/*
    * Copyright (c) 2002-2026 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 java.net.MalformedURLException;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.htmlunit.css.CssStyleSheet;
  import org.htmlunit.html.HtmlLink;
  import org.htmlunit.html.HtmlPage;
  import org.htmlunit.javascript.JavaScriptEngine;
  import org.htmlunit.javascript.configuration.JsxClass;
  import org.htmlunit.javascript.configuration.JsxConstructor;
  import org.htmlunit.javascript.configuration.JsxGetter;
  import org.htmlunit.javascript.configuration.JsxSetter;
  import org.htmlunit.javascript.host.css.CSSStyleSheet;
  import org.htmlunit.javascript.host.dom.DOMTokenList;
  
  /**
   * The JavaScript object {@code HTMLLinkElement}.
   *
   * @author Ahmed Ashour
   * @author Ronald Brill
   * @author Sven Strickroth
   *
   * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLLinkElement">MDN Documentation</a>
   */
  @JsxClass(domClass = HtmlLink.class)
  public class HTMLLinkElement extends HTMLElement {
  
      private static final Log LOG = LogFactory.getLog(HTMLLinkElement.class);
  
      /**
       * The associated style sheet (only valid for links of type
       * <code>&lt;link rel="stylesheet" type="text/css" href="..." /&gt;</code>).
       */
      private CSSStyleSheet sheet_;
  
      /**
       * JavaScript constructor.
       */
      @Override
      @JsxConstructor
      public void jsConstructor() {
          super.jsConstructor();
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public HtmlLink getDomNodeOrDie() {
          return (HtmlLink) super.getDomNodeOrDie();
      }
  
      /**
       * Sets the {@code href} property.
       * @param href the {@code href} property value
       */
      @JsxSetter
      public void setHref(final String href) {
          getDomNodeOrDie().setAttribute("href", href);
      }
  
      /**
       * Returns the value of the {@code href} property.
       * @return the value of the {@code href} property
       */
      @JsxGetter
      public String getHref() {
          final HtmlLink link = getDomNodeOrDie();
          final String href = link.getHrefAttribute();
          if (href.isEmpty()) {
              return href;
          }
          try {
              return ((HtmlPage) link.getPage()).getFullyQualifiedUrl(href).toString();
          }
          catch (final MalformedURLException e) {
              return href;
          }
      }
  
      /**
       * Sets the {@code rel} property.
       * @param rel the {@code rel} property value
      */
     @JsxSetter
     public void setRel(final String rel) {
         getDomNodeOrDie().setAttribute("rel", rel);
     }
 
     /**
      * Returns the value of the {@code rel} property.
      * @return the value of the {@code rel} property
      */
     @JsxGetter
     public String getRel() {
         return getDomNodeOrDie().getRelAttribute();
     }
 
     /**
      * Sets the {@code rev} property.
      * @param rel the {@code rev} property value
      */
     @JsxSetter
     public void setRev(final String rel) {
         getDomNodeOrDie().setAttribute("rev", rel);
     }
 
     /**
      * Returns the value of the {@code rev} property.
      * @return the value of the {@code rev} property
      */
     @JsxGetter
     public String getRev() {
         return getDomNodeOrDie().getRevAttribute();
     }
 
     /**
      * Sets the {@code type} property.
      * @param type the {@code type} property value
      */
     @JsxSetter
     public void setType(final String type) {
         getDomNodeOrDie().setAttribute("type", type);
     }
 
     /**
      * Returns the value of the {@code type} property.
      * @return the value of the {@code type} property
      */
     @JsxGetter
     public String getType() {
         return getDomNodeOrDie().getTypeAttribute();
     }
 
     /**
      * Returns the associated style sheet (only valid for links of type
      * <code>&lt;link rel="stylesheet" type="text/css" href="..." /&gt;</code>).
      * @return the associated style sheet
      */
     public CSSStyleSheet getSheet() {
         if (sheet_ == null) {
             try {
                 final CssStyleSheet sheet = getDomNodeOrDie().getSheet();
                 sheet_ = new CSSStyleSheet(this, getTopLevelScope(getParentScope()), sheet);
             }
             catch (final RuntimeException e) {
                 // Got something unexpected; we can throw an exception in this case.
                 LOG.error("RuntimeException loading stylesheet", e);
                 throw JavaScriptEngine.reportRuntimeError("Exception: " + e);
             }
             catch (final Exception e) {
                 // Got something unexpected; we can throw an exception in this case.
                 LOG.error("Exception loading stylesheet", e);
                 throw JavaScriptEngine.reportRuntimeError("Exception: " + e);
             }
         }
         return sheet_;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     protected boolean isEndTagForbidden() {
         return true;
     }
 
     /**
      * Returns the {@code relList} attribute.
      * @return the {@code relList} attribute
      */
     @JsxGetter
     public DOMTokenList getRelList() {
         return new DOMTokenList(this, "rel");
     }
 
     /**
      * Sets the {@code relList} attribute.
      * @param rel the {@code relList} attribute value
      */
     @JsxSetter
     public void setRelList(final Object rel) {
         if (JavaScriptEngine.isUndefined(rel)) {
             setRel("undefined");
             return;
         }
         setRel(JavaScriptEngine.toString(rel));
     }
 
     /**
      * {@inheritDoc} Overridden to modify browser configurations.
      */
     @Override
     @JsxGetter
     public boolean isDisabled() {
         return super.isDisabled();
     }
 
     /**
      * {@inheritDoc} Overridden to modify browser configurations.
      */
     @Override
     @JsxSetter
     public void setDisabled(final boolean disabled) {
         super.setDisabled(disabled);
     }
 }