/*
    * 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.html;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Map;
  
  import org.apache.commons.lang3.StringUtils;
  import org.htmlunit.SgmlPage;
  
  /**
   * Wrapper for the HTML element "fieldset".
   *
   * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
   * @author David K. Taylor
   * @author <a href="mailto:cse@dynabean.de">Christian Sell</a>
   * @author Ahmed Ashour
   * @author Frank Danek
   * @author Ronald Brill
   */
  public class HtmlFieldSet extends HtmlElement implements DisabledElement, ValidatableElement, FormFieldWithNameHistory {
  
      /** The HTML tag represented by this element. */
      public static final String TAG_NAME = "fieldset";
  
      private final String originalName_;
      private Collection<String> newNames_ = Collections.emptySet();
      private String customValidity_;
  
      /**
       * Creates an instance of HtmlFieldSet
       *
       * @param qualifiedName the qualified name of the element type to instantiate
       * @param page the HtmlPage that contains this element
       * @param attributes the initial attributes
       */
      HtmlFieldSet(final String qualifiedName, final SgmlPage page,
              final Map<String, DomAttr> attributes) {
          super(qualifiedName, page, attributes);
          originalName_ = getAttributeDirect(NAME_ATTRIBUTE);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public boolean willValidate() {
          return false;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void setCustomValidity(final String message) {
          customValidity_ = message;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public boolean isCustomErrorValidityState() {
          return !StringUtils.isEmpty(customValidity_);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public boolean isValid() {
          return true;
      }
  
      @Override
      public boolean isValidValidityState() {
          return !isCustomErrorValidityState();
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      protected void setAttributeNS(final String namespaceURI, final String qualifiedName, final String attributeValue,
              final boolean notifyAttributeChangeListeners, final boolean notifyMutationObservers) {
         final String qualifiedNameLC = StringUtils.toRootLowerCase(qualifiedName);
         if (NAME_ATTRIBUTE.equals(qualifiedNameLC)) {
             if (newNames_.isEmpty()) {
                 newNames_ = new HashSet<>();
             }
             newNames_.add(attributeValue);
         }
         super.setAttributeNS(namespaceURI, qualifiedNameLC, attributeValue, notifyAttributeChangeListeners,
                 notifyMutationObservers);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String getOriginalName() {
         return originalName_;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public Collection<String> getNewNames() {
         return newNames_;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public final String getDisabledAttribute() {
         return getAttributeDirect(ATTRIBUTE_DISABLED);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public final boolean isDisabled() {
         if (hasAttribute(ATTRIBUTE_DISABLED)) {
             return true;
         }
 
         DomNode node = getParentNode();
         while (node != null) {
             if (node instanceof DisabledElement
                     && ((DisabledElement) node).isDisabled()) {
                 return true;
             }
             node = node.getParentNode();
         }
 
         return false;
     }
 }