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                 $tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-css' $title href='$href' type='text/css' media='$media' />\n", $handle );
  69                 if ( 'rtl' === $this->text_direction && isset($obj->extra['rtl']) && $obj->extra['rtl'] ) {
  70                         if ( is_bool( $obj->extra['rtl'] ) || 'replace' === $obj->extra['rtl'] ) {
  71                                 $suffix = isset( $obj->extra['suffix'] ) ? $obj->extra['suffix'] : '';
  72                                 $rtl_href = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $this->_css_href( $obj->src , $ver, "$handle-rtl" ));
  73                         } else {
  74                                 $rtl_href = $this->_css_href( $obj->extra['rtl'], $ver, "$handle-rtl" );
  75                         }
  76
  77                         $rtl_tag = apply_filters( 'style_loader_tag', "<link rel='$rel' id='$handle-rtl-css' $title href='$rtl_href' type='text/css' media='$media' />\n", $handle );
  78
  79                         if ( $obj->extra['rtl'] === 'replace' ) {
  80                                 $tag = $rtl_tag;
  81                         } else {
  82                                 $tag .= $rtl_tag;
  83                         }
  84                 }
  85
  86                 if ( isset($obj->extra['conditional']) && $obj->extra['conditional'] ) {
  87                         $tag = "<!--[if {$obj->extra['conditional']}]>\n" . $tag . "<![endif]-->\n";
  88                 }
  89
  90                 if ( $this->do_concat ) {
  91                         $this->print_html .= $tag;
  92                         if ( $inline_style = $this->print_inline_style( $handle, false ) )
  93                                 $this->print_html .= sprintf( "<style type='text/css'>\n%s\n</style>\n", $inline_style );
  94                 } else {
  95                         echo $tag;
  96                         $this->print_inline_style( $handle );
  97                 }
  98
  99                 return true;
 100         }
 101
 102         function add_inline_style( $handle, $code ) {
 103                 if ( !$code )
 104                         return false;
 105
 106                 $after = $this->get_data( $handle, 'after' );
 107                 if ( !$after )
 108                         $after = array();
 109
 110                 $after[] = $code;
 111
 112                 return $this->add_data( $handle, 'after', $after );
 113         }
 114
 115         function print_inline_style( $handle, $echo = true ) {
 116                 $output = $this->get_data( $handle, 'after' );
 117
 118                 if ( empty( $output ) )
 119                         return false;
 120
 121                 $output = implode( "\n", $output );
 122
 123                 if ( !$echo )
 124                         return $output;
 125
 126                 echo "<style type='text/css'>\n";
 127                 echo "$output\n";
 128                 echo "</style>\n";
 129
 130                 return true;
 131         }
 132
 133         function all_deps( $handles, $recursion = false, $group = false ) {
 134                 $r = parent::all_deps( $handles, $recursion );
 135                 if ( !$recursion )
 136                         $this->to_do = apply_filters( 'print_styles_array', $this->to_do );
 137                 return $r;
 138         }
 139
 140         function _css_href( $src, $ver, $handle ) {
 141                 if ( !is_bool($src) && !preg_match('|^(https?:)?//|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 142                         $src = $this->base_url . $src;
 143                 }
 144
 145                 if ( !empty($ver) )
 146                         $src = add_query_arg('ver', $ver, $src);
 147                 $src = apply_filters( 'style_loader_src', $src, $handle );
 148                 return esc_url( $src );
 149         }
 150
 151         function in_default_dir($src) {
 152                 if ( ! $this->default_dirs )
 153                         return true;
 154
 155                 foreach ( (array) $this->default_dirs as $test ) {
 156                         if ( 0 === strpos($src, $test) )
 157                                 return true;
 158                 }
 159                 return false;
 160         }
 161
 162         function do_footer_items() { // HTML 5 allows styles in the body, grab late enqueued items and output them in the footer.
 163                 $this->do_items(false, 1);
 164                 return $this->done;
 165         }
 166
 167         function reset() {
 168                 $this->do_concat = false;
 169                 $this->concat = '';
 170                 $this->concat_version = '';
 171                 $this->print_html = '';
 172         }
 173 }