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wp-content/plugins/polylang-pro/vendor/wpsyntex/polylang/include/nav-menu.php

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+<?php
+/**
+ * @package Polylang
+ */
+
+/**
+ * Manages custom menus translations
+ * Common to admin and frontend for the customizer
+ *
+ * @since 1.7.7
+ */
+class PLL_Nav_Menu {
+	/**
+	 * Stores the plugin options.
+	 *
+	 * @var array
+	 */
+	public $options;
+
+	/**
+	 * @var PLL_Model
+	 */
+	public $model;
+
+	/**
+	 * Theme name.
+	 *
+	 * @var string
+	 */
+	protected $theme;
+
+	/**
+	 * Array of menu ids in a given language used when auto add pages to menus.
+	 *
+	 * @var int[]
+	 */
+	protected $auto_add_menus = array();
+
+	/**
+	 * Constructor: setups filters and actions.
+	 *
+	 * @since 1.7.7
+	 *
+	 * @param object $polylang The Polylang object.
+	 */
+	public function __construct( &$polylang ) {
+		$this->model = &$polylang->model;
+		$this->options = &$polylang->options;
+
+		$this->theme = get_option( 'stylesheet' );
+
+		add_filter( 'wp_setup_nav_menu_item', array( $this, 'wp_setup_nav_menu_item' ) );
+
+		// Integration with WP customizer
+		add_action( 'customize_register', array( $this, 'create_nav_menu_locations' ), 5 );
+
+		// Filter _wp_auto_add_pages_to_menu by language
+		add_action( 'transition_post_status', array( $this, 'auto_add_pages_to_menu' ), 5, 3 ); // before _wp_auto_add_pages_to_menu
+	}
+
+	/**
+	 * Assigns the title and label to the language switcher menu items
+	 *
+	 * @since 2.6
+	 *
+	 * @param stdClass $item Menu item.
+	 * @return stdClass
+	 */
+	public function wp_setup_nav_menu_item( $item ) {
+		if ( isset( $item->url ) && '#pll_switcher' === $item->url ) {
+			$item->post_title = __( 'Languages', 'polylang' );
+			$item->type_label = __( 'Language switcher', 'polylang' );
+		}
+		return $item;
+	}
+
+	/**
+	 * Create temporary nav menu locations ( one per location and per language ) for all non-default language
+	 * to do only one time
+	 *
+	 * @since 1.2
+	 *
+	 * @return void
+	 */
+	public function create_nav_menu_locations() {
+		static $once;
+		global $_wp_registered_nav_menus;
+
+		$arr = array();
+
+		if ( isset( $_wp_registered_nav_menus ) && ! $once ) {
+			foreach ( $_wp_registered_nav_menus as $loc => $name ) {
+				foreach ( $this->model->get_languages_list() as $lang ) {
+					$arr[ $this->combine_location( $loc, $lang ) ] = $name . ' ' . $lang->name;
+				}
+			}
+
+			$_wp_registered_nav_menus = $arr;
+			$once = true;
+		}
+	}
+
+	/**
+	 * Creates a temporary nav menu location from a location and a language
+	 *
+	 * @since 1.8
+	 *
+	 * @param string       $loc  Nav menu location.
+	 * @param PLL_Language $lang Language object.
+	 * @return string
+	 */
+	public function combine_location( $loc, $lang ) {
+		return $loc . ( strpos( $loc, '___' ) || $lang->is_default ? '' : '___' . $lang->slug );
+	}
+
+	/**
+	 * Get nav menu locations and language from a temporary location.
+	 *
+	 * @since 1.8
+	 *
+	 * @param string $loc Temporary location.
+	 * @return string[] {
+	 *   @type string $location Nav menu location.
+	 *   @type string $lang     Language code.
+	 * }
+	 */
+	public function explode_location( $loc ) {
+		$infos = explode( '___', $loc );
+		if ( 1 == count( $infos ) ) {
+			$infos[] = $this->options['default_lang'];
+		}
+		return array_combine( array( 'location', 'lang' ), $infos );
+	}
+
+	/**
+	 * Filters the option nav_menu_options for auto added pages to menu.
+	 *
+	 * @since 0.9.4
+	 *
+	 * @param array $options Options stored in the option nav_menu_options.
+	 * @return array Modified options.
+	 */
+	public function nav_menu_options( $options ) {
+		$options['auto_add'] = array_intersect( $options['auto_add'], $this->auto_add_menus );
+		return $options;
+	}
+
+	/**
+	 * Filters _wp_auto_add_pages_to_menu by language.
+	 *
+	 * @since 0.9.4
+	 *
+	 * @param string  $new_status Transition to this post status.
+	 * @param string  $old_status Previous post status.
+	 * @param WP_Post $post       Post object.
+	 * @return void
+	 */
+	public function auto_add_pages_to_menu( $new_status, $old_status, $post ) {
+		if ( 'publish' != $new_status || 'publish' == $old_status || 'page' != $post->post_type || ! empty( $post->post_parent ) ) {
+			return;
+		}
+
+		if ( ! empty( $this->options['nav_menus'][ $this->theme ] ) ) {
+			$lang = $this->model->post->get_language( $post->ID );
+			$lang = empty( $lang ) ? $this->options['default_lang'] : $lang->slug; // If the page has no language yet, the default language will be assigned
+
+			// Get all the menus in the page language
+			foreach ( $this->options['nav_menus'][ $this->theme ] as $loc ) {
+				if ( ! empty( $loc[ $lang ] ) ) {
+					$this->auto_add_menus[] = $loc[ $lang ];
+				}
+			}
+
+			add_filter( 'option_nav_menu_options', array( $this, 'nav_menu_options' ) );
+		}
+	}
+}