<?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_Styles') )

		$wp_styles = new WP_Styles();

	$query = $wp_styles->query( $handle, $list );

	if ( is_object( $query ) )

		return true;

	return $query;

}