Snippet to output Impreza theme page block along with internal element CSS

impreza-pageblock-css.php

<?php

// Example usage: [custom_page_block id="55"]

add_shortcode( 'custom_page_block', 'custom_page_block' );
function custom_page_block( $atts ) {
	
	// Attributes 
	$atts = shortcode_atts(
		array(
			'id'	=> ''
		), $atts);
	
	$the_ID = $atts['id'];
	
	global $items_jsoncss_collection;
	if ( ! $items_jsoncss_collection ) {
		$items_jsoncss_collection = array();
	}

	if ( $jsoncss_data = get_post_meta( $the_ID, '_us_jsoncss_data', TRUE ) ) {
		if ( ! empty( $jsoncss_data ) AND is_array( $jsoncss_data ) ) {
			foreach ( $jsoncss_data as $jsoncss ) {
				if ( ! empty( $jsoncss ) AND is_string( $jsoncss ) ) {
					$class_name = us_get_design_css_class( $jsoncss );
					$jsoncss = rawurldecode( $jsoncss );
					if ( $jsoncss AND $jsoncss = json_decode( $jsoncss, TRUE ) ) {
						foreach ( array( 'default', 'tablets', 'mobiles' ) as $device_type ) {
							if ( $css_options = us_arr_path( $jsoncss, $device_type, FALSE ) ) {
								if ( ! empty( $items_jsoncss_collection[ $device_type ] ) AND in_array( $class_name, $items_jsoncss_collection[ $device_type ] ) ) {
									continue;
								}
								$css_options = apply_filters( 'us_output_design_css_options', $css_options, $device_type );
								$items_jsoncss_collection[ $device_type ][ $class_name ] = $css_options;
							}
						}
					}
				}
			}
		}
	}

	$output = do_shortcode( '[us_page_block id="' . $the_ID . '" remove_rows="1"]' );

	if ( ! empty( $items_jsoncss_collection ) AND $items_custom_css = us_jsoncss_compile( $items_jsoncss_collection ) ) {
		$output .= '<style id="shortcode-css">' . $items_custom_css . '</style>';
	}

	return $output;
}

?>