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 $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                 $end_cond = $tag = '';
  69                 if ( isset($obj->extra['conditional']) && $obj->extra['conditional'] ) {
  70                         $tag .= "<!--[if {$obj->extra['conditional']}]>\n";
  71                         $end_cond = "<![endif]-->\n";
  72                 }
  73
  74                 $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
  75                 if ( 'rtl' === $this->text_direction && isset($obj->extra['rtl']) && $obj->extra['rtl'] ) {
  76                         if ( is_bool( $obj->extra['rtl'] ) ) {
  77                                 $suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : '';
  78                                 $rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $obj->src , $ver, "$handle-rtl" ));
  79                         } else {
  80                                 $rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
  81                         }
  82
  83                         $tag .= apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  84                 }
  85
  86                 $tag .= $end_cond;
  87
  88                 if ( $this->do_concat ) {
  89                         $this->print_html .= $tag;
  90                         if ( $inline_style = $this->print_inline_style( $handle, false ) )
  91                                 $this->print_html .= sprintf( "<style type='text/css'>\n%s\n</style>\n", $inline_style );
  92                 } else {
  93                         echo $tag;
  94                         $this->print_inline_style( $handle );
  95                 }
  96
  97                 return true;
  98         }
  99
 100         function add_inline_style( $handle, $code ) {
 101                 if ( !$code )
 102                         return false;
 103
 104                 $after = $this->get_data( $handle, 'after' );
 105                 if ( !$after )
 106                         $after = array();
 107
 108                 $after[] = $code;
 109
 110                 return $this->add_data( $handle, 'after', $after );
 111         }
 112
 113         function print_inline_style( $handle, $echo = true ) {
 114                 $output = $this->get_data( $handle, 'after' );
 115
 116                 if ( empty( $output ) )
 117                         return false;
 118
 119                 $output = implode( "\n", $output );
 120
 121                 if ( !$echo )
 122                         return $output;
 123
 124                 echo "<style type='text/css'>\n";
 125                 echo "$output\n";
 126                 echo "</style>\n";
 127
 128                 return true;
 129         }
 130
 131         function all_deps( $handles, $recursion = false, $group = false ) {
 132                 $r = parent::all_deps( $handles, $recursion );
 133                 if ( !$recursion )
 134                         $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
 135                 return $r;
 136         }
 137
 138         function _css_href( $src, $ver, $handle ) {
 139                 if ( !is_bool($src) && !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 140                         $src = $this->base_url . $src;
 141                 }
 142
 143                 if ( !empty($ver) )
 144                         $src = add_query_arg('ver', $ver, $src);
 145                 $src = apply_filters( 'style_loader_src', $src, $handle );
 146                 return esc_url( $src );
 147         }
 148
 149         function in_default_dir($src) {
 150                 if ( ! $this->default_dirs )
 151                         return true;
 152
 153                 foreach ( (array) $this->default_dirs as $test ) {
 154                         if ( 0 === strpos($src, $test) )
 155                                 return true;
 156                 }
 157                 return false;
 158         }
 159
 160         function do_footer_items() { // HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
 161                 $this->do_items(false, 1);
 162                 return $this->done;
 163         }
 164
 165         function reset() {
 166                 $this->do_concat = false;
 167                 $this->concat = '';
 168                 $this->concat_version = '';
 169                 $this->print_html = '';
 170         }
 171 }