' . __('Settings') . ''; array_unshift( $links, $settings_link ); return $links; } // adds the link to the languages panel in the wordpress admin menu function add_menus() { add_submenu_page('options-general.php', __('Languages','polylang'), __('Languages','polylang'), 'manage_options', 'mlang', array($this, 'languages_page')); } // setup js scripts function admin_js() { wp_enqueue_script('polylang_admin', POLYLANG_URL.'/admin.js'); } // the languages panel function languages_page() { global $wp_rewrite; $options = get_option('polylang'); $listlanguages = $this->get_languages_list(); $list_table = new Polylang_List_Table(); // for nav menus form $locations = get_registered_nav_menus(); $menus = wp_get_nav_menus(); $menu_lang = get_option('polylang_nav_menus'); $action = ''; if (isset($_REQUEST['action'])) $action = $_REQUEST['action']; switch ($action) { case 'add': check_admin_referer( 'add-lang', '_wpnonce_add-lang' ); if (isset($_POST['name']) && isset($_POST['description'])) { wp_insert_term($_POST['name'],'language',array('slug'=>$_POST['slug'], 'description'=>$_POST['description'])); $wp_rewrite->flush_rules(); // refresh rewrite rules } if (!isset($options['default_lang'])) { // if this is the first language created, set it as default language $options['default_lang'] = $_POST['slug']; update_option('polylang', $options); } wp_redirect('admin.php?page=mlang'); // to refresh the page (possible thanks to the $_GET['noheader']=true) exit; break; case 'delete': check_admin_referer( 'delete-lang'); if (isset($_GET['lang'])) { $lang = $this->get_language($_GET['lang']); $lang_slug = $lang->slug; // delete all translations in posts in this language $args = array('numberposts'=>-1, 'taxonomy' => 'language', 'term' => $lang_slug, 'post_type'=>'any', 'post_status'=>'any'); $posts = get_posts($args); foreach ($posts as $post) { foreach ($languages as $language) { delete_post_meta($post->ID, '_lang-'.$language->slug); } } // delete references to this language in all posts $args = array('numberposts'=>-1, 'meta_key'=>'_lang-'.$lang_slug, 'post_type'=>'any', 'post_status'=>'any'); $posts = get_posts($args); foreach ($posts as $post) { delete_post_meta($post->ID, '_lang-'.$lang_slug); } // delete references to this language in categories & post tags $terms = get_terms(array('category', 'post_tag'), 'get=all'); foreach ($terms as $term) { if ($this->get_term_language($term->term_id) == $lang) { foreach ($languages as $language) { delete_metadata('term', $term->term_id, '_lang-'.$language->slug); // deletes translations of this term } delete_metadata('term', $term->term_id, '_language', $_GET['lang']); // delete language of this term } delete_metadata('term', $term->term_id, '_lang-'.$lang_slug); // deletes references to this term in translated term } // delete the language itself wp_delete_term($_GET['lang'], 'language'); $wp_rewrite->flush_rules(); // refresh rewrite rules // oops ! we deleted the default language... if ($options['default_lang'] == $lang_slug) { if (!empty($languages)) $options['default_lang'] = $languages[0]->slug; // arbitrary choice... else unset($options['default_lang']); update_option('polylang', $options); } } wp_redirect('admin.php?page=mlang'); // to refresh the page (possible thanks to the $_GET['noheader']=true) exit; break; case 'edit': if (isset($_GET['lang'])) $edit_lang = $this->get_language($_GET['lang']); break; case 'update': check_admin_referer( 'add-lang', '_wpnonce_add-lang' ); if (isset($_POST['lang'])) { // Update links to this language in posts and terms in case the slug has been modified $lang = $this->get_language($_POST['lang']); $old_slug = $lang->slug; if ($old_slug != $_POST['slug']) { // update the language slug in posts meta $args = array('numberposts'=>-1, 'meta_key'=>'_lang-'.$old_slug, 'post_type'=>'any', 'post_status'=>'any'); $posts = get_posts($args); foreach ($posts as $post) { $post_id = get_post_meta($post->ID, '_lang-'.$old_slug, true); delete_post_meta($post->ID, '_lang-'.$old_slug); update_post_meta($post->ID, '_lang-'.$_POST['slug'], $post_id); } // update the language slug in categories & post tags meta $terms = get_terms(array('category', 'post_tag'), 'get=all'); foreach ($terms as $term) { $term_id = get_metadata('term', $term->term_id, '_lang-'.$old_slug, true); if ($term_id) { delete_metadata('term', $term->term_id, '_lang-'.$old_slug); update_metadata('term', $term->term_id, '_lang-'.$_POST['slug'], $term_id); } } } // and finally update the language itself wp_update_term($_POST['lang'], 'language', array('name'=>$_POST['name'], 'slug'=>$_POST['slug'], 'description'=>$_POST['description'])); $wp_rewrite->flush_rules(); // refresh rewrite rules } wp_redirect('admin.php?page=mlang'); // to refresh the page (possible thanks to the $_GET['noheader']=true) exit; break; case 'nav-menus': check_admin_referer( 'nav-menus-lang', '_wpnonce_nav-menus-lang' ); $menu_lang = $_POST['menu-lang']; update_option('polylang_nav_menus', $menu_lang); break; case 'options': check_admin_referer( 'options-lang', '_wpnonce_options-lang' ); $options['rewrite'] = $_POST['rewrite']; isset($_POST['browser']) ? $options['browser'] = 1 : $options['browser'] = 0; $options['default_lang'] = $_POST['default_lang']; update_option('polylang', $options); // refresh refresh permalink structure and rewrite rules in case rewrite option has been modified $wp_rewrite->extra_permastructs['language'][0] = $options['rewrite'] ? '%language%' : '/language/%language%'; $wp_rewrite->flush_rules(); break; default: } // prepare the list table of languages $data = array(); foreach ($listlanguages as $lang) $data[] = (array) $lang; $list_table->prepare_items($data); // displays the page include(POLYLANG_DIR.'/languages-form.php'); } // adds the language column (before the date column) in the posts and pages list table function add_post_column($columns, $post_type ='') { if (in_array($post_type, array('', 'post', 'page'))) { $keys = array( 'date', 'comments' ); foreach ($keys as $k) { if (array_key_exists($k, $columns)) $end[$k] = array_pop($columns); } $columns['language'] = __('Language', 'polylang'); if (isset($end)) $columns = array_merge($columns, $end); } return $columns; } // fills the language column in the posts table function post_column($column, $post_id) { $lang = $this->get_post_language($post_id); if ($lang && $column == 'language') echo $lang->name; } // converts language term_id to slug in $query // needed to filter the posts by language with wp_dropdown_categories in restrict_manage_posts function parse_query($query) { global $pagenow; $qvars = &$query->query_vars; if ($pagenow=='edit.php' && isset($qvars['lang']) && is_numeric($qvars['lang'])) { $lang = $this->get_language($qvars['lang']); if ($lang) $qvars['lang'] = $lang->slug; } } // adds a filter for languages in the Posts and Pages panels function restrict_manage_posts() { global $wp_query; $screen = get_current_screen(); $languages = $this->get_languages_list(); if (!empty($languages) && $screen->base == 'edit') { $qvars = $wp_query->query; wp_dropdown_categories(array( 'show_option_all' => __('Show all languages', 'polylang'), 'name' => 'lang', 'selected' => isset($qvars['lang']) ? $qvars['lang'] : 0, 'taxonomy' => 'language')); } } // adds the Languages box in the 'Edit Post' and 'Edit Page' panels function add_meta_boxes() { add_meta_box('ml_box', __('Languages','polylang'), array(&$this,'post_language'), 'post', 'side','high'); add_meta_box('ml_box', __('Languages','polylang'), array(&$this,'post_language'), 'page', 'side','high'); } // the Languages metabox in the 'Edit Post' and 'Edit Page' panels function post_language() { global $post_ID; $post_type = get_post_type($post_ID); $lang = $this->get_post_language($post_ID); if (isset($_GET['new_lang'])) $lang = $this->get_language($_GET['new_lang']); $listlanguages = $this->get_languages_list(); include(POLYLANG_DIR.'/post-metabox.php'); } // ajax response for post metabox function post_lang_choice() { $listlanguages = $this->get_languages_list(); $lang = $this->get_language($_POST['lang']); $post_ID = $_POST['post_id']; if ($lang) include(POLYLANG_DIR.'/post-translations.php'); die(); } // called when a post (or page) is saved, published or updated // the underscore in '_lang' hides the post meta in the Custom Fields metabox in the Edit Post screen function save_post($post_id) { $id = wp_is_post_revision($post_id); if ($id) $post_id = $id; if (isset($_POST['post_lang_choice'])) wp_set_post_terms($post_id, $_POST['post_lang_choice'], 'language' ); $lang = $this->get_post_language($post_id); $listlanguages = $this->get_languages_list(); foreach ($listlanguages as $language) { if (isset($_POST[$language->slug]) && $_POST[$language->slug]) { // FIXME I don't check that the translated post is in the right language ! update_post_meta($post_id, '_lang-'.$language->slug, $_POST[$language->slug]); // saves the links to translated posts if ($lang) update_post_meta($this->get_translated_post($post_id, $language), '_lang-'.$lang->slug, $post_id); // tells the translated to link to this post } else { // deletes the translation in case there was previously one if ($lang) delete_post_meta($this->get_translated_post($post_id, $language), '_lang-'.$lang->slug); // in the translated post delete_post_meta($post_id, '_lang-'.$language->slug); // in this post } } // propagates translations between them foreach ($listlanguages as $language) { foreach ($listlanguages as $lg) { $id = $this->get_translated_post($post_id, $lg); if ($lg != $lang && $lg != $language && $id) update_post_meta($this->get_translated_post($post_id, $language), '_lang-'.$lg->slug, $id); } } } // called when a post (or page) is deleted function delete_post($post_id) { $id = wp_is_post_revision($post_id); if ($id) $post_id = $id; $lang = $this->get_post_language($post_id); if($lang) { $listlanguages = $this->get_languages_list(); foreach ($listlanguages as $language) { delete_post_meta($this->get_translated_post($post_id, $language), '_lang-'.$lang->slug); // delete links to this post // WP deletes post metas linked to this post so it is useless to do it before } } } // adds the language field in the 'Categories' and 'Post Tags' panels function add_term_form() { $taxonomy = $_GET['taxonomy']; $lang = null; if (isset($_GET['new_lang'])) $lang = $this->get_language($_GET['new_lang']); $listlanguages = $this->get_languages_list(); // displays the language field include(POLYLANG_DIR.'/add-term-form.php'); } // adds the language field and translations tables in the 'Edit Category' and 'Edit Tag' panels function edit_term_form($tag) { $term_id = $tag->term_id; $lang = $this->get_term_language($term_id); $taxonomy = $tag->taxonomy; $listlanguages = $this->get_languages_list(); include(POLYLANG_DIR.'/edit-term-form.php'); } // ajax response for edit term form function term_lang_choice() { if ($_POST['lang']) { $lang = $this->get_language($_POST['lang']); $term_id = isset($_POST['term_id']) ? $_POST['term_id'] : null; $taxonomy = $_POST['taxonomy']; $listlanguages = $this->get_languages_list(); include(POLYLANG_DIR.'/term-translations.php'); } die(); } // adds the language column (before the posts column) in the 'Categories' or Post Tags table function add_term_column($columns) { if (array_key_exists('posts', $columns)) $end = array_pop($columns); $columns['language'] = __('Language', 'polylang'); if (isset($end)) $columns['posts'] = $end; return $columns; } // fills the language column in the 'Categories' or Post Tags table function term_column($empty, $column, $term_id) { $lang = $this->get_term_language($term_id); if ($lang && $column == 'language') echo $lang->name; } // called when a category or post tag is created or edited function save_term($term_id) { if (isset($_POST['term_lang_choice']) && $_POST['term_lang_choice']) update_metadata('term', $term_id, '_language', $_POST['term_lang_choice'] ); else delete_metadata('term', $term_id, '_language'); $lang = $this->get_term_language($term_id); $listlanguages = $this->get_languages_list(); foreach ($listlanguages as $language) { $slug = '_lang-'.$language->slug; if (isset($_POST[$slug]) && $_POST[$slug]) { // FIXME I don't check that the translated term is in the right language ! update_metadata('term', $term_id, $slug, $_POST[$slug] ); if ($lang) update_metadata('term', $_POST[$slug], '_lang-'.$lang->slug, $term_id ); } else { // deletes the translation in case there was previously one if ($lang) delete_metadata('term', $this->get_translated_term($term_id, $language), '_lang-'.$lang->slug); // in the translated term delete_metadata('term', $term_id, '_lang-'.$language->slug); // in this term } } // propagates translations between them if (isset($lang)) { foreach ($listlanguages as $language) { foreach ($listlanguages as $lg) { $id = $this->get_translated_term($term_id, $lg); if ($lg != $lang && $lg != $language && $id) update_metadata('term',$this->get_translated_term($term_id, $language), '_lang-'.$lg->slug, $id); } } } } // called when a category or post tag is deleted function delete_term($term_id) { $lang = $this->get_term_language($term_id); if($lang) { delete_metadata('term', $term_id, '_language' ); $listlanguages = $this->get_languages_list(); foreach ($listlanguages as $language) { delete_metadata('term', $this->get_translated_term($term_id, $language), '_lang-'.$lang->slug); // delete links to this term } foreach ($listlanguages as $language) { delete_metadata('term', $term_id, '_lang-'.$language->slug); } } } // returns all terms in the $taxonomy in the $term_language which have no translation in the $translation_language function get_terms_not_translated($taxonomy, $term_language, $translation_language) { $new_terms = array(); $terms = get_terms($taxonomy, 'hide_empty=0'); foreach ($terms as $term) { $lang = $this->get_term_language($term->term_id); if ($lang && $lang->name == $term_language->name) { $translated_term = $this->get_translated_term($term->term_id, $translation_language); if (!$translated_term) $new_terms[] = $term; } } return $new_terms; } // modifies the theme location nav menu metabox function nav_menu_theme_locations() { // only if the theme supports nav menus if ( ! current_theme_supports( 'menus' ) ) return; // thanks to : http://wordpress.stackexchange.com/questions/2770/how-to-add-a-custom-metabox-to-the-menu-management-admin-screen $metabox = &$GLOBALS['wp_meta_boxes']['nav-menus']['side']['default']['nav-menu-theme-locations']; $metabox['callback'] = array(&$this,'nav_menu_language'); $metabox['title'] = __('Theme locations and languages', 'polylang'); } // displays a message to redirect to the languages options page function nav_menu_language() { echo '

' . sprintf (__('Please go to the %slanguages page%s to set theme locations and languages', 'polylang'), '', '') . '

'; } // refresh rewrite rules if the 'page_on_front' option is modified function update_option($option) { global $wp_rewrite; if ($option == 'page_on_front') $wp_rewrite->flush_rules(); } } // class Polylang_Admin ?>