wp-includes/class.wp-styles.php

   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 }