# ultimate-post/5.0.30/classes/Styles.php

Post Grid Gutenberg Blocks – PostX, version 5.0.30. 860 lines.

- Page: https://pluginprobe.com/plugins/ultimate-post/5.0.30/code/classes/Styles.php
- Raw: https://pluginprobe.com/plugins/ultimate-post/5.0.30/raw/classes/Styles.php
- Modified: 2026-06-30T18:32:54+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/ultimate-post/5.0.30/code/classes/Styles.php#L10-L20`.

```php
<?php
/**
 * Styles Add and Style REST API Action.
 *
 * @package ULTP\Styles
 * @since v.1.0.0
 */
namespace ULTP;

defined( 'ABSPATH' ) || exit;

/**
 * Styles class.
 *
 * Handles enqueuing and management of plugin stylesheets for Ultimate Post.
 *
 * @package ULTP\Styles
 * @since 4.0.0
 */
class Styles {

	/**
	 * Setup class.
	 *
	 * @since v.1.0.0
	 */
	private $changed_wp_block = '';

	public function __construct() {
		add_action( 'rest_api_init', array( $this, 'rest_api_callback' ) );
		add_action( 'wp_ajax_disable_google_font', array( $this, 'disable_google_font_callback' ) );

		add_action( 'admin_init', array( $this, 'postx_global_css_callback' ) );
		add_action( 'admin_init', array( $this, 'postx_global_css_dependancies' ) );
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_postx_block_css' ) );
		add_filter( 'render_block', array( $this, 'render_block_callback' ), 10, 2 ); // render block to enqueue corresponding css.
		add_action( 'ultp_enqueue_postx_block_css', array( $this, 'ultp_enqueue_postx_block_css_callback' ), 10, 1 ); // action to enqueue the block css.

		add_action( 'after_delete_post', array( $this, 'ultp_delete_post_callback' ), 10, 2 ); // Delete Plugin Data CSS file delete Action.
	}

	/**
	 * REST API Action
	 *
	 * @since v.1.0.0
	 * @return void
	 */
	public function rest_api_callback() {
		register_rest_route(
			'ultp/v1',
			'/save_block_css/',
			array(
				array(
					'methods'             => 'POST',
					'callback'            => array( $this, 'save_block_content_css' ),
					'permission_callback' => function () {
						return current_user_can( 'publish_posts' );
					},
					'args'                => array(),
				),
			)
		);
		register_rest_route(
			'ultp/v1',
			'/get_other_post_content/',
			array(
				array(
					'methods'             => 'POST',
					'callback'            => array( $this, 'get_other_post_content_callback' ),
					'permission_callback' => function () {
						return current_user_can( 'publish_posts' );
					},
					'args'                => array(),
				),
			)
		);
		register_rest_route(
			'ultp/v1',
			'/action_option/',
			array(
				array(
					'methods'             => 'POST',
					'callback'            => array( $this, 'global_settings_action' ),
					'permission_callback' => function () {
						return current_user_can( 'edit_posts' );
					},
					'args'                => array(),
				),
			)
		);
		register_rest_route(
			'ultp/v1',
			'/postx_presets/',
			array(
				array(
					'methods'             => 'POST',
					'callback'            => array( $this, 'postx_presets_callback' ),
					'permission_callback' => function () {
						return current_user_can( 'manage_options' ); // manage_options For patch security issue.
					},
					'args'                => array(),
				),
			)
		);
	}

	/**
	 * Save block css corresponding to page id
	 *
	 * @since v.1.0.0
	 *
	 * @param OBJECT $request Request Param of the REST API.
	 * @return ARRAY/Exception | Array of the Custom Message.
	 * @throws \Exception If CSS cannot be saved due to permission issues.
	 */
	public function save_block_content_css( $request ) {

		$params     = $request->get_params();
		$post_id    = isset( $params['post_id'] ) ? ultimate_post()->ultp_rest_sanitize_params( $params['post_id'] ) : '';
		$has_block  = isset( $params['has_block'] ) ? rest_sanitize_boolean( $params['has_block'] ) : '';
		$is_preview = isset( $params['preview'] ) ? rest_sanitize_boolean( $params['preview'] ) : '';
		$is_widget  = $post_id == 'ultp-widget';

		$cap = '';
		if ( $post_id == 'ultp-widget' || get_post_type( $post_id ) == 'wp_template' || get_post_type( $post_id ) == 'wp_template_part' ) {
			$cap = 'publish_posts';
		}
		if ( ! ultimate_post()->permission_check_for_restapi( is_numeric( $post_id ) ? $post_id : false, $cap ) ) {
			return;
		}
		if ( ! empty( $params['fseTempId'] ) ) {
			// Delete previously saved fse css/old compatibility
			$this->ultp_delete_post_callback( str_replace( '//', '__', $params['fseTempId'] ), '' );
		}
		try {
			$upload_dir_url = wp_upload_dir();
			$dir            = trailingslashit( $upload_dir_url['basedir'] ) . 'ultimate-post/';
			$upload_dir_url = wp_upload_dir();
			$dir            = trailingslashit( $upload_dir_url['basedir'] ) . 'ultimate-post/';
			if ( $has_block ) {

				$ultp_block_css = $this->set_top_css( $params['block_css'] );
				if ( $is_preview ) {
					set_transient( '_ultp_preview_' . $post_id, $ultp_block_css, 60 * 60 );
					return array(
						'success' => true,
						'preview' => true,
					);
				}

				global $wp_filesystem;
				if ( ! $wp_filesystem ) {
					require_once ABSPATH . 'wp-admin/includes/file.php';
				}
				if ( $is_widget ) {
					update_option( $post_id, $params['block_css'] );
				} else {
					$post_id = (int) $post_id;
					update_post_meta( $post_id, '_ultp_active', 'yes' );
					update_post_meta( $post_id, '_ultp_css', $ultp_block_css );
				}
				ultimate_post()->set_setting( 'save_version', wp_rand( 1, 1000 ) );
				$filename = "ultp-css-{$post_id}.css";

				WP_Filesystem( false, $upload_dir_url['basedir'], true );
				if ( ! $wp_filesystem->is_dir( $dir ) ) {
					$wp_filesystem->mkdir( $dir );
				}
				if ( ! $wp_filesystem->put_contents( $dir . $filename, $ultp_block_css ) ) {
					throw new \Exception(__('CSS can not be saved due to permission!!!', 'ultimate-post')); //phpcs:ignore
				}
				return array(
					'success' => true,
					'message' => __( 'PostX css file has been updated.', 'ultimate-post' ),
				);

			} else {
				if ( $is_widget ) {
					update_option( $post_id, '' );
				} else {
					$post_id = (int) $post_id;
					delete_post_meta( $post_id, '_ultp_active' );
					delete_post_meta( $post_id, '_ultp_css' );
				}
				$filename = "ultp-css-{$post_id}.css";
				if ( file_exists( $dir . $filename ) ) {
					wp_delete_file( $dir . $filename );
				}
				return array(
					'success' => true,
					'message' => __( 'Data Delete Done', 'ultimate-post' ),
				);
			}
		} catch ( \Exception $e ) {
			return array(
				'success' => false,
				'message' => $e->getMessage(),
			);
		}
	}

	/**
	 * Get Post Content for other Posts while performing css save
	 *
	 * @since v.4.1.10
	 * @param OBJECT | $server Request Param of the REST API.
	 * @return ARRAY/Exception | Array of the Custom Message.
	 */
	public function get_other_post_content_callback( $server ) {
		$post    = $server->get_params();
		$post_id = isset( $post['postId'] ) ? ultimate_post()->ultp_rest_sanitize_params( $post['postId'] ) : '';
		$p_type  = get_post_type( $post_id );

		if ( $post_id &&
			(
				'wp_template_part' === $p_type ||
				'wp_block' === $p_type ||
				ultimate_post()->permission_check_for_restapi( $post_id )
			)
		) {
			if ( 'wp_block' === $p_type ) {
				$this->handle_wpblock_current_id( $post_id );
			}
			return array(
				'success' => true,
				'data'    => get_post( $post_id )->post_content,
				'message' => __( 'Data retrive done', 'ultimate-post' ),
			);
		} else {
			return array(
				'success' => false,
				'message' => __( 'Data not found!!', 'ultimate-post' ),
			);
		}
	}


	/**
	 * Get and Set PostX Global Settings
	 *
	 * @since v.2.4.24
	 * @param OBJECT | $server Request Param of the REST API.
	 * @return ARRAY | Array of the Custom Message.
	 */
	public function global_settings_action( $server ) {
		$post  = $server->get_params();
		$_type = isset( $post['type'] ) ? ultimate_post()->ultp_rest_sanitize_params( $post['type'] ) : '';
		if ( $_type && ultimate_post()->permission_check_for_restapi() ) {
			if ( $_type == 'set' ) {
				if ( current_user_can( 'edit_others_posts' ) ) {
					update_option( 'postx_global', ultimate_post()->ultp_rest_sanitize_params( $post['data'] ) );
				}
				return array( 'success' => true );
			} else {
				return array(
					'success' => true,
					'data'    => get_option( 'postx_global', array() ),
				);
			}
		} else {
			return array( 'success' => false );
		}
	}

	/**
	 * Get and Set PostX Presets Settings
	 *
	 * @since v.2.4.24
	 * @param OBJECT | $server Request Param of the REST API.
	 * @return ARRAY | Array of the Custom Message.
	 */
	public function postx_presets_callback( $server ) {
		$post = $server->get_params();
		$type = isset( $post['type'] ) ? sanitize_text_field( $post['type'] ) : '';
		$key  = isset( $post['key'] ) ? sanitize_text_field( $post['key'] ) : '';
		$data = isset( $post['data'] ) ? $post['data'] : '';

		if ( $type ) {
			if ( $type == 'set' ) {
				if ( current_user_can( 'edit_others_posts' ) ) {
					update_option( $key, $data );
				}
				return array( 'success' => true );
			} else {
				return array(
					'success' => true,
					'data'    => get_option( $key, array() ),
				);
			}
		} else {
			return array( 'success' => false );
		}
	}

	/**
	 * Disable Google Font Callback
	 *
	 * * @since v.2.8.1
	 *
	 * @return STRING
	 */
	public function disable_google_font_callback() {
		if ( ! ( isset( $_REQUEST['wpnonce'] ) &&
			wp_verify_nonce( sanitize_key( wp_unslash( $_REQUEST['wpnonce'] ) ), 'ultp-nonce' ) )
		) {
			return;
		}
		if ( ! ultimate_post()->permission_check_for_restapi() ) {
			return;
		}

		global $wp_filesystem;
		if ( ! $wp_filesystem ) {
			require_once ABSPATH . 'wp-admin/includes/file.php';
			WP_Filesystem();
		}

		$upload_dir_url = wp_upload_dir();
		$dir            = trailingslashit( $upload_dir_url['basedir'] ) . 'ultimate-post/';
		$css_dir        = glob( $dir . '*.css' );

		// Custom Font.
		$custom_fonts = array();
		if ( ultimate_post()->get_setting( 'ultp_custom_font' ) == 'true' ) {
			$args  = array(
				'post_type'   => 'ultp_custom_font',
				'post_status' => 'publish',
				'numberposts' => -1,
				'order'       => 'ASC',
			);
			$posts = get_posts( $args );
			if ( $posts ) {
				foreach ( $posts as $post ) {
					if ( ! empty( $post->post_title ) ) {
						$custom_fonts[] = $post->post_title;
					}
				}
			}
		}
		wp_reset_postdata();
		$custom_fonts = implode( '|', $custom_fonts );
		// system font.
		$exclude_typo = implode( '|', array( 'Arial', 'Tahoma', 'Verdana', 'Helvetica', 'Times New Roman', 'Trebuchet MS', 'Georgia' ) );

		if ( count( $css_dir ) > 0 ) {
			foreach ( $css_dir as $key => $value ) {
				$css        = $wp_filesystem->get_contents( $value );
				$filter_css = preg_replace( '/(@import)[\w\s:\/?=,;.\'()+]*;/m', '', $css ); // Remove Import Font.
				$final_css  = preg_replace( '/(font-family:)((?!' . $custom_fonts . $exclude_typo . ')[\w\s:,\\\'-])*;/mi', '', $filter_css ); // Font Replace Except Default Font
				$wp_filesystem->put_contents( $value, $final_css ); // Update CSS File.
			}
		}

		global $wpdb;
		$results = $wpdb->get_results( "SELECT * FROM $wpdb->postmeta WHERE `meta_key`='_ultp_css'" ); // phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching
		if ( ! empty( $results ) ) {
			foreach ( $results as $key => $value ) {
				$filter_css = preg_replace( '/(@import)[\w\s:\/?=,;.\'()+]*;/m', '', $value->meta_value ); // Remove Import Font.
				$final_css  = preg_replace( '/(font-family:)((?!' . $custom_fonts . $exclude_typo . ')[\w\s:,\\\'-])*;/mi', '', $filter_css ); // Font Replace Except Default Font.
				update_post_meta( $value->post_id, '_ultp_css', $final_css );
			}
		}

		return wp_send_json_success( __( 'CSS Updated!', 'ultimate-post' ) );
	}

	/**
	 * Check global style loaded or not
	 *
	 * @since 4.0.0
	 * @return NULL
	 */
	public function postx_global_css_dependancies() {
		$this->postx_global_css_callback();
		$wp_styles = wp_styles();
		$style     = $wp_styles->query( 'wp-block-library', 'registered' );
		if ( ! $style ) {
			return;
		}
		$array = array( 'wpxpo-global-style', 'ultp-preset-colors-style', 'ultp-preset-gradient-style', 'ultp-preset-typo-style' );
		foreach ( $array as $arr ) {
			if ( wp_style_is( $arr, 'registered' ) && ! in_array( $arr, $style->deps, true ) ) {
				$style->deps[] = $arr;
			}
		}
	}

	/**
	 * Set Global Color Codes
	 *
	 * @since v.1.0.0
	 * @return void
	 */
	public function postx_global_css_callback() {
		// Preset CSS
		$global     = get_option( 'postx_global', array() );
		$custom_css = ':root {
			--preset-color1: ' . ( isset( $global['presetColor1'] ) ? $global['presetColor1'] : '#037fff' ) . ';
			--preset-color2: ' . ( isset( $global['presetColor2'] ) ? $global['presetColor2'] : '#026fe0' ) . ';
			--preset-color3: ' . ( isset( $global['presetColor3'] ) ? $global['presetColor3'] : '#071323' ) . ';
			--preset-color4: ' . ( isset( $global['presetColor4'] ) ? $global['presetColor4'] : '#132133' ) . ';
			--preset-color5: ' . ( isset( $global['presetColor5'] ) ? $global['presetColor5'] : '#34495e' ) . ';
			--preset-color6: ' . ( isset( $global['presetColor6'] ) ? $global['presetColor6'] : '#787676' ) . ';
			--preset-color7: ' . ( isset( $global['presetColor7'] ) ? $global['presetColor7'] : '#f0f2f3' ) . ';
			--preset-color8: ' . ( isset( $global['presetColor8'] ) ? $global['presetColor8'] : '#f8f9fa' ) . ';
			--preset-color9: ' . ( isset( $global['presetColor9'] ) ? $global['presetColor9'] : '#ffffff' ) . ';
		}';
		$theme_css  = isset( $global['globalCSS'] ) && $global['globalCSS'] ? $global['globalCSS'] : $custom_css . '{}';

		wp_register_style( 'wpxpo-global-style', false, array(), ULTP_VER );
		wp_enqueue_style( 'wpxpo-global-style' );
		wp_add_inline_style( 'wpxpo-global-style', $theme_css );

		// preset Colors.
		$ultpPresetColors = get_option( 'ultpPresetColors', array() );

		$rootCSS     = ( isset( $ultpPresetColors['rootCSS'] ) && $ultpPresetColors['rootCSS'] ) ? $ultpPresetColors['rootCSS'] : ':root { --postx_preset_Base_1_color: #f4f4ff; --postx_preset_Base_2_color: #dddff8; --postx_preset_Base_3_color: #B4B4D6; --postx_preset_Primary_color: #3323f0; --postx_preset_Secondary_color: #4a5fff; --postx_preset_Tertiary_color: #FFFFFF; --postx_preset_Contrast_3_color: #545472; --postx_preset_Contrast_2_color: #262657; --postx_preset_Contrast_1_color: #10102e; --postx_preset_Over_Primary_color: #ffffff;  }';
		$savedDLMode = ( isset( $global['enableDark'] ) && $global['enableDark'] ) ? 'ultpdark' : 'ultplight';
		$localDLMode = isset( $_COOKIE['ultplocalDLMode'] ) ? $_COOKIE['ultplocalDLMode'] : $savedDLMode;

		if ( $localDLMode == 'ultplight' && $savedDLMode == 'ultpdark' ) {
			$rootCSS = $this->handle_dark_light_color_switcher( $rootCSS );
		} elseif ( $localDLMode == 'ultpdark' ) {
			if ( $savedDLMode == 'ultplight' ) {
				$rootCSS = $this->handle_dark_light_color_switcher( $rootCSS );
			}
			$rootCSS = $rootCSS . ' .ultp-dark-logo.wp-block-site-logo img {content: url("' . get_option( 'ultp_site_dark_logo', '' ) . '");}';
		}

		wp_register_style( 'ultp-preset-colors-style', false, array(), ULTP_VER );
		wp_enqueue_style( 'ultp-preset-colors-style' );
		wp_add_inline_style( 'ultp-preset-colors-style', $rootCSS );

		// preset Gradients.
		$ultpPresetGradients = get_option( 'ultpPresetGradients', array() );
		wp_register_style( 'ultp-preset-gradient-style', false, array(), ULTP_VER );
		wp_enqueue_style( 'ultp-preset-gradient-style' );
		wp_add_inline_style( 'ultp-preset-gradient-style', isset( $ultpPresetGradients['rootCSS'] ) && $ultpPresetGradients['rootCSS'] ? $ultpPresetGradients['rootCSS'] : ':root { --postx_preset_Primary_to_Secondary_to_Right_gradient: linear-gradient(90deg, var(--postx_preset_Primary_color) 0%, var(--postx_preset_Secondary_color) 100%); --postx_preset_Primary_to_Secondary_to_Bottom_gradient: linear-gradient(180deg, var(--postx_preset_Primary_color) 0%, var(--postx_preset_Secondary_color) 100%); --postx_preset_Secondary_to_Primary_to_Right_gradient: linear-gradient(90deg, var(--postx_preset_Secondary_color) 0%, var(--postx_preset_Primary_color) 100%); --postx_preset_Secondary_to_Primary_to_Bottom_gradient: linear-gradient(180deg, var(--postx_preset_Secondary_color) 0%, var(--postx_preset_Primary_color) 100%); --postx_preset_Cold_Evening_gradient: linear-gradient(0deg, rgb(12, 52, 131) 0%, rgb(162, 182, 223) 100%, rgb(107, 140, 206) 100%, rgb(162, 182, 223) 100%); --postx_preset_Purple_Division_gradient: linear-gradient(0deg, rgb(112, 40, 228) 0%, rgb(229, 178, 202) 100%); --postx_preset_Over_Sun_gradient: linear-gradient(60deg, rgb(171, 236, 214) 0%, rgb(251, 237, 150) 100%); --postx_preset_Morning_Salad_gradient: linear-gradient(-255deg, rgb(183, 248, 219) 0%, rgb(80, 167, 194) 100%); --postx_preset_Fabled_Sunset_gradient: linear-gradient(-270deg, rgb(35, 21, 87) 0%, rgb(68, 16, 122) 29%, rgb(255, 19, 97) 67%, rgb(255, 248, 0) 100%);  }' );

		// preset Typos.
		$ultpPresetTypos = get_option( 'ultpPresetTypos', array() );
		wp_register_style( 'ultp-preset-typo-style', false, array(), ULTP_VER );
		wp_enqueue_style( 'ultp-preset-typo-style' );
		wp_add_inline_style( 'ultp-preset-typo-style', isset( $ultpPresetTypos['presetTypoCSS'] ) && $ultpPresetTypos['presetTypoCSS'] ? $ultpPresetTypos['presetTypoCSS'] : ':root { --postx_preset_Heading_typo_font_family: Helvetica; --postx_preset_Heading_typo_font_family_type: sans-serif; --postx_preset_Heading_typo_font_weight: 600; --postx_preset_Heading_typo_text_transform: capitalize; --postx_preset_Body_and_Others_typo_font_family: Helvetica; --postx_preset_Body_and_Others_typo_font_family_type: sans-serif; --postx_preset_Body_and_Others_typo_font_weight: 400; --postx_preset_Body_and_Others_typo_text_transform: lowercase; --postx_preset_body_typo_font_size_lg: 16px; --postx_preset_paragraph_1_typo_font_size_lg: 12px; --postx_preset_paragraph_2_typo_font_size_lg: 12px; --postx_preset_paragraph_3_typo_font_size_lg: 12px; --postx_preset_heading_h1_typo_font_size_lg: 42px; --postx_preset_heading_h2_typo_font_size_lg: 36px; --postx_preset_heading_h3_typo_font_size_lg: 30px; --postx_preset_heading_h4_typo_font_size_lg: 24px; --postx_preset_heading_h5_typo_font_size_lg: 20px; --postx_preset_heading_h6_typo_font_size_lg: 16px; }' );
	}

	/**
	 * Enqueue The Block Style
	 *
	 * * @since v.4.1.8
	 *
	 * @return void
	 */
	public function enqueue_postx_block_css() {
		$this->postx_global_css_callback();
		if ( apply_filters( 'postx_common_script', false ) ||
			isset( $_GET['et_fb'] )       // divi theme issue.
		) {
			ultimate_post()->register_scripts_common();
		}
		if ( is_admin() ) {
			return;
		}
		if ( wp_is_block_theme() ) {
			$this->handle_old_fse_css();
			$this->handle_fse_template_parts_css();
		}
		$css     = '';
		$post_id = ultimate_post()->get_ID();
		if ( isset($_GET['preview_id']) && isset($_GET['preview_nonce']) ) {	// @codingStandardsIgnoreLine.
			$css = get_transient( '_ultp_preview_' . $post_id, true );
			if ( ! $css ) {
				$css = get_post_meta( $post_id, '_ultp_css', true );
			}
		}
		do_action(
			'ultp_enqueue_postx_block_css',
			array(
				'post_id' => $post_id,
				'css'     => $css,
			)
		);
	}


	/**
	 * Enqueue The Block Style based on block( wp_block, fse_template, wp_template, wp_template_part )
	 *
	 * @since v.4.1.8
	 *
	 * @param STRING $block_content The block content.
	 * @param ARRAY  $block         The block data array.
	 * @return void
	 */
	public function render_block_callback( $block_content, $block ) {
		// ultimate-post/social
		$block_list = array(
			'ultimate-post/menu',
			'ultimate-post/menu-item', 
			'ultimate-post/accordion-item',
			'ultimate-post/tabs',
			'ultimate-post/gallery',
			'ultimate-post/social',
			'ultimate-post/button',
			'ultimate-post/list',
			'ultimate-post/table-of-content'
		);

		if ( isset( $block['blockName'] ) ) {
			if ( in_array($block['blockName'], $block_list) ) {
				switch ($block['blockName']) {
					case 'ultimate-post/menu':
						$start = '_ultp_mn_ic_';
						$end = '_ultp_mn_ic_end_';
						break;
					case 'ultimate-post/menu-item':
						$start = '_ultp_mi_ic_';
						$end = '_ultp_mi_ic_end_';
						break;
					case 'ultimate-post/accordion-item':
						$start = '_ultp_aci_ic_';
						$end = '_ultp_aci_ic_end_';
						break;
					case 'ultimate-post/tabs':
						$start = '_ultp_tb_ic_';
						$end = '_ultp_tb_ic_end_';
						break;
					case 'ultimate-post/gallery':
						$start = '_ultp_gl_ic_';
						$end = '_ultp_gl_ic_end_';
						break;
					case 'ultimate-post/social':
						$start = '_ultp_sc_ic_';
						$end = '_ultp_sc_ic_end_';
						break;
					case 'ultimate-post/button':
						$start = '_ultp_btn_ic_';
						$end = '_ultp_btn_ic_end_';
						break;
					case 'ultimate-post/list':
						$start = '_ultp_list_ic_';
						$end = '_ultp_list_ic_end_';
						break;
					case 'ultimate-post/table-of-content':
						$start = '_ultp_toc_ic_';
						$end = '_ultp_toc_ic_end_';
						break;
				}
				// ultimate-post/list
				$pattern = '/' . $start . '(.*?)' . $end . '/';
				preg_match_all( $pattern, $block_content, $matches );
				if ( is_array( $matches[1] ) ) {
					foreach ( $matches[1] as $m ) {
						if ( $m ) {
							$block_content = str_replace( $start . $m . $end, ultimate_post()->get_svg_icon( $m ), $block_content );
						}
					}
				}
			}
			if (
				$block['blockName'] == 'ultimate-post/mega-menu' &&
				! ultimate_post()->is_lc_active()
			) {
				return '';
			}
		}
		if ( ! is_admin() &&
			isset( $block['blockName'] ) &&
			$block['blockName'] === 'core/block' &&
			! empty( $block['attrs']['ref'] )
		) {
			// Validate ref_id is a positive integer
			$ref_id = absint( $block['attrs']['ref'] );
			if ( $ref_id < 1 ) {
				return $block_content;
			}
			
			if ( get_post_type( $ref_id ) === 'wp_block' &&
				get_post_meta( $ref_id, '_ultp_active', true ) === 'yes'
			) {
				do_action(
					'ultp_enqueue_postx_block_css',
					array(
						'post_id' => $ref_id,
						'css'     => '',
					)
				);
			}
		}
		if ( ! is_admin() &&
			isset( $block['blockName'] ) &&
			strpos( $block['blockName'], 'ultimate-post/' ) === 0
			&& ! empty( $block['attrs']['currentPostId'] )
		) {
			do_action(
				'ultp_enqueue_postx_block_css',
				array(
					'post_id' => $block['attrs']['currentPostId'],
					'css'     => '',
				)
			);
		}
		return $block_content;
	}

	/**
	 * Enqueue The Block Style
	 *
	 * @since v.4.1.8
	 *
	 * @param ARRAY $data The data array containing post_id and css.
	 * @return NULL
	 */
	public function ultp_enqueue_postx_block_css_callback( $data ) {
		$post_id = isset( $data['post_id'] ) ? $data['post_id'] : '';
		$css     = isset( $data['css'] ) ? $data['css'] : '';
		if ( wp_style_is( "ultp-post-{$post_id}", 'enqueued' ) ) {
			return;
		}

		if ( $post_id ) {
			if ( $css == '' ) {
				global $wp_filesystem;
				if ( ! $wp_filesystem ) {
					require_once ABSPATH . 'wp-admin/includes/file.php';
				}
				WP_Filesystem();
				$upload_dir_url = wp_upload_dir();
				$_path          = trailingslashit( $upload_dir_url['basedir'] ) . "ultimate-post/ultp-css-{$post_id}.css";
				$css            = '';
				if ( file_exists( $_path ) ) {
					$css = $wp_filesystem->get_contents( $_path );
				} elseif ( $post_id == 'ultp-widget' ) {
						$css = get_option( $post_id, true );
				} else {
					$css = get_post_meta( $post_id, '_ultp_css', true );
				}
			}
			if ( $css ) {
				ultimate_post()->register_scripts_common();
				wp_register_style( "ultp-post-{$post_id}", false );
				wp_enqueue_style( "ultp-post-{$post_id}" );
				wp_add_inline_style( "ultp-post-{$post_id}", $css );
			}
		}
	}

	/**
	 * Enqueue CSS for FSE template parts (header, footer, etc.) that contain PostX blocks.
	 * Must run during wp_enqueue_scripts (before wp_head) so styles land in <head>.
	 *
	 * @since v.4.1.8
	 * @return void
	 */
	public function handle_fse_template_parts_css() {
		$parts = get_posts(
			array(
				'post_type'      => 'wp_template_part',
				'meta_query'     => array(
					array(
						'key'   => '_ultp_active',
						'value' => 'yes',
					),
				),
				'posts_per_page' => -1,
				'fields'         => 'ids',
			)
		);
		
		if ( empty( $parts ) ) {
			return;
		}
		
		$upload_dir = wp_upload_dir();
		$dir        = trailingslashit( $upload_dir['basedir'] ) . 'ultimate-post/';
		
		foreach ( $parts as $part_id ) {
			// Validate post ID is numeric
			$part_id = absint( $part_id );
			if ( $part_id < 1 ) {
				continue;
			}
			
			$css_file = $dir . "ultp-css-{$part_id}.css";
			
			if ( file_exists( $css_file ) ) {
				do_action(
					'ultp_enqueue_postx_block_css',
					array(
						'post_id' => $part_id,
						'css'     => '',
					)
				);
			}
		}
	}

	/**
	 * Enqueue The Block Style for old saved fse
	 *
	 * * @since v.4.1.8
	 *
	 * @return void
	 */
	public function handle_old_fse_css() {
		global $_wp_current_template_id;
		if ( isset( $_wp_current_template_id ) ) {
			$template_id    = str_replace( '//', '__', $_wp_current_template_id );
			$upload_dir_url = wp_upload_dir();
			$_path          = trailingslashit( $upload_dir_url['basedir'] ) . "ultimate-post/ultp-css-{$template_id}.css";
			if ( file_exists( $_path ) ) {
				do_action(
					'ultp_enqueue_postx_block_css',
					array(
						'post_id' => $template_id,
						'css'     => '',
					)
				);
			}
		}
	}


	/**
	 * Handle WP Block postid
	 *
	 * @since v.4.1.8
	 * @param OBJECT $post_id Request Param of the REST API.
	 * @return void
	 */
	public function handle_wpblock_current_id( $post_id ) {
		$this->changed_wp_block = '';
		$post                   = get_post( $post_id );
		$post_content           = $post->post_content;

		// Parse the blocks
		$blocks         = parse_blocks( $post_content );
		$updated_blocks = $this->update_block_attributes_func( $blocks, $post_id );
		if ( $this->changed_wp_block ) {
			wp_update_post(
				array(
					'ID'           => $post_id,
					'post_content' => serialize_blocks( $updated_blocks ),
				)
			);
		}
	}

	/**
	 * Handle WP Block postid save
	 *
	 * @since v.4.1.8
	 * @param ARRAY      $blocks   The array of blocks to update.
	 * @param INT|STRING $post_id The post ID to set in block attributes.
	 * @return array/Exception | Array of the Custom Message
	 */
	function update_block_attributes_func( $blocks, $post_id ) {
		foreach ( $blocks as &$block ) {
			if ( strpos( $block['blockName'], 'ultimate-post/' ) > -1 &&
				isset( $block['attrs']['currentPostId'] ) &&
				$post_id != $block['attrs']['currentPostId']
			) {
				$this->changed_wp_block = true;
				$block['attrs']         = array_merge( $block['attrs'], array( 'currentPostId' => $post_id ) );
			}
			// Recursively update inner blocks.
			if ( ! empty( $block['innerBlocks'] ) ) {
				$block['innerBlocks'] = $this->update_block_attributes_func( $block['innerBlocks'], $post_id );
			}
		}
		return $blocks;
	}

	/**
	 * Save Import CSS in the top of the File
	 *
	 * @since v.1.0.0
	 * @param STRING | $get_css CSS (STRING).
	 * @return STRING | Generated CSS
	 */
	public function set_top_css( $get_css = '' ) {

		$disable_google_font = ultimate_post()->get_setting( 'disable_google_font' );
		if ( $disable_google_font != 'yes' ) {
			$css_url     = "@import url('https://fonts.googleapis.com/css?family=";
			$font_exists = substr_count( $get_css, $css_url );
			if ( $font_exists ) {
				$pattern = sprintf( '/%s(.+?)%s/ims', preg_quote( $css_url, '/' ), preg_quote( "');", '/' ) );
				if ( preg_match_all( $pattern, $get_css, $matches ) ) {
					$fonts   = $matches[0];
					$get_css = str_replace( $fonts, '', $get_css );
					if ( preg_match_all( '/font-weight[ ]?:[ ]?[\d]{3}[ ]?;/', $get_css, $matche_weight ) ) {
						$weight = array_map(
							function ( $val ) {
								$process = trim( str_replace( array( 'font-weight', ':', ';' ), '', $val ) );
								if ( is_numeric( $process ) ) {
										return $process;
								}
							},
							$matche_weight[0]
						);
						foreach ( $fonts as $key => $val ) {
							$fonts[ $key ] = str_replace( "');", '', $val ) . ':' . implode( ',', $weight ) . "');";
						}
					}
					$fonts   = array_unique( $fonts );
					$get_css = implode( '', $fonts ) . $get_css;
				}
			}
		}
		return $get_css;
	}


	/**
	 * Swap color for dark light
	 *
	 * @since 4.0.0
	 * @param STRING $rootCSS The root CSS string to swap colors in.
	 * @return NULL
	 */
	public function handle_dark_light_color_switcher( $rootCSS ) {
		$rootCSS = str_replace(
			array( '--postx_preset_Base_1_color', '--postx_preset_Base_2_color', '--postx_preset_Base_3_color' ),
			array( '--postx_preset_Base_1_color_dum', '--postx_preset_Base_2_color_dum', '--postx_preset_Base_3_color_dum' ),
			$rootCSS
		);
		$rootCSS = str_replace(
			array( '--postx_preset_Contrast_1_color', '--postx_preset_Contrast_2_color', '--postx_preset_Contrast_3_color' ),
			array( '--postx_preset_Base_1_color', '--postx_preset_Base_2_color', '--postx_preset_Base_3_color' ),
			$rootCSS
		);
		$rootCSS = str_replace(
			array( '--postx_preset_Base_1_color_dum', '--postx_preset_Base_2_color_dum', '--postx_preset_Base_3_color_dum' ),
			array( '--postx_preset_Contrast_1_color', '--postx_preset_Contrast_2_color', '--postx_preset_Contrast_3_color' ),
			$rootCSS
		);
		return $rootCSS;
	}


	/**
	 * Delete Plugin Data CSS file delete Action
	 *
	 * @since v.2.9.8
	 *
	 * @param MIXED $post_id The post ID whose CSS file should be deleted.
	 * @param MIXED $post    The post object (unused).
	 * @return void
	 */
	public function ultp_delete_post_callback( $post_id, $post ) {
		$upload          = wp_upload_dir();
		$upload_dir      = $upload['basedir'];
		$upload_dir_path = $upload_dir . "/ultimate-post/ultp-css-{$post_id}.css";
		if ( file_exists( $upload_dir_path ) ) {
			wp_delete_file( $upload_dir_path );
		}
	}
}

```