Complex classes like Builder 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 Builder, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 20 | class Builder implements BuilderContract  | 
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| 21 | { | 
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| 22 | use HasAttributes, TraitHasActiveAttributes;  | 
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| 23 | |||
| 24 | /**  | 
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| 25 | * @var Container  | 
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| 26 | */  | 
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| 27 | protected $app;  | 
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| 28 | |||
| 29 | /**  | 
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| 30 | * @var array  | 
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| 31 | */  | 
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| 32 | protected $elements;  | 
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| 33 | |||
| 34 | /**  | 
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| 35 | * @var array  | 
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| 36 | */  | 
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| 37 | protected $indexes = [];  | 
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| 38 | |||
| 39 | /**  | 
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| 40 | * @var string  | 
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| 41 | */  | 
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| 42 | protected $type;  | 
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| 43 | |||
| 44 | /**  | 
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| 45 | * @var MenuRender  | 
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| 46 | */  | 
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| 47 | protected $viewFactory;  | 
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| 48 | |||
| 49 | /**  | 
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| 50 | * @var array  | 
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| 51 | */  | 
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| 52 | protected $config;  | 
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| 53 | |||
| 54 | /**  | 
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| 55 | * @var string  | 
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| 56 | */  | 
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| 57 | protected $view = null;  | 
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| 58 | |||
| 59 | /**  | 
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| 60 | * @inheritDoc  | 
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| 61 | */  | 
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| 62 | 26 | public function __construct(Container $container, AttributesContract $attributes,  | 
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| 77 | |||
| 78 | /**  | 
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| 79 | * @inheritDoc  | 
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| 80 | */  | 
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| 81 | 20 | public function create($name, $type, $callback = null)  | 
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| 111 | |||
| 112 | /**  | 
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| 113 | * @inheritDoc  | 
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| 114 | */  | 
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| 115 | public function insertBefore($name, \Closure $callback)  | 
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| 120 | |||
| 121 | /**  | 
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| 122 | * @inheritDoc  | 
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| 123 | */  | 
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| 124 | public function insertAfter($name, \Closure $callback)  | 
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| 129 | |||
| 130 | /**  | 
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| 131 | * @inheritDoc  | 
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| 132 | */  | 
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| 133 | public function has($name)  | 
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| 137 | |||
| 138 | /**  | 
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| 139 | * @inheritDoc  | 
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| 140 | */  | 
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| 141 | public function get($name, $default = null)  | 
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| 148 | |||
| 149 | /**  | 
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| 150 | * @inheritDoc  | 
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| 151 | */  | 
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| 152 | public function getByIndex($index, $default = null)  | 
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| 158 | |||
| 159 | /**  | 
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| 160 | * @inheritDoc  | 
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| 161 | */  | 
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| 162 | public function all()  | 
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| 166 | |||
| 167 | /**  | 
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| 168 | * @inheritDoc  | 
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| 169 | */  | 
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| 170 | public function forget($name)  | 
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| 176 | |||
| 177 | /**  | 
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| 178 | * @inheritDoc  | 
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| 179 | */  | 
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| 180 | public function getType()  | 
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| 184 | |||
| 185 | /**  | 
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| 186 | * @inheritDoc  | 
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| 187 | */  | 
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| 188 | public function setType($type)  | 
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| 192 | |||
| 193 | /**  | 
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| 194 | * @inheritDoc  | 
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| 195 | */  | 
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| 196 | public function render($renderView = null)  | 
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| 213 | |||
| 214 | /**  | 
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| 215 | * @inheritDoc  | 
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| 216 | */  | 
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| 217 | public function getView()  | 
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| 221 | |||
| 222 | /**  | 
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| 223 | * @inheritDoc  | 
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| 224 | */  | 
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| 225 | public function setView($view)  | 
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| 233 | |||
| 234 | /**  | 
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| 235 | * Minify html  | 
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| 236 | *  | 
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| 237 | * @param string $html  | 
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| 238 | * @return string  | 
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| 239 | */  | 
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| 240 | protected function minifyHtmlOutput($html)  | 
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| 256 | |||
| 257 | /**  | 
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| 258 | * Get view for render  | 
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| 259 | *  | 
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| 260 | * @param string $view  | 
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| 261 | * @return string  | 
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| 262 | */  | 
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| 263 | protected function getRenderView($view = null)  | 
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| 277 | |||
| 278 | /**  | 
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| 279 | * @param string $name  | 
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| 280 | * @param Element $item  | 
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| 281 | */  | 
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| 282 | protected function saveItem($name, $item)  | 
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| 287 | |||
| 288 | /**  | 
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| 289 | * @param string $name  | 
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| 290 | * @param array $attributes  | 
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| 291 | * @param array $activeAttributes  | 
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| 292 | * @param \Closure|null $callback  | 
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| 293 | * @return BuilderContract  | 
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| 294 | */  | 
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| 295 | protected function builderFactory($name, $attributes = [], $activeAttributes = [], $callback = null)  | 
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| 311 | |||
| 312 | protected function rebuildIndexesArray()  | 
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| 321 | |||
| 322 | /**  | 
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| 323 | * @param string $name  | 
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| 324 | * @param \Closure $callback  | 
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| 325 | * @return array  | 
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| 326 | */  | 
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| 327 | protected function prepareInsert($name, $callback)  | 
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| 343 | |||
| 344 | /**  | 
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| 345 | * @param int $position  | 
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| 346 | * @param array $values  | 
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| 347 | */  | 
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| 348 | protected function insert($position, $values)  | 
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| 354 | |||
| 355 | /**  | 
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| 356 | * @param $element  | 
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| 357 | * @return ElementFactory  | 
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| 358 | */  | 
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| 359 | protected function getFactory($element)  | 
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| 365 | |||
| 366 | /**  | 
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| 367 | * @inheritDoc  | 
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| 368 | */  | 
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| 369 | public function toArray()  | 
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| 387 | |||
| 388 | /**  | 
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| 389 | * @inheritDoc  | 
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| 390 | */  | 
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| 391 | public function offsetExists($offset)  | 
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| 398 | |||
| 399 | /**  | 
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| 400 | * @inheritDoc  | 
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| 401 | */  | 
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| 402 | public function offsetGet($offset)  | 
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| 412 | |||
| 413 | /**  | 
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| 414 | * @inheritDoc  | 
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| 415 | */  | 
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| 416 | public function offsetSet($offset, $value)  | 
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| 422 | |||
| 423 | /**  | 
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| 424 | * @inheritDoc  | 
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| 425 | */  | 
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| 426 | public function offsetUnset($offset)  | 
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| 430 | |||
| 431 | /**  | 
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| 432 | * @inheritDoc  | 
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| 433 | */  | 
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| 434 | public function serialize()  | 
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| 444 | |||
| 445 | /**  | 
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| 446 | * @inheritDoc  | 
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| 447 | */  | 
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| 448 | public function unserialize($serialized)  | 
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| 464 | |||
| 465 | /**  | 
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| 466 | * @inheritDoc  | 
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| 467 | */  | 
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| 468 | static public function fromArray(array $builder)  | 
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| 502 | }  |