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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. public $base_url; // Full URL with trailing slash
  21. public $content_url;
  22. public $default_version;
  23. public $in_footer = array();
  24. public $concat = '';
  25. public $concat_version = '';
  26. public $do_concat = false;
  27. public $print_html = '';
  28. public $print_code = '';
  29. public $ext_handles = '';
  30. public $ext_version = '';
  31. public $default_dirs;
  32.  
  33. public function __construct() {
  34. $this->init();
  35. add_action( 'init', array( $this, 'init' ), 0 );
  36. }
  37.  
  38. public function init() {
  39. /**
  40. * Fires when the WP_Scripts instance is initialized.
  41. *
  42. * @since 2.6.0
  43. *
  44. * @param WP_Scripts &$this WP_Scripts instance, passed by reference.
  45. */
  46. do_action_ref_array( 'wp_default_scripts', array(&$this) );
  47. }
  48.  
  49. /**
  50. * Prints scripts.
  51. *
  52. * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies.
  53. *
  54. * @param mixed $handles Optional. Scripts to be printed. (void) prints queue, (string) prints
  55. * that script, (array of strings) prints those scripts. Default false.
  56. * @param int $group Optional. If scripts were queued in groups prints this group number.
  57. * Default false.
  58. * @return array Scripts that have been printed.
  59. */
  60. public function print_scripts( $handles = false, $group = false ) {
  61. return $this->do_items( $handles, $group );
  62. }
  63.  
  64. // Deprecated since 3.3, see print_extra_script()
  65. public function print_scripts_l10n( $handle, $echo = true ) {
  66. _deprecated_function( __FUNCTION__, '3.3', 'print_extra_script()' );
  67. return $this->print_extra_script( $handle, $echo );
  68. }
  69.  
  70. public function print_extra_script( $handle, $echo = true ) {
  71. if ( !$output = $this->get_data( $handle, 'data' ) )
  72. return;
  73.  
  74. if ( !$echo )
  75. return $output;
  76.  
  77. echo "<script type='text/javascript'>\n"; // CDATA and type='text/javascript' is not needed for HTML 5
  78. echo "/* <![CDATA[ */\n";
  79. echo "$output\n";
  80. echo "/* ]]> */\n";
  81. echo "</script>\n";
  82.  
  83. return true;
  84. }
  85.  
  86. public function do_item( $handle, $group = false ) {
  87. if ( !parent::do_item($handle) )
  88. return false;
  89.  
  90. if ( 0 === $group && $this->groups[$handle] > 0 ) {
  91. $this->in_footer[] = $handle;
  92. return false;
  93. }
  94.  
  95. if ( false === $group && in_array($handle, $this->in_footer, true) )
  96. $this->in_footer = array_diff( $this->in_footer, (array) $handle );
  97.  
  98. $obj = $this->registered[$handle];
  99.  
  100. if ( null === $obj->ver ) {
  101. $ver = '';
  102. } else {
  103. $ver = $obj->ver ? $obj->ver : $this->default_version;
  104. }
  105.  
  106. if ( isset($this->args[$handle]) )
  107. $ver = $ver ? $ver . '&amp;' . $this->args[$handle] : $this->args[$handle];
  108.  
  109. $src = $obj->src;
  110. $cond_before = $cond_after = '';
  111. $conditional = isset( $obj->extra['conditional'] ) ? $obj->extra['conditional'] : '';
  112.  
  113. if ( $conditional ) {
  114. $cond_before = "<!--[if {$conditional}]>\n";
  115. $cond_after = "<![endif]-->\n";
  116. }
  117.  
  118. if ( $this->do_concat ) {
  119. /**
  120. * Filter the script loader source.
  121. *
  122. * @since 2.2.0
  123. *
  124. * @param string $src Script loader source path.
  125. * @param string $handle Script handle.
  126. */
  127. $srce = apply_filters( 'script_loader_src', $src, $handle );
  128. if ( $this->in_default_dir( $srce ) && ! $conditional ) {
  129. $this->print_code .= $this->print_extra_script( $handle, false );
  130. $this->concat .= "$handle,";
  131. $this->concat_version .= "$handle$ver";
  132. return true;
  133. } else {
  134. $this->ext_handles .= "$handle,";
  135. $this->ext_version .= "$handle$ver";
  136. }
  137. }
  138.  
  139. $has_conditional_data = $conditional && $this->get_data( $handle, 'data' );
  140.  
  141. if ( $has_conditional_data ) {
  142. echo $cond_before;
  143. }
  144.  
  145. $this->print_extra_script( $handle );
  146.  
  147. if ( $has_conditional_data ) {
  148. echo $cond_after;
  149. }
  150.  
  151. if ( ! preg_match( '|^(https?:)?//|', $src ) && ! ( $this->content_url && 0 === strpos( $src, $this->content_url ) ) ) {
  152. $src = $this->base_url . $src;
  153. }
  154.  
  155. if ( ! empty( $ver ) )
  156. $src = add_query_arg( 'ver', $ver, $src );
  157.  
  158. /** This filter is documented in wp-includes/class.wp-scripts.php */
  159. $src = esc_url( apply_filters( 'script_loader_src', $src, $handle ) );
  160.  
  161. if ( ! $src )
  162. return true;
  163.  
  164. $tag = "{$cond_before}<script type='text/javascript' src='$src'></script>\n{$cond_after}";
  165.  
  166. /**
  167. * Filter the HTML script tag of an enqueued script.
  168. *
  169. * @since 4.1.0
  170. *
  171. * @param string $tag The `<script>` tag for the enqueued script.
  172. * @param string $handle The script's registered handle.
  173. * @param string $src The script's source URL.
  174. */
  175. $tag = apply_filters( 'script_loader_tag', $tag, $handle, $src );
  176.  
  177. if ( $this->do_concat ) {
  178. $this->print_html .= $tag;
  179. } else {
  180. echo $tag;
  181. }
  182.  
  183. return true;
  184. }
  185.  
  186. /**
  187. * Localizes a script
  188. *
  189. * Localizes only if the script has already been added
  190. */
  191. public function localize( $handle, $object_name, $l10n ) {
  192. if ( $handle === 'jquery' )
  193. $handle = 'jquery-core';
  194.  
  195. if ( is_array($l10n) && isset($l10n['l10n_print_after']) ) { // back compat, preserve the code in 'l10n_print_after' if present
  196. $after = $l10n['l10n_print_after'];
  197. unset($l10n['l10n_print_after']);
  198. }
  199.  
  200. foreach ( (array) $l10n as $key => $value ) {
  201. if ( !is_scalar($value) )
  202. continue;
  203.  
  204. $l10n[$key] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8');
  205. }
  206.  
  207. $script = "var $object_name = " . wp_json_encode( $l10n ) . ';';
  208.  
  209. if ( !empty($after) )
  210. $script .= "\n$after;";
  211.  
  212. $data = $this->get_data( $handle, 'data' );
  213.  
  214. if ( !empty( $data ) )
  215. $script = "$data\n$script";
  216.  
  217. return $this->add_data( $handle, 'data', $script );
  218. }
  219.  
  220. public function set_group( $handle, $recursion, $group = false ) {
  221.  
  222. if ( $this->registered[$handle]->args === 1 )
  223. $grp = 1;
  224. else
  225. $grp = (int) $this->get_data( $handle, 'group' );
  226.  
  227. if ( false !== $group && $grp > $group )
  228. $grp = $group;
  229.  
  230. return parent::set_group( $handle, $recursion, $grp );
  231. }
  232.  
  233. public function all_deps( $handles, $recursion = false, $group = false ) {
  234. $r = parent::all_deps( $handles, $recursion );
  235. if ( ! $recursion ) {
  236. /**
  237. * Filter the list of script dependencies left to print.
  238. *
  239. * @since 2.3.0
  240. *
  241. * @param array $to_do An array of script dependencies.
  242. */
  243. $this->to_do = apply_filters( 'print_scripts_array', $this->to_do );
  244. }
  245. return $r;
  246. }
  247.  
  248. public function do_head_items() {
  249. $this->do_items(false, 0);
  250. return $this->done;
  251. }
  252.  
  253. public function do_footer_items() {
  254. $this->do_items(false, 1);
  255. return $this->done;
  256. }
  257.  
  258. public function in_default_dir( $src ) {
  259. if ( ! $this->default_dirs ) {
  260. return true;
  261. }
  262.  
  263. if ( 0 === strpos( $src, '/' . WPINC . '/js/l10n' ) ) {
  264. return false;
  265. }
  266.  
  267. foreach ( (array) $this->default_dirs as $test ) {
  268. if ( 0 === strpos( $src, $test ) ) {
  269. return true;
  270. }
  271. }
  272. return false;
  273. }
  274.  
  275. public function reset() {
  276. $this->do_concat = false;
  277. $this->print_code = '';
  278. $this->concat = '';
  279. $this->concat_version = '';
  280. $this->print_html = '';
  281. $this->ext_version = '';
  282. $this->ext_handles = '';
  283. }
  284. }
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