improve loading of documents into HTML5

[php-utility-classes.git] / classes / document.php-class

<?php
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */

class ExtendedDocument extends DOMDocument {
  // ExtendedDocument PHP class
  // this extends the general PHP DOM Document class to simplify some usual constructs
  //
  // function __construct([$version], [$encoding])
  //   CONSTRUCTOR
  //   construct a new DOM Document that uses our element definitions
  //
  // static function initHTML5([$doc])
  //   initialize as an HTML5 document and return references to its basic elements.
  //     If a $doc is handed over (an ExtendedDocument or a derived class), load the content into that document.
  //     returns an associative array with the following elements: 'html', 'head', 'title', 'body'
  //
  // public function loadHTML5($source) {
  //   A version of loadHTML() - see DOMDocument documentation - that is made for loading HTML5 and not emitting warnings/errors for unknown elements.
  //     returns true on success, false otherwise, just like loadHTML5.
  //
  // public function appendElement($name, [$value])
  //   appends a DOMDocument::createElement() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendElementXML($name, $xmldata)
  //   appends a DOMDocument::createElement() with the given name as a child of this document,
  //   with an ExtendedDocument::createXMLFragment() of the given XML data inside
  //     returns the new child
  //
  // public function appendLink($target, [$value], [$title])
  //   appends an ExtendedDocument::createElementLink() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendImage($src, [$alt_text])
  //   appends an ExtendedDocument::createElementImage() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendForm($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendFormDiv($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this document (see there for params)
  //     returns an HTML <div> that is a child of the new child
  //
  // public function appendInputHidden($name, $value)
  //   appends an ExtendedDocument::createElementInputHidden() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputText($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputText() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputPassword($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputPassword() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputNumber($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputNumber() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputRange($name, $id, $min, $max, [$step], [$value])
  //   appends an ExtendedDocument::createElementInputRange() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputSearch($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputSearch() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputUrl($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputUrl() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputEmail($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputEmail() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputTel($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputTel() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputDate($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputDate() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputTime($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputTime() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputColor($name, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputColor() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputRadio($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputRadio() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputCheckbox($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputCheckbox() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputFile($name, $id, $accept)
  //   appends an ExtendedDocument::createElementInputFile() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendInputSubmit($value)
  //   appends an ExtendedDocument::createElementInputSubmit() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendButton($value, $onclick = null)
  //   appends an ExtendedDocument::createElementButton() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendTextArea($name, $columns, $rows, [$id], [$value])
  //   appends an ExtendedDocument::createElementTextArea() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendElementSelect($name, [$id], [$options], [$default], [$strictmatch])
  //   appends an ExtendedDocument::createElementSelect() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendElementOption($key, $desc, [$selected])
  //   appends an ExtendedDocument::createElementOption() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendLabel($for_id, $value)
  //   appends an ExtendedDocument::createElementLabel() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendElementDatalist([$id], [$options])
  //   appends an ExtendedDocument::createElementDatalist() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendText($text)
  //   appends a DOMDocument::createTextNode() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendLinebreak()
  //   appends a <br> as a child of this document
  //     returns the new child
  //
  // public function appendEntity($name)
  //   appends a DOMDocument::createEntityReference() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendComment($comment_data)
  //   appends a DOMDocument::createComment() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendClonedElement($dom_element, [$deep])
  //   appends a clone of the given DOMElement as a child of this document
  //     the boolean $deep specifies if the children are cloned as well (defaults to TRUE)
  //     returns the new child
  //
  // public function appendHTMLMarkup($htmldata, [$parentNode])
  //   appends a representation of the HTML data as children of the given parent node, by default this document
  //     NO return value!
  //
  // public function appendXMLMarkup($xmldata, [$parentNode])
  //   appends a representation of the XML data as children of the given parent node, by default this document
  //     NO return value!
  //
  // public function appendStyleElement($styledata)
  //   appends an ExtendedDocument::createElementStyle() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendJSElement($jsdata)
  //   appends an ExtendedDocument::createElementJS() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendJSFile($jsURL, [$defer], [$async])
  //   appends an ExtendedDocument::createElementJSFile() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function createElementLink($target, [$value], [$title])
  //   returns an ExtendedElement that is an HTML <a> with the given target (href) and (optional) value as well as (optional) title attribute
  //
  // public function createElementImage($src, [$alt_text])
  //   returns an ExtendedElement that is an HTML <img> with the given src and alt attributes (set to '' by default)
  //
  // public function createElementForm($action, $method, $name)
  //   returns an ExtendedElement that is an HTML <form> with the given action, method, and name
  //
  // public function createElementInputHidden($name, $value)
  //   returns an ExtendedElement that is an HTML <input> of type 'hidden' with the given name and value
  //
  // public function createElementInputText($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'text' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputPassword($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'password' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputNumber($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'number' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputRange($name, $id, $min, $max, [$step], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'range' with the given name, id, min, max,
  //   and optionally step and value
  //
  // public function createElementInputUrl($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'url' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputSearch($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'search' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputEmail($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'email' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputTel($name, $maxlength, $size, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'tel' with the given name, maxlength, size,
  //   and optionally id and value
  //
  // public function createElementInputDate($name, [$id], [$min], [$max], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'date' with the given name,
  //   and optionally id, min, max, and value
  //
  // public function createElementInputTime($name, [$id], [$min], [$max], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'time' with the given name,
  //   and optionally id, min, max, and value
  //
  // public function createElementInputColor($name, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <input> of type 'color' with the given name,
  //   and optionally id and value
  //
  // public function createElementInputRadio($name, $id, $value, $checked)
  //   returns an ExtendedElement that is an HTML <input> of type 'radio' with the given name, id, value and
  //   checked state
  //
  // public function createElementInputCheckbox($name, $id, $value, $checked)
  //   returns an ExtendedElement that is an HTML <input> of type 'checkbox' with the given name, id, value and
  //   checked state
  //
  // public function createElementInputFile($name, $id, $accept)
  //   returns an ExtendedElement that is an HTML <input> of type 'file' with the given name, id and accept
  //
  // public function createElementInputSubmit($value)
  //   returns an ExtendedElement that is an HTML <input> of type 'submit' with the given value as label
  //
  // public function createElementButton($value, $onclick = null)
  //   returns an ExtendedElement that is an HTML button with the given value as label and optionally onclick attribute
  //
  // public function createElementTextArea($name, $columns, $rows, [$id], [$value])
  //   returns an ExtendedElement that is an HTML <textarea> with the given name, columns, rows,
  //   and optionally id and value
  //
  // public function createElementSelect($name, [$id], [$options], [$default], [$strictmatch])
  //   returns an ExtendedElement that is an HTML <select> with the given name, and optionally id,
  //   array of options (key => description) and key of the by-default selected entry (matched including type when strictmatch is true)
  //
  // public function createElementOption($key, $desc, [$selected])
  //   returns an ExtendedElement that is an HTML <option> with the given key (value) and description (content)
  //   and optionally bool that tells if the entry is selected
  //
  // public function createElementLabel($for_id, $value)
  //   returns an ExtendedElement that is an HTML <label> with the given 'for' and value
  //
  // public function createElementDatalist([$id], [$options])
  //   returns an ExtendedElement that is an HTML <datalist> with optionally the given id and array of options (key => description)
  //
  // public function createElementStyle($styledata)
  //   returns an ExtendedElement that is an HTML <style> of CSS type with the style data inside
  //
  // public function createElementJS($jsdata)
  //   returns an ExtendedElement that is an HTML <script> of JavaScript type with the JS data inside
  //
  // public function createElementJSFile($jsURL, [$defer], [$async])
  //   returns an ExtendedElement that is an HTML <script> of JavaScript type linking to the file given by the URL
  //     $defer and $async are boolean attributes that set if the script should be executed after parsing but before onload, and if it should be loaded asynchronously.

  function __construct($version = '1.0', $encoding = 'utf-8') {
    // make sure the default DOMDocument constructor runs
    parent::__construct($version, $encoding);
    $this->registerNodeClass('DOMElement', 'ExtendedElement');
    $this->registerNodeClass('DOMDocumentFragment', 'ExtendedDocumentFragment');
  }

  static function initHTML5($doc = null) {
    if (is_null($doc)) { $doc = new ExtendedDocument(); }
    $doc->loadHTML5('<?xml version="1.0" encoding="utf-8"?>'."\n".'<!DOCTYPE html>'."\n".'<html></html>'); // this seems to be the only way to get the DOCTYPE set properly.

    // Created basic HTML document structure.
    $root = $doc->getElementsByTagName('html')->item(0);
    $head = $root->appendElement('head');
    $title = $head->appendElement('title');
    $body = $root->appendElement('body');

    return array('document' => $doc,
                 'html' => $root,
                 'head' => $head,
                 'title' => $title,
                 'body' => $body);
  }

  public function loadHTML5($source) {
    // Do our own handling of DOMDocument error reporting so we can ignore "unknown tags" which are usually fine in HTML5.
    libxml_use_internal_errors(true);
    if (!preg_match('/^\s*<\?xml /', $source)) {
      // Add an XML declaration to force DOMDocument into UTF-8 mode.
      $source = '<?xml version="1.0" encoding="utf-8"?>'."\n".$source;
    }
    $result = $this->loadHTML($source);
    // Set encoding directly a,d remove any processing node that isn't the first node
    $this->encoding = 'utf-8';
    foreach ($this->childNodes as $i => $child) {
      if ($i && $child->nodeType == XML_PI_NODE) {
        $this->removeChild($child);
      }
    }
    // Handle DOMDocument loading errors, throw away warnings on unknown tags as HTML5 allows all kinds.
    $errseverity = array(LIBXML_ERR_WARNING => 'Warning', LIBXML_ERR_ERROR => 'Error', LIBXML_ERR_FATAL => 'Fatal');
    foreach (libxml_get_errors() as $error) {
      // $error is a libXMLError, see https://www.php.net/manual/en/class.libxmlerror.php
      // See http://www.xmlsoft.org/html/libxml-xmlerror.html#xmlParserErrors for error numbers
      if ($error->code != 801) { // XML_HTML_UNKNOWN_TAG gets no output, should not exist for HTML5.
        trigger_error($errseverity[$error->level].' loading HTML5: '.$error->message.' (code '.$error->code.'), line: '.$error->line, E_USER_WARNING);
      }
    }
    libxml_clear_errors();
    libxml_use_internal_errors(false);
    return $result;
  }

  public function appendElement($name, $value = '') {
    return $this->appendChild($this->createElement($name, $value));
  }
  public function appendElementXML($name, $xmldata) {
    $aelem = $this->appendChild($this->createElement($name));
    $aelem->appendXMLMarkup($xmldata);
    //$aelem->appendChild($this->createXMLFragment($xmldata));
    return $aelem;
  }
  public function appendLink($target, $value = '', $title = null) {
    return $this->appendChild($this->createElementLink($target, $value, $title));
  }
  public function appendImage($src, $alt_text = '') {
    return $this->appendChild($this->createElementImage($src, $alt_text));
  }
  public function appendForm($action, $method, $name, $id = null) {
    return $this->appendChild($this->createElementForm($action, $method, $name, $id));
  }
  public function appendFormDiv($action, $method, $name, $id = null) {
    $formelem = $this->appendChild($this->createElementForm($action, $method, $name, $id));
    return $formelem->appendElement('div');
  }
  public function appendInputHidden($name, $value) {
    return $this->appendChild($this->createElementInputHidden($name, $value));
  }
  public function appendInputText($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputText($name, $maxlength, $size, $id, $value));
  }
  public function appendInputPassword($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputPassword($name, $maxlength, $size, $id, $value));
  }
  public function appendInputNumber($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputNumber($name, $maxlength, $size, $id, $value));
  }
  public function appendInputRange($name, $id, $min, $max, $step = null, $value = null) {
    return $this->appendChild($this->createElementInputRange($name, $id, $min, $max, $step, $value));
  }
  public function appendInputSearch($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputSearch($name, $maxlength, $size, $id, $value));
  }
  public function appendInputUrl($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputUrl($name, $maxlength, $size, $id, $value));
  }
  public function appendInputEmail($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputEmail($name, $maxlength, $size, $id, $value));
  }
  public function appendInputTel($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputTel($name, $maxlength, $size, $id, $value));
  }
  public function appendInputDate($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->createElementInputDate($name, $id, $min, $max, $value));
  }
  public function appendInputTime($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->createElementInputTime($name, $id, $min, $max, $value));
  }
  public function appendInputColor($name, $id = null, $value = null) {
    return $this->appendChild($this->createElementInputColor($name, $id, $value));
  }
  public function appendInputRadio($name, $id, $value, $checked) {
    return $this->appendChild($this->createElementInputRadio($name, $id, $value, $checked));
  }
  public function appendInputCheckbox($name, $id, $value, $checked) {
    return $this->appendChild($this->createElementInputCheckbox($name, $id, $value, $checked));
  }
  public function appendInputFile($name, $id, $accept) {
    return $this->appendChild($this->createElementInputFile($name, $id, $accept));
  }
  public function appendInputSubmit($value) {
    return $this->appendChild($this->createElementInputSubmit($value));
  }
  public function appendButton($value, $onclick = null) {
    return $this->appendChild($this->createElementButton($value, $onclick));
  }
  public function appendTextArea($name, $columns, $rows, $id = null, $value = null) {
    return $this->appendChild($this->createElementTextArea($name, $columns, $rows, $id, $value));
  }
  public function appendElementSelect($name, $id = null, $options = array(), $default = null, $strictmatch = false) {
    return $this->appendChild($this->createElementSelect($name, $id, $options, $default, $strictmatch));
  }
  public function appendElementOption($key, $desc, $selected = false) {
    return $this->appendChild($this->createElementOption($key, $desc, $selected));
  }
  public function appendLabel($for_id, $value) {
    return $this->appendChild($this->createElementLabel($for_id, $value));
  }
  public function appendElementDatalist($id = null, $options = array()) {
    return $this->appendChild($this->createElementDatalist($id, $options));
  }
  public function appendText($text) {
    return $this->appendChild($this->createTextNode($text));
  }
  public function appendLinebreak() {
    return $this->appendChild($this->createElement('br'));
  }
  public function appendEntity($name) {
    return $this->appendChild($this->createEntityReference($name));
  }
  public function appendComment($comment_data) {
    return $this->appendChild($this->createComment($comment_data));
  }
  public function appendClonedElement($dom_element, $deep = true) {
    return $this->appendChild($dom_element->cloneNode($deep));
  }
  public function appendStyleElement($styledata) {
    return $this->appendChild($this->createElementStyle($styledata));
  }
  public function appendJSElement($jsdata) {
    return $this->appendChild($this->createElementJS($jsdata));
  }
  public function appendJSFile($jsURL, $defer = false, $async = false) {
    return $this->appendChild($this->createElementJSFile($jsURL, $defer, $async));
  }

  public function appendHTMLMarkup($htmldata, $parentNode = null) {
    if (is_null($parentNode)) { $parentNode =& $this; }
    // Use loadHTML5() to parse and turn the markup into proper HTML.
    $tmpdoc = new ExtendedDocument;
    // The XML line is needed to tell the parser that we need UTF-8 parsing.
    $tmpdoc->loadHTML5('<?xml version="1.0" encoding="utf-8"?>'."\n".'<!DOCTYPE html>'."\n".'<html><body>'.$htmldata.'</body></html>');
    foreach ($tmpdoc->getElementsByTagName('body')->item(0)->childNodes as $child) {
      $parentNode->appendChild($this->importNode($child, true));
    }
  }

  public function appendXMLMarkup($xmldata, $parentNode = null) {
    if (is_null($parentNode)) { $parentNode =& $this; }
    $tmpdoc = new ExtendedDocument;
    $tmpxml = '<?xml version="1.0" encoding="utf-8"?>'."\n";
    $tmpxml .= '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'."\n";
    $tmpxml .= '<root>'.$xmldata.'</root>';
    $tmpdoc->loadXML($tmpxml);
    foreach ($tmpdoc->getElementsByTagName('root')->item(0)->childNodes as $child) {
      $parentNode->appendChild($this->importNode($child, true));
    }
  }

  public function createElement($name, $value = '') {
    // Adding the $value in DOMDocument's createElement does NOT escape it, so override it and use appendText to support that.
    $aelem = parent::createElement($name);
    if (strlen($value ?? '')) { $aelem->appendText($value); }
    return $aelem;
  }

  public function createElementLink($target, $value = '', $title = null) {
    $link = $this->createElement('a', $value);
    $link->setAttribute('href', $target); // XXX: take care of & etc. in links
    if (!is_null($title)) { $link->setAttribute('title', $title); }
    return $link;
  }

  public function createElementImage($src, $alt_text = '') {
    $img = $this->createElement('img');
    $img->setAttribute('src', $src);
    $img->setAttribute('alt', $alt_text);
    return $img;
  }

  public function createElementForm($action, $method, $name, $id = null) {
    $formelem = $this->createElement('form');
    $formelem->setAttribute('action', $action);
    $formelem->setAttribute('method', $method);
    $formelem->setAttribute('name', $name);
    if (!is_null($id)) { $formelem->setAttribute('id', $id); }
    return $formelem;
  }

  public function createElementInputHidden($name, $value) {
    $hidden = $this->createElement('input');
    $hidden->setAttribute('type', 'hidden');
    $hidden->setAttribute('name', $name);
    $hidden->setAttribute('value', $value);
    return $hidden;
  }

  public function createElementInputText($name, $maxlength, $size, $id = null, $value = null) {
    $txfield = $this->createElement('input');
    $txfield->setAttribute('type', 'text');
    if (!is_null($id)) { $txfield->setAttribute('id', $id); }
    $txfield->setAttribute('name', $name);
    $txfield->setAttribute('maxlength', $maxlength);
    $txfield->setAttribute('size', $size);
    if (!is_null($value)) { $txfield->setAttribute('value', $value); }
    return $txfield;
  }

  public function createElementInputPassword($name, $maxlength, $size, $id = null, $value = null) {
    $pwfield = $this->createElement('input');
    $pwfield->setAttribute('type', 'password');
    if (!is_null($id)) { $pwfield->setAttribute('id', $id); }
    $pwfield->setAttribute('name', $name);
    $pwfield->setAttribute('maxlength', $maxlength);
    $pwfield->setAttribute('size', $size);
    if (!is_null($value)) { $pwfield->setAttribute('value', $value); }
    return $pwfield;
  }

  public function createElementInputNumber($name, $maxlength, $size, $id = null, $value = null) {
    $numfield = $this->createElement('input');
    $numfield->setAttribute('type', 'number');
    if (!is_null($id)) { $numfield->setAttribute('id', $id); }
    $numfield->setAttribute('name', $name);
    $numfield->setAttribute('maxlength', $maxlength);
    $numfield->setAttribute('size', $size);
    if (!is_null($value)) { $numfield->setAttribute('value', $value); }
    return $numfield;
  }

  public function createElementInputRange($name, $id, $min, $max, $step = null, $value = null) {
    $rgfield = $this->createElement('input');
    $rgfield->setAttribute('type', 'range');
    if (!is_null($id)) { $rgfield->setAttribute('id', $id); }
    $rgfield->setAttribute('name', $name);
    if (!is_null($min)) { $rgfield->setAttribute('min', $min); }
    if (!is_null($max)) { $rgfield->setAttribute('max', $max); }
    if (!is_null($step)) { $rgfield->setAttribute('step', $step); }
    if (!is_null($value)) { $rgfield->setAttribute('value', $value); }
    return $rgfield;
  }

  public function createElementInputSearch($name, $maxlength, $size, $id = null, $value = null) {
    $urlfield = $this->createElement('input');
    $urlfield->setAttribute('type', 'search');
    if (!is_null($id)) { $urlfield->setAttribute('id', $id); }
    $urlfield->setAttribute('name', $name);
    $urlfield->setAttribute('maxlength', $maxlength);
    $urlfield->setAttribute('size', $size);
    if (!is_null($value)) { $urlfield->setAttribute('value', $value); }
    return $urlfield;
  }

  public function createElementInputUrl($name, $maxlength, $size, $id = null, $value = null) {
    $urlfield = $this->createElement('input');
    $urlfield->setAttribute('type', 'url');
    if (!is_null($id)) { $urlfield->setAttribute('id', $id); }
    $urlfield->setAttribute('name', $name);
    $urlfield->setAttribute('maxlength', $maxlength);
    $urlfield->setAttribute('size', $size);
    if (!is_null($value)) { $urlfield->setAttribute('value', $value); }
    return $urlfield;
  }

  public function createElementInputEmail($name, $maxlength, $size, $id = null, $value = null) {
    $mailfield = $this->createElement('input');
    $mailfield->setAttribute('type', 'email');
    if (!is_null($id)) { $mailfield->setAttribute('id', $id); }
    $mailfield->setAttribute('name', $name);
    $mailfield->setAttribute('maxlength', $maxlength);
    $mailfield->setAttribute('size', $size);
    if (!is_null($value)) { $mailfield->setAttribute('value', $value); }
    return $mailfield;
  }

  public function createElementInputTel($name, $maxlength, $size, $id = null, $value = null) {
    $telfield = $this->createElement('input');
    $telfield->setAttribute('type', 'tel');
    if (!is_null($id)) { $telfield->setAttribute('id', $id); }
    $telfield->setAttribute('name', $name);
    $telfield->setAttribute('maxlength', $maxlength);
    $telfield->setAttribute('size', $size);
    if (!is_null($value)) { $telfield->setAttribute('value', $value); }
    return $telfield;
  }

  public function createElementInputDate($name, $id = null, $min = null, $max = null, $value = null) {
    $dtfield = $this->createElement('input');
    $dtfield->setAttribute('type', 'date');
    if (!is_null($id)) { $dtfield->setAttribute('id', $id); }
    $dtfield->setAttribute('name', $name);
    if (!is_null($min)) { $dtfield->setAttribute('min', $min); }
    if (!is_null($max)) { $dtfield->setAttribute('max', $max); }
    if (!is_null($value)) { $dtfield->setAttribute('value', $value); }
    return $dtfield;
  }

  public function createElementInputTime($name, $id = null, $min = null, $max = null, $value = null) {
    $timefield = $this->createElement('input');
    $timefield->setAttribute('type', 'time');
    if (!is_null($id)) { $timefield->setAttribute('id', $id); }
    $timefield->setAttribute('name', $name);
    if (!is_null($min)) { $timefield->setAttribute('min', $min); }
    if (!is_null($max)) { $timefield->setAttribute('max', $max); }
    if (!is_null($value)) { $timefield->setAttribute('value', $value); }
    return $timefield;
  }

  public function createElementInputColor($name, $id = null, $value = null) {
    $colfield = $this->createElement('input');
    $colfield->setAttribute('type', 'color');
    if (!is_null($id)) { $colfield->setAttribute('id', $id); }
    $colfield->setAttribute('name', $name);
    if (!is_null($value)) { $colfield->setAttribute('value', $value); }
    return $colfield;
  }

  public function createElementInputRadio($name, $id, $value, $checked) {
    $radio = $this->createElement('input');
    $radio->setAttribute('type', 'radio');
    $radio->setAttribute('name', $name);
    if (!is_null($id)) { $radio->setAttribute('id', $id); }
    $radio->setAttribute('value', $value);
    if ($checked) { $radio->setAttribute('checked', ''); }
    return $radio;
  }

  public function createElementInputCheckbox($name, $id, $value, $checked) {
    $cbox = $this->createElement('input');
    $cbox->setAttribute('type', 'checkbox');
    $cbox->setAttribute('name', $name);
    if (!is_null($id)) { $cbox->setAttribute('id', $id); }
    $cbox->setAttribute('value', $value);
    if ($checked) { $cbox->setAttribute('checked', ''); }
    return $cbox;
  }

  public function createElementInputFile($name, $id, $accept) {
    $fileinput = $this->createElement('input');
    $fileinput->setAttribute('type', 'file');
    $fileinput->setAttribute('name', $name);
    if (!is_null($id)) { $fileinput->setAttribute('id', $id); }
    $fileinput->setAttribute('accept', $accept);
    return $fileinput;
  }

  public function createElementInputSubmit($value) {
    $submitbtn = $this->createElement('input');
    $submitbtn->setAttribute('type', 'submit');
    $submitbtn->setAttribute('value', $value);
    return $submitbtn;
  }

  public function createElementButton($value, $onclick = null) {
    $btn = $this->createElement('input');
    $btn->setAttribute('type', 'button');
    $btn->setAttribute('value', $value);
    if (!is_null($onclick)) { $btn->setAttribute('onclick', $onclick); }
    return $btn;
  }

  public function createElementTextArea($name, $columns, $rows, $id = null, $value = null) {
    $txtarea = $this->createElement('textarea', $value);
    $txtarea->setAttribute('name', $name);
    $txtarea->setAttribute('cols', $columns);
    $txtarea->setAttribute('rows', $rows);
    if (!is_null($id)) { $txtarea->setAttribute('id', $id); }
    return $txtarea;
  }

  public function createElementSelect($name, $id = null, $options = array(), $default = null, $strictmatch = false) {
    $select = $this->createElement('select');
    $select->setAttribute('name', $name);
    if (!is_null($id)) { $select->setAttribute('id', $id); }
    foreach ($options as $key => $desc) {
      $select->appendElementOption($key, $desc, $strictmatch ? ($key === $default) : ($key == $default));
    }
    return $select;
  }

  public function createElementOption($key, $desc, $selected = false) {
    $option = $this->createElement('option', $desc);
    if ($key) {
      $option->setAttribute('value', $key);
    }
    if ($selected) { $option->setAttribute('selected', ''); }
    return $option;
  }

  public function createElementLabel($for_id, $value) {
    $label = $this->createElement('label', $value);
    $label->setAttribute('for', $for_id);
    return $label;
  }

  public function createElementDatalist($id = null, $options = array()) {
    $select = $this->createElement('datalist');
    if (!is_null($id)) { $select->setAttribute('id', $id); }
    foreach ($options as $key => $desc) {
      $select->appendElementOption($key, $desc);
    }
    return $select;
  }

  public function createElementStyle($styledata) {
    $style_elem = $this->createElement('style');
    // Note: type can/should be left out for HTML5.
    $style_elem->setAttribute('type', 'text/css');
    $style_elem->appendChild($this->createCDATASection($styledata));
    return $style_elem;
  }

  public function createElementJS($jsdata) {
    $jselem = $this->createElement('script');
    // Note: type can/should be left out for HTML5.
    $jselem->setAttribute('type', 'text/javascript');
    $jselem->appendChild($this->createCDATASection($jsdata));
    return $jselem;
  }

  public function createElementJSFile($jsURL, $defer = false, $async = false) {
    $jselem = $this->createElement('script');
    // Note: type can/should be left out for HTML5.
    $jselem->setAttribute('type', 'text/javascript');
    if ($defer) {
      $jselem->setAttribute('defer', '');
    }
    if ($async) {
      $jselem->setAttribute('async', '');
    }
    $jselem->setAttribute('src', $jsURL);
    return $jselem;
  }
}

class ExtendedElement extends DOMElement {
  // ExtendedElement PHP class
  // this extends the general PHP DOM Element class to simplify some usual constructs
  //
  // public function appendElement($name, [$value])
  //   appends a DOMDocument::createElement() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendElementXML($name, $xmldata)
  //   appends a DOMDocument::createElement() with the given name as a child of this element,
  //   with an ExtendedDocument::createXMLFragment() of the given XML data inside
  //     returns the new child
  //
  // public function appendLink($target, [$value], [$title])
  //   appends an ExtendedDocument::createElementLink() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendImage($src, [$alt_text])
  //   appends an ExtendedDocument::createElementImage() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendForm($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendFormDiv($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this element (see there for params)
  //     returns an HTML <div> that is a child of the new child
  //
  // public function appendInputHidden($name, $value)
  //   appends an ExtendedDocument::createElementInputHidden() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputText($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputText() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputPassword($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputPassword() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputNumber($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputNumber() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputRange($name, $id, $min, $max, [$step], [$value])
  //   appends an ExtendedDocument::createElementInputRange() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputSearch($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputSearch() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputUrl($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputUrl() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputEmail($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputEmail() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputTel($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputTel() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputDate($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputDate() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputTime($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputTime() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputColor($name, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputColor() as a child of this element (see there for params)
  //
  // public function appendInputRadio($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputRadio() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputCheckbox($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputCheckbox() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputFile($name, $id, $accept)
  //   appends an ExtendedDocument::createElementInputFile() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendInputSubmit($value)
  //   appends an ExtendedDocument::createElementInputSubmit() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendButton($value, $onclick = null)
  //   appends an ExtendedDocument::createElementButton() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendTextArea($name, $columns, $rows, [$id], [$value])
  //   appends an ExtendedDocument::createElementTextArea() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendElementSelect($name, [$id], [$options], [$default], [$strictmatch])
  //   appends an ExtendedDocument::createElementSelect() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendElementOption($key, $desc, [$selected])
  //   appends an ExtendedDocument::createElementOption() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendLabel($for_id, $value)
  //   appends an ExtendedDocument::createElementLabel() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendElementDatalist([$id], [$options])
  //   appends an ExtendedDocument::createElementDatalist() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendText($text)
  //   appends a DOMDocument::createTextNode() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendLinebreak()
  //   appends a <br> as a child of this element
  //     returns the new child
  //
  // public function appendEntity($name)
  //   appends a DOMDocument::createEntityReference() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendComment($comment_data)
  //   appends a DOMDocument::createComment() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendClonedElement($dom_element, [$deep])
  //   appends a clone of the given DOMElement as a child of this element
  //     the boolean $deep specifies if the children are cloned as well (defaults to TRUE)
  //     returns the new child
  //
  // public function appendHTMLMarkup($htmldata)
  //   appends a representation of the HTML data as children of this element
  //     NO return value!
  //
  // public function appendXMLMarkup($xmldata)
  //   appends a representation of the XML data as children of this element
  //     NO return value!
  //
  // public function appendStyleElement($styledata)
  //   appends an ExtendedDocument::createElementStyle() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendJSElement($jsdata)
  //   appends an ExtendedDocument::createElementJS() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendJSFile($jsURL, [$defer], [$async])
  //   appends an ExtendedDocument::createElementJSFile() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function setClass($classname)
  //   sets the 'class' attribute of the element to the given classname value
  //
  // public function addClass($classname)
  //   adds the given classname value to the space-separated list in the 'class' attribute
  //     returns the value of the 'class' attribute
  //
  // public function setID($elem_id)
  //   sets the 'id' attribute of the element to the given elem_id value

  public function appendElement($name, $value = '') {
    return $this->appendChild($this->ownerDocument->createElement($name, $value));
  }
  public function appendElementXML($name, $xmldata) {
    $aelem = $this->appendChild($this->ownerDocument->createElement($name));
    $aelem->appendXMLMarkup($xmldata);
    return $aelem;
  }
  public function appendLink($target, $value = '', $title = null) {
    return $this->appendChild($this->ownerDocument->createElementLink($target, $value, $title));
  }
  public function appendImage($src, $alt_text = '') {
    return $this->appendChild($this->ownerDocument->createElementImage($src, $alt_text));
  }
  public function appendForm($action, $method, $name, $id = null) {
    return $this->appendChild($this->ownerDocument->createElementForm($action, $method, $name, $id));
  }
  public function appendFormDiv($action, $method, $name, $id = null) {
    $formelem = $this->appendChild($this->ownerDocument->createElementForm($action, $method, $name, $id));
    return $formelem->appendElement('div');
  }
  public function appendInputHidden($name, $value) {
    return $this->appendChild($this->ownerDocument->createElementInputHidden($name, $value));
  }
  public function appendInputText($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputText($name, $maxlength, $size, $id, $value));
  }
  public function appendInputPassword($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputPassword($name, $maxlength, $size, $id, $value));
  }
  public function appendInputNumber($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputNumber($name, $maxlength, $size, $id, $value));
  }
  public function appendInputRange($name, $id, $min, $max, $step = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputRange($name, $id, $min, $max, $step, $value));
  }
  public function appendInputSearch($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputSearch($name, $maxlength, $size, $id, $value));
  }
  public function appendInputUrl($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputUrl($name, $maxlength, $size, $id, $value));
  }
  public function appendInputEmail($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputEmail($name, $maxlength, $size, $id, $value));
  }
  public function appendInputTel($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputTel($name, $maxlength, $size, $id, $value));
  }
  public function appendInputDate($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputDate($name, $id, $min, $max, $value));
  }
  public function appendInputTime($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputTime($name, $id, $min, $max, $value));
  }
  public function appendInputColor($name, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputColor($name, $id, $value));
  }
  public function appendInputRadio($name, $id, $value, $checked) {
    return $this->appendChild($this->ownerDocument->createElementInputRadio($name, $id, $value, $checked));
  }
  public function appendInputCheckbox($name, $id, $value, $checked) {
    return $this->appendChild($this->ownerDocument->createElementInputCheckbox($name, $id, $value, $checked));
  }
  public function appendInputFile($name, $id, $accept) {
    return $this->appendChild($this->ownerDocument->createElementInputFile($name, $id, $accept));
  }
  public function appendInputSubmit($value) {
    return $this->appendChild($this->ownerDocument->createElementInputSubmit($value));
  }
  public function appendButton($value, $onclick = null) {
    return $this->appendChild($this->ownerDocument->createElementButton($value, $onclick));
  }
  public function appendTextArea($name, $columns, $rows, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementTextArea($name, $columns, $rows, $id, $value));
  }
  public function appendElementSelect($name, $id = null, $options = array(), $default = null, $strictmatch = false) {
    return $this->appendChild($this->ownerDocument->createElementSelect($name, $id, $options, $default, $strictmatch));
  }
  public function appendElementOption($key, $desc, $selected = false) {
    return $this->appendChild($this->ownerDocument->createElementOption($key, $desc, $selected));
  }
  public function appendLabel($for_id, $value) {
    return $this->appendChild($this->ownerDocument->createElementLabel($for_id, $value));
  }
  public function appendElementDatalist($id = null, $options = array()) {
    return $this->appendChild($this->ownerDocument->createElementDatalist($id, $options));
  }
  public function appendText($text) {
    return $this->appendChild($this->ownerDocument->createTextNode($text ?? ''));
  }
  public function appendLinebreak() {
    return $this->appendChild($this->ownerDocument->createElement('br'));
  }
  public function appendEntity($name) {
    return $this->appendChild($this->ownerDocument->createEntityReference($name));
  }
  public function appendComment($comment_data) {
    return $this->appendChild($this->ownerDocument->createComment($comment_data));
  }
  public function appendClonedElement($dom_element, $deep = true) {
    return $this->appendChild($dom_element->cloneNode($deep));
  }
  public function appendHTMLMarkup($htmldata) {
    $this->ownerDocument->appendHTMLMarkup($htmldata, $this);
  }
  public function appendXMLMarkup($xmldata) {
    $this->ownerDocument->appendXMLMarkup($xmldata, $this);
  }
  public function appendStyleElement($styledata) {
    return $this->appendChild($this->ownerDocument->createElementStyle($styledata));
  }
  public function appendJSElement($jsdata) {
    return $this->appendChild($this->ownerDocument->createElementJS($jsdata));
  }
  public function appendJSFile($jsURL, $defer = false, $async = false) {
    return $this->appendChild($this->ownerDocument->createElementJSFile($jsURL, $defer, $async));
  }
  public function setClass($classname) {
    $this->setAttribute('class', $classname);
  }
  public function addClass($classname) {
    $classval = $this->getAttribute('class');
    if (strlen($classval)) { $classval .= ' '; }
    $classval .= $classname;
    $this->setClass($classval);
    return $classval;
  }
  public function setID($elem_id) {
    $this->setAttribute('id', $elem_id);
  }
}

class ExtendedDocumentFragment extends DOMDocumentFragment {
  // ExtendedDocumentFragment PHP class
  // this extends the general PHP DOM Document Fragment class to simplify some usual constructs
  //
  // public function appendElement($name, [$value])
  //   appends a DOMDocument::createElement() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendElementXML($name, $xmldata)
  //   appends a DOMDocument::createElement() with the given name as a child of this fragment,
  //   with an ExtendedDocument::createXMLFragment() of the given XML data inside
  //     returns the new child
  //
  // public function appendLink($target, [$value], [$title])
  //   appends an ExtendedDocument::createElementLink() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendImage($src, [$alt_text])
  //   appends an ExtendedDocument::createElementImage() as a child of this document (see there for params)
  //     returns the new child
  //
  // public function appendForm($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendFormDiv($action, $method, $name, [$id])
  //   appends an ExtendedDocument::createElementForm() as a child of this fragment (see there for params)
  //     returns an HTML <div> that is a child of the new child
  //
  // public function appendInputHidden($name, $value)
  //   appends an ExtendedDocument::createElementInputHidden() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputText($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputText() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputPassword($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputPassword() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputNumber($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputNumber() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputRange($name, $id, $min, $max, [$step], [$value])
  //   appends an ExtendedDocument::createElementInputRange() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputSearch($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputSearch() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputUrl($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputUrl() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputEmail($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputEmail() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputTel($name, $maxlength, $size, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputTel() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputDate($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputDate() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputTime($name, [$id], [$min], [$max], [$value])
  //   appends an ExtendedDocument::createElementInputTime() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputColor($name, [$id], [$value])
  //   appends an ExtendedDocument::createElementInputColor() as a child of this fragment (see there for params)
  //
  // public function appendInputRadio($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputRadio() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputCheckbox($name, $id, $value, $checked)
  //   appends an ExtendedDocument::createElementInputCheckbox() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputFile($name, $id, $accept)
  //   appends an ExtendedDocument::createElementInputFile() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendInputSubmit($value)
  //   appends an ExtendedDocument::createElementInputSubmit() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendButton($value, $onclick = null)
  //   appends an ExtendedDocument::createElementButton() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendTextArea($name, $columns, $rows, [$id], [$value])
  //   appends an ExtendedDocument::createElementTextArea() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendElementSelect($name, [$id], [$options], [$default], [$strictmatch])
  //   appends an ExtendedDocument::createElementSelect() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendElementOption($key, $desc, [$selected])
  //   appends an ExtendedDocument::createElementOption() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendLabel($for_id, $value)
  //   appends an ExtendedDocument::createElementLabel() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendElementDatalist([$id], [$options])
  //   appends an ExtendedDocument::createElementDatalist() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendText($text)
  //   appends a DOMDocument::createTextNode() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendLinebreak()
  //   appends a <br> as a child of this fragment
  //     returns the new child
  //
  // public function appendEntity($name)
  //   appends a DOMDocument::createEntityReference() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendComment($comment_data)
  //   appends a DOMDocument::createComment() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendClonedElement($dom_element, [$deep])
  //   appends a clone of the given DOMElement as a child of this fragment
  //     the boolean $deep specifies if the children are cloned as well (defaults to TRUE)
  //     returns the new child
  //
  // public function appendHTMLMarkup($htmldata)
  //   appends a representation of the HTML data as children of this fragment
  //     NO return value!
  //
  // public function appendXMLMarkup($xmldata)
  //   appends a representation of the XML data as children of this fragment
  //     NO return value!
  //
  // public function appendStyleElement($styledata)
  //   appends an ExtendedDocument::createElementStyle() as a child of this element (see there for params)
  //     returns the new child
  //
  // public function appendJSElement($jsdata)
  //   appends an ExtendedDocument::createElementJS() as a child of this fragment (see there for params)
  //     returns the new child
  //
  // public function appendJSFile($jsURL, [$defer], [$async])
  //   appends an ExtendedDocument::createElementJSFile() as a child of this fragment (see there for params)
  //     returns the new child

  public function appendElement($name, $value = '') {
    return $this->appendChild($this->ownerDocument->createElement($name, $value));
  }
  public function appendElementXML($name, $xmldata) {
    $aelem = $this->appendChild($this->ownerDocument->createElement($name));
    $aelem->appendXMLMarkup($xmldata);
    return $aelem;
  }
  public function appendLink($target, $value = '', $title = null) {
    return $this->appendChild($this->ownerDocument->createElementLink($target, $value, $title));
  }
  public function appendImage($src, $alt_text = '') {
    return $this->appendChild($this->ownerDocument->createElementImage($src, $alt_text));
  }
  public function appendForm($action, $method, $name, $id = null) {
    return $this->appendChild($this->ownerDocument->createElementForm($action, $method, $name, $id));
  }
  public function appendFormDiv($action, $method, $name, $id = null) {
    $formelem = $this->appendChild($this->ownerDocument->createElementForm($action, $method, $name, $id));
    return $formelem->appendElement('div');
  }
  public function appendInputHidden($name, $value) {
    return $this->appendChild($this->ownerDocument->createElementInputHidden($name, $value));
  }
  public function appendInputText($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputText($name, $maxlength, $size, $id, $value));
  }
  public function appendInputPassword($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputPassword($name, $maxlength, $size, $id, $value));
  }
  public function appendInputNumber($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputNumber($name, $maxlength, $size, $id, $value));
  }
  public function appendInputRange($name, $id, $min, $max, $step = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputRange($name, $id, $min, $max, $step, $value));
  }
  public function appendInputSearch($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputSearch($name, $maxlength, $size, $id, $value));
  }
  public function appendInputUrl($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputUrl($name, $maxlength, $size, $id, $value));
  }
  public function appendInputEmail($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputEmail($name, $maxlength, $size, $id, $value));
  }
  public function appendInputTel($name, $maxlength, $size, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputTel($name, $maxlength, $size, $id, $value));
  }
  public function appendInputDate($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputDate($name, $id, $min, $max, $value));
  }
  public function appendInputTime($name, $id = null, $min = null, $max = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputTime($name, $id, $min, $max, $value));
  }
  public function appendInputColor($name, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementInputColor($name, $id, $value));
  }
  public function appendInputRadio($name, $id, $value, $checked) {
    return $this->appendChild($this->ownerDocument->createElementInputRadio($name, $id, $value, $checked));
  }
  public function appendInputCheckbox($name, $id, $value, $checked) {
    return $this->appendChild($this->ownerDocument->createElementInputCheckbox($name, $id, $value, $checked));
  }
  public function appendInputFile($name, $id, $accept) {
    return $this->appendChild($this->ownerDocument->createElementInputFile($name, $id, $accept));
  }
  public function appendInputSubmit($value) {
    return $this->appendChild($this->ownerDocument->createElementInputSubmit($value));
  }
  public function appendButton($value, $onclick = null) {
    return $this->appendChild($this->ownerDocument->createElementButton($value, $onclick));
  }
  public function appendTextArea($name, $columns, $rows, $id = null, $value = null) {
    return $this->appendChild($this->ownerDocument->createElementTextArea($name, $columns, $rows, $id, $value));
  }
  public function appendElementSelect($name, $id = null, $options = array(), $default = null, $strictmatch = false) {
    return $this->appendChild($this->ownerDocument->createElementSelect($name, $id, $options, $default, $strictmatch));
  }
  public function appendElementOption($key, $desc, $selected = false) {
    return $this->appendChild($this->ownerDocument->createElementOption($key, $desc, $selected));
  }
  public function appendLabel($for_id, $value) {
    return $this->appendChild($this->ownerDocument->createElementLabel($for_id, $value));
  }
  public function appendElementDatalist($id = null, $options = array()) {
    return $this->appendChild($this->ownerDocument->createElementDatalist($id, $options));
  }
  public function appendText($text) {
    return $this->appendChild($this->ownerDocument->createTextNode($text));
  }
  public function appendLinebreak() {
    return $this->appendChild($this->ownerDocument->createElement('br'));
  }
  public function appendEntity($name) {
    return $this->appendChild($this->ownerDocument->createEntityReference($name));
  }
  public function appendComment($comment_data) {
    return $this->appendChild($this->ownerDocument->createComment($comment_data));
  }
  public function appendClonedElement($dom_element, $deep = true) {
    return $this->appendChild($dom_element->cloneNode($deep));
  }
  public function appendHTMLMarkup($htmldata) {
    $this->ownerDocument->appendHTMLMarkup($htmldata, $this);
  }
  public function appendXMLMarkup($xmldata) {
    $this->ownerDocument->appendXMLMarkup($xmldata, $this);
  }
  public function appendStyleElement($styledata) {
    return $this->appendChild($this->ownerDocument->createElementStyle($styledata));
  }
  public function appendJSElement($jsdata) {
    return $this->appendChild($this->ownerDocument->createElementJS($jsdata));
  }
  public function appendJSFile($jsURL, $defer = false, $async = false) {
    return $this->appendChild($this->ownerDocument->createElementJSFile($jsURL, $defer, $async));
  }
}
?>