Complex classes like InstanceViewer 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 InstanceViewer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 5 | class InstanceViewer { |
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| 6 | protected $widgetIdentifier; |
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| 7 | protected $instance; |
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| 8 | protected $reflect; |
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| 9 | protected $properties; |
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| 10 | protected $visibleProperties; |
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| 11 | protected $values; |
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| 12 | protected $afterCompile; |
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| 13 | protected $captions; |
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| 14 | protected $captionCallback; |
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| 15 | protected $defaultValueFunction; |
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| 16 | |||
| 17 | |||
| 18 | public static $index=0; |
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| 19 | |||
| 20 | public function __construct($identifier,$instance=NULL,$captions=NULL){ |
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| 30 | |||
| 31 | public function getValues(){ |
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| 40 | |||
| 41 | public function getIdentifier($index=NULL){ |
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| 49 | |||
| 50 | public function getValue($index){ |
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| 54 | |||
| 55 | protected function _beforeAddProperty($index,&$field){ |
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| 58 | |||
| 59 | protected function _getDefaultValue($name,$value,$index){ |
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| 63 | |||
| 64 | protected function _getValue($property,$index){ |
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| 97 | |||
| 98 | public function insertField($index,$field){ |
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| 102 | |||
| 103 | public function insertInField($index,$field){ |
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| 116 | |||
| 117 | public function addField($field){ |
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| 121 | |||
| 122 | public function count(){ |
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| 125 | |||
| 126 | public function visiblePropertiesCount(){ |
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| 129 | |||
| 130 | public function getProperty($index){ |
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| 133 | |||
| 134 | public function getFieldName($index){ |
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| 145 | |||
| 146 | |||
| 147 | protected function showableProperty(\ReflectionProperty $rProperty){ |
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| 150 | |||
| 151 | public function setInstance($instance) { |
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| 167 | |||
| 168 | private function setInstanceProperty($property){ |
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| 190 | |||
| 191 | protected function getDefaultProperties(){ |
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| 202 | |||
| 203 | public function setVisibleProperties($visibleProperties) { |
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| 207 | |||
| 208 | public function setValueFunction($index,$callback){ |
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| 212 | |||
| 213 | public function setIdentifierFunction($callback){ |
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| 217 | |||
| 218 | public static function setIndex($index) { |
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| 221 | |||
| 222 | public function getProperties() { |
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| 225 | |||
| 226 | public function getCaption($index){ |
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| 237 | |||
| 238 | public function getCaptions(){ |
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| 258 | |||
| 259 | public function setCaption($index,$caption){ |
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| 265 | |||
| 266 | public function setCaptions($captions) { |
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| 270 | |||
| 271 | /** |
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| 272 | * Associates a $callback function after the compilation of the field at $index position |
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| 273 | * The $callback function can take the following arguments : $field=>the compiled field, $instance : the active instance of the object, $index: the field position |
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| 274 | * @param int $index postion of the compiled field |
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| 275 | * @param callable $callback function called after the field compilation |
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| 276 | * @return \Ajax\semantic\widgets\datatable\InstanceViewer |
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| 277 | */ |
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| 278 | public function afterCompile($index,$callback){ |
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| 282 | |||
| 283 | /** |
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| 284 | * Defines a callback function to call for modifying captions |
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| 285 | * function parameters are $captions: the captions to modify and $instance: the active model instance |
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| 286 | * @param callable $captionCallback |
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| 287 | * @return \Ajax\semantic\widgets\base\InstanceViewer |
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| 288 | */ |
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| 289 | public function setCaptionCallback($captionCallback) { |
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| 293 | |||
| 294 | public function setDefaultValueFunction($defaultValueFunction) { |
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| 298 | |||
| 299 | |||
| 300 | } |