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 Form 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 Form, and based on these observations, apply Extract Interface, too.
| 1 | <?php namespace Anomaly\Streams\Platform\Ui\Form; |
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| 27 | class Form implements PresentableInterface |
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| 28 | { |
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| 29 | |||
| 30 | /** |
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| 31 | * The form model. |
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| 32 | * |
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| 33 | * @var null|mixed |
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| 34 | */ |
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| 35 | protected $model = null; |
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| 36 | |||
| 37 | /** |
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| 38 | * The form stream. |
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| 39 | * |
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| 40 | * @var null|StreamInterface |
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| 41 | */ |
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| 42 | protected $stream = null; |
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| 43 | |||
| 44 | /** |
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| 45 | * The form entry. |
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| 46 | * |
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| 47 | * @var mixed |
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| 48 | */ |
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| 49 | protected $entry = null; |
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| 50 | |||
| 51 | /** |
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| 52 | * The form content. |
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| 53 | * |
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| 54 | * @var null|string |
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| 55 | */ |
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| 56 | protected $content = null; |
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| 57 | |||
| 58 | /** |
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| 59 | * The form response. |
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| 60 | * |
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| 61 | * @var null|Response |
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| 62 | */ |
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| 63 | protected $response = null; |
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| 64 | |||
| 65 | /** |
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| 66 | * The form model. This is set |
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| 67 | * to create / edit automatically. |
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| 68 | * |
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| 69 | * @var null|string |
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| 70 | */ |
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| 71 | protected $mode = null; |
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| 72 | |||
| 73 | /** |
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| 74 | * The form data. |
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| 75 | * |
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| 76 | * @var Collection |
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| 77 | */ |
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| 78 | protected $data; |
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| 79 | |||
| 80 | /** |
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| 81 | * The form errors. |
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| 82 | * |
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| 83 | * @var MessageBag |
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| 84 | */ |
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| 85 | protected $errors; |
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| 86 | |||
| 87 | /** |
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| 88 | * The form values. |
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| 89 | * |
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| 90 | * @var Collection |
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| 91 | */ |
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| 92 | protected $values; |
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| 93 | |||
| 94 | /** |
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| 95 | * The form fields. |
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| 96 | * |
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| 97 | * @var FieldCollection |
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| 98 | */ |
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| 99 | protected $fields; |
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| 100 | |||
| 101 | /** |
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| 102 | * The form options. |
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| 103 | * |
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| 104 | * @var Collection |
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| 105 | */ |
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| 106 | protected $options; |
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| 107 | |||
| 108 | /** |
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| 109 | * The form actions. |
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| 110 | * |
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| 111 | * @var ActionCollection |
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| 112 | */ |
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| 113 | protected $actions; |
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| 114 | |||
| 115 | /** |
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| 116 | * The form buttons. |
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| 117 | * |
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| 118 | * @var ButtonCollection |
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| 119 | */ |
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| 120 | protected $buttons; |
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| 121 | |||
| 122 | /** |
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| 123 | * The form sections. |
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| 124 | * |
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| 125 | * @var SectionCollection |
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| 126 | */ |
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| 127 | protected $sections; |
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| 128 | |||
| 129 | /** |
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| 130 | * Create a new Form instance. |
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| 131 | * |
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| 132 | * @param Collection $data |
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| 133 | * @param Collection $values |
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| 134 | * @param Collection $options |
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| 135 | * @param MessageBag $errors |
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| 136 | * @param FieldCollection $fields |
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| 137 | * @param ActionCollection $actions |
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| 138 | * @param ButtonCollection $buttons |
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| 139 | * @param SectionCollection $sections |
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| 140 | */ |
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| 141 | public function __construct( |
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| 160 | |||
| 161 | /** |
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| 162 | * Set the form response. |
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| 163 | * |
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| 164 | * @param null|false|Response $response |
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| 165 | * @return $this |
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| 166 | */ |
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| 167 | public function setResponse(Response $response) |
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| 173 | |||
| 174 | /** |
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| 175 | * Get the form response. |
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| 176 | * |
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| 177 | * @return null|Response |
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| 178 | */ |
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| 179 | public function getResponse() |
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| 183 | |||
| 184 | /** |
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| 185 | * Get the errors. |
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| 186 | * |
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| 187 | * @return MessageBag |
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| 188 | */ |
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| 189 | public function getErrors() |
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| 193 | |||
| 194 | /** |
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| 195 | * Set the errors. |
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| 196 | * |
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| 197 | * @param MessageBag $errors |
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| 198 | * @return $this |
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| 199 | */ |
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| 200 | public function setErrors(MessageBag $errors) |
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| 206 | |||
| 207 | /** |
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| 208 | * Return whether the form has errors or not. |
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| 209 | * |
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| 210 | * @return bool |
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| 211 | */ |
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| 212 | public function hasErrors() |
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| 216 | |||
| 217 | /** |
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| 218 | * Return whether a field has errors or not. |
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| 219 | * |
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| 220 | * @return bool |
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| 221 | */ |
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| 222 | public function hasError($fieldName) |
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| 226 | |||
| 227 | /** |
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| 228 | * Set the model object. |
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| 229 | * |
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| 230 | * @param $model |
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| 231 | * @return $this |
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| 232 | */ |
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| 233 | public function setModel($model) |
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| 239 | |||
| 240 | /** |
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| 241 | * Get the model object. |
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| 242 | * |
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| 243 | * @return null|EloquentModel|EntryModel |
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| 244 | */ |
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| 245 | public function getModel() |
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| 249 | |||
| 250 | /** |
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| 251 | * Set the form stream. |
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| 252 | * |
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| 253 | * @param StreamInterface $stream |
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| 254 | * @return $this |
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| 255 | */ |
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| 256 | public function setStream(StreamInterface $stream) |
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| 262 | |||
| 263 | /** |
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| 264 | * Get the form stream. |
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| 265 | * |
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| 266 | * @return null|StreamInterface |
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| 267 | */ |
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| 268 | public function getStream() |
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| 272 | |||
| 273 | /** |
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| 274 | * Set the entry. |
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| 275 | * |
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| 276 | * @param mixed $entry |
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| 277 | * @return $this |
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| 278 | */ |
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| 279 | public function setEntry($entry) |
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| 285 | |||
| 286 | /** |
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| 287 | * Get the entry. |
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| 288 | * |
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| 289 | * @return EloquentModel|EntryInterface |
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| 290 | */ |
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| 291 | public function getEntry() |
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| 295 | |||
| 296 | /** |
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| 297 | * Set the form content. |
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| 298 | * |
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| 299 | * @param string $content |
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| 300 | * @return $this |
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| 301 | */ |
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| 302 | public function setContent($content) |
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| 308 | |||
| 309 | /** |
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| 310 | * Get the form content. |
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| 311 | * |
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| 312 | * @return null|View |
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| 313 | */ |
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| 314 | public function getContent() |
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| 318 | |||
| 319 | /** |
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| 320 | * Add an action to the actions collection. |
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| 321 | * |
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| 322 | * @param ActionInterface $action |
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| 323 | * @return $this |
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| 324 | */ |
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| 325 | public function addAction(ActionInterface $action) |
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| 331 | |||
| 332 | /** |
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| 333 | * Set the form actions. |
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| 334 | * |
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| 335 | * @param ActionCollection $actions |
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| 336 | * @return $this |
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| 337 | */ |
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| 338 | public function setActions(ActionCollection $actions) |
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| 344 | |||
| 345 | /** |
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| 346 | * Get the form actions. |
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| 347 | * |
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| 348 | * @return ActionCollection |
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| 349 | */ |
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| 350 | public function getActions() |
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| 354 | |||
| 355 | /** |
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| 356 | * Add a button to the buttons collection. |
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| 357 | * |
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| 358 | * @param ButtonInterface $button |
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| 359 | * @return $this |
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| 360 | */ |
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| 361 | public function addButton(ButtonInterface $button) |
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| 367 | |||
| 368 | /** |
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| 369 | * Set the form buttons. |
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| 370 | * |
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| 371 | * @param ButtonCollection $buttons |
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| 372 | * @return $this |
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| 373 | */ |
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| 374 | public function setButtons(ButtonCollection $buttons) |
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| 380 | |||
| 381 | /** |
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| 382 | * Get the form buttons. |
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| 383 | * |
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| 384 | * @return ButtonCollection |
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| 385 | */ |
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| 386 | public function getButtons() |
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| 390 | |||
| 391 | /** |
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| 392 | * Set the options. |
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| 393 | * |
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| 394 | * @param Collection $options |
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| 395 | * @return $this |
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| 396 | */ |
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| 397 | public function setOptions(Collection $options) |
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| 403 | |||
| 404 | /** |
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| 405 | * Get the options. |
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| 406 | * |
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| 407 | * @return Collection |
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| 408 | */ |
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| 409 | public function getOptions() |
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| 413 | |||
| 414 | /** |
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| 415 | * Set an option. |
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| 416 | * |
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| 417 | * @param $key |
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| 418 | * @param $value |
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| 419 | * @return $this |
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| 420 | */ |
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| 421 | public function setOption($key, $value) |
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| 427 | |||
| 428 | /** |
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| 429 | * Get an option value. |
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| 430 | * |
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| 431 | * @param $key |
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| 432 | * @param null $default |
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| 433 | * @return mixed |
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| 434 | */ |
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| 435 | public function getOption($key, $default = null) |
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| 439 | |||
| 440 | /** |
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| 441 | * Get the sections. |
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| 442 | * |
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| 443 | * @return SectionCollection |
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| 444 | */ |
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| 445 | public function getSections() |
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| 449 | |||
| 450 | /** |
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| 451 | * Set the sections. |
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| 452 | * |
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| 453 | * @param SectionCollection $sections |
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| 454 | * @return $this |
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| 455 | */ |
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| 456 | public function setSections(SectionCollection $sections) |
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| 462 | |||
| 463 | /** |
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| 464 | * Add a section. |
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| 465 | * |
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| 466 | * @param $slug |
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| 467 | * @param $section |
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| 468 | * @return $this |
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| 469 | */ |
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| 470 | public function addSection($slug, $section) |
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| 476 | |||
| 477 | /** |
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| 478 | * Add a field to the collection of fields. |
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| 479 | * |
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| 480 | * @param FieldType $field |
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| 481 | * @return $this |
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| 482 | */ |
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| 483 | public function addField(FieldType $field) |
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| 489 | |||
| 490 | /** |
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| 491 | * Remove a field. |
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| 492 | * |
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| 493 | * @param $field |
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| 494 | * @return $this |
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| 495 | */ |
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| 496 | public function removeField($field) |
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| 502 | |||
| 503 | /** |
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| 504 | * Disable a field. |
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| 505 | * |
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| 506 | * @param $field |
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| 507 | * @return $this |
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| 508 | */ |
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| 509 | public function disableField($field) |
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| 517 | |||
| 518 | /** |
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| 519 | * Set the form views. |
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| 520 | * |
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| 521 | * @param Collection $fields |
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| 522 | * @return $this |
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| 523 | */ |
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| 524 | public function setFields(Collection $fields) |
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| 530 | |||
| 531 | /** |
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| 532 | * Get the form fields. |
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| 533 | * |
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| 534 | * @return FieldCollection |
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| 535 | */ |
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| 536 | public function getFields() |
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| 540 | |||
| 541 | /** |
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| 542 | * Get the enabled fields. |
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| 543 | * |
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| 544 | * @return FieldCollection |
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| 545 | */ |
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| 546 | public function getEnabledFields() |
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| 550 | |||
| 551 | /** |
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| 552 | * Get a form field. |
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| 553 | * |
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| 554 | * @param $field |
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| 555 | * @return FieldType|mixed |
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| 556 | */ |
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| 557 | public function getField($field) |
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| 561 | |||
| 562 | /** |
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| 563 | * Set a field value. |
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| 564 | * |
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| 565 | * @param $field |
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| 566 | * @param $value |
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| 567 | * @return $this |
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| 568 | */ |
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| 569 | public function setFieldValue($field, $value) |
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| 577 | |||
| 578 | /** |
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| 579 | * Add data to the view data collection. |
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| 580 | * |
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| 581 | * @param $key |
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| 582 | * @param $value |
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| 583 | * @return $this |
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| 584 | */ |
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| 585 | public function addData($key, $value) |
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| 591 | |||
| 592 | /** |
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| 593 | * Set the form data. |
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| 594 | * |
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| 595 | * @param Collection $data |
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| 596 | * @return $this |
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| 597 | */ |
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| 598 | public function setData(Collection $data) |
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| 604 | |||
| 605 | /** |
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| 606 | * Get the form data. |
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| 607 | * |
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| 608 | * @return Collection |
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| 609 | */ |
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| 610 | public function getData() |
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| 614 | |||
| 615 | /** |
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| 616 | * Set a value on the value collection. |
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| 617 | * |
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| 618 | * @param $key |
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| 619 | * @param $value |
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| 620 | */ |
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| 621 | public function setValue($key, $value) |
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| 625 | |||
| 626 | /** |
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| 627 | * Get a value from the value collection. |
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| 628 | * |
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| 629 | * @param $key |
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| 630 | * @param null $default |
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| 631 | * @return mixed |
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| 632 | */ |
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| 633 | public function getValue($key, $default = null) |
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| 637 | |||
| 638 | /** |
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| 639 | * Set the form values. |
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| 640 | * |
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| 641 | * @param Collection $values |
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| 642 | * @return $this |
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| 643 | */ |
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| 644 | public function setValues(Collection $values) |
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| 650 | |||
| 651 | /** |
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| 652 | * Get the form values. |
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| 653 | * |
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| 654 | * @return Collection |
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| 655 | */ |
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| 656 | public function getValues() |
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| 660 | |||
| 661 | /** |
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| 662 | * Get the mode. |
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| 663 | * |
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| 664 | * @return null|string |
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| 665 | */ |
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| 666 | public function getMode() |
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| 670 | |||
| 671 | /** |
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| 672 | * Set the mode. |
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| 673 | * |
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| 674 | * @param $mode |
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| 675 | * @return $this |
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| 676 | */ |
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| 677 | public function setMode($mode) |
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| 683 | |||
| 684 | /** |
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| 685 | * Return whether the form is translatable or not. |
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| 686 | * |
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| 687 | * @return bool |
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| 688 | */ |
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| 689 | public function isTranslatable() |
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| 695 | |||
| 696 | /** |
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| 697 | * Reset field values. |
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| 698 | */ |
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| 699 | public function resetFields() |
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| 708 | |||
| 709 | /** |
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| 710 | * Return a created presenter. |
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| 711 | * |
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| 712 | * @return FormPresenter |
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| 713 | */ |
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| 714 | View Code Duplication | public function getPresenter() |
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| 724 | } |
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| 725 |
Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.