function BreakpointManager::getGroups

Overrides BreakpointManagerInterface::getGroups

File

core/modules/breakpoint/src/BreakpointManager.php, line 181

Class

BreakpointManager

Defines a breakpoint plugin manager to deal with breakpoints.

Namespace

Code

public function getGroups() {
    // Use a double colon so as to not clash with the cache for each group.
    if ($cache = $this->cacheBackend
        ->get($this->cacheKey . '::groups')) {
        $groups = $cache->data;
    }
    else {
        $groups = [];
        foreach ($this->getDefinitions() as $plugin_definition) {
            if (!isset($groups[$plugin_definition['group']])) {
                $groups[$plugin_definition['group']] = $plugin_definition['group'];
            }
        }
        $this->cacheBackend
            ->set($this->cacheKey . '::groups', $groups, Cache::PERMANENT, [
            'breakpoints',
        ]);
    }
    // Get the labels. This is not cacheable due to translation.
    $group_labels = [];
    foreach ($groups as $group) {
        $group_labels[$group] = $this->getGroupLabel($group);
    }
    asort($group_labels);
    return $group_labels;
}