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<?php |
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/** |
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* @package Polylang |
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*/ |
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|
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/** |
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* Manages custom menus translations as well as the language switcher menu item on admin side |
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* |
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* @since 1.2 |
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*/ |
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class PLL_Admin_Nav_Menu extends PLL_Nav_Menu { |
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|
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/** |
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* Constructor: setups filters and actions |
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* |
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* @since 1.2 |
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* |
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* @param PLL_Admin $polylang The Polylang object. |
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*/ |
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public function __construct( &$polylang ) { |
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parent::__construct( $polylang ); |
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|
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// Populates nav menus locations |
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// Since WP 4.4, must be done before customize_register is fired |
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add_filter( 'theme_mod_nav_menu_locations', array( $this, 'theme_mod_nav_menu_locations' ), 20 ); |
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|
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// Integration in the WP menu interface. |
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add_action( 'admin_init', array( $this, 'admin_init' ) ); // after Polylang upgrade. |
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add_action( 'load-nav-menus.php', array( $this, 'add_meta_box' ) ); |
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} |
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|
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/** |
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* Setups filters and terms and create new nav menu locations. |
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* |
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* @since 1.1 |
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* |
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* @return void |
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*/ |
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public function admin_init() { |
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add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) ); |
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add_action( 'wp_update_nav_menu_item', array( $this, 'wp_update_nav_menu_item' ), 10, 2 ); |
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|
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// Translation of menus based on chosen locations. |
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add_filter( 'pre_update_option_theme_mods_' . $this->theme, array( $this, 'pre_update_option_theme_mods' ) ); |
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add_action( 'delete_nav_menu', array( $this, 'delete_nav_menu' ) ); |
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|
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$this->create_nav_menu_locations(); |
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} |
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|
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/** |
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* Adds the language switcher metabox. |
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* |
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* @since 3.7.7 |
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* |
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* @return void |
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*/ |
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public function add_meta_box() { |
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// FIXME not displayed if Polylang is activated before the first time the user goes to nav menus http://core.trac.wordpress.org/ticket/16828 |
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add_meta_box( 'pll_lang_switch_box', __( 'Language switcher', 'polylang' ), array( $this, 'lang_switch' ), 'nav-menus', 'side', 'high' ); |
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} |
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|
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/** |
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* Language switcher metabox |
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* The checkbox and all hidden fields are important |
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* Thanks to John Morris for his very interesting post http://www.johnmorrisonline.com/how-to-add-a-fully-functional-custom-meta-box-to-wordpress-navigation-menus/ |
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* |
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* @since 1.1 |
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* |
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* @return void |
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*/ |
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public function lang_switch() { |
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global $_nav_menu_placeholder, $nav_menu_selected_id; |
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$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1; |
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?> |
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<div id="posttype-lang-switch" class="posttypediv"> |
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<div id="tabs-panel-lang-switch" class="tabs-panel tabs-panel-active"> |
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<ul id="lang-switch-checklist" class="categorychecklist form-no-clear"> |
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<li> |
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<label class="menu-item-title"> |
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<input type="checkbox" class="menu-item-checkbox" name="menu-item[<?php echo (int) $_nav_menu_placeholder; ?>][menu-item-object-id]" value="-1"> <?php esc_html_e( 'Languages', 'polylang' ); ?> |
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</label> |
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<input type="hidden" class="menu-item-type" name="menu-item[<?php echo (int) $_nav_menu_placeholder; ?>][menu-item-type]" value="custom"> |
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<input type="hidden" class="menu-item-title" name="menu-item[<?php echo (int) $_nav_menu_placeholder; ?>][menu-item-title]" value="<?php esc_attr_e( 'Languages', 'polylang' ); ?>"> |
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<input type="hidden" class="menu-item-url" name="menu-item[<?php echo (int) $_nav_menu_placeholder; ?>][menu-item-url]" value="#pll_switcher"> |
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</li> |
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</ul> |
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</div> |
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<p class="button-controls"> |
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<span class="add-to-menu"> |
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<input type="submit" <?php disabled( $nav_menu_selected_id, 0 ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu', 'polylang' ); ?>" name="add-post-type-menu-item" id="submit-posttype-lang-switch"> |
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<span class="spinner"></span> |
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</span> |
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</p> |
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</div> |
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<?php |
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} |
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|
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/** |
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* Prepares javascript to modify the language switcher menu item |
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* |
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* @since 1.1 |
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* |
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* @return void |
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*/ |
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public function admin_enqueue_scripts() { |
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$screen = get_current_screen(); |
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if ( empty( $screen ) || 'nav-menus' !== $screen->base ) { |
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return; |
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} |
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|
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$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min'; |
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wp_enqueue_script( 'pll_nav_menu', plugins_url( "/js/build/nav-menu{$suffix}.js", POLYLANG_ROOT_FILE ), array(), POLYLANG_VERSION ); |
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|
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$data = array( |
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'strings' => PLL_Switcher::get_switcher_options( 'menu', 'string' ), // The strings for the options |
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'title' => __( 'Languages', 'polylang' ), // The title |
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'val' => array(), |
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); |
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|
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// Get all language switcher menu items |
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$items = get_posts( |
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array( |
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'numberposts' => -1, |
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'nopaging' => true, |
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'post_type' => 'nav_menu_item', |
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'fields' => 'ids', |
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'meta_key' => '_pll_menu_item', |
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) |
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); |
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|
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// The options values for the language switcher |
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foreach ( $items as $item ) { |
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$data['val'][ $item ] = get_post_meta( $item, '_pll_menu_item', true ); |
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} |
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|
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// Send all these data to javascript |
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wp_localize_script( 'pll_nav_menu', 'pll_data', $data ); |
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} |
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|
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/** |
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* Save our menu item options. |
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* |
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* @since 1.1 |
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* |
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* @param int $menu_id ID of the updated menu. |
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* @param int $menu_item_db_id ID of the updated menu item. |
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* @return void |
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*/ |
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public function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0 ) { |
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if ( ! current_user_can( 'edit_theme_options' ) ) { |
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return; |
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} |
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|
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if ( ! isset( $_REQUEST['update-nav-menu-nonce'] ) || ! wp_verify_nonce( $_REQUEST['update-nav-menu-nonce'], 'update-nav_menu' ) ) { |
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return; |
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} |
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|
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if ( empty( $_POST['menu-item-url'] ) || ! is_array( $_POST['menu-item-url'] ) || empty( $_POST['menu-item-url'][ $menu_item_db_id ] ) || '#pll_switcher' !== $_POST['menu-item-url'][ $menu_item_db_id ] ) { |
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return; |
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} |
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|
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$options = array( 'hide_if_no_translation' => 0, 'hide_current' => 0, 'force_home' => 0, 'show_flags' => 0, 'show_names' => 1, 'dropdown' => 0 ); // Default values. |
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|
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// Our jQuery form has not been displayed. |
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if ( empty( $_POST['menu-item-pll-detect'][ $menu_item_db_id ] ) ) { |
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if ( ! get_post_meta( $menu_item_db_id, '_pll_menu_item', true ) ) { // Our options were never saved. |
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update_post_meta( $menu_item_db_id, '_pll_menu_item', $options ); |
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} |
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} else { |
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foreach ( array_keys( $options ) as $opt ) { |
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$options[ $opt ] = empty( $_POST[ 'menu-item-' . $opt ][ $menu_item_db_id ] ) ? 0 : 1; |
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} |
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update_post_meta( $menu_item_db_id, '_pll_menu_item', $options ); // Allow us to easily identify our nav menu item. |
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} |
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} |
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|
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/** |
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* Assigns menu languages and translations based on (temporary) locations. |
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* |
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* @since 1.8 |
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* |
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* @param array $locations Nav menu locations. |
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* @return array |
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*/ |
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public function update_nav_menu_locations( $locations ) { |
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// Extract language and menu from locations. |
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$nav_menus = $this->options->get( 'nav_menus' ); |
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|
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foreach ( $locations as $loc => $menu ) { |
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$infos = $this->explode_location( $loc ); |
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$nav_menus[ $this->theme ][ $infos['location'] ][ $infos['lang'] ] = $menu ?: 0; |
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|
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if ( $this->options->get( 'default_lang' ) !== $infos['lang'] ) { |
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unset( $locations[ $loc ] ); // Remove temporary locations before database update. |
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} |
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} |
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|
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$this->options->set( 'nav_menus', $nav_menus ); |
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|
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return $locations; |
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} |
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|
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/** |
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* Assigns menu languages and translations based on (temporary) locations. |
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* |
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* @since 1.1 |
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* |
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* @param mixed $mods Theme mods. |
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* @return mixed |
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*/ |
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public function pre_update_option_theme_mods( $mods ) { |
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global $wp_customize; |
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|
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if ( ! current_user_can( 'edit_theme_options' ) || ! is_array( $mods ) || ! isset( $mods['nav_menu_locations'] ) || ! is_array( $mods['nav_menu_locations'] ) ) { |
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return $mods; |
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} |
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|
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/* |
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* Manage Locations tab in Appearance -> Menus. |
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*/ |
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if ( isset( $_GET['action'], $_REQUEST['_wpnonce'] ) && wp_verify_nonce( $_REQUEST['_wpnonce'], 'save-menu-locations' ) && 'locations' === $_GET['action'] ) { |
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$nav_menus = $this->options->get( 'nav_menus' ); |
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|
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$nav_menus[ $this->theme ] = array(); |
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$this->options->set( 'nav_menus', $nav_menus ); |
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|
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$mods['nav_menu_locations'] = $this->update_nav_menu_locations( $mods['nav_menu_locations'] ); |
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return $mods; |
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} |
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|
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/* |
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* Edit Menus tab in Appearance -> Menus. |
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*/ |
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if ( isset( $_POST['action'], $_REQUEST['update-nav-menu-nonce'] ) && wp_verify_nonce( $_REQUEST['update-nav-menu-nonce'], 'update-nav_menu' ) && 'update' === $_POST['action'] ) { |
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$nav_menus = $this->options->get( 'nav_menus' ); |
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|
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$nav_menus[ $this->theme ] = array(); |
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$this->options->set( 'nav_menus', $nav_menus ); |
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|
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$mods['nav_menu_locations'] = $this->update_nav_menu_locations( $mods['nav_menu_locations'] ); |
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return $mods; |
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} |
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|
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if ( ! $wp_customize instanceof WP_Customize_Manager ) { |
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return $mods; |
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} |
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|
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/* |
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* Customizer. Don't reset locations in this case. |
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*/ |
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$action = 'save-customize_' . $wp_customize->get_stylesheet(); |
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if ( isset( $_POST['action'], $_REQUEST['nonce'] ) && wp_verify_nonce( $_REQUEST['nonce'], $action ) && 'customize_save' == $_POST['action'] ) { |
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$mods['nav_menu_locations'] = $this->update_nav_menu_locations( $mods['nav_menu_locations'] ); |
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} |
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|
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return $mods; |
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} |
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|
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/** |
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* Fills temporary menu locations based on menus translations |
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* |
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* @since 1.2 |
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* |
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* @param bool|array $menus Associative array of registered navigation menu IDs keyed by their location name. |
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* @return bool|array |
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*/ |
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public function theme_mod_nav_menu_locations( $menus ) { |
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// Prefill locations with 0 value in case a location does not exist in $menus |
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$locations = get_registered_nav_menus(); |
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if ( is_array( $locations ) ) { |
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$locations = array_fill_keys( array_keys( $locations ), 0 ); |
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$menus = is_array( $menus ) ? array_merge( $locations, $menus ) : $locations; |
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} |
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|
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if ( is_array( $menus ) ) { |
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foreach ( array_keys( $menus ) as $loc ) { |
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foreach ( $this->model->get_languages_list() as $lang ) { |
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if ( ! empty( $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ] ) && term_exists( $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ], 'nav_menu' ) ) { |
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$menus[ $this->combine_location( $loc, $lang ) ] = $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ]; |
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} |
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} |
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} |
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} |
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|
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return $menus; |
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} |
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|
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/** |
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* Removes the nav menu term_id from the locations stored in Polylang options when a nav menu is deleted |
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* |
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* @since 1.7.3 |
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* |
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* @param int $term_id nav menu id |
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* @return void |
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*/ |
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public function delete_nav_menu( $term_id ) { |
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$nav_menus = $this->options->get( 'nav_menus' ); |
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|
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if ( empty( $nav_menus ) ) { |
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return; |
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} |
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|
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foreach ( $nav_menus as $theme => $locations ) { |
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foreach ( $locations as $loc => $languages ) { |
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foreach ( $languages as $lang => $menu_id ) { |
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if ( $menu_id === $term_id ) { |
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unset( $nav_menus[ $theme ][ $loc ][ $lang ] ); |
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} |
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} |
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} |
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} |
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|
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$this->options->set( 'nav_menus', $nav_menus ); |
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} |
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} |
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|
