/**
* Registers a CSS file.
* @param string $url the CSS file to be registered.
* @param array $options the HTML attributes for the link tag. Please refer to [[Html::cssFile()]] for
* the supported options. The following options are specially handled and are not treated as HTML attributes:
*
* - `depends`: array, specifies the names of the asset bundles that this CSS file depends on.
*
* @param string $key the key that identifies the CSS script file. If null, it will use
* $url as the key. If two CSS files are registered with the same key, the latter
* will overwrite the former.
*/
public function registerCssFile($url, $options = [], $key = null)
{
$url = Leaps::getAlias($url);
$key = $key ?: $url;
$depends = ArrayHelper::remove($options, 'depends', []);
if (empty($depends)) {
$this->cssFiles[$key] = Html::cssFile($url, $options);
} else {
$this->getAssetManager()->bundles[$key] = new AssetBundle(['baseUrl' => '', 'css' => [strncmp($url, '//', 2) === 0 ? $url : ltrim($url, '/')], 'cssOptions' => $options, 'depends' => (array) $depends]);
$this->registerAssetBundle($key);
}
}
