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.util.impl;
  
  import org.opencms.gwt.client.util.CmsDomUtil;
  
  import com.google.gwt.dom.client.Element;
  
  /**
   * Helper class to retrieve the computed style of an element.<p>
   *
   * This implementation is used for all none MSIE browsers.<p>
   *
   * @since 8.0.0
   */
  public class DocumentStyleImpl {
  
      /**
       * Transforms a CSS property name to its javascript property name (font-size >> fontSize).<p>
       *
       * @param s the property name
       *
       * @return the javascript property name
       */
      protected static native String camelize(String s)/*-{
                                                       return s.replace(/\-(\w)/g, function(all, letter) {
                                                       return letter.toUpperCase();
                                                       });
                                                       }-*/;
  
      /**
       * Removes the opacity attribute from the element's inline-style.<p>
       *
       * @param element the DOM element to manipulate
       */
      public native void clearOpacity(Element element) /*-{
                                                       element.style.removeProperty("opacity");
                                                       }-*/;
  
      /**
       * Returns the computed style of the given element.<p>
       *
       * @param elem the element
       * @param name the name of the CSS property
       *
       * @return the currently computed style
       */
      public String getCurrentStyle(Element elem, String name) {
  
          name = hyphenize(name);
          String propVal = getComputedStyle(elem, name);
          if (CmsDomUtil.Style.opacity.name().equals(name) && ((propVal == null) || (propVal.trim().length() == 0))) {
              propVal = "1";
          }
          return propVal;
      }
  
      /**
       * Transforms the CSS style name to the name of the javascript style property.<p>
       *
       * @param name the name of the CSS property
       *
       * @return the javascript property name
       */
      public String getPropertyName(String name) {
  
          if ("float".equals(name)) {
              return "cssFloat";
          } else if ("class".equals(name)) {
              return "className";
          } else if ("for".equals(name)) {
              return "htmlFor";
          }
          return camelize(name);
      }
  
      /**
       * Hyphenizes the given string.<p>
       *
       * @param name the string to hyphenize
       *
       * @return the result
       */
      protected native String hyphenize(String name) /*-{
                                                     return name.replace(/([A-Z])/g, "-$1").toLowerCase();
                                                     }-*/;
  
      /**
       * Returns the computed style from the DOM object.<p>
       *
       * @param elem the element object
       * @param name name of the CSS property
       *
       * @return the property value
       */
      protected native String getComputedStyle(Element elem, String name) /*-{
                                                                          var cStyle = $doc.defaultView.getComputedStyle(elem, null);
                                                                          if (cStyle == null) {
                                                                          return null;
                                                                          }
                                                                          var value = cStyle.getPropertyValue(name);
                                                                          if (value == "auto" && (name == "width" || name == "height")) {
                                                                          var which = name === "width" ? [ "Left", "Right" ] : [ "Top",
                                                                          "Bottom" ];
                                                                          function getWH() {
                                                                          var val;
                                                                          val = name === "width" ? elem.offsetWidth : elem.offsetHeight;
                                                                          for ( var i = 0; i < which.length; i++) {
                                                                          val -= parseFloat(getComputedStyle(elem, "padding"
                                                                          + which[i])) || 0;
                                                                          val -= parseFloat(getComputedStyle(elem, "border"
                                                                          + which[i] + "Width")) || 0;
  
                                                                          }
                                                                          return Math.max(0, Math.round(val));
                                                                          }
                                                                          value = getWH() + "px";
                                                                          }
  
                                                                          return value;
                                                                          }-*/;
  }
  