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   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  }