WordPress/wp-includes/functions.wp-styles.php

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<?php
/**
* BackPress styles procedural API.
*
* @package BackPress
* @since r79
*/
/**
* Display styles that are in the queue or part of $handles.
*
* @since r79
* @uses do_action() Calls 'wp_print_styles' hook.
* @global object $wp_styles The WP_Styles object for printing styles.
*
* @param array $handles (optional) Styles to be printed. (void) prints queue, (string) prints that style, (array of strings) prints those styles.
* @return bool True on success, false on failure.
*/
function wp_print_styles( $handles = false ) {
do_action( 'wp_print_styles' );
if ( '' === $handles ) // for wp_head
$handles = false;
global $wp_styles;
if ( !is_a($wp_styles, 'WP_Styles') ) {
if ( !$handles )
return array(); // No need to instantiate if nothing's there.
else
$wp_styles = new WP_Styles();
}
return $wp_styles->do_items( $handles );
}
/**
* Register CSS style file.
*
* @since r79
* @see WP_Styles::add() For parameter and additional information.
*/
function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
global $wp_styles;
if ( !is_a($wp_styles, 'WP_Styles') )
$wp_styles = new WP_Styles();
$wp_styles->add( $handle, $src, $deps, $ver, $media );
}
/**
* Remove a registered CSS file.
*
* @since r79
* @see WP_Styles::remove() For parameter and additional information.
*/
function wp_deregister_style( $handle ) {
global $wp_styles;
if ( !is_a($wp_styles, 'WP_Styles') )
$wp_styles = new WP_Styles();
$wp_styles->remove( $handle );
}
/**
* Enqueue a CSS style file.
*
* @since r79
* @see WP_Styles::add(), WP_Styles::enqueue()
*/
function wp_enqueue_style( $handle, $src = false, $deps = array(), $ver = false, $media = false ) {
global $wp_styles;
if ( !is_a($wp_styles, 'WP_Styles') )
$wp_styles = new WP_Styles();
if ( $src ) {
$_handle = explode('?', $handle);
$wp_styles->add( $_handle[0], $src, $deps, $ver, $media );
}
$wp_styles->enqueue( $handle );
}
/**
* Check whether style has been added to WordPress Styles.
*
* The values for list defaults to 'queue', which is the same as enqueue for
* styles.
*
* @since WP unknown; BP unknown
*
* @param string $handle Handle used to add style.
* @param string $list Optional, defaults to 'queue'. Others values are 'registered', 'queue', 'done', 'to_do'
* @return bool
*/
function wp_style_is( $handle, $list = 'queue' ) {
global $wp_styles;
if ( !is_a($wp_styles, 'WP_Scripts') )
$wp_styles = new WP_Styles();
$query = $wp_styles->query( $handle, $list );
if ( is_object( $query ) )
return true;
return $query;
}