/*
    * 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.Map;
  
  import org.htmlunit.SgmlPage;
  import org.xml.sax.Attributes;
  
  /**
   * A factory for elements encountered in parsing the input which are not represented
   * by dedicated element classes.
   *
   * @author Christian Sell
   * @author Ahmed Ashour
   * @author David K. Taylor
   * @author Ronald Brill
   * @author Frank Danek
   */
  public final class UnknownElementFactory implements ElementFactory {
  
      /** The singleton instance. */
      public static final UnknownElementFactory INSTANCE = new UnknownElementFactory();
  
      /** Private singleton constructor. */
      private UnknownElementFactory() {
          // util class
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public HtmlElement createElement(final SgmlPage page, final String tagName, final Attributes attributes) {
          if (page != null && page.isHtmlPage() && tagName.indexOf(':') != -1) {
              final HtmlPage htmlPage = (HtmlPage) page;
              final String prefix = tagName.substring(0, tagName.indexOf(':'));
              final String namespace = htmlPage.getNamespaces().get(prefix);
              return createElementNS(page, namespace, tagName, attributes);
          }
  
          return createElementNS(page, null, tagName, attributes);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public HtmlElement createElementNS(final SgmlPage page, final String namespaceURI,
              final String qualifiedName, final Attributes attributes) {
          final Map<String, DomAttr> attributeMap = DefaultElementFactory.toMap(page, attributes);
          return new HtmlUnknownElement(page, qualifiedName, attributeMap);
      }
  }