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✏️ Editing: style-manager.class.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // disable direct access
}

use ScssPhp\ScssPhp\Compiler;

if ( ! class_exists( 'Mega_Menu_Style_Manager' ) ) :

/**
	 *
	 */
	final class Mega_Menu_Style_Manager {

/**
		 *
		 */
		var $settings = array();

/**
		 * Constructor
		 *
		 * @since 1.0
		 */
		public function __construct() {
			$this->settings = get_option( 'megamenu_settings' );
		}

/**
		 * Setup actions
		 *
		 * @since 1.0
		 */
		public function setup_actions() {
			add_action( 'megamenu_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
			add_action( 'megamenu_enqueue_styles', array( $this, 'enqueue_styles' ) );

add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_styles' ) );
			add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ), 999 );
			add_action( 'wp_head', array( $this, 'head_css' ), 9999 );
			add_action( 'megamenu_delete_cache', array( $this, 'delete_cache' ) );
			add_action( 'megamenu_delete_cache', array( $this, 'clear_external_caches' ) );
			add_action( 'after_switch_theme', array( $this, 'delete_cache' ) );

add_action( 'megamenu_head_css', array( $this, 'head_css' ), 999 );

// PolyLang
			if ( function_exists( 'pll_current_language' ) ) {
				add_filter( 'megamenu_css_transient_key', array( $this, 'polylang_transient_key' ) );
				add_filter( 'megamenu_css_filename', array( $this, 'polylang_css_filename' ) );
				add_action( 'megamenu_after_delete_cache', array( $this, 'polylang_delete_cache' ) );
			} elseif ( defined( 'ICL_LANGUAGE_CODE' ) ) { // WPML
				add_filter( 'megamenu_css_transient_key', array( $this, 'wpml_transient_key' ) );
				add_filter( 'megamenu_css_filename', array( $this, 'wpml_css_filename' ) );
				add_action( 'megamenu_after_delete_cache', array( $this, 'wpml_delete_cache' ) );
			}

add_filter( 'megamenu_scripts_in_footer', array( $this, 'scripts_in_footer' ) );
			add_filter( "filesystem_method", array( $this, "use_direct_filesystem_method" ), 10, 4 );

}

/**
		 * Always use the 'direct' filesystem method when creating/removing the style.css file
		 * 
		 * @since 3.0.1
		 */
		public function use_direct_filesystem_method( $method, $args, $context, $allow_relaxed_file_ownership ) { 
			if ( $method != 'direct' && str_contains( $context, "/maxmegamenu" ) ) {
				return 'direct';
			}

return $method; 
		}

/**
		 * Determines whether to load JavaScript in footer or not, based on the configured option.
		 *
		 * @since 2.9
		 * @return bool
		 */
		function scripts_in_footer() {
			if ( isset( $this->settings['js'] ) && $this->settings['js'] == 'head' ) {
				return false;
			}

return true;
		}

/**
		 * Clear plugin caches when CSS is updated or menu settings are changed
		 */
		public function clear_external_caches() {
			// Breeze: https://wordpress.org/plugins/breeze/
			do_action( 'breeze_clear_all_cache' );
		}

/**
		 * Return the default menu theme
		 */
		public function get_default_theme() {
			return apply_filters(
				'megamenu_default_theme',
				array(
					'title'                                => __( 'Default', 'megamenu' ),
					'container_background_from'            => '#222',
					'container_background_to'              => '#222',
					'container_padding_left'               => '0px',
					'container_padding_right'              => '0px',
					'container_padding_top'                => '0px',
					'container_padding_bottom'             => '0px',
					'container_border_radius_top_left'     => '0px',
					'container_border_radius_top_right'    => '0px',
					'container_border_radius_bottom_left'  => '0px',
					'container_border_radius_bottom_right' => '0px',
					'arrow_up'                             => 'dash-f142',
					'arrow_down'                           => 'dash-f140',
					'arrow_left'                           => 'dash-f141',
					'arrow_right'                          => 'dash-f139',
					'font_size'                            => '14px', // deprecated
					'font_color'                           => '#666', // deprecated
					'font_family'                          => 'inherit', // deprecated
					'menu_item_align'                      => 'left',
					'menu_item_background_from'            => 'rgba(0,0,0,0)',
					'menu_item_background_to'              => 'rgba(0,0,0,0)',
					'menu_item_background_hover_from'      => '#333',
					'menu_item_background_hover_to'        => '#333',
					'menu_item_spacing'                    => '0px',
					'menu_item_link_font'                  => 'inherit',
					'menu_item_link_font_size'             => '14px',
					'menu_item_link_height'                => '40px',
					'menu_item_link_color'                 => '#ffffff',
					'menu_item_link_weight'                => 'normal',
					'menu_item_link_text_transform'        => 'none',
					'menu_item_link_text_decoration'       => 'none',
					'menu_item_link_text_align'            => 'left',
					'menu_item_link_color_hover'           => '#ffffff',
					'menu_item_link_weight_hover'          => 'normal',
					'menu_item_link_text_decoration_hover' => 'none',
					'menu_item_link_padding_left'          => '10px',
					'menu_item_link_padding_right'         => '10px',
					'menu_item_link_padding_top'           => '0px',
					'menu_item_link_padding_bottom'        => '0px',
					'menu_item_link_border_radius_top_left' => '0px',
					'menu_item_link_border_radius_top_right' => '0px',
					'menu_item_link_border_radius_bottom_left' => '0px',
					'menu_item_link_border_radius_bottom_right' => '0px',
					'menu_item_border_color'               => '#fff',
					'menu_item_border_left'                => '0px',
					'menu_item_border_right'               => '0px',
					'menu_item_border_top'                 => '0px',
					'menu_item_border_bottom'              => '0px',
					'menu_item_border_color_hover'         => '#fff',
					'menu_item_highlight_current'          => 'on',
					'menu_item_divider'                    => 'off',
					'menu_item_divider_color'              => 'rgba(255, 255, 255, 0.1)',
					'menu_item_divider_glow_opacity'       => '0.1',
					'panel_background_from'                => '#f1f1f1',
					'panel_background_to'                  => '#f1f1f1',
					'panel_width'                          => '100%',
					'panel_inner_width'                    => '100%',
					'panel_border_color'                   => '#fff',
					'panel_border_left'                    => '0px',
					'panel_border_right'                   => '0px',
					'panel_border_top'                     => '0px',
					'panel_border_bottom'                  => '0px',
					'panel_border_radius_top_left'         => '0px',
					'panel_border_radius_top_right'        => '0px',
					'panel_border_radius_bottom_left'      => '0px',
					'panel_border_radius_bottom_right'     => '0px',
					'panel_header_color'                   => '#555',
					'panel_header_text_transform'          => 'uppercase',
					'panel_header_text_align'              => 'left',
					'panel_header_font'                    => 'inherit',
					'panel_header_font_size'               => '16px',
					'panel_header_font_weight'             => 'bold',
					'panel_header_text_decoration'         => 'none',
					'panel_header_padding_top'             => '0px',
					'panel_header_padding_right'           => '0px',
					'panel_header_padding_bottom'          => '5px',
					'panel_header_padding_left'            => '0px',
					'panel_header_margin_top'              => '0px',
					'panel_header_margin_right'            => '0px',
					'panel_header_margin_bottom'           => '0px',
					'panel_header_margin_left'             => '0px',
					'panel_header_border_color'            => 'rgba(0,0,0,0)',
					'panel_header_border_color_hover'      => 'rgba(0,0,0,0)',
					'panel_header_border_left'             => '0px',
					'panel_header_border_right'            => '0px',
					'panel_header_border_top'              => '0px',
					'panel_header_border_bottom'           => '0px',
					'panel_padding_left'                   => '0px',
					'panel_padding_right'                  => '0px',
					'panel_padding_top'                    => '0px',
					'panel_padding_bottom'                 => '0px',
					'panel_widget_padding_left'            => '15px',
					'panel_widget_padding_right'           => '15px',
					'panel_widget_padding_top'             => '15px',
					'panel_widget_padding_bottom'          => '15px',
					'panel_font_size'                      => 'font_size',
					'panel_font_color'                     => 'font_color',
					'panel_font_family'                    => 'font_family',
					'panel_second_level_font_color'        => 'panel_header_color',
					'panel_second_level_font_color_hover'  => 'panel_header_color',
					'panel_second_level_text_transform'    => 'panel_header_text_transform',
					'panel_second_level_text_align'        => 'left',
					'panel_second_level_font'              => 'panel_header_font',
					'panel_second_level_font_size'         => 'panel_header_font_size',
					'panel_second_level_font_weight'       => 'panel_header_font_weight',
					'panel_second_level_font_weight_hover' => 'panel_header_font_weight',
					'panel_second_level_text_decoration'   => 'panel_header_text_decoration',
					'panel_second_level_text_decoration_hover' => 'panel_header_text_decoration',
					'panel_second_level_background_hover_from' => 'rgba(0,0,0,0)',
					'panel_second_level_background_hover_to' => 'rgba(0,0,0,0)',
					'panel_second_level_padding_left'      => '0px',
					'panel_second_level_padding_right'     => '0px',
					'panel_second_level_padding_top'       => '0px',
					'panel_second_level_padding_bottom'    => '0px',
					'panel_second_level_margin_left'       => '0px',
					'panel_second_level_margin_right'      => '0px',
					'panel_second_level_margin_top'        => '0px',
					'panel_second_level_margin_bottom'     => '0px',
					'panel_second_level_border_color'      => 'rgba(0,0,0,0)',
					'panel_second_level_border_color_hover' => 'rgba(0,0,0,0)',
					'panel_second_level_border_left'       => '0px',
					'panel_second_level_border_right'      => '0px',
					'panel_second_level_border_top'        => '0px',
					'panel_second_level_border_bottom'     => '0px',
					'panel_third_level_font_color'         => 'panel_font_color',
					'panel_third_level_font_color_hover'   => 'panel_font_color',
					'panel_third_level_text_transform'     => 'none',
					'panel_third_level_text_align'         => 'left',
					'panel_third_level_font'               => 'panel_font_family',
					'panel_third_level_font_size'          => 'panel_font_size',
					'panel_third_level_font_weight'        => 'normal',
					'panel_third_level_font_weight_hover'  => 'normal',
					'panel_third_level_text_decoration'    => 'none',
					'panel_third_level_text_decoration_hover' => 'none',
					'panel_third_level_background_hover_from' => 'rgba(0,0,0,0)',
					'panel_third_level_background_hover_to' => 'rgba(0,0,0,0)',
					'panel_third_level_padding_left'       => '0px',
					'panel_third_level_padding_right'      => '0px',
					'panel_third_level_padding_top'        => '0px',
					'panel_third_level_padding_bottom'     => '0px',
					'panel_third_level_margin_left'        => '0px',
					'panel_third_level_margin_right'       => '0px',
					'panel_third_level_margin_top'         => '0px',
					'panel_third_level_margin_bottom'      => '0px',
					'panel_third_level_border_color'       => 'rgba(0,0,0,0)',
					'panel_third_level_border_color_hover' => 'rgba(0,0,0,0)',
					'panel_third_level_border_left'        => '0px',
					'panel_third_level_border_right'       => '0px',
					'panel_third_level_border_top'         => '0px',
					'panel_third_level_border_bottom'      => '0px',
					'flyout_width'                         => '250px',
					'flyout_menu_background_from'          => '#f1f1f1',
					'flyout_menu_background_to'            => '#f1f1f1',
					'flyout_border_color'                  => '#ffffff',
					'flyout_border_left'                   => '0px',
					'flyout_border_right'                  => '0px',
					'flyout_border_top'                    => '0px',
					'flyout_border_bottom'                 => '0px',
					'flyout_border_radius_top_left'        => '0px',
					'flyout_border_radius_top_right'       => '0px',
					'flyout_border_radius_bottom_left'     => '0px',
					'flyout_border_radius_bottom_right'    => '0px',
					'flyout_menu_item_divider'             => 'off',
					'flyout_menu_item_divider_color'       => 'rgba(255, 255, 255, 0.1)',
					'flyout_padding_top'                   => '0px',
					'flyout_padding_right'                 => '0px',
					'flyout_padding_bottom'                => '0px',
					'flyout_padding_left'                  => '0px',
					'flyout_link_padding_left'             => '10px',
					'flyout_link_padding_right'            => '10px',
					'flyout_link_padding_top'              => '0px',
					'flyout_link_padding_bottom'           => '0px',
					'flyout_link_weight'                   => 'normal',
					'flyout_link_weight_hover'             => 'normal',
					'flyout_link_height'                   => '35px',
					'flyout_link_text_decoration'          => 'none',
					'flyout_link_text_decoration_hover'    => 'none',
					'flyout_background_from'               => '#f1f1f1',
					'flyout_background_to'                 => '#f1f1f1',
					'flyout_background_hover_from'         => '#dddddd',
					'flyout_background_hover_to'           => '#dddddd',
					'flyout_link_size'                     => 'font_size',
					'flyout_link_color'                    => 'font_color',
					'flyout_link_color_hover'              => 'font_color',
					'flyout_link_family'                   => 'font_family',
					'flyout_link_text_transform'           => 'none',
					'responsive_breakpoint'                => '768px',
					'responsive_text'                      => 'MENU', // deprecated
					'line_height'                          => '1.7',
					'z_index'                              => '999',
					'shadow'                               => 'off',
					'shadow_horizontal'                    => '0px',
					'shadow_vertical'                      => '0px',
					'shadow_blur'                          => '5px',
					'shadow_spread'                        => '0px',
					'shadow_color'                         => 'rgba(0, 0, 0, 0.1)',
					'transitions'                          => 'off',
					'keyboard_highlight_color'             => '#109cde',
					'keyboard_highlight_width'             => '3px',
					'keyboard_highlight_offset'            => '-3px',
					'resets'                               => 'off',
					'mobile_columns'                       => '1',
					'toggle_background_from'               => 'container_background_from',
					'toggle_background_to'                 => 'container_background_to',
					'toggle_font_color'                    => 'rgb(221, 221, 221)', // deprecated
					'toggle_bar_height'                    => '40px',
					'toggle_bar_border_radius_top_left'    => '2px',
					'toggle_bar_border_radius_top_right'   => '2px',
					'toggle_bar_border_radius_bottom_left' => '2px',
					'toggle_bar_border_radius_bottom_right' => '2px',
					'mobile_menu_padding_left'             => '0px',
					'mobile_menu_padding_right'            => '0px',
					'mobile_menu_padding_top'              => '0px',
					'mobile_menu_padding_bottom'           => '0px',
					'mobile_menu_item_height'              => '40px',
					'mobile_menu_overlay'                  => 'off',
					'mobile_menu_force_width'              => 'off',
					'mobile_menu_force_width_selector'     => 'body',
					'mobile_background_from'               => 'container_background_from',
					'mobile_background_to'                 => 'container_background_to',
					'mobile_menu_item_link_font_size'      => 'menu_item_link_font_size',
					'mobile_menu_item_link_color'          => 'menu_item_link_color',
					'mobile_menu_item_link_text_align'     => 'menu_item_link_text_align',
					'mobile_menu_item_link_color_hover'    => 'menu_item_link_color_hover',
					'mobile_menu_item_background_hover_from' => 'menu_item_background_hover_from',
					'mobile_menu_item_background_hover_to' => 'menu_item_background_hover_to',
					'mobile_menu_off_canvas_width'         => '300px',
					'disable_mobile_toggle'                => 'off',
					'custom_css'                           => '/** Push menu onto new line **/ 
#{$wrap} { 
    clear: both; 
}',
				)
			);
		}

/**
		 *
		 * @since 1.0
		 */
		public function default_themes() {

$themes['default'] = $this->get_default_theme();

return apply_filters( 'megamenu_themes', $themes );
		}

/**
		 * Merge the saved themes (from options table) into array of complete themes
		 *
		 * @since 2.1
		 */
		private function merge_in_saved_themes( $all_themes ) {

if ( $saved_themes = max_mega_menu_get_themes() ) {
				foreach ( $saved_themes as $key => $settings ) {
					if ( isset( $all_themes[ $key ] ) ) {
						// merge modifications to default themes
						$all_themes[ $key ] = array_merge( $all_themes[ $key ], $saved_themes[ $key ] );
					} else {
						// add in new themes
						$all_themes[ $key ] = $settings;
					}
				}
			}

return $all_themes;
		}

/**
		 * Populate all themes with all keys from the default theme
		 *
		 * @since 2.1
		 */
		private function ensure_all_themes_have_all_default_theme_settings( $all_themes ) {

$default_theme = $this->get_default_theme();

$themes = array();

foreach ( $all_themes as $theme_id => $theme ) {
				$themes[ $theme_id ] = array_merge( $default_theme, $theme );
			}

return $themes;
		}

/**
		 * For backwards compatibility, copy old settings into new values
		 *
		 * @since 2.1
		 */
		private function process_theme_replacements( $all_themes ) {

foreach ( $all_themes as $key => $settings ) {
				// process replacements
				foreach ( $settings as $var => $val ) {
					if ( ! is_array( $val ) && isset( $all_themes[ $key ][ $val ] ) ) {
						$all_themes[ $key ][ $var ] = $all_themes[ $key ][ $val ];
					}
				}
			}

return $all_themes;
		}

/**
		 * Return a filtered list of themes
		 *
		 * @since 1.0
		 * @return array
		 */
		public function get_themes() {

$default_themes = $this->default_themes();

$all_themes = $this->merge_in_saved_themes( $default_themes );
			$all_themes = $this->ensure_all_themes_have_all_default_theme_settings( $all_themes );
			$all_themes = $this->process_theme_replacements( $all_themes );

uasort( $all_themes, array( $this, 'sort_by_title' ) );

return $all_themes;
		}

/**
		 * Sorts a 2d array by the 'title' key
		 *
		 * @since 1.0
		 * @param array $a
		 * @param array $b
		 */
		private function sort_by_title( $a, $b ) {
			return strcmp( $a['title'], $b['title'] );
		}

/**
		 *
		 *
		 * @since 1.3.1
		 * @return bool
		 */
		private function is_debug_mode() {
			return ( defined( 'MEGAMENU_DEBUG' ) && MEGAMENU_DEBUG === true );
		}

/**
		 * Return the menu CSS for use in inline CSS block. Use the cache if possible.
		 *
		 * @since 1.3.1
		 */
		public function get_css() {

if ( ( $css = $this->get_cached_css() ) && ! $this->is_debug_mode() ) {
				return $css;
			} else {
				return $this->generate_css();
			}
		}

/**
		 * Generate and cache the CSS for our menus.
		 * The CSS is compiled by scssphp using the file located in /css/megamenu.scss
		 *
		 * @since 1.0
		 * @return string
		 * @param boolean $debug_mode (prints error messages to the CSS when enabled)
		 */
		public function generate_css() {

if ( function_exists( 'wp_raise_memory_limit' ) ) {
				wp_raise_memory_limit(); // attempt to raise memory limit to 256MB
			}

// the settings may have changed since the class was instantiated,
			// reset them here
			$this->settings = get_option( 'megamenu_settings' );

if ( ! $this->settings ) {
				return '/** CSS Generation Failed. No menu settings found **/';
			}

$css = '';

foreach ( $this->settings as $location => $settings ) {
				if ( isset( $settings['enabled'] ) && has_nav_menu( $location ) && ! $this->is_polylang_location( $location ) ) {
					$theme        = $this->get_theme_settings_for_location( $location );
					$menu_id      = $this->get_menu_id_for_location( $location );
					$compiled_css = $this->generate_css_for_location( $location, $theme, $menu_id );

if ( ! is_wp_error( $compiled_css ) ) {
						$css .= $compiled_css;
					}
				}
			}

if ( strlen( $css ) ) {
				$scss_location = 'core';

foreach ( $this->get_possible_scss_file_locations() as $path ) {
					if ( file_exists( $path ) && $path !== $this->get_default_scss_file_location() ) {
						$scss_location = 'custom';
					}
				}

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

$css .= ".wp-block {}"; // hack required for loading CSS in site editor https://github.com/WordPress/gutenberg/issues/40603#issuecomment-1112807162

$this->set_cached_css( $css );
				$this->save_to_filesystem( $css );
			}

return $css;
		}

/**
		 * 
		 */
		public function is_polylang_location( $location ) {
			return strpos( $location, '___' );
		}

/**
		 * Saves the generated CSS to the uploads folder
		 *
		 * @since 1.6.1
		 */
		private function save_to_filesystem( $css ) {
			global $wp_filesystem;

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

$upload_dir = wp_upload_dir();
			$filename   = $this->get_css_filename();

$dir = trailingslashit( $upload_dir['basedir'] ) . 'maxmegamenu/';

WP_Filesystem( false, $dir, true );

if ( ! $wp_filesystem->is_dir( $dir ) ) {
				$wp_filesystem->mkdir( $dir );
			}

if ( ! $wp_filesystem->put_contents( $dir . $filename, $css ) ) {
				// File write failed.
				// Update CSS output option to 'head' to stop us from attempting to regenerate the CSS on every request.

$method = $this->get_css_output_method();

if ( in_array( $method, array( 'disabled' ) ) ) {
					return;
				}

$settings        = get_option( 'megamenu_settings' );
				$settings['css'] = 'head';
				update_option( 'megamenu_settings', $settings );
				$this->settings = get_option( 'megamenu_settings' );

// set a far expiration date to prevent transient from being autoloaded
				$hundred_years_in_seconds = 3153600000;
				set_transient( 'megamenu_failed_to_write_css_to_filesystem', 'true', $hundred_years_in_seconds );
			}

}

/**
		 * Return an array of all the possible file path locations for the SCSS file
		 * @since 2.2.3
		 * @return array
		 */
		private function get_possible_scss_file_locations() {
			return apply_filters(
				'megamenu_scss_locations',
				array(
					trailingslashit( get_stylesheet_directory() ) . trailingslashit( 'megamenu' ) . 'megamenu.scss', // child theme
					trailingslashit( get_template_directory() ) . trailingslashit( 'megamenu' ) . 'megamenu.scss', // parent theme
					$this->get_default_scss_file_location(),
				)
			);
		}

/**
		 * Return the default SCSS file path
		 *
		 * @since 2.2.3
		 * @return string
		 */
		private function get_default_scss_file_location() {
			return MEGAMENU_PATH . trailingslashit( 'css' ) . 'megamenu.scss';
		}

/**
		 * Return the path to the megamenu.scss file, look for custom files before
		 * loading the core version.
		 *
		 * @since 1.0
		 * @return string
		 */
		private function load_scss_file() {

/**
			 *  *** IMPORTANT NOTICE ***
			 *
			 * Allowing users to create their own versions of megamenu.scss was a poor design decision.
			 *
			 * The bundled SCSS file and the plugin code work in perfect harmony.
			 *
			 * When a user (or theme developer) creates their own copy of megamenu.scss it
			 * _will_ become outdated as the plugin is updated and the menu HTML changes.
			 *
			 * Instead of using a custom SCSS file, override only the absolute minimum CSS in the
			 * Mega Menu > Menu Themes > Custom Styling section.
			 */
			$scss  = file_get_contents( MEGAMENU_PATH . trailingslashit( 'css' ) . 'mixin.scss' );
			$scss .= file_get_contents( MEGAMENU_PATH . trailingslashit( 'css' ) . 'reset.scss' );

$locations = $this->get_possible_scss_file_locations();

foreach ( $locations as $path ) {

if ( file_exists( $path ) ) {

$scss .= file_get_contents( $path );
					//break;
					//
					// @todo: add a break here. This is a known bug but some users may be relying on it.
					// Add warning message to plugin to alert users about not using custom megamenu.scss files
					// then fix the bug in a later release.
				}
			}

$scss .= file_get_contents( MEGAMENU_PATH . trailingslashit( 'css' ) . 'compatibility.scss' );

return apply_filters( 'megamenu_load_scss_file_contents', $scss );

}

/**
		 * Before a theme is saved, attempt to generate the CSS to ensure it passes as valid SCSS
		 *
		 * @param array $theme
		 */
		public function test_theme_compilation( $theme ) {
			$menu_id = 0;

$menus = get_registered_nav_menus();

if ( count( $menus ) ) {
				$locations = get_nav_menu_locations();

foreach ( $menus as $location => $description ) {
					if ( isset( $locations[ $location ] ) ) {
						$menu_id = $locations[ $location ];
						continue;
					}
				}
			}

return $this->generate_css_for_location( 'test', $theme, $menu_id );

}

/**
		 * Compiles raw SCSS into CSS for a particular menu location.
		 *
		 * @since 1.3
		 * @return mixed
		 * @param array $settings
		 * @param string $location
		 */
		public function generate_css_for_location( $location, $theme, $menu_id ) {
			if ( ( defined( 'MEGAMENU_PRO_VERSION' ) && version_compare( MEGAMENU_PRO_VERSION, '2.3.1' ) < 0 ) ||  ( defined( 'MEGAMENU_SCSS_COMPILER_COMPAT') && MEGAMENU_SCSS_COMPILER_COMPAT ) ) {
				// use old compiler when < Pro v2.3.1 is installed
				return $this->generate_css_for_location_old( $location, $theme, $menu_id );
			} else {
				return $this->generate_css_for_location_new( $location, $theme, $menu_id );
			}
		}

if ( is_readable( MEGAMENU_PATH . 'classes/scss/0.0.12/scss.inc.php' ) && ! class_exists( 'scssc' ) ) {
				include_once MEGAMENU_PATH . 'classes/scss/0.0.12/scss.inc.php';
			}

$scssc = new scssc();
			$scssc->setFormatter( 'scss_formatter' );

$import_paths = apply_filters(
				'megamenu_scss_import_paths',
				array(
					trailingslashit( get_stylesheet_directory() ) . trailingslashit( 'megamenu' ),
					trailingslashit( get_stylesheet_directory() ),
					trailingslashit( get_template_directory() ) . trailingslashit( 'megamenu' ),
					trailingslashit( get_template_directory() ),
					trailingslashit( WP_PLUGIN_DIR ),
				)
			);

foreach ( $import_paths as $path ) {
				$scssc->addImportPath( $path );
			}

try {
				return $scssc->compile( $this->get_complete_scss_for_location( $location, $theme, $menu_id ) );
			} catch ( Exception $e ) {
				$message = __( 'Warning: CSS compilation failed. Please check your changes or revert the theme.', 'megamenu' );

return new WP_Error( 'scss_compile_fail', $message . '<br /><br />' . $e->getMessage() );
			}

}

/**
		 * Compiles raw SCSS into CSS for a particular menu location.
		 *
		 * @since 3.3
		 * @return mixed
		 * @param array $settings
		 * @param string $location
		 */
		public function generate_css_for_location_new( $location, $theme, $menu_id ) {

if ( is_readable( MEGAMENU_PATH . 'classes/scss/1.11.1/scss.inc.php' ) && ! class_exists( 'scssc' ) ) {
				require_once MEGAMENU_PATH . 'classes/scss/1.11.1/scss.inc.php';
			}

$scssc = new Compiler();

foreach ( $import_paths as $path ) {
				$scssc->addImportPath( $path );
			}

try {
				if ( method_exists( $scssc, "compileString" ) ) {
					return $scssc->compileString( $this->get_complete_scss_for_location( $location, $theme, $menu_id ) )->getCss();
				} else if ( method_exists( $scssc, "compile" ) ) { // using an older version of scssphp from a different plugin
					return $scssc->compile( $this->get_complete_scss_for_location( $location, $theme, $menu_id ) );
				}
			} catch ( Exception $e ) {
				$message = __( 'Warning: CSS compilation failed. Please check your changes or revert the theme.', 'megamenu' );

return new WP_Error( 'scss_compile_fail', $message . '<br /><br />' . $e->getMessage() );
			}

}

/**
		 * Generates a SCSS string which includes the variables for a menu theme,
		 * for a particular menu location.
		 *
		 * @since 1.3
		 * @return string
		 * @param string $theme
		 * @param string $location
		 * @param int $menu_id
		 */
		private function get_complete_scss_for_location( $location, $theme, $menu_id ) {

$sanitized_location = str_replace( apply_filters( 'megamenu_location_replacements', array( '-', ' ' ) ), '-', $location );

$wrap_selector = apply_filters( 'megamenu_scss_wrap_selector', "#mega-menu-wrap-{$sanitized_location}", $menu_id, $location );
			$menu_selector = apply_filters( 'megamenu_scss_menu_selector', "#mega-menu-{$sanitized_location}", $menu_id, $location );

$vars['date']                 = "'" . date( 'l jS F Y H:i:s e' ) . "'";
			$vars['time']                 = "'" . time() . "'";
			$vars['wrap']                 = "'$wrap_selector'";
			$vars['menu']                 = "'$menu_selector'";
			$vars['location']             = "'$sanitized_location'";
			$vars['menu_id']              = "'$menu_id'";
			$vars['elementor_pro_active'] = 'false';
			$vars['arrow_font']           = 'dashicons';
			$vars['arrow_font_weight']    = 'normal';
			$vars['arrow_combinator']     = "'>'";

if ( defined('MEGAMENU_EXPERIMENTAL_TABBABLE_ARROW') && MEGAMENU_EXPERIMENTAL_TABBABLE_ARROW ) {
				$vars['arrow_combinator'] = "'+'";
			}

$current_theme = wp_get_theme();
			$theme_id      = $current_theme->template;

$vars['wp_theme'] = strtolower( str_replace( array( '.', ' ' ), '_', $theme_id ) );

if ( empty( $vars['wp_theme'] ) ) {
				$vars['wp_theme'] = 'unknown';
			}

if ( ! function_exists( 'is_plugin_active' ) ) {
				include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
			}

if ( function_exists( 'is_plugin_active' ) && is_plugin_active( 'elementor-pro/elementor-pro.php' ) ) {
				$vars['elementor_pro_active'] = 'true';
			}

$settings = $this->get_menu_settings_for_location( $location );

if ( isset( $settings['effect_speed'] ) && absint( $settings['effect_speed'] ) > 0 ) {
				$effect_speed = absint( $settings['effect_speed'] ) . 'ms';
			} else {
				$effect_speed = '200ms';
			}

$vars['effect_speed'] = $effect_speed;

if ( isset( $settings['effect_speed_mobile'] ) && absint( $settings['effect_speed_mobile'] ) > 0 ) {
				$effect_speed_mobile = absint( $settings['effect_speed_mobile'] ) . 'ms';
			} else {
				$effect_speed_mobile = '200ms';
			}

$vars['effect_speed_mobile'] = $effect_speed_mobile;

if ( isset( $settings['effect_mobile'] ) ) {
				$effect_mobile = $settings['effect_mobile'];
			} else {
				$effect_mobile = 'disabled';
			}

$vars['effect_mobile'] = $effect_mobile;

foreach ( $theme as $name => $value ) {

if ( in_array( $name, array( 'arrow_up', 'arrow_down', 'arrow_left', 'arrow_right' ) ) ) {

$parts = explode( '-', $value );
					$code  = end( $parts );

$arrow_icon = $code == 'disabled' ? "''" : "'\\" . $code . "'";

$vars[ $name ] = $arrow_icon;

continue;
				}

if ( in_array( $name, array( 'menu_item_link_font', 'panel_font_family', 'panel_header_font', 'panel_second_level_font', 'panel_third_level_font', 'panel_third_level_font', 'flyout_link_family', 'tabbed_link_family' ) ) ) {

$vars[ $name ] = "'" . stripslashes( htmlspecialchars_decode( $value ) ) . "'";

// find font names that end with/contain a number, e.g. Baloo 2, and add extra quotes so that they still retain quotes when CSS is compiled.
					$font_name_with_single_quotes = $vars[ $name ];
					$font_name_with_no_quotes = str_replace( "'", "", $font_name_with_single_quotes );
					$font_name_parts = explode( " ", $font_name_with_no_quotes );

if ( is_array( $font_name_parts) ) {
						foreach ( $font_name_parts as $part ) {
							if ( is_numeric ($part) ) {
								$vars[ $name ] = "\"{$font_name_with_single_quotes}\"";
								continue;
							}
						}
					}

continue;
				}

if ( in_array( $name, array( 'responsive_text' ) ) ) {

if ( strlen( $value ) ) {
						$vars[ $name ] = "'" . do_shortcode( $value ) . "'";
					} else {
						$vars[ $name ] = "''";
					}

continue;
				}

if ( in_array( $name, array( 'panel_width', 'panel_inner_width', 'mobile_menu_force_width_selector' ) ) ) {
					if ( preg_match( '/^\d/', $value ) !== 1 ) { // doesn't start with number (jQuery selector)
						$vars[ $name ] = '100%';
						continue;
					}
				}

if ( $name != 'custom_css' ) {
					$vars[ $name ] = $value;
				}
			}

// Non-standard characters in the title will break CSS compilation, unset it here as it's not needed.
			if ( isset( $vars['title'] ) ) {
				unset( $vars['title'] );
			}

$vars = apply_filters( 'megamenu_scss_variables', $vars, $location, $theme, $menu_id, $this->get_theme_id_for_location( $location ) );

$scss = '';

foreach ( $vars as $name => $value ) {
				$scss .= '$' . $name . ': ' . $value . ";\n";
			}

$scss .= $this->load_scss_file();

$scss .= stripslashes( html_entity_decode( $theme['custom_css'], ENT_QUOTES ) );

return apply_filters( 'megamenu_scss', $scss, $location, $theme, $menu_id );

}

/**
		 * Returns the menu ID for a specified menu location, defaults to 0
		 *
		 * @since 1.3
		 */
		private function get_menu_id_for_location( $location ) {
			$locations = get_nav_menu_locations();
			$menu_id   = isset( $locations[ $location ] ) ? $locations[ $location ] : 0;

return $menu_id;
		}

/**
		 * Returns the theme ID for a specified menu location, defaults to 'default'
		 *
		 * @since 2.1
		 */
		private function get_theme_id_for_location( $location ) {
			$settings = $this->settings;
			$theme_id = isset( $settings[ $location ]['theme'] ) ? $settings[ $location ]['theme'] : 'default';

return $theme_id;
		}

/**
		 * Returns the theme settings for a specified location. Defaults to the default theme.
		 *
		 * @since 1.3
		 */
		private function get_theme_settings_for_location( $location ) {
			$theme_id       = $this->get_theme_id_for_location( $location );
			$all_themes     = $this->get_themes();
			$theme_settings = isset( $all_themes[ $theme_id ] ) ? $all_themes[ $theme_id ] : $all_themes['default'];

return $theme_settings;
		}

/**
		 * Returns the menu settings for a specified location.
		 *
		 * @since 2.2
		 */
		private function get_menu_settings_for_location( $location ) {
			$settings          = $this->settings;
			$location_settings = isset( $settings[ $location ] ) ? $settings[ $location ] : array();
			return $location_settings;
		}

/**
		 * Enqueue public CSS and JS files required by Mega Menu
		 *
		 * @since 1.0
		 */
		public function enqueue_styles() {
			if ( 'fs' === $this->get_css_output_method() ) {
				$this->enqueue_fs_style();
			}

wp_enqueue_style( 'dashicons' );

do_action( 'megamenu_enqueue_public_scripts' );

}

/**
		 * Enqueue public CSS and JS files required by Mega Menu
		 *
		 * @since 1.0
		 */
		public function enqueue_scripts() {
			$js_path = MEGAMENU_BASE_URL . 'js/maxmegamenu.js';

$dependencies = apply_filters( 'megamenu_javascript_dependencies', array( 'jquery', 'hoverIntent' ) );

$scripts_in_footer = apply_filters( 'megamenu_scripts_in_footer', true );

if ( defined( 'MEGAMENU_SCRIPTS_IN_FOOTER' ) ) {
				$scripts_in_footer = MEGAMENU_SCRIPTS_IN_FOOTER;
			}

///** change the script handle to prevent conflict with theme files */
			//function megamenu_script_handle() {
			//    return "maxmegamenu";
			//}
			//add_filter("megamenu_javascript_handle", "megamenu_script_handle");*/
			$handle = apply_filters( 'megamenu_javascript_handle', 'megamenu' );

wp_enqueue_script( $handle, $js_path, $dependencies, MEGAMENU_VERSION, $scripts_in_footer );

// @todo: remove the following code in future update. Only here to prevent JS errors for users with
			// cached versions of maxmegamenu.js
			$params = apply_filters(
				'megamenu_javascript_localisation',
				array(
					'timeout'  => 300,
					'interval' => 100,
				)
			);

wp_localize_script( $handle, 'megamenu', $params );
		}

/**
		 * Enqueue the stylesheet held on the filesystem.
		 *
		 * @since 1.6.1
		 */
		public function enqueue_fs_style() {

$upload_dir = wp_upload_dir();

$filename = $this->get_css_filename();

$filepath = trailingslashit( $upload_dir['basedir'] ) . 'maxmegamenu/' . $filename;

if ( ! is_file( $filepath ) || $this->is_debug_mode() ) {
				// regenerate the CSS and save to filesystem.
				$this->generate_css();
			}

// file should now exist.
			if ( is_file( $filepath ) ) {

$css_url = trailingslashit( $upload_dir['baseurl'] ) . 'maxmegamenu/' . $filename;

$protocol = is_ssl() ? 'https://' : 'http://';

// ensure we're using the correct protocol.
				$css_url = str_replace( array( 'http://', 'https://' ), $protocol, $css_url );

wp_enqueue_style( 'megamenu', $css_url, false, substr( md5( filemtime( $filepath ) ), 0, 6 ) );

}

/**
		 *
		 * @since 1.6.1
		 */
		private function set_cached_css( $css ) {
			// set a far expiration date to prevent transient from being autoloaded.
			$hundred_years_in_seconds = 3153600000;

set_transient( $this->get_transient_key(), $css, $hundred_years_in_seconds );
			set_transient( 'megamenu_css_version', MEGAMENU_VERSION, $hundred_years_in_seconds );
			set_transient( 'megamenu_css_last_updated', time(), $hundred_years_in_seconds );
		}

/**
		 * Return the cached css if it exists
		 *
		 * @since 1.9
		 * @return mixed
		 */
		private function get_cached_css() {
			return get_transient( $this->get_transient_key() );
		}

/**
		 * Delete the cached CSS
		 *
		 * @since 1.9
		 * @return mixed
		 */
		public function delete_cache() {
			global $wp_filesystem;

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

$upload_dir = wp_upload_dir();
			$filename   = $this->get_css_filename();
			$dir        = trailingslashit( $upload_dir['basedir'] ) . 'maxmegamenu/';

WP_Filesystem( false, $dir, true );
			$wp_filesystem->rmdir( $dir, true );

delete_transient( $this->get_transient_key() );

$this->generate_css();

do_action( 'megamenu_after_delete_cache' );

return true;

}

/**
		 * Return the key to use for the CSS transient
		 *
		 * @since 1.9
		 * @return string
		 */
		private function get_transient_key() {
			return apply_filters( 'megamenu_css_transient_key', 'megamenu_css' );
		}

/**
		 * Return the filename to use for the stylesheet, ensuring the filename is unique
		 * for multi site setups
		 *
		 * @since 1.6.1
		 */
		public function get_css_filename() {
			return apply_filters( 'megamenu_css_filename', 'style' ) . '.css';
		}

/**
		 * Return the CSS output method, default to filesystem
		 *
		 * @return string
		 */
		private function get_css_output_method() {
			return isset( $this->settings['css'] ) ? $this->settings['css'] : 'fs';
		}

/**
		 * Print CSS to <head>
		 *
		 * @since 1.3.1
		 */
		public function head_css() {

$method = $this->get_css_output_method();

if ( in_array( $method, array( 'disabled', 'fs' ) ) ) {
				echo "<style type=\"text/css\">/** Mega Menu CSS: {$method} **/</style>\n";
				return;
			}

$css = $this->get_css();

echo '<style type="text/css">' . str_replace( array( '  ', "\n" ), '', $css ) . "</style>\n";

}

/**
		 * Delete language specific transients created when PolyLang is installed
		 *
		 * @since 1.9
		 */
		public function polylang_delete_cache() {
			global $polylang;

foreach ( $polylang->model->get_languages_list() as $term ) {
				delete_transient( 'megamenu_css_' . $term->locale );
			}
		}

/**
		 * Modify the CSS transient key to make it unique to the current language
		 *
		 * @since 1.9
		 * @return string
		 */
		public function polylang_transient_key( $key ) {

$locale = strtolower( pll_current_language( 'locale' ) );

if ( strlen( $locale ) ) {
				$key = $key . '_' . $locale;
			}

return $key;
		}

/**
		 * Modify the CSS filename to make it unique to the current language
		 *
		 * @since 1.9
		 * @return string
		 */
		public function polylang_css_filename( $filename ) {

$locale = strtolower( pll_current_language( 'locale' ) );

if ( strlen( $locale ) ) {
				$filename .= '_' . $locale;
			}

return $filename;
		}

/**
		 * Delete language specific transients created when WPML is installed
		 *
		 * @since 1.9
		 */
		public function wpml_delete_cache() {

$languages = icl_get_languages( 'skip_missing=N' );

foreach ( $languages as $language ) {
				delete_transient( 'megamenu_css_' . $language['language_code'] );
			}
		}

/**
		 * Modify the CSS transient key to make it unique to the current language
		 *
		 * @since 1.9
		 * @return string
		 */
		public function wpml_transient_key( $key ) {
			$key .= '_' . ICL_LANGUAGE_CODE;

return $key;
		}

/**
		 * Modify the CSS filename to make it unique to the current language
		 *
		 * @since 1.9
		 * @return string
		 */
		public function wpml_css_filename( $filename ) {
			$filename .= '_' . ICL_LANGUAGE_CODE;

return $filename;
		}
	}

endif;

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