function ThemeExtensionList::getInstalledExtensionNames

Overrides ExtensionList::getInstalledExtensionNames

File

core/lib/Drupal/Core/Extension/ThemeExtensionList.php, line 305

Class

ThemeExtensionList

Provides a list of available themes.

Namespace

Code

protected function getInstalledExtensionNames() {
    // Cache the installed themes to avoid multiple calls to the config system.
    if (!isset($this->installedThemes)) {
        $this->installedThemes = $this->configFactory
            ->get('core.extension')
            ->get('theme') ?: [];
    }
    return array_keys($this->installedThemes);
}