Aplikator.java

package org.aplikator.client.local;


import javax.annotation.PostConstruct;
import javax.inject.Inject;
import java.util.List;

import org.aplikator.client.local.command.WelcomeScreen;
import org.aplikator.client.local.processes.ProcessInformations;
import org.aplikator.client.local.widgets.Messages;
import org.aplikator.client.shared.descriptor.ActionDTO;
import org.aplikator.client.shared.descriptor.ApplicationDTO;
import org.aplikator.client.shared.descriptor.MenuDTO;
import org.aplikator.client.shared.rpc.AplikatorErrorCallback;
import org.aplikator.client.shared.rpc.AplikatorService;
import org.gwtbootstrap3.client.ui.AnchorButton;
import org.gwtbootstrap3.client.ui.AnchorListItem;
import org.gwtbootstrap3.client.ui.Button;
import org.gwtbootstrap3.client.ui.DropDownMenu;
import org.gwtbootstrap3.client.ui.Label;
import org.gwtbootstrap3.client.ui.ListDropDown;
import org.gwtbootstrap3.client.ui.NavbarBrand;
import org.gwtbootstrap3.client.ui.NavbarNav;
import org.gwtbootstrap3.client.ui.constants.Toggle;
import org.gwtbootstrap3.client.ui.html.Div;
import org.jboss.errai.common.client.api.RemoteCallback;
import org.jboss.errai.enterprise.client.jaxrs.api.RestClient;
import org.jboss.errai.ioc.client.api.EntryPoint;
import org.jboss.errai.ui.nav.client.local.HistoryWrapper;
import org.jboss.errai.ui.nav.client.local.Navigation;
import org.jboss.errai.ui.nav.client.local.TransitionTo;
import org.slf4j.LoggerFactory;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.SimplePanel;


/**
 * Entry point class of Aplikator application (defines <code>onModuleLoad()</code> ).
 */
@EntryPoint
public class Aplikator {

    public static final int MAINMENUBAR_HEIGHT = 52;
    private static final org.slf4j.Logger LOG = LoggerFactory.getLogger(Aplikator.class);
    public static ApplicationDTO application;

    private static AplikatorUiBinder ourUiBinder = GWT.create(AplikatorUiBinder.class);
    @UiField
    Div mainPanel;
    @UiField
    NavbarNav mainMenuHolder;
    @UiField
    NavbarBrand homeButton;
    @UiField
    AnchorListItem processes;
    //@UiField
    //AnchorListItem profile;

    @UiField
    Label username;

    @UiField
    Button login;

    @UiField
    SimplePanel contents;
    @Inject
    TransitionTo<WelcomeScreen> homeButtonClicked;
    @Inject
    private WelcomeScreen welcomeScreen;

    @Inject
    private Navigation navigation;

    public static String getBaseURL() {
        String moduleBase = GWT.getModuleBaseURL();
        String moduleName = GWT.getModuleName();
        return moduleBase.substring(0, moduleBase.lastIndexOf(moduleName));
    }

    /**
     * Aplikator client entry point method.
     */

    @PostConstruct
    public final void onModuleLoad() {
        //PushStateUtil.enablePushState(true);
        Navigation.setAppContext("");
        RestClient.setApplicationRoot("");

        //RestClient.setJacksonMarshallingActive(true);
        GWT.setUncaughtExceptionHandler(new GWT.UncaughtExceptionHandler() {
            public void onUncaughtException(Throwable e) {
                LOG.error(e.getMessage(), e);
            }
        });


        mainPanel = ourUiBinder.createAndBindUi(this);
        contents.add(navigation.getContentPanel());

        RootPanel.get().add(mainPanel);
        reloadApplication(false);
    }

    public void reloadApplication(final boolean forceHome) {
        RestClient.create(AplikatorService.class, new RemoteCallback<ApplicationDTO>() {
                    @Override
                    public void callback(ApplicationDTO resp) {
                        application = resp;
                        initPanels();
                        Messages.cleanAll();
                        if (application.isShowNavigation()) {
                            setupMainMenu(application.getMenus());
                        }
                        if (application.getDefaultActionToken() != null) {
                            HistoryWrapper.newItem(application.getDefaultActionToken(), true);
                        } else if (forceHome) {
                            homeButtonClicked.go();
                        }
                    }
                }, new AplikatorErrorCallback(null)
        ).getApplication();

    }

    private void initPanels() {

        homeButton.setText(application.getConfigString("aplikator.brand"));
        if (application.isShowNavigation()) {
            homeButton.addClickHandler(new ClickHandler() {
                @Override
                public void onClick(ClickEvent event) {
                    homeButtonClicked.go();
                }
            });
        }
        processes.setText(application.getConfigString("aplikator.menu.processes"));
        if (application.getUsername() == null) {
            username.setText("");
            login.setText(application.getConfigString("aplikator.menu.login"));
        } else {
            username.setText(application.getUsername());
            login.setText(application.getConfigString("aplikator.menu.logout"));
        }

    }


    @UiHandler("processes")
    public void displayProcesses(ClickEvent event) {
        ProcessInformations pi = new ProcessInformations();
        pi.display();
    }

    @UiHandler("login")
    public void displayProfile(ClickEvent event) {
        if (application.getUsername() == null) {
            HistoryWrapper.newItem("login", true);
        } else {
            RestClient.create(AplikatorService.class, new RemoteCallback<Void>() {
                        @Override
                        public void callback(Void response) {
                            reloadApplication(true);
                        }
                    },
                    new AplikatorErrorCallback()
            ).logout();
        }
    }

    private void setupMainMenu(List<MenuDTO> menus) {
        mainMenuHolder.clear();
        for (MenuDTO menu : menus) {
            ListDropDown menuDropdown = new ListDropDown();

            AnchorButton menuButton = new AnchorButton();
            menuButton.setText(menu.getLocalizedName());
            menuButton.setDataToggle(Toggle.DROPDOWN);
            DropDownMenu menuItems = new DropDownMenu();
            menuDropdown.add(menuButton);
            menuDropdown.add(menuItems);
            mainMenuHolder.add(menuDropdown);
            for (final ActionDTO action : menu.getActions()) {
                AnchorListItem menuItem = new AnchorListItem();
                menuItem.setText(action.getLocalizedName());
                menuItem.setHref("#" + action.getToken());
                menuItem.addClickHandler(new ClickHandler() {
                    @Override
                    public void onClick(ClickEvent event) {
                        HistoryWrapper.newItem(action.getToken(), true);
                    }
                });
                menuItems.add(menuItem);
            }
        }
    }


    interface AplikatorUiBinder extends UiBinder<Div, Aplikator> {
    }

    public void displayLoginButton(boolean displayLoginButton) {
        login.setVisible(displayLoginButton);
    }

}