/**
    * This file Copyright (c) 2015-2018 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.layout.lazylayout.widget;
  
  import com.google.gwt.dom.client.DivElement;
  import com.google.gwt.dom.client.Element;
  import com.google.gwt.dom.client.ImageElement;
  import com.google.gwt.dom.client.SpanElement;
  import com.google.gwt.dom.client.Style;
  import com.google.gwt.user.client.DOM;
  
  /**
   * Sub implementaton of {@link EscalatorPanel} for thumbnails, aka the legacy 5.x UI.
   *
   * @deprecated since 6.0, will be removed with 5.x UI.
   */
  @Deprecated
  public class EscalatorThumbnailsPanel extends EscalatorPanel {
  
     private static Flyweight flyweight = new Flyweight() {
  
         static final String ICON_STYLE_NAME = "icon";
         static final String THUMBNAIL_STYLE_NAME = "thumbnail";
         static final String THUMBNAIL_IMAGE_STYLE_NAME = "thumbnail-image";
         public static final String CLEARED_STYLE_NAME = "cleared";
  
         @Override
         Element createThumbnail() {
             final DivElement thumbnail = DivElement.as(DOM.createDiv());
             thumbnail.addClassName(THUMBNAIL_STYLE_NAME);
  
             final SpanElement iconFontEl = SpanElement.as(DOM.createSpan());
             iconFontEl.addClassName(ICON_STYLE_NAME);
             Style style = iconFontEl.getStyle();
             style.setDisplay(Style.Display.NONE);
             style.setFontSize(24, Style.Unit.PX);
             style.setLineHeight(1, Style.Unit.PX);
  
             final ImageElement image = ImageElement.as(DOM.createImg());
             image.addClassName(THUMBNAIL_IMAGE_STYLE_NAME);
             image.getStyle().setDisplay(Style.Display.NONE);
  
             thumbnail.appendChild(image);
             thumbnail.appendChild(iconFontEl);
  
             return thumbnail;
         }
  
         @Override
         void setImageSrc(String src, Element thumbnail) {
             final Element img = getImage(thumbnail);
             final Element icon = getIcon(thumbnail);
  
             img.getStyle().setDisplay(Style.Display.INLINE_BLOCK);
             icon.getStyle().setDisplay(Style.Display.NONE);
  
             img.setAttribute("src", src);
             thumbnail.removeClassName(CLEARED_STYLE_NAME);
         }
  
         @Override
         void setIconFontStyle(String style, Element thumbnail) {
             final Element img = getImage(thumbnail);
             final Element icon = getIcon(thumbnail);
  
             img.getStyle().setDisplay(Style.Display.NONE);
             icon.getStyle().setDisplay(Style.Display.INLINE_BLOCK);
  
            icon.setClassName(ICON_STYLE_NAME);
            icon.addClassName(style);
            thumbnail.removeClassName(CLEARED_STYLE_NAME);
        }
 
        Element getIcon(Element thumbnail) {
            return Element.as(thumbnail.getChild(1));
        }
 
        @Override
        Element getImage(Element thumbnail) {
            return Element.as(thumbnail.getChild(0));
        }
 
        @Override
        public void clear(Element thumbnail) {
            Element icon = getIcon(thumbnail);
            icon.setClassName(ICON_STYLE_NAME);
            icon.getStyle().setDisplay(Style.Display.NONE);
 
            Element image = getImage(thumbnail);
            image.removeAttribute("src");
            image.getStyle().setDisplay(Style.Display.NONE);
 
            thumbnail.addClassName(CLEARED_STYLE_NAME);
        }
 
        @Override
        void setCaption(String newCaption, Element thumbnail) {
            // no-op
        }
    };
 
    public EscalatorThumbnailsPanel(Listener listener) {
        super(listener, flyweight);
    }
 }