/*
    * Copyright (c) 2002-2025 Gargoyle Software Inc.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * https://www.apache.org/licenses/LICENSE-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.htmlunit.javascript.host.html;
  
  import org.htmlunit.html.DomElement;
  import org.htmlunit.html.HtmlMeter;
  import org.htmlunit.javascript.configuration.JsxClass;
  import org.htmlunit.javascript.configuration.JsxConstructor;
  import org.htmlunit.javascript.configuration.JsxGetter;
  import org.htmlunit.javascript.host.dom.NodeList;
  
  /**
   * The JavaScript object {@code HTMLMeterElement}.
   *
   * @author Marc Guillemot
   * @author Ronald Brill
   * @author Ahmed Ashour
   */
  @JsxClass(domClass = HtmlMeter.class)
  public class HTMLMeterElement extends HTMLElement {
  
      /** "Live" labels collection; has to be a member to have equality (==) working. */
      private NodeList labels_;
  
      /**
       * JavaScript constructor.
       */
      @Override
      @JsxConstructor
      public void jsConstructor() {
          super.jsConstructor();
      }
  
      /**
       * The getter for the "value" property.
       * @return the value
       */
      @JsxGetter
      @Override
      public Double getValue() {
          return getAttributeAsDouble(DomElement.VALUE_ATTRIBUTE, 0);
      }
  
      /**
       * The getter for the "min" property.
       * @return the value
       */
      @JsxGetter
      public double getMin() {
          return getAttributeAsDouble("min", 0);
      }
  
      /**
       * The getter for the "max" property.
       * @return the value
       */
      @JsxGetter
      public double getMax() {
          return getAttributeAsDouble("max", 1);
      }
  
      /**
       * The getter for the "low" property.
       * @return the value
       */
      @JsxGetter
      public double getLow() {
          final double val = getAttributeAsDouble("low", Double.MAX_VALUE);
          if (val == Double.MAX_VALUE) {
              return getMin();
          }
          return val;
      }
  
      /**
       * The getter for the "high" property.
       * @return the value
       */
      @JsxGetter
      public double getHigh() {
          final double val = getAttributeAsDouble("high", Double.MIN_VALUE);
          if (val == Double.MIN_VALUE) {
              return getMax();
          }
          return val;
      }
  
     /**
      * The getter for the "optimum" property.
      * @return the value
      */
     @JsxGetter
     public double getOptimum() {
         final double val = getAttributeAsDouble("optimum", Double.MAX_VALUE);
         if (val == Double.MAX_VALUE) {
             return getValue();
         }
         return val;
     }
 
     private double getAttributeAsDouble(final String attributeName, final double defaultValue) {
         try {
             return Double.parseDouble(getDomNodeOrDie().getAttribute(attributeName));
         }
         catch (final NumberFormatException e) {
             return defaultValue;
         }
     }
 
     /**
      * Returns the labels associated with the element.
      * @return the labels associated with the element
      */
     @JsxGetter
     public NodeList getLabels() {
         if (labels_ == null) {
             labels_ = new LabelsNodeList(getDomNodeOrDie());
         }
         return labels_;
     }
 
 }