private function isThemeCacheValid()
{
if (!$this->cacheFile->exists()) {
return false;
}
$themeDir = $this->app['filesystem.themes']->getDir($this->get('general/theme'));
// Check the timestamp for the theme's configuration file
$timestampTheme = 0;
$themeFile = $themeDir->getFile('theme.yml');
if ($themeFile->exists()) {
$timestampTheme = $themeFile->getTimestamp();
} elseif (($themeFile = $themeDir->getFile('config.yml')) && $themeFile->exists()) {
/** @deprecated Deprecated since 3.0, to be removed in 4.0. (config.yml was the old filename) */
$timestampTheme = $themeFile->getTimestamp();
}
return $this->cacheFile->getTimestamp() > $timestampTheme;
}