content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.gwt.client.ui;
  
  import com.google.gwt.event.dom.client.HasMouseOutHandlers;
  import com.google.gwt.event.dom.client.HasMouseOverHandlers;
  import com.google.gwt.event.dom.client.MouseOutEvent;
  import com.google.gwt.event.dom.client.MouseOutHandler;
  import com.google.gwt.event.dom.client.MouseOverEvent;
  import com.google.gwt.event.dom.client.MouseOverHandler;
  import com.google.gwt.event.shared.HandlerRegistration;
  import com.google.gwt.user.client.ui.HTMLPanel;
  
  /**
   * A HTML Panel implementation toggles the I_CmsStateCss.cmsHovering CSS class on mouse over.<p>
   *
   * @since 8.0.0
   */
  public class CmsHTMLHoverPanel extends HTMLPanel implements HasMouseOutHandlers, HasMouseOverHandlers {
  
      /**
       * Creates an HTML hover panel with the specified HTML contents inside a DIV element. Any element within this HTML that has a specified id can contain a child widget.
       *
       * @param html the panel's HTML
       */
      public CmsHTMLHoverPanel(String html) {
  
          super(html);
          setHandler();
      }
  
      /**
       * Creates an HTML hover panel whose root element has the given tag, and with the specified HTML contents. Any element within this HTML that has a specified id can contain a child widget.
       *
       * @param tag the tag of the root element
       * @param html the panel's HTML
       */
      public CmsHTMLHoverPanel(String tag, String html) {
  
          super(tag, html);
          setHandler();
      }
  
      /**
       * @see com.google.gwt.event.dom.client.HasMouseOutHandlers#addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler)
       */
      public HandlerRegistration addMouseOutHandler(MouseOutHandler handler) {
  
          return addDomHandler(handler, MouseOutEvent.getType());
  
      }
  
      /**
       * @see com.google.gwt.event.dom.client.HasMouseOverHandlers#addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler)
       */
      public HandlerRegistration addMouseOverHandler(MouseOverHandler handler) {
  
          return addDomHandler(handler, MouseOverEvent.getType());
      }
  
      /**
       * Sets the hover handler.<p>
       */
      private void setHandler() {
  
          A_CmsHoverHandler handler = new CmsClassHoverHandler(getElement());
          addMouseOutHandler(handler);
          addMouseOverHandler(handler);
      }
  }
  