WebDevStudios /
CMB2
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 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, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 17 | class CMB2 extends CMB2_Base { |
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| 18 | |||
| 19 | /** |
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| 20 | * The object properties name. |
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| 21 | * @var string |
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| 22 | * @since 2.2.3 |
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| 23 | */ |
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| 24 | protected $properties_name = 'meta_box'; |
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| 25 | |||
| 26 | /** |
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| 27 | * Metabox Config array |
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| 28 | * @var array |
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| 29 | * @since 0.9.0 |
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| 30 | */ |
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| 31 | protected $meta_box = array(); |
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| 32 | |||
| 33 | /** |
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| 34 | * Type of object registered for metabox. (e.g., post, user, or comment) |
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| 35 | * @var string |
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| 36 | * @since 1.0.0 |
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| 37 | */ |
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| 38 | protected $mb_object_type = null; |
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| 39 | |||
| 40 | /** |
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| 41 | * List of fields that are changed/updated on save |
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| 42 | * @var array |
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| 43 | * @since 1.1.0 |
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| 44 | */ |
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| 45 | protected $updated = array(); |
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| 46 | |||
| 47 | /** |
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| 48 | * Metabox Defaults |
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| 49 | * @var array |
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| 50 | * @since 1.0.1 |
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| 51 | */ |
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| 52 | protected $mb_defaults = array( |
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| 53 | 'id' => '', |
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| 54 | 'title' => '', |
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| 55 | // Post type slug, or 'user', 'term', 'comment', or 'options-page' |
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| 56 | 'object_types' => array(), |
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| 57 | /* |
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| 58 | * The context within the screen where the boxes should display. Available contexts vary |
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| 59 | * from screen to screen. Post edit screen contexts include 'normal', 'side', and 'advanced'. |
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| 60 | * |
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| 61 | * For placement in locations outside of a metabox, other options include: |
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| 62 | * 'form_top', 'before_permalink', 'after_title', 'after_editor' |
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| 63 | * |
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| 64 | * Comments screen contexts include 'normal' and 'side'. Default is 'normal'. |
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| 65 | */ |
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| 66 | 'context' => 'normal', |
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| 67 | 'priority' => 'high', |
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| 68 | 'show_names' => true, // Show field names on the left |
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| 69 | 'show_on_cb' => null, // Callback to determine if metabox should display. |
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| 70 | 'show_on' => array(), // Post IDs or page templates to display this metabox. overrides 'show_on_cb' |
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| 71 | 'cmb_styles' => true, // Include CMB2 stylesheet |
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| 72 | 'enqueue_js' => true, // Include CMB2 JS |
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| 73 | 'fields' => array(), |
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| 74 | 'hookup' => true, |
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| 75 | 'save_fields' => true, // Will not save during hookup if false |
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| 76 | 'closed' => false, // Default to metabox being closed? |
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| 77 | 'taxonomies' => array(), |
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| 78 | 'new_user_section' => 'add-new-user', // or 'add-existing-user' |
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| 79 | 'new_term_section' => true, |
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| 80 | 'show_in_rest' => false, |
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| 81 | ); |
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| 82 | |||
| 83 | /** |
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| 84 | * Metabox field objects |
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| 85 | * @var array |
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| 86 | * @since 2.0.3 |
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| 87 | */ |
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| 88 | protected $fields = array(); |
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| 89 | |||
| 90 | /** |
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| 91 | * An array of hidden fields to output at the end of the form |
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| 92 | * @var array |
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| 93 | * @since 2.0.0 |
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| 94 | */ |
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| 95 | protected $hidden_fields = array(); |
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| 96 | |||
| 97 | /** |
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| 98 | * Array of key => value data for saving. Likely $_POST data. |
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| 99 | * @var string |
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| 100 | * @since 2.0.0 |
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| 101 | */ |
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| 102 | protected $generated_nonce = ''; |
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| 103 | |||
| 104 | /** |
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| 105 | * Whether there are fields to be shown in columns. Set in CMB2::add_field(). |
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| 106 | * @var bool |
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| 107 | * @since 2.2.2 |
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| 108 | */ |
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| 109 | protected $has_columns = false; |
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| 110 | |||
| 111 | /** |
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| 112 | * If taxonomy field is requesting to remove_default, we store the taxonomy here. |
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| 113 | * @var array |
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| 114 | * @since 2.2.3 |
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| 115 | */ |
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| 116 | protected $tax_metaboxes_to_remove = array(); |
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| 117 | |||
| 118 | /** |
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| 119 | * Get started |
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| 120 | * @since 0.4.0 |
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| 121 | * @param array $config Metabox config array |
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| 122 | * @param integer $object_id Optional object id |
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| 123 | */ |
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| 124 | public function __construct( $config, $object_id = 0 ) { |
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| 152 | |||
| 153 | /** |
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| 154 | * Loops through and displays fields |
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| 155 | * @since 1.0.0 |
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| 156 | * @param int $object_id Object ID |
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| 157 | * @param string $object_type Type of object being saved. (e.g., post, user, or comment) |
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| 158 | */ |
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| 159 | public function show_form( $object_id = 0, $object_type = '' ) { |
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| 168 | |||
| 169 | /** |
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| 170 | * Outputs the opening form markup and runs corresponding hooks: |
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| 171 | * 'cmb2_before_form' and "cmb2_before_{$object_type}_form_{$this->cmb_id}" |
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| 172 | * @since 2.2.0 |
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| 173 | * @param integer $object_id Object ID |
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| 174 | * @param string $object_type Object type |
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| 175 | * @return void |
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| 176 | */ |
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| 177 | public function render_form_open( $object_id = 0, $object_type = '' ) { |
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| 215 | |||
| 216 | /** |
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| 217 | * Defines the classes for the CMB2 form/wrap. |
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| 218 | * |
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| 219 | * @since 2.0.0 |
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| 220 | * @return string Space concatenated list of classes |
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| 221 | */ |
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| 222 | public function box_classes() { |
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| 223 | |||
| 224 | $classes = array( 'cmb2-wrap', 'form-table' ); |
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| 225 | |||
| 226 | // Use the callback to fetch classes. |
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| 227 | View Code Duplication | if ( $added_classes = $this->get_param_callback_result( 'classes_cb' ) ) { |
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| 228 | $added_classes = is_array( $added_classes ) ? $added_classes : array( $added_classes ); |
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| 229 | $classes = array_merge( $classes, $added_classes ); |
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| 230 | } |
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| 231 | |||
| 232 | View Code Duplication | if ( $added_classes = $this->prop( 'classes' ) ) { |
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| 233 | $added_classes = is_array( $added_classes ) ? $added_classes : array( $added_classes ); |
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| 234 | $classes = array_merge( $classes, $added_classes ); |
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| 235 | } |
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| 236 | |||
| 237 | /** |
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| 238 | * Add our context classes for non-standard metaboxes. |
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| 239 | * |
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| 240 | * @since 2.2.4 |
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| 241 | */ |
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| 242 | if ( ! empty( $this->prop( 'context' ) ) && in_array( $this->prop( 'context' ), array( 'form_top', 'before_permalink', 'after_title', 'after_editor' ) ) ) { |
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| 243 | |||
| 244 | // Include the postbox wrapper if we have no title, unless that property is set to false. |
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| 245 | if ( empty( $this->prop( 'title' ) ) && empty( $this->prop( 'remove_box_wrap' ) ) ) { |
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| 246 | $context[] = 'postbox cmb2-context-wrap-no-title'; |
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| 247 | } |
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| 248 | |||
| 249 | // Include a generic context wrapper. |
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| 250 | $context[] = 'cmb2-context-wrap'; |
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| 251 | |||
| 252 | // Include a context-type based context wrapper. |
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| 253 | $context[] = 'cmb2-context-wrap-' . $this->prop( 'context' ); |
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| 254 | |||
| 255 | // Include an ID based context wrapper as well. |
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| 256 | $context[] = 'cmb2-context-wrap-' . $this->prop( 'id' ); |
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| 257 | |||
| 258 | // And merge all the classes back into the array. |
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| 259 | $classes = array_merge( $classes, $context ); |
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| 260 | } |
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| 261 | |||
| 262 | /** |
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| 263 | * Globally filter box wrap classes |
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| 264 | * |
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| 265 | * @since 2.2.2 |
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| 266 | * |
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| 267 | * @param string $classes Array of classes for the cmb2-wrap. |
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| 268 | * @param CMB2 $cmb This CMB2 object. |
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| 269 | */ |
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| 270 | $classes = apply_filters( 'cmb2_wrap_classes', $classes, $this ); |
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| 271 | |||
| 272 | // Clean up. |
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| 273 | $classes = array_map( 'strip_tags', array_filter( $classes ) ); |
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| 274 | |||
| 275 | // Remove any duplicates. |
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| 276 | $classes = array_unique( $classes ); |
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| 277 | |||
| 278 | // Make a string. |
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| 279 | return implode( ' ', $classes ); |
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| 280 | } |
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| 281 | |||
| 282 | /** |
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| 283 | * Outputs the closing form markup and runs corresponding hooks: |
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| 284 | * 'cmb2_after_form' and "cmb2_after_{$object_type}_form_{$this->cmb_id}" |
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| 285 | * @since 2.2.0 |
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| 286 | * @param integer $object_id Object ID |
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| 287 | * @param string $object_type Object type |
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| 288 | * @return void |
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| 289 | */ |
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| 290 | public function render_form_close( $object_id = 0, $object_type = '' ) { |
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| 327 | |||
| 328 | /** |
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| 329 | * Renders a field based on the field type |
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| 330 | * @since 2.2.0 |
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| 331 | * @param array $field_args A field configuration array. |
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| 332 | * @return mixed CMB2_Field object if successful. |
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| 333 | */ |
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| 334 | public function render_field( $field_args ) { |
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| 358 | |||
| 359 | /** |
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| 360 | * Render a repeatable group. |
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| 361 | * @param array $args Array of field arguments for a group field parent. |
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| 362 | * @return CMB2_Field|null Group field object. |
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| 363 | */ |
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| 364 | public function render_group( $args ) { |
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| 418 | |||
| 419 | /** |
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| 420 | * Get the group wrap attributes, which are passed through a filter. |
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| 421 | * @since 2.2.3 |
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| 422 | * @param CMB2_Field $field_group The group CMB2_Field object. |
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| 423 | * @return string The attributes string. |
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| 424 | */ |
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| 425 | public function group_wrap_attributes( $field_group ) { |
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| 450 | |||
| 451 | /** |
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| 452 | * Render a repeatable group row |
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| 453 | * @since 1.0.2 |
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| 454 | * @param CMB2_Field $field_group CMB2_Field group field object |
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| 455 | * @param string $remove_disabled Attribute string to disable the remove button |
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| 456 | */ |
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| 457 | public function render_group_row( $field_group, $remove_disabled ) { |
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| 505 | |||
| 506 | /** |
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| 507 | * Add a hidden field to the list of hidden fields to be rendered later |
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| 508 | * @since 2.0.0 |
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| 509 | * @param array $field_args Array of field arguments to be passed to CMB2_Field |
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| 510 | * @param CMB2_Field|null $field_group CMB2_Field group field object |
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| 511 | */ |
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| 512 | public function add_hidden_field( $field_args, $field_group = null ) { |
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| 530 | |||
| 531 | /** |
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| 532 | * Loop through and output hidden fields |
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| 533 | * @since 2.0.0 |
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| 534 | */ |
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| 535 | public function render_hidden_fields() { |
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| 542 | |||
| 543 | /** |
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| 544 | * Returns array of sanitized field values (without saving them) |
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| 545 | * @since 2.0.3 |
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| 546 | * @param array $data_to_sanitize Array of field_id => value data for sanitizing (likely $_POST data). |
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| 547 | */ |
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| 548 | public function get_sanitized_values( array $data_to_sanitize ) { |
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| 578 | |||
| 579 | /** |
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| 580 | * Loops through and saves field data |
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| 581 | * @since 1.0.0 |
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| 582 | * @param int $object_id Object ID |
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| 583 | * @param string $object_type Type of object being saved. (e.g., post, user, or comment) |
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| 584 | * @param array $data_to_save Array of key => value data for saving. Likely $_POST data. |
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| 585 | */ |
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| 586 | public function save_fields( $object_id = 0, $object_type = '', $data_to_save = array() ) { |
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| 602 | |||
| 603 | /** |
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| 604 | * Process and save form fields |
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| 605 | * @since 2.0.0 |
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| 606 | */ |
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| 607 | public function process_fields() { |
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| 621 | |||
| 622 | /** |
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| 623 | * Process and save a field |
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| 624 | * @since 2.0.0 |
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| 625 | * @param array $field_args Array of field arguments |
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| 626 | */ |
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| 627 | public function process_field( $field_args ) { |
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| 654 | |||
| 655 | public function pre_process() { |
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| 670 | |||
| 671 | public function after_save() { |
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| 706 | |||
| 707 | /** |
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| 708 | * Save a repeatable group |
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| 709 | * @since 1.x.x |
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| 710 | * @param array $args Field arguments array |
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| 711 | * @return mixed Return of CMB2_Field::update_data() |
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| 712 | */ |
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| 713 | public function save_group( $args ) { |
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| 720 | |||
| 721 | /** |
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| 722 | * Save a repeatable group |
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| 723 | * @since 1.x.x |
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| 724 | * @param CMB2_Field $field_group CMB2_Field group field object |
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| 725 | * @return mixed Return of CMB2_Field::update_data() |
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| 726 | */ |
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| 727 | public function save_group_field( $field_group ) { |
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| 804 | |||
| 805 | /** |
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| 806 | * Get object id from global space if no id is provided |
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| 807 | * @since 1.0.0 |
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| 808 | * @param integer $object_id Object ID |
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| 809 | * @return integer $object_id Object ID |
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| 810 | */ |
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| 811 | public function object_id( $object_id = 0 ) { |
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| 850 | |||
| 851 | /** |
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| 852 | * Sets the $object_type based on metabox settings |
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| 853 | * @since 1.0.0 |
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| 854 | * @return string Object type |
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| 855 | */ |
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| 856 | public function mb_object_type() { |
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| 896 | |||
| 897 | /** |
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| 898 | * Gets the box 'object_types' array based on box settings. |
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| 899 | * @since 2.2.3 |
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| 900 | * @return array Object types |
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| 901 | */ |
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| 902 | public function box_types() { |
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| 905 | |||
| 906 | /** |
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| 907 | * Determines if metabox is for an options page |
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| 908 | * @since 1.0.1 |
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| 909 | * @return boolean True/False |
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| 910 | */ |
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| 911 | public function is_options_page_mb() { |
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| 914 | |||
| 915 | /** |
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| 916 | * Returns the object type |
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| 917 | * @since 1.0.0 |
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| 918 | * @return string Object type |
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| 919 | */ |
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| 920 | public function object_type( $object_type = '' ) { |
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| 934 | |||
| 935 | /** |
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| 936 | * Get the object type for the current page, based on the $pagenow global. |
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| 937 | * @since 2.2.2 |
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| 938 | * @return string Page object type name. |
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| 939 | */ |
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| 940 | View Code Duplication | public function current_object_type() { |
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| 958 | |||
| 959 | /** |
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| 960 | * Set metabox property. |
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| 961 | * @since 2.2.2 |
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| 962 | * @param string $property Metabox config property to retrieve |
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| 963 | * @param mixed $value Value to set if no value found |
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| 964 | * @return mixed Metabox config property value or false |
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| 965 | */ |
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| 966 | public function set_prop( $property, $value ) { |
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| 971 | |||
| 972 | /** |
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| 973 | * Get metabox property and optionally set a fallback |
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| 974 | * @since 2.0.0 |
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| 975 | * @param string $property Metabox config property to retrieve |
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| 976 | * @param mixed $fallback Fallback value to set if no value found |
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| 977 | * @return mixed Metabox config property value or false |
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| 978 | */ |
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| 979 | public function prop( $property, $fallback = null ) { |
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| 986 | |||
| 987 | /** |
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| 988 | * Get a field object |
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| 989 | * @since 2.0.3 |
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| 990 | * @param string|array|CMB2_Field $field Metabox field id or field config array or CMB2_Field object |
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| 991 | * @param CMB2_Field|null $field_group (optional) CMB2_Field object (group parent) |
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| 992 | * @return CMB2_Field|false CMB2_Field object (or false) |
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| 993 | */ |
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| 994 | public function get_field( $field, $field_group = null ) { |
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| 1019 | |||
| 1020 | /** |
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| 1021 | * Handles determining which type of arguments to pass to CMB2_Field |
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| 1022 | * @since 2.0.7 |
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| 1023 | * @param mixed $field_id Field (or group field) ID |
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| 1024 | * @param mixed $field_args Array of field arguments |
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| 1025 | * @param mixed $sub_field_id Sub field ID (if field_group exists) |
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| 1026 | * @param CMB2_Field|null $field_group If a sub-field, will be the parent group CMB2_Field object |
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| 1027 | * @return array Array of CMB2_Field arguments |
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| 1028 | */ |
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| 1029 | public function get_field_args( $field_id, $field_args, $sub_field_id, $field_group ) { |
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| 1046 | |||
| 1047 | /** |
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| 1048 | * Get default field arguments specific to this CMB2 object. |
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| 1049 | * @since 2.2.0 |
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| 1050 | * @param array $field_args Metabox field config array. |
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| 1051 | * @param CMB2_Field $field_group (optional) CMB2_Field object (group parent) |
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| 1052 | * @return array Array of field arguments. |
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| 1053 | */ |
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| 1054 | View Code Duplication | protected function get_default_args( $field_args, $field_group = null ) { |
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| 1071 | |||
| 1072 | /** |
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| 1073 | * Get a new field object specific to this CMB2 object. |
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| 1074 | * @since 2.2.0 |
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| 1075 | * @param array $field_args Metabox field config array. |
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| 1076 | * @param CMB2_Field $field_group (optional) CMB2_Field object (group parent) |
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| 1077 | * @return CMB2_Field CMB2_Field object |
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| 1078 | */ |
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| 1079 | protected function get_new_field( $field_args, $field_group = null ) { |
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| 1082 | |||
| 1083 | /** |
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| 1084 | * When fields are added in the old-school way, intitate them as they should be |
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| 1085 | * @since 2.1.0 |
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| 1086 | * @param array $fields Array of fields to add |
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| 1087 | * @param mixed $parent_field_id Parent field id or null |
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| 1088 | */ |
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| 1089 | protected function add_fields( $fields, $parent_field_id = null ) { |
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| 1107 | |||
| 1108 | /** |
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| 1109 | * Add a field to the metabox |
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| 1110 | * @since 2.0.0 |
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| 1111 | * @param array $field Metabox field config array |
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| 1112 | * @param int $position (optional) Position of metabox. 1 for first, etc |
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| 1113 | * @return string|false Field id or false |
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| 1114 | */ |
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| 1115 | public function add_field( array $field, $position = 0 ) { |
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| 1141 | |||
| 1142 | /** |
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| 1143 | * Defines a field's column if requesting to be show in admin columns. |
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| 1144 | * @since 2.2.3 |
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| 1145 | * @param array $field Metabox field config array. |
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| 1146 | * @return array Modified metabox field config array. |
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| 1147 | */ |
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| 1148 | protected function define_field_column( array $field ) { |
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| 1160 | |||
| 1161 | /** |
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| 1162 | * Add a field to a group |
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| 1163 | * @since 2.0.0 |
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| 1164 | * @param string $parent_field_id The field id of the group field to add the field |
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| 1165 | * @param array $field Metabox field config array |
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| 1166 | * @param int $position (optional) Position of metabox. 1 for first, etc |
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| 1167 | * @return mixed Array of parent/field ids or false |
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| 1168 | */ |
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| 1169 | public function add_group_field( $parent_field_id, array $field, $position = 0 ) { |
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| 1192 | |||
| 1193 | /** |
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| 1194 | * Add a field array to a fields array in desired position |
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| 1195 | * @since 2.0.2 |
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| 1196 | * @param array $field Metabox field config array |
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| 1197 | * @param array &$fields Array (passed by reference) to append the field (array) to |
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| 1198 | * @param integer $position Optionally specify a position in the array to be inserted |
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| 1199 | */ |
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| 1200 | protected function _add_field_to_array( $field, &$fields, $position = 0 ) { |
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| 1207 | |||
| 1208 | /** |
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| 1209 | * Remove a field from the metabox |
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| 1210 | * @since 2.0.0 |
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| 1211 | * @param string $field_id The field id of the field to remove |
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| 1212 | * @param string $parent_field_id (optional) The field id of the group field to remove field from |
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| 1213 | * @return bool True if field was removed |
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| 1214 | */ |
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| 1215 | public function remove_field( $field_id, $parent_field_id = '' ) { |
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| 1239 | |||
| 1240 | /** |
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| 1241 | * Update or add a property to a field |
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| 1242 | * @since 2.0.0 |
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| 1243 | * @param string $field_id Field id |
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| 1244 | * @param string $property Field property to set/update |
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| 1245 | * @param mixed $value Value to set the field property |
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| 1246 | * @param string $parent_field_id (optional) The field id of the group field to remove field from |
||
| 1247 | * @return mixed Field id. Strict compare to false, as success can return a falsey value (like 0) |
||
| 1248 | */ |
||
| 1249 | public function update_field_property( $field_id, $property, $value, $parent_field_id = '' ) { |
||
| 1266 | |||
| 1267 | /** |
||
| 1268 | * Check if field ids match a field and return the index/field id |
||
| 1269 | * @since 2.0.2 |
||
| 1270 | * @param string $field_id Field id |
||
| 1271 | * @param string $parent_field_id (optional) Parent field id |
||
| 1272 | * @return mixed Array of field/parent ids, or false |
||
| 1273 | */ |
||
| 1274 | public function get_field_ids( $field_id, $parent_field_id = '' ) { |
||
| 1301 | |||
| 1302 | /** |
||
| 1303 | * When using the old array filter, it is unlikely field array indexes will be the field id |
||
| 1304 | * @since 2.0.2 |
||
| 1305 | * @param string $field_id The field id |
||
| 1306 | * @param array $fields Array of fields to search |
||
| 1307 | * @return mixed Field index or false |
||
| 1308 | */ |
||
| 1309 | public function search_old_school_array( $field_id, $fields ) { |
||
| 1314 | |||
| 1315 | /** |
||
| 1316 | * Handles metabox property callbacks, and passes this $cmb object as property. |
||
| 1317 | * @since 2.2.3 |
||
| 1318 | * @param callable $cb The callback method/function/closure |
||
| 1319 | * @return mixed Return of the callback function. |
||
| 1320 | */ |
||
| 1321 | protected function do_callback( $cb ) { |
||
| 1324 | |||
| 1325 | /** |
||
| 1326 | * Generate a unique nonce field for each registered meta_box |
||
| 1327 | * @since 2.0.0 |
||
| 1328 | * @return string unique nonce hidden input |
||
| 1329 | */ |
||
| 1330 | public function nonce_field() { |
||
| 1333 | |||
| 1334 | /** |
||
| 1335 | * Generate a unique nonce for each registered meta_box |
||
| 1336 | * @since 2.0.0 |
||
| 1337 | * @return string unique nonce string |
||
| 1338 | */ |
||
| 1339 | public function nonce() { |
||
| 1346 | |||
| 1347 | /** |
||
| 1348 | * Magic getter for our object. |
||
| 1349 | * @param string $field |
||
| 1350 | * @throws Exception Throws an exception if the field is invalid. |
||
| 1351 | * @return mixed |
||
| 1352 | */ |
||
| 1353 | public function __get( $field ) { |
||
| 1363 | |||
| 1364 | } |
||
| 1365 |
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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.