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<?php |
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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 object $polylang |
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*/ |
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public function __construct( &$polylang ) { |
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parent::__construct( $polylang ); |
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|
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$this->theme = get_option( 'stylesheet' ); |
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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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|
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// protection against #24802 |
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// backward compatibility with WP < 4.1 |
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if ( version_compare( $GLOBALS['wp_version'], '4.1', '<' ) ) { |
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add_filter( 'pre_insert_term', array( $this, 'pre_insert_term' ), 10, 2 ); |
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} |
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} |
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|
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/** |
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* setups filters and terms |
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* adds the language switcher metabox 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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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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add_filter( 'wp_get_nav_menu_items', array( $this, 'translate_switcher_title' ) ); |
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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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// filter _wp_auto_add_pages_to_menu by language |
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add_action( 'transition_post_status', array( $this, 'auto_add_pages_to_menu' ), 5, 3 ); // before _wp_auto_add_pages_to_menu |
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|
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// FIXME is it possible to choose the order ( after theme locations in WP3.5 and older ) ? |
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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( $this, 'lang_switch' ), 'nav-menus', 'side', 'high' ); |
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|
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$this->create_nav_menu_locations(); |
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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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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 $_nav_menu_placeholder; ?>][menu-item-object-id]" value="-1"> <?php esc_html_e( 'Language switcher', 'polylang' ); ?> |
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</label> |
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<input type="hidden" class="menu-item-type" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" value="custom"> |
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<input type="hidden" class="menu-item-title" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" value="<?php esc_html_e( 'Language switcher', 'polylang' ); ?>"> |
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<input type="hidden" class="menu-item-url" name="menu-item[<?php echo $_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( $nav_menu_selected_id, 0 ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="submit-posttype-lang-switch"> |
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<span class="spinner"></span> |
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</span> |
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</p> |
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</div><?php |
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} |
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|
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/** |
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* prepares javascript to modify the language switcher menu item |
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* |
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* @since 1.1 |
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*/ |
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public function admin_enqueue_scripts() { |
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$screen = get_current_screen(); |
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if ( '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', POLYLANG_URL .'/js/nav-menu' . $suffix . '.js', array( 'jquery' ), POLYLANG_VERSION ); |
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|
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$data['strings'] = PLL_Switcher::get_switcher_options( 'menu', 'string' ); // the strings for the options |
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$data['title'] = __( 'Language switcher', 'polylang' ); // the title |
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|
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// get all language switcher menu items |
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$items = get_posts( 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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// the options values for the language switcher |
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$data['val'] = array(); |
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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 not used |
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* @param int $menu_item_db_id |
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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 ( empty( $_POST['menu-item-url'][ $menu_item_db_id ] ) || '#pll_switcher' != $_POST['menu-item-url'][ $menu_item_db_id ] ) { |
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return; |
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} |
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|
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// security check |
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// as 'wp_update_nav_menu_item' can be called from outside WP admin |
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if ( current_user_can( 'edit_theme_options' ) ) { |
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check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' ); |
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|
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$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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// 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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} |
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else { |
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foreach ( $options as $opt => $v ) { |
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$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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/** |
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* translates the language switcher menu items title in case the user switches the admin language |
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* |
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* @since 1.1.1 |
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* |
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* @param array $items |
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* @return array modified $items |
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*/ |
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public function translate_switcher_title( $items ) { |
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foreach ( $items as $item ) { |
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if ( '#pll_switcher' == $item->url ) { |
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$item->post_title = __( 'Language switcher', 'polylang' ); |
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} |
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} |
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return $items; |
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} |
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|
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/** |
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* assign 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( $locations ) { |
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$default = $this->options['default_lang']; |
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|
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// extract language and menu from locations |
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foreach ( $locations as $loc => $menu ) { |
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$infos = $this->explode_location( $loc ); |
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$this->options['nav_menus'][ $this->theme ][ $infos['location'] ][ $infos['lang'] ] = $menu; |
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if ( $this->options['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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update_option( 'polylang', $this->options ); |
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return $locations; |
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} |
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|
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/** |
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* assign 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 array $mods theme mods |
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* @return unmodified $mods |
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*/ |
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public function pre_update_option_theme_mods( $mods ) { |
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if ( current_user_can( 'edit_theme_options' ) && isset( $mods['nav_menu_locations'] ) ) { |
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|
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// Manage Locations tab in Appearance -> Menus |
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if ( isset( $_GET['action'] ) && 'locations' == $_GET['action'] ) { |
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check_admin_referer( 'save-menu-locations' ); |
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$this->options['nav_menus'][ $this->theme ] = array(); |
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} |
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|
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// Edit Menus tab in Appearance -> Menus |
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// add the test of $_POST['update-nav-menu-nonce'] to avoid conflict with Vantage theme |
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elseif ( isset( $_POST['action'], $_POST['update-nav-menu-nonce'] ) && 'update' == $_POST['action'] ) { |
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check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' ); |
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$this->options['nav_menus'][ $this->theme ] = array(); |
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} |
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|
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// customizer |
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// don't reset locations in this case. |
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// see http://wordpress.org/support/topic/menus-doesnt-show-and-not-saved-in-theme-settings-multilingual-site |
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elseif ( isset( $_POST['action'] ) && 'customize_save' == $_POST['action'] ) { |
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check_ajax_referer( 'save-customize_' . $GLOBALS['wp_customize']->get_stylesheet(), 'nonce' ); |
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} |
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|
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else { |
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return $mods; // no modification for nav menu locations |
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} |
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|
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$mods['nav_menu_locations'] = $this->update_nav_menu_locations( $mods['nav_menu_locations'] ); |
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} |
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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 |
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* @return bool|array modified list of menu locations |
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*/ |
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public function theme_mod_nav_menu_locations( $menus ) { |
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if ( is_array( $menus ) ) { |
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foreach ( $menus as $loc => $menu ) { |
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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 nav menu id |
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*/ |
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function delete_nav_menu( $term_id ) { |
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if ( isset( $this->options['nav_menus'] ) ) { |
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foreach ( $this->options['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( $this->options['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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update_option( 'polylang', $this->options ); |
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} |
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} |
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|
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/** |
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* filters the option nav_menu_options for auto added pages to menu |
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* |
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* @since 0.9.4 |
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* |
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* @param array $options |
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* @return array Modified options |
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*/ |
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public function nav_menu_options( $options ) { |
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$options['auto_add'] = array_intersect( $options['auto_add'], array( $this->auto_add_menus ) ); |
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return $options; |
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} |
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|
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/** |
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* filters _wp_auto_add_pages_to_menu by language |
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* |
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* @since 0.9.4 |
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* |
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* @param string $new_status Transition to this post status. |
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* @param string $old_status Previous post status. |
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* @param object $post Post data. |
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*/ |
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public function auto_add_pages_to_menu( $new_status, $old_status, $post ) { |
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if ( 'publish' != $new_status || 'publish' == $old_status || 'page' != $post->post_type || ! empty( $post->post_parent ) || ! ( $lang = $this->model->post->get_language( $post->ID ) ) ) { |
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return; |
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} |
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|
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if ( ! empty( $this->options['nav_menus'][ $this->theme ] ) ) { |
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// get all the menus in the page language |
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foreach ( $this->options['nav_menus'][ $this->theme ] as $loc ) { |
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if ( ! empty( $loc[ $lang->slug ] ) ) { |
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$menus[] = $loc[ $lang->slug ]; |
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} |
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} |
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|
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if ( ! empty( $menus ) ) { |
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$this->auto_add_menus = implode( ',', $menus ); |
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add_filter( 'option_nav_menu_options', array( $this, 'nav_menu_options' ) ); |
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} |
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} |
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} |
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|
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/** |
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* prevents sharing a menu term with a language term by renaming the nav menu before its creation |
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* to avoid http://core.trac.wordpress.org/ticket/24802 |
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* and http://wordpress.org/support/topic/all-connection-between-elements-lost |
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* backward compatibility with WP < 4.1 |
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* |
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* @since 1.1.3 |
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* |
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* @param string $name term name |
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* @param string $taxonomy |
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* @return string modified ( nav menu ) term name if necessary |
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*/ |
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function pre_insert_term( $name, $taxonomy ) { |
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return ( 'nav_menu' == $taxonomy && in_array( $name, $this->model->get_languages_list( array( 'fields' => 'name' ) ) ) ) ? $name .= '-menu' : $name; |
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} |
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} |
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|
