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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin\Network
*/
/**
* Implements a network settings API for the plugin's multisite settings.
*/
class Yoast_Network_Settings_API {
/**
* Registered network settings.
*
* @var array
*/
private $registered_settings = [];
/**
* Options whitelist, keyed by option group.
*
* @var array
*/
private $whitelist_options = [];
/**
* The singleton instance of this class.
*
* @var Yoast_Network_Settings_API|null
*/
private static $instance = null;
/**
* Registers a network setting and its data.
*
* @param string $option_group The group the network option is part of.
* @param string $option_name The name of the network option to sanitize and save.
* @param array $args {
* Optional. Data used to describe the network setting when registered.
*
* @type callable $sanitize_callback A callback function that sanitizes the network option's value.
* @type mixed $default Default value when calling `get_network_option()`.
* }
*
* @return void
*/
public function register_setting( $option_group, $option_name, $args = [] ) {
$defaults = [
'group' => $option_group,
'sanitize_callback' => null,
];
$args = wp_parse_args( $args, $defaults );
if ( ! isset( $this->whitelist_options[ $option_group ] ) ) {
$this->whitelist_options[ $option_group ] = [];
}
$this->whitelist_options[ $option_group ][] = $option_name;
if ( ! empty( $args['sanitize_callback'] ) ) {
add_filter( "sanitize_option_{$option_name}", [ $this, 'filter_sanitize_option' ], 10, 2 );
}
if ( array_key_exists( 'default', $args ) ) {
add_filter( "default_site_option_{$option_name}", [ $this, 'filter_default_option' ], 10, 2 );
}
$this->registered_settings[ $option_name ] = $args;
}
/**
* Gets the registered settings and their data.
*
* @return array Array of $option_name => $data pairs.
*/
public function get_registered_settings() {
return $this->registered_settings;
}
/**
* Gets the whitelisted options for a given option group.
*
* @param string $option_group Option group.
*
* @return array List of option names, or empty array if unknown option group.
*/
public function get_whitelist_options( $option_group ) {
if ( ! isset( $this->whitelist_options[ $option_group ] ) ) {
return [];
}
return $this->whitelist_options[ $option_group ];
}
/**
* Filters sanitization for a network option value.
*
* This method is added as a filter to `sanitize_option_{$option}` for network options that are
* registered with a sanitize callback.
*
* @param string $value The sanitized option value.
* @param string $option The option name.
*
* @return string The filtered sanitized option value.
*/
public function filter_sanitize_option( $value, $option ) {
if ( empty( $this->registered_settings[ $option ] ) ) {
return $value;
}
return call_user_func( $this->registered_settings[ $option ]['sanitize_callback'], $value );
}
/**
* Filters the default value for a network option.
*
* This function is added as a filter to `default_site_option_{$option}` for network options that
* are registered with a default.
*
* @param mixed $default_value Existing default value to return.
* @param string $option The option name.
*
* @return mixed The filtered default value.
*/
public function filter_default_option( $default_value, $option ) {
// If a default value was manually passed to the function, allow it to override.
if ( $default_value !== false ) {
return $default_value;
}
if ( empty( $this->registered_settings[ $option ] ) ) {
return $default_value;
}
return $this->registered_settings[ $option ]['default'];
}
/**
* Checks whether the requirements to use this class are met.
*
* @return bool True if requirements are met, false otherwise.
*/
public function meets_requirements() {
return is_multisite();
}
/**
* Gets the singleton instance of this class.
*
* @return Yoast_Network_Settings_API The singleton instance.
*/
public static function get() {
if ( self::$instance === null ) {
self::$instance = new self();
}
return self::$instance;
}
}