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   1  <?php
   2  /**
   3   * BackPress Styles enqueue.
   4   *
   5   * These classes were refactored from the WordPress WP_Scripts and WordPress
   6   * script enqueue API.
   7   *
   8   * @package BackPress
   9   * @since r74
  10   */
  11  
  12  /**
  13   * BackPress Styles enqueue class.
  14   *
  15   * @package BackPress
  16   * @uses WP_Dependencies
  17   * @since r74
  18   */
  19  class WP_Styles extends WP_Dependencies {
  20      var $base_url;
  21      var $default_version;
  22      var $text_direction = 'ltr';
  23  
  24  	function __construct() {
  25          do_action_ref_array( 'wp_default_styles', array(&$this) );
  26      }
  27  
  28  	function do_item( $handle ) {
  29          if ( !parent::do_item($handle) )
  30              return false;
  31  
  32          $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
  33          if ( isset($this->args[$handle]) )
  34              $ver .= '&amp;' . $this->args[$handle];
  35  
  36          if ( isset($this->registered[$handle]->args) )
  37              $media = attribute_escape( $this->registered[$handle]->args );
  38          else
  39              $media = 'all';
  40  
  41          $href = $this->_css_href( $this->registered[$handle]->src, $ver, $handle );
  42  
  43          $end_cond = '';
  44          if ( isset($this->registered[$handle]->extra['conditional']) && $this->registered[$handle]->extra['conditional'] ) {
  45              echo "<!--[if {$this->registered[$handle]->extra['conditional']}]>\n";
  46              $end_cond = "<![endif]-->\n";
  47          }
  48  
  49          echo apply_filters( 'style_loader_tag', "<link rel='stylesheet' href='$href' type='text/css' media='$media' />\n", $handle );
  50          if ( 'rtl' === $this->text_direction && isset($this->registered[$handle]->extra['rtl']) && $this->registered[$handle]->extra['rtl'] ) {
  51              if ( is_bool( $this->registered[$handle]->extra['rtl'] ) )
  52                  $rtl_href = str_replace( '.css', '-rtl.css', $href );
  53              else
  54                  $rtl_href = $this->_css_href( $this->registered[$handle]->extra['rtl'], $ver, "$handle-rtl" );
  55  
  56              echo apply_filters( 'style_loader_tag', "<link rel='stylesheet' href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  57          }
  58  
  59          echo $end_cond;
  60  
  61          // Could do something with $this->registered[$handle]->extra here to print out extra CSS rules
  62  //        echo "<style type='text/css'>\n";
  63  //        echo "/* <![CDATA[ */\n";
  64  //        echo "/* ]]> */\n";
  65  //        echo "</style>\n";
  66  
  67          return true;
  68      }
  69  
  70  	function all_deps( $handles, $recursion = false ) {
  71          $r = parent::all_deps( $handles, $recursion );
  72          if ( !$recursion )
  73              $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
  74          return $r;
  75      }
  76  
  77  	function _css_href( $src, $ver, $handle ) {
  78          if ( !preg_match('|^https?://|', $src) && !preg_match('|^' . preg_quote(WP_CONTENT_URL) . '|', $src) ) {
  79              $src = $this->base_url . $src;
  80          }
  81  
  82          $src = add_query_arg('ver', $ver, $src);
  83          $src = apply_filters( 'style_loader_src', $src, $handle );
  84          return clean_url( $src );
  85      }
  86  
  87  }