function NavigationRenderer::getContentTop

Gets the content for content_top section.

Return value

array The content_top section content.

File

core/modules/navigation/src/NavigationRenderer.php, line 187

Class

NavigationRenderer

Handle rendering for different pieces of the navigation.

Namespace

Code

protected function getContentTop() : array {
    $content_top = [
        '#theme' => 'navigation_content_top',
    ];
    $content_top_items = $this->moduleHandler
        ->invokeAll('navigation_content_top');
    $this->moduleHandler
        ->alter('navigation_content_top', $content_top_items);
    uasort($content_top_items, [
        SortArray::class,
        'sortByWeightElement',
    ]);
    // Filter out empty items, taking care to merge any cacheability metadata.
    $cacheability = new CacheableMetadata();
    $content_top_items = array_filter($content_top_items, function ($item) use (&$cacheability) {
        if (Element::isEmpty($item)) {
            $cacheability = $cacheability->merge(CacheableMetadata::createFromRenderArray($item));
            return FALSE;
        }
        return TRUE;
    });
    $cacheability->applyTo($content_top);
    $content_top['#items'] = $content_top_items;
    return $content_top;
}