wp-includes/class.wp-scripts.php

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