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<?php
/**
* BackPress script procedural API.
*
* @package BackPress
* @since r16
*/
/**
* Prints script tags in document head.
*
* Called by admin-header.php and by 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. Does make use of already
* instantiated $wp_scripts if present. Use provided wp_print_scripts hook to
* register/enqueue new scripts.
*
* @since r16
* @see WP_Dependencies::print_scripts()
*/
function wp_print_scripts( $handles = false ) {
do_action( 'wp_print_scripts' );
if ( '' === $handles ) // for wp_head
$handles = false;
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
if ( !$handles )
return array(); // No need to instantiate if nothing is there.
else
$wp_scripts = new WP_Scripts();
}
return $wp_scripts->do_items( $handles );
}
/**
* Register new Javascript file.
*
* @since r16
* @param string $handle Script name
* @param string $src Script url
* @param array $deps (optional) Array of script names on which this script depends
* @param string|bool $ver (optional) Script version (used for cache busting), set to null to disable
* @param bool $in_footer (optional) Whether to enqueue the script before </head> or before </body>
* @return null
*/
function wp_register_script( $handle, $src, $deps = array(), $ver = false, $in_footer = false ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
$wp_scripts = new WP_Scripts();
}
$wp_scripts->add( $handle, $src, $deps, $ver );
if ( $in_footer )
$wp_scripts->add_data( $handle, 'group', 1 );
}
/**
* Wrapper for $wp_scripts->localize().
*
* Used to localizes a script.
* Works only if the script has already been added.
* Accepts an associative array $l10n and creates JS object:
* "$object_name" = {
* key: value,
* key: value,
* ...
* }
* See http://core.trac.wordpress.org/ticket/11520 for more information.
*
* @since r16
*
* @param string $handle The script handle that was registered or used in script-loader
* @param string $object_name Name for the created JS object. This is passed directly so it should be qualified JS variable /[a-zA-Z0-9_]+/
* @param array $l10n Associative PHP array containing the translated strings. HTML entities will be converted and the array will be JSON encoded.
* @return bool Whether the localization was added successfully.
*/
function wp_localize_script( $handle, $object_name, $l10n ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
return false;
}
return $wp_scripts->localize( $handle, $object_name, $l10n );
}
/**
* Remove a registered script.
*
* @since r16
* @see WP_Scripts::remove() For parameter information.
*/
function wp_deregister_script( $handle ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
$wp_scripts = new WP_Scripts();
}
$wp_scripts->remove( $handle );
}
/**
* Enqueues script.
*
* Registers the script if src provided (does NOT overwrite) and enqueues.
*
* @since r16
* @see wp_register_script() For parameter information.
*/
function wp_enqueue_script( $handle, $src = false, $deps = array(), $ver = false, $in_footer = false ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
$wp_scripts = new WP_Scripts();
}
if ( $src ) {
$_handle = explode('?', $handle);
$wp_scripts->add( $_handle[0], $src, $deps, $ver );
if ( $in_footer )
$wp_scripts->add_data( $_handle[0], 'group', 1 );
}
$wp_scripts->enqueue( $handle );
}
/**
* Remove an enqueued script.
*
* @since WP 3.1
* @see WP_Scripts::dequeue() For parameter information.
*/
function wp_dequeue_script( $handle ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
$wp_scripts = new WP_Scripts();
}
$wp_scripts->dequeue( $handle );
}
/**
* Check whether script has been added to WordPress Scripts.
*
* By default, checks if the script has been enqueued. You can also
* pass 'registered' to $list, to see if the script is registered,
* and you can check processing statuses with 'to_do' and 'done'.
*
* @since WP unknown; BP unknown
*
* @param string $handle Name of the script.
* @param string $list Optional. Defaults to 'enqueued'. Values are
* 'registered', 'enqueued' (or 'queue'), 'to_do', and 'done'.
* @return bool Whether script is in the list.
*/
function wp_script_is( $handle, $list = 'enqueued' ) {
global $wp_scripts;
if ( ! is_a( $wp_scripts, 'WP_Scripts' ) ) {
if ( ! did_action( 'init' ) )
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Scripts and styles should not be registered or enqueued until the %1$s, %2$s, or %3$s hooks.' ),
'<code>wp_enqueue_scripts</code>', '<code>admin_enqueue_scripts</code>', '<code>init</code>' ), '3.3' );
$wp_scripts = new WP_Scripts();
}
return (bool) $wp_scripts->query( $handle, $list );
}
