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1 <?php 2 /** 3 * Dependencies API: Scripts functions 4 * 5 * @since 2.6.0 6 * 7 * @package WordPress 8 * @subpackage Dependencies 9 */ 10 11 /** 12 * Initializes $wp_scripts if it has not been set. 13 * 14 * @since 4.2.0 15 * 16 * @global WP_Scripts $wp_scripts 17 * 18 * @return WP_Scripts WP_Scripts instance. 19 */ 20 function wp_scripts() { 21 global $wp_scripts; 22 23 if ( ! ( $wp_scripts instanceof WP_Scripts ) ) { 24 $wp_scripts = new WP_Scripts(); 25 } 26 27 return $wp_scripts; 28 } 29 30 /** 31 * Helper function to output a _doing_it_wrong message when applicable. 32 * 33 * @ignore 34 * @since 4.2.0 35 * @since 5.5.0 Added the `$handle` parameter. 36 * 37 * @param string $function_name Function name. 38 * @param string $handle Optional. Name of the script or stylesheet that was 39 * registered or enqueued too early. Default empty. 40 */ 41 function _wp_scripts_maybe_doing_it_wrong( $function_name, $handle = '' ) { 42 if ( did_action( 'init' ) || did_action( 'wp_enqueue_scripts' ) 43 || did_action( 'admin_enqueue_scripts' ) || did_action( 'login_enqueue_scripts' ) 44 ) { 45 return; 46 } 47 48 $message = sprintf( 49 /* translators: 1: wp_enqueue_scripts, 2: admin_enqueue_scripts, 3: login_enqueue_scripts */ 50 __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ), 51 '<code>wp_enqueue_scripts</code>', 52 '<code>admin_enqueue_scripts</code>', 53 '<code>login_enqueue_scripts</code>' 54 ); 55 56 if ( $handle ) { 57 $message .= ' ' . sprintf( 58 /* translators: %s: Name of the script or stylesheet. */ 59 __( 'This notice was triggered by the %s handle.' ), 60 '<code>' . $handle . '</code>' 61 ); 62 } 63 64 _doing_it_wrong( 65 $function_name, 66 $message, 67 '3.3.0' 68 ); 69 } 70 71 /** 72 * Prints scripts in document head that are in the $handles queue. 73 * 74 * Called by admin-header.php and {@see 'wp_head'} hook. Since it is called by wp_head on every page load, 75 * the function does not instantiate the WP_Scripts object unless script names are explicitly passed. 76 * Makes use of already-instantiated `$wp_scripts` global if present. Use provided {@see 'wp_print_scripts'} 77 * hook to register/enqueue new scripts. 78 * 79 * @see WP_Scripts::do_item() 80 * @since 2.1.0 81 * 82 * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts. 83 * 84 * @param string|string[]|false $handles Optional. Scripts to be printed. Default 'false'. 85 * @return string[] On success, an array of handles of processed WP_Dependencies items; otherwise, an empty array. 86 */ 87 function wp_print_scripts( $handles = false ) { 88 global $wp_scripts; 89 90 /** 91 * Fires before scripts in the $handles queue are printed. 92 * 93 * @since 2.1.0 94 */ 95 do_action( 'wp_print_scripts' ); 96 97 if ( '' === $handles ) { // For 'wp_head'. 98 $handles = false; 99 } 100 101 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__ ); 102 103 if ( ! ( $wp_scripts instanceof WP_Scripts ) ) { 104 if ( ! $handles ) { 105 return array(); // No need to instantiate if nothing is there. 106 } 107 } 108 109 return wp_scripts()->do_items( $handles ); 110 } 111 112 /** 113 * Adds extra code to a registered script. 114 * 115 * Code will only be added if the script is already in the queue. 116 * Accepts a string `$data` containing the code. If two or more code blocks 117 * are added to the same script `$handle`, they will be printed in the order 118 * they were added, i.e. the latter added code can redeclare the previous. 119 * 120 * @since 4.5.0 121 * 122 * @see WP_Scripts::add_inline_script() 123 * 124 * @param string $handle Name of the script to add the inline script to. 125 * @param string $data String containing the JavaScript to be added. 126 * @param string $position Optional. Whether to add the inline script before the handle 127 * or after. Default 'after'. 128 * @return bool True on success, false on failure. 129 */ 130 function wp_add_inline_script( $handle, $data, $position = 'after' ) { 131 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 132 133 if ( false !== stripos( $data, '</script>' ) ) { 134 _doing_it_wrong( 135 __FUNCTION__, 136 sprintf( 137 /* translators: 1: <script>, 2: wp_add_inline_script() */ 138 __( 'Do not pass %1$s tags to %2$s.' ), 139 '<code><script></code>', 140 '<code>wp_add_inline_script()</code>' 141 ), 142 '4.5.0' 143 ); 144 $data = trim( preg_replace( '#<script[^>]*>(.*)</script>#is', '$1', $data ) ); 145 } 146 147 return wp_scripts()->add_inline_script( $handle, $data, $position ); 148 } 149 150 /** 151 * Registers a new script. 152 * 153 * Registers a script to be enqueued later using the wp_enqueue_script() function. 154 * 155 * @see WP_Dependencies::add() 156 * @see WP_Dependencies::add_data() 157 * 158 * @since 2.1.0 159 * @since 4.3.0 A return value was added. 160 * @since 6.3.0 The $in_footer parameter of type boolean was overloaded to be an $args parameter of type array. 161 * 162 * @param string $handle Name of the script. Should be unique. 163 * @param string|false $src Full URL of the script, or path of the script relative to the WordPress root directory. 164 * If source is set to false, script is an alias of other scripts it depends on. 165 * @param string[] $deps Optional. An array of registered script handles this script depends on. Default empty array. 166 * @param string|bool|null $ver Optional. String specifying script version number, if it has one, which is added to the URL 167 * as a query string for cache busting purposes. If version is set to false, a version 168 * number is automatically added equal to current installed WordPress version. 169 * If set to null, no version is added. 170 * @param array|bool $args { 171 * Optional. An array of additional script loading strategies. Default empty array. 172 * Otherwise, it may be a boolean in which case it determines whether the script is printed in the footer. Default false. 173 * 174 * @type string $strategy Optional. If provided, may be either 'defer' or 'async'. 175 * @type bool $in_footer Optional. Whether to print the script in the footer. Default 'false'. 176 * } 177 * @return bool Whether the script has been registered. True on success, false on failure. 178 */ 179 function wp_register_script( $handle, $src, $deps = array(), $ver = false, $args = array() ) { 180 if ( ! is_array( $args ) ) { 181 $args = array( 182 'in_footer' => (bool) $args, 183 ); 184 } 185 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 186 187 $wp_scripts = wp_scripts(); 188 189 $registered = $wp_scripts->add( $handle, $src, $deps, $ver ); 190 if ( ! empty( $args['in_footer'] ) ) { 191 $wp_scripts->add_data( $handle, 'group', 1 ); 192 } 193 if ( ! empty( $args['strategy'] ) ) { 194 $wp_scripts->add_data( $handle, 'strategy', $args['strategy'] ); 195 } 196 return $registered; 197 } 198 199 /** 200 * Localizes a script. 201 * 202 * Works only if the script has already been registered. 203 * 204 * Accepts an associative array `$l10n` and creates a JavaScript object: 205 * 206 * "$object_name": { 207 * key: value, 208 * key: value, 209 * ... 210 * } 211 * 212 * @see WP_Scripts::localize() 213 * @link https://core.trac.wordpress.org/ticket/11520 214 * 215 * @since 2.2.0 216 * 217 * @todo Documentation cleanup 218 * 219 * @param string $handle Script handle the data will be attached to. 220 * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable. 221 * Example: '/[a-zA-Z0-9_]+/'. 222 * @param array $l10n The data itself. The data can be either a single or multi-dimensional array. 223 * @return bool True if the script was successfully localized, false otherwise. 224 */ 225 function wp_localize_script( $handle, $object_name, $l10n ) { 226 $wp_scripts = wp_scripts(); 227 228 return $wp_scripts->localize( $handle, $object_name, $l10n ); 229 } 230 231 /** 232 * Sets translated strings for a script. 233 * 234 * Works only if the script has already been registered. 235 * 236 * @see WP_Scripts::set_translations() 237 * @since 5.0.0 238 * @since 5.1.0 The `$domain` parameter was made optional. 239 * 240 * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts. 241 * 242 * @param string $handle Script handle the textdomain will be attached to. 243 * @param string $domain Optional. Text domain. Default 'default'. 244 * @param string $path Optional. The full file path to the directory containing translation files. 245 * @return bool True if the text domain was successfully localized, false otherwise. 246 */ 247 function wp_set_script_translations( $handle, $domain = 'default', $path = '' ) { 248 global $wp_scripts; 249 250 if ( ! ( $wp_scripts instanceof WP_Scripts ) ) { 251 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 252 return false; 253 } 254 255 return $wp_scripts->set_translations( $handle, $domain, $path ); 256 } 257 258 /** 259 * Removes a registered script. 260 * 261 * Note: there are intentional safeguards in place to prevent critical admin scripts, 262 * such as jQuery core, from being unregistered. 263 * 264 * @see WP_Dependencies::remove() 265 * 266 * @since 2.1.0 267 * 268 * @global string $pagenow The filename of the current screen. 269 * 270 * @param string $handle Name of the script to be removed. 271 */ 272 function wp_deregister_script( $handle ) { 273 global $pagenow; 274 275 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 276 277 /** 278 * Do not allow accidental or negligent de-registering of critical scripts in the admin. 279 * Show minimal remorse if the correct hook is used. 280 */ 281 $current_filter = current_filter(); 282 if ( ( is_admin() && 'admin_enqueue_scripts' !== $current_filter ) || 283 ( 'wp-login.php' === $pagenow && 'login_enqueue_scripts' !== $current_filter ) 284 ) { 285 $not_allowed = array( 286 'jquery', 287 'jquery-core', 288 'jquery-migrate', 289 'jquery-ui-core', 290 'jquery-ui-accordion', 291 'jquery-ui-autocomplete', 292 'jquery-ui-button', 293 'jquery-ui-datepicker', 294 'jquery-ui-dialog', 295 'jquery-ui-draggable', 296 'jquery-ui-droppable', 297 'jquery-ui-menu', 298 'jquery-ui-mouse', 299 'jquery-ui-position', 300 'jquery-ui-progressbar', 301 'jquery-ui-resizable', 302 'jquery-ui-selectable', 303 'jquery-ui-slider', 304 'jquery-ui-sortable', 305 'jquery-ui-spinner', 306 'jquery-ui-tabs', 307 'jquery-ui-tooltip', 308 'jquery-ui-widget', 309 'underscore', 310 'backbone', 311 ); 312 313 if ( in_array( $handle, $not_allowed, true ) ) { 314 _doing_it_wrong( 315 __FUNCTION__, 316 sprintf( 317 /* translators: 1: Script name, 2: wp_enqueue_scripts */ 318 __( 'Do not deregister the %1$s script in the administration area. To target the front-end theme, use the %2$s hook.' ), 319 "<code>$handle</code>", 320 '<code>wp_enqueue_scripts</code>' 321 ), 322 '3.6.0' 323 ); 324 return; 325 } 326 } 327 328 wp_scripts()->remove( $handle ); 329 } 330 331 /** 332 * Enqueues a script. 333 * 334 * Registers the script if `$src` provided (does NOT overwrite), and enqueues it. 335 * 336 * @see WP_Dependencies::add() 337 * @see WP_Dependencies::add_data() 338 * @see WP_Dependencies::enqueue() 339 * 340 * @since 2.1.0 341 * @since 6.3.0 The $in_footer parameter of type boolean was overloaded to be an $args parameter of type array. 342 * 343 * @param string $handle Name of the script. Should be unique. 344 * @param string $src Full URL of the script, or path of the script relative to the WordPress root directory. 345 * Default empty. 346 * @param string[] $deps Optional. An array of registered script handles this script depends on. Default empty array. 347 * @param string|bool|null $ver Optional. String specifying script version number, if it has one, which is added to the URL 348 * as a query string for cache busting purposes. If version is set to false, a version 349 * number is automatically added equal to current installed WordPress version. 350 * If set to null, no version is added. 351 * @param array|bool $args { 352 * Optional. An array of additional script loading strategies. Default empty array. 353 * Otherwise, it may be a boolean in which case it determines whether the script is printed in the footer. Default false. 354 * 355 * @type string $strategy Optional. If provided, may be either 'defer' or 'async'. 356 * @type bool $in_footer Optional. Whether to print the script in the footer. Default 'false'. 357 * } 358 */ 359 function wp_enqueue_script( $handle, $src = '', $deps = array(), $ver = false, $args = array() ) { 360 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 361 362 $wp_scripts = wp_scripts(); 363 364 if ( $src || ! empty( $args ) ) { 365 $_handle = explode( '?', $handle ); 366 if ( ! is_array( $args ) ) { 367 $args = array( 368 'in_footer' => (bool) $args, 369 ); 370 } 371 372 if ( $src ) { 373 $wp_scripts->add( $_handle[0], $src, $deps, $ver ); 374 } 375 if ( ! empty( $args['in_footer'] ) ) { 376 $wp_scripts->add_data( $_handle[0], 'group', 1 ); 377 } 378 if ( ! empty( $args['strategy'] ) ) { 379 $wp_scripts->add_data( $_handle[0], 'strategy', $args['strategy'] ); 380 } 381 } 382 383 $wp_scripts->enqueue( $handle ); 384 } 385 386 /** 387 * Removes a previously enqueued script. 388 * 389 * @see WP_Dependencies::dequeue() 390 * 391 * @since 3.1.0 392 * 393 * @param string $handle Name of the script to be removed. 394 */ 395 function wp_dequeue_script( $handle ) { 396 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 397 398 wp_scripts()->dequeue( $handle ); 399 } 400 401 /** 402 * Determines whether a script has been added to the queue. 403 * 404 * For more information on this and similar theme functions, check out 405 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 406 * Conditional Tags} article in the Theme Developer Handbook. 407 * 408 * @since 2.8.0 409 * @since 3.5.0 'enqueued' added as an alias of the 'queue' list. 410 * 411 * @param string $handle Name of the script. 412 * @param string $status Optional. Status of the script to check. Default 'enqueued'. 413 * Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'. 414 * @return bool Whether the script is queued. 415 */ 416 function wp_script_is( $handle, $status = 'enqueued' ) { 417 _wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle ); 418 419 return (bool) wp_scripts()->query( $handle, $status ); 420 } 421 422 /** 423 * Adds metadata to a script. 424 * 425 * Works only if the script has already been registered. 426 * 427 * Possible values for $key and $value: 428 * 'conditional' string Comments for IE 6, lte IE 7, etc. 429 * 430 * @since 4.2.0 431 * 432 * @see WP_Dependencies::add_data() 433 * 434 * @param string $handle Name of the script. 435 * @param string $key Name of data point for which we're storing a value. 436 * @param mixed $value String containing the data to be added. 437 * @return bool True on success, false on failure. 438 */ 439 function wp_script_add_data( $handle, $key, $value ) { 440 return wp_scripts()->add_data( $handle, $key, $value ); 441 }
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