wp-includes/class.wp-styles.php

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