/**
    * This file Copyright (c) 2010-2014 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.ui.vaadin.gwt.client.tabsheet.tab.widget;
  
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.event.ActiveTabChangedEvent;
  import info.magnolia.ui.vaadin.gwt.client.tabsheet.event.TabCloseEvent;
  
  import com.google.gwt.dom.client.NativeEvent;
  import com.google.gwt.dom.client.Style.Display;
  import com.google.gwt.event.dom.client.ClickEvent;
  import com.google.gwt.event.dom.client.ClickHandler;
  import com.google.gwt.user.client.DOM;
  import com.google.gwt.user.client.Element;
  import com.google.gwt.user.client.Event;
  import com.google.gwt.user.client.ui.SimplePanel;
  import com.google.web.bindery.event.shared.EventBus;
  import com.googlecode.mgwt.dom.client.event.touch.TouchEndEvent;
  import com.googlecode.mgwt.dom.client.event.touch.TouchEndHandler;
  import com.googlecode.mgwt.ui.client.widget.touch.TouchDelegate;
  import com.vaadin.client.ui.VButton;
  
  /**
   * Tab label in the tab bar.
   */
  public class MagnoliaTabLabel extends SimplePanel {
  
      private Element indicatorsWrapper = DOM.createDiv();
  
      private final Element notificationBox = DOM.createDiv();
  
      private final Element closeElement = DOM.createSpan();
  
      private final Element errorIndicator = DOM.createDiv();
  
      private final VButton textWrapper = new VButton();
  
      private MagnoliaTabWidget tab;
  
      private final TouchDelegate touchDelegate = new TouchDelegate(this);
  
      private EventBus eventBus;
  
      public MagnoliaTabLabel() {
          super(DOM.createElement("li"));
  
          indicatorsWrapper.addClassName("indicators-wrapper");
          textWrapper.getElement().setClassName("tab-title");
          this.add(textWrapper);
  
          indicatorsWrapper = getElement();
  
          closeElement.setClassName("v-shell-tab-close");
          closeElement.addClassName("icon-close");
          notificationBox.setClassName("v-shell-tab-notification");
          errorIndicator.setClassName("v-shell-tab-error");
  
          getElement().appendChild(closeElement);
          getElement().appendChild(notificationBox);
          getElement().appendChild(errorIndicator);
  
          DOM.sinkEvents(getElement(), Event.MOUSEEVENTS | Event.TOUCHEVENTS| Event.FOCUSEVENTS
                  | Event.KEYEVENTS);
          hideNotification();
          setHasError(false);
          // MGNLUI-786: Fixes tab label sizing issue in Chrome.
          setWidth("100px");
      }
  
     @Override
     protected void onLoad() {
         super.onLoad();
         bindHandlers();
     }
 
     private void bindHandlers() {
 
         touchDelegate.addTouchEndHandler(new TouchEndHandler() {
             @Override
             public void onTouchEnd(TouchEndEvent event) {
                 onClickGeneric(event.getNativeEvent());
             }
         });
 
         textWrapper.addClickHandler(new ClickHandler(){
             @Override
             public void onClick(ClickEvent event) {
                 onClickGeneric(event.getNativeEvent());
             }
         });
     }
 
     private void onClickGeneric(NativeEvent nativeEvent){
         textWrapper.setFocus(false);
         final Element target = (Element) nativeEvent.getEventTarget().cast();
         if (closeElement.isOrHasChild(target)) {
             eventBus.fireEvent(new TabCloseEvent(tab));
         } else {
             eventBus.fireEvent(new ActiveTabChangedEvent(tab));
         }
         nativeEvent.stopPropagation();
     }
 
 
     public void setTab(final MagnoliaTabWidget tab) {
         this.tab = tab;
     }
 
     public void updateCaption(final String caption) {
         textWrapper.getElement().setInnerText(caption);
         setWidth("");
     }
 
     public void setClosable(boolean isClosable) {
         closeElement.getStyle().setDisplay(isClosable ? Display.INLINE : Display.NONE);
     }
 
     public void updateNotification(final String text) {
         if (text != null && !text.isEmpty()) {
             notificationBox.getStyle().setDisplay(Display.INLINE_BLOCK);
             notificationBox.setInnerText(text);
         }
     }
 
     public void hideNotification() {
         notificationBox.getStyle().setDisplay(Display.NONE);
     }
 
     public void setHasError(boolean hasError) {
         errorIndicator.getStyle().setDisplay(hasError ? Display.INLINE_BLOCK : Display.NONE);
     }
 
     /**
      * @param eventBus
      */
     public void setEventBus(EventBus eventBus) {
         this.eventBus = eventBus;
     }
 }