| 1 |
<?php |
| 2 |
// filters posts and terms by language, rewrites links to include the language, etc... |
| 3 |
// used only for frontend |
| 4 |
class Polylang_Core extends Polylang_base { |
| 5 |
private $curlang; // current language |
| 6 |
private $default_locale; |
| 7 |
private $list_textdomains = array(); // all text domains |
| 8 |
private $labels; // post types and taxonomies labels to translate |
| 9 |
private $first_query = true; |
| 10 |
|
| 11 |
// options often needed |
| 12 |
private $page_for_posts; |
| 13 |
private $page_on_front; |
| 14 |
|
| 15 |
function __construct() { |
| 16 |
parent::__construct(); |
| 17 |
|
| 18 |
// init options often needed |
| 19 |
$this->page_for_posts = get_option('page_for_posts'); |
| 20 |
$this->page_on_front = get_option('page_on_front'); |
| 21 |
|
| 22 |
// if no language found, choose the preferred one |
| 23 |
add_filter('pll_get_current_language', array(&$this, 'pll_get_current_language')); |
| 24 |
|
| 25 |
// sets the language of comment |
| 26 |
add_action('pre_comment_on_post', array(&$this, 'pre_comment_on_post')); |
| 27 |
|
| 28 |
// text domain management |
| 29 |
if ($this->options['force_lang'] && get_option('permalink_structure') && PLL_LANG_EARLY) |
| 30 |
add_action('setup_theme', array(&$this, 'setup_theme'), 20); // after Polylang::setup_theme |
| 31 |
else { |
| 32 |
add_filter('override_load_textdomain', array(&$this, 'mofile'), 10, 3); |
| 33 |
add_filter('gettext', array(&$this, 'gettext'), 10, 3); |
| 34 |
add_filter('gettext_with_context', array(&$this, 'gettext_with_context'), 10, 4); |
| 35 |
} |
| 36 |
|
| 37 |
add_action('init', array(&$this, 'init')); |
| 38 |
foreach (array('wp', 'login_init', 'admin_init') as $filter) // admin_init for ajax thanks to g100g |
| 39 |
add_action($filter, array(&$this, 'load_textdomains'), 5); // priority 5 for post types and taxonomies with registered with in wp hook with default priority |
| 40 |
|
| 41 |
// filters the WordPress locale |
| 42 |
add_filter('locale', array(&$this, 'get_locale')); |
| 43 |
|
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// filters posts according to the language |
| 45 |
add_filter('pre_get_posts', array(&$this, 'pre_get_posts')); |
| 46 |
|
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// filter sticky posts by current language |
| 48 |
add_filter('option_sticky_posts', array(&$this, 'option_sticky_posts')); |
| 49 |
|
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// translates page for posts and page on front |
| 51 |
add_filter('option_page_for_posts', array(&$this, 'translate_page')); |
| 52 |
add_filter('option_page_on_front', array(&$this, 'translate_page')); |
| 53 |
} |
| 54 |
|
| 55 |
// set these filters and actions only once the current language has been defined |
| 56 |
function add_language_filters() { |
| 57 |
// modifies the language information in rss feed |
| 58 |
// useful if WP < 3.4 |
| 59 |
add_filter('option_rss_language', array(&$this, 'option_rss_language')); |
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|
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// filters categories and post tags by language |
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add_filter('terms_clauses', array(&$this, 'terms_clauses'), 10, 3); |
| 63 |
|
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// meta in the html head section |
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add_action('wp_head', array(&$this, 'wp_head')); |
| 66 |
|
| 67 |
// modifies the page link in case the front page is not in the default language |
| 68 |
add_filter('page_link', array(&$this, 'page_link'), 10, 2); |
| 69 |
|
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// prevents redirection of the homepage |
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add_filter('redirect_canonical', array(&$this, 'redirect_canonical'), 10, 2); |
| 72 |
|
| 73 |
// adds javascript at the end of the document |
| 74 |
if (!$GLOBALS['wp_rewrite']->using_permalinks() && PLL_SEARCH_FORM_JS) |
| 75 |
add_action('wp_footer', array(&$this, 'wp_print_footer_scripts')); |
| 76 |
|
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// adds the language information in the search form |
| 78 |
// low priority in case the search form is created using the same filter as described in http://codex.wordpress.org/Function_Reference/get_search_form |
| 79 |
add_filter('get_search_form', array(&$this, 'get_search_form'), 99); |
| 80 |
|
| 81 |
// adds the language information in admin bar search form |
| 82 |
remove_action('admin_bar_menu', 'wp_admin_bar_search_menu', 4); |
| 83 |
add_action('admin_bar_menu', array(&$this, 'admin_bar_search_menu'), 4); |
| 84 |
|
| 85 |
// filters the pages according to the current language in wp_list_pages |
| 86 |
add_filter('wp_list_pages_excludes', array(&$this, 'wp_list_pages_excludes')); |
| 87 |
|
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// filters the comments according to the current language |
| 89 |
add_filter('comments_clauses', array(&$this, 'comments_clauses'), 10, 2); |
| 90 |
|
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// rewrites archives, next and previous post links to filter them by language |
| 92 |
foreach (array('getarchives', 'get_previous_post', 'get_next_post') as $filter) |
| 93 |
foreach (array('_join', '_where') as $clause) |
| 94 |
add_filter($filter.$clause, array(&$this, 'posts'.$clause)); |
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|
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// rewrites author and date links to filter them by language |
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foreach (array('feed_link', 'author_link', 'post_type_archive_link', 'year_link', 'month_link', 'day_link') as $filter) |
| 98 |
add_filter($filter, array(&$this, 'archive_link')); |
| 99 |
|
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$this->add_post_term_link_filters(); // these filters are in base as they may be used on admin side too |
| 101 |
|
| 102 |
// filters the nav menus according to the current language |
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add_filter('theme_mod_nav_menu_locations', array(&$this, 'nav_menu_locations')); |
| 104 |
add_filter('wp_nav_menu_args', array(&$this, 'wp_nav_menu_args')); |
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add_filter('wp_nav_menu_items', array(&$this, 'wp_nav_menu_items'), 10, 2); |
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|
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// filters the widgets according to the current language |
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add_filter('widget_display_callback', array(&$this, 'widget_display_callback'), 10, 3); |
| 109 |
|
| 110 |
// strings translation (must be applied before WordPress applies its default formatting filters) |
| 111 |
add_filter('widget_title', array(&$this, 'widget_title'), 1); |
| 112 |
add_filter('bloginfo', array(&$this, 'bloginfo'), 1, 2); |
| 113 |
add_filter('get_bloginfo_rss', array(&$this, 'bloginfo'), 1, 2); |
| 114 |
|
| 115 |
// translates biography |
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add_filter('get_user_metadata', array(&$this,'get_user_metadata'), 10, 4); |
| 117 |
|
| 118 |
// modifies the home url |
| 119 |
if (PLL_FILTER_HOME_URL) |
| 120 |
add_filter('home_url', array(&$this, 'home_url')); |
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} |
| 122 |
|
| 123 |
// returns the language according to browser preference or the default language |
| 124 |
function get_preferred_language() { |
| 125 |
// check first is the user was already browsing this site |
| 126 |
if (isset($_COOKIE['wordpress_polylang'])) |
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return $this->get_language($_COOKIE['wordpress_polylang']); |
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|
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// sets the browsing language according to the browser preferences |
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// code adapted from http://www.thefutureoftheweb.com/blog/use-accept-language-header |
| 131 |
if ($this->options['browser']) { |
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$accept_langs = array(); |
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|
| 134 |
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { |
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// break up string into pieces (languages and q factors) |
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preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse); |
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|
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$k = $lang_parse[1]; |
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$v = $lang_parse[4]; |
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|
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if ($n = count($k)) { |
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// set default to 1 for any without q factor |
| 143 |
foreach ($v as $key => $val) |
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if ($val === '') $v[$key] = 1; |
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|
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// bubble sort (need a stable sort for Android, so can't use a PHP sort function) |
| 147 |
if ($n > 1) { |
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for ($i = 2; $i <= $n; $i++) |
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for ($j = 0; $j <= $n-2; $j++) |
| 150 |
if ( $v[$j] < $v[$j + 1]) { |
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// swap values |
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$temp = $v[$j]; |
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$v[$j] = $v[$j + 1]; |
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$v[$j + 1] = $temp; |
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//swap keys |
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$temp = $k[$j]; |
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$k[$j] = $k[$j + 1]; |
| 158 |
$k[$j + 1] = $temp; |
| 159 |
} |
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} |
| 161 |
// NOTE: array_combine => PHP5 |
| 162 |
$accept_langs = array_combine($k,$v); |
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} |
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} |
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|
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// looks through sorted list and use first one that matches our language list |
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$listlanguages = $this->get_languages_list(array('hide_empty' => true)); // hides languages with no post |
| 168 |
foreach ($accept_langs as $accept_lang => $val) { |
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foreach ($listlanguages as $language) { |
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if (strpos($accept_lang, $language->slug) === 0 && !isset($pref_lang)) { |
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$pref_lang = $language; |
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} |
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} |
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} |
| 175 |
} // options['browser'] |
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|
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// return default if there is no preferences in the browser or preferences does not match our languages or it is requested not to use the browser preference |
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return isset($pref_lang) ? $pref_lang : $this->get_language($this->options['default_lang']); |
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} |
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|
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// returns the current language |
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function get_current_language() { |
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if ($this->curlang) |
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return $this->curlang; |
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|
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// no language set for 404 |
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if (is_404() || current_filter() == 'login_init') |
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return $this->get_preferred_language(); |
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|
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if ($var = get_query_var('lang')) |
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$lang = $this->get_language(reset(explode(',',$var))); // choose the first queried language |
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|
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// Ajax thanks to g100g |
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elseif (isset($_REQUEST['pll_load_front'])) |
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$lang = isset($_REQUEST['lang']) && $_REQUEST['lang'] ? $this->get_language($_REQUEST['lang']) : $this->get_preferred_language(); |
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|
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elseif ((is_single() || is_page() || (is_attachment() && PLL_MEDIA_SUPPORT)) && ( ($var = get_queried_object_id()) || ($var = get_query_var('p')) || ($var = get_query_var('page_id')) || ($var = get_query_var('attachment_id')) )) |
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$lang = $this->get_post_language($var); |
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|
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else { |
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foreach ($this->taxonomies as $taxonomy) { |
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if ($var = get_query_var(get_taxonomy($taxonomy)->query_var)) |
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$lang = $this->get_term_language($var, $taxonomy); |
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} |
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} |
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// allows plugins to set the language |
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return apply_filters('pll_get_current_language', isset($lang) ? $lang : false); |
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} |
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|
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// if no language found, return the preferred one |
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function pll_get_current_language($lang) { |
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return !$lang ? $this->get_preferred_language() : $lang; |
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} |
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|
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// sets the language of comment |
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// useful to redirect to correct post comment url when adding the language to all url |
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function pre_comment_on_post($post_id) { |
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$this->curlang = $this->get_post_language($post_id); |
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$this->add_post_term_link_filters(); |
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} |
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|
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// sets the language when it is always included in the url |
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function setup_theme() { |
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$root = $this->options['rewrite']? '' : 'language/'; |
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|
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foreach ($this->get_languages_list() as $language) |
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$languages[] = $language->slug; |
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|
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$languages = $GLOBALS['wp_rewrite']->using_permalinks() ? |
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'#\/'.$root.'('.implode('|', $languages).')\/#' : |
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'#lang=('.implode('|', $languages).')#'; |
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|
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preg_match($languages, trailingslashit($_SERVER['REQUEST_URI']), $matches); |
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|
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// home is resquested |
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if (str_replace('www.', '', home_url('/')) == trailingslashit((is_ssl() ? 'https://' : 'http://').str_replace('www.', '', $_SERVER['HTTP_HOST']).str_replace(array('index.php', '?'.$_SERVER['QUERY_STRING']), array('', ''), $_SERVER['REQUEST_URI']))) |
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$this->home_requested(); |
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|
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// $matches[1] is the slug of the requested language |
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elseif ($matches) |
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$this->curlang = $this->get_language($matches[1]); |
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elseif (false === strpos($_SERVER['SCRIPT_NAME'], 'index.php')) // wp-login, wp-signup, wp-activate |
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$this->curlang = $this->get_preferred_language(); |
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else |
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$this->curlang = $this->get_language($this->options['default_lang']); |
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} |
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|
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// save the default locale before we start any language manipulation |
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function init() { |
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$this->default_locale = get_locale(); |
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} |
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|
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// returns the locale based on current language |
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function get_locale($locale) { |
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return $this->curlang ? $this->curlang->description : $locale; |
| 256 |
} |
| 257 |
|
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// modifies the language information in rss feed |
| 259 |
function option_rss_language($value) { |
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return get_bloginfo_rss('language'); |
| 261 |
} |
| 262 |
|
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// saves all text domains in a table for later usage |
| 264 |
function mofile($bool, $domain, $mofile) { |
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$this->list_textdomains[] = array ('mo' => $mofile, 'domain' => $domain); |
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return true; // prevents WP loading text domains as we will load them all later |
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} |
| 268 |
|
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// saves post types and taxonomies labels for a later usage |
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function gettext($translation, $text, $domain) { |
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$this->labels[$text] = array('domain' => $domain); |
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return $translation; |
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} |
| 274 |
|
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// saves post types and taxonomies labels for a later usage |
| 276 |
function gettext_with_context($translation, $text, $context, $domain) { |
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$this->labels[$text] = array('domain' => $domain, 'context' => $context); |
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return $translation; |
| 279 |
} |
| 280 |
|
| 281 |
// translates post types and taxonomies labels once the language is known |
| 282 |
function translate_labels($type) { |
| 283 |
foreach($type->labels as $key=>$label) |
| 284 |
if (isset($this->labels[$label])) |
| 285 |
$type->labels->$key = isset($this->labels[$label]['context']) ? |
| 286 |
_x($label, $this->labels[$label]['context'], $this->labels[$label]['domain']) : |
| 287 |
__($label, $this->labels[$label]['domain']); |
| 288 |
} |
| 289 |
|
| 290 |
// NOTE: I believe there are two ways for a plugin to force the WP language |
| 291 |
// as done by xili_language: load text domains and reinitialize wp_locale with the action 'wp' |
| 292 |
// as done by qtranslate: define the locale with the action 'plugins_loaded', but in this case, the language must be specified in the url. |
| 293 |
function load_textdomains() { |
| 294 |
global $wp_rewrite, $wp_locale, $l10n; |
| 295 |
|
| 296 |
// our override_load_textdomain filter has done its job. let's remove it before calling load_textdomain |
| 297 |
remove_filter('override_load_textdomain', array(&$this, 'mofile')); |
| 298 |
remove_filter('gettext', array(&$this, 'gettext'), 10, 3); |
| 299 |
remove_filter('gettext_with_context', array(&$this, 'gettext_with_context'), 10, 4); |
| 300 |
|
| 301 |
// check there is at least one language defined and sets the current language |
| 302 |
if ($this->get_languages_list() && $this->curlang = $this->get_current_language()) { |
| 303 |
|
| 304 |
// set a cookie to remember the language. check headers have not been sent to avoid ugly error |
| 305 |
if (!headers_sent() && (!isset($_COOKIE['wordpress_polylang']) || $_COOKIE['wordpress_polylang'] != $this->curlang->slug)) |
| 306 |
setcookie('wordpress_polylang', $this->curlang->slug, time() + 31536000 /* 1 year */, COOKIEPATH, COOKIE_DOMAIN); |
| 307 |
|
| 308 |
// set all our language filters and actions |
| 309 |
$this->add_language_filters(); |
| 310 |
|
| 311 |
if (!($this->options['force_lang'] && $wp_rewrite->using_permalinks() && PLL_LANG_EARLY)) { |
| 312 |
// now we can load text domains with the right language |
| 313 |
$new_locale = get_locale(); |
| 314 |
foreach ($this->list_textdomains as $textdomain) |
| 315 |
load_textdomain( $textdomain['domain'], str_replace($this->default_locale, $new_locale, $textdomain['mo'])); |
| 316 |
|
| 317 |
// reinitializes wp_locale for weekdays and months, as well as for text direction |
| 318 |
$wp_locale->init(); |
| 319 |
$wp_locale->text_direction = get_metadata('term', $this->curlang->term_id, '_rtl', true) ? 'rtl' : 'ltr'; |
| 320 |
|
| 321 |
// translate labels of post types and taxonomies |
| 322 |
foreach ($GLOBALS['wp_taxonomies'] as $tax) |
| 323 |
$this->translate_labels($tax); |
| 324 |
foreach ($GLOBALS['wp_post_types'] as $pt) |
| 325 |
$this->translate_labels($pt); |
| 326 |
} |
| 327 |
|
| 328 |
// and finally load user defined strings |
| 329 |
$l10n['pll_string'] = $this->mo_import($this->curlang); |
| 330 |
} |
| 331 |
|
| 332 |
else { |
| 333 |
// can't work so load the text domains with WordPress default language |
| 334 |
foreach ($this->list_textdomains as $textdomain) |
| 335 |
load_textdomain($textdomain['domain'], $textdomain['mo']); |
| 336 |
} |
| 337 |
} |
| 338 |
|
| 339 |
// special actions when home page is requested |
| 340 |
// optionally redirects to the home page in the preferred language |
| 341 |
function home_requested($query = false) { |
| 342 |
// need this filter to get the right url when adding language code to all urls |
| 343 |
if ($this->options['force_lang'] && $GLOBALS['wp_rewrite']->using_permalinks()) |
| 344 |
add_filter('_get_page_link', array(&$this, 'post_link'), 10, 2); |
| 345 |
|
| 346 |
if ($this->options['hide_default'] && isset($_COOKIE['wordpress_polylang'])) |
| 347 |
$this->curlang = $this->get_language($this->options['default_lang']); |
| 348 |
else |
| 349 |
$this->curlang = $this->get_preferred_language(); // sets the language according to browser preference or default language |
| 350 |
|
| 351 |
// we are already on the right page |
| 352 |
if ($this->options['default_lang'] == $this->curlang->slug && $this->options['hide_default']) { |
| 353 |
if ($this->page_on_front && $link_id = $this->get_post($this->page_on_front, $this->curlang)) |
| 354 |
$query ? $query->set('page_id', $link_id) : set_query_var('page_id', $link_id); |
| 355 |
else |
| 356 |
$query ? $query->set('lang', $this->curlang->slug) : set_query_var('lang', $this->curlang->slug); |
| 357 |
} |
| 358 |
// redirect to the home page in the right language |
| 359 |
// test to avoid crash if get_home_url returns something wrong |
| 360 |
// FIXME why this happens? http://wordpress.org/support/topic/polylang-crashes-1 |
| 361 |
elseif (is_string($redirect = $this->get_home_url($this->curlang))) { |
| 362 |
wp_redirect($redirect); |
| 363 |
exit; |
| 364 |
} |
| 365 |
} |
| 366 |
|
| 367 |
// filters posts according to the language |
| 368 |
function pre_get_posts($query) { |
| 369 |
// don't make anything if no language has been defined yet |
| 370 |
// $this->post_types & $this->taxonomies are defined only once the action 'wp_loaded' has been fired |
| 371 |
// honor suppress_filters |
| 372 |
if (!$this->get_languages_list() || !did_action('wp_loaded') || $query->get('suppress_filters')) |
| 373 |
return $query; |
| 374 |
|
| 375 |
$qvars = $query->query_vars; |
| 376 |
|
| 377 |
// users may want to display content in a different language than the current one by setting it explicitely in the query |
| 378 |
if (!$this->first_query && $this->curlang && isset($qvars['lang']) && $qvars['lang']) |
| 379 |
return $query; |
| 380 |
|
| 381 |
$this->first_query = false; |
| 382 |
|
| 383 |
// detect our exclude pages query and returns to avoid conflicts |
| 384 |
// this test should be sufficient |
| 385 |
if (isset($qvars['tax_query'][0]['taxonomy']) && $qvars['tax_query'][0]['taxonomy'] == 'language' && |
| 386 |
isset($qvars['tax_query'][0]['operator']) && $qvars['tax_query'][0]['operator'] == 'NOT IN') |
| 387 |
return $query; |
| 388 |
|
| 389 |
// special case for wp-signup.php & wp-activate.php |
| 390 |
if (is_home() && false === strpos($_SERVER['SCRIPT_NAME'], 'index.php')) { |
| 391 |
$this->curlang = $this->get_preferred_language(); |
| 392 |
return $query; |
| 393 |
} |
| 394 |
|
| 395 |
// homepage is requested, let's set the language |
| 396 |
// take care to avoid posts page for which is_home = 1 |
| 397 |
if (!$this->curlang && empty($query->query) && (is_home() || (is_page() && $qvars['page_id'] == $this->page_on_front))) |
| 398 |
$this->home_requested($query); |
| 399 |
|
| 400 |
// redirect the language page to the homepage |
| 401 |
if ($this->options['redirect_lang'] && is_tax('language') && $this->page_on_front && (count($query->query) == 1 || (is_paged() && count($query->query) == 2))) { |
| 402 |
$qvars['page_id'] = $this->get_post($this->page_on_front, $this->get_language(get_query_var('lang'))); |
| 403 |
$query->parse_query($qvars); |
| 404 |
return $query; |
| 405 |
} |
| 406 |
|
| 407 |
// sets is_home on translated home page when it displays posts |
| 408 |
// is_home must be true on page 2, 3... too |
| 409 |
if (!$this->page_on_front && is_tax('language') && (count($query->query) == 1 || (is_paged() && count($query->query) == 2))) { |
| 410 |
$query->is_home = true; |
| 411 |
$query->is_tax = false; |
| 412 |
$this->curlang = $this->get_language(get_query_var('lang')); // sets the language now otherwise it will be too late to filter sticky posts ! |
| 413 |
} |
| 414 |
|
| 415 |
// sets the language for posts page in case the front page displays a static page |
| 416 |
if ($this->page_for_posts) { |
| 417 |
// If permalinks are used, WordPress does set and use $query->queried_object_id and sets $query->query_vars['page_id'] to 0 |
| 418 |
// and does set and use $query->query_vars['page_id'] if permalinks are not used :( |
| 419 |
if (isset($qvars['pagename']) && $qvars['pagename'] && isset($query->queried_object_id)) |
| 420 |
$page_id = $query->queried_object_id; |
| 421 |
elseif (isset($qvars['page_id'])) |
| 422 |
$page_id = $qvars['page_id']; |
| 423 |
|
| 424 |
if (isset($page_id) && $page_id && $this->get_post($page_id, $this->get_post_language($this->page_for_posts)) == $this->page_for_posts) { |
| 425 |
$this->page_for_posts = $page_id; |
| 426 |
$this->curlang = $this->get_post_language($page_id); |
| 427 |
$query->set('lang', $this->curlang->slug); |
| 428 |
$query->is_page = false; |
| 429 |
$query->is_singular = false; |
| 430 |
$query->is_home = true; |
| 431 |
$query->is_posts_page = true; |
| 432 |
} |
| 433 |
} |
| 434 |
|
| 435 |
$is_post_type = isset($qvars['post_type']) && (in_array($qvars['post_type'], $this->post_types) || |
| 436 |
(is_array($qvars['post_type']) && array_intersect($qvars['post_type'], $this->post_types)) ); |
| 437 |
|
| 438 |
// FIXME to generalize as I probably forget things |
| 439 |
$is_archive = (count($query->query) == 1 && isset($qvars['paged']) && $qvars['paged']) || |
| 440 |
(isset($qvars['m']) && $qvars['m']) || |
| 441 |
(isset($qvars['author']) && $qvars['author']) || |
| 442 |
(isset($qvars['post_type']) && is_post_type_archive() && $is_post_type); |
| 443 |
|
| 444 |
// sets 404 when the language is not set for archives needing the language in the url |
| 445 |
if (!$this->options['hide_default'] && !isset($qvars['lang']) && !$GLOBALS['wp_rewrite']->using_permalinks() && $is_archive) |
| 446 |
$query->set_404(); |
| 447 |
|
| 448 |
// sets the language in case we hide the default language |
| 449 |
if ($this->options['hide_default'] && !isset($qvars['lang']) && ($is_archive || (count($query->query) == 1 && isset($qvars['feed']) && $qvars['feed']) )) |
| 450 |
$query->set('lang', $this->options['default_lang']); |
| 451 |
|
| 452 |
// allow filtering recent posts and secondary queries by the current language |
| 453 |
// take care not to break queries for non visible post types such as nav_menu_items, attachments... |
| 454 |
if (/*$query->is_home && */$this->curlang && (!isset($qvars['post_type']) || $is_post_type )) |
| 455 |
$query->set('lang', $this->curlang->slug); |
| 456 |
|
| 457 |
// remove pages query when the language is set unless we do a search |
| 458 |
// FIXME is only search broken by this ? |
| 459 |
if (isset($qvars['lang']) && $qvars['lang'] && !isset($qvars['post_type']) && !is_search()) |
| 460 |
$query->set('post_type', 'post'); |
| 461 |
|
| 462 |
// unset the is_archive flag for language pages to prevent loading the archive template |
| 463 |
// keep archive flag for comment feed otherwise the language filter does not work |
| 464 |
if (isset($qvars['lang']) && $qvars['lang'] && !is_comment_feed() && |
| 465 |
!is_post_type_archive() && !is_date() && !is_author() && !is_category() && !is_tag() && !is_tax('post_format')) |
| 466 |
$query->is_archive = false; |
| 467 |
|
| 468 |
// unset the is_tax flag for authors pages and post types archives |
| 469 |
// FIXME Probably I should do this for other cases |
| 470 |
if (isset($qvars['lang']) && $qvars['lang'] && (is_author() || is_post_type_archive() || is_date())) { |
| 471 |
$query->is_tax = false; |
| 472 |
unset($query->queried_object); |
| 473 |
} |
| 474 |
|
| 475 |
// sets a language for theme preview |
| 476 |
if ($qvars['preview']) |
| 477 |
$query->set('lang', $this->curlang->slug); |
| 478 |
|
| 479 |
// to avoid conflict beetwen taxonomies |
| 480 |
if (isset($query->tax_query->queries)) |
| 481 |
foreach ($query->tax_query->queries as $tax) |
| 482 |
if (in_array($tax['taxonomy'], $this->taxonomies)) |
| 483 |
unset ($query->query_vars['lang']); |
| 484 |
|
| 485 |
return $query; |
| 486 |
} |
| 487 |
|
| 488 |
// filter sticky posts by current language |
| 489 |
function option_sticky_posts($posts) { |
| 490 |
if ($this->curlang && !empty($posts)) { |
| 491 |
foreach ($posts as $key=>$post_id) { |
| 492 |
if ($this->get_post_language($post_id)->term_id != $this->curlang->term_id) |
| 493 |
unset($posts[$key]); |
| 494 |
} |
| 495 |
} |
| 496 |
return $posts; |
| 497 |
} |
| 498 |
|
| 499 |
// filters categories and post tags by language when needed |
| 500 |
function terms_clauses($clauses, $taxonomies, $args) { |
| 501 |
// does nothing except on taxonomies which are filterable |
| 502 |
foreach ($taxonomies as $tax) { |
| 503 |
if (!in_array($tax, $this->taxonomies)) |
| 504 |
return $clauses; |
| 505 |
} |
| 506 |
|
| 507 |
// adds our clauses to filter by current language |
| 508 |
return $this->_terms_clauses($clauses, $this->curlang); |
| 509 |
} |
| 510 |
|
| 511 |
// meta in the html head section |
| 512 |
function wp_head() { |
| 513 |
// outputs references to translated pages (if exists) in the html head section |
| 514 |
foreach ($this->get_languages_list() as $language) { |
| 515 |
if ($language->slug != $this->curlang->slug && $url = $this->get_translation_url($language)) |
| 516 |
printf("<link hreflang='%s' href='%s' rel='alternate' />\n", esc_attr($language->slug), esc_url($url)); |
| 517 |
} |
| 518 |
} |
| 519 |
|
| 520 |
// modifies the page link in case the front page is not in the default language |
| 521 |
function page_link($link, $id) { |
| 522 |
if ($this->options['redirect_lang'] && $this->page_on_front && $id == $this->get_post($this->page_on_front, $lang = $this->get_post_language($id))) |
| 523 |
return $this->options['hide_default'] && $lang->slug == $this->options['default_lang'] ? trailingslashit($this->home) : get_term_link($lang, 'language'); |
| 524 |
|
| 525 |
if ($this->page_on_front && $this->options['hide_default'] && $id == $this->get_post($this->page_on_front, $this->options['default_lang'])) |
| 526 |
return trailingslashit($this->home); |
| 527 |
|
| 528 |
return _get_page_link($id); |
| 529 |
} |
| 530 |
|
| 531 |
// prevents redirection of the homepage when using page on front |
| 532 |
function redirect_canonical($redirect_url, $requested_url) { |
| 533 |
return $requested_url == home_url('/') || $requested_url == $this->page_link('', get_option('page_on_front')) ? false : $redirect_url; |
| 534 |
} |
| 535 |
|
| 536 |
// adds some javascript workaround knowing it's not perfect... |
| 537 |
function wp_print_footer_scripts() { |
| 538 |
// modifies the search form since filtering get_search_form won't work if the template uses searchform.php or the search form is hardcoded |
| 539 |
// don't use directly e[0] just in case there is somewhere else an element named 's' |
| 540 |
// check before if the hidden input has not already been introduced by get_search_form (FIXME: is there a way to improve this ? |
| 541 |
// thanks to AndyDeGroo for improving the code for compatility with old browsers |
| 542 |
// http://wordpress.org/support/topic/development-of-polylang-version-08?replies=6#post-2645559 |
| 543 |
|
| 544 |
$lang = esc_js($this->curlang->slug); |
| 545 |
$js = "//<![CDATA[ |
| 546 |
e = document.getElementsByName('s'); |
| 547 |
for (i = 0; i < e.length; i++) { |
| 548 |
if (e[i].tagName.toUpperCase() == 'INPUT') { |
| 549 |
s = e[i].parentNode.parentNode.children; |
| 550 |
l = 0; |
| 551 |
for (j = 0; j < s.length; j++) { |
| 552 |
if (s[j].name == 'lang') { |
| 553 |
l = 1; |
| 554 |
} |
| 555 |
} |
| 556 |
if ( l == 0) { |
| 557 |
var ih = document.createElement('input'); |
| 558 |
ih.type = 'hidden'; |
| 559 |
ih.name = 'lang'; |
| 560 |
ih.value = '$lang'; |
| 561 |
e[i].parentNode.appendChild(ih); |
| 562 |
} |
| 563 |
} |
| 564 |
} |
| 565 |
//]]>"; |
| 566 |
echo "<script type='text/javascript'>" .$js. "</script>"; |
| 567 |
} |
| 568 |
|
| 569 |
// adds the language information in the search form |
| 570 |
// does not work if searchform.php is used or if the search form is hardcoded in another template file |
| 571 |
function get_search_form($form) { |
| 572 |
if ($form) |
| 573 |
$form = $GLOBALS['wp_rewrite']->using_permalinks() ? |
| 574 |
str_replace(trailingslashit($this->home), $this->get_home_url($this->curlang, true), $form) : |
| 575 |
str_replace('</form>', '<input type="hidden" name="lang" value="'.esc_attr($this->curlang->slug).'" /></form>', $form); |
| 576 |
|
| 577 |
return $form; |
| 578 |
} |
| 579 |
|
| 580 |
// rewrites the admin bar search form to include the language |
| 581 |
function admin_bar_search_menu($wp_admin_bar) { |
| 582 |
global $wp_rewrite; |
| 583 |
|
| 584 |
$title = sprintf('<form action="%s" method="get" id="adminbarsearch"> |
| 585 |
<input class="adminbar-input" name="s" id="adminbar-search" tabindex="10" type="text" value="" maxlength="150" /> |
| 586 |
<input type="submit" class="adminbar-button" value="%s"/>%s</form>', |
| 587 |
$wp_rewrite->using_permalinks() ? $this->get_home_url($this->curlang, true) : esc_url($this->home), |
| 588 |
__('Search'), |
| 589 |
$wp_rewrite->using_permalinks() ? '' : sprintf('<input type="hidden" name="lang" value="%s" />', esc_attr($this->curlang->slug)) |
| 590 |
); |
| 591 |
|
| 592 |
$wp_admin_bar->add_menu(array( |
| 593 |
'parent' => 'top-secondary', |
| 594 |
'id' => 'search', |
| 595 |
'title' => $title, |
| 596 |
'meta' => array('class' => 'admin-bar-search', 'tabindex' => -1) |
| 597 |
)); |
| 598 |
} |
| 599 |
|
| 600 |
// excludes pages which are not in the current language for wp_list_pages |
| 601 |
// useful for the pages widget |
| 602 |
function wp_list_pages_excludes($pages) { |
| 603 |
return array_merge($pages, $this->exclude_pages($this->curlang->term_id)); |
| 604 |
} |
| 605 |
|
| 606 |
// filters the comments according to the current language mainly for the recent comments widget |
| 607 |
function comments_clauses($clauses, $comment_query) { |
| 608 |
return $this->_comments_clauses($clauses, $this->curlang); |
| 609 |
} |
| 610 |
|
| 611 |
// modifies the sql request for wp_get_archives an get_adjacent_post to filter by the current language |
| 612 |
function posts_join($sql) { |
| 613 |
global $wpdb; |
| 614 |
return $sql . $wpdb->prepare(" INNER JOIN $wpdb->term_relationships AS pll_tr ON pll_tr.object_id = ID"); |
| 615 |
} |
| 616 |
|
| 617 |
// modifies the sql request for wp_get_archives and get_adjacent_post to filter by the current language |
| 618 |
function posts_where($sql) { |
| 619 |
global $wpdb; |
| 620 |
$id = $this->curlang->term_taxonomy_id; |
| 621 |
return $sql . $wpdb->prepare(" AND pll_tr.term_taxonomy_id IN ($id)"); |
| 622 |
} |
| 623 |
|
| 624 |
// modifies the author and date links to add the language parameter (as well as feed link) |
| 625 |
function archive_link($link) { |
| 626 |
return $this->add_language_to_link($link, $this->curlang); |
| 627 |
} |
| 628 |
|
| 629 |
// returns the url of the translation (if exists) of the current page |
| 630 |
function get_translation_url($language) { |
| 631 |
global $wp_query, $wp_rewrite; |
| 632 |
$qvars = $wp_query->query; |
| 633 |
$hide = $this->options['default_lang'] == $language->slug && $this->options['hide_default']; |
| 634 |
|
| 635 |
// post and attachment |
| 636 |
if (is_single() && (PLL_MEDIA_SUPPORT || !is_attachment()) && $id = $this->get_post($wp_query->queried_object_id, $language)) |
| 637 |
$url = get_permalink($id); |
| 638 |
|
| 639 |
// page for posts |
| 640 |
elseif (get_option('show_on_front') == 'page' && isset($wp_query->queried_object_id) && $wp_query->queried_object_id && |
| 641 |
$wp_query->queried_object_id == $this->page_for_posts && ($id = $this->get_post($this->page_for_posts, $language))) |
| 642 |
$url = get_permalink($id); |
| 643 |
|
| 644 |
elseif (is_page() && $id = $this->get_post($wp_query->queried_object_id, $language)) |
| 645 |
$url = $hide && $id == $this->get_post($this->page_on_front, $language) ? $this->home : get_page_link($id); |
| 646 |
|
| 647 |
elseif (!is_tax('post_format') && !is_tax('language') && (is_category() || is_tag() || is_tax()) ) { |
| 648 |
$term = get_queried_object(); |
| 649 |
$lang = $this->get_term_language($term->term_id); |
| 650 |
|
| 651 |
if (!$lang || $language->slug == $lang->slug) |
| 652 |
$url = get_term_link($term, $term->taxonomy); // self link |
| 653 |
elseif ($link_id = $this->get_translation('term', $term->term_id, $language)) |
| 654 |
$url = get_term_link(get_term($link_id, $term->taxonomy), $term->taxonomy); |
| 655 |
} |
| 656 |
|
| 657 |
// don't test if there are existing translations before creating the url as it would be very expensive in sql queries |
| 658 |
elseif (is_archive()) { |
| 659 |
if ($wp_rewrite->using_permalinks()) { |
| 660 |
$filters = array('author_link', 'post_type_archive_link', 'year_link', 'month_link', 'day_link'); |
| 661 |
|
| 662 |
// prevents filtering links by current language |
| 663 |
remove_filter('term_link', array(&$this, 'term_link')); // for post format |
| 664 |
foreach ($filters as $filter) |
| 665 |
remove_filter($filter, array(&$this, 'archive_link')); |
| 666 |
|
| 667 |
if (is_author()) |
| 668 |
$url = $this->add_language_to_link(get_author_posts_url(0, $qvars['author_name']), $language); |
| 669 |
|
| 670 |
if (is_year()) |
| 671 |
$url = $this->add_language_to_link(get_year_link($qvars['year']), $language); |
| 672 |
|
| 673 |
if (is_month()) |
| 674 |
$url = $this->add_language_to_link(get_month_link($qvars['year'], $qvars['monthnum']), $language); |
| 675 |
|
| 676 |
if (is_day()) |
| 677 |
$url = $this->add_language_to_link(get_day_link($qvars['year'], $qvars['monthnum'], $qvars['day']), $language); |
| 678 |
|
| 679 |
if (is_post_type_archive()) |
| 680 |
$url = $this->add_language_to_link(get_post_type_archive_link($qvars['post_type']), $language); |
| 681 |
|
| 682 |
if (is_tax('post_format')) |
| 683 |
$url = $this->add_language_to_link(get_post_format_link($qvars['post_format']), $language); |
| 684 |
|
| 685 |
// put our language filters again |
| 686 |
add_filter('term_link', array(&$this, 'term_link'), 10, 3); |
| 687 |
foreach ($filters as $filter) |
| 688 |
add_filter($filter, array(&$this, 'archive_link')); |
| 689 |
} |
| 690 |
else { |
| 691 |
$url = $hide ? remove_query_arg('lang') : add_query_arg('lang', $language->slug); |
| 692 |
$url = remove_query_arg('paged', $url); |
| 693 |
} |
| 694 |
} |
| 695 |
|
| 696 |
elseif (is_search()) { |
| 697 |
if ($wp_rewrite->using_permalinks()) |
| 698 |
$url = $this->add_language_to_link($this->home.'/?'.$_SERVER['QUERY_STRING'], $language); |
| 699 |
else { |
| 700 |
$url = add_query_arg('lang', $language->slug); |
| 701 |
$url = remove_query_arg('paged', $url); |
| 702 |
} |
| 703 |
} |
| 704 |
|
| 705 |
elseif (is_home() || is_tax('language') ) |
| 706 |
$url = $this->get_home_url($language); |
| 707 |
|
| 708 |
return isset($url) ? $url : null; |
| 709 |
} |
| 710 |
|
| 711 |
// filters the nav menus according to the current language when called from get_nav_menu_locations() |
| 712 |
// mainly for Artisteer generated themes |
| 713 |
function nav_menu_locations($menus) { |
| 714 |
if (is_array($menus)) { |
| 715 |
foreach($menus as $location => $menu) { |
| 716 |
$menu_lang = get_option('polylang_nav_menus'); |
| 717 |
if (isset($menu_lang[$location][$this->curlang->slug])) |
| 718 |
$menus[$location] = $menu_lang[$location][$this->curlang->slug]; |
| 719 |
} |
| 720 |
} |
| 721 |
return $menus; |
| 722 |
} |
| 723 |
|
| 724 |
// filters the nav menus according to the current language when called from wp_nav_menus |
| 725 |
function wp_nav_menu_args($args) { |
| 726 |
if (/*!$args['menu'] &&*/ $args['theme_location']) { |
| 727 |
$menu_lang = get_option('polylang_nav_menus'); |
| 728 |
if (isset($menu_lang[$args['theme_location']][$this->curlang->slug])) |
| 729 |
$args['menu'] = $menu_lang[$args['theme_location']][$this->curlang->slug]; |
| 730 |
} |
| 731 |
return $args; |
| 732 |
} |
| 733 |
|
| 734 |
// adds the language switcher at the end of the menu |
| 735 |
function wp_nav_menu_items($items, $args) { |
| 736 |
$menu_lang = get_option('polylang_nav_menus'); |
| 737 |
return isset($args->theme_location) && isset($menu_lang[$args->theme_location]['switcher']) && $menu_lang[$args->theme_location]['switcher'] ? |
| 738 |
$items . $this->the_languages(array_merge($menu_lang[$args->theme_location], array('menu' => 1, 'echo' => 0))) : $items; |
| 739 |
} |
| 740 |
|
| 741 |
// filters the widgets according to the current language |
| 742 |
function widget_display_callback($instance, $widget, $args) { |
| 743 |
$widget_lang = get_option('polylang_widgets'); |
| 744 |
// don't display if a language filter is set and this is not the current one |
| 745 |
return isset($widget_lang[$widget->id]) && $widget_lang[$widget->id] && $widget_lang[$widget->id] != $this->curlang->slug ? false : $instance; |
| 746 |
} |
| 747 |
|
| 748 |
// translates widget titles |
| 749 |
function widget_title($title) { |
| 750 |
return __($title, 'pll_string'); |
| 751 |
} |
| 752 |
|
| 753 |
// translates site title and tagline |
| 754 |
function bloginfo($output, $show) { |
| 755 |
if (in_array($show, array('', 'name', 'description'))) { |
| 756 |
$output = __($output, 'pll_string'); |
| 757 |
if (current_filter() == 'get_bloginfo_rss') |
| 758 |
$output = convert_chars($output); |
| 759 |
} |
| 760 |
|
| 761 |
return $output; |
| 762 |
} |
| 763 |
|
| 764 |
// translates biography |
| 765 |
function get_user_metadata($null, $id, $meta_key, $single) { |
| 766 |
if ($meta_key == 'description') |
| 767 |
return get_user_meta($id, 'description_'.$this->curlang->slug, true); |
| 768 |
return $null; |
| 769 |
} |
| 770 |
|
| 771 |
// translates page for posts and page on front |
| 772 |
function translate_page($value) { |
| 773 |
return isset($this->curlang) && $value ? $this->get_post($value, $this->curlang) : $value; |
| 774 |
} |
| 775 |
|
| 776 |
// filters the home url to get the right language |
| 777 |
function home_url($url) { |
| 778 |
if (!did_action('template_redirect') || rtrim($url,'/') != $this->home) |
| 779 |
return $url; |
| 780 |
|
| 781 |
$theme = get_theme_root(); |
| 782 |
foreach (debug_backtrace() as $trace) { |
| 783 |
// search form |
| 784 |
if (isset($trace['file']) && strpos($trace['file'], 'searchform.php')) |
| 785 |
return $GLOBALS['wp_rewrite']->using_permalinks() ? $this->get_home_url($this->curlang, true) : $url; |
| 786 |
|
| 787 |
$ok = $trace['function'] == 'wp_nav_menu' || |
| 788 |
// direct call from the theme |
| 789 |
(isset($trace['file']) && strpos($trace['file'], $theme) !== false && |
| 790 |
in_array($trace['function'], array('home_url', 'bloginfo', 'get_bloginfo')) ); |
| 791 |
|
| 792 |
if ($ok) |
| 793 |
return $this->get_home_url($this->curlang); |
| 794 |
} |
| 795 |
|
| 796 |
return $url; |
| 797 |
} |
| 798 |
|
| 799 |
// returns the home url in the right language |
| 800 |
function get_home_url($language = '', $is_search = false) { |
| 801 |
if ($language == '') |
| 802 |
$language = $this->curlang; |
| 803 |
|
| 804 |
if ($this->options['default_lang'] == $language->slug && $this->options['hide_default']) |
| 805 |
return trailingslashit($this->home); |
| 806 |
|
| 807 |
// a static page is used as front page : /!\ don't use get_page_link to avoid infinite loop |
| 808 |
// don't use this for search form |
| 809 |
if (!$is_search && $this->page_on_front && $id = $this->get_post($this->page_on_front, $language)) |
| 810 |
return $this->page_link('', $id); |
| 811 |
|
| 812 |
return get_term_link($language, 'language'); |
| 813 |
} |
| 814 |
|
| 815 |
// displays (or returns) the language switcher |
| 816 |
function the_languages($args = '') { |
| 817 |
$defaults = array( |
| 818 |
'dropdown' => 0, // display as list and not as dropdown |
| 819 |
'echo' => 1, // echoes the list |
| 820 |
'hide_if_empty' => 1, // hides languages with no posts (or pages) |
| 821 |
'menu' => '0', // not for nav menu |
| 822 |
'show_flags' => 0, // don't show flags |
| 823 |
'show_names' => 1, // show language names |
| 824 |
'display_names_as' => 'name', // valid options are slug and name |
| 825 |
'force_home' => 0, // tries to find a translation |
| 826 |
'hide_if_no_translation' => 0, // don't hide the link if there is no translation |
| 827 |
'hide_current' => 0, // don't hide current language |
| 828 |
'post_id' => null, // if not null, link to translations of post defined by post_id |
| 829 |
); |
| 830 |
extract(wp_parse_args($args, $defaults)); |
| 831 |
|
| 832 |
if ($dropdown) |
| 833 |
$output = $this->dropdown_languages(array('hide_empty' => $hide_if_empty, 'selected' => $this->curlang->slug)); |
| 834 |
|
| 835 |
else { |
| 836 |
$output = ''; |
| 837 |
|
| 838 |
foreach ($this->get_languages_list(array('hide_empty' => $hide_if_empty)) as $language) { |
| 839 |
// hide current language |
| 840 |
if ($this->curlang->term_id == $language->term_id && $hide_current) |
| 841 |
continue; |
| 842 |
|
| 843 |
$url = $post_id !== null && ($tr_id = $this->get_post($post_id, $language)) ? get_permalink($tr_id) : |
| 844 |
$post_id === null && !$force_home ? $this->get_translation_url($language) : null; |
| 845 |
|
| 846 |
$url = apply_filters('pll_the_language_link', $url, $language->slug, $language->description); |
| 847 |
|
| 848 |
// hide if no translation exists |
| 849 |
if (!isset($url) && $hide_if_no_translation) |
| 850 |
continue; |
| 851 |
|
| 852 |
$url = isset($url) ? $url : $this->get_home_url($language); // if the page is not translated, link to the home page |
| 853 |
|
| 854 |
$class = 'lang-item lang-item-'.esc_attr($language->term_id); |
| 855 |
$class .= $language->term_id == $this->curlang->term_id ? ' current-lang' : ''; |
| 856 |
$class .= $menu ? ' menu-item' : ''; |
| 857 |
|
| 858 |
$flag = $show_flags ? $this->get_flag($language) : ''; |
| 859 |
$name = $show_names || !$show_flags ? esc_html($display_names_as == 'slug' ? $language->slug : $language->name) : ''; |
| 860 |
|
| 861 |
$output .= sprintf("<li class='%s'><a hreflang='%s' href='%s'>%s</a></li>\n", |
| 862 |
$class, esc_attr($language->slug), esc_url($url), $show_flags && $show_names ? $flag.' '.$name : $flag.$name); |
| 863 |
} |
| 864 |
} |
| 865 |
|
| 866 |
$output = apply_filters('pll_the_languages', $output, $args); |
| 867 |
|
| 868 |
if(!$echo) |
| 869 |
return $output; |
| 870 |
echo $output; |
| 871 |
} |
| 872 |
|
| 873 |
// just returns the current language for API |
| 874 |
function current_language($args) { |
| 875 |
return !isset($this->curlang) ? false : |
| 876 |
($args == 'name' ? $this->curlang->name : |
| 877 |
($args == 'locale' ? $this->curlang->description : |
| 878 |
$this->curlang->slug)); |
| 879 |
} |
| 880 |
} |
| 881 |
?> |
| 882 |
|
