wp-includes/class.wp-scripts.php

   1 <?php
   2 /**
   3  * BackPress Scripts enqueue.
   4  *
   5  * These classes were refactored from the WordPress WP_Scripts and WordPress
   6  * script enqueue API.
   7  *
   8  * @package BackPress
   9  * @since r16
  10  */
  11
  12 /**
  13  * BackPress Scripts enqueue class.
  14  *
  15  * @package BackPress
  16  * @uses WP_Dependencies
  17  * @since r16
  18  */
  19 class WP_Scripts extends WP_Dependencies {
  20         var $base_url; // Full URL with trailing slash
  21         var $default_version;
  22
  23         function __construct() {
  24                 do_action_ref_array( 'wp_default_scripts', array(&$this) );
  25         }
  26
  27         /**
  28          * Prints scripts
  29          *
  30          * Prints the scripts passed to it or the print queue.  Also prints all necessary dependencies.
  31          *
  32          * @param mixed handles (optional) Scripts to be printed.  (void) prints queue, (string) prints that script, (array of strings) prints those scripts.
  33          * @return array Scripts that have been printed
  34          */
  35         function print_scripts( $handles = false ) {
  36                 return $this->do_items( $handles );
  37         }
  38
  39         function print_scripts_l10n( $handle ) {
  40                 if ( empty($this->registered[$handle]->extra['l10n']) || empty($this->registered[$handle]->extra['l10n'][0]) || !is_array($this->registered[$handle]->extra['l10n'][1]) )
  41                         return false;
  42
  43                 $object_name = $this->registered[$handle]->extra['l10n'][0];
  44
  45                 echo "<script type='text/javascript'>\n";
  46                 echo "/* <![CDATA[ */\n";
  47                 echo "\t$object_name = {\n";
  48                 $eol = '';
  49                 foreach ( $this->registered[$handle]->extra['l10n'][1] as $var => $val ) {
  50                         if ( 'l10n_print_after' == $var ) {
  51                                 $after = $val;
  52                                 continue;
  53                         }
  54                         echo "$eol\t\t$var: \"" . js_escape( $val ) . '"';
  55                         $eol = ",\n";
  56                 }
  57                 echo "\n\t}\n";
  58                 echo isset($after) ? "\t$after\n" : '';
  59                 echo "/* ]]> */\n";
  60                 echo "</script>\n";
  61
  62                 return true;
  63         }
  64
  65         function do_item( $handle ) {
  66                 if ( !parent::do_item($handle) )
  67                         return false;
  68
  69                 $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
  70                 if ( isset($this->args[$handle]) )
  71                         $ver .= '&amp;' . $this->args[$handle];
  72
  73                 $src = $this->registered[$handle]->src;
  74                 if ( !preg_match('|^https?://|', $src) && !preg_match('|^' . preg_quote(WP_CONTENT_URL) . '|', $src) ) {
  75                         $src = $this->base_url . $src;
  76                 }
  77
  78                 $src = add_query_arg('ver', $ver, $src);
  79                 $src = clean_url(apply_filters( 'script_loader_src', $src, $handle ));
  80
  81                 $this->print_scripts_l10n( $handle );
  82
  83                 echo "<script type='text/javascript' src='$src'></script>\n";
  84
  85                 return true;
  86         }
  87
  88         /**
  89          * Localizes a script
  90          *
  91          * Localizes only if script has already been added
  92          *
  93          * @param string handle Script name
  94          * @param string object_name Name of JS object to hold l10n info
  95          * @param array l10n Array of JS var name => localized string
  96          * @return bool Successful localization
  97          */
  98         function localize( $handle, $object_name, $l10n ) {
  99                 if ( !$object_name || !$l10n )
 100                         return false;
 101                 return $this->add_data( $handle, 'l10n', array( $object_name, $l10n ) );
 102         }
 103
 104         function all_deps( $handles, $recursion = false ) {
 105                 $r = parent::all_deps( $handles, $recursion );
 106                 if ( !$recursion )
 107                         $this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
 108                 return $r;
 109         }
 110 }