<?php

/**

 * BackPress Styles enqueue.

 *

 * These classes were refactored from the WordPress WP_Scripts and WordPress

 * script enqueue API.

 *

 * @package BackPress

 * @since r74

 */

/**

 * BackPress Styles enqueue class.

 *

 * @package BackPress

 * @uses WP_Dependencies

 * @since r74

 */

class WP_Styles extends WP_Dependencies {

	var $base_url;

	var $content_url;

	var $default_version;

	var $text_direction = 'ltr';

	var $concat = '';

	var $concat_version = '';

	var $do_concat = false;

	var $print_html = '';

	var $default_dirs;

	function __construct() {

		do_action_ref_array( 'wp_default_styles', array(&$this) );

	}

	function do_item( $handle ) {

		if ( !parent::do_item($handle) )

			return false;

		$ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;

		if ( isset($this->args[$handle]) )

			$ver .= '&' . $this->args[$handle];

		if ( $this->do_concat ) {

			if ( $this->in_default_dir($this->registered[$handle]->src) && !isset($this->registered[$handle]->extra['conditional']) && !isset($this->registered[$handle]->extra['alt']) ) {

				$this->concat .= "$handle,";

				$this->concat_version .= "$handle$ver";

				return true;

			}

		}

		if ( isset($this->registered[$handle]->args) )

			$media = esc_attr( $this->registered[$handle]->args );

		else

			$media = 'all';

		$href = $this->_css_href( $this->registered[$handle]->src, $ver, $handle );

		$rel = isset($this->registered[$handle]->extra['alt']) && $this->registered[$handle]->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';

		$title = isset($this->registered[$handle]->extra['title']) ? "title='" . esc_attr( $this->registered[$handle]->extra['title'] ) . "'" : '';

		$end_cond = $tag = '';

		if ( isset($this->registered[$handle]->extra['conditional']) && $this->registered[$handle]->extra['conditional'] ) {

			$tag .= "<!--[if {$this->registered[$handle]->extra['conditional']}]>\n";

			$end_cond = "<![endif]-->\n";

		}

		$tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );

		if ( 'rtl' === $this->text_direction && isset($this->registered[$handle]->extra['rtl']) && $this->registered[$handle]->extra['rtl'] ) {

			if ( is_bool( $this->registered[$handle]->extra['rtl'] ) )

				$rtl_href = str_replace( '.css', '-rtl.css', $this->_css_href( $this->registered[$handle]->src , $ver, "$handle-rtl" ));

			else

				$rtl_href = $this->_css_href( $this->registered[$handle]->extra['rtl'], $ver, "$handle-rtl" );

			$tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );

		}

		$tag .= $end_cond;

		if ( $this->do_concat )

			$this->print_html .= $tag;

		else

			echo $tag;

		// Could do something with $this->registered[$handle]->extra here to print out extra CSS rules

//		echo "<style type='text/css'>\n";

//		echo "/* <![CDATA[ */\n";

//		echo "/* ]]> */\n";

//		echo "</style>\n";

		return true;

	}

	function all_deps( $handles, $recursion = false, $group = false ) {

		$r = parent::all_deps( $handles, $recursion );

		if ( !$recursion )

			$this->to_do = apply_filters( 'print_styles_array', $this->to_do );

		return $r;

	}

	function _css_href( $src, $ver, $handle ) {

		if ( !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {

			$src = $this->base_url . $src;

		}

		$src = add_query_arg('ver', $ver, $src);

		$src = apply_filters( 'style_loader_src', $src, $handle );

		return esc_url( $src );

	}

	function in_default_dir($src) {

		if ( ! $this->default_dirs )

			return true;

		foreach ( (array) $this->default_dirs as $test ) {

			if ( 0 === strpos($src, $test) )

				return true;

		}

		return false;

	}

}