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<?php
/**
* Special cases for overriding modules.
*
* @package automattic/jetpack
*/
/**
* Provides methods for dealing with module overrides.
*
* @since 5.9.0
*/
class Jetpack_Modules_Overrides {
/**
* Used to cache module overrides so that we minimize how many times we apply the
* option_jetpack_active_modules filter.
*
* @var null|array
*/
private $overrides = null;
/**
* Clears the $overrides member used for caching.
*
* Since get_overrides() can be passed a falsey value to skip caching, this is probably
* most useful for clearing cache between tests.
*
* @return void
*/
public function clear_cache() {
$this->overrides = null;
}
/**
* Returns true if there is a filter on the jetpack_active_modules option.
*
* @return bool Whether there is a filter on the jetpack_active_modules option.
*/
public function do_overrides_exist() {
return (bool) ( has_filter( 'option_jetpack_active_modules' ) || has_filter( 'jetpack_active_modules' ) );
}
/**
* Gets the override for a given module.
*
* @param string $module_slug The module's slug.
* @param boolean $use_cache Whether or not cached overrides should be used.
*
* @return bool|string False if no override for module. 'active' or 'inactive' if there is an override.
*/
public function get_module_override( $module_slug, $use_cache = true ) {
$overrides = $this->get_overrides( $use_cache );
if ( ! isset( $overrides[ $module_slug ] ) ) {
return false;
}
return $overrides[ $module_slug ];
}
/**
* Returns an array of module overrides where the key is the module slug and the value
* is true if the module is forced on and false if the module is forced off.
*
* @param bool $use_cache Whether or not cached overrides should be used.
*
* @return array The array of module overrides.
*/
public function get_overrides( $use_cache = true ) {
if ( $use_cache && ! is_null( $this->overrides ) ) {
return $this->overrides;
}
if ( ! $this->do_overrides_exist() ) {
return array();
}
$available_modules = Jetpack::get_available_modules();
/**
* First, let's get all modules that have been forced on.
*/
/** This filter is documented in wp-includes/option.php */
$filtered = apply_filters( 'option_jetpack_active_modules', array() );
/** This filter is documented in class.jetpack.php */
$filtered = apply_filters( 'jetpack_active_modules', $filtered );
$forced_on = array_diff( $filtered, array() );
/**
* Second, let's get all modules forced off.
*/
/** This filter is documented in wp-includes/option.php */
$filtered = apply_filters( 'option_jetpack_active_modules', $available_modules );
/** This filter is documented in class.jetpack.php */
$filtered = apply_filters( 'jetpack_active_modules', $filtered );
$forced_off = array_diff( $available_modules, $filtered );
/**
* Last, build the return value.
*/
$return_value = array();
foreach ( $forced_on as $on ) {
$return_value[ $on ] = 'active';
}
foreach ( $forced_off as $off ) {
$return_value[ $off ] = 'inactive';
}
$this->overrides = $return_value;
return $return_value;
}
/**
* A reference to an instance of this class.
*
* @var Jetpack_Modules_Overrides
*/
private static $instance = null;
/**
* Returns the singleton instance of Jetpack_Modules_Overrides
*
* @return Jetpack_Modules_Overrides
*/
public static function instance() {
if ( is_null( self::$instance ) ) {
self::$instance = new Jetpack_Modules_Overrides();
}
return self::$instance;
}
/**
* Private construct to enforce singleton.
*/
private function __construct() {
}
}
Jetpack_Modules_Overrides::instance();
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