<?php

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/**

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* AssestCache class

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*

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* @package PUM

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* @copyright Copyright (c) 2023, Code Atlantic LLC

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit;

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}

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/**

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* AssetCache class.

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*/

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class PUM_AssetCache {

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/**

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* Cache directory.

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*

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* @var string

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*/

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public static $cache_dir;

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/**

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* Suffix for minified assets.

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*

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* @var string

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*/

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public static $suffix;

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/**

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* Asset url.

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*

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* @var string

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*/

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public static $asset_url;

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/**

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* JS Url.

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*

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* @var string

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*/

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public static $js_url;

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/**

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* CSS Url.

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*

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* @var string

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*/

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public static $css_url;

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/**

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* Should we disable asset caching?

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*

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* @var bool

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*/

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public static $disabled = true;

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/**

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* Should we output debug information?

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*

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* @var bool

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*/

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public static $debug;

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/**

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* Check to see if the cache has been initialized.

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*

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* @var boolean

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*/

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public static $initialized = false;

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/**

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* Initialize asset cache.

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*/

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public static function init() {

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if ( ! self::$initialized ) {

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self::$cache_dir = self::get_cache_dir();

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self::$debug = Popup_Maker::debug_mode() || ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG );

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self::$suffix = self::$debug ? '' : '.min';

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self::$asset_url = Popup_Maker::$URL . 'assets/';

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self::$js_url = self::$asset_url . 'js/';

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self::$css_url = self::$asset_url . 'css/';

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if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {

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self::$disabled = true;

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} else {

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self::$disabled = pum_get_option( 'disable_asset_caching', false );

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}

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add_action( 'pum_extension_updated', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_extension_deactivated', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_extension_activated', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_regenerate_asset_cache', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_save_settings', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_save_popup', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_save_theme', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_update_core_version', [ __CLASS__, 'reset_cache' ] );

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add_action( 'pum_update_core_version', [ __CLASS__, 'maybe_reset_asset_cache_notices' ] );

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if ( isset( $_GET['flush_popup_cache'] ) && check_admin_referer( 'flush_popup_cache' ) ) {

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add_action( 'init', [ __CLASS__, 'reset_cache' ] );

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}

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add_filter( 'pum_alert_list', [ __CLASS__, 'cache_alert' ] );

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add_action( 'pum_styles', [ __CLASS__, 'global_custom_styles' ] );

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if ( null === get_option( 'pum_files_writeable', null ) ) {

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add_option( 'pum_files_writeable', true );

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add_option( '_pum_writeable_notice_dismissed', true );

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pum_reset_assets();

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}

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if ( is_admin() && current_user_can( 'edit_posts' ) ) {

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add_action( 'init', [ __CLASS__, 'admin_notice_check' ] );

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}

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// Prevent reinitialization.

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self::$initialized = true;

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}

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}

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/**

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* Checks if Asset caching is possible and enabled.

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*

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* @return bool

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*/

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public static function enabled() {

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if ( defined( 'PUM_ASSET_CACHE' ) && ! PUM_ASSET_CACHE ) {

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return false;

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}

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return self::writeable() && ! self::$disabled;

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}

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/**

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* Is the cache directory writeable?

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*

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* @return bool True if directory is writeable

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*/

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public static function writeable() {

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if ( self::$disabled ) {

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return false;

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}

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// If we have already determined files to not be writeable, go ahead and return.

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if ( true !== (bool) get_option( 'pum_files_writeable', true ) ) {

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return false;

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}

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/**

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* Filesystem.

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*

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* @var \WP_Filesystem_Base $wp_filesystem

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*/

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global $wp_filesystem;

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if ( ! function_exists( 'WP_Filesystem' ) ) {

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require_once ABSPATH . 'wp-admin/includes/file.php';

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}

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$results = WP_Filesystem();

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if ( true !== $results ) {

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// Prevents this from running again and set to show the admin notice.

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update_option( 'pum_files_writeable', false );

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update_option( '_pum_writeable_notice_dismissed', false );

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if ( ! is_null( $results ) && is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {

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$error = $wp_filesystem->errors->get_error_message();

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pum_log_message( sprintf( 'Cache directory is not writeable due to filesystem error. Error given: %s', esc_html( $error ) ) );

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} else {

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pum_log_message( 'Cache directory is not writeable due to incorrect filesystem method.' );

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}

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return false;

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}

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// Checks and create cachedir.

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if ( false !== self::$cache_dir && ! is_dir( self::$cache_dir ) ) {

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$wp_filesystem->mkdir( self::$cache_dir );

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}

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// phpcs:ignore WordPress.Security.NonceVerification.Missing

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return false !== self::$cache_dir && $wp_filesystem->is_writable( self::$cache_dir ) && ! isset( $_POST['wp_customize'] );

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}

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/**

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* Regenerate cache on demand.

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*/

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public static function regenerate_cache() {

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self::cache_js();

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self::cache_css();

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}

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/**

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* Gets the directory caching should be stored in.

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*

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* Accounts for various adblock bypass options.

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*

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* @return array|string

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*/

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public static function get_cache_dir() {

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$upload_dir = PUM_Helpers::get_upload_dir_path();

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if ( false === $upload_dir ) {

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return false;

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}

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if ( ! pum_get_option( 'bypass_adblockers', false ) ) {

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return trailingslashit( $upload_dir ) . 'pum';

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}

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return $upload_dir;

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}

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/**

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* Generates a cache filename based on the current adblock bypass settings.

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*

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* @param string $filename Filename.

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*

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* @return string

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*/

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public static function generate_cache_filename( $filename ) {

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if ( ! pum_get_option( 'bypass_adblockers', false ) ) {

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global $blog_id;

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$is_multisite = ( is_multisite() ) ? '-' . $blog_id : '';

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return $filename . $is_multisite;

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}

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$site_url = get_site_url();

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switch ( pum_get_option( 'adblock_bypass_url_method', 'random' ) ) {

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case 'random':

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$filename = md5( $site_url . $filename );

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break;

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case 'custom':

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$filename = preg_replace( '/[^a-z0-9]+/', '-', pum_get_option( 'adblock_bypass_custom_filename', 'pm-' . $filename ) );

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break;

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}

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return $filename;

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}

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/**

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* Generate JS cache file.

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*/

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public static function cache_js() {

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if ( false === self::$cache_dir ) {

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return;

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}

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$js_file = self::generate_cache_filename( 'pum-site-scripts' ) . '.js';

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$js = "/**\n";

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$js .= " * Do not touch this file! This file created by the Popup Maker plugin using PHP\n";

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$js .= ' * Last modified time: ' . wp_date( 'M d Y, h:i:s' ) . "\n";

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$js .= " */\n\n\n";

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$js .= self::generate_js();

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if ( ! self::cache_file( $js_file, $js ) ) {

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update_option( 'pum-has-cached-js', false );

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} else {

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update_option( 'pum-has-cached-js', strtotime( 'now' ) );

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}

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}

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/**

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* Generate CSS cache file.

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*/

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public static function cache_css() {

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if ( false === self::$cache_dir ) {

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return;

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}

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$css_file = self::generate_cache_filename( 'pum-site-styles' ) . '.css';

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$css = "/**\n";

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$css .= " * Do not touch this file! This file created by the Popup Maker plugin using PHP\n";

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$css .= ' * Last modified time: ' . wp_date( 'M d Y, h:i:s' ) . "\n";

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$css .= " */\n\n\n";

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$css .= self::generate_css();

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if ( ! self::cache_file( $css_file, $css ) ) {

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update_option( 'pum-has-cached-css', false );

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} else {

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update_option( 'pum-has-cached-css', strtotime( 'now' ) );

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}

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}

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/**

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* Generate custom JS

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*

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* @return string

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*/

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public static function generate_js() {

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/**

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* Filesystem.

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*

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* @var \WP_Filesystem_Base $wp_filesystem

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*/

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global $wp_filesystem;

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// Load core scripts so we can eliminate another stylesheet.

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$core_js = $wp_filesystem->get_contents( Popup_Maker::$DIR . 'assets/js/site' . self::$suffix . '.js' );

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/**

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* 0 Core

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* 5 Extensions

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* 8 Integrations

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* 10 Per Popup JS

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*/

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$js = [

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'core' => [

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'content' => $core_js,

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'priority' => 0,

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],

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];

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$popups = pum_get_all_popups();

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if ( ! empty( $popups ) ) {

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foreach ( $popups as $popup ) {

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// Set this popup as the global $current.

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pum()->current_popup = $popup;

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ob_start();

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// Allow per popup JS additions.

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do_action( 'pum_generate_popup_js', $popup->ID );

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$popup_js = ob_get_clean();

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if ( ! empty( $popup_js ) ) {

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$js[ 'popup-' . $popup->ID ] = [

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'content' => $popup_js,

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];

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}

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}

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// Clear the global $current.

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pum()->current_popup = null;

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}

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$js = apply_filters( 'pum_generated_js', $js );

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foreach ( $js as $key => $code ) {

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$js[ $key ] = wp_parse_args(

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$code,

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[

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'content' => '',

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'priority' => 10,

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]

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);

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}

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uasort( $js, [ 'PUM_Helpers', 'sort_by_priority' ] );

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$js_code = '';

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foreach ( $js as $key => $code ) {

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if ( ! empty( $code['content'] ) ) {

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$js_code .= $code['content'] . "\n\n";

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}

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}

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return $js_code;

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}

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/**

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* Cache file contents.

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*

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* @param string $filename Filename of file to generate.

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* @param string $contents Contents to put into file.

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*

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* @return bool

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*/

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public static function cache_file( $filename, $contents ) {

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/**

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* WP Filesystem.

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*

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* @var \WP_Filesystem_Base $wp_filesystem

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*/

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global $wp_filesystem;

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if ( false === self::$cache_dir ) {

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return false;

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}

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if ( ! function_exists( 'WP_Filesystem' ) ) {

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require_once ABSPATH . 'wp-admin/includes/file.php';

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}

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$file = trailingslashit( self::$cache_dir ) . $filename;

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WP_Filesystem();

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$results = $wp_filesystem->put_contents( $file, $contents, defined( 'FS_CHMOD_FILE' ) ? FS_CHMOD_FILE : false );

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// If the file is generated and is accessible...

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if ( true === $results && self::is_file_accessible( $filename ) ) {

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return true;

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} else {

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// ... else, let's set our flags to prevent cache running again for now.

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update_option( 'pum_files_writeable', false );

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update_option( '_pum_writeable_notice_dismissed', false );

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return false;

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}

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}

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/**

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* Generate Custom Styles

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*

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* @return string

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*/

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public static function generate_css() {

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/**

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* WP Filesystem.

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*

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* @var \WP_Filesystem_Base $wp_filesystem

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*/

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global $wp_filesystem;

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// Include core styles so we can eliminate another stylesheet.

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$core_css = $wp_filesystem->get_contents( Popup_Maker::$DIR . 'assets/css/pum-site' . ( is_rtl() ? '-rtl' : '' ) . self::$suffix . '.css' );

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/**

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* 0 Core

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* 1 Popup Themes

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* 5 Extensions

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* 10 Per Popup CSS

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*/

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$css = [

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'imports' => [

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'content' => self::generate_font_imports(),

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'priority' => - 1,

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],

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'core' => [

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'content' => $core_css,

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'priority' => 0,

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],

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'themes' => [

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'content' => self::generate_popup_theme_styles(),

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'priority' => 1,

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],

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'popups' => [

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'content' => self::generate_popup_styles(),

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'priority' => 15,

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],

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'custom' => [

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'content' => self::custom_css(),

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'priority' => 20,

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],

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];

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$css = apply_filters( 'pum_generated_css', $css );

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foreach ( $css as $key => $code ) {

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$css[ $key ] = wp_parse_args(

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$code,

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[

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'content' => '',

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'priority' => 10,

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]

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);

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}

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uasort( $css, [ 'PUM_Helpers', 'sort_by_priority' ] );

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$css_code = '';

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foreach ( $css as $key => $code ) {

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if ( ! empty( $code['content'] ) ) {

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$css_code .= $code['content'] . "\n\n";

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}

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}

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return $css_code;

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}

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/**

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* Render global custom styles.

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*/

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public static function global_custom_styles() {

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if ( pum_get_option( 'adjust_body_padding' ) ) {

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echo 'html.pum-open.pum-open-overlay.pum-open-scrollable body > *:not([aria-modal="true"]) { padding-right: ' . esc_attr( pum_get_option( 'body_padding_override', '15px' ) ) . '!important; }';

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}

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}

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[485] Fix | Delete

/**

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* Generate Popup Styles

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*

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* @return string

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*/

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public static function generate_popup_styles() {

[491] Fix | Delete

$popup_css = '';

[492] Fix | Delete

[493] Fix | Delete

$popups = pum_get_all_popups();

[494] Fix | Delete

[495] Fix | Delete

if ( ! empty( $popups ) ) {

[496] Fix | Delete

foreach ( $popups as $popup ) {

[497] Fix | Delete

// Set this popup as the global $current.

[498] Fix | Delete

pum()->current_popup = $popup;

[499] Fix | Delete