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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 $content_url;
  22      var $default_version;
  23      var $in_footer = array();
  24      var $concat = '';
  25      var $concat_version = '';
  26      var $do_concat = false;
  27      var $print_html = '';
  28      var $print_code = '';
  29      var $ext_handles = '';
  30      var $ext_version = '';
  31      var $default_dirs;
  32  
  33  	function __construct() {
  34          if ( ! function_exists( 'did_action' ) || did_action( 'init' ) )
  35              $this->init();
  36          else
  37              add_action( 'init', array( $this, 'init' ), 0 );
  38      }
  39  
  40  	function init() {
  41          do_action_ref_array( 'wp_default_scripts', array(&$this) );
  42      }
  43  
  44      /**
  45       * Prints scripts
  46       *
  47       * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
  48       *
  49       * @param mixed $handles (optional) Scripts to be printed. (void) prints queue, (string) prints that script, (array of strings) prints those scripts.
  50       * @param int $group (optional) If scripts were queued in groups prints this group number.
  51       * @return array Scripts that have been printed
  52       */
  53  	function print_scripts( $handles = false, $group = false ) {
  54          return $this->do_items( $handles, $group );
  55      }
  56  
  57      // Deprecated since 3.3, see print_extra_script()
  58  	function print_scripts_l10n( $handle, $echo = true ) {
  59          _deprecated_function( __FUNCTION__, '3.3', 'print_extra_script()' );
  60          return $this->print_extra_script( $handle, $echo );
  61      }
  62  
  63  	function print_extra_script( $handle, $echo = true ) {
  64          if ( !$output = $this->get_data( $handle, 'data' ) )
  65              return;
  66  
  67          if ( !$echo )
  68              return $output;
  69  
  70          echo "<script type='text/javascript'>\n"; // CDATA and type='text/javascript' is not needed for HTML 5
  71          echo "/* <![CDATA[ */\n";
  72          echo "$output\n";
  73          echo "/* ]]> */\n";
  74          echo "</script>\n";
  75  
  76          return true;
  77      }
  78  
  79  	function do_item( $handle, $group = false ) {
  80          if ( !parent::do_item($handle) )
  81              return false;
  82  
  83          if ( 0 === $group && $this->groups[$handle] > 0 ) {
  84              $this->in_footer[] = $handle;
  85              return false;
  86          }
  87  
  88          if ( false === $group && in_array($handle, $this->in_footer, true) )
  89              $this->in_footer = array_diff( $this->in_footer, (array) $handle );
  90  
  91          if ( null === $this->registered[$handle]->ver )
  92              $ver = '';
  93          else
  94              $ver = $this->registered[$handle]->ver ? $this->registered[$handle]->ver : $this->default_version;
  95  
  96          if ( isset($this->args[$handle]) )
  97              $ver = $ver ? $ver . '&amp;' . $this->args[$handle] : $this->args[$handle];
  98  
  99          $src = $this->registered[$handle]->src;
 100  
 101          if ( $this->do_concat ) {
 102              $srce = apply_filters( 'script_loader_src', $src, $handle );
 103              if ( $this->in_default_dir($srce) ) {
 104                  $this->print_code .= $this->print_extra_script( $handle, false );
 105                  $this->concat .= "$handle,";
 106                  $this->concat_version .= "$handle$ver";
 107                  return true;
 108              } else {
 109                  $this->ext_handles .= "$handle,";
 110                  $this->ext_version .= "$handle$ver";
 111              }
 112          }
 113  
 114          $this->print_extra_script( $handle );
 115          if ( !preg_match('|^https?://|', $src) && ! ( $this->content_url && 0 === strpos($src, $this->content_url) ) ) {
 116              $src = $this->base_url . $src;
 117          }
 118  
 119          if ( !empty($ver) )
 120              $src = add_query_arg('ver', $ver, $src);
 121  
 122          $src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
 123  
 124          if ( $this->do_concat )
 125              $this->print_html .= "<script type='text/javascript' src='$src'></script>\n";
 126          else
 127              echo "<script type='text/javascript' src='$src'></script>\n";
 128  
 129          return true;
 130      }
 131  
 132      /**
 133       * Localizes a script
 134       *
 135       * Localizes only if the script has already been added
 136       */
 137  	function localize( $handle, $object_name, $l10n ) {
 138          if ( is_array($l10n) && isset($l10n['l10n_print_after']) ) { // back compat, preserve the code in 'l10n_print_after' if present
 139              $after = $l10n['l10n_print_after'];
 140              unset($l10n['l10n_print_after']);
 141          }
 142  
 143          foreach ( (array) $l10n as $key => $value ) {
 144              if ( !is_scalar($value) )
 145                  continue;
 146  
 147              $l10n[$key] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8');
 148          }
 149  
 150          $script = "var $object_name = " . json_encode($l10n) . ';';
 151  
 152          if ( !empty($after) )
 153              $script .= "\n$after;";
 154  
 155          $data = $this->get_data( $handle, 'data' );
 156  
 157          if ( !empty( $data ) )
 158              $script = "$data\n$script";
 159  
 160          return $this->add_data( $handle, 'data', $script );
 161      }
 162  
 163  	function set_group( $handle, $recursion, $group = false ) {
 164  
 165          if ( $this->registered[$handle]->args === 1 )
 166              $grp = 1;
 167          else
 168              $grp = (int) $this->get_data( $handle, 'group' );
 169  
 170          if ( false !== $group && $grp > $group )
 171              $grp = $group;
 172  
 173          return parent::set_group( $handle, $recursion, $grp );
 174      }
 175  
 176  	function all_deps( $handles, $recursion = false, $group = false ) {
 177          $r = parent::all_deps( $handles, $recursion );
 178          if ( !$recursion )
 179              $this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
 180          return $r;
 181      }
 182  
 183  	function do_head_items() {
 184          $this->do_items(false, 0);
 185          return $this->done;
 186      }
 187  
 188  	function do_footer_items() {
 189          $this->do_items(false, 1);
 190          return $this->done;
 191      }
 192  
 193  	function in_default_dir($src) {
 194          if ( ! $this->default_dirs )
 195              return true;
 196  
 197          if ( 0 === strpos( $src, '/wp-includes/js/l10n' ) )
 198              return false;
 199  
 200          foreach ( (array) $this->default_dirs as $test ) {
 201              if ( 0 === strpos($src, $test) )
 202                  return true;
 203          }
 204          return false;
 205      }
 206  
 207  	function reset() {
 208          $this->do_concat = false;
 209          $this->print_code = '';
 210          $this->concat = '';
 211          $this->concat_version = '';
 212          $this->print_html = '';
 213          $this->ext_version = '';
 214          $this->ext_handles = '';
 215      }
 216  }