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 | * CMB taxonomies array for term meta |
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| 39 | * @var array |
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| 40 | * @since 2.2.0 |
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| 41 | */ |
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| 42 | protected $taxonomies = array(); |
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| 43 | |||
| 44 | /** |
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| 45 | * Constructor |
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| 46 | * @since 2.0.0 |
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| 47 | * @param CMB2 $cmb The CMB2 object to hookup |
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| 48 | */ |
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| 49 | public function __construct( CMB2 $cmb ) { |
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| 50 | $this->cmb = $cmb; |
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| 51 | $this->object_type = $this->cmb->mb_object_type(); |
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| 52 | } |
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| 53 | |||
| 54 | public function universal_hooks() { |
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| 55 | // Handle oembed Ajax |
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| 56 | $this->once( 'wp_ajax_cmb2_oembed_handler', array( cmb2_ajax(), 'oembed_handler' ) ); |
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| 57 | $this->once( 'wp_ajax_nopriv_cmb2_oembed_handler', array( cmb2_ajax(), 'oembed_handler' ) ); |
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| 58 | |||
| 59 | foreach ( get_class_methods( 'CMB2_Show_Filters' ) as $filter ) { |
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| 60 | add_filter( 'cmb2_show_on', array( 'CMB2_Show_Filters', $filter ), 10, 3 ); |
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| 61 | } |
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| 62 | |||
| 63 | if ( is_admin() ) { |
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| 64 | // register our scripts and styles for cmb |
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| 65 | $this->once( 'admin_enqueue_scripts', array( __CLASS__, 'register_scripts' ), 8 ); |
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| 66 | |||
| 67 | switch ( $this->object_type ) { |
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| 68 | case 'post': |
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| 69 | return $this->post_hooks(); |
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| 70 | case 'comment': |
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| 71 | return $this->comment_hooks(); |
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| 72 | case 'user': |
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| 73 | return $this->user_hooks(); |
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| 74 | case 'term': |
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| 75 | return $this->term_hooks(); |
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| 76 | } |
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| 77 | |||
| 78 | } |
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| 79 | } |
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| 80 | |||
| 81 | public function post_hooks() { |
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| 82 | add_action( 'add_meta_boxes', array( $this, 'add_metaboxes' ) ); |
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| 83 | add_action( 'add_attachment', array( $this, 'save_post' ) ); |
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| 84 | add_action( 'edit_attachment', array( $this, 'save_post' ) ); |
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| 85 | add_action( 'save_post', array( $this, 'save_post' ), 10, 2 ); |
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| 86 | |||
| 87 | $this->once( 'admin_enqueue_scripts', array( $this, 'do_scripts' ) ); |
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| 88 | } |
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| 89 | |||
| 90 | public function comment_hooks() { |
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| 91 | add_action( 'add_meta_boxes_comment', array( $this, 'add_metaboxes' ) ); |
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| 92 | add_action( 'edit_comment', array( $this, 'save_comment' ) ); |
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| 93 | |||
| 94 | $this->once( 'admin_enqueue_scripts', array( $this, 'do_scripts' ) ); |
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| 95 | } |
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| 96 | |||
| 97 | public function user_hooks() { |
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| 98 | $priority = $this->cmb->prop( 'priority' ); |
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| 99 | |||
| 100 | if ( ! is_numeric( $priority ) ) { |
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| 101 | switch ( $priority ) { |
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| 102 | |||
| 103 | case 'high': |
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| 104 | $priority = 5; |
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| 105 | break; |
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| 106 | |||
| 107 | case 'low': |
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| 108 | $priority = 20; |
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| 109 | break; |
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| 110 | 1 | ||
| 111 | 1 | default: |
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| 112 | 1 | $priority = 10; |
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| 113 | break; |
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| 114 | } |
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| 115 | } |
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| 116 | 1 | ||
| 117 | add_action( 'show_user_profile', array( $this, 'user_metabox' ), $priority ); |
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| 118 | 1 | add_action( 'edit_user_profile', array( $this, 'user_metabox' ), $priority ); |
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| 119 | add_action( 'user_new_form', array( $this, 'user_new_metabox' ), $priority ); |
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| 120 | 1 | ||
| 121 | 1 | add_action( 'personal_options_update', array( $this, 'save_user' ) ); |
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| 122 | 1 | add_action( 'edit_user_profile_update', array( $this, 'save_user' ) ); |
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| 123 | 1 | add_action( 'user_register', array( $this, 'save_user' ) ); |
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| 124 | 1 | } |
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| 125 | 1 | ||
| 126 | 1 | public function term_hooks() { |
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| 127 | 1 | if ( ! function_exists( 'get_term_meta' ) ) { |
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| 128 | 1 | wp_die( __( 'Term Metadata is a WordPress > 4.4 feature. Please upgrade your WordPress install.', 'cmb2' ) ); |
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| 129 | } |
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| 130 | 1 | ||
| 131 | if ( ! $this->cmb->prop( 'taxonomies' ) ) { |
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| 132 | wp_die( __( 'Term metaboxes configuration requires a \'taxonomies\' parameter', 'cmb2' ) ); |
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| 133 | 1 | } |
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| 134 | |||
| 135 | 1 | $this->taxonomies = (array) $this->cmb->prop( 'taxonomies' ); |
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| 136 | $show_on_term_add = $this->cmb->prop( 'new_term_section' ); |
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| 137 | 1 | ||
| 138 | foreach ( $this->taxonomies as $taxonomy ) { |
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| 139 | 1 | // Display our form data |
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| 140 | 1 | add_action( "{$taxonomy}_edit_form", array( $this, 'term_metabox' ), 8, 2 ); |
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| 141 | 1 | ||
| 142 | 1 | $show_on_add = is_array( $show_on_term_add ) |
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| 143 | 1 | ? in_array( $taxonomy, $show_on_term_add ) |
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| 144 | 1 | : (bool) $show_on_term_add; |
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| 145 | |||
| 146 | 1 | $show_on_add = apply_filters( "cmb2_show_on_term_add_form_{$this->cmb->cmb_id}", $show_on_add, $this->cmb ); |
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| 147 | |||
| 148 | 1 | // Display form in add-new section (unless specified not to) |
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| 149 | 1 | if ( $show_on_add ) { |
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| 150 | 1 | add_action( "{$taxonomy}_add_form_fields", array( $this, 'term_metabox' ), 8, 2 ); |
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| 151 | 1 | } |
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| 152 | 1 | ||
| 153 | 1 | } |
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| 154 | 1 | ||
| 155 | 1 | add_action( 'created_term', array( $this, 'save_term' ), 10, 3 ); |
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| 156 | 1 | add_action( 'edited_terms', array( $this, 'save_term' ), 10, 2 ); |
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| 157 | 1 | ||
| 158 | 1 | add_action( 'delete_term', array( $this, 'delete_term' ), 10, 3 ); |
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| 159 | 1 | } |
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| 160 | 1 | ||
| 161 | 1 | /** |
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| 162 | * Registers styles for CMB2 |
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| 163 | 1 | * @since 2.0.7 |
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| 164 | 1 | */ |
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| 165 | 1 | protected static function register_styles() { |
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| 166 | 1 | if ( self::$css_registration_done ) { |
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| 167 | return; |
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| 168 | 1 | } |
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| 169 | 1 | ||
| 170 | // Only use minified files if SCRIPT_DEBUG is off |
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| 171 | 1 | $min = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min'; |
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| 172 | 1 | $front = is_admin() ? '' : '-front'; |
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| 173 | 1 | $rtl = is_rtl() ? '-rtl' : ''; |
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| 174 | 1 | ||
| 175 | 1 | // Filter required styles and register stylesheet |
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| 176 | 1 | $styles = apply_filters( 'cmb2_style_dependencies', array() ); |
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| 177 | 1 | wp_register_style( 'cmb2-styles', cmb2_utils()->url( "css/cmb2{$front}{$rtl}{$min}.css" ), $styles ); |
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| 178 | 1 | ||
| 179 | self::$css_registration_done = true; |
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| 180 | 1 | } |
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| 181 | |||
| 182 | 1 | /** |
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| 183 | 1 | * Registers scripts for CMB2 |
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| 184 | * @since 2.0.7 |
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| 185 | */ |
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| 186 | protected static function register_js() { |
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| 187 | if ( self::$js_registration_done ) { |
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| 188 | return; |
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| 189 | } |
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| 190 | |||
| 191 | $hook = is_admin() ? 'admin_footer' : 'wp_footer'; |
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| 192 | add_action( $hook, array( 'CMB2_JS', 'enqueue' ), 8 ); |
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| 193 | |||
| 194 | self::$js_registration_done = true; |
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| 195 | } |
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| 196 | |||
| 197 | /** |
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| 198 | * Registers scripts and styles for CMB2 |
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| 199 | * @since 1.0.0 |
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| 200 | */ |
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| 201 | public static function register_scripts() { |
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| 202 | self::register_styles(); |
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| 203 | self::register_js(); |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * Enqueues scripts and styles for CMB2 |
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| 208 | * @since 1.0.0 |
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| 209 | */ |
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| 210 | public function do_scripts( $hook ) { |
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| 211 | // only enqueue our scripts/styles on the proper pages |
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| 212 | if ( in_array( $hook, array( 'post.php', 'post-new.php', 'page-new.php', 'page.php', 'comment.php' ), true ) ) { |
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| 213 | if ( $this->cmb->prop( 'cmb_styles' ) ) { |
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| 214 | self::enqueue_cmb_css(); |
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| 215 | } |
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| 216 | if ( $this->cmb->prop( 'enqueue_js' ) ) { |
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| 217 | self::enqueue_cmb_js(); |
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| 218 | } |
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| 219 | } |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * Add metaboxes (to 'post' or 'comment' object types) |
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| 224 | * @since 1.0.0 |
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| 225 | */ |
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| 226 | public function add_metaboxes() { |
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| 227 | |||
| 228 | if ( ! $this->show_on() ) { |
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| 229 | return; |
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| 230 | } |
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| 231 | |||
| 232 | foreach ( $this->cmb->prop( 'object_types' ) as $post_type ) { |
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| 233 | /** |
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| 234 | * To keep from registering an actual post-screen metabox, |
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| 235 | * omit the 'title' attribute from the metabox registration array. |
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| 236 | * |
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| 237 | * (WordPress will not display metaboxes without titles anyway) |
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| 238 | * |
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| 239 | * This is a good solution if you want to output your metaboxes |
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| 240 | * Somewhere else in the post-screen |
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| 241 | */ |
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| 242 | if ( $this->cmb->prop( 'title' ) ) { |
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| 243 | |||
| 244 | if ( $this->cmb->prop( 'closed' ) ) { |
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| 245 | add_filter( "postbox_classes_{$post_type}_{$this->cmb->cmb_id}", array( $this, 'close_metabox_class' ) ); |
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| 246 | } |
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| 247 | |||
| 248 | add_meta_box( $this->cmb->cmb_id, $this->cmb->prop( 'title' ), array( $this, 'metabox_callback' ), $post_type, $this->cmb->prop( 'context' ), $this->cmb->prop( 'priority' ) ); |
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| 249 | } |
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| 250 | } |
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| 251 | } |
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| 252 | |||
| 253 | /** |
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| 254 | * Add 'closed' class to metabox |
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| 255 | * @since 2.0.0 |
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| 256 | * @param array $classes Array of classes |
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| 257 | * @return array Modified array of classes |
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| 258 | */ |
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| 259 | public function close_metabox_class( $classes ) { |
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| 260 | $classes[] = 'closed'; |
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| 261 | return $classes; |
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| 262 | } |
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| 263 | |||
| 264 | /** |
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| 265 | * Display metaboxes for a post or comment object |
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| 266 | * @since 1.0.0 |
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| 267 | */ |
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| 268 | public function metabox_callback() { |
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| 269 | $object_id = 'comment' == $this->object_type ? get_comment_ID() : get_the_ID(); |
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| 270 | $this->cmb->show_form( $object_id, $this->object_type ); |
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| 271 | } |
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| 272 | |||
| 273 | /** |
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| 274 | * Display metaboxes for new user page |
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| 275 | * @since 1.0.0 |
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| 276 | */ |
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| 277 | public function user_new_metabox( $section ) { |
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| 284 | |||
| 285 | /** |
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| 286 | * Display metaboxes for a user object |
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| 287 | * @since 1.0.0 |
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| 288 | */ |
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| 289 | public function user_metabox() { |
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| 292 | |||
| 293 | /** |
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| 294 | * Display metaboxes for a taxonomy term object |
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| 295 | * @since 2.2.0 |
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| 296 | */ |
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| 297 | public function term_metabox() { |
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| 298 | $this->show_form_for_type( 'term' ); |
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| 299 | } |
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| 300 | |||
| 301 | /** |
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| 302 | * Display metaboxes for an object type |
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| 303 | * @since 2.2.0 |
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| 304 | * @param string $type Object type |
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| 305 | * @return void |
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| 306 | */ |
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| 307 | public function show_form_for_type( $type ) { |
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| 308 | if ( $type != $this->cmb->mb_object_type() ) { |
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| 309 | return; |
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| 310 | } |
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| 311 | |||
| 312 | if ( ! $this->show_on() ) { |
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| 313 | return; |
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| 314 | } |
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| 315 | |||
| 316 | if ( $this->cmb->prop( 'cmb_styles' ) ) { |
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| 317 | self::enqueue_cmb_css(); |
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| 318 | } |
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| 319 | if ( $this->cmb->prop( 'enqueue_js' ) ) { |
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| 320 | self::enqueue_cmb_js(); |
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| 321 | } |
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| 322 | |||
| 323 | $this->cmb->show_form( 0, $type ); |
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| 324 | } |
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| 325 | |||
| 326 | /** |
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| 327 | * Determines if metabox should be shown in current context |
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| 328 | * @since 2.0.0 |
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| 329 | * @return bool Whether metabox should be added/shown |
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| 330 | */ |
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| 331 | public function show_on() { |
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| 346 | |||
| 347 | /** |
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| 348 | * Save data from post metabox |
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| 349 | * @since 1.0.0 |
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| 350 | 1 | * @param int $post_id Post ID |
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| 351 | 1 | * @param mixed $post Post object |
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| 352 | * @return null |
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| 353 | 1 | */ |
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| 354 | public function save_post( $post_id, $post = false ) { |
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| 355 | |||
| 356 | $post_type = $post ? $post->post_type : get_post_type( $post_id ); |
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| 357 | |||
| 358 | $do_not_pass_go = ( |
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| 359 | ! $this->can_save( $post_type ) |
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| 360 | 1 | // check user editing permissions |
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| 361 | 1 | || ( 'page' == $post_type && ! current_user_can( 'edit_page', $post_id ) ) |
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| 373 | |||
| 374 | /** |
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| 375 | * Save data from comment metabox |
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| 376 | * @since 2.0.9 |
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| 377 | * @param int $comment_id Comment ID |
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| 378 | * @return null |
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| 379 | */ |
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| 380 | public function save_comment( $comment_id ) { |
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| 388 | |||
| 389 | /** |
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| 390 | * Save data from user fields |
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| 391 | * @since 1.0.x |
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| 392 | * @param int $user_id User ID |
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| 393 | * @return null |
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| 394 | */ |
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| 395 | public function save_user( $user_id ) { |
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| 401 | |||
| 402 | /** |
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| 403 | * Save data from term fields |
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| 404 | * @since 1.0.x |
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| 405 | * @param int $term_id Term ID |
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| 406 | * @param int $tt_id Term Taxonomy ID |
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| 407 | * @param string $taxonomy Taxonomy |
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| 408 | * @return null |
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| 409 | */ |
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| 410 | public function save_term( $term_id, $tt_id, $taxonomy = '' ) { |
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| 418 | |||
| 419 | /** |
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| 420 | * Delete term meta when a term is deleted. |
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| 421 | * @since 1.0.x |
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| 422 | * @param int $term_id Term ID |
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| 423 | * @param int $tt_id Term Taxonomy ID |
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| 424 | * @param string $taxonomy Taxonomy |
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| 425 | * @return null |
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| 426 | */ |
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| 427 | public function delete_term( $term_id, $tt_id, $taxonomy = '' ) { |
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| 437 | |||
| 438 | /** |
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| 439 | * Determines if the current object is able to be saved |
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| 440 | * @since 2.0.9 |
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| 441 | * @param string $type Current post_type or comment_type |
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| 442 | * @return bool Whether object can be saved |
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| 443 | */ |
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| 444 | public function can_save( $type = '' ) { |
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| 456 | |||
| 457 | /** |
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| 458 | * Determine if taxonomy of term being modified is cmb2-editable. |
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| 459 | * @since 2.2.0 |
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| 460 | * @param string $taxonomy Taxonomy of term being modified. |
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| 461 | * @return bool Whether taxonomy is editable. |
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| 462 | */ |
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| 463 | public function taxonomy_can_save( $taxonomy ) { |
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| 478 | |||
| 479 | /** |
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| 480 | * Includes CMB2 styles |
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| 481 | * @since 2.0.0 |
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| 482 | */ |
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| 483 | public static function enqueue_cmb_css() { |
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| 491 | |||
| 492 | /** |
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| 493 | * Includes CMB2 JS |
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| 494 | * @since 2.0.0 |
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| 495 | */ |
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| 496 | public static function enqueue_cmb_js() { |
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| 504 | |||
| 505 | } |
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| 506 |
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.