Main.java

/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE file at the root of the source
 * tree and available online at
 *
 * https://github.com/keeps/roda
 */
/**
 * 
 */
package org.roda.wui.client.main;

import java.util.List;

import org.roda.wui.client.browse.BrowserService;
import org.roda.wui.client.common.utils.JavascriptUtils;
import org.roda.wui.client.welcome.Welcome;
import org.roda.wui.common.client.ClientLogger;
import org.roda.wui.common.client.tools.DescriptionLevelUtils;
import org.roda.wui.common.client.tools.HistoryUtils;
import org.roda.wui.common.client.widgets.HTMLWidgetWrapper;
import org.roda.wui.common.client.widgets.wcag.AccessibleFocusPanel;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.Widget;

import config.i18n.client.ClientMessages;

/**
 * @author Luis Faria
 * 
 */
public class Main extends Composite implements EntryPoint {

  private ClientLogger logger = new ClientLogger(getClass().getName());
  private static ClientMessages messages = (ClientMessages) GWT.create(ClientMessages.class);

  @Override
  public void onModuleLoad() {

    // Set uncaught exception handler
    ClientLogger.setUncaughtExceptionHandler();

    // Remove loading image
    RootPanel.getBodyElement().removeChild(DOM.getElementById("loading"));
    NodeList<Element> bodyChilds = RootPanel.getBodyElement().getElementsByTagName("iframe");
    for (int i = 0; i < bodyChilds.getLength(); i++) {
      Element bodyChild = bodyChilds.getItem(i);
      if (!bodyChild.hasAttribute("title")) {
        bodyChild.setAttribute("title", "iframe_title");
      }
    }

    // Add main widget to root panel
    RootPanel.get().add(this);
    RootPanel.get().add(footer);
    RootPanel.get().addStyleName("roda");

    // deferred call to init
    Scheduler.get().scheduleDeferred(new Command() {

      @Override
      public void execute() {
        DescriptionLevelUtils.load(new AsyncCallback<Void>() {

          @Override
          public void onFailure(Throwable caught) {
            logger.error("Failed loading initial data", caught);
          }

          @Override
          public void onSuccess(Void result) {
            init();
          }
        });
      }
    });

    BrowserService.Util.getInstance().isCookiesMessageActive(new AsyncCallback<Boolean>() {

      @Override
      public void onSuccess(Boolean result) {
        if (result) {
          JavascriptUtils.setCookieOptions(messages.cookiesMessage(), messages.cookiesDismisse(),
            messages.cookiesLearnMore(), "#" + Theme.RESOLVER.getHistoryToken() + "/CookiesPolicy.html");
        }
      }

      @Override
      public void onFailure(Throwable caught) {
        logger.error("Error checking if cookies message is active!!", caught);
      }
    });

  }

  interface Binder extends UiBinder<Widget, Main> {
  }

  @UiField
  AccessibleFocusPanel homeLinkArea;

  @UiField
  FlowPanel bannerLogo;

  @UiField(provided = true)
  Menu menu;

  @UiField(provided = true)
  ContentPanel contentPanel;

  Composite footer;

  /**
   * Create a new main
   */
  public Main() {
    menu = new Menu();
    contentPanel = ContentPanel.getInstance();
    footer = new Footer();

    Binder uiBinder = GWT.create(Binder.class);
    initWidget(uiBinder.createAndBindUi(this));
  }

  /**
   * Initialize
   */
  public void init() {
    contentPanel.init();
    onHistoryChanged(History.getToken());
    History.addValueChangeHandler(new ValueChangeHandler<String>() {

      @Override
      public void onValueChange(ValueChangeEvent<String> event) {
        onHistoryChanged(event.getValue());
      }
    });

    bannerLogo.add(new HTMLWidgetWrapper("Banner.html"));

    homeLinkArea.addClickHandler(new ClickHandler() {

      @Override
      public void onClick(ClickEvent event) {
        HistoryUtils.newHistory(Welcome.RESOLVER);
      }
    });

    homeLinkArea.setTitle(messages.homeTitle());
  }

  private void onHistoryChanged(String historyToken) {
    if (historyToken.length() == 0) {
      contentPanel.update(Welcome.RESOLVER.getHistoryPath());
      HistoryUtils.newHistory(Welcome.RESOLVER);
    } else {
      List<String> currentHistoryPath = HistoryUtils.getCurrentHistoryPath();
      contentPanel.update(currentHistoryPath);
      GAnalyticsTracker.track(historyToken);
    }
  }
}