/**
* Get the list of categories leading to this course.
*
* This function is used by {@link navbar::get_items()} to add back the "courses"
* node and category chain leading to the current course. Note that this is only ever
* called for the current course, so we don't need to bother taking in any parameters.
*
* @return array
*/
private function get_course_categories()
{
global $CFG;
require_once $CFG->dirroot . '/course/lib.php';
require_once $CFG->libdir . '/coursecatlib.php';
$categories = array();
$cap = 'moodle/category:viewhiddencategories';
$showcategories = coursecat::count_all() > 1;
if ($showcategories) {
foreach ($this->page->categories as $category) {
if (!$category->visible && !has_capability($cap, get_category_or_system_context($category->parent))) {
continue;
}
$url = new moodle_url('/course/index.php', array('categoryid' => $category->id));
$name = format_string($category->name, true, array('context' => context_coursecat::instance($category->id)));
$categorynode = breadcrumb_navigation_node::create($name, $url, self::TYPE_CATEGORY, null, $category->id);
if (!$category->visible) {
$categorynode->hidden = true;
}
$categories[] = $categorynode;
}
}
// Don't show the 'course' node if enrolled in this course.
if (!is_enrolled(context_course::instance($this->page->course->id, null, '', true))) {
$courses = $this->page->navigation->get('courses');
if (!$courses) {
// Courses node may not be present.
$courses = breadcrumb_navigation_node::create(get_string('courses'), new moodle_url('/course/index.php'), self::TYPE_CONTAINER);
}
$categories[] = $courses;
}
return $categories;
}
/**
* Renders a breadcrumb navigation node object.
*
* @param breadcrumb_navigation_node $item The navigation node to render.
* @return string HTML fragment
*/
protected function render_breadcrumb_navigation_node(breadcrumb_navigation_node $item)
{
if ($item->action instanceof moodle_url) {
$content = $item->get_content();
$title = $item->get_title();
$attributes = array();
$attributes['itemprop'] = 'url';
if ($title !== '') {
$attributes['title'] = $title;
}
if ($item->hidden) {
$attributes['class'] = 'dimmed_text';
}
$content = html_writer::tag('span', $content, array('itemprop' => 'title'));
$content = html_writer::link($item->action, $content, $attributes);
$attributes = array();
$attributes['itemscope'] = '';
$attributes['itemtype'] = 'http://data-vocabulary.org/Breadcrumb';
$content = html_writer::tag('span', $content, $attributes);
} else {
$content = $this->render_navigation_node($item);
}
return $content;
}
