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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin\Notifications
* @since 1.5.3
*/
/**
* Implements individual notification.
*/
class Yoast_Notification {
/**
* Type of capability check.
*
* @var string
*/
public const MATCH_ALL = 'all';
/**
* Type of capability check.
*
* @var string
*/
public const MATCH_ANY = 'any';
/**
* Notification type.
*
* @var string
*/
public const ERROR = 'error';
/**
* Notification type.
*
* @var string
*/
public const WARNING = 'warning';
/**
* Notification type.
*
* @var string
*/
public const UPDATED = 'updated';
/**
* Options of this Notification.
*
* Contains optional arguments:
*
* - type: The notification type, i.e. 'updated' or 'error'
* - id: The ID of the notification
* - nonce: Security nonce to use in case of dismissible notice.
* - priority: From 0 to 1, determines the order of Notifications.
* - dismissal_key: Option name to save dismissal information in, ID will be used if not supplied.
* - capabilities: Capabilities that a user must have for this Notification to show.
* - capability_check: How to check capability pass: all or any.
* - wpseo_page_only: Only display on wpseo page or on every page.
* - yoast_branding: Whether to show the Yoast SEO branding in the notification.
* - resolve_nonce: Security nonce to use in case of resolving the notification.
*
* @var array
*/
private $options = [];
/**
* Contains default values for the optional arguments.
*
* @var array
*/
private $defaults = [
'type' => self::UPDATED,
'id' => '',
'user_id' => null,
'nonce' => null,
'priority' => 0.5,
'data_json' => [],
'dismissal_key' => null,
'capabilities' => [],
'capability_check' => self::MATCH_ALL,
'yoast_branding' => false,
'resolve_nonce' => '',
];
/**
* The message for the notification.
*
* @var string
*/
private $message;
/**
* Notification class constructor.
*
* @param string $message Message string.
* @param array $options Set of options.
*/
public function __construct( $message, $options = [] ) {
$this->message = $message;
$this->options = $this->normalize_options( $options );
}
/**
* Retrieve notification ID string.
*
* @return string
*/
public function get_id() {
return $this->options['id'];
}
/**
* Retrieve the user to show the notification for.
*
* @deprecated 21.6
* @codeCoverageIgnore
*
* @return WP_User|null The user to show this notification for.
*/
public function get_user() {
_deprecated_function( __METHOD__, 'Yoast SEO 21.6' );
return null;
}
/**
* Retrieve the id of the user to show the notification for.
*
* Returns the id of the current user if not user has been sent.
*
* @return int The user id
*/
public function get_user_id() {
return ( $this->options['user_id'] ?? get_current_user_id() );
}
/**
* Retrieve nonce identifier.
*
* @return string|null Nonce for this Notification.
*/
public function get_nonce() {
if ( $this->options['id'] && empty( $this->options['nonce'] ) ) {
$this->options['nonce'] = wp_create_nonce( $this->options['id'] );
}
return $this->options['nonce'];
}
/**
* Make sure the nonce is up to date.
*
* @return void
*/
public function refresh_nonce() {
if ( $this->options['id'] ) {
$this->options['nonce'] = wp_create_nonce( $this->options['id'] );
}
}
/**
* Get the type of the notification.
*
* @return string
*/
public function get_type() {
return $this->options['type'];
}
/**
* Priority of the notification.
*
* Relative to the type.
*
* @return float Returns the priority between 0 and 1.
*/
public function get_priority() {
return $this->options['priority'];
}
/**
* Get the nonce to resolve the alert.
*
* @return string
*/
public function get_resolve_nonce() {
return $this->options['resolve_nonce'];
}
/**
* Get the User Meta key to check for dismissal of notification.
*
* @return string User Meta Option key that registers dismissal.
*/
public function get_dismissal_key() {
if ( empty( $this->options['dismissal_key'] ) ) {
return $this->options['id'];
}
return $this->options['dismissal_key'];
}
/**
* Is this Notification persistent.
*
* @return bool True if persistent, False if fire and forget.
*/
public function is_persistent() {
$id = $this->get_id();
return ! empty( $id );
}
/**
* Check if the notification is relevant for the current user.
*
* @return bool True if a user needs to see this notification, false if not.
*/
public function display_for_current_user() {
// If the notification is for the current page only, always show.
if ( ! $this->is_persistent() ) {
return true;
}
// If the current user doesn't match capabilities.
return $this->match_capabilities();
}
/**
* Does the current user match required capabilities.
*
* @return bool
*/
public function match_capabilities() {
// Super Admin can do anything.
if ( is_multisite() && is_super_admin( $this->options['user_id'] ) ) {
return true;
}
/**
* Filter capabilities that enable the displaying of this notification.
*
* @param array $capabilities The capabilities that must be present for this notification.
* @param Yoast_Notification $notification The notification object.
*
* @return array Array of capabilities or empty for no restrictions.
*
* @since 3.2
*/
$capabilities = apply_filters( 'wpseo_notification_capabilities', $this->options['capabilities'], $this );
// Should be an array.
if ( ! is_array( $capabilities ) ) {
$capabilities = (array) $capabilities;
}
/**
* Filter capability check to enable all or any capabilities.
*
* @param string $capability_check The type of check that will be used to determine if an capability is present.
* @param Yoast_Notification $notification The notification object.
*
* @return string self::MATCH_ALL or self::MATCH_ANY.
*
* @since 3.2
*/
$capability_check = apply_filters( 'wpseo_notification_capability_check', $this->options['capability_check'], $this );
if ( ! in_array( $capability_check, [ self::MATCH_ALL, self::MATCH_ANY ], true ) ) {
$capability_check = self::MATCH_ALL;
}
if ( ! empty( $capabilities ) ) {
$has_capabilities = array_filter( $capabilities, [ $this, 'has_capability' ] );
switch ( $capability_check ) {
case self::MATCH_ALL:
return $has_capabilities === $capabilities;
case self::MATCH_ANY:
return ! empty( $has_capabilities );
}
}
return true;
}
/**
* Array filter function to find matched capabilities.
*
* @param string $capability Capability to test.
*
* @return bool
*/
private function has_capability( $capability ) {
$user_id = $this->options['user_id'];
if ( ! is_numeric( $user_id ) ) {
return false;
}
$user = get_user_by( 'id', $user_id );
if ( ! $user ) {
return false;
}
return $user->has_cap( $capability );
}
/**
* Return the object properties as an array.
*
* @return array
*/
public function to_array() {
return [
'message' => $this->message,
'options' => $this->options,
];
}
/**
* Adds string (view) behaviour to the notification.
*
* @return string
*/
public function __toString() {
return $this->render();
}
/**
* Renders the notification as a string.
*
* @return string The rendered notification.
*/
public function render() {
$attributes = [];
// Default notification classes.
$classes = [
'yoast-notification',
];
// Maintain WordPress visualisation of notifications when they are not persistent.
if ( ! $this->is_persistent() ) {
$classes[] = 'notice';
$classes[] = $this->get_type();
}
if ( ! empty( $classes ) ) {
$attributes['class'] = implode( ' ', $classes );
}
// Combined attribute key and value into a string.
array_walk( $attributes, [ $this, 'parse_attributes' ] );
$message = null;
if ( $this->options['yoast_branding'] ) {
$message = $this->wrap_yoast_seo_icon( $this->message );
}
$message ??= wpautop( $this->message );
// Build the output DIV.
return '<div ' . implode( ' ', $attributes ) . '>' . $message . '</div>' . PHP_EOL;
}
/**
* Get the message for the notification.
*
* @return string The message.
*/
public function get_message() {
return wpautop( $this->message );
}
/**
* Wraps the message with a Yoast SEO icon.
*
* @param string $message The message to wrap.
*
* @return string The wrapped message.
*/
private function wrap_yoast_seo_icon( $message ) {
$out = sprintf(
'<img src="%1$s" height="%2$d" width="%3$d" class="yoast-seo-icon" />',
esc_url( plugin_dir_url( WPSEO_FILE ) . 'packages/js/images/Yoast_SEO_Icon.svg' ),
60,
60,
);
$out .= '<div class="yoast-seo-icon-wrap">';
$out .= $message;
$out .= '</div>';
return $out;
}
/**
* Get the JSON if provided.
*
* @return string|false
*/
public function get_json() {
if ( empty( $this->options['data_json'] ) ) {
return '';
}
return WPSEO_Utils::format_json_encode( $this->options['data_json'] );
}
/**
* Make sure we only have values that we can work with.
*
* @param array $options Options to normalize.
*
* @return array
*/
private function normalize_options( $options ) {
$options = wp_parse_args( $options, $this->defaults );
// Should not exceed 0 or 1.
$options['priority'] = min( 1, max( 0, $options['priority'] ) );
// Set default capabilities when not supplied.
if ( empty( $options['capabilities'] ) || $options['capabilities'] === [] ) {
$options['capabilities'] = [ 'wpseo_manage_options' ];
}
// Set to the id of the current user if not supplied.
$options['user_id'] ??= get_current_user_id();
return $options;
}
/**
* Format HTML element attributes.
*
* @param string $value Attribute value.
* @param string $key Attribute name.
*
* @return void
*/
private function parse_attributes( &$value, $key ) {
$value = sprintf( '%s="%s"', sanitize_key( $key ), esc_attr( $value ) );
}
}