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                 if ( null === $this->registered[$handle]->ver )
  39                         $ver = '';
  40                 else
  41                         $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
  42
  43                 if ( isset($this->args[$handle]) )
  44                         $ver = $ver ? $ver . '&amp;' . $this->args[$handle] : $this->args[$handle];
  45
  46                 if ( $this->do_concat ) {
  47                         if ( $this->in_default_dir($this->registered[$handle]->src) && !isset($this->registered[$handle]->extra['conditional']) && !isset($this->registered[$handle]->extra['alt']) ) {
  48                                 $this->concat .= "$handle,";
  49                                 $this->concat_version .= "$handle$ver";
  50                                 return true;
  51                         }
  52                 }
  53
  54                 if ( isset($this->registered[$handle]->args) )
  55                         $media = esc_attr( $this->registered[$handle]->args );
  56                 else
  57                         $media = 'all';
  58
  59                 $href = $this->_css_href( $this->registered[$handle]->src, $ver, $handle );
  60                 $rel = isset($this->registered[$handle]->extra['alt']) && $this->registered[$handle]->extra['alt'] ? 'alternate stylesheet' : 'stylesheet';
  61                 $title = isset($this->registered[$handle]->extra['title']) ? "title='" . esc_attr( $this->registered[$handle]->extra['title'] ) . "'" : '';
  62
  63                 $end_cond = $tag = '';
  64                 if ( isset($this->registered[$handle]->extra['conditional']) && $this->registered[$handle]->extra['conditional'] ) {
  65                         $tag .= "<!--[if {$this->registered[$handle]->extra['conditional']}]>\n";
  66                         $end_cond = "<![endif]-->\n";
  67                 }
  68
  69                 $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
  70                 if ( 'rtl' === $this->text_direction && isset($this->registered[$handle]->extra['rtl']) && $this->registered[$handle]->extra['rtl'] ) {
  71                         if ( is_bool( $this->registered[$handle]->extra['rtl'] ) ) {
  72                                 $suffix = isset( $this->registered[$handle]->extra['suffix'] ) ? $this->registered[$handle]->extra['suffix'] : '';
  73                                 $rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $this->registered[$handle]->src , $ver, "$handle-rtl" ));
  74                         } else {
  75                                 $rtl_href = $this->_css_href( $this->registered[$handle]->extra['rtl'], $ver, "$handle-rtl" );
  76                         }
  77
  78                         $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  79                 }
  80
  81                 $tag .= $end_cond;
  82
  83                 if ( $this->do_concat )
  84                         $this->print_html .= $tag;
  85                 else
  86                         echo $tag;
  87
  88                 // Could do something with $this->registered[$handle]->extra here to print out extra CSS rules
  89 //              echo "<style type='text/css'>\n";
  90 //              echo "/* <![CDATA[ */\n";
  91 //              echo "/* ]]> */\n";
  92 //              echo "</style>\n";
  93
  94                 return true;
  95         }
  96
  97         function all_deps( $handles, $recursion = false, $group = false ) {
  98                 $r = parent::all_deps( $handles, $recursion );
  99                 if ( !$recursion )
 100                         $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
 101                 return $r;
 102         }
 103
 104         function _css_href( $src, $ver, $handle ) {
 105                 if ( !is_bool($src) && !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 106                         $src = $this->base_url . $src;
 107                 }
 108
 109                 if ( !empty($ver) )
 110                         $src = add_query_arg('ver', $ver, $src);
 111                 $src = apply_filters( 'style_loader_src', $src, $handle );
 112                 return esc_url( $src );
 113         }
 114
 115         function in_default_dir($src) {
 116                 if ( ! $this->default_dirs )
 117                         return true;
 118
 119                 foreach ( (array) $this->default_dirs as $test ) {
 120                         if ( 0 === strpos($src, $test) )
 121                                 return true;
 122                 }
 123                 return false;
 124         }
 125
 126 }