Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like CMB2_hookup often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use CMB2_hookup, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class CMB2_hookup extends CMB2_Hookup_Base { |
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| 15 | |||
| 16 | /** |
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| 17 | * Array of all hooks done (to be run once) |
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| 18 | * @var array |
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| 19 | * @since 2.0.0 |
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| 20 | */ |
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| 21 | protected static $hooks_completed = array(); |
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| 22 | |||
| 23 | /** |
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| 24 | * Only allow JS registration once |
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| 25 | * @var bool |
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| 26 | * @since 2.0.7 |
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| 27 | */ |
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| 28 | protected static $js_registration_done = false; |
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| 29 | |||
| 30 | /** |
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| 31 | * Only allow CSS registration once |
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| 32 | * @var bool |
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| 33 | * @since 2.0.7 |
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| 34 | */ |
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| 35 | protected static $css_registration_done = false; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var CMB2 object |
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| 39 | * @since 2.0.2 |
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| 40 | */ |
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| 41 | protected $cmb; |
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| 42 | |||
| 43 | /** |
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| 44 | * CMB taxonomies array for term meta |
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| 45 | * @var array |
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| 46 | * @since 2.2.0 |
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| 47 | */ |
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| 48 | protected $taxonomies = array(); |
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| 49 | |||
| 50 | /** |
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| 51 | * Custom field columns. |
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| 52 | * @var array |
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| 53 | * @since 2.2.2 |
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| 54 | */ |
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| 55 | protected $columns = array(); |
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| 56 | |||
| 57 | /** |
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| 58 | * Constructor |
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| 59 | * @since 2.0.0 |
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| 60 | * @param CMB2 $cmb The CMB2 object to hookup |
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| 61 | */ |
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| 62 | public function __construct( CMB2 $cmb ) { |
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| 83 | |||
| 84 | public function universal_hooks() { |
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| 97 | |||
| 98 | public function post_hooks() { |
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| 111 | |||
| 112 | public function comment_hooks() { |
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| 121 | |||
| 122 | public function user_hooks() { |
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| 138 | |||
| 139 | public function term_hooks() { |
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| 178 | |||
| 179 | /** |
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| 180 | * Registers styles for CMB2 |
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| 181 | * @since 2.0.7 |
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| 182 | */ |
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| 183 | protected static function register_styles() { |
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| 200 | 1 | ||
| 201 | 1 | /** |
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| 202 | * Registers scripts for CMB2 |
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| 203 | * @since 2.0.7 |
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| 204 | */ |
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| 205 | protected static function register_js() { |
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| 215 | 1 | ||
| 216 | 1 | /** |
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| 217 | * Registers scripts and styles for CMB2 |
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| 218 | * @since 1.0.0 |
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| 219 | */ |
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| 220 | public static function register_scripts() { |
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| 224 | |||
| 225 | /** |
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| 226 | * Enqueues scripts and styles for CMB2 in admin_head. |
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| 227 | * @since 1.0.0 |
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| 228 | */ |
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| 229 | public function do_scripts( $hook ) { |
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| 253 | |||
| 254 | /** |
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| 255 | * Register the CMB2 field column headers. |
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| 256 | * @since 2.2.2 |
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| 257 | */ |
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| 258 | public function register_column_headers( $columns ) { |
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| 285 | |||
| 286 | /** |
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| 287 | * The CMB2 field column display output. |
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| 288 | * @since 2.2.2 |
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| 289 | */ |
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| 290 | public function column_display( $column_name, $object_id ) { |
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| 302 | |||
| 303 | /** |
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| 304 | * Returns the column display. |
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| 305 | * @since 2.2.2 |
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| 306 | */ |
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| 307 | public function return_column_display( $empty, $custom_column, $object_id ) { |
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| 314 | |||
| 315 | /** |
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| 316 | * Add metaboxes (to 'post' or 'comment' object types) |
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| 317 | * @since 1.0.0 |
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| 318 | */ |
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| 319 | public function add_metaboxes() { |
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| 346 | |||
| 347 | /** |
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| 348 | * Add 'closed' class to metabox |
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| 349 | * @since 2.0.0 |
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| 350 | * @param array $classes Array of classes |
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| 351 | * @return array Modified array of classes |
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| 352 | */ |
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| 353 | public function close_metabox_class( $classes ) { |
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| 357 | |||
| 358 | /** |
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| 359 | * Display metaboxes for a post or comment object |
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| 360 | * @since 1.0.0 |
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| 361 | */ |
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| 362 | public function metabox_callback() { |
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| 366 | |||
| 367 | /** |
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| 368 | * Display metaboxes for new user page |
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| 369 | * @since 1.0.0 |
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| 370 | */ |
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| 371 | public function user_new_metabox( $section ) { |
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| 378 | |||
| 379 | /** |
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| 380 | * Display metaboxes for a user object |
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| 381 | * @since 1.0.0 |
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| 382 | */ |
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| 383 | public function user_metabox() { |
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| 386 | |||
| 387 | /** |
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| 388 | * Display metaboxes for a taxonomy term object |
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| 389 | * @since 2.2.0 |
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| 390 | */ |
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| 391 | public function term_metabox() { |
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| 394 | |||
| 395 | /** |
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| 396 | * Display metaboxes for an object type |
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| 397 | * @since 2.2.0 |
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| 398 | * @param string $type Object type |
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| 399 | * @return void |
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| 400 | */ |
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| 401 | public function show_form_for_type( $type ) { |
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| 419 | |||
| 420 | /** |
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| 421 | * Determines if metabox should be shown in current context |
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| 422 | * @since 2.0.0 |
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| 423 | * @return bool Whether metabox should be added/shown |
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| 424 | */ |
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| 425 | public function show_on() { |
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| 440 | |||
| 441 | /** |
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| 442 | * Get the CMB priority property set to numeric hook priority. |
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| 443 | * @since 2.2.0 |
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| 444 | * @param integer $default Default display hook priority. |
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| 445 | * @return integer Hook priority. |
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| 446 | */ |
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| 447 | public function get_priority( $default = 10 ) { |
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| 469 | |||
| 470 | /** |
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| 471 | * Save data from post metabox |
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| 472 | * @since 1.0.0 |
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| 473 | * @param int $post_id Post ID |
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| 474 | * @param mixed $post Post object |
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| 475 | * @return null |
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| 476 | */ |
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| 477 | public function save_post( $post_id, $post = false ) { |
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| 496 | |||
| 497 | /** |
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| 498 | * Save data from comment metabox |
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| 499 | * @since 2.0.9 |
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| 500 | * @param int $comment_id Comment ID |
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| 501 | * @return null |
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| 502 | */ |
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| 503 | public function save_comment( $comment_id ) { |
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| 511 | |||
| 512 | /** |
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| 513 | * Save data from user fields |
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| 514 | * @since 1.0.x |
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| 515 | * @param int $user_id User ID |
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| 516 | * @return null |
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| 517 | */ |
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| 518 | public function save_user( $user_id ) { |
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| 524 | |||
| 525 | /** |
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| 526 | * Save data from term fields |
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| 527 | * @since 2.2.0 |
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| 528 | * @param int $term_id Term ID |
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| 529 | * @param int $tt_id Term Taxonomy ID |
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| 530 | * @param string $taxonomy Taxonomy |
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| 531 | * @return null |
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| 532 | */ |
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| 533 | public function save_term( $term_id, $tt_id, $taxonomy = '' ) { |
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| 541 | |||
| 542 | /** |
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| 543 | * Delete term meta when a term is deleted. |
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| 544 | * @since 2.2.0 |
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| 545 | * @param int $term_id Term ID |
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| 546 | * @param int $tt_id Term Taxonomy ID |
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| 547 | * @param string $taxonomy Taxonomy |
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| 548 | * @return null |
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| 549 | */ |
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| 550 | public function delete_term( $term_id, $tt_id, $taxonomy = '' ) { |
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| 560 | |||
| 561 | /** |
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| 562 | * Determines if the current object is able to be saved |
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| 563 | * @since 2.0.9 |
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| 564 | * @param string $type Current post_type or comment_type |
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| 565 | * @return bool Whether object can be saved |
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| 566 | */ |
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| 567 | public function can_save( $type = '' ) { |
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| 579 | |||
| 580 | /** |
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| 581 | * Determine if taxonomy of term being modified is cmb2-editable. |
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| 582 | * @since 2.2.0 |
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| 583 | * @param string $taxonomy Taxonomy of term being modified. |
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| 584 | * @return bool Whether taxonomy is editable. |
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| 585 | */ |
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| 586 | public function taxonomy_can_save( $taxonomy ) { |
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| 599 | |||
| 600 | /** |
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| 601 | * Enqueues the 'cmb2-display-styles' if the conditions match (has columns, on the right page, etc). |
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| 602 | * @since 2.2.2.1 |
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| 603 | */ |
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| 604 | protected function maybe_enqueue_column_display_styles() { |
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| 615 | |||
| 616 | /** |
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| 617 | * Includes CMB2 styles |
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| 618 | * @since 2.0.0 |
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| 619 | */ |
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| 620 | public static function enqueue_cmb_css( $handle = 'cmb2-styles' ) { |
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| 633 | |||
| 634 | /** |
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| 635 | * Includes CMB2 JS |
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| 636 | * @since 2.0.0 |
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| 637 | */ |
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| 638 | public static function enqueue_cmb_js() { |
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| 646 | 1 | ||
| 647 | } |
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| 648 |
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.