<?php

/**

 * Dependencies API: Scripts functions

 *

 * @since 2.6.0

 *

 * @package WordPress

 * @subpackage Dependencies

 */

/**

 * Initialize $wp_scripts if it has not been set.

 *

 * @global WP_Scripts $wp_scripts

 *

 * @since 4.2.0

 *

 * @return WP_Scripts WP_Scripts instance.

 */

function wp_scripts() {

	global $wp_scripts;

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {

		$wp_scripts = new WP_Scripts();

	}

	return $wp_scripts;

}

/**

 * Helper function to output a _doing_it_wrong message when applicable.

 *

 * @ignore

 * @since 4.2.0

 *

 * @param string $function Function name.

 */

function _wp_scripts_maybe_doing_it_wrong( $function ) {

	if ( did_action( 'init' ) || did_action( 'admin_enqueue_scripts' ) || did_action( 'wp_enqueue_scripts' ) || did_action( 'login_enqueue_scripts' ) ) {

		return;

	}

}

/**

 * Prints scripts in document head that are in the $handles queue.

 *

 * Called by admin-header.php and {@see 'wp_head'} hook. Since it is called by wp_head on every page load,

 * the function does not instantiate the WP_Scripts object unless script names are explicitly passed.

 * Makes use of already-instantiated $wp_scripts global if present. Use provided {@see 'wp_print_scripts'}

 * hook to register/enqueue new scripts.

 *

 * @see WP_Scripts::do_items()

 * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.

 *

 * @since 2.1.0

 *

 * @param string|bool|array $handles Optional. Scripts to be printed. Default 'false'.

 * @return array On success, a processed array of WP_Dependencies items; otherwise, an empty array.

 */

function wp_print_scripts( $handles = false ) {

	/**

	 * Fires before scripts in the $handles queue are printed.

	 *

	 * @since 2.1.0

	 */

	do_action( 'wp_print_scripts' );

	if ( '' === $handles ) { // for wp_head

		$handles = false;

	}

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	global $wp_scripts;

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {

		if ( ! $handles ) {

			return array(); // No need to instantiate if nothing is there.

		}

	}

	return wp_scripts()->do_items( $handles );

}

/**

 * Adds extra code to a registered script.

 *

 * Accepts a string $data containing the Code. If two or more code blocks

 * are added to the same script $handle, they will be printed in the order

 * they were added, i.e. the latter added code can redeclare the previous.

 *

 * @since 4.5.0

 *

 * @see WP_Scripts::add_inline_script()

 *

 * @param string $handle   Name of the script to add the inline script to.

 * @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.

 */

function wp_add_inline_script( $handle, $data, $position = 'after' ) {

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	if ( false !== stripos( $data, '</script>' ) ) {

		$data = trim( preg_replace( '#<script[^>]*>(.*)</script>#is', '$1', $data ) );

	}

	return wp_scripts()->add_inline_script( $handle, $data, $position );

}

/**

 * Register a new script.

 *

 * Registers a script to be enqueued later using the wp_enqueue_script() function.

 *

 * @see WP_Dependencies::add()

 * @see WP_Dependencies::add_data()

 *

 * @since 2.1.0

 * @since 4.3.0 A return value was added.

 *

 * @param string           $handle    Name of the script. Should be unique.

 * @param array            $deps      Optional. An array of registered script handles this script depends on. Default empty array.

 * @param string|bool|null $ver       Optional. String specifying script version number, if it has one, which is added to the URL

 *                                    as a query string for cache busting purposes. If version is set to false, a version

 *                                    number is automatically added equal to current installed WordPress version.

 *                                    If set to null, no version is added.

 * @param bool             $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.

 *                                    Default 'false'.

 * @return bool Whether the script has been registered. True on success, false on failure.

 */

function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) {

	$wp_scripts = wp_scripts();

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	$registered = $wp_scripts->add( $handle, $src, $deps, $ver );

	if ( $in_footer ) {

		$wp_scripts->add_data( $handle, 'group', 1 );

	}

	return $registered;

}

/**

 * Localize a script.

 *

 * Works only if the script has already been added.

 *

 * Accepts an associative array $l10n and creates a JavaScript object:

 *

 *     "$object_name" = {

 *         key: value,

 *         key: value,

 *         ...

 *     }

 *

 * @see WP_Dependencies::localize()

 * @link https://core.trac.wordpress.org/ticket/11520

 * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.

 *

 * @since 2.2.0

 *

 * @todo Documentation cleanup

 *

 * @param string $handle      Script handle the data will be attached to.

 * @param string $object_name Name for the JavaScript object. Passed directly, so it should be qualified JS variable.

 *                            Example: '/[a-zA-Z0-9_]+/'.

 * @param array $l10n         The data itself. The data can be either a single or multi-dimensional array.

 * @return bool True if the script was successfully localized, false otherwise.

 */

function wp_localize_script( $handle, $object_name, $l10n ) {

	global $wp_scripts;

	if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {

		_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

		return false;

	}

	return $wp_scripts->localize( $handle, $object_name, $l10n );

}

/**

 * Remove a registered script.

 *

 * Note: there are intentional safeguards in place to prevent critical admin scripts,

 * such as jQuery core, from being unregistered.

 *

 * @see WP_Dependencies::remove()

 *

 * @since 2.1.0

 *

 * @param string $handle Name of the script to be removed.

 */

function wp_deregister_script( $handle ) {

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	/**

	 * Do not allow accidental or negligent de-registering of critical scripts in the admin.

	 * Show minimal remorse if the correct hook is used.

	 */

	$current_filter = current_filter();

	if ( ( is_admin() && 'admin_enqueue_scripts' !== $current_filter ) ||

		( 'wp-login.php' === $GLOBALS['pagenow'] && 'login_enqueue_scripts' !== $current_filter )

	) {

		$no = array(

		);

		if ( in_array( $handle, $no ) ) {

			$message = sprintf(

				/* translators: 1: script name, 2: wp_enqueue_scripts */

				__( 'Do not deregister the %1$s script in the administration area. To target the front-end theme, use the %2$s hook.' ),

				"<code>$handle</code>",

				'<code>wp_enqueue_scripts</code>'

			);

			_doing_it_wrong( __FUNCTION__, $message, '3.6.0' );

			return;

		}

	}

	wp_scripts()->remove( $handle );

}

/**

 * Enqueue a script.

 *

 * Registers the script if $src provided (does NOT overwrite), and enqueues it.

 *

 * @see WP_Dependencies::add()

 * @see WP_Dependencies::add_data()

 * @see WP_Dependencies::enqueue()

 *

 * @since 2.1.0

 *

 * @param string           $handle    Name of the script. Should be unique.

 * @param string           $src       Full URL of the script, or path of the script relative to the WordPress root directory.

 *                                    Default empty.

 * @param array            $deps      Optional. An array of registered script handles this script depends on. Default empty array.

 * @param string|bool|null $ver       Optional. String specifying script version number, if it has one, which is added to the URL

 *                                    as a query string for cache busting purposes. If version is set to false, a version

 *                                    number is automatically added equal to current installed WordPress version.

 *                                    If set to null, no version is added.

 * @param bool             $in_footer Optional. Whether to enqueue the script before </body> instead of in the <head>.

 *                                    Default 'false'.

 */

function wp_enqueue_script( $handle, $src = '', $deps = array(), $ver = false, $in_footer = false ) {

	$wp_scripts = wp_scripts();

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	if ( $src || $in_footer ) {

		$_handle = explode( '?', $handle );

		if ( $src ) {

			$wp_scripts->add( $_handle[0], $src, $deps, $ver );

		}

		if ( $in_footer ) {

			$wp_scripts->add_data( $_handle[0], 'group', 1 );

		}

	}

	$wp_scripts->enqueue( $handle );

}

/**

 * Remove a previously enqueued script.

 *

 * @see WP_Dependencies::dequeue()

 *

 * @since 3.1.0

 *

 * @param string $handle Name of the script to be removed.

 */

function wp_dequeue_script( $handle ) {

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	wp_scripts()->dequeue( $handle );

}

/**

 *

 * @since 2.8.0

 * @since 3.5.0 'enqueued' added as an alias of the 'queue' list.

 *

 * @param string $handle Name of the script.

 * @param string $list   Optional. Status of the script to check. Default 'enqueued'.

 *                       Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.

 * @return bool Whether the script is queued.

 */

function wp_script_is( $handle, $list = 'enqueued' ) {

	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__ );

	return (bool) wp_scripts()->query( $handle, $list );

}

/**

 * Add metadata to a script.

 *

 * Works only if the script has already been added.

 *

 * Possible values for $key and $value:

 * 'conditional' string Comments for IE 6, lte IE 7, etc.

 *

 * @since 4.2.0

 *

 *

 * @param string $handle Name of the script.

 * @param string $key    Name of data point for which we're storing a value.

 * @param mixed  $value  String containing the data to be added.

 * @return bool True on success, false on failure.

 */

	return wp_scripts()->add_data( $handle, $key, $value );

}