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 $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 }