wp/wp-includes/class.wp-scripts.php
changeset 21 48c4eec2b7e6
parent 19 3d72ae0968f4
equal deleted inserted replaced
20:7b1b88e27a20 21:48c4eec2b7e6
     1 <?php
     1 <?php
     2 /**
     2 /**
     3  * Dependencies API: WP_Scripts class
     3  * Dependencies API: WP_Scripts class
     4  *
     4  *
     5  * @since 2.6.0
     5  * This file is deprecated, use 'wp-includes/class-wp-scripts.php' instead.
     6  *
     6  *
       
     7  * @deprecated 6.1.0
     7  * @package WordPress
     8  * @package WordPress
     8  * @subpackage Dependencies
       
     9  */
     9  */
    10 
    10 
    11 /**
    11 _deprecated_file( basename( __FILE__ ), '6.1.0', WPINC . '/class-wp-scripts.php' );
    12  * Core class used to register scripts.
       
    13  *
       
    14  * @since 2.1.0
       
    15  *
       
    16  * @see WP_Dependencies
       
    17  */
       
    18 class WP_Scripts extends WP_Dependencies {
       
    19 	/**
       
    20 	 * Base URL for scripts.
       
    21 	 *
       
    22 	 * Full URL with trailing slash.
       
    23 	 *
       
    24 	 * @since 2.6.0
       
    25 	 * @var string
       
    26 	 */
       
    27 	public $base_url;
       
    28 
    12 
    29 	/**
    13 /** WP_Scripts class */
    30 	 * URL of the content directory.
    14 require_once ABSPATH . WPINC . '/class-wp-scripts.php';
    31 	 *
       
    32 	 * @since 2.8.0
       
    33 	 * @var string
       
    34 	 */
       
    35 	public $content_url;
       
    36 
       
    37 	/**
       
    38 	 * Default version string for scripts.
       
    39 	 *
       
    40 	 * @since 2.6.0
       
    41 	 * @var string
       
    42 	 */
       
    43 	public $default_version;
       
    44 
       
    45 	/**
       
    46 	 * Holds handles of scripts which are enqueued in footer.
       
    47 	 *
       
    48 	 * @since 2.8.0
       
    49 	 * @var array
       
    50 	 */
       
    51 	public $in_footer = array();
       
    52 
       
    53 	/**
       
    54 	 * Holds a list of script handles which will be concatenated.
       
    55 	 *
       
    56 	 * @since 2.8.0
       
    57 	 * @var string
       
    58 	 */
       
    59 	public $concat = '';
       
    60 
       
    61 	/**
       
    62 	 * Holds a string which contains script handles and their version.
       
    63 	 *
       
    64 	 * @since 2.8.0
       
    65 	 * @deprecated 3.4.0
       
    66 	 * @var string
       
    67 	 */
       
    68 	public $concat_version = '';
       
    69 
       
    70 	/**
       
    71 	 * Whether to perform concatenation.
       
    72 	 *
       
    73 	 * @since 2.8.0
       
    74 	 * @var bool
       
    75 	 */
       
    76 	public $do_concat = false;
       
    77 
       
    78 	/**
       
    79 	 * Holds HTML markup of scripts and additional data if concatenation
       
    80 	 * is enabled.
       
    81 	 *
       
    82 	 * @since 2.8.0
       
    83 	 * @var string
       
    84 	 */
       
    85 	public $print_html = '';
       
    86 
       
    87 	/**
       
    88 	 * Holds inline code if concatenation is enabled.
       
    89 	 *
       
    90 	 * @since 2.8.0
       
    91 	 * @var string
       
    92 	 */
       
    93 	public $print_code = '';
       
    94 
       
    95 	/**
       
    96 	 * Holds a list of script handles which are not in the default directory
       
    97 	 * if concatenation is enabled.
       
    98 	 *
       
    99 	 * Unused in core.
       
   100 	 *
       
   101 	 * @since 2.8.0
       
   102 	 * @var string
       
   103 	 */
       
   104 	public $ext_handles = '';
       
   105 
       
   106 	/**
       
   107 	 * Holds a string which contains handles and versions of scripts which
       
   108 	 * are not in the default directory if concatenation is enabled.
       
   109 	 *
       
   110 	 * Unused in core.
       
   111 	 *
       
   112 	 * @since 2.8.0
       
   113 	 * @var string
       
   114 	 */
       
   115 	public $ext_version = '';
       
   116 
       
   117 	/**
       
   118 	 * List of default directories.
       
   119 	 *
       
   120 	 * @since 2.8.0
       
   121 	 * @var array
       
   122 	 */
       
   123 	public $default_dirs;
       
   124 
       
   125 	/**
       
   126 	 * Holds a string which contains the type attribute for script tag.
       
   127 	 *
       
   128 	 * If the active theme does not declare HTML5 support for 'script',
       
   129 	 * then it initializes as `type='text/javascript'`.
       
   130 	 *
       
   131 	 * @since 5.3.0
       
   132 	 * @var string
       
   133 	 */
       
   134 	private $type_attr = '';
       
   135 
       
   136 	/**
       
   137 	 * Constructor.
       
   138 	 *
       
   139 	 * @since 2.6.0
       
   140 	 */
       
   141 	public function __construct() {
       
   142 		$this->init();
       
   143 		add_action( 'init', array( $this, 'init' ), 0 );
       
   144 	}
       
   145 
       
   146 	/**
       
   147 	 * Initialize the class.
       
   148 	 *
       
   149 	 * @since 3.4.0
       
   150 	 */
       
   151 	public function init() {
       
   152 		if (
       
   153 			function_exists( 'is_admin' ) && ! is_admin()
       
   154 		&&
       
   155 			function_exists( 'current_theme_supports' ) && ! current_theme_supports( 'html5', 'script' )
       
   156 		) {
       
   157 			$this->type_attr = " type='text/javascript'";
       
   158 		}
       
   159 
       
   160 		/**
       
   161 		 * Fires when the WP_Scripts instance is initialized.
       
   162 		 *
       
   163 		 * @since 2.6.0
       
   164 		 *
       
   165 		 * @param WP_Scripts $wp_scripts WP_Scripts instance (passed by reference).
       
   166 		 */
       
   167 		do_action_ref_array( 'wp_default_scripts', array( &$this ) );
       
   168 	}
       
   169 
       
   170 	/**
       
   171 	 * Prints scripts.
       
   172 	 *
       
   173 	 * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
       
   174 	 *
       
   175 	 * @since 2.1.0
       
   176 	 * @since 2.8.0 Added the `$group` parameter.
       
   177 	 *
       
   178 	 * @param string|string[]|false $handles Optional. Scripts to be printed: queue (false),
       
   179 	 *                                       single script (string), or multiple scripts (array of strings).
       
   180 	 *                                       Default false.
       
   181 	 * @param int|false             $group   Optional. Group level: level (int), no groups (false).
       
   182 	 *                                       Default false.
       
   183 	 * @return string[] Handles of scripts that have been printed.
       
   184 	 */
       
   185 	public function print_scripts( $handles = false, $group = false ) {
       
   186 		return $this->do_items( $handles, $group );
       
   187 	}
       
   188 
       
   189 	/**
       
   190 	 * Prints extra scripts of a registered script.
       
   191 	 *
       
   192 	 * @since 2.1.0
       
   193 	 * @since 2.8.0 Added the `$display` parameter.
       
   194 	 * @deprecated 3.3.0
       
   195 	 *
       
   196 	 * @see print_extra_script()
       
   197 	 *
       
   198 	 * @param string $handle  The script's registered handle.
       
   199 	 * @param bool   $display Optional. Whether to print the extra script
       
   200 	 *                        instead of just returning it. Default true.
       
   201 	 * @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
       
   202 	 *                          true otherwise.
       
   203 	 */
       
   204 	public function print_scripts_l10n( $handle, $display = true ) {
       
   205 		_deprecated_function( __FUNCTION__, '3.3.0', 'WP_Scripts::print_extra_script()' );
       
   206 		return $this->print_extra_script( $handle, $display );
       
   207 	}
       
   208 
       
   209 	/**
       
   210 	 * Prints extra scripts of a registered script.
       
   211 	 *
       
   212 	 * @since 3.3.0
       
   213 	 *
       
   214 	 * @param string $handle  The script's registered handle.
       
   215 	 * @param bool   $display Optional. Whether to print the extra script
       
   216 	 *                        instead of just returning it. Default true.
       
   217 	 * @return bool|string|void Void if no data exists, extra scripts if `$display` is true,
       
   218 	 *                          true otherwise.
       
   219 	 */
       
   220 	public function print_extra_script( $handle, $display = true ) {
       
   221 		$output = $this->get_data( $handle, 'data' );
       
   222 		if ( ! $output ) {
       
   223 			return;
       
   224 		}
       
   225 
       
   226 		if ( ! $display ) {
       
   227 			return $output;
       
   228 		}
       
   229 
       
   230 		printf( "<script%s id='%s-js-extra'>\n", $this->type_attr, esc_attr( $handle ) );
       
   231 
       
   232 		// CDATA is not needed for HTML 5.
       
   233 		if ( $this->type_attr ) {
       
   234 			echo "/* <![CDATA[ */\n";
       
   235 		}
       
   236 
       
   237 		echo "$output\n";
       
   238 
       
   239 		if ( $this->type_attr ) {
       
   240 			echo "/* ]]> */\n";
       
   241 		}
       
   242 
       
   243 		echo "</script>\n";
       
   244 
       
   245 		return true;
       
   246 	}
       
   247 
       
   248 	/**
       
   249 	 * Processes a script dependency.
       
   250 	 *
       
   251 	 * @since 2.6.0
       
   252 	 * @since 2.8.0 Added the `$group` parameter.
       
   253 	 *
       
   254 	 * @see WP_Dependencies::do_item()
       
   255 	 *
       
   256 	 * @param string    $handle The script's registered handle.
       
   257 	 * @param int|false $group  Optional. Group level: level (int), no groups (false).
       
   258 	 *                          Default false.
       
   259 	 * @return bool True on success, false on failure.
       
   260 	 */
       
   261 	public function do_item( $handle, $group = false ) {
       
   262 		if ( ! parent::do_item( $handle ) ) {
       
   263 			return false;
       
   264 		}
       
   265 
       
   266 		if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
       
   267 			$this->in_footer[] = $handle;
       
   268 			return false;
       
   269 		}
       
   270 
       
   271 		if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
       
   272 			$this->in_footer = array_diff( $this->in_footer, (array) $handle );
       
   273 		}
       
   274 
       
   275 		$obj = $this->registered[ $handle ];
       
   276 
       
   277 		if ( null === $obj->ver ) {
       
   278 			$ver = '';
       
   279 		} else {
       
   280 			$ver = $obj->ver ? $obj->ver : $this->default_version;
       
   281 		}
       
   282 
       
   283 		if ( isset( $this->args[ $handle ] ) ) {
       
   284 			$ver = $ver ? $ver . '&amp;' . $this->args[ $handle ] : $this->args[ $handle ];
       
   285 		}
       
   286 
       
   287 		$src         = $obj->src;
       
   288 		$cond_before = '';
       
   289 		$cond_after  = '';
       
   290 		$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
       
   291 
       
   292 		if ( $conditional ) {
       
   293 			$cond_before = "<!--[if {$conditional}]>\n";
       
   294 			$cond_after  = "<![endif]-->\n";
       
   295 		}
       
   296 
       
   297 		$before_handle = $this->print_inline_script( $handle, 'before', false );
       
   298 		$after_handle  = $this->print_inline_script( $handle, 'after', false );
       
   299 
       
   300 		if ( $before_handle ) {
       
   301 			$before_handle = sprintf( "<script%s id='%s-js-before'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $before_handle );
       
   302 		}
       
   303 
       
   304 		if ( $after_handle ) {
       
   305 			$after_handle = sprintf( "<script%s id='%s-js-after'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $after_handle );
       
   306 		}
       
   307 
       
   308 		if ( $before_handle || $after_handle ) {
       
   309 			$inline_script_tag = $cond_before . $before_handle . $after_handle . $cond_after;
       
   310 		} else {
       
   311 			$inline_script_tag = '';
       
   312 		}
       
   313 
       
   314 		/*
       
   315 		 * Prevent concatenation of scripts if the text domain is defined
       
   316 		 * to ensure the dependency order is respected.
       
   317 		 */
       
   318 		$translations_stop_concat = ! empty( $obj->textdomain );
       
   319 
       
   320 		$translations = $this->print_translations( $handle, false );
       
   321 		if ( $translations ) {
       
   322 			$translations = sprintf( "<script%s id='%s-js-translations'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $translations );
       
   323 		}
       
   324 
       
   325 		if ( $this->do_concat ) {
       
   326 			/**
       
   327 			 * Filters the script loader source.
       
   328 			 *
       
   329 			 * @since 2.2.0
       
   330 			 *
       
   331 			 * @param string $src    Script loader source path.
       
   332 			 * @param string $handle Script handle.
       
   333 			 */
       
   334 			$srce = apply_filters( 'script_loader_src', $src, $handle );
       
   335 
       
   336 			if ( $this->in_default_dir( $srce ) && ( $before_handle || $after_handle || $translations_stop_concat ) ) {
       
   337 				$this->do_concat = false;
       
   338 
       
   339 				// Have to print the so-far concatenated scripts right away to maintain the right order.
       
   340 				_print_scripts();
       
   341 				$this->reset();
       
   342 			} elseif ( $this->in_default_dir( $srce ) && ! $conditional ) {
       
   343 				$this->print_code     .= $this->print_extra_script( $handle, false );
       
   344 				$this->concat         .= "$handle,";
       
   345 				$this->concat_version .= "$handle$ver";
       
   346 				return true;
       
   347 			} else {
       
   348 				$this->ext_handles .= "$handle,";
       
   349 				$this->ext_version .= "$handle$ver";
       
   350 			}
       
   351 		}
       
   352 
       
   353 		$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
       
   354 
       
   355 		if ( $has_conditional_data ) {
       
   356 			echo $cond_before;
       
   357 		}
       
   358 
       
   359 		$this->print_extra_script( $handle );
       
   360 
       
   361 		if ( $has_conditional_data ) {
       
   362 			echo $cond_after;
       
   363 		}
       
   364 
       
   365 		// A single item may alias a set of items, by having dependencies, but no source.
       
   366 		if ( ! $src ) {
       
   367 			if ( $inline_script_tag ) {
       
   368 				if ( $this->do_concat ) {
       
   369 					$this->print_html .= $inline_script_tag;
       
   370 				} else {
       
   371 					echo $inline_script_tag;
       
   372 				}
       
   373 			}
       
   374 
       
   375 			return true;
       
   376 		}
       
   377 
       
   378 		if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) {
       
   379 			$src = $this->base_url . $src;
       
   380 		}
       
   381 
       
   382 		if ( ! empty( $ver ) ) {
       
   383 			$src = add_query_arg( 'ver', $ver, $src );
       
   384 		}
       
   385 
       
   386 		/** This filter is documented in wp-includes/class.wp-scripts.php */
       
   387 		$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
       
   388 
       
   389 		if ( ! $src ) {
       
   390 			return true;
       
   391 		}
       
   392 
       
   393 		$tag  = $translations . $cond_before . $before_handle;
       
   394 		$tag .= sprintf( "<script%s src='%s' id='%s-js'></script>\n", $this->type_attr, $src, esc_attr( $handle ) );
       
   395 		$tag .= $after_handle . $cond_after;
       
   396 
       
   397 		/**
       
   398 		 * Filters the HTML script tag of an enqueued script.
       
   399 		 *
       
   400 		 * @since 4.1.0
       
   401 		 *
       
   402 		 * @param string $tag    The `<script>` tag for the enqueued script.
       
   403 		 * @param string $handle The script's registered handle.
       
   404 		 * @param string $src    The script's source URL.
       
   405 		 */
       
   406 		$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
       
   407 
       
   408 		if ( $this->do_concat ) {
       
   409 			$this->print_html .= $tag;
       
   410 		} else {
       
   411 			echo $tag;
       
   412 		}
       
   413 
       
   414 		return true;
       
   415 	}
       
   416 
       
   417 	/**
       
   418 	 * Adds extra code to a registered script.
       
   419 	 *
       
   420 	 * @since 4.5.0
       
   421 	 *
       
   422 	 * @param string $handle   Name of the script to add the inline script to.
       
   423 	 *                         Must be lowercase.
       
   424 	 * @param string $data     String containing the JavaScript to be added.
       
   425 	 * @param string $position Optional. Whether to add the inline script
       
   426 	 *                         before the handle or after. Default 'after'.
       
   427 	 * @return bool True on success, false on failure.
       
   428 	 */
       
   429 	public function add_inline_script( $handle, $data, $position = 'after' ) {
       
   430 		if ( ! $data ) {
       
   431 			return false;
       
   432 		}
       
   433 
       
   434 		if ( 'after' !== $position ) {
       
   435 			$position = 'before';
       
   436 		}
       
   437 
       
   438 		$script   = (array) $this->get_data( $handle, $position );
       
   439 		$script[] = $data;
       
   440 
       
   441 		return $this->add_data( $handle, $position, $script );
       
   442 	}
       
   443 
       
   444 	/**
       
   445 	 * Prints inline scripts registered for a specific handle.
       
   446 	 *
       
   447 	 * @since 4.5.0
       
   448 	 *
       
   449 	 * @param string $handle   Name of the script to add the inline script to.
       
   450 	 *                         Must be lowercase.
       
   451 	 * @param string $position Optional. Whether to add the inline script
       
   452 	 *                         before the handle or after. Default 'after'.
       
   453 	 * @param bool   $display  Optional. Whether to print the script
       
   454 	 *                         instead of just returning it. Default true.
       
   455 	 * @return string|false Script on success, false otherwise.
       
   456 	 */
       
   457 	public function print_inline_script( $handle, $position = 'after', $display = true ) {
       
   458 		$output = $this->get_data( $handle, $position );
       
   459 
       
   460 		if ( empty( $output ) ) {
       
   461 			return false;
       
   462 		}
       
   463 
       
   464 		$output = trim( implode( "\n", $output ), "\n" );
       
   465 
       
   466 		if ( $display ) {
       
   467 			printf( "<script%s id='%s-js-%s'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), esc_attr( $position ), $output );
       
   468 		}
       
   469 
       
   470 		return $output;
       
   471 	}
       
   472 
       
   473 	/**
       
   474 	 * Localizes a script, only if the script has already been added.
       
   475 	 *
       
   476 	 * @since 2.1.0
       
   477 	 *
       
   478 	 * @param string $handle      Name of the script to attach data to.
       
   479 	 * @param string $object_name Name of the variable that will contain the data.
       
   480 	 * @param array  $l10n        Array of data to localize.
       
   481 	 * @return bool True on success, false on failure.
       
   482 	 */
       
   483 	public function localize( $handle, $object_name, $l10n ) {
       
   484 		if ( 'jquery' === $handle ) {
       
   485 			$handle = 'jquery-core';
       
   486 		}
       
   487 
       
   488 		if ( is_array( $l10n ) && isset( $l10n['l10n_print_after'] ) ) { // back compat, preserve the code in 'l10n_print_after' if present.
       
   489 			$after = $l10n['l10n_print_after'];
       
   490 			unset( $l10n['l10n_print_after'] );
       
   491 		}
       
   492 
       
   493 		if ( ! is_array( $l10n ) ) {
       
   494 			_doing_it_wrong(
       
   495 				__METHOD__,
       
   496 				sprintf(
       
   497 					/* translators: 1: $l10n, 2: wp_add_inline_script() */
       
   498 					__( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ),
       
   499 					'<code>$l10n</code>',
       
   500 					'<code>wp_add_inline_script()</code>'
       
   501 				),
       
   502 				'5.7.0'
       
   503 			);
       
   504 		}
       
   505 
       
   506 		if ( is_string( $l10n ) ) {
       
   507 			$l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' );
       
   508 		} else {
       
   509 			foreach ( (array) $l10n as $key => $value ) {
       
   510 				if ( ! is_scalar( $value ) ) {
       
   511 					continue;
       
   512 				}
       
   513 
       
   514 				$l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
       
   515 			}
       
   516 		}
       
   517 
       
   518 		$script = "var $object_name = " . wp_json_encode( $l10n ) . ';';
       
   519 
       
   520 		if ( ! empty( $after ) ) {
       
   521 			$script .= "\n$after;";
       
   522 		}
       
   523 
       
   524 		$data = $this->get_data( $handle, 'data' );
       
   525 
       
   526 		if ( ! empty( $data ) ) {
       
   527 			$script = "$data\n$script";
       
   528 		}
       
   529 
       
   530 		return $this->add_data( $handle, 'data', $script );
       
   531 	}
       
   532 
       
   533 	/**
       
   534 	 * Sets handle group.
       
   535 	 *
       
   536 	 * @since 2.8.0
       
   537 	 *
       
   538 	 * @see WP_Dependencies::set_group()
       
   539 	 *
       
   540 	 * @param string    $handle    Name of the item. Should be unique.
       
   541 	 * @param bool      $recursion Internal flag that calling function was called recursively.
       
   542 	 * @param int|false $group     Optional. Group level: level (int), no groups (false).
       
   543 	 *                             Default false.
       
   544 	 * @return bool Not already in the group or a lower group.
       
   545 	 */
       
   546 	public function set_group( $handle, $recursion, $group = false ) {
       
   547 		if ( isset( $this->registered[ $handle ]->args ) && 1 === $this->registered[ $handle ]->args ) {
       
   548 			$grp = 1;
       
   549 		} else {
       
   550 			$grp = (int) $this->get_data( $handle, 'group' );
       
   551 		}
       
   552 
       
   553 		if ( false !== $group && $grp > $group ) {
       
   554 			$grp = $group;
       
   555 		}
       
   556 
       
   557 		return parent::set_group( $handle, $recursion, $grp );
       
   558 	}
       
   559 
       
   560 	/**
       
   561 	 * Sets a translation textdomain.
       
   562 	 *
       
   563 	 * @since 5.0.0
       
   564 	 * @since 5.1.0 The `$domain` parameter was made optional.
       
   565 	 *
       
   566 	 * @param string $handle Name of the script to register a translation domain to.
       
   567 	 * @param string $domain Optional. Text domain. Default 'default'.
       
   568 	 * @param string $path   Optional. The full file path to the directory containing translation files.
       
   569 	 * @return bool True if the text domain was registered, false if not.
       
   570 	 */
       
   571 	public function set_translations( $handle, $domain = 'default', $path = null ) {
       
   572 		if ( ! isset( $this->registered[ $handle ] ) ) {
       
   573 			return false;
       
   574 		}
       
   575 
       
   576 		/** @var \_WP_Dependency $obj */
       
   577 		$obj = $this->registered[ $handle ];
       
   578 
       
   579 		if ( ! in_array( 'wp-i18n', $obj->deps, true ) ) {
       
   580 			$obj->deps[] = 'wp-i18n';
       
   581 		}
       
   582 
       
   583 		return $obj->set_translations( $domain, $path );
       
   584 	}
       
   585 
       
   586 	/**
       
   587 	 * Prints translations set for a specific handle.
       
   588 	 *
       
   589 	 * @since 5.0.0
       
   590 	 *
       
   591 	 * @param string $handle  Name of the script to add the inline script to.
       
   592 	 *                        Must be lowercase.
       
   593 	 * @param bool   $display Optional. Whether to print the script
       
   594 	 *                        instead of just returning it. Default true.
       
   595 	 * @return string|false Script on success, false otherwise.
       
   596 	 */
       
   597 	public function print_translations( $handle, $display = true ) {
       
   598 		if ( ! isset( $this->registered[ $handle ] ) || empty( $this->registered[ $handle ]->textdomain ) ) {
       
   599 			return false;
       
   600 		}
       
   601 
       
   602 		$domain = $this->registered[ $handle ]->textdomain;
       
   603 		$path   = $this->registered[ $handle ]->translations_path;
       
   604 
       
   605 		$json_translations = load_script_textdomain( $handle, $domain, $path );
       
   606 
       
   607 		if ( ! $json_translations ) {
       
   608 			return false;
       
   609 		}
       
   610 
       
   611 		$output = <<<JS
       
   612 ( function( domain, translations ) {
       
   613 	var localeData = translations.locale_data[ domain ] || translations.locale_data.messages;
       
   614 	localeData[""].domain = domain;
       
   615 	wp.i18n.setLocaleData( localeData, domain );
       
   616 } )( "{$domain}", {$json_translations} );
       
   617 JS;
       
   618 
       
   619 		if ( $display ) {
       
   620 			printf( "<script%s id='%s-js-translations'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $output );
       
   621 		}
       
   622 
       
   623 		return $output;
       
   624 	}
       
   625 
       
   626 	/**
       
   627 	 * Determines script dependencies.
       
   628 	 *
       
   629 	 * @since 2.1.0
       
   630 	 *
       
   631 	 * @see WP_Dependencies::all_deps()
       
   632 	 *
       
   633 	 * @param string|string[] $handles   Item handle (string) or item handles (array of strings).
       
   634 	 * @param bool            $recursion Optional. Internal flag that function is calling itself.
       
   635 	 *                                   Default false.
       
   636 	 * @param int|false       $group     Optional. Group level: level (int), no groups (false).
       
   637 	 *                                   Default false.
       
   638 	 * @return bool True on success, false on failure.
       
   639 	 */
       
   640 	public function all_deps( $handles, $recursion = false, $group = false ) {
       
   641 		$r = parent::all_deps( $handles, $recursion, $group );
       
   642 		if ( ! $recursion ) {
       
   643 			/**
       
   644 			 * Filters the list of script dependencies left to print.
       
   645 			 *
       
   646 			 * @since 2.3.0
       
   647 			 *
       
   648 			 * @param string[] $to_do An array of script dependency handles.
       
   649 			 */
       
   650 			$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
       
   651 		}
       
   652 		return $r;
       
   653 	}
       
   654 
       
   655 	/**
       
   656 	 * Processes items and dependencies for the head group.
       
   657 	 *
       
   658 	 * @since 2.8.0
       
   659 	 *
       
   660 	 * @see WP_Dependencies::do_items()
       
   661 	 *
       
   662 	 * @return string[] Handles of items that have been processed.
       
   663 	 */
       
   664 	public function do_head_items() {
       
   665 		$this->do_items( false, 0 );
       
   666 		return $this->done;
       
   667 	}
       
   668 
       
   669 	/**
       
   670 	 * Processes items and dependencies for the footer group.
       
   671 	 *
       
   672 	 * @since 2.8.0
       
   673 	 *
       
   674 	 * @see WP_Dependencies::do_items()
       
   675 	 *
       
   676 	 * @return string[] Handles of items that have been processed.
       
   677 	 */
       
   678 	public function do_footer_items() {
       
   679 		$this->do_items( false, 1 );
       
   680 		return $this->done;
       
   681 	}
       
   682 
       
   683 	/**
       
   684 	 * Whether a handle's source is in a default directory.
       
   685 	 *
       
   686 	 * @since 2.8.0
       
   687 	 *
       
   688 	 * @param string $src The source of the enqueued script.
       
   689 	 * @return bool True if found, false if not.
       
   690 	 */
       
   691 	public function in_default_dir( $src ) {
       
   692 		if ( ! $this->default_dirs ) {
       
   693 			return true;
       
   694 		}
       
   695 
       
   696 		if ( 0 === strpos( $src, '/' . WPINC . '/js/l10n' ) ) {
       
   697 			return false;
       
   698 		}
       
   699 
       
   700 		foreach ( (array) $this->default_dirs as $test ) {
       
   701 			if ( 0 === strpos( $src, $test ) ) {
       
   702 				return true;
       
   703 			}
       
   704 		}
       
   705 		return false;
       
   706 	}
       
   707 
       
   708 	/**
       
   709 	 * Resets class properties.
       
   710 	 *
       
   711 	 * @since 2.8.0
       
   712 	 */
       
   713 	public function reset() {
       
   714 		$this->do_concat      = false;
       
   715 		$this->print_code     = '';
       
   716 		$this->concat         = '';
       
   717 		$this->concat_version = '';
       
   718 		$this->print_html     = '';
       
   719 		$this->ext_version    = '';
       
   720 		$this->ext_handles    = '';
       
   721 	}
       
   722 }