Viewing file:  admin-nav-menu.php (11.26 KB) -rw-r--r--
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<?php
/**
* manages custom menus translations as well as the language switcher menu item on admin side
*
* @since 1.2
*/
class PLL_Admin_Nav_Menu extends PLL_Nav_Menu {
/**
* constructor: setups filters and actions
*
* @since 1.2
*
* @param object $polylang
*/
public function __construct( &$polylang ) {
parent::__construct( $polylang );
$this->theme = get_option( 'stylesheet' );
// populates nav menus locations
// since WP 4.4, must be done before customize_register is fired
add_filter( 'theme_mod_nav_menu_locations', array( $this, 'theme_mod_nav_menu_locations' ), 20 );
// integration in the WP menu interface
add_action( 'admin_init', array( $this, 'admin_init' ) ); // after Polylang upgrade
}
/**
* setups filters and terms
* adds the language switcher metabox and create new nav menu locations
*
* @since 1.1
*/
public function admin_init() {
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
add_action( 'wp_update_nav_menu_item', array( $this, 'wp_update_nav_menu_item' ), 10, 2 );
add_filter( 'wp_get_nav_menu_items', array( $this, 'translate_switcher_title' ) );
// translation of menus based on chosen locations
add_filter( 'pre_update_option_theme_mods_' . $this->theme, array( $this, 'pre_update_option_theme_mods' ) );
add_action( 'delete_nav_menu', array( $this, 'delete_nav_menu' ) );
// 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
// FIXME is it possible to choose the order ( after theme locations in WP3.5 and older ) ?
// FIXME not displayed if Polylang is activated before the first time the user goes to nav menus http://core.trac.wordpress.org/ticket/16828
add_meta_box( 'pll_lang_switch_box', __( 'Language switcher', 'polylang' ), array( $this, 'lang_switch' ), 'nav-menus', 'side', 'high' );
$this->create_nav_menu_locations();
}
/**
* language switcher metabox
* The checkbox and all hidden fields are important
* 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/
*
* @since 1.1
*/
public function lang_switch() {
global $_nav_menu_placeholder, $nav_menu_selected_id;
$_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1; ?>
<div id="posttype-lang-switch" class="posttypediv">
<div id="tabs-panel-lang-switch" class="tabs-panel tabs-panel-active">
<ul id="lang-switch-checklist" class="categorychecklist form-no-clear">
<li>
<label class="menu-item-title">
<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' ); ?>
</label>
<input type="hidden" class="menu-item-type" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" value="custom">
<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' ); ?>">
<input type="hidden" class="menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" value="#pll_switcher">
</li>
</ul>
</div>
<p class="button-controls">
<span class="add-to-menu">
<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">
<span class="spinner"></span>
</span>
</p>
</div><?php
}
/**
* prepares javascript to modify the language switcher menu item
*
* @since 1.1
*/
public function admin_enqueue_scripts() {
$screen = get_current_screen();
if ( 'nav-menus' != $screen->base ) {
return;
}
$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
wp_enqueue_script( 'pll_nav_menu', plugins_url( '/js/nav-menu' . $suffix . '.js', POLYLANG_FILE ), array( 'jquery' ), POLYLANG_VERSION );
$data['strings'] = PLL_Switcher::get_switcher_options( 'menu', 'string' ); // the strings for the options
$data['title'] = __( 'Language switcher', 'polylang' ); // the title
// get all language switcher menu items
$items = get_posts( array(
'numberposts' => -1,
'nopaging' => true,
'post_type' => 'nav_menu_item',
'fields' => 'ids',
'meta_key' => '_pll_menu_item',
) );
// the options values for the language switcher
$data['val'] = array();
foreach ( $items as $item ) {
$data['val'][ $item ] = get_post_meta( $item, '_pll_menu_item', true );
}
// send all these data to javascript
wp_localize_script( 'pll_nav_menu', 'pll_data', $data );
}
/**
* save our menu item options
*
* @since 1.1
*
* @param int $menu_id not used
* @param int $menu_item_db_id
*/
public function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0 ) {
if ( empty( $_POST['menu-item-url'][ $menu_item_db_id ] ) || '#pll_switcher' != $_POST['menu-item-url'][ $menu_item_db_id ] ) {
return;
}
// security check
// as 'wp_update_nav_menu_item' can be called from outside WP admin
if ( current_user_can( 'edit_theme_options' ) ) {
check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );
$options = array( 'hide_if_no_translation' => 0, 'hide_current' => 0,'force_home' => 0 ,'show_flags' => 0 ,'show_names' => 1, 'dropdown' => 0 ); // default values
// our jQuery form has not been displayed
if ( empty( $_POST['menu-item-pll-detect'][ $menu_item_db_id ] ) ) {
if ( ! get_post_meta( $menu_item_db_id, '_pll_menu_item', true ) ) { // our options were never saved
update_post_meta( $menu_item_db_id, '_pll_menu_item', $options );
}
}
else {
foreach ( $options as $opt => $v ) {
$options[ $opt ] = empty( $_POST[ 'menu-item-' . $opt ][ $menu_item_db_id ] ) ? 0 : 1;
}
update_post_meta( $menu_item_db_id, '_pll_menu_item', $options ); // allow us to easily identify our nav menu item
}
}
}
/**
* translates the language switcher menu items title in case the user switches the admin language
*
* @since 1.1.1
*
* @param array $items
* @return array modified $items
*/
public function translate_switcher_title( $items ) {
foreach ( $items as $item ) {
if ( '#pll_switcher' == $item->url ) {
$item->post_title = __( 'Language switcher', 'polylang' );
}
}
return $items;
}
/**
* assign menu languages and translations based on ( temporary ) locations
*
* @since 1.8
*
* @param array $locations nav menu locations
* @return array
*/
public function update_nav_menu_locations( $locations ) {
$default = $this->options['default_lang'];
// extract language and menu from locations
foreach ( $locations as $loc => $menu ) {
$infos = $this->explode_location( $loc );
$this->options['nav_menus'][ $this->theme ][ $infos['location'] ][ $infos['lang'] ] = $menu;
if ( $this->options['default_lang'] != $infos['lang'] ) {
unset( $locations[ $loc ] ); // remove temporary locations before database update
}
}
update_option( 'polylang', $this->options );
return $locations;
}
/**
* assign menu languages and translations based on ( temporary ) locations
*
* @since 1.1
*
* @param array $mods theme mods
* @return unmodified $mods
*/
public function pre_update_option_theme_mods( $mods ) {
if ( current_user_can( 'edit_theme_options' ) && isset( $mods['nav_menu_locations'] ) ) {
// Manage Locations tab in Appearance -> Menus
if ( isset( $_GET['action'] ) && 'locations' == $_GET['action'] ) {
check_admin_referer( 'save-menu-locations' );
$this->options['nav_menus'][ $this->theme ] = array();
}
// Edit Menus tab in Appearance -> Menus
// add the test of $_POST['update-nav-menu-nonce'] to avoid conflict with Vantage theme
elseif ( isset( $_POST['action'], $_POST['update-nav-menu-nonce'] ) && 'update' == $_POST['action'] ) {
check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );
$this->options['nav_menus'][ $this->theme ] = array();
}
// customizer
// don't reset locations in this case.
// see http://wordpress.org/support/topic/menus-doesnt-show-and-not-saved-in-theme-settings-multilingual-site
elseif ( isset( $_POST['action'] ) && 'customize_save' == $_POST['action'] ) {
check_ajax_referer( 'save-customize_' . $GLOBALS['wp_customize']->get_stylesheet(), 'nonce' );
}
else {
return $mods; // no modification for nav menu locations
}
$mods['nav_menu_locations'] = $this->update_nav_menu_locations( $mods['nav_menu_locations'] );
}
return $mods;
}
/**
* fills temporary menu locations based on menus translations
*
* @since 1.2
*
* @param bool|array $menus
* @return bool|array modified list of menu locations
*/
public function theme_mod_nav_menu_locations( $menus ) {
if ( is_array( $menus ) ) {
foreach ( $menus as $loc => $menu ) {
foreach ( $this->model->get_languages_list() as $lang ) {
if ( ! empty( $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ] ) && term_exists( $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ], 'nav_menu' ) ) {
$menus[ $this->combine_location( $loc, $lang ) ] = $this->options['nav_menus'][ $this->theme ][ $loc ][ $lang->slug ];
}
}
}
}
return $menus;
}
/**
* removes the nav menu term_id from the locations stored in Polylang options when a nav menu is deleted
*
* @since 1.7.3
*
* @param int nav menu id
*/
function delete_nav_menu( $term_id ) {
if ( isset( $this->options['nav_menus'] ) ) {
foreach ( $this->options['nav_menus'] as $theme => $locations ) {
foreach ( $locations as $loc => $languages ) {
foreach ( $languages as $lang => $menu_id ) {
if ( $menu_id === $term_id ) {
unset( $this->options['nav_menus'][ $theme ][ $loc ][ $lang ] );
}
}
}
}
update_option( 'polylang', $this->options );
}
}
/**
* filters the option nav_menu_options for auto added pages to menu
*
* @since 0.9.4
*
* @param array $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 object $post Post data.
*/
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 ) || ! ( $lang = $this->model->post->get_language( $post->ID ) ) ) {
return;
}
if ( ! empty( $this->options['nav_menus'][ $this->theme ] ) ) {
$this->auto_add_menus = array();
// get all the menus in the page language
foreach ( $this->options['nav_menus'][ $this->theme ] as $loc ) {
if ( ! empty( $loc[ $lang->slug ] ) ) {
$this->auto_add_menus[] = $loc[ $lang->slug ];
}
}
add_filter( 'option_nav_menu_options', array( $this, 'nav_menu_options' ) );
}
}
}
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