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class.wp-scripts.php (18938B)

---

 <?php
 /**
  * Dependencies API: WP_Scripts class
  *
  * @since 2.6.0
  *
  * @package WordPress
  * @subpackage Dependencies
  */
 
 /**
  * Core class used to register scripts.
  *
  * @since 2.1.0
  *
  * @see WP_Dependencies
  */
 class WP_Scripts extends WP_Dependencies {
 	/**
 	 * Base URL for scripts.
 	 *
 	 * Full URL with trailing slash.
 	 *
 	 * @since 2.6.0
 	 * @var string
 	 */
 	public $base_url;
 
 	/**
 	 * URL of the content directory.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $content_url;
 
 	/**
 	 * Default version string for scripts.
 	 *
 	 * @since 2.6.0
 	 * @var string
 	 */
 	public $default_version;
 
 	/**
 	 * Holds handles of scripts which are enqueued in footer.
 	 *
 	 * @since 2.8.0
 	 * @var array
 	 */
 	public $in_footer = array();
 
 	/**
 	 * Holds a list of script handles which will be concatenated.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $concat = '';
 
 	/**
 	 * Holds a string which contains script handles and their version.
 	 *
 	 * @since 2.8.0
 	 * @deprecated 3.4.0
 	 * @var string
 	 */
 	public $concat_version = '';
 
 	/**
 	 * Whether to perform concatenation.
 	 *
 	 * @since 2.8.0
 	 * @var bool
 	 */
 	public $do_concat = false;
 
 	/**
 	 * Holds HTML markup of scripts and additional data if concatenation
 	 * is enabled.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $print_html = '';
 
 	/**
 	 * Holds inline code if concatenation is enabled.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $print_code = '';
 
 	/**
 	 * Holds a list of script handles which are not in the default directory
 	 * if concatenation is enabled.
 	 *
 	 * Unused in core.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $ext_handles = '';
 
 	/**
 	 * Holds a string which contains handles and versions of scripts which
 	 * are not in the default directory if concatenation is enabled.
 	 *
 	 * Unused in core.
 	 *
 	 * @since 2.8.0
 	 * @var string
 	 */
 	public $ext_version = '';
 
 	/**
 	 * List of default directories.
 	 *
 	 * @since 2.8.0
 	 * @var array
 	 */
 	public $default_dirs;
 
 	/**
 	 * Holds a string which contains the type attribute for script tag.
 	 *
 	 * If the current theme does not declare HTML5 support for 'script',
 	 * then it initializes as `type='text/javascript'`.
 	 *
 	 * @since 5.3.0
 	 * @var string
 	 */
 	private $type_attr = '';
 
 	/**
 	 * Constructor.
 	 *
 	 * @since 2.6.0
 	 */
 	public function __construct() {
 		$this->init();
 		add_action( 'init', array( $this, 'init' ), 0 );
 	}
 
 	/**
 	 * Initialize the class.
 	 *
 	 * @since 3.4.0
 	 */
 	public function init() {
 		if (
 			function_exists( 'is_admin' ) && ! is_admin()
 		&&
 			function_exists( 'current_theme_supports' ) && ! current_theme_supports( 'html5', 'script' )
 		) {
 			$this->type_attr = " type='text/javascript'";
 		}
 
 		/**
 		 * Fires when the WP_Scripts instance is initialized.
 		 *
 		 * @since 2.6.0
 		 *
 		 * @param WP_Scripts $this WP_Scripts instance (passed by reference).
 		 */
 		do_action_ref_array( 'wp_default_scripts', array( &$this ) );
 	}
 
 	/**
 	 * Prints scripts.
 	 *
 	 * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
 	 *
 	 * @since 2.1.0
 	 * @since 2.8.0 Added the `$group` parameter.
 	 *
 	 * @param string|string[]|false $handles Optional. Scripts to be printed: queue (false),
 	 *                                       single script (string), or multiple scripts (array of strings).
 	 *                                       Default false.
 	 * @param int|false             $group   Optional. Group level: level (int), no groups (false).
 	 *                                       Default false.
 	 * @return string[] Handles of scripts that have been printed.
 	 */
 	public function print_scripts( $handles = false, $group = false ) {
 		return $this->do_items( $handles, $group );
 	}
 
 	/**
 	 * Prints extra scripts of a registered script.
 	 *
 	 * @since 2.1.0
 	 * @since 2.8.0 Added the `$echo` parameter.
 	 * @deprecated 3.3.0
 	 *
 	 * @see print_extra_script()
 	 *
 	 * @param string $handle The script's registered handle.
 	 * @param bool   $echo   Optional. Whether to echo the extra script
 	 *                       instead of just returning it. Default true.
 	 * @return bool|string|void Void if no data exists, extra scripts if `$echo` is true,
 	 *                          true otherwise.
 	 */
 	public function print_scripts_l10n( $handle, $echo = true ) {
 		_deprecated_function( __FUNCTION__, '3.3.0', 'WP_Scripts::print_extra_script()' );
 		return $this->print_extra_script( $handle, $echo );
 	}
 
 	/**
 	 * Prints extra scripts of a registered script.
 	 *
 	 * @since 3.3.0
 	 *
 	 * @param string $handle The script's registered handle.
 	 * @param bool   $echo   Optional. Whether to echo the extra script
 	 *                       instead of just returning it. Default true.
 	 * @return bool|string|void Void if no data exists, extra scripts if `$echo` is true,
 	 *                          true otherwise.
 	 */
 	public function print_extra_script( $handle, $echo = true ) {
 		$output = $this->get_data( $handle, 'data' );
 		if ( ! $output ) {
 			return;
 		}
 
 		if ( ! $echo ) {
 			return $output;
 		}
 
 		printf( "<script%s id='%s-js-extra'>\n", $this->type_attr, esc_attr( $handle ) );
 
 		// CDATA is not needed for HTML 5.
 		if ( $this->type_attr ) {
 			echo "/* <![CDATA[ */\n";
 		}
 
 		echo "$output\n";
 
 		if ( $this->type_attr ) {
 			echo "/* ]]> */\n";
 		}
 
 		echo "</script>\n";
 
 		return true;
 	}
 
 	/**
 	 * Processes a script dependency.
 	 *
 	 * @since 2.6.0
 	 * @since 2.8.0 Added the `$group` parameter.
 	 *
 	 * @see WP_Dependencies::do_item()
 	 *
 	 * @param string    $handle The script's registered handle.
 	 * @param int|false $group  Optional. Group level: level (int), no groups (false).
 	 *                          Default false.
 	 * @return bool True on success, false on failure.
 	 */
 	public function do_item( $handle, $group = false ) {
 		if ( ! parent::do_item( $handle ) ) {
 			return false;
 		}
 
 		if ( 0 === $group && $this->groups[ $handle ] > 0 ) {
 			$this->in_footer[] = $handle;
 			return false;
 		}
 
 		if ( false === $group && in_array( $handle, $this->in_footer, true ) ) {
 			$this->in_footer = array_diff( $this->in_footer, (array) $handle );
 		}
 
 		$obj = $this->registered[ $handle ];
 
 		if ( null === $obj->ver ) {
 			$ver = '';
 		} else {
 			$ver = $obj->ver ? $obj->ver : $this->default_version;
 		}
 
 		if ( isset( $this->args[ $handle ] ) ) {
 			$ver = $ver ? $ver . '&amp;' . $this->args[ $handle ] : $this->args[ $handle ];
 		}
 
 		$src         = $obj->src;
 		$cond_before = '';
 		$cond_after  = '';
 		$conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
 
 		if ( $conditional ) {
 			$cond_before = "<!--[if {$conditional}]>\n";
 			$cond_after  = "<![endif]-->\n";
 		}
 
 		$before_handle = $this->print_inline_script( $handle, 'before', false );
 		$after_handle  = $this->print_inline_script( $handle, 'after', false );
 
 		if ( $before_handle ) {
 			$before_handle = sprintf( "<script%s id='%s-js-before'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $before_handle );
 		}
 
 		if ( $after_handle ) {
 			$after_handle = sprintf( "<script%s id='%s-js-after'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $after_handle );
 		}
 
 		if ( $before_handle || $after_handle ) {
 			$inline_script_tag = $cond_before . $before_handle . $after_handle . $cond_after;
 		} else {
 			$inline_script_tag = '';
 		}
 
 		$translations = $this->print_translations( $handle, false );
 		if ( $translations ) {
 			$translations = sprintf( "<script%s id='%s-js-translations'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $translations );
 		}
 
 		if ( $this->do_concat ) {
 			/**
 			 * Filters the script loader source.
 			 *
 			 * @since 2.2.0
 			 *
 			 * @param string $src    Script loader source path.
 			 * @param string $handle Script handle.
 			 */
 			$srce = apply_filters( 'script_loader_src', $src, $handle );
 
 			if ( $this->in_default_dir( $srce ) && ( $before_handle || $after_handle || $translations ) ) {
 				$this->do_concat = false;
 
 				// Have to print the so-far concatenated scripts right away to maintain the right order.
 				_print_scripts();
 				$this->reset();
 			} elseif ( $this->in_default_dir( $srce ) && ! $conditional ) {
 				$this->print_code     .= $this->print_extra_script( $handle, false );
 				$this->concat         .= "$handle,";
 				$this->concat_version .= "$handle$ver";
 				return true;
 			} else {
 				$this->ext_handles .= "$handle,";
 				$this->ext_version .= "$handle$ver";
 			}
 		}
 
 		$has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
 
 		if ( $has_conditional_data ) {
 			echo $cond_before;
 		}
 
 		$this->print_extra_script( $handle );
 
 		if ( $has_conditional_data ) {
 			echo $cond_after;
 		}
 
 		// A single item may alias a set of items, by having dependencies, but no source.
 		if ( ! $src ) {
 			if ( $inline_script_tag ) {
 				if ( $this->do_concat ) {
 					$this->print_html .= $inline_script_tag;
 				} else {
 					echo $inline_script_tag;
 				}
 			}
 
 			return true;
 		}
 
 		if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) {
 			$src = $this->base_url . $src;
 		}
 
 		if ( ! empty( $ver ) ) {
 			$src = add_query_arg( 'ver', $ver, $src );
 		}
 
 		/** This filter is documented in wp-includes/class.wp-scripts.php */
 		$src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
 
 		if ( ! $src ) {
 			return true;
 		}
 
 		$tag  = $translations . $cond_before . $before_handle;
 		$tag .= sprintf( "<script%s src='%s' id='%s-js'></script>\n", $this->type_attr, $src, esc_attr( $handle ) );
 		$tag .= $after_handle . $cond_after;
 
 		/**
 		 * Filters the HTML script tag of an enqueued script.
 		 *
 		 * @since 4.1.0
 		 *
 		 * @param string $tag    The `<script>` tag for the enqueued script.
 		 * @param string $handle The script's registered handle.
 		 * @param string $src    The script's source URL.
 		 */
 		$tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
 
 		if ( $this->do_concat ) {
 			$this->print_html .= $tag;
 		} else {
 			echo $tag;
 		}
 
 		return true;
 	}
 
 	/**
 	 * Adds extra code to a registered script.
 	 *
 	 * @since 4.5.0
 	 *
 	 * @param string $handle   Name of the script to add the inline script to.
 	 *                         Must be lowercase.
 	 * @param string $data     String containing the JavaScript to be added.
 	 * @param string $position Optional. Whether to add the inline script
 	 *                         before the handle or after. Default 'after'.
 	 * @return bool True on success, false on failure.
 	 */
 	public function add_inline_script( $handle, $data, $position = 'after' ) {
 		if ( ! $data ) {
 			return false;
 		}
 
 		if ( 'after' !== $position ) {
 			$position = 'before';
 		}
 
 		$script   = (array) $this->get_data( $handle, $position );
 		$script[] = $data;
 
 		return $this->add_data( $handle, $position, $script );
 	}
 
 	/**
 	 * Prints inline scripts registered for a specific handle.
 	 *
 	 * @since 4.5.0
 	 *
 	 * @param string $handle   Name of the script to add the inline script to.
 	 *                         Must be lowercase.
 	 * @param string $position Optional. Whether to add the inline script
 	 *                         before the handle or after. Default 'after'.
 	 * @param bool   $echo     Optional. Whether to echo the script
 	 *                         instead of just returning it. Default true.
 	 * @return string|false Script on success, false otherwise.
 	 */
 	public function print_inline_script( $handle, $position = 'after', $echo = true ) {
 		$output = $this->get_data( $handle, $position );
 
 		if ( empty( $output ) ) {
 			return false;
 		}
 
 		$output = trim( implode( "\n", $output ), "\n" );
 
 		if ( $echo ) {
 			printf( "<script%s id='%s-js-%s'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), esc_attr( $position ), $output );
 		}
 
 		return $output;
 	}
 
 	/**
 	 * Localizes a script, only if the script has already been added.
 	 *
 	 * @since 2.1.0
 	 *
 	 * @param string $handle      Name of the script to attach data to.
 	 * @param string $object_name Name of the variable that will contain the data.
 	 * @param array  $l10n        Array of data to localize.
 	 * @return bool True on success, false on failure.
 	 */
 	public function localize( $handle, $object_name, $l10n ) {
 		if ( 'jquery' === $handle ) {
 			$handle = 'jquery-core';
 		}
 
 		if ( is_array( $l10n ) && isset( $l10n['l10n_print_after'] ) ) { // back compat, preserve the code in 'l10n_print_after' if present.
 			$after = $l10n['l10n_print_after'];
 			unset( $l10n['l10n_print_after'] );
 		}
 
 		if ( ! is_array( $l10n ) ) {
 			_doing_it_wrong(
 				__METHOD__,
 				sprintf(
 					/* translators: 1: $l10n, 2: wp_add_inline_script() */
 					__( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ),
 					'<code>$l10n</code>',
 					'<code>wp_add_inline_script()</code>'
 				),
 				'5.7.0'
 			);
 		}
 
 		if ( is_string( $l10n ) ) {
 			$l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' );
 		} else {
 			foreach ( (array) $l10n as $key => $value ) {
 				if ( ! is_scalar( $value ) ) {
 					continue;
 				}
 
 				$l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
 			}
 		}
 
 		$script = "var $object_name = " . wp_json_encode( $l10n ) . ';';
 
 		if ( ! empty( $after ) ) {
 			$script .= "\n$after;";
 		}
 
 		$data = $this->get_data( $handle, 'data' );
 
 		if ( ! empty( $data ) ) {
 			$script = "$data\n$script";
 		}
 
 		return $this->add_data( $handle, 'data', $script );
 	}
 
 	/**
 	 * Sets handle group.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @see WP_Dependencies::set_group()
 	 *
 	 * @param string    $handle    Name of the item. Should be unique.
 	 * @param bool      $recursion Internal flag that calling function was called recursively.
 	 * @param int|false $group     Optional. Group level: level (int), no groups (false).
 	 *                             Default false.
 	 * @return bool Not already in the group or a lower group.
 	 */
 	public function set_group( $handle, $recursion, $group = false ) {
 		if ( isset( $this->registered[ $handle ]->args ) && 1 === $this->registered[ $handle ]->args ) {
 			$grp = 1;
 		} else {
 			$grp = (int) $this->get_data( $handle, 'group' );
 		}
 
 		if ( false !== $group && $grp > $group ) {
 			$grp = $group;
 		}
 
 		return parent::set_group( $handle, $recursion, $grp );
 	}
 
 	/**
 	 * Sets a translation textdomain.
 	 *
 	 * @since 5.0.0
 	 * @since 5.1.0 The `$domain` parameter was made optional.
 	 *
 	 * @param string $handle Name of the script to register a translation domain to.
 	 * @param string $domain Optional. Text domain. Default 'default'.
 	 * @param string $path   Optional. The full file path to the directory containing translation files.
 	 * @return bool True if the text domain was registered, false if not.
 	 */
 	public function set_translations( $handle, $domain = 'default', $path = null ) {
 		if ( ! isset( $this->registered[ $handle ] ) ) {
 			return false;
 		}
 
 		/** @var \_WP_Dependency $obj */
 		$obj = $this->registered[ $handle ];
 
 		if ( ! in_array( 'wp-i18n', $obj->deps, true ) ) {
 			$obj->deps[] = 'wp-i18n';
 		}
 
 		return $obj->set_translations( $domain, $path );
 	}
 
 	/**
 	 * Prints translations set for a specific handle.
 	 *
 	 * @since 5.0.0
 	 *
 	 * @param string $handle Name of the script to add the inline script to.
 	 *                       Must be lowercase.
 	 * @param bool   $echo   Optional. Whether to echo the script
 	 *                       instead of just returning it. Default true.
 	 * @return string|false Script on success, false otherwise.
 	 */
 	public function print_translations( $handle, $echo = true ) {
 		if ( ! isset( $this->registered[ $handle ] ) || empty( $this->registered[ $handle ]->textdomain ) ) {
 			return false;
 		}
 
 		$domain = $this->registered[ $handle ]->textdomain;
 		$path   = $this->registered[ $handle ]->translations_path;
 
 		$json_translations = load_script_textdomain( $handle, $domain, $path );
 
 		if ( ! $json_translations ) {
 			// Register empty locale data object to ensure the domain still exists.
 			$json_translations = '{ "locale_data": { "messages": { "": {} } } }';
 		}
 
 		$output = <<<JS
 ( function( domain, translations ) {
 	var localeData = translations.locale_data[ domain ] || translations.locale_data.messages;
 	localeData[""].domain = domain;
 	wp.i18n.setLocaleData( localeData, domain );
 } )( "{$domain}", {$json_translations} );
 JS;
 
 		if ( $echo ) {
 			printf( "<script%s id='%s-js-translations'>\n%s\n</script>\n", $this->type_attr, esc_attr( $handle ), $output );
 		}
 
 		return $output;
 	}
 
 	/**
 	 * Determines script dependencies.
 	 *
 	 * @since 2.1.0
 	 *
 	 * @see WP_Dependencies::all_deps()
 	 *
 	 * @param string|string[] $handles   Item handle (string) or item handles (array of strings).
 	 * @param bool            $recursion Optional. Internal flag that function is calling itself.
 	 *                                   Default false.
 	 * @param int|false       $group     Optional. Group level: level (int), no groups (false).
 	 *                                   Default false.
 	 * @return bool True on success, false on failure.
 	 */
 	public function all_deps( $handles, $recursion = false, $group = false ) {
 		$r = parent::all_deps( $handles, $recursion, $group );
 		if ( ! $recursion ) {
 			/**
 			 * Filters the list of script dependencies left to print.
 			 *
 			 * @since 2.3.0
 			 *
 			 * @param string[] $to_do An array of script dependency handles.
 			 */
 			$this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
 		}
 		return $r;
 	}
 
 	/**
 	 * Processes items and dependencies for the head group.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @see WP_Dependencies::do_items()
 	 *
 	 * @return string[] Handles of items that have been processed.
 	 */
 	public function do_head_items() {
 		$this->do_items( false, 0 );
 		return $this->done;
 	}
 
 	/**
 	 * Processes items and dependencies for the footer group.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @see WP_Dependencies::do_items()
 	 *
 	 * @return string[] Handles of items that have been processed.
 	 */
 	public function do_footer_items() {
 		$this->do_items( false, 1 );
 		return $this->done;
 	}
 
 	/**
 	 * Whether a handle's source is in a default directory.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @param string $src The source of the enqueued script.
 	 * @return bool True if found, false if not.
 	 */
 	public function in_default_dir( $src ) {
 		if ( ! $this->default_dirs ) {
 			return true;
 		}
 
 		if ( 0 === strpos( $src, '/' . WPINC . '/js/l10n' ) ) {
 			return false;
 		}
 
 		foreach ( (array) $this->default_dirs as $test ) {
 			if ( 0 === strpos( $src, $test ) ) {
 				return true;
 			}
 		}
 		return false;
 	}
 
 	/**
 	 * Resets class properties.
 	 *
 	 * @since 2.8.0
 	 */
 	public function reset() {
 		$this->do_concat      = false;
 		$this->print_code     = '';
 		$this->concat         = '';
 		$this->concat_version = '';
 		$this->print_html     = '';
 		$this->ext_version    = '';
 		$this->ext_handles    = '';
 	}
 }