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/**
 * @package Polylang
 */

/**
 * Setup features available on all admin pages.
 *
 * @since 1.8
 */
abstract class PLL_Admin_Base extends PLL_Base {
	/**
	 * Current language (used to filter the content).
	 *
	 * @var PLL_Language|null
	 */
	public $curlang;

	/**
	 * Language selected in the admin language filter.
	 *
	 * @var PLL_Language|null
	 */
	public $filter_lang;

	/**
	 * Preferred language to assign to new contents.
	 *
	 * @var PLL_Language|null
	 */
	public $pref_lang;

	/**
	 * @var PLL_Filters_Links|null
	 */
	public $filters_links;

	/**
	 * @var PLL_Admin_Links|null
	 */
	public $links;

	/**
	 * @var PLL_Admin_Notices|null
	 */
	public $notices;

	/**
	 * @var PLL_Admin_Static_Pages|null
	 */
	public $static_pages;

	/**
	 * @var PLL_Admin_Default_Term|null
	 */
	public $default_term;

	/**
	 * Setups actions needed on all admin pages.
	 *
	 * @since 1.8
	 *
	 * @param PLL_Links_Model $links_model Reference to the links model.
	 */
	public function __construct( &amp;$links_model ) {
		parent::__construct( $links_model );

		// Adds the link to the languages panel in the WordPress admin menu
		add_action( &#039;admin_menu&#039;, array( $this, &#039;add_menus&#039; ) );

		add_action( &#039;admin_menu&#039;, array( $this, &#039;remove_customize_submenu&#039; ) );

		// Setup js scripts and css styles
		add_action( &#039;admin_enqueue_scripts&#039;, array( $this, &#039;admin_enqueue_scripts&#039; ), 0 ); // High priority in case an ajax request is sent by an immediately invoked function

		add_action( &#039;customize_controls_enqueue_scripts&#039;, array( $this, &#039;customize_controls_enqueue_scripts&#039; ) );

		// Early instantiated to be able to correctly initialize language properties.
		$this-&gt;static_pages = new PLL_Admin_Static_Pages( $this );
		$this-&gt;model-&gt;set_languages_ready();
	}

	/**
	 * Setups filters and action needed on all admin pages and on plugins page
	 * Loads the settings pages or the filters base on the request
	 *
	 * @since 1.2
	 */
	public function init() {
		parent::init();

		$this-&gt;notices = new PLL_Admin_Notices( $this );

		$this-&gt;default_term = new PLL_Admin_Default_Term( $this );
		$this-&gt;default_term-&gt;add_hooks();

		if ( ! $this-&gt;model-&gt;has_languages() ) {
			return;
		}

		$this-&gt;links = new PLL_Admin_Links( $this ); // FIXME needed here ?
		$this-&gt;filters_links = new PLL_Filters_Links( $this ); // FIXME needed here ?

		// Filter admin language for users
		// We must not call user info before WordPress defines user roles in wp-settings.php
		add_action( &#039;setup_theme&#039;, array( $this, &#039;init_user&#039; ) );
		add_filter( &#039;request&#039;, array( $this, &#039;request&#039; ) );

		// Adds the languages in admin bar
		add_action( &#039;admin_bar_menu&#039;, array( $this, &#039;admin_bar_menu&#039; ), 100 ); // 100 determines the position
	}

	/**
	 * Adds the link to the languages panel in the WordPress admin menu
	 *
	 * @since 0.1
	 *
	 * @return void
	 */
	public function add_menus() {
		global $admin_page_hooks;

		// Prepare the list of tabs
		$tabs = array( &#039;lang&#039; =&gt; __( &#039;Languages&#039;, &#039;polylang&#039; ) );

		// Only if at least one language has been created
		if ( $this-&gt;model-&gt;has_languages() ) {
			$tabs[&#039;strings&#039;] = __( &#039;Translations&#039;, &#039;polylang&#039; );
		}

		$tabs[&#039;settings&#039;] = __( &#039;Settings&#039;, &#039;polylang&#039; );

		/**
		 * Filter the list of tabs in Polylang settings
		 *
		 * @since 1.5.1
		 *
		 * @param array $tabs list of tab names
		 */
		$tabs = apply_filters( &#039;pll_settings_tabs&#039;, $tabs );

		$parent = &#039;&#039;;

		foreach ( $tabs as $tab =&gt; $title ) {
			$page = &#039;lang&#039; === $tab ? &#039;mlang&#039; : &quot;mlang_$tab&quot;;
			if ( empty( $parent ) ) {
				$parent = $page;
				add_menu_page( $title, __( &#039;Languages&#039;, &#039;polylang&#039; ), &#039;manage_options&#039;, $page, &#039;__return_null&#039;, &#039;dashicons-translation&#039; );
				$admin_page_hooks[ $page ] = &#039;languages&#039;; // Hack to avoid the localization of the hook name. See: https://core.trac.wordpress.org/ticket/18857
			}

			add_submenu_page( $parent, $title, $title, &#039;manage_options&#039;, $page, array( $this, &#039;languages_page&#039; ) );
		}
	}

	/**
	 * Dummy method to display the 3 tabs pages: languages, strings translations, settings.
	 * Overwritten in `PLL_Settings`.
	 *
	 * @since 3.7
	 *
	 * @return void
	 */
	public function languages_page() {}

	/**
	 * Setup js scripts &amp; css styles ( only on the relevant pages )
	 *
	 * @since 0.6
	 *
	 * @return void
	 */
	public function admin_enqueue_scripts() {
		$suffix = defined( &#039;SCRIPT_DEBUG&#039; ) &amp;&amp; SCRIPT_DEBUG ? &#039;&#039; : &#039;.min&#039;;

		wp_enqueue_script( &#039;pll_admin&#039;, plugins_url( &quot;/js/build/admin{$suffix}.js&quot;, POLYLANG_ROOT_FILE ), array( &#039;jquery&#039; ), POLYLANG_VERSION, true );
		$inline_script = sprintf( &#039;let pll_admin = %s;&#039;, wp_json_encode( array( &#039;ajax_filter&#039; =&gt; $this-&gt;get_ajax_filter_data() ) ) );
		wp_add_inline_script( &#039;pll_admin&#039;, $inline_script, &#039;before&#039; );

		$screen = get_current_screen();
		if ( empty( $screen ) ) {
			return;
		}

		/*
		 * For each script:
		 * 0 =&gt; the pages on which to load the script
		 * 1 =&gt; the scripts it needs to work
		 * 2 =&gt; true if loaded even if languages have not been defined yet, false otherwise
		 * 3 =&gt; true if loaded in footer
		 */
		$scripts = array(
			&#039;user&#039;    =&gt; array( array( &#039;profile&#039;, &#039;user-edit&#039; ), array( &#039;jquery&#039; ), false, false ),
			&#039;widgets&#039; =&gt; array( array( &#039;widgets&#039; ), array( &#039;jquery&#039; ), false, false ),
		);

		$block_screens = array( &#039;widgets&#039;, &#039;site-editor&#039; );

		if ( ! empty( $screen-&gt;post_type ) &amp;&amp; $this-&gt;model-&gt;is_translated_post_type( $screen-&gt;post_type ) ) {
			$scripts[&#039;post&#039;] = array( array( &#039;edit&#039; ), array( &#039;jquery&#039;, &#039;wp-ajax-response&#039; ), false, true );

			// Classic editor.
			if ( ! method_exists( $screen, &#039;is_block_editor&#039; ) || ! $screen-&gt;is_block_editor() ) {
				$scripts[&#039;classic-editor&#039;] = array( array( &#039;post&#039;, &#039;media&#039;, &#039;async-upload&#039; ), array( &#039;jquery&#039;, &#039;wp-ajax-response&#039;, &#039;post&#039;, &#039;jquery-ui-dialog&#039;, &#039;wp-i18n&#039; ), false, true );
			}

			// Block editor with legacy metabox in WP 5.0+.
			$block_screens[] = &#039;post&#039;;
		}

		if ( $this-&gt;options[&#039;media_support&#039;] ) {
			$scripts[&#039;media&#039;] = array( array( &#039;upload&#039; ), array( &#039;jquery&#039; ), false, true );
		}

		if ( $this-&gt;is_block_editor( $screen ) ) {
			$scripts[&#039;block-editor&#039;] = array( $block_screens, array( &#039;jquery&#039;, &#039;wp-ajax-response&#039;, &#039;wp-api-fetch&#039;, &#039;jquery-ui-dialog&#039;, &#039;wp-i18n&#039; ), false, true );
		}

		if ( ! empty( $screen-&gt;taxonomy ) &amp;&amp; $this-&gt;model-&gt;is_translated_taxonomy( $screen-&gt;taxonomy ) ) {
			$scripts[&#039;term&#039;] = array( array( &#039;edit-tags&#039;, &#039;term&#039; ), array( &#039;jquery&#039;, &#039;wp-ajax-response&#039;, &#039;jquery-ui-autocomplete&#039; ), false, true );
		}

		foreach ( $scripts as $script =&gt; $v ) {
			if ( in_array( $screen-&gt;base, $v[0] ) &amp;&amp; ( $v[2] || $this-&gt;model-&gt;has_languages() ) ) {
				wp_enqueue_script( &quot;pll_{$script}&quot;, plugins_url( &quot;/js/build/{$script}{$suffix}.js&quot;, POLYLANG_ROOT_FILE ), $v[1], POLYLANG_VERSION, $v[3] );
				if ( &#039;classic-editor&#039; === $script || &#039;block-editor&#039; === $script ) {
					wp_set_script_translations( &quot;pll_{$script}&quot;, &#039;polylang&#039; );
				}
			}
		}

		wp_register_style( &#039;polylang_admin&#039;, plugins_url( &quot;/css/build/admin{$suffix}.css&quot;, POLYLANG_ROOT_FILE ), array( &#039;wp-jquery-ui-dialog&#039; ), POLYLANG_VERSION );
		wp_enqueue_style( &#039;polylang_dialog&#039;, plugins_url( &quot;/css/build/dialog{$suffix}.css&quot;, POLYLANG_ROOT_FILE ), array( &#039;polylang_admin&#039; ), POLYLANG_VERSION );

		$this-&gt;add_inline_scripts();
	}

	/**
	 * Tells whether or not the given screen is block editor kind.
	 * e.g. widget, site or post editor.
	 *
	 * @since 3.3
	 *
	 * @param WP_Screen $screen Screen object.
	 * @return bool True if the screen is a block editor, false otherwise.
	 */
	protected function is_block_editor( $screen ) {
		return method_exists( $screen, &#039;is_block_editor&#039; ) &amp;&amp; $screen-&gt;is_block_editor() &amp;&amp; ! pll_use_block_editor_plugin();
	}

	/**
	 * Enqueue scripts to the WP Customizer.
	 *
	 * @since 2.4.0
	 *
	 * @return void
	 */
	public function customize_controls_enqueue_scripts() {
		if ( $this-&gt;model-&gt;has_languages() ) {
			$suffix = defined( &#039;SCRIPT_DEBUG&#039; ) &amp;&amp; SCRIPT_DEBUG ? &#039;&#039; : &#039;.min&#039;;
			wp_enqueue_script( &#039;pll_widgets&#039;, plugins_url( &#039;/js/build/widgets&#039; . $suffix . &#039;.js&#039;, POLYLANG_ROOT_FILE ), array( &#039;jquery&#039; ), POLYLANG_VERSION, true );
			$this-&gt;add_inline_scripts();
		}
	}

	/**
	 * Adds inline scripts to set the default language in JS
	 * and localizes scripts.
	 *
	 * @since 3.3
	 *
	 * @return void
	 */
	private function add_inline_scripts() {
		if ( wp_script_is( &#039;pll_block-editor&#039;, &#039;enqueued&#039; ) ) {
			$default_lang_script = &#039;const pllDefaultLanguage = &quot;&#039; . $this-&gt;options[&#039;default_lang&#039;] . &#039;&quot;;&#039;;
			wp_add_inline_script(
				&#039;pll_block-editor&#039;,
				$default_lang_script,
				&#039;before&#039;
			);
		}
		if ( wp_script_is( &#039;pll_widgets&#039;, &#039;enqueued&#039; ) ) {
			wp_localize_script(
				&#039;pll_widgets&#039;,
				&#039;pll_widgets&#039;,
				array(
					&#039;flags&#039; =&gt; wp_list_pluck( $this-&gt;model-&gt;get_languages_list(), &#039;flag&#039;, &#039;slug&#039; ),
				)
			);
		}
	}

	/**
	 * Returns the data to use with the AJAX filter.
	 * The final goal is to detect if an ajax request is made on admin or frontend.
	 *
	 * Takes care to various situations:
	 * - When the AJAX request has no `options.data` thanks to ScreenfeedFr.
	 *   See: https://wordpress.org/support/topic/ajaxprefilter-may-not-work-as-expected.
	 * - When `options.data` is a JSON string.
	 *   See: https://wordpress.org/support/topic/polylang-breaking-third-party-ajax-requests-on-admin-panels.
	 * - When `options.data` is an empty string (GET request with the method &#039;load&#039;).
	 *   See: https://wordpress.org/support/topic/invalid-url-during-wordpress-new-dashboard-widget-operation.
	 *
	 * @since 3.7
	 *
	 * @return array
	 */
	public function get_ajax_filter_data(): array {
		global $post, $tag;

		$params = array( &#039;pll_ajax_backend&#039; =&gt; 1 );
		if ( $post instanceof WP_Post &amp;&amp; $this-&gt;model-&gt;post_types-&gt;is_translated( $post-&gt;post_type ) ) {
			$params[&#039;pll_post_id&#039;] = $post-&gt;ID;
		}

		if ( $tag instanceof WP_Term &amp;&amp; $this-&gt;model-&gt;taxonomies-&gt;is_translated( $tag-&gt;taxonomy ) ) {
			$params[&#039;pll_term_id&#039;] = $tag-&gt;term_id;
		}

		/**
		 * Filters the list of parameters to add to the admin ajax request.
		 *
		 * @since 3.4.5
		 *
		 * @param array $params List of parameters to add to the admin ajax request.
		 */
		return (array) apply_filters( &#039;pll_admin_ajax_params&#039;, $params );
	}

	/**
	 * Sets the admin current language, used to filter the content
	 *
	 * @since 2.0
	 *
	 * @return void
	 */
	public function set_current_language() {
		$this-&gt;curlang = $this-&gt;filter_lang;

		// Edit Post
		if ( isset( $_REQUEST[&#039;pll_post_id&#039;] ) &amp;&amp; $lang = $this-&gt;model-&gt;post-&gt;get_language( (int) $_REQUEST[&#039;pll_post_id&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			$this-&gt;curlang = $lang;
		} elseif ( &#039;post.php&#039; === $GLOBALS[&#039;pagenow&#039;] &amp;&amp; isset( $_GET[&#039;post&#039;] ) &amp;&amp; $this-&gt;model-&gt;is_translated_post_type( get_post_type( (int) $_GET[&#039;post&#039;] ) ) &amp;&amp; $lang = $this-&gt;model-&gt;post-&gt;get_language( (int) $_GET[&#039;post&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			$this-&gt;curlang = $lang;
		} elseif ( &#039;post-new.php&#039; === $GLOBALS[&#039;pagenow&#039;] &amp;&amp; ( empty( $_GET[&#039;post_type&#039;] ) || $this-&gt;model-&gt;is_translated_post_type( sanitize_key( $_GET[&#039;post_type&#039;] ) ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			$this-&gt;curlang = empty( $_GET[&#039;new_lang&#039;] ) ? $this-&gt;pref_lang : $this-&gt;model-&gt;get_language( sanitize_key( $_GET[&#039;new_lang&#039;] ) ); // phpcs:ignore WordPress.Security.NonceVerification
		}

		// Edit Term
		elseif ( isset( $_REQUEST[&#039;pll_term_id&#039;] ) &amp;&amp; $lang = $this-&gt;model-&gt;term-&gt;get_language( (int) $_REQUEST[&#039;pll_term_id&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			$this-&gt;curlang = $lang;
		} elseif ( in_array( $GLOBALS[&#039;pagenow&#039;], array( &#039;edit-tags.php&#039;, &#039;term.php&#039; ) ) &amp;&amp; isset( $_GET[&#039;taxonomy&#039;] ) &amp;&amp; $this-&gt;model-&gt;is_translated_taxonomy( sanitize_key( $_GET[&#039;taxonomy&#039;] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			if ( isset( $_GET[&#039;tag_ID&#039;] ) &amp;&amp; $lang = $this-&gt;model-&gt;term-&gt;get_language( (int) $_GET[&#039;tag_ID&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
				$this-&gt;curlang = $lang;
			} elseif ( ! empty( $_GET[&#039;new_lang&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
				$this-&gt;curlang = $this-&gt;model-&gt;get_language( sanitize_key( $_GET[&#039;new_lang&#039;] ) ); // phpcs:ignore WordPress.Security.NonceVerification
			} elseif ( empty( $this-&gt;curlang ) ) {
				$this-&gt;curlang = $this-&gt;pref_lang;
			}
		}

		// Ajax
		if ( wp_doing_ajax() &amp;&amp; ! empty( $_REQUEST[&#039;lang&#039;] ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			$this-&gt;curlang = $this-&gt;model-&gt;get_language( sanitize_key( $_REQUEST[&#039;lang&#039;] ) ); // phpcs:ignore WordPress.Security.NonceVerification
		}

		/**
		 * Filters the current language used by Polylang in the admin context.
		 *
		 * @since 3.2
		 *
		 * @param PLL_Language|false|null $curlang  Instance of the current language.
		 * @param PLL_Admin_Base          $polylang Instance of the main Polylang&#039;s object.
		 */
		$this-&gt;curlang = apply_filters( &#039;pll_admin_current_language&#039;, $this-&gt;curlang, $this );

		// Inform that the admin language has been set.
		if ( $this-&gt;curlang instanceof PLL_Language ) {
			/** This action is documented in frontend/choose-lang.php */
			do_action( &#039;pll_language_defined&#039;, $this-&gt;curlang-&gt;slug, $this-&gt;curlang );
		} else {
			/** This action is documented in include/class-polylang.php */
			do_action( &#039;pll_no_language_defined&#039; ); // To load overridden textdomains.
		}
	}

	/**
	 * Defines the backend language and the admin language filter based on user preferences
	 *
	 * @since 1.2.3
	 *
	 * @return void
	 */
	public function init_user() {
		// Language for admin language filter: may be empty
		// $_GET[&#039;lang&#039;] is numeric when editing a language, not when selecting a new language in the filter
		// We intentionally don&#039;t use a nonce to update the language filter
		if ( ! wp_doing_ajax() &amp;&amp; ! empty( $_GET[&#039;lang&#039;] ) &amp;&amp; ! is_numeric( sanitize_key( $_GET[&#039;lang&#039;] ) ) &amp;&amp; current_user_can( &#039;edit_user&#039;, $user_id = get_current_user_id() ) ) { // phpcs:ignore WordPress.Security.NonceVerification
			update_user_meta( $user_id, &#039;pll_filter_content&#039;, ( $lang = $this-&gt;model-&gt;get_language( sanitize_key( $_GET[&#039;lang&#039;] ) ) ) ? $lang-&gt;slug : &#039;&#039; ); // phpcs:ignore WordPress.Security.NonceVerification
		}

		$this-&gt;filter_lang = $this-&gt;model-&gt;get_language( get_user_meta( get_current_user_id(), &#039;pll_filter_content&#039;, true ) );

		// Set preferred language for use when saving posts and terms: must not be empty
		$this-&gt;pref_lang = empty( $this-&gt;filter_lang ) ? $this-&gt;model-&gt;get_default_language() : $this-&gt;filter_lang;

		/**
		 * Filters the preferred language on admin side.
		 * The preferred language is used for example to determine the language of a new post.
		 *
		 * @since 1.2.3
		 *
		 * @param PLL_Language $pref_lang Preferred language.
		 */
		$this-&gt;pref_lang = apply_filters( &#039;pll_admin_preferred_language&#039;, $this-&gt;pref_lang );

		$this-&gt;set_current_language();
	}

	/**
	 * Avoids parsing a tax query when all languages are requested
	 * Fixes https://wordpress.org/support/topic/notice-undefined-offset-0-in-wp-includesqueryphp-on-line-3877 introduced in WP 4.1
	 *
	 * @see https://core.trac.wordpress.org/ticket/31246 the suggestion of @boonebgorges.
	 *
	 * @since 1.6.5
	 *
	 * @param array $qvars The array of requested query variables.
	 * @return array
	 */
	public function request( $qvars ) {
		if ( isset( $qvars[&#039;lang&#039;] ) &amp;&amp; &#039;all&#039; === $qvars[&#039;lang&#039;] ) {
			unset( $qvars[&#039;lang&#039;] );
		}

		return $qvars;
	}

	/**
	 * Adds the languages list in admin bar for the admin languages filter.
	 *
	 * @since 0.9
	 *
	 * @param WP_Admin_Bar $wp_admin_bar WP_Admin_Bar global object.
	 * @return void
	 */
	public function admin_bar_menu( $wp_admin_bar ) {
		$all_item = (object) array(
			&#039;slug&#039; =&gt; &#039;all&#039;,
			&#039;name&#039; =&gt; __( &#039;Show all languages&#039;, &#039;polylang&#039; ),
			&#039;flag&#039; =&gt; &#039;&lt;span class=&quot;ab-icon&quot;&gt;&lt;/span&gt;&#039;,
		);

		$selected = empty( $this-&gt;filter_lang ) ? $all_item : $this-&gt;filter_lang;

		$title = sprintf(
			&#039;&lt;span class=&quot;ab-label&quot;%1$s&gt;&lt;span class=&quot;screen-reader-text&quot;&gt;%2$s&lt;/span&gt;%3$s&lt;/span&gt;&#039;,
			$selected instanceof PLL_Language ? sprintf( &#039; lang=&quot;%s&quot;&#039;, esc_attr( $selected-&gt;get_locale( &#039;display&#039; ) ) ) : &#039;&#039;,
			__( &#039;Filters content by language&#039;, &#039;polylang&#039; ),
			esc_html( $selected-&gt;name )
		);

		/**
		 * Filters the admin languages filter submenu items
		 *
		 * @since 2.6
		 *
		 * @param array $items The admin languages filter submenu items.
		 */
		$items = apply_filters( &#039;pll_admin_languages_filter&#039;, array_merge( array( $all_item ), $this-&gt;model-&gt;get_languages_list() ) );

		$menu = array(
			&#039;id&#039;    =&gt; &#039;languages&#039;,
			&#039;title&#039; =&gt; $selected-&gt;flag . $title,
			&#039;href&#039;  =&gt; esc_url( add_query_arg( &#039;lang&#039;, $selected-&gt;slug, remove_query_arg( &#039;paged&#039; ) ) ),
			&#039;meta&#039;  =&gt; array(
				&#039;title&#039; =&gt; __( &#039;Filters content by language&#039;, &#039;polylang&#039; ),
			),
		);

		if ( &#039;all&#039; !== $selected-&gt;slug ) {
			$menu[&#039;meta&#039;][&#039;class&#039;] = &#039;pll-filtered-languages&#039;;
		}

		if ( ! empty( $items ) ) {
			$wp_admin_bar-&gt;add_menu( $menu );
		}

		foreach ( $items as $lang ) {
			if ( $selected-&gt;slug === $lang-&gt;slug ) {
				continue;
			}

			$wp_admin_bar-&gt;add_menu(
				array(
					&#039;parent&#039; =&gt; &#039;languages&#039;,
					&#039;id&#039;     =&gt; $lang-&gt;slug,
					&#039;title&#039;  =&gt; $lang-&gt;flag . esc_html( $lang-&gt;name ),
					&#039;href&#039;   =&gt; esc_url( add_query_arg( &#039;lang&#039;, $lang-&gt;slug, remove_query_arg( &#039;paged&#039; ) ) ),
					&#039;meta&#039;   =&gt; &#039;all&#039; === $lang-&gt;slug ? array() : array( &#039;lang&#039; =&gt; esc_attr( $lang-&gt;get_locale( &#039;display&#039; ) ) ),
				)
			);
		}
	}

	/**
	 * Remove the customize submenu when using a block theme.
	 *
	 * WordPress removes the Customizer menu if a block theme is activated and no other plugins interact with it.
	 * As Polylang interacts with the Customizer, we have to delete this menu ourselves in the case of a block theme,
	 * unless another plugin than Polylang interacts with the Customizer.
	 *
	 * @since 3.2
	 *
	 * @return void
	 */
	public function remove_customize_submenu() {
		if ( ! $this-&gt;should_customize_menu_be_removed() ) {
			return;
		}

		global $submenu;

		if ( ! empty( $submenu[&#039;themes.php&#039;] ) ) {
			foreach ( $submenu[&#039;themes.php&#039;] as $submenu_item ) {
				if ( &#039;customize&#039; === $submenu_item[1] ) {
					remove_submenu_page( &#039;themes.php&#039;, $submenu_item[2] );
				}
			}
		}
	}
}
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