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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 $content_url;
  22      var $default_version;
  23      var $text_direction = 'ltr';
  24      var $concat = '';
  25      var $concat_version = '';
  26      var $do_concat = false;
  27      var $print_html = '';
  28      var $default_dirs;
  29  
  30  	function __construct() {
  31          do_action_ref_array( 'wp_default_styles', array(&$this) );
  32      }
  33  
  34  	function do_item( $handle ) {
  35          if ( !parent::do_item($handle) )
  36              return false;
  37  
  38          $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
  39          if ( isset($this->args[$handle]) )
  40              $ver .= '&amp;' . $this->args[$handle];
  41  
  42          if ( $this->do_concat ) {
  43              if ( $this->in_default_dir($this->registered[$handle]->src) && !isset($this->registered[$handle]->extra['conditional']) && !isset($this->registered[$handle]->extra['alt']) ) {
  44                  $this->concat .= "$handle,";
  45                  $this->concat_version .= "$handle$ver";
  46                  return true;
  47              }
  48          }
  49  
  50          if ( isset($this->registered[$handle]->args) )
  51              $media = esc_attr( $this->registered[$handle]->args );
  52          else
  53              $media = 'all';
  54  
  55          $href = $this->_css_href( $this->registered[$handle]->src, $ver, $handle );
  56          $rel = isset($this->registered[$handle]->extra['alt']) && $this->registered[$handle]->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
  57          $title = isset($this->registered[$handle]->extra['title']) ? "title='" . esc_attr( $this->registered[$handle]->extra['title'] ) . "'" : '';
  58  
  59          $end_cond = $tag = '';
  60          if ( isset($this->registered[$handle]->extra['conditional']) && $this->registered[$handle]->extra['conditional'] ) {
  61              $tag .= "<!--[if {$this->registered[$handle]->extra['conditional']}]>\n";
  62              $end_cond = "<![endif]-->\n";
  63          }
  64  
  65          $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
  66          if ( 'rtl' === $this->text_direction && isset($this->registered[$handle]->extra['rtl']) && $this->registered[$handle]->extra['rtl'] ) {
  67              if ( is_bool( $this->registered[$handle]->extra['rtl'] ) )
  68                  $rtl_href = str_replace( '.css', '-rtl.css', $this->_css_href( $this->registered[$handle]->src , $ver, "$handle-rtl" ));
  69              else
  70                  $rtl_href = $this->_css_href( $this->registered[$handle]->extra['rtl'], $ver, "$handle-rtl" );
  71  
  72              $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  73          }
  74  
  75          $tag .= $end_cond;
  76  
  77          if ( $this->do_concat )
  78              $this->print_html .= $tag;
  79          else
  80              echo $tag;
  81  
  82          // Could do something with $this->registered[$handle]->extra here to print out extra CSS rules
  83  //        echo "<style type='text/css'>\n";
  84  //        echo "/* <![CDATA[ */\n";
  85  //        echo "/* ]]> */\n";
  86  //        echo "</style>\n";
  87  
  88          return true;
  89      }
  90  
  91  	function all_deps( $handles, $recursion = false, $group = false ) {
  92          $r = parent::all_deps( $handles, $recursion );
  93          if ( !$recursion )
  94              $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
  95          return $r;
  96      }
  97  
  98  	function _css_href( $src, $ver, $handle ) {
  99          if ( !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 100              $src = $this->base_url . $src;
 101          }
 102  
 103          $src = add_query_arg('ver', $ver, $src);
 104          $src = apply_filters( 'style_loader_src', $src, $handle );
 105          return esc_url( $src );
 106      }
 107  
 108  	function in_default_dir($src) {
 109          if ( ! $this->default_dirs )
 110              return true;
 111  
 112          foreach ( (array) $this->default_dirs as $test ) {
 113              if ( 0 === strpos($src, $test) )
 114                  return true;
 115          }
 116          return false;
 117      }
 118  
 119  }