| 1 |
<?php |
| 2 |
/** |
| 3 |
* @package Polylang |
| 4 |
*/ |
| 5 |
|
| 6 |
/** |
| 7 |
* A class to handle the WPML API based on hooks, introduced since WPML 3.2. |
| 8 |
* It partly relies on the legacy API. |
| 9 |
* |
| 10 |
* @see https://wpml.org/documentation/support/wpml-coding-api/wpml-hooks-reference/ |
| 11 |
* |
| 12 |
* @since 2.0 |
| 13 |
*/ |
| 14 |
class PLL_WPML_API { |
| 15 |
/** |
| 16 |
* Stores the original language when the language is switched. |
| 17 |
* |
| 18 |
* @var PLL_Language|null |
| 19 |
*/ |
| 20 |
private static $original_language = null; |
| 21 |
|
| 22 |
/** |
| 23 |
* Constructor. |
| 24 |
* |
| 25 |
* @since 2.0 |
| 26 |
*/ |
| 27 |
public function __construct() { |
| 28 |
/* |
| 29 |
* Site Wide Language information. |
| 30 |
*/ |
| 31 |
add_filter( 'wpml_active_languages', array( $this, 'wpml_active_languages' ), 10, 2 ); |
| 32 |
add_filter( 'wpml_display_language_names', array( $this, 'wpml_display_language_names' ), 10, 2 ); // Because we don't translate language names, 3rd to 5th parameters are not supported. |
| 33 |
// wpml_translated_language_name => not applicable. |
| 34 |
add_filter( 'wpml_current_language', 'pll_current_language', 10, 0 ); |
| 35 |
add_filter( 'wpml_default_language', 'pll_default_language', 10, 0 ); |
| 36 |
// wpml_add_language_selector => not implemented. |
| 37 |
// wpml_footer_language_selector => not applicable. |
| 38 |
add_action( 'wpml_add_language_form_field', array( $this, 'wpml_add_language_form_field' ) ); |
| 39 |
add_filter( 'wpml_language_is_active', array( $this, 'wpml_language_is_active' ), 10, 2 ); |
| 40 |
add_filter( 'wpml_is_rtl', array( $this, 'wpml_is_rtl' ) ); |
| 41 |
// wpml_language_form_input_field => See wpml_add_language_form_field |
| 42 |
// wpml_language_has_switched => See wpml_switch_language |
| 43 |
add_filter( 'wpml_element_trid', array( $this, 'wpml_element_trid' ), 10, 3 ); |
| 44 |
add_filter( 'wpml_get_element_translations', array( $this, 'wpml_get_element_translations' ), 10, 3 ); |
| 45 |
// wpml_language_switcher => not implemented. |
| 46 |
// wpml_browser_redirect_language_params => not implemented. |
| 47 |
// wpml_enqueue_browser_redirect_language => not applicable. |
| 48 |
// wpml_enqueued_browser_redirect_language => not applicable. |
| 49 |
// wpml_encode_string => not applicable. |
| 50 |
// wpml_decode_string => not applicable. |
| 51 |
|
| 52 |
/* |
| 53 |
* Retrieving Language Information for Content. |
| 54 |
*/ |
| 55 |
add_filter( 'wpml_post_language_details', 'wpml_get_language_information', 10, 2 ); |
| 56 |
add_action( 'wpml_switch_language', array( __CLASS__, 'wpml_switch_language' ), 10, 2 ); |
| 57 |
add_filter( 'wpml_element_language_code', array( $this, 'wpml_element_language_code' ), 10, 2 ); |
| 58 |
// wpml_element_language_details => not applicable. |
| 59 |
|
| 60 |
/* |
| 61 |
* Retrieving Localized Content. |
| 62 |
*/ |
| 63 |
add_filter( 'wpml_home_url', 'pll_home_url', 10, 0 ); |
| 64 |
add_filter( 'wpml_element_link', 'icl_link_to_element', 10, 7 ); |
| 65 |
add_filter( 'wpml_object_id', 'icl_object_id', 10, 4 ); |
| 66 |
add_filter( 'wpml_translate_single_string', array( $this, 'wpml_translate_single_string' ), 10, 4 ); |
| 67 |
// wpml_translate_string => not applicable. |
| 68 |
// wpml_unfiltered_admin_string => not implemented. |
| 69 |
add_filter( 'wpml_permalink', array( $this, 'wpml_permalink' ), 10, 2 ); |
| 70 |
// wpml_elements_without_translations => not implemented. |
| 71 |
add_filter( 'wpml_get_translated_slug', array( $this, 'wpml_get_translated_slug' ), 10, 3 ); |
| 72 |
|
| 73 |
/* |
| 74 |
* Finding the Translation State of Content. |
| 75 |
*/ |
| 76 |
// wpml_element_translation_type => not implemented. |
| 77 |
add_filter( 'wpml_element_has_translations', array( $this, 'wpml_element_has_translations' ), 10, 3 ); |
| 78 |
// wpml_master_post_from_duplicate => not applicable. |
| 79 |
// wpml_post_duplicates => not applicable. |
| 80 |
|
| 81 |
/* |
| 82 |
* Inserting Content. |
| 83 |
*/ |
| 84 |
// wpml_admin_make_post_duplicates => not applicable. |
| 85 |
// wpml_make_post_duplicates => not applicable. |
| 86 |
add_action( 'wpml_register_single_string', 'icl_register_string', 10, 3 ); |
| 87 |
// wpml_register_string => not applicable. |
| 88 |
// wpml_register_string_packages => not applicable. |
| 89 |
// wpml_delete_package_action => not applicable. |
| 90 |
// wpml_show_package_language_ui => not applicable. |
| 91 |
// wpml_set_element_language_details => not implemented. |
| 92 |
// wpml_multilingual_options => not applicable. |
| 93 |
|
| 94 |
/* |
| 95 |
* Miscellaneous |
| 96 |
*/ |
| 97 |
// wpml_element_type => not applicable. |
| 98 |
// wpml_setting => not applicable. |
| 99 |
// wpml_sub_setting => not applicable. |
| 100 |
// wpml_editor_cf_to_display => not applicable. |
| 101 |
// wpml_tm_save_translation_cf => not implemented. |
| 102 |
// wpml_tm_xliff_export_translated_cf => not applicable. |
| 103 |
// wpml_tm_xliff_export_original_cf => not applicable. |
| 104 |
// wpml_duplicate_generic_string => not applicable. |
| 105 |
// wpml_translatable_user_meta_fields => not implemented. |
| 106 |
// wpml_cross_domain_language_data => not applicable. |
| 107 |
// wpml_get_cross_domain_language_data => not applicable. |
| 108 |
// wpml_loaded => not applicable. |
| 109 |
// wpml_st_loaded => not applicable. |
| 110 |
// wpml_tm_loaded => not applicable. |
| 111 |
// wpml_hide_management_column (3.4.1) => not applicable. |
| 112 |
// wpml_ls_directories_to_scan => not applicable. |
| 113 |
// wpml_ls_model_css_classes => not applicable. |
| 114 |
// wpml_ls_model_language_css_classes => not applicable. |
| 115 |
// wpml_tf_feedback_open_link => not applicable. |
| 116 |
// wpml_sync_custom_field => not implemented. |
| 117 |
// wpml_sync_all_custom_fields => not implemented. |
| 118 |
// wpml_is_redirected => not implemented. |
| 119 |
|
| 120 |
/* |
| 121 |
* Updating Content |
| 122 |
*/ |
| 123 |
// wpml_set_translation_mode_for_post_type => not implemented. |
| 124 |
|
| 125 |
/* |
| 126 |
* Undocumented |
| 127 |
*/ |
| 128 |
add_filter( 'wpml_is_translated_post_type', array( $this, 'wpml_is_translated_post_type' ), 10, 2 ); |
| 129 |
add_filter( 'wpml_is_translated_taxonomy', array( $this, 'wpml_is_translated_taxonomy' ), 10, 2 ); |
| 130 |
} |
| 131 |
|
| 132 |
/** |
| 133 |
* Get a list of the languages enabled for a site. |
| 134 |
* |
| 135 |
* @since 2.0 |
| 136 |
* |
| 137 |
* @param mixed $null Not used. |
| 138 |
* @param array| string $args See arguments of icl_get_languages(). |
| 139 |
* @return array Array of arrays per language. |
| 140 |
*/ |
| 141 |
public function wpml_active_languages( $null, $args = '' ) { |
| 142 |
return icl_get_languages( $args ); |
| 143 |
} |
| 144 |
|
| 145 |
/** |
| 146 |
* In WPML, get a language's native and translated name for display in a custom language switcher |
| 147 |
* Since Polylang does not implement the translated name, always returns only the native name, |
| 148 |
* so the 3rd, 4th and 5th parameters are not used. |
| 149 |
* |
| 150 |
* @since 2.2 |
| 151 |
* |
| 152 |
* @param mixed $null Not used. |
| 153 |
* @param string $native_name The language native name. |
| 154 |
* @return string |
| 155 |
*/ |
| 156 |
public function wpml_display_language_names( $null, $native_name ) { |
| 157 |
return $native_name; |
| 158 |
} |
| 159 |
|
| 160 |
/** |
| 161 |
* Returns an HTML hidden input field with name=”lang” and as value the current language. |
| 162 |
* |
| 163 |
* @since 2.0 |
| 164 |
* |
| 165 |
* @return void |
| 166 |
*/ |
| 167 |
public function wpml_add_language_form_field() { |
| 168 |
$lang = pll_current_language(); |
| 169 |
$field = sprintf( '<input type="hidden" name="lang" value="%s" />', esc_attr( $lang ) ); |
| 170 |
$field = apply_filters( 'wpml_language_form_input_field', $field, $lang ); |
| 171 |
echo $field; // phpcs:ignore WordPress.Security.EscapeOutput |
| 172 |
} |
| 173 |
|
| 174 |
/** |
| 175 |
* Find out if a specific language is enabled for the site. |
| 176 |
* |
| 177 |
* @since 2.0 |
| 178 |
* |
| 179 |
* @param mixed $null Not used. |
| 180 |
* @param string $slug Language code. |
| 181 |
* @return bool |
| 182 |
*/ |
| 183 |
public function wpml_language_is_active( $null, $slug ) { |
| 184 |
$language = PLL()->model->get_language( $slug ); |
| 185 |
return ! empty( $language ) && $language->active; |
| 186 |
} |
| 187 |
|
| 188 |
/** |
| 189 |
* Find out whether the current language text direction is RTL or not. |
| 190 |
* |
| 191 |
* @since 2.0 |
| 192 |
* |
| 193 |
* @return bool |
| 194 |
*/ |
| 195 |
public function wpml_is_rtl() { |
| 196 |
return pll_current_language( 'is_rtl' ); |
| 197 |
} |
| 198 |
|
| 199 |
/** |
| 200 |
* Returns the id of the translation group of a translated element. |
| 201 |
* |
| 202 |
* @since 3.4 |
| 203 |
* |
| 204 |
* @param mixed $empty_value Not used. |
| 205 |
* @param int $element_id The id of the item, post id for posts, term_taxonomy_id for terms. |
| 206 |
* @param string $element_type Optional. The type of an element. |
| 207 |
* @return int |
| 208 |
*/ |
| 209 |
public function wpml_element_trid( $empty_value, $element_id, $element_type = 'post_post' ) { |
| 210 |
if ( 0 === strpos( $element_type, 'tax_' ) ) { |
| 211 |
$element = get_term_by( 'term_taxonomy_id', $element_id ); |
| 212 |
if ( $element instanceof WP_Term ) { |
| 213 |
$tr_term = PLL()->model->term->get_object_term( $element->term_id, 'term_translations' ); |
| 214 |
} |
| 215 |
} |
| 216 |
|
| 217 |
if ( 0 === strpos( $element_type, 'post_' ) ) { |
| 218 |
$tr_term = PLL()->model->post->get_object_term( $element_id, 'post_translations' ); |
| 219 |
} |
| 220 |
|
| 221 |
if ( isset( $tr_term ) && $tr_term instanceof WP_Term ) { |
| 222 |
return $tr_term->term_id; |
| 223 |
} |
| 224 |
|
| 225 |
return 0; |
| 226 |
} |
| 227 |
|
| 228 |
/** |
| 229 |
* Returns the element translations info using the ID of the translation group. |
| 230 |
* |
| 231 |
* @since 3.4 |
| 232 |
* |
| 233 |
* @param mixed $empty_value Not used. |
| 234 |
* @param int $trid The ID of the translation group. |
| 235 |
* @param string $element_type Optional. The type of an element. |
| 236 |
* @return stdClass[] |
| 237 |
*/ |
| 238 |
public function wpml_get_element_translations( $empty_value, $trid, $element_type = 'post_post' ) { |
| 239 |
$return = array(); |
| 240 |
|
| 241 |
if ( 0 === strpos( $element_type, 'tax_' ) ) { |
| 242 |
$translations = PLL()->model->term->get_translations_from_term_id( $trid ); |
| 243 |
if ( empty( $translations ) ) { |
| 244 |
return array(); |
| 245 |
} |
| 246 |
|
| 247 |
$original = min( $translations ); // We suppose that the original is the first term created. |
| 248 |
$source_lang = array_search( $original, $translations ); |
| 249 |
|
| 250 |
$args = array( |
| 251 |
'include' => $translations, |
| 252 |
'hide_empty' => false, |
| 253 |
); |
| 254 |
$_terms = get_terms( $args ); |
| 255 |
|
| 256 |
if ( ! is_array( $_terms ) ) { |
| 257 |
return array(); |
| 258 |
} |
| 259 |
|
| 260 |
$terms = array(); |
| 261 |
foreach ( $_terms as $term ) { |
| 262 |
$terms[ $term->term_id ] = $term; |
| 263 |
} |
| 264 |
|
| 265 |
foreach ( $translations as $lang => $term_id ) { |
| 266 |
if ( empty( $terms[ $term_id ] ) ) { |
| 267 |
continue; |
| 268 |
} |
| 269 |
|
| 270 |
/* |
| 271 |
* It seems that WPML fills the `instances` property with the total number of posts |
| 272 |
* related to this term, while `WP_Term::$count` includes only *published* posts. |
| 273 |
* We intentionnally accept this difference to avoid extra DB queries. |
| 274 |
*/ |
| 275 |
$return[ $lang ] = (object) array( |
| 276 |
'translation_id' => '0', // We have nothing equivalent. |
| 277 |
'language_code' => $lang, |
| 278 |
'element_id' => (string) $terms[ $term_id ]->term_taxonomy_id, |
| 279 |
'source_language_code' => $source_lang === $lang ? null : $source_lang, |
| 280 |
'element_type' => $element_type, |
| 281 |
'original' => $original === $term_id ? '1' : '0', |
| 282 |
'name' => $terms[ $term_id ]->name, |
| 283 |
'term_id' => (string) $term_id, |
| 284 |
'instances' => (string) $terms[ $term_id ]->count, |
| 285 |
); |
| 286 |
} |
| 287 |
} |
| 288 |
|
| 289 |
if ( 0 === strpos( $element_type, 'post_' ) ) { |
| 290 |
$translations = PLL()->model->post->get_translations_from_term_id( $trid ); |
| 291 |
if ( empty( $translations ) ) { |
| 292 |
return array(); |
| 293 |
} |
| 294 |
|
| 295 |
$original = min( $translations ); // We suppose that the original is the first post created. |
| 296 |
$source_lang = array_search( $original, $translations ); |
| 297 |
|
| 298 |
$args = array( |
| 299 |
'post__in' => $translations, |
| 300 |
'no_paging' => true, |
| 301 |
'posts_per_page' => -1, |
| 302 |
'update_post_meta_cache' => false, |
| 303 |
'update_post_term_cache' => false, |
| 304 |
'lang' => '', |
| 305 |
); |
| 306 |
$_posts = get_posts( $args ); |
| 307 |
|
| 308 |
$posts = array(); |
| 309 |
foreach ( $_posts as $post ) { |
| 310 |
$posts[ $post->ID ] = $post; |
| 311 |
} |
| 312 |
|
| 313 |
foreach ( $translations as $lang => $post_id ) { |
| 314 |
if ( empty( $posts[ $post_id ] ) ) { |
| 315 |
continue; |
| 316 |
} |
| 317 |
|
| 318 |
$return[ $lang ] = (object) array( |
| 319 |
'translation_id' => '0', // We have nothing equivalent. |
| 320 |
'language_code' => $lang, |
| 321 |
'element_id' => (string) $post_id, |
| 322 |
'source_language_code' => $source_lang === $lang ? null : $source_lang, |
| 323 |
'element_type' => $element_type, |
| 324 |
'original' => $original === $post_id ? '1' : '0', |
| 325 |
'post_title' => $posts[ $post_id ]->post_title, |
| 326 |
'post_status' => $posts[ $post_id ]->post_status, |
| 327 |
); |
| 328 |
} |
| 329 |
} |
| 330 |
|
| 331 |
return $return; |
| 332 |
} |
| 333 |
|
| 334 |
/** |
| 335 |
* Switches whole site to the given language or restores the language that was set when first calling this function. |
| 336 |
* Unlike the WPML original action, it is not possible to set the current language and the cookie to different values. |
| 337 |
* |
| 338 |
* @since 2.7 |
| 339 |
* |
| 340 |
* @param null|string $lang Language code to switch into, restores the original language if null. |
| 341 |
* @param bool|string $cookie Optionally also switches the cookie. |
| 342 |
* @return void |
| 343 |
*/ |
| 344 |
public static function wpml_switch_language( $lang = null, $cookie = false ) { |
| 345 |
if ( null === self::$original_language ) { |
| 346 |
self::$original_language = PLL()->curlang; |
| 347 |
} |
| 348 |
|
| 349 |
if ( empty( $lang ) ) { |
| 350 |
PLL()->curlang = self::$original_language; |
| 351 |
} elseif ( 'all' === $lang ) { |
| 352 |
PLL()->curlang = null; |
| 353 |
} elseif ( in_array( $lang, pll_languages_list() ) ) { |
| 354 |
PLL()->curlang = PLL()->model->get_language( $lang ); |
| 355 |
} |
| 356 |
|
| 357 |
if ( $cookie && isset( PLL()->choose_lang ) ) { |
| 358 |
PLL()->choose_lang->maybe_setcookie(); |
| 359 |
} |
| 360 |
|
| 361 |
do_action( 'wpml_language_has_switched', $lang, $cookie, self::$original_language ); |
| 362 |
} |
| 363 |
|
| 364 |
/** |
| 365 |
* Get the language code for a translatable element. |
| 366 |
* |
| 367 |
* @since 2.0 |
| 368 |
* |
| 369 |
* @param mixed $language_code A 2-letter language code. |
| 370 |
* @param array $args An array with two keys element_id => post_id or term_taxonomy_id, element_type => post type or taxonomy |
| 371 |
* @return string|null |
| 372 |
*/ |
| 373 |
public function wpml_element_language_code( $language_code, $args ) { |
| 374 |
$type = $args['element_type']; |
| 375 |
$id = $args['element_id']; |
| 376 |
|
| 377 |
if ( 'post' === $type || pll_is_translated_post_type( $type ) ) { |
| 378 |
$language = pll_get_post_language( $id ); |
| 379 |
return is_string( $language ) ? $language : null; |
| 380 |
} |
| 381 |
|
| 382 |
if ( 'term' === $type || pll_is_translated_taxonomy( $type ) ) { |
| 383 |
$term = get_term_by( 'term_taxonomy_id', $id ); |
| 384 |
if ( $term instanceof WP_Term ) { |
| 385 |
$id = $term->term_id; |
| 386 |
} |
| 387 |
$language = pll_get_term_language( $id ); |
| 388 |
return is_string( $language ) ? $language : null; |
| 389 |
} |
| 390 |
|
| 391 |
return null; |
| 392 |
} |
| 393 |
|
| 394 |
/** |
| 395 |
* Translates a string. |
| 396 |
* |
| 397 |
* @since 2.0 |
| 398 |
* |
| 399 |
* @param string $string The string's original value. |
| 400 |
* @param string $context The string's registered context. |
| 401 |
* @param string $name The string's registered name. |
| 402 |
* @param null|string $lang Optional, return the translation in this language, defaults to current language. |
| 403 |
* @return string The translated string. |
| 404 |
*/ |
| 405 |
public function wpml_translate_single_string( $string, $context, $name, $lang = null ) { |
| 406 |
$has_translation = null; // Passed by reference. |
| 407 |
return icl_translate( $context, $name, $string, false, $has_translation, $lang ); |
| 408 |
} |
| 409 |
|
| 410 |
/** |
| 411 |
* Converts a permalink to a language specific permalink. |
| 412 |
* |
| 413 |
* @since 2.2 |
| 414 |
* |
| 415 |
* @param string $url The url to filter. |
| 416 |
* @param null|string $lang Language code, optional, defaults to the current language. |
| 417 |
* @return string |
| 418 |
*/ |
| 419 |
public function wpml_permalink( $url, $lang = '' ) { |
| 420 |
$lang = PLL()->model->get_language( $lang ); |
| 421 |
|
| 422 |
if ( empty( $lang ) && ! empty( PLL()->curlang ) ) { |
| 423 |
$lang = PLL()->curlang; |
| 424 |
} |
| 425 |
|
| 426 |
return empty( $lang ) ? $url : PLL()->links_model->switch_language_in_link( $url, $lang ); |
| 427 |
} |
| 428 |
|
| 429 |
/** |
| 430 |
* Translates a post type slug. |
| 431 |
* |
| 432 |
* @since 2.2 |
| 433 |
* |
| 434 |
* @param string $slug Post type slug. |
| 435 |
* @param string $post_type Post type name. |
| 436 |
* @param string $lang Optional language code (defaults to current language). |
| 437 |
* @return string |
| 438 |
*/ |
| 439 |
public function wpml_get_translated_slug( $slug, $post_type, $lang = null ) { |
| 440 |
if ( isset( PLL()->translate_slugs ) ) { |
| 441 |
if ( empty( $lang ) ) { |
| 442 |
$lang = pll_current_language(); |
| 443 |
} |
| 444 |
|
| 445 |
$slug = PLL()->translate_slugs->slugs_model->get_translated_slug( $post_type, $lang ); |
| 446 |
} |
| 447 |
return $slug; |
| 448 |
} |
| 449 |
|
| 450 |
/** |
| 451 |
* Find out whether a post type or a taxonomy term is translated. |
| 452 |
* |
| 453 |
* @since 2.0 |
| 454 |
* |
| 455 |
* @param mixed $null Not used. |
| 456 |
* @param int $id The post_id or term_id. |
| 457 |
* @param string $type The post type or taxonomy. |
| 458 |
* @return bool |
| 459 |
*/ |
| 460 |
public function wpml_element_has_translations( $null, $id, $type ) { |
| 461 |
if ( 'post' === $type || pll_is_translated_post_type( $type ) ) { |
| 462 |
return count( pll_get_post_translations( $id ) ) > 1; |
| 463 |
} elseif ( 'term' === $type || pll_is_translated_taxonomy( $type ) ) { |
| 464 |
return count( pll_get_term_translations( $id ) ) > 1; |
| 465 |
} |
| 466 |
|
| 467 |
return false; |
| 468 |
} |
| 469 |
|
| 470 |
/** |
| 471 |
* Returns true if languages and translations are managed for this post type. |
| 472 |
* |
| 473 |
* @since 3.4 |
| 474 |
* |
| 475 |
* @param mixed $value Not used. |
| 476 |
* @param string $post_type The post type name. |
| 477 |
* @return bool |
| 478 |
*/ |
| 479 |
public function wpml_is_translated_post_type( $value, $post_type ) { |
| 480 |
return pll_is_translated_post_type( $post_type ); |
| 481 |
} |
| 482 |
|
| 483 |
/** |
| 484 |
* Returns true if languages and translations are managed for this taxonomy. |
| 485 |
* |
| 486 |
* @since 3.4 |
| 487 |
* |
| 488 |
* @param mixed $value Not used. |
| 489 |
* @param string $taxonomy The taxonomy name. |
| 490 |
* @return bool |
| 491 |
*/ |
| 492 |
public function wpml_is_translated_taxonomy( $value, $taxonomy ) { |
| 493 |
return pll_is_translated_taxonomy( $taxonomy ); |
| 494 |
} |
| 495 |
} |
| 496 |
|
