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<?php
/**
* Astra Notices
*
* An easy to use PHP Library to add dismissible admin notices in the WordPress admin.
*
* @package Astra Notices
* @since 1.0.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
if ( ! class_exists( 'Astra_Notices' ) ) :
/**
* Astra_Notices
*
* @since 1.0.0
*/
class Astra_Notices {
/**
* Notices
*
* @access private
* @var array Notices.
* @since 1.0.0
*/
private static $version = '1.1.8';
/**
* Notices
*
* @access private
* @var array Notices.
* @since 1.0.0
*/
private static $notices = array();
/**
* Instance
*
* @access private
* @var object Class object.
* @since 1.0.0
*/
private static $instance;
/**
* Initiator
*
* @since 1.0.0
* @return object initialized object of class.
*/
public static function get_instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Constructor
*
* @since 1.0.0
*/
public function __construct() {
add_action( 'admin_notices', array( $this, 'show_notices' ), 30 );
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
add_action( 'wp_ajax_astra-notice-dismiss', array( $this, 'dismiss_notice' ) );
add_filter( 'wp_kses_allowed_html', array( $this, 'add_data_attributes' ), 10, 2 );
}
/**
* Filters and Returns a list of allowed tags and attributes for a given context.
*
* @param array $allowedposttags array of allowed tags.
* @param string $context Context type (explicit).
* @since 1.0.0
* @return array
*/
public function add_data_attributes( $allowedposttags, $context ) {
$allowedposttags['a']['data-repeat-notice-after'] = true;
return $allowedposttags;
}
/**
* Add Notice.
*
* @since 1.0.0
* @param array $args Notice arguments.
* @return void
*/
public static function add_notice( $args = array() ) {
self::$notices[] = $args;
}
/**
* Dismiss Notice.
*
* @since 1.0.0
* @return void
*/
public function dismiss_notice() {
$notice_id = ( isset( $_POST['notice_id'] ) ) ? sanitize_key( $_POST['notice_id'] ) : '';
$repeat_notice_after = ( isset( $_POST['repeat_notice_after'] ) ) ? absint( $_POST['repeat_notice_after'] ) : '';
$nonce = ( isset( $_POST['nonce'] ) ) ? sanitize_key( $_POST['nonce'] ) : '';
$notice = $this->get_notice_by_id( $notice_id );
$capability = isset( $notice['capability'] ) ? $notice['capability'] : 'manage_options';
if ( ! apply_filters( 'astra_notices_user_cap_check', current_user_can( $capability ) ) ) {
return;
}
if ( false === wp_verify_nonce( $nonce, 'astra-notices' ) ) {
wp_send_json_error( esc_html_e( 'WordPress Nonce not validated.', 'astra' ) );
}
// Valid inputs?
if ( ! empty( $notice_id ) ) {
if ( ! empty( $repeat_notice_after ) ) {
set_transient( $notice_id, true, $repeat_notice_after );
} else {
update_user_meta( get_current_user_id(), $notice_id, 'notice-dismissed' );
}
wp_send_json_success();
}
wp_send_json_error();
}
/**
* Enqueue Scripts.
*
* @since 1.0.0
* @return void
*/
public function enqueue_scripts() {
wp_register_script( 'astra-notices', self::get_url() . 'notices.js', array( 'jquery' ), self::$version, true );
wp_localize_script(
'astra-notices',
'astraNotices',
array(
'_notice_nonce' => wp_create_nonce( 'astra-notices' ),
)
);
}
/**
* Sort the notices based on the given priority of the notice.
* This function is called from usort()
*
* @since 1.5.2
* @param array $notice_1 First notice.
* @param array $notice_2 Second Notice.
* @return array
*/
public function sort_notices( $notice_1, $notice_2 ) {
if ( ! isset( $notice_1['priority'] ) ) {
$notice_1['priority'] = 10;
}
if ( ! isset( $notice_2['priority'] ) ) {
$notice_2['priority'] = 10;
}
return $notice_1['priority'] - $notice_2['priority'];
}
/**
* Get all registered notices.
* Since v1.1.8 it is recommended to register the notices on
*
* @return array|null
*/
private function get_notices() {
usort( self::$notices, array( $this, 'sort_notices' ) );
return self::$notices;
}
/**
* Get notice by notice_id
*
* @param string $notice_id Notice id.
*
* @return array notice based on the notice id.
*/
private function get_notice_by_id( $notice_id ) {
if ( empty( $notice_id ) ) {
return array();
}
$notices = $this->get_notices();
$notice = wp_list_filter(
$notices,
array(
'id' => $notice_id,
)
);
return ! empty( $notice ) ? $notice[0] : array();
}
/**
* Display the notices in the WordPress admin.
*
* @since 1.0.0
* @return void
*/
public function show_notices() {
$defaults = array(
'id' => '', // Optional, Notice ID. If empty it set `astra-notices-id-<$array-index>`.
'type' => 'info', // Optional, Notice type. Default `info`. Expected [info, warning, notice, error].
'message' => '', // Optional, Message.
'show_if' => true, // Optional, Show notice on custom condition. E.g. 'show_if' => if( is_admin() ) ? true, false, .
'repeat-notice-after' => '', // Optional, Dismiss-able notice time. It'll auto show after given time.
'display-notice-after' => false, // Optional, Dismiss-able notice time. It'll auto show after given time.
'class' => '', // Optional, Additional notice wrapper class.
'priority' => 10, // Priority of the notice.
'display-with-other-notices' => true, // Should the notice be displayed if other notices are being displayed from Astra_Notices.
'is_dismissible' => true,
'capability' => 'manage_options', // User capability - This capability is required for the current user to see this notice.
);
// Count for the notices that are rendered.
$notices_displayed = 0;
$notices = $this->get_notices();
foreach ( $notices as $key => $notice ) {
$notice = wp_parse_args( $notice, $defaults );
// Show notices only for users with `manage_options` cap.
if ( ! current_user_can( $notice['capability'] ) ) {
continue;
}
$notice['id'] = self::get_notice_id( $notice, $key );
$notice['classes'] = self::get_wrap_classes( $notice );
// Notices visible after transient expire.
if ( isset( $notice['show_if'] ) && true === $notice['show_if'] ) {
// don't display the notice if it is not supposed to be displayed with other notices.
if ( 0 !== $notices_displayed && false === $notice['display-with-other-notices'] ) {
continue;
}
if ( self::is_expired( $notice ) ) {
self::markup( $notice );
++$notices_displayed;
}
}
}
}
/**
* Render a notice.
*
* @since 1.0.0
* @param array $notice Notice markup.
* @return void
*/
public static function markup( $notice = array() ) {
wp_enqueue_script( 'astra-notices' );
do_action( 'astra_notice_before_markup' );
do_action( "astra_notice_before_markup_{$notice['id']}" );
?>
<div id="<?php echo esc_attr( $notice['id'] ); ?>" class="<?php echo esc_attr( $notice['classes'] ); ?>" data-repeat-notice-after="<?php echo esc_attr( $notice['repeat-notice-after'] ); ?>">
<div class="notice-container">
<?php do_action( "astra_notice_inside_markup_{$notice['id']}" ); ?>
<?php echo wp_kses_post( $notice['message'] ); ?>
</div>
</div>
<?php
do_action( "astra_notice_after_markup_{$notice['id']}" );
do_action( 'astra_notice_after_markup' );
}
/**
* Get wrapper classes for a notice.
*
* @since 1.0.0
*
* @param array $notice Notice arguments.
* @return array Notice wrapper classes.
*/
private static function get_wrap_classes( $notice ) {
$classes = array( 'astra-notice', 'notice' );
if ( $notice['is_dismissible'] ) {
$classes[] = 'is-dismissible';
}
$classes[] = $notice['class'];
if ( isset( $notice['type'] ) && '' !== $notice['type'] ) {
$classes[] = 'notice-' . $notice['type'];
}
return esc_attr( implode( ' ', $classes ) );
}
/**
* Get HTML ID for a given notice.
*
* @since 1.0.0
*
* @param array $notice Notice arguments.
* @param int $key Notice array index.
* @return string HTML if for the notice.
*/
private static function get_notice_id( $notice, $key ) {
if ( isset( $notice['id'] ) && ! empty( $notice['id'] ) ) {
return $notice['id'];
}
return 'astra-notices-id-' . $key;
}
/**
* Check if the notice is expires.
*
* @since 1.0.0
*
* @param array $notice Notice arguments.
* @return boolean
*/
private static function is_expired( $notice ) {
$transient_status = get_transient( $notice['id'] );
if ( false === $transient_status ) {
if ( isset( $notice['display-notice-after'] ) && false !== $notice['display-notice-after'] ) {
if ( 'delayed-notice' !== get_user_meta( get_current_user_id(), $notice['id'], true ) &&
'notice-dismissed' !== get_user_meta( get_current_user_id(), $notice['id'], true ) ) {
set_transient( $notice['id'], 'delayed-notice', $notice['display-notice-after'] );
update_user_meta( get_current_user_id(), $notice['id'], 'delayed-notice' );
return false;
}
}
// Check the user meta status if current notice is dismissed or delay completed.
$meta_status = get_user_meta( get_current_user_id(), $notice['id'], true );
if ( empty( $meta_status ) || 'delayed-notice' === $meta_status ) {
return true;
}
}
return false;
}
/**
* Get base URL for the astra-notices.
*
* @return mixed URL.
*/
public static function get_url() {
$path = wp_normalize_path( dirname( __FILE__ ) );
$theme_dir = wp_normalize_path( get_template_directory() );
if ( strpos( $path, $theme_dir ) !== false ) {
return trailingslashit( get_template_directory_uri() . str_replace( $theme_dir, '', $path ) );
} else {
return plugin_dir_url( __FILE__ );
}
}
}
/**
* Kicking this off by calling 'get_instance()' method
*/
Astra_Notices::get_instance();
endif;