addon.JFreeChartWrapper; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.entrypoints.AdministratorLauncher; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.entrypoints.misc.CoordinatorServlet; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.environment.IcrashEnvironment; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.environment.actors.ActAdministrator; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.IcrashSystem; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.db.DbSurvey; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.CtAdministrator; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.DtCoordinatorID; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.DtFacePrint; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.DtLogin; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.DtPassword; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.system.types.primary.DtQuestionID; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.types.stdlib.PtString; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.utils.AdminActors; import lu.uni.lassy.excalibur.examples.icrash.dev.web.java.utils.Log4JUtils; public class AdminAuthView extends VerticalLayout implements View, Serializable { private static final long serialVersionUID = -1119522327335514726L; public static final String ACCOUNT_SID = "AC00c61b40905ba951205c0ceebbd83208"; public static final String AUTH_TOKEN = "52a2ec261dc16f236293c43480724c05"; static Logger log = Log4JUtils.getInstance().getLogger(); IcrashSystem sys = IcrashSystem.getInstance(); IcrashEnvironment env = IcrashEnvironment.getInstance(); ActAdministrator actAdmin = env.getActAdministrator(new DtLogin(new PtString(AdminActors.values[0].name()))); CtAdministrator ctAdmin = (CtAdministrator) sys.getCtAuthenticated(actAdmin); Label welcomeText = new Label(); Panel diagramPanel = new Panel("Diagram"); String face = ""; // a handy Java 8 way to add a listener to a component Button logoutBtn = new Button("Logout", this::LogoutClick); public void LogoutClick(ClickEvent event) { ActAdministrator actAdmin = env .getActAdministrator(new DtLogin(new PtString(AdminActors.values[0].name()))); try { actAdmin.oeLogout(); } catch (Exception e) { e.printStackTrace(); } // refresh this view, that will force redirection of the user // to the view, where he should go now, be it AdminLoginView or AdminAuthView Page.getCurrent().reload(); } private Button loadButton = new Button("Load photo", this::Load); public void Load(ClickEvent event) { face = "123"; } public AdminAuthView() { setSizeFull(); VerticalLayout header = new VerticalLayout(); header.setSizeFull(); HorizontalLayout content = new HorizontalLayout(); content.setSizeFull(); addComponents(header, content); setExpandRatio(header, 1); setExpandRatio(content, 6); welcomeText.setValue("<h1>Welcome to the iCrash Administrator console!</h1>"); welcomeText.setContentMode(ContentMode.HTML); welcomeText.setSizeUndefined(); header.addComponent(welcomeText); header.setComponentAlignment(welcomeText, Alignment.MIDDLE_CENTER); Panel controlPanel = new Panel("Administrator control panel"); controlPanel.setSizeUndefined(); Panel addCoordPanel = new Panel("Create a new coordinator"); addCoordPanel.setSizeUndefined(); Panel messagesPanel = new Panel("Administrator messages"); messagesPanel.setWidth("580px"); Table adminMessagesTable = new Table(); adminMessagesTable.setContainerDataSource(actAdmin.getMessagesDataSource()); adminMessagesTable.setColumnWidth("inputEvent", 180); adminMessagesTable.setSizeFull(); VerticalLayout controlLayout = new VerticalLayout(controlPanel); controlLayout.setSizeFull(); controlLayout.setMargin(false); controlLayout.setComponentAlignment(controlPanel, Alignment.TOP_CENTER); VerticalLayout coordOperationsLayout = new VerticalLayout(addCoordPanel); coordOperationsLayout.setSizeFull(); coordOperationsLayout.setMargin(false); coordOperationsLayout.setComponentAlignment(addCoordPanel, Alignment.TOP_CENTER); /******************************************/ coordOperationsLayout.setVisible(true); // main layout in the middle addCoordPanel.setVisible(false); // ...which contains the panel "Create a new coordinator" /******************************************/ HorizontalLayout messagesExternalLayout = new HorizontalLayout(messagesPanel); VerticalLayout messagesInternalLayout = new VerticalLayout(adminMessagesTable); messagesExternalLayout.setSizeFull(); messagesExternalLayout.setMargin(false); messagesExternalLayout.setComponentAlignment(messagesPanel, Alignment.TOP_CENTER); messagesInternalLayout.setMargin(false); messagesInternalLayout.setSizeFull(); messagesInternalLayout.setComponentAlignment(adminMessagesTable, Alignment.TOP_CENTER); messagesPanel.setContent(messagesInternalLayout); messagesPanel.setVisible(false); TextField idCoordAdd = new TextField(); TextField loginCoord = new TextField(); PasswordField pwdCoord = new PasswordField(); Label idCaptionAdd = new Label("ID"); Label loginCaption = new Label("Login"); Label pwdCaption = new Label("Password"); idCaptionAdd.setSizeUndefined(); idCoordAdd.setSizeUndefined(); loginCaption.setSizeUndefined(); loginCoord.setSizeUndefined(); pwdCaption.setSizeUndefined(); pwdCoord.setSizeUndefined(); loadButton.setStyleName(ValoTheme.BUTTON_PRIMARY); Button validateNewCoord = new Button("Validate"); validateNewCoord.setStyleName(ValoTheme.BUTTON_PRIMARY); GridLayout addCoordinatorLayout = new GridLayout(2, 4); addCoordinatorLayout.setSpacing(true); addCoordinatorLayout.setMargin(true); addCoordinatorLayout.setSizeFull(); addCoordinatorLayout.addComponents(idCaptionAdd, idCoordAdd, loginCaption, loginCoord, pwdCaption, pwdCoord, loadButton, validateNewCoord); addCoordinatorLayout.setComponentAlignment(idCaptionAdd, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(idCoordAdd, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(loginCaption, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(loginCoord, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(pwdCaption, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(pwdCoord, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(loadButton, Alignment.MIDDLE_LEFT); addCoordinatorLayout.setComponentAlignment(validateNewCoord, Alignment.MIDDLE_LEFT); addCoordPanel.setContent(addCoordinatorLayout); content.addComponents(controlLayout, coordOperationsLayout, messagesExternalLayout); content.setComponentAlignment(messagesExternalLayout, Alignment.TOP_CENTER); content.setComponentAlignment(controlLayout, Alignment.TOP_CENTER); content.setComponentAlignment(messagesExternalLayout, Alignment.TOP_CENTER); content.setExpandRatio(controlLayout, 20); content.setExpandRatio(coordOperationsLayout, 10); content.setExpandRatio(messagesExternalLayout, 28); Button addCoordinator = new Button("Add Coordinator"); Button deleteCoordinator = new Button("Delete Coordinator"); ComboBox questions = new ComboBox(); Button createDiagram = new Button("Create diagram"); addCoordinator.addStyleName(ValoTheme.BUTTON_HUGE); deleteCoordinator.addStyleName(ValoTheme.BUTTON_HUGE); logoutBtn.addStyleName(ValoTheme.BUTTON_HUGE); createDiagram.addStyleName(ValoTheme.BUTTON_HUGE); questions.addStyleName(ValoTheme.COMBOBOX_HUGE); questions.addItem("Question 1"); questions.addItem("Question 2"); questions.addItem("Question 3"); VerticalLayout buttons = new VerticalLayout(); buttons.setMargin(true); buttons.setSpacing(true); buttons.setSizeFull(); buttons.setDefaultComponentAlignment(Alignment.MIDDLE_CENTER); controlPanel.setContent(buttons); buttons.addComponents(addCoordinator, deleteCoordinator, logoutBtn, questions, createDiagram); /******* DELETE COORDINATOR PANEL BEGIN *********/ Label idCaptionDel = new Label("ID"); TextField idCoordDel = new TextField(); Panel delCoordPanel = new Panel("Delete a coordinator"); coordOperationsLayout.addComponent(delCoordPanel); delCoordPanel.setVisible(false); coordOperationsLayout.setComponentAlignment(delCoordPanel, Alignment.TOP_CENTER); delCoordPanel.setSizeUndefined(); GridLayout delCoordinatorLayout = new GridLayout(2, 2); delCoordinatorLayout.setSpacing(true); delCoordinatorLayout.setMargin(true); delCoordinatorLayout.setSizeFull(); Button deleteCoordBtn = new Button("Delete"); deleteCoordBtn.setClickShortcut(KeyCode.ENTER); deleteCoordBtn.setStyleName(ValoTheme.BUTTON_PRIMARY); delCoordinatorLayout.addComponents(idCaptionDel, idCoordDel); delCoordinatorLayout.addComponent(deleteCoordBtn, 1, 1); delCoordinatorLayout.setComponentAlignment(idCaptionDel, Alignment.MIDDLE_LEFT); delCoordinatorLayout.setComponentAlignment(idCoordDel, Alignment.MIDDLE_LEFT); delCoordPanel.setContent(delCoordinatorLayout); /******* DELETE COORDINATOR PANEL END *********/ /******* DIAGRAM PANEL BEGIN *********/ coordOperationsLayout.addComponent(diagramPanel); diagramPanel.setVisible(false); coordOperationsLayout.setComponentAlignment(diagramPanel, Alignment.TOP_CENTER); diagramPanel.setSizeUndefined(); /******* DIAGRAM PANEL END *********/ /************************************************* MAIN BUTTONS LOGIC BEGIN *************************************************/ addCoordinator.addClickListener(event -> { if (!addCoordPanel.isVisible()) { delCoordPanel.setVisible(false); diagramPanel.setVisible(false); addCoordPanel.setVisible(true); idCoordAdd.focus(); } else addCoordPanel.setVisible(false); }); deleteCoordinator.addClickListener(event -> { if (!delCoordPanel.isVisible()) { addCoordPanel.setVisible(false); diagramPanel.setVisible(false); delCoordPanel.setVisible(true); idCoordDel.focus(); } else delCoordPanel.setVisible(false); }); createDiagram.addClickListener(event -> { DtQuestionID id = new DtQuestionID(new PtString((String) questions.getValue())); Integer[] responses = new Integer[3]; actAdmin.oeGetStats(id, responses); int qid = id.value.getValue().charAt(id.value.getValue().length() - 1); qid = qid - 48; String name = DbSurvey.getQuestion(qid); drawGraph(name, responses); if (!diagramPanel.isVisible()) { addCoordPanel.setVisible(false); delCoordPanel.setVisible(false); diagramPanel.setVisible(true); } }); /************************************************* MAIN BUTTONS LOGIC END *************************************************/ /************************************************* ADD COORDINATOR FORM LOGIC BEGIN *************************************************/ validateNewCoord.addClickListener(event -> { String currentURL = Page.getCurrent().getLocation().toString(); int strIndexCreator = currentURL.lastIndexOf(AdministratorLauncher.adminPageName); String iCrashURL = currentURL.substring(0, strIndexCreator); String googleShebang = "#!"; String coordURL = iCrashURL + CoordinatorServlet.coordinatorsName + googleShebang; try { sys.oeAddCoordinator(new DtCoordinatorID(new PtString(idCoordAdd.getValue())), new DtLogin(new PtString(loginCoord.getValue())), new DtPassword(new PtString(pwdCoord.getValue())), new DtFacePrint(new PtString(face))); // open new browser tab with the newly created coordinator console... // "_blank" instructs the browser to open a new tab instead of a new window... // unhappily not all browsers interpret it correctly, // some versions of some browsers might still open a new window instead (notably Firefox)! Page.getCurrent().open(coordURL + idCoordAdd.getValue(), "_blank"); } catch (Exception e) { e.printStackTrace(); } idCoordAdd.setValue(""); loginCoord.setValue(""); pwdCoord.setValue(""); idCoordAdd.focus(); }); /************************************************* ADD COORDINATOR FORM LOGIC END *************************************************/ /************************************************* DELETE COORDINATOR FORM LOGIC BEGIN *************************************************/ deleteCoordBtn.addClickListener(event -> { IcrashSystem sys = IcrashSystem.getInstance(); try { sys.oeDeleteCoordinator(new DtCoordinatorID(new PtString(idCoordDel.getValue()))); } catch (Exception e) { e.printStackTrace(); } idCoordDel.setValue(""); idCoordDel.focus(); }); /************************************************* DELETE COORDINATOR FORM LOGIC END *************************************************/ } private void drawGraph(String name, Integer[] responses) { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("Answer 1", responses[0].doubleValue()); dataset.setValue("Answer 2", responses[1].doubleValue()); dataset.setValue("Answer 3", responses[2].doubleValue()); JFreeChart chart = ChartFactory.createPieChart3D(name, dataset, true, true, false); PiePlot3D plot = (PiePlot3D) chart.getPlot(); plot.setForegroundAlpha(0.5f); plot.setCircular(true); final JFreeChartWrapper chartP = new JFreeChartWrapper(chart); GridLayout diagramLayout = new GridLayout(2, 2); diagramLayout.setSpacing(true); diagramLayout.setMargin(true); diagramLayout.setSizeFull(); diagramLayout.addComponent(chartP); diagramPanel.setContent(diagramLayout); } @Override public void enter(ViewChangeEvent event) { } // for demonstration only, as it is not in the spec! so should remove that for compliance public static void oeLogoutReturnedFalse() { log.info("oeLogout returned false! Some of its pre- or postconditions were not satisfied. Try again."); } public class StringToPtStringConverter implements Converter<String, PtString> { private static final long serialVersionUID = 8637366394272581738L; public Class<PtString> getModelType() { return PtString.class; } public Class<String> getPresentationType() { return String.class; } @Override public PtString convertToModel(String value, Class<? extends PtString> targetType, Locale locale) throws com.vaadin.data.util.converter.Converter.ConversionException { if (value == null) { return null; } return new PtString(value); } @Override public String convertToPresentation(PtString value, Class<? extends String> targetType, Locale locale) throws com.vaadin.data.util.converter.Converter.ConversionException { if (targetType == null) { return null; } else { return value.getValue(); } } } }