Complex classes like RootConfig 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 RootConfig, and based on these observations, apply Extract Interface, too.
1 | <?php |
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6 | class RootConfig extends IndexConfig |
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7 | { |
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8 | protected $target; |
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9 | protected $conversionProcess; |
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10 | protected $renderingProcess; |
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11 | protected $tocProcess; |
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12 | protected $headingsProcess; |
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13 | protected $copyImageProcess; |
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14 | protected $copyrightProcess; |
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15 | protected $template; |
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16 | protected $rootHref; |
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17 | protected $tocDepth; |
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18 | protected $copyright; |
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19 | |||
20 | /** |
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21 | * @var array |
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22 | */ |
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23 | protected $commonMarkExtensions = array(); |
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24 | |||
25 | 5 | public function setOverrides(array $overrides) |
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31 | |||
32 | 2 | protected function setOverride($key, $val) |
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56 | |||
57 | 29 | protected function init() |
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73 | |||
74 | 29 | protected function initTarget() |
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84 | |||
85 | 28 | protected function initRootHref() |
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91 | |||
92 | 28 | protected function initCommonMarkExtensions() |
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110 | |||
111 | 28 | protected function initTemplate() |
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117 | |||
118 | 29 | protected function initTocDepth() |
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124 | |||
125 | 28 | protected function initCopyright() |
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131 | |||
132 | |||
133 | 28 | protected function initConversionProcess() |
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139 | |||
140 | 28 | protected function initHeadingsProcess() |
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146 | |||
147 | 28 | protected function initCopyImageProcess() |
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153 | |||
154 | 28 | protected function initCopyrightProcess() |
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160 | |||
161 | 28 | protected function initTocProcess() |
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167 | |||
168 | 28 | protected function initRenderingProcess() |
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174 | |||
175 | 19 | public function getConversionProcess() |
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179 | |||
180 | 16 | public function getHeadingsProcess() |
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184 | |||
185 | 3 | public function getCopyImageProcess() |
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189 | |||
190 | 3 | public function getCopyrightProcess() |
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194 | |||
195 | 15 | public function getTocProcess() |
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199 | |||
200 | 5 | public function getRenderingProcess() |
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204 | |||
205 | 24 | public function getTarget() |
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209 | |||
210 | 19 | public function getRootHref() |
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214 | |||
215 | 6 | public function getTemplate() |
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219 | |||
220 | 6 | public function getTocDepth() |
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224 | |||
225 | 2 | public function getCopyright() |
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229 | |||
230 | 1 | public function get($key, $alt = null) |
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237 | |||
238 | /** |
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239 | * @return array |
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240 | */ |
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241 | 18 | public function getCommonMarkExtensions() |
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245 | } |
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246 |