ch.bfh.ti.soed.hs16.srs.purple.view.ViewStructure.java Source code

Introduction

Here is the source code for ch.bfh.ti.soed.hs16.srs.purple.view.ViewStructure.java

Source

/*
 * Copyright (c) 2016 Berner Fachhochschule, Switzerland.
 *
 * Project Smart Reservation System.
 *
 * Distributable under GPL license. See terms of license at gnu.org.
 */
package ch.bfh.ti.soed.hs16.srs.purple.view;

import javax.servlet.annotation.WebServlet;

import com.vaadin.annotations.Theme;
import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.Panel;
import com.vaadin.ui.UI;
import com.vaadin.ui.themes.Reindeer;

import ch.bfh.ti.soed.hs16.srs.purple.controller.LoginController;

/**
 * This UI is the application entry point. A UI may either represent a browser
 * window (or tab) or some part of a html page where a Vaadin application is
 * embedded.
 * <p>
 * The UI is initialized using {@link #init(VaadinRequest)}. This method is
 * intended to be overridden to add component to the user interface and
 * initialize non-component functionality.
 */
@Theme("mytheme")
public class ViewStructure extends UI {

    // static
    private final static String MENU_RESERVATION = "Reservation";
    private final static String MENU_USER_PROFILE = "Benutzerprofil";
    private static String[] MENU_ITEMS = { MENU_RESERVATION, MENU_USER_PROFILE };
    private final static int MENU_HEIGHT = 35;

    // member variables
    private GridLayout fullSite = new GridLayout(2, 3);
    private Label logo = new Label("ReservationsTool");
    private HorizontalLayout header = new HorizontalLayout();
    private HorizontalLayout middle = new HorizontalLayout();
    private MenuBar menu = new MenuBar();
    private Panel contentPanel = new Panel();
    private HorizontalLayout loginLogoutPart = new HorizontalLayout();

    private LoginController loginController = new LoginController();
    private RegistrationView registrationView = new RegistrationView();
    private LoginView loginView = new LoginView(this, loginController);
    private ReservationView reservationView = new ReservationView();
    private UserProfileView userProfileView = new UserProfileView();

    /**
     * Function inits the components of the graphical userinterface (GUI).
     *
     * @param vaadinRequest
     *            - The vaadin request
     */
    @Override
    protected void init(VaadinRequest vaadinRequest) {

        this.contentPanel.setStyleName(Reindeer.PANEL_LIGHT);
        this.contentPanel.setSizeFull();
        this.contentPanel.addStyleName("contenPanel");
        this.contentPanel.setImmediate(true);
        this.logo.addStyleName("logo");

        this.reservationView.initView();
        this.registrationView.initView();
        this.userProfileView.initView();

        initMenu();

        if (this.loginController.isUserLoggedInOnSession()) {
            this.menu.setVisible(true);
            setContent(this.reservationView);
        } else {
            this.menu.setVisible(false);
            setContent(this.registrationView);
        }

        this.fullSite.setImmediate(true);
        this.loginView.initView();
        this.loginView.display(this.loginLogoutPart);

        this.fullSite.addComponent(this.logo, 0, 0);
        this.fullSite.setComponentAlignment(this.logo, Alignment.MIDDLE_LEFT);
        this.fullSite.addComponent(this.loginLogoutPart, 1, 0);
        this.fullSite.setComponentAlignment(this.loginLogoutPart, Alignment.MIDDLE_RIGHT);
        this.fullSite.setRowExpandRatio(0, 0);

        this.fullSite.addComponent(this.menu, 0, 1, 1, 1);
        this.fullSite.setComponentAlignment(this.menu, Alignment.TOP_LEFT);

        this.fullSite.addComponent(this.contentPanel, 0, 2, 1, 2);
        this.fullSite.setComponentAlignment(this.contentPanel, Alignment.TOP_LEFT);
        this.fullSite.setRowExpandRatio(2, 10);

        this.fullSite.setSizeFull();
        this.setContent(this.fullSite);

    }

    /**
     * Function initialize the menubar (navifation).
     */
    private void initMenu() {
        // Define a common menu command for all the menu items.
        MenuBar.Command menuSelected = new MenuBar.Command() {
            @Override
            public void menuSelected(MenuBar.MenuItem selectedItem) {

                switch (selectedItem.getText()) {
                case (MENU_RESERVATION):
                    setContent(ViewStructure.this.reservationView);
                    break;
                case (MENU_USER_PROFILE):
                    setContent(ViewStructure.this.userProfileView);
                    break;

                }
            }
        };

        this.menu.setWidth(100, Unit.PERCENTAGE);
        this.menu.setHeight(MENU_HEIGHT, Unit.PIXELS);

        for (String menu : MENU_ITEMS) {
            this.menu.addItem(menu, null, menuSelected);
        }
    }

    /**
     * Function updates the login/logout part of the view. The menu will also be
     * removed on logout and added on login.
     *
     * @param layout
     *            - The layout
     * @param loggedIn
     *            - logged in or not
     */
    public void refreshLoginLogoutContent(HorizontalLayout layout, boolean loggedIn) {
        if (loggedIn) {
            this.menu.setVisible(true);
            setContent(this.reservationView);
        } else {
            this.menu.setVisible(false);
            setContent(this.registrationView);
        }

        this.fullSite.replaceComponent(this.loginLogoutPart, layout);
        this.fullSite.setComponentAlignment(layout, Alignment.MIDDLE_RIGHT);

        this.loginLogoutPart = layout;
    }

    /**
     * Function sets the content with a view.
     */
    private void setContent(ViewTemplate view) {
        view.display(this.contentPanel);
    }

    /**
     * Servlet: Is used to set to the start view.
     */
    @WebServlet(urlPatterns = "/*", name = "MyUIServlet", asyncSupported = true)
    @VaadinServletConfiguration(ui = ViewStructure.class, productionMode = false)
    public static class MyUIServlet extends VaadinServlet {
    }
}