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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 $print_code = '';
  29      var $default_dirs;
  30  
  31  	function __construct() {
  32          do_action_ref_array( 'wp_default_styles', array(&$this) );
  33      }
  34  
  35  	function do_item( $handle ) {
  36          if ( !parent::do_item($handle) )
  37              return false;
  38  
  39          $obj = $this->registered[$handle];
  40          if ( null === $obj->ver )
  41              $ver = '';
  42          else
  43              $ver = $obj->ver ? $obj->ver : $this->default_version;
  44  
  45          if ( isset($this->args[$handle]) )
  46              $ver = $ver ? $ver . '&amp;' . $this->args[$handle] : $this->args[$handle];
  47  
  48          if ( $this->do_concat ) {
  49              if ( $this->in_default_dir($obj->src) && !isset($obj->extra['conditional']) && !isset($obj->extra['alt']) ) {
  50                  $this->concat .= "$handle,";
  51                  $this->concat_version .= "$handle$ver";
  52  
  53                  $this->print_code .= $this->print_inline_style( $handle, false );
  54  
  55                  return true;
  56              }
  57          }
  58  
  59          if ( isset($obj->args) )
  60              $media = esc_attr( $obj->args );
  61          else
  62              $media = 'all';
  63  
  64          $href = $this->_css_href( $obj->src, $ver, $handle );
  65          $rel = isset($obj->extra['alt']) && $obj->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
  66          $title = isset($obj->extra['title']) ? "title='" . esc_attr( $obj->extra['title'] ) . "'" : '';
  67  
  68          $tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
  69          if ( 'rtl' === $this->text_direction && isset($obj->extra['rtl']) && $obj->extra['rtl'] ) {
  70              if ( is_bool( $obj->extra['rtl'] ) || 'replace' === $obj->extra['rtl'] ) {
  71                  $suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : '';
  72                  $rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $obj->src , $ver, "$handle-rtl" ));
  73              } else {
  74                  $rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
  75              }
  76  
  77              $rtl_tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  78  
  79              if ( $obj->extra['rtl'] === 'replace' ) {
  80                  $tag = $rtl_tag;
  81              } else {
  82                  $tag .= $rtl_tag;
  83              }
  84          }
  85  
  86          if ( isset($obj->extra['conditional']) && $obj->extra['conditional'] ) {
  87              $tag = "<!--[if {$obj->extra['conditional']}]>\n" . $tag . "<![endif]-->\n";
  88          }
  89  
  90          if ( $this->do_concat ) {
  91              $this->print_html .= $tag;
  92              if ( $inline_style = $this->print_inline_style( $handle, false ) )
  93                  $this->print_html .= sprintf( "<style type='text/css'>\n%s\n</style>\n", $inline_style );
  94          } else {
  95              echo $tag;
  96              $this->print_inline_style( $handle );
  97          }
  98  
  99          return true;
 100      }
 101  
 102  	function add_inline_style( $handle, $code ) {
 103          if ( !$code )
 104              return false;
 105  
 106          $after = $this->get_data( $handle, 'after' );
 107          if ( !$after )
 108              $after = array();
 109  
 110          $after[] = $code;
 111  
 112          return $this->add_data( $handle, 'after', $after );
 113      }
 114  
 115  	function print_inline_style( $handle, $echo = true ) {
 116          $output = $this->get_data( $handle, 'after' );
 117  
 118          if ( empty( $output ) )
 119              return false;
 120  
 121          $output = implode( "\n", $output );
 122  
 123          if ( !$echo )
 124              return $output;
 125  
 126          echo "<style type='text/css'>\n";
 127          echo "$output\n";
 128          echo "</style>\n";
 129  
 130          return true;
 131      }
 132  
 133  	function all_deps( $handles, $recursion = false, $group = false ) {
 134          $r = parent::all_deps( $handles, $recursion );
 135          if ( !$recursion )
 136              $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
 137          return $r;
 138      }
 139  
 140  	function _css_href( $src, $ver, $handle ) {
 141          if ( !is_bool($src) && !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 142              $src = $this->base_url . $src;
 143          }
 144  
 145          if ( !empty($ver) )
 146              $src = add_query_arg('ver', $ver, $src);
 147          $src = apply_filters( 'style_loader_src', $src, $handle );
 148          return esc_url( $src );
 149      }
 150  
 151  	function in_default_dir($src) {
 152          if ( ! $this->default_dirs )
 153              return true;
 154  
 155          foreach ( (array) $this->default_dirs as $test ) {
 156              if ( 0 === strpos($src, $test) )
 157                  return true;
 158          }
 159          return false;
 160      }
 161  
 162  	function do_footer_items() { // HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
 163          $this->do_items(false, 1);
 164          return $this->done;
 165      }
 166  
 167  	function reset() {
 168          $this->do_concat = false;
 169          $this->concat = '';
 170          $this->concat_version = '';
 171          $this->print_html = '';
 172      }
 173  }