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functions.wp-scripts.php (13421B)


      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  * Initialize $wp_scripts if it has not been set.
     13  *
     14  * @global WP_Scripts $wp_scripts
     15  *
     16  * @since 4.2.0
     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 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, $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,
     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  * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
     81  *
     82  * @since 2.1.0
     83  *
     84  * @param string|bool|array $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>&lt;script&gt;</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  * Register 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  *
    161  * @param string           $handle    Name of the script. Should be unique.
    162  * @param string|bool      $src       Full URL of the script, or path of the script relative to the WordPress root directory.
    163  *                                    If source is set to false, script is an alias of other scripts it depends on.
    164  * @param string[]         $deps      Optional. An array of registered script handles this script depends on. Default empty array.
    165  * @param string|bool|null $ver       Optional. String specifying script version number, if it has one, which is added to the URL
    166  *                                    as a query string for cache busting purposes. If version is set to false, a version
    167  *                                    number is automatically added equal to current installed WordPress version.
    168  *                                    If set to null, no version is added.
    169  * @param bool             $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.
    170  *                                    Default 'false'.
    171  * @return bool Whether the script has been registered. True on success, false on failure.
    172  */
    173 function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) {
    174 	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    175 
    176 	$wp_scripts = wp_scripts();
    177 
    178 	$registered = $wp_scripts->add( $handle, $src, $deps, $ver );
    179 	if ( $in_footer ) {
    180 		$wp_scripts->add_data( $handle, 'group', 1 );
    181 	}
    182 
    183 	return $registered;
    184 }
    185 
    186 /**
    187  * Localize a script.
    188  *
    189  * Works only if the script has already been added.
    190  *
    191  * Accepts an associative array $l10n and creates a JavaScript object:
    192  *
    193  *     "$object_name" = {
    194  *         key: value,
    195  *         key: value,
    196  *         ...
    197  *     }
    198  *
    199  * @see WP_Scripts::localize()
    200  * @link https://core.trac.wordpress.org/ticket/11520
    201  * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
    202  *
    203  * @since 2.2.0
    204  *
    205  * @todo Documentation cleanup
    206  *
    207  * @param string $handle      Script handle the data will be attached to.
    208  * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.
    209  *                            Example: '/[a-zA-Z0-9_]+/'.
    210  * @param array  $l10n        The data itself. The data can be either a single or multi-dimensional array.
    211  * @return bool True if the script was successfully localized, false otherwise.
    212  */
    213 function wp_localize_script( $handle, $object_name, $l10n ) {
    214 	global $wp_scripts;
    215 
    216 	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
    217 		_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    218 		return false;
    219 	}
    220 
    221 	return $wp_scripts->localize( $handle, $object_name, $l10n );
    222 }
    223 
    224 /**
    225  * Sets translated strings for a script.
    226  *
    227  * Works only if the script has already been added.
    228  *
    229  * @see WP_Scripts::set_translations()
    230  * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
    231  *
    232  * @since 5.0.0
    233  * @since 5.1.0 The `$domain` parameter was made optional.
    234  *
    235  * @param string $handle Script handle the textdomain will be attached to.
    236  * @param string $domain Optional. Text domain. Default 'default'.
    237  * @param string $path   Optional. The full file path to the directory containing translation files.
    238  * @return bool True if the text domain was successfully localized, false otherwise.
    239  */
    240 function wp_set_script_translations( $handle, $domain = 'default', $path = null ) {
    241 	global $wp_scripts;
    242 
    243 	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
    244 		_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    245 		return false;
    246 	}
    247 
    248 	return $wp_scripts->set_translations( $handle, $domain, $path );
    249 }
    250 
    251 /**
    252  * Remove a registered script.
    253  *
    254  * Note: there are intentional safeguards in place to prevent critical admin scripts,
    255  * such as jQuery core, from being unregistered.
    256  *
    257  * @see WP_Dependencies::remove()
    258  *
    259  * @since 2.1.0
    260  *
    261  * @global string $pagenow
    262  *
    263  * @param string $handle Name of the script to be removed.
    264  */
    265 function wp_deregister_script( $handle ) {
    266 	global $pagenow;
    267 
    268 	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    269 
    270 	/**
    271 	 * Do not allow accidental or negligent de-registering of critical scripts in the admin.
    272 	 * Show minimal remorse if the correct hook is used.
    273 	 */
    274 	$current_filter = current_filter();
    275 	if ( ( is_admin() && 'admin_enqueue_scripts' !== $current_filter ) ||
    276 		( 'wp-login.php' === $pagenow && 'login_enqueue_scripts' !== $current_filter )
    277 	) {
    278 		$not_allowed = array(
    279 			'jquery',
    280 			'jquery-core',
    281 			'jquery-migrate',
    282 			'jquery-ui-core',
    283 			'jquery-ui-accordion',
    284 			'jquery-ui-autocomplete',
    285 			'jquery-ui-button',
    286 			'jquery-ui-datepicker',
    287 			'jquery-ui-dialog',
    288 			'jquery-ui-draggable',
    289 			'jquery-ui-droppable',
    290 			'jquery-ui-menu',
    291 			'jquery-ui-mouse',
    292 			'jquery-ui-position',
    293 			'jquery-ui-progressbar',
    294 			'jquery-ui-resizable',
    295 			'jquery-ui-selectable',
    296 			'jquery-ui-slider',
    297 			'jquery-ui-sortable',
    298 			'jquery-ui-spinner',
    299 			'jquery-ui-tabs',
    300 			'jquery-ui-tooltip',
    301 			'jquery-ui-widget',
    302 			'underscore',
    303 			'backbone',
    304 		);
    305 
    306 		if ( in_array( $handle, $not_allowed, true ) ) {
    307 			_doing_it_wrong(
    308 				__FUNCTION__,
    309 				sprintf(
    310 					/* translators: 1: Script name, 2: wp_enqueue_scripts */
    311 					__( 'Do not deregister the %1$s script in the administration area. To target the front-end theme, use the %2$s hook.' ),
    312 					"<code>$handle</code>",
    313 					'<code>wp_enqueue_scripts</code>'
    314 				),
    315 				'3.6.0'
    316 			);
    317 			return;
    318 		}
    319 	}
    320 
    321 	wp_scripts()->remove( $handle );
    322 }
    323 
    324 /**
    325  * Enqueue a script.
    326  *
    327  * Registers the script if $src provided (does NOT overwrite), and enqueues it.
    328  *
    329  * @see WP_Dependencies::add()
    330  * @see WP_Dependencies::add_data()
    331  * @see WP_Dependencies::enqueue()
    332  *
    333  * @since 2.1.0
    334  *
    335  * @param string           $handle    Name of the script. Should be unique.
    336  * @param string           $src       Full URL of the script, or path of the script relative to the WordPress root directory.
    337  *                                    Default empty.
    338  * @param string[]         $deps      Optional. An array of registered script handles this script depends on. Default empty array.
    339  * @param string|bool|null $ver       Optional. String specifying script version number, if it has one, which is added to the URL
    340  *                                    as a query string for cache busting purposes. If version is set to false, a version
    341  *                                    number is automatically added equal to current installed WordPress version.
    342  *                                    If set to null, no version is added.
    343  * @param bool             $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.
    344  *                                    Default 'false'.
    345  */
    346 function wp_enqueue_script( $handle, $src = '', $deps = array(), $ver = false, $in_footer = false ) {
    347 	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    348 
    349 	$wp_scripts = wp_scripts();
    350 
    351 	if ( $src || $in_footer ) {
    352 		$_handle = explode( '?', $handle );
    353 
    354 		if ( $src ) {
    355 			$wp_scripts->add( $_handle[0], $src, $deps, $ver );
    356 		}
    357 
    358 		if ( $in_footer ) {
    359 			$wp_scripts->add_data( $_handle[0], 'group', 1 );
    360 		}
    361 	}
    362 
    363 	$wp_scripts->enqueue( $handle );
    364 }
    365 
    366 /**
    367  * Remove a previously enqueued script.
    368  *
    369  * @see WP_Dependencies::dequeue()
    370  *
    371  * @since 3.1.0
    372  *
    373  * @param string $handle Name of the script to be removed.
    374  */
    375 function wp_dequeue_script( $handle ) {
    376 	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    377 
    378 	wp_scripts()->dequeue( $handle );
    379 }
    380 
    381 /**
    382  * Determines whether a script has been added to the queue.
    383  *
    384  * For more information on this and similar theme functions, check out
    385  * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
    386  * Conditional Tags} article in the Theme Developer Handbook.
    387  *
    388  * @since 2.8.0
    389  * @since 3.5.0 'enqueued' added as an alias of the 'queue' list.
    390  *
    391  * @param string $handle Name of the script.
    392  * @param string $list   Optional. Status of the script to check. Default 'enqueued'.
    393  *                       Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.
    394  * @return bool Whether the script is queued.
    395  */
    396 function wp_script_is( $handle, $list = 'enqueued' ) {
    397 	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );
    398 
    399 	return (bool) wp_scripts()->query( $handle, $list );
    400 }
    401 
    402 /**
    403  * Add metadata to a script.
    404  *
    405  * Works only if the script has already been added.
    406  *
    407  * Possible values for $key and $value:
    408  * 'conditional' string Comments for IE 6, lte IE 7, etc.
    409  *
    410  * @since 4.2.0
    411  *
    412  * @see WP_Dependencies::add_data()
    413  *
    414  * @param string $handle Name of the script.
    415  * @param string $key    Name of data point for which we're storing a value.
    416  * @param mixed  $value  String containing the data to be added.
    417  * @return bool True on success, false on failure.
    418  */
    419 function wp_script_add_data( $handle, $key, $value ) {
    420 	return wp_scripts()->add_data( $handle, $key, $value );
    421 }