Upload Evidence

            return 'default';
        }
    }
 
    /**
     * Returns HTML for filepicker form element.
     *
     * @return string
     */
    function toHtml() {
        global $CFG, $COURSE, $USER, $PAGE, $OUTPUT;
        $id     = $this->_attributes['id'];
        $elname = $this->_attributes['name'];
 
        if ($this->_flagFrozen) {
            return $this->getFrozenHtml();
        }
        if (!$draftitemid = (int)$this->getValue()) {
            // no existing area info provided - let's use fresh new draft area
            $draftitemid = file_get_unused_draft_itemid();
            $this->setValue($draftitemid);
        }
 
        if ($COURSE->id == SITEID) {
            $context = context_system::instance();
        } else {
            $context = context_course::instance($COURSE->id);
        }
 
        $client_id = uniqid();
 
        $args = new stdClass();
        // need these three to filter repositories list
        $args->accepted_types = $this->_options['accepted_types']?$this->_options['accepted_types']:'*';
        $args->return_types = $this->_options['return_types'];
        $args->itemid = $draftitemid;
        $args->maxbytes = $this->_options['maxbytes'];
        $args->context = $PAGE->context;
        $args->buttonname = $elname.'choose';
        $args->elementid = $id;

    function renderElement(&$element, $required, $error)
    {
        // if the element name indicates the end of a fieldset, close the fieldset
        if (   in_array($element->getName(), $this->_stopFieldsetElements)
            && $this->_fieldsetsOpen > 0
           ) {
            $this->_html .= $this->_closeFieldsetTemplate;
            $this->_fieldsetsOpen--;
        }
        // if no fieldset was opened, we need to open a hidden one here to get
        // XHTML validity
        if ($this->_fieldsetsOpen === 0) {
            $this->_html .= $this->_openHiddenFieldsetTemplate;
            $this->_fieldsetsOpen++;
        }
        if (!$this->_inGroup) {
            $html = $this->_prepareTemplate($element->getName(), $element->getLabel(), $required, $error);
            // the following lines (until the "elseif") were changed / added
            // compared to the default renderer
            $element_html = $element->toHtml();
            if (!is_null($element->getAttribute('id'))) {
                $id = $element->getAttribute('id');
            } else {
                $id = $element->getName();
            }
            if (!empty($id) and !is_a($element, 'MoodleQuickForm_group') and !is_a($element, 'HTML_QuickForm_static')) { // moodle hack
                $html = str_replace('<label', '<label for="' . $id . '"', $html);
                $element_html = preg_replace('#name="' . $id . '#',
                                             'id="' . $id . '" name="' . $id . '',
                                             $element_html,
                                             1);
            }
            $this->_html .= str_replace('{element}', $element_html, $html);
        } elseif (!empty($this->_groupElementTemplate)) {
            $html = str_replace('{label}', $element->getLabel(), $this->_groupElementTemplate);
            if ($required) {
                $html = str_replace('<!-- BEGIN required -->', '', $html);
                $html = str_replace('<!-- END required -->', '', $html);
            } else {
                $html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN required -->(\s|\S)*<!-- END required -->([ \t\n\r]*)?/i", '', $html);

            }
        } else {
            if ($this->_inGroup) {
                $this->_groupElementTemplate = $html;
            }
        }
        if (($this->_inGroup) and !empty($this->_groupElementTemplate)) {
            $this->_groupElementTemplate = $html;
        } else if (!isset($this->_templates[$element->getName()])) {
            $this->_templates[$element->getName()] = $html;
        }
 
        // Check if the element should be displayed in the sticky footer.
        if ($element->getName() && ($this->_stickyfooterelement == $element->getName())) {
            $stickyfooter = new core\output\sticky_footer($html);
            $html = $OUTPUT->render($stickyfooter);
        }
 
        if (!$fromtemplate) {
            parent::renderElement($element, $required, $error);
        } else {
            if (in_array($element->getName(), $this->_stopFieldsetElements) && $this->_fieldsetsOpen > 0) {
                $this->_html .= $this->_closeFieldsetTemplate;
                $this->_fieldsetsOpen--;
            }
            $this->_html .= $html;
        }
    }
 
    /**
     * Called when visiting a form, after processing all form elements
     * Adds required note, form attributes, validation javascript and form content.
     *
     * @global moodle_page $PAGE
     * @param MoodleQuickForm $form Passed by reference
     */
    function finishForm(&$form){
        global $PAGE;
        if ($form->isFrozen()){
            $this->_hiddenHtml = '';

                $this->setValue($arg);
        }
        return true;
    } // end func onQuickFormEvent
 
    // }}}
    // {{{ accept()
 
   /**
    * Accepts a renderer
    *
    * @param object     An HTML_QuickForm_Renderer object
    * @param bool       Whether an element is required
    * @param string     An error message associated with an element
    * @access public
    * @return void 
    */
    function accept(&$renderer, $required=false, $error=null)
    {
        $renderer->renderElement($this, $required, $error);
    } // end func accept
 
    // }}}
    // {{{ _generateId()
 
   /**
    * Automatically generates and assigns an 'id' attribute for the element.
    * 
    * Currently used to ensure that labels work on radio buttons and
    * checkboxes. Per idea of Alexander Radivanovich.
    *
    * @access private
    * @return void 
    */
    function _generateId() {
        if ($this->getAttribute('id')) {
            return;
        }
 
        $id = $this->getName() ?? '';

    // }}}
    // {{{ accept()
 
   /**
    * Accepts a renderer
    *
    * @param object     An HTML_QuickForm_Renderer object
    * @since 3.0
    * @access public
    * @return void
    */
    function accept(&$renderer)
    {
        $renderer->startForm($this);
        foreach (array_keys($this->_elements) as $key) {
            $element =& $this->_elements[$key];
            $elementName = $element->getName();
            $required    = ($this->isElementRequired($elementName) && !$element->isFrozen());
            $error       = $this->getElementError($elementName);
            $element->accept($renderer, $required, $error);
        }
        $renderer->finishForm($this);
    } // end func accept
 
    // }}}
    // {{{ defaultRenderer()
 
   /**
    * Returns a reference to default renderer object
    *
    * @access public
    * @since 3.0
    * @return object a default renderer object
    */
    function &defaultRenderer()
    {
        if (!isset($GLOBALS['_HTML_QuickForm_default_renderer'])) {
            include_once('HTML/QuickForm/Renderer/Default.php');
            $GLOBALS['_HTML_QuickForm_default_renderer'] = new HTML_QuickForm_Renderer_Default(); //Moodle: PHP 5.3 compatibility
        }

                    }
                } else if ($anyrequiredorerror && (empty($headername) || $this->is_shown($headername))) {
                    // If any error or required field are present within the header, we need to expand it.
                    $this->setExpanded($headername, true, true);
                } else if (!isset($this->_collapsibleElements[$headername])) {
                    // Define element as collapsed by default.
                    $this->setExpanded($headername, false);
                }
            }
 
            // Pass the array to renderer object.
            $renderer->setCollapsibleElements($this->_collapsibleElements);
        }
 
        $this->accept_set_nonvisible_elements($renderer);
 
        if (method_exists($renderer, 'set_sticky_footer') && !empty($this->_stickyfooterelement)) {
            $renderer->set_sticky_footer($this->_stickyfooterelement);
        }
        parent::accept($renderer);
    }
 
    /**
     * Checking non-visible elements to set when accepting a renderer.
     * @param HTML_QuickForm_Renderer $renderer
     */
    private function accept_set_nonvisible_elements($renderer) {
        if (!method_exists($renderer, 'set_nonvisible_elements') || $this->_disableShortforms) {
            return;
        }
        $nonvisibles = [];
        foreach (array_keys($this->_elements) as $index) {
            $element =& $this->_elements[$index];
            if ($element->getType() != 'header') {
                continue;
            }
            $headername = $element->getName();
            if (!$this->is_shown($headername)) {
                $nonvisibles[] = $headername;
            }

    // }}}
    // {{{ toHtml ()
 
    /**
     * Returns an HTML version of the form
     *
     * @param string $in_data (optional) Any extra data to insert right
     *               before form is rendered.  Useful when using templates.
     *
     * @return   string     Html version of the form
     * @since     1.0
     * @access   public
     */
    function toHtml ($in_data = null)
    {
        if (!is_null($in_data)) {
            $this->addElement('html', $in_data);
        }
        $renderer =& $this->defaultRenderer();
        $this->accept($renderer);
        return $renderer->toHtml();
    } // end func toHtml
 
    // }}}
    // {{{ getValidationScript()
 
    /**
     * Returns the client side validation script
     *
     * @since     2.0
     * @access    public
     * @return    string    Javascript to perform validation, empty string if no 'client' rules were added
     */
    function getValidationScript()
    {
        if (empty($this->_rules) || empty($this->_attributes['onsubmit'])) {
            return '';
        }
 
        include_once('HTML/QuickForm/RuleRegistry.php');

    /**
     * Abstract method.  Must be extended to return the objects HTML
     *
     * @access    public
     * @return    string
     * @abstract
     */
    function toHtml()
    {
        return '';
    } // end func toHtml
 
    /**
     * Displays the HTML to the screen
     *
     * @access    public
     */
    function display()
    {
        print $this->toHtml();
    } // end func display
 
} // end class HTML_Common
?>
 

            return $file->get_content();
 
        } else if (isset($_FILES[$elname])) {
            return file_get_contents($_FILES[$elname]['tmp_name']);
        }
 
        return false;
    }
 
    /**
     * Print html form.
     */
    function display() {
        //finalize the form definition if not yet done
        if (!$this->_definition_finalized) {
            $this->_definition_finalized = true;
            $this->definition_after_data();
        }
 
        $this->_form->display();
    }
 
    /**
     * Renders the html form (same as display, but returns the result).
     *
     * Note that you can only output this rendered result once per page, as
     * it contains IDs which must be unique.
     *
     * @return string HTML code for the form
     */
    public function render() {
        ob_start();
        $this->display();
        $out = ob_get_contents();
        ob_end_clean();
        return $out;
    }
 
    /**
     * Form definition. Abstract method - always override!

                foreach ($errors as $error) {
                    echo html_writer::tag('li', $error);
                }
                echo html_writer::end_tag('ul');
                echo html_writer::end_div();
            }
 
            if ($success > 0) {
                echo html_writer::div(
                    html_writer::link(new moodle_url('/local/ipemcpd/index.php'),
                        get_string('viewevidence', 'local_ipemcpd'),
                        ['class' => 'btn btn-primary']),
                    'mt-3'
                );
            }
        }
    }
}
 
$form->display();
 
echo $OUTPUT->footer();