public function navbar()
 {
     global $CFG;
     $items = $this->page->navbar->get_items();
     /* Added for subadmin */
     $context = get_context_instance(CONTEXT_SYSTEM);
     $roles = get_user_roles($context, $USER->id, false);
     $role = key($roles);
     $rolename = $roles[$role]->shortname;
     $htmlblocks = array();
     // Iterate the navarray and display each node
     $itemcount = count($items);
     $separator = get_separator();
     for ($i = 0; $i < $itemcount; $i++) {
         $item = $items[$i];
         $item->hideicon = true;
         if ($i === 0) {
             if ($rolename == 'subadmin') {
                 $item->action = new moodle_url($CFG->wwwroot . '/my/');
             }
             $content = html_writer::tag('li', $this->render($item));
         } else {
             $content = html_writer::tag('li', $separator . $this->render($item));
         }
         $htmlblocks[] = $content;
     }
     //accessibility: heading for navbar list  (MDL-20446)
     $navbarcontent = html_writer::tag('span', get_string('pagepath'), array('class' => 'accesshide'));
     $navbarcontent .= html_writer::tag('ul', join('', $htmlblocks), array('role' => 'navigation'));
     // XHTML
     return $navbarcontent;
 }

 /**
  * Constructor.
  *
  * @param bool $showpasses Whether this reporter should output anything for passes.
  */
 function __construct($showpasses)
 {
     parent::__construct('UTF-8');
     $this->showpasses = $showpasses;
     $this->strrunonlyfolder = $this->get_string('runonlyfolder');
     $this->strrunonlyfile = $this->get_string('runonlyfile');
     $this->strseparator = get_separator();
 }

 /**
  * Constructor.
  *
  * @param bool $showpasses Whether this reporter should output anything for passes.
  */
 function ExHtmlReporter($showpasses)
 {
     $this->HtmlReporter();
     $this->showpasses = $showpasses;
     $this->strrunonlyfolder = $this->get_string('runonlyfolder');
     $this->strrunonlyfile = $this->get_string('runonlyfile');
     $this->strseparator = get_separator();
 }

 public function navbar()
 {
     $items = $this->page->navbar->get_items();
     $breadcrumbs = array();
     foreach ($items as $item) {
         $item->hideicon = true;
         $breadcrumbs[] = $this->render($item);
     }
     $divider = '<span class="divider">' . get_separator() . '</span>';
     $list_items = '<li>' . join(" {$divider}</li><li>", $breadcrumbs) . '</li>';
     $title = '<span class="accesshide">' . get_string('pagepath') . '</span>';
     return $title . "<ul class=\"breadcrumb\">{$list_items}</ul>";
 }

 /**
  * Renderers a progress bar for the backup or restore given the items that
  * make it up.
  * @param array $items An array of items
  * @return string
  */
 public function progress_bar(array $items) {
     foreach ($items as &$item) {
         $text = $item['text'];
         unset($item['text']);
         if (array_key_exists('link', $item)) {
             $link = $item['link'];
             unset($item['link']);
             $item = html_writer::link($link, $text, $item);
         } else {
             $item = html_writer::tag('span', $text, $item);
         }
     }
     return html_writer::tag('div', join(get_separator(), $items), array('class'=>'backup_progress clearfix'));
 }

 public function navbar()
 {
     $items = $this->page->navbar->get_items();
     if (empty($items)) {
         return '';
     }
     $breadcrumbs = array();
     foreach ($items as $item) {
         $item->hideicon = true;
         $breadcrumbs[] = $this->render($item);
     }
     $divider = '<span class="divider">' . get_separator() . '</span>';
     $list_items = '<li>' . join(" {$divider}</li><li>", $breadcrumbs) . '</li>';
     $title = '<span class="accesshide" id="navbar-label">' . get_string('pagepath') . '</span>';
     return $title . '<nav aria-labelledby="navbar-label"><ul class="breadcrumb">' . $list_items . '</ul></nav>';
 }

    /**
     * Return the navbar content so that it can be echoed out by the layout
     *
     * @return string XHTML navbar
     */
    public function navbar() {
        $items = $this->page->navbar->get_items();
        $itemcount = count($items);
        if ($itemcount === 0) {
            return '';
        }

        $htmlblocks = array();
        // Iterate the navarray and display each node
        $separator = get_separator();
        for ($i=0;$i < $itemcount;$i++) {
            $item = $items[$i];
            $item->hideicon = true;
            if ($i===0) {
                $content = html_writer::tag('li', $this->render($item));
            } else {
                $content = html_writer::tag('li', $separator.$this->render($item));
            }
            $htmlblocks[] = $content;
        }

        //accessibility: heading for navbar list  (MDL-20446)
        $navbarcontent = html_writer::tag('span', get_string('pagepath'), array('class'=>'accesshide'));
        $navbarcontent .= html_writer::tag('nav', html_writer::tag('ul', join('', $htmlblocks)));
        // XHTML
        return $navbarcontent;
    }

//.........这里部分代码省略.........
 *
 * @param mixed $extranavlinks - Normally an array of arrays, keys: name, link, type. If you
 *      only want one extra item with no link, you can pass a string instead. If you don't want
 *      any extra links, pass an empty string.
 * @param mixed $cm - optionally the $cm object, if you want this function to generate the
 *      activity and activityinstance levels of navigation too.
 *
 * @return $navigation as an object so it can be differentiated from old style
 *      navigation strings.
 */
function build_navigation($extranavlinks, $cm = null)
{
    global $CFG, $COURSE, $DB, $SITE;
    if (is_string($extranavlinks)) {
        if ($extranavlinks == '') {
            $extranavlinks = array();
        } else {
            $extranavlinks = array(array('name' => $extranavlinks, 'link' => '', 'type' => 'title'));
        }
    }
    $navlinks = array();
    //Site name
    if (!empty($SITE->shortname)) {
        $navlinks[] = array('name' => format_string($SITE->shortname), 'link' => "{$CFG->wwwroot}/", 'type' => 'home');
    }
    // Course name, if appropriate.
    if (isset($COURSE) && $COURSE->id != SITEID) {
        $navlinks[] = array('name' => format_string($COURSE->shortname), 'link' => "{$CFG->wwwroot}/course/view.php?id={$COURSE->id}", 'type' => 'course');
    }
    // Activity type and instance, if appropriate.
    if (is_object($cm)) {
        if (!isset($cm->modname)) {
            debugging('The field $cm->modname should be set if you call build_navigation with ' . 'a $cm parameter. If you get $cm using get_coursemodule_from_instance or ' . 'get_coursemodule_from_id, this will be done automatically.', DEBUG_DEVELOPER);
            if (!($cm->modname = $DB->get_field('modules', 'name', array('id' => $cm->module)))) {
                print_error('cannotmoduletype');
            }
        }
        if (!isset($cm->name)) {
            debugging('The field $cm->name should be set if you call build_navigation with ' . 'a $cm parameter. If you get $cm using get_coursemodule_from_instance or ' . 'get_coursemodule_from_id, this will be done automatically.', DEBUG_DEVELOPER);
            if (!($cm->name = $DB->get_field($cm->modname, 'name', array('id' => $cm->instance)))) {
                print_error('cannotmodulename');
            }
        }
        $navlinks[] = array('name' => get_string('modulenameplural', $cm->modname), 'link' => $CFG->wwwroot . '/mod/' . $cm->modname . '/index.php?id=' . $cm->course, 'type' => 'activity');
        $navlinks[] = array('name' => format_string($cm->name), 'link' => $CFG->wwwroot . '/mod/' . $cm->modname . '/view.php?id=' . $cm->id, 'type' => 'activityinstance');
    }
    //Merge in extra navigation links
    $navlinks = array_merge($navlinks, $extranavlinks);
    // Work out whether we should be showing the activity (e.g. Forums) link.
    // Note: build_navigation() is called from many places --
    // install & upgrade for example -- where we cannot count on the
    // roles infrastructure to be defined. Hence the $CFG->rolesactive check.
    if (!isset($CFG->hideactivitytypenavlink)) {
        $CFG->hideactivitytypenavlink = 0;
    }
    if ($CFG->hideactivitytypenavlink == 2) {
        $hideactivitylink = true;
    } else {
        if ($CFG->hideactivitytypenavlink == 1 && $CFG->rolesactive && !empty($COURSE->id) && $COURSE->id != SITEID) {
            if (!isset($COURSE->context)) {
                $COURSE->context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
            }
            $hideactivitylink = !has_capability('moodle/course:manageactivities', $COURSE->context);
        } else {
            $hideactivitylink = false;
        }
    }
    //Construct an unordered list from $navlinks
    //Accessibility: heading hidden from visual browsers by default.
    $navigation = get_accesshide(get_string('youarehere', 'access'), 'h2') . " <ul>\n";
    $lastindex = count($navlinks) - 1;
    $i = -1;
    // Used to count the times, so we know when we get to the last item.
    $first = true;
    foreach ($navlinks as $navlink) {
        $i++;
        $last = $i == $lastindex;
        if (!is_array($navlink)) {
            continue;
        }
        if (!empty($navlink['type']) && $navlink['type'] == 'activity' && !$last && $hideactivitylink) {
            continue;
        }
        $navigation .= '<li class="first">';
        if (!$first) {
            $navigation .= get_separator();
        }
        if (!empty($navlink['link']) && !$last) {
            $navigation .= "<a onclick=\"this.target='{$CFG->framename}'\" href=\"{$navlink['link']}\">";
        }
        $navigation .= "{$navlink['name']}";
        if (!empty($navlink['link']) && !$last) {
            $navigation .= "</a>";
        }
        $navigation .= "</li>";
        $first = false;
    }
    $navigation .= "</ul>";
    return array('newnav' => true, 'navlinks' => $navigation);
}

/**
 * Prints breadcrumb trail of links, called in theme/-/header.html
 *
 * @uses $CFG
 * @param mixed $navigation The breadcrumb navigation string to be printed
 * @param string $separator The breadcrumb trail separator. The default 0 leads to the use
 *  of $THEME->rarrow, themes could use '→', '/', or '' for a style-sheet solution.
 * @param boolean $return False to echo the breadcrumb string (default), true to return it.
 */
function print_navigation($navigation, $separator = 0, $return = false)
{
    global $CFG, $THEME;
    $output = '';
    if (0 === $separator) {
        $separator = get_separator();
    } else {
        $separator = '<span class="sep">' . $separator . '</span>';
    }
    if ($navigation) {
        if (!is_array($navigation)) {
            $ar = explode('->', $navigation);
            $navigation = array();
            foreach ($ar as $a) {
                if (strpos($a, '</a>') === false) {
                    $navigation[] = array('title' => $a, 'url' => '');
                } else {
                    if (preg_match('/<a.*href="([^"]*)">(.*)<\\/a>/', $a, $matches)) {
                        $navigation[] = array('title' => $matches[2], 'url' => $matches[1]);
                    }
                }
            }
        }
        if (!($site = get_site())) {
            $site = new object();
            $site->shortname = get_string('home');
        }
        //Accessibility: breadcrumb links now in a list, &raquo; replaced with a 'silent' character.
        $output .= get_accesshide(get_string('youarehere', 'access'), 'h2') . "<ul>\n";
        $output .= '<li class="first">' . "\n" . '<a ' . $CFG->frametarget . ' onclick="this.target=\'' . $CFG->framename . '\'" href="' . $CFG->wwwroot . (!has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM)) && !empty($USER->id) && !empty($CFG->mymoodleredirect) && !isguest() ? '/my' : '') . '/">' . format_string($site->shortname) . "</a>\n</li>\n";
        foreach ($navigation as $navitem) {
            $title = trim(strip_tags(format_string($navitem['title'], false)));
            $url = $navitem['url'];
            if (empty($url)) {
                $output .= '<li class="first">' . "{$separator} {$title}</li>\n";
            } else {
                $output .= '<li class="first">' . "{$separator}\n<a " . $CFG->frametarget . ' onclick="this.target=\'' . $CFG->framename . '\'" href="' . $url . '">' . "{$title}</a>\n</li>\n";
            }
        }
        $output .= "</ul>\n";
    }
    if ($return) {
        return $output;
    } else {
        echo $output;
    }
}

/**
 * This function will build the navigation string to be used by print_header
 * and others
 * @uses $CFG
 * @uses $THEME
 * @param $extranavlinks - array of associative arrays, keys: name, link, type
 * @return $navigation as an object so it can be differentiated from old style
 * navigation strings.
 */
function build_navigation($extranavlinks)
{
    global $CFG, $COURSE;
    $navigation = '';
    $navlinks = array();
    //Site name
    if ($site = get_site()) {
        $navlinks[] = array('name' => format_string($site->shortname), 'link' => "{$CFG->wwwroot}/", 'type' => 'home');
    }
    if ($COURSE) {
        if ($COURSE->id != SITEID) {
            //Course
            $navlinks[] = array('name' => format_string($COURSE->shortname), 'link' => "{$CFG->wwwroot}/course/view.php?id={$COURSE->id}", 'type' => 'course');
        }
    }
    //Merge in extra navigation links
    $navlinks = array_merge($navlinks, $extranavlinks);
    //Construct an unordered list from $navlinks
    //Accessibility: heading hidden from visual browsers by default.
    $navigation = '<h2 class="accesshide">' . get_string('youarehere', 'access') . "</h2> <ul>\n";
    $countlinks = count($navlinks);
    $i = 0;
    foreach ($navlinks as $navlink) {
        if ($i >= $countlinks || !is_array($navlink)) {
            continue;
        }
        // Check the link type to see if this link should appear in the trail
        //
        // NOTE: we should move capchecks _out_ to the callers. build_navigation() is
        // called from many places -- install & upgrade for example -- where we cannot
        // count on the roles infrastructure to be defined.
        //
        $cap = 0;
        if (!empty($COURSE->id) && $COURSE->id != SITEID) {
            if (!isset($COURSE->context)) {
                $COURSE->context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
            }
            $cap = has_capability('moodle/course:manageactivities', $COURSE->context);
        }
        $hidetype_is2 = isset($CFG->hideactivitytypenavlink) && $CFG->hideactivitytypenavlink == 2;
        $hidetype_is1 = isset($CFG->hideactivitytypenavlink) && $CFG->hideactivitytypenavlink == 1;
        if ($navlink['type'] == 'activity' && $i + 1 < $countlinks && ($hidetype_is2 || $hidetype_is1 && !$cap)) {
            continue;
        }
        $navigation .= '<li class="first">';
        if ($i > 0) {
            $navigation .= get_separator();
        }
        if (!empty($navlink['link']) && $i + 1 < $countlinks) {
            $navigation .= "<a onclick=\"this.target='{$CFG->framename}'\" href=\"{$navlink['link']}\">";
        }
        $navigation .= "{$navlink['name']}";
        if (!empty($navlink['link']) && $i + 1 < $countlinks) {
            $navigation .= "</a>";
        }
        $navigation .= "</li>";
        $i++;
    }
    $navigation .= "</ul>";
    return array('newnav' => true, 'navlinks' => $navigation);
}

 public function navbar()
 {
     $items = $this->page->navbar->get_items();
     $breadcrumbs = array();
     foreach ($items as $item) {
         $item->hideicon = true;
         /* 
          * Trying to replace the 'My home' breadcrumb
          * not very elegant; another solution may be considered later
          */
         $ismyhome = strcasecmp($item->text, get_string('myhome')) == 0;
         if ($ismyhome) {
             $breadcrumbs[] = '<a href="/" id="moo-home-button">&nbsp;<i class="fa fa-home fa-lg"></i></a>';
             continue;
             // go to next element
         }
         /**/
         $a = $this->render($item);
         if (strpos($a, "/course/view.php") !== false) {
             $breadcrumbs[] = html_writer::div($a, 'coursetitle');
         } else {
             $breadcrumbs[] = $a;
         }
     }
     // ADD ELLIPSES ...
     $new_breadcrumbs = array();
     $counter = 0;
     foreach ($breadcrumbs as $breadcrumb) {
         //add ellipses in second position
         if ($counter == 1) {
             $new_breadcrumbs[] = "<span id='ellipses'>...</span>";
         }
         $new_breadcrumbs[] = $breadcrumb;
         $counter++;
     }
     //
     $divider = '<span class="divider">' . get_separator() . '</span>';
     $list_items = '<li>' . join(" {$divider}</li><li>", $new_breadcrumbs) . '</li>';
     $title = '<span class="accesshide">' . get_string('pagepath') . '</span>';
     return $title . "<ul id=\"bc1\" class=\"breadcrumb\">{$list_items}</ul>";
 }