/**
    * This file Copyright (c) 2011-2018 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.magnoliashell.shellmessage;
  
  import info.magnolia.ui.vaadin.gwt.client.jquerywrapper.JQueryCallback;
  import info.magnolia.ui.vaadin.gwt.client.jquerywrapper.JQueryWrapper;
  import info.magnolia.ui.vaadin.gwt.client.magnoliashell.shell.MagnoliaShellView;
  
  import com.google.gwt.dom.client.Style.Display;
  import com.google.gwt.event.shared.HandlerRegistration;
  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.Event.NativePreviewEvent;
  import com.google.gwt.user.client.Event.NativePreviewHandler;
  import com.google.gwt.user.client.ui.HTML;
  import info.magnolia.ui.vaadin.gwt.client.magnoliashell.viewport.animation.FadeAnimation;
  
  /**
   * Simple notification object that pops up when warnings/errors occur.
   */
  public abstract class ShellMessageWidget extends HTML {
  
      /**
       * Enumeration of possible message types.
       */
      public enum MessageType {
          WARNING, ERROR, INFO
      }
  
      private static final String STYLE_NAME = "v-shell-notification";
  
      private HandlerRegistration eventPreviewReg = null;
  
      private final MagnoliaShellView shell;
  
      private Element messageTypeEl = DOM.createElement("b");
  
      private Element header = DOM.createDiv();
  
      private Element topicEl = DOM.createSpan();
  
      private Element closeEl = DOM.createDiv();
  
      private final String id;
  
      private final String message;
  
      private final String topic;
  
      public ShellMessageWidget(MagnoliaShellView shell, String topic, String message, String id) {
          super();
          this.topic = topic;
          this.shell = shell;
          this.message = message;
          this.id = id;
          eventPreviewReg = Event.addNativePreviewHandler(new NativePreviewHandler() {
              @Override
              public void onPreviewNativeEvent(NativePreviewEvent event) {
                  if (event.getTypeInt() == Event.ONCLICK) {
                      final Element targetEl = event.getNativeEvent().getEventTarget().cast();
                      if (getElement().isOrHasChild(targetEl)) {
                          onMessageClicked(targetEl);
                      }
                  }
              }
          });
      }
 
     @Override
     protected void onLoad() {
         super.onLoad();
         sinkEvents(Event.MOUSEEVENTS);
         construct();
         show();
     }
 
     protected void onMessageClicked(Element targetEl) {
         close();
     }
 
     protected void close() {
         hide();
         getShell().closeMessageEager(getId());
     }
 
     protected void construct() {
         topicEl.setInnerText(topic);
         header.appendChild(messageTypeEl);
         header.appendChild(topicEl);
 
         addStyleName(STYLE_NAME);
 
         header.setClassName("header");
         getElement().appendChild(header);
 
         applyCloseIconStyles(closeEl);
         header.appendChild(closeEl);
 
         messageTypeEl.setInnerHTML(getMessageTypeCaption());
     }
 
     protected void applyCloseIconStyles(Element element) {
         element.setClassName("close");
     }
 
     protected abstract String getMessageTypeCaption();
 
     protected int getHeaderHeight() {
         return JQueryWrapper.select(header).cssInt("height");
     }
 
     public void show() {
         getElement().getStyle().setDisplay(Display.NONE);
         JQueryWrapper.select(this).slideDown(300, null);
     }
 
     public void hide() {
         /*JQueryWrapper.select(this).slideUp(300, Callbacks.create(new JQueryCallback() {
             @Override
             public void execute(JQueryWrapper query) {
                 removeFromParent();
             }
         }));     */
         FadeAnimationient/magnoliashell/viewport/animation/FadeAnimation.html#FadeAnimation">FadeAnimation fadeAnimation = new FadeAnimation(0,true);
         fadeAnimation.addCallback(new JQueryCallback() {
             @Override
             public void execute(JQueryWrapper query) {
                 removeFromParent();
             }
         });
         fadeAnimation.run(500,this.getElement());
     }
 
     public void hideWithoutTransition() {
         removeFromParent();
     }
 
     @Override
     public void onBrowserEvent(Event event) {
         super.onBrowserEvent(event);
         int eventCode = event.getTypeInt();
         if (eventCode == Event.ONTOUCHEND) {
             final Element target = event.getEventTarget().cast();
             if (target == closeEl) {
                 close();
             }
         }
     }
 
     @Override
     protected void onUnload() {
         super.onUnload();
         if (eventPreviewReg != null) {
             eventPreviewReg.removeHandler();
         }
     }
 
     public Element getHeader() {
         return header;
     }
 
     protected final MagnoliaShellView getShell() {
         return shell;
     }
 
     public String getMessage() {
         return message;
     }
 
     public String getId() {
         return id;
     }
 
     public String getTopic() {
         return topic;
     }
 
 }