/**
  * Convert data attribute to a string
  *
  * @param \core_renderer $output
  * @return string
  */
 protected function data_to_string(\core_renderer $output)
 {
     if ($this->data instanceof \Exception) {
         $info = get_exception_info($this->data);
         return $output->fatal_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo);
     } else {
         return json_encode($this->data);
     }
 }

 /**
  * Initialise with the bits of JavaScript that every Moodle page should have.
  *
  * @param moodle_page $page
  * @param core_renderer $output
  */
 protected function init_requirements_data(moodle_page $page, core_renderer $renderer)
 {
     global $CFG;
     // JavaScript should always work with $CFG->httpswwwroot rather than $CFG->wwwroot.
     // Otherwise, in some situations, users will get warnings about insecure content
     // on secure pages from their web browser.
     $this->M_cfg = array('wwwroot' => $CFG->httpswwwroot, 'sesskey' => sesskey(), 'loadingicon' => $renderer->pix_url('i/loading_small', 'moodle')->out(false), 'themerev' => theme_get_revision(), 'theme' => $page->theme->name, 'jsrev' => (empty($CFG->cachejs) or empty($CFG->jsrev)) ? -1 : $CFG->jsrev);
     if (debugging('', DEBUG_DEVELOPER)) {
         $this->M_cfg['developerdebug'] = true;
         $this->yui2_lib('logger');
     }
     // accessibility stuff
     $this->skip_link_to('maincontent', get_string('tocontent', 'access'));
     // to be removed soon
     $this->yui2_lib('dom');
     // at least javascript-static.js needs to be migrated to YUI3
     $this->string_for_js('confirmation', 'admin');
     $this->string_for_js('cancel', 'moodle');
     $this->string_for_js('yes', 'moodle');
     if ($page->pagelayout === 'frametop') {
         $this->js_init_call('M.util.init_frametop');
     }
 }

 /**
  * Initialise with the bits of JavaScript that every Moodle page should have.
  *
  * @param moodle_page $page
  * @param core_renderer $renderer
  */
 protected function init_requirements_data(moodle_page $page, core_renderer $renderer)
 {
     global $CFG;
     // JavaScript should always work with $CFG->httpswwwroot rather than $CFG->wwwroot.
     // Otherwise, in some situations, users will get warnings about insecure content
     // on secure pages from their web browser.
     $this->M_cfg = array('wwwroot' => $CFG->httpswwwroot, 'sesskey' => sesskey(), 'loadingicon' => $renderer->pix_url('i/loading_small', 'moodle')->out(false), 'themerev' => theme_get_revision(), 'slasharguments' => (int) (!empty($CFG->slasharguments)), 'theme' => $page->theme->name, 'jsrev' => (empty($CFG->cachejs) or empty($CFG->jsrev)) ? -1 : $CFG->jsrev);
     if (debugging('', DEBUG_DEVELOPER)) {
         $this->M_cfg['developerdebug'] = true;
     }
     // Accessibility stuff.
     $this->skip_link_to('maincontent', get_string('tocontent', 'access'));
     // Add strings used on many pages.
     $this->string_for_js('confirmation', 'admin');
     $this->string_for_js('cancel', 'moodle');
     $this->string_for_js('yes', 'moodle');
     // Alter links in top frame to break out of frames.
     if ($page->pagelayout === 'frametop') {
         $this->js_init_call('M.util.init_frametop');
     }
 }

 public function user_menu($user = null, $withlinks = null)
 {
     $output = '';
     $messageurl = new moodle_url('/message/index.php');
     $output .= '<a href="#" class="nav-icon nav-icon"><i class="fa fa-globe"></i></a>';
     $output .= '<a href="' . $messageurl->out() . '" class="nav-icon nav-icon"><i class="fa fa-envelope"></i></a>';
     $output .= core_renderer::user_menu($user, $withlinks);
     return $output;
 }

 /**
  * Initialise with the bits of JavaScript that every Moodle page should have.
  *
  * @param moodle_page $page
  * @param core_renderer $renderer
  */
 protected function init_requirements_data(moodle_page $page, core_renderer $renderer)
 {
     global $CFG;
     // JavaScript should always work with $CFG->httpswwwroot rather than $CFG->wwwroot.
     // Otherwise, in some situations, users will get warnings about insecure content
     // on secure pages from their web browser.
     $this->M_cfg = array('wwwroot' => $CFG->httpswwwroot, 'sesskey' => sesskey(), 'loadingicon' => $renderer->pix_url('i/loading_small', 'moodle')->out(false), 'themerev' => theme_get_revision(), 'slasharguments' => (int) (!empty($CFG->slasharguments)), 'theme' => $page->theme->name, 'jsrev' => (empty($CFG->cachejs) or empty($CFG->jsrev)) ? -1 : $CFG->jsrev, 'svgicons' => $page->theme->use_svg_icons());
     if (debugging('', DEBUG_DEVELOPER)) {
         $this->M_cfg['developerdebug'] = true;
     }
     if (defined('BEHAT_SITE_RUNNING')) {
         $this->M_cfg['behatsiterunning'] = true;
     }
     // Accessibility stuff.
     $this->skip_link_to('maincontent', get_string('tocontent', 'access'));
     // Add strings used on many pages.
     $this->string_for_js('confirmation', 'admin');
     $this->string_for_js('cancel', 'moodle');
     $this->string_for_js('yes', 'moodle');
     // Alter links in top frame to break out of frames.
     if ($page->pagelayout === 'frametop') {
         $this->js_init_call('M.util.init_frametop');
     }
     // Include block drag/drop if editing is on
     if ($page->user_is_editing()) {
         $params = array('courseid' => $page->course->id, 'pagetype' => $page->pagetype, 'pagelayout' => $page->pagelayout, 'subpage' => $page->subpage, 'regions' => $page->blocks->get_regions(), 'contextid' => $page->context->id);
         if (!empty($page->cm->id)) {
             $params['cmid'] = $page->cm->id;
         }
         $page->requires->yui_module('moodle-core-blocks', 'M.core_blocks.init_dragdrop', array($params), null, true);
     }
 }

 /**
  * Make the formatted HTML ouput.
  *
  * Also adds the required javascript call to the page output.
  *
  * @param core_renderer $output
  * @return string HTML
  */
 protected function formatted_contents($output)
 {
     // based of code in admin_tree
     global $PAGE;
     // TODO change this when there is a proper way for blocks to get stuff into head.
     static $eventattached;
     if ($eventattached === null) {
         $eventattached = true;
     }
     if (!$this->content) {
         $this->content = new stdClass();
         $this->content->items = array();
     }
     $this->get_required_javascript();
     $this->get_content();
     $content = $output->tree_block_contents($this->content->items, array('class' => 'block_tree list'));
     if (isset($this->id) && !is_numeric($this->id)) {
         $content = $output->box($content, 'block_tree_box', $this->id);
     }
     return $content;
 }

 /**
  * Gets the direction icon for the sortable field within this table
  *
  * @param core_renderer $output
  * @param string $field
  * @return string
  */
 protected function get_direction_icon($output, $field)
 {
     $direction = self::DEFAULTSORTDIRECTION;
     if ($this->sort == $field) {
         $direction = $this->sortdirection;
     }
     if ($direction === 'ASC') {
         return html_writer::empty_tag('img', array('alt' => '', 'src' => $output->pix_url('t/down')));
     } else {
         return html_writer::empty_tag('img', array('alt' => '', 'src' => $output->pix_url('t/up')));
     }
 }

/**
 *  Sharing Cart - Bulk Delete Operation
 *  
 *  @author  VERSION2, Inc.
 *  @version $Id: bulkdelete.php 942 2013-03-28 10:42:54Z malu $
 */
require_once '../../config.php';
require_once __DIR__ . '/classes/storage.php';
require_once __DIR__ . '/classes/record.php';
require_once __DIR__ . '/classes/renderer.php';
if (false) {
    $DB = new mysqli_native_moodle_database();
    $CFG = new stdClass();
    $USER = new stdClass();
    $PAGE = new moodle_page();
    $OUTPUT = new core_renderer();
}
$courseid = required_param('course', PARAM_INT);
$returnurl = new moodle_url('/course/view.php', array('id' => $courseid));
require_login($courseid);
$delete_param = function_exists('optional_param_array') ? optional_param_array('delete', null, PARAM_RAW) : optional_param('delete', null, PARAM_RAW);
if (is_array($delete_param)) {
    try {
        set_time_limit(0);
        $delete_ids = array_map('intval', array_keys($delete_param));
        list($sql, $params) = $DB->get_in_or_equal($delete_ids);
        $records = $DB->get_records_select(sharing_cart\record::TABLE, "userid = {$USER->id} AND id {$sql}", $params);
        if (!$records) {
            throw new sharing_cart\exception('recordnotfound');
        }
        $storage = new sharing_cart\storage();

 /**
  * The standard tags that should be included in the <head> tag
  * including a meta description for the front page
  *
  * @return string HTML fragment.
  */
 public function standard_head_html()
 {
     global $SITE, $PAGE;
     $output = parent::standard_head_html();
     if ($PAGE->pagelayout == 'frontpage') {
         $summary = s(strip_tags(format_text($SITE->summary, FORMAT_HTML)));
         if (!empty($summary)) {
             $output .= "<meta name=\"description\" content=\"{$summary}\" />\n";
         }
     }
     return $output;
 }

 /**
  * Renders a custom menu node as part of a submenu
  *
  * The custom menu this method override the render_custom_menu_item function
  * in outputrenderers.php
  *
  * @see render_custom_menu()
  *
  * @staticvar int $submenucount
  * @param custom_menu_item $menunode
  * @return string
  */
 protected function render_custom_menu_item(custom_menu_item $menunode)
 {
     if (!right_to_left()) {
         // Keep YUI3 navmenu for LTR UI
         parent::render_custom_menu_item($menunode);
     }
     // Required to ensure we get unique trackable id's
     static $submenucount = 0;
     $content = html_writer::start_tag('li');
     if ($menunode->has_children()) {
         // If the child has menus render it as a sub menu
         $submenucount++;
         if ($menunode->get_url() !== null) {
             $url = $menunode->get_url();
         } else {
             $url = '#cm_submenu_' . $submenucount;
         }
         $content .= html_writer::start_tag('span', array('class' => 'customitem'));
         $content .= html_writer::link($url, $menunode->get_text(), array('title' => $menunode->get_title()));
         $content .= html_writer::end_tag('span');
         $content .= html_writer::start_tag('ul');
         foreach ($menunode->get_children() as $menunode) {
             $content .= $this->render_custom_menu_item($menunode);
         }
         $content .= html_writer::end_tag('ul');
     } else {
         // The node doesn't have children so produce a final menuitem
         if ($menunode->get_url() !== null) {
             $url = $menunode->get_url();
         } else {
             $url = '#';
         }
         $content .= html_writer::link($url, $menunode->get_text(), array('title' => $menunode->get_title()));
     }
     $content .= html_writer::end_tag('li');
     // Return the sub menu
     return $content;
 }

 /**
  * Initialises the renderer instance.
  * @param moodle_page $page
  * @param string $target
  * @throws coding_exception
  */
 public function __construct(moodle_page $page, $target) {
     if ($target !== RENDERER_TARGET_MAINTENANCE || $page->pagelayout !== 'maintenance') {
         throw new coding_exception('Invalid request for the maintenance renderer.');
     }
     parent::__construct($page, $target);
 }

 protected function render_pix_icon(pix_icon $icon)
 {
     if (self::replace_moodle_icon($icon->pix) !== false && @$icon->attributes['alt'] === '' && @$icon->attributes['title'] === '') {
         return self::replace_moodle_icon($icon->pix);
     } else {
         return parent::render_pix_icon($icon);
     }
 }

 /**
  * Renders a navigation node
  *
  * This function has been overridden to remove tabindexs
  *
  * @param navigation_node $item
  * @return string
  */
 protected function render_navigation_node(navigation_node $item) {
     // Generate the content normally
     $content = parent::render_navigation_node($item);
     // Strip out any tabindex's
     $content = str_replace(' tabindex="0"', '', $content);
     $content = str_replace(' tabindex=\'0\'', '', $content);
     // Return the cleaned content
     return $content;
 }

 public function box($contents, $classes = 'generalbox', $id = null, $attributes = array()) {
     if (isset($attributes['data-rel']) && $attributes['data-rel'] === 'fatalerror') {
         return html_writer::div($contents, 'alert alert-danger', $attributes);
     }
     return parent::box($contents, $classes, $id, $attributes);
 }

 /**
  * Returns the URL for the favicon.
  *
  * @return string The favicon URL
  */
 public function favicon() {
     if (!empty($this->page->theme->settings->favicon)) {
         return $this->page->theme->setting_file_url('favicon', 'favicon');
     }
     return parent::favicon();
 }

 public function render_pix_icon(pix_icon $icon)
 {
     if (self::replace_moodle_icon($icon->pix)) {
         $newicon = self::replace_moodle_icon($icon->pix, $icon->attributes['alt']) . parent::render_pix_icon($icon) . "</i>";
         return $newicon;
     } else {
         return parent::render_pix_icon($icon);
     }
 }

 protected function render_custom_menu_item(custom_menu_item $menunode)
 {
     $transmutedmenunode = new theme_archaius_transmuted_custom_menu_item($menunode);
     return parent::render_custom_menu_item($transmutedmenunode);
 }

 public function standard_footer_html()
 {
     $output = parent::standard_footer_html();
     $output .= html_writer::start_tag('div', array('class' => 'themecredit')) . get_string('credit', 'theme_essential') . html_writer::link('//about.me/gjbarnard', 'Gareth J Barnard', array('target' => '_blank')) . html_writer::end_tag('div');
     return $output;
 }

 protected function render_pix_icon(pix_icon $icon)
 {
     if (bootstrap::replace_moodle_icon($icon->pix) !== false) {
         return bootstrap::replace_moodle_icon($icon->pix);
     } else {
         return parent::render_pix_icon($icon);
     }
 }