Complex classes like Localization 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 Localization, and based on these observations, apply Extract Interface, too.
| 1 | <?php namespace Arcanedev\Localization; |
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| 18 | class Localization implements LocalizationContract |
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| 19 | { |
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| 20 | /* ----------------------------------------------------------------- |
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| 21 | | Properties |
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| 22 | | ----------------------------------------------------------------- |
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| 23 | */ |
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| 24 | |||
| 25 | /** |
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| 26 | * Base url. |
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| 27 | * |
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| 28 | * @var string |
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| 29 | */ |
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| 30 | protected $baseUrl; |
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| 31 | |||
| 32 | /** |
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| 33 | * Laravel application instance. |
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| 34 | * |
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| 35 | * @var \Illuminate\Contracts\Foundation\Application |
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| 36 | */ |
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| 37 | private $app; |
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| 38 | |||
| 39 | /** |
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| 40 | * The RouteTranslator instance. |
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| 41 | * |
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| 42 | * @var \Arcanedev\Localization\Contracts\RouteTranslator |
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| 43 | */ |
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| 44 | protected $routeTranslator; |
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| 45 | |||
| 46 | /** |
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| 47 | * The LocalesManager instance. |
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| 48 | * |
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| 49 | * @var \Arcanedev\Localization\Contracts\LocalesManager |
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| 50 | */ |
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| 51 | private $localesManager; |
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| 52 | |||
| 53 | /* ----------------------------------------------------------------- |
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| 54 | | Constructor |
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| 55 | | ----------------------------------------------------------------- |
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| 56 | */ |
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| 57 | |||
| 58 | /** |
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| 59 | * Localization constructor. |
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| 60 | * |
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| 61 | * @param \Illuminate\Contracts\Foundation\Application $app |
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| 62 | * @param \Arcanedev\Localization\Contracts\RouteTranslator $routeTranslator |
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| 63 | * @param \Arcanedev\Localization\Contracts\LocalesManager $localesManager |
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| 64 | */ |
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| 65 | 268 | public function __construct( |
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| 78 | |||
| 79 | /* ----------------------------------------------------------------- |
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| 80 | | Getters & Setters |
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| 81 | | ----------------------------------------------------------------- |
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| 82 | */ |
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| 83 | |||
| 84 | /** |
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| 85 | * Get Request instance. |
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| 86 | * |
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| 87 | * @return \Illuminate\Http\Request |
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| 88 | */ |
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| 89 | 106 | private function request() |
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| 93 | |||
| 94 | /** |
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| 95 | * Returns default locale. |
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| 96 | * |
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| 97 | * @return string |
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| 98 | */ |
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| 99 | 112 | public function getDefaultLocale() |
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| 103 | |||
| 104 | /** |
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| 105 | * Return an array of all supported Locales. |
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| 106 | * |
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| 107 | * @return \Arcanedev\Localization\Entities\LocaleCollection |
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| 108 | */ |
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| 109 | 108 | public function getSupportedLocales() |
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| 113 | |||
| 114 | /** |
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| 115 | * Set the supported locales. |
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| 116 | * |
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| 117 | * @param array $supportedLocales |
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| 118 | * |
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| 119 | * @return self |
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| 120 | */ |
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| 121 | 4 | public function setSupportedLocales(array $supportedLocales) |
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| 127 | |||
| 128 | /** |
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| 129 | * Get supported locales keys. |
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| 130 | * |
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| 131 | * @return array |
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| 132 | */ |
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| 133 | 2 | public function getSupportedLocalesKeys() |
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| 137 | |||
| 138 | /** |
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| 139 | * Returns current language. |
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| 140 | * |
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| 141 | * @return string |
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| 142 | */ |
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| 143 | 110 | public function getCurrentLocale() |
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| 147 | |||
| 148 | /** |
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| 149 | * Returns current language. |
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| 150 | * |
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| 151 | * @return \Arcanedev\Localization\Entities\Locale |
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| 152 | */ |
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| 153 | 10 | public function getCurrentLocaleEntity() |
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| 157 | |||
| 158 | /** |
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| 159 | * Returns current locale name. |
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| 160 | * |
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| 161 | * @return string |
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| 162 | */ |
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| 163 | 2 | public function getCurrentLocaleName() |
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| 167 | |||
| 168 | /** |
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| 169 | * Returns current locale script. |
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| 170 | * |
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| 171 | * @return string |
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| 172 | */ |
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| 173 | 2 | public function getCurrentLocaleScript() |
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| 177 | |||
| 178 | /** |
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| 179 | * Returns current locale direction. |
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| 180 | * |
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| 181 | * @return string |
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| 182 | */ |
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| 183 | 2 | public function getCurrentLocaleDirection() |
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| 187 | |||
| 188 | /** |
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| 189 | * Returns current locale native name. |
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| 190 | * |
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| 191 | * @return string |
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| 192 | */ |
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| 193 | 2 | public function getCurrentLocaleNative() |
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| 197 | |||
| 198 | /** |
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| 199 | * Returns current locale regional. |
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| 200 | * |
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| 201 | * @return string |
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| 202 | */ |
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| 203 | 2 | public function getCurrentLocaleRegional() |
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| 207 | |||
| 208 | /** |
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| 209 | * Get all locales. |
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| 210 | * |
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| 211 | * @return \Arcanedev\Localization\Entities\LocaleCollection |
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| 212 | */ |
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| 213 | 2 | public function getAllLocales() |
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| 217 | |||
| 218 | /** |
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| 219 | * Set and return current locale. |
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| 220 | * |
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| 221 | * @param string|null $locale |
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| 222 | * |
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| 223 | * @return string |
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| 224 | */ |
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| 225 | 268 | public function setLocale($locale = null) |
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| 229 | |||
| 230 | /** |
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| 231 | * Sets the base url for the site. |
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| 232 | * |
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| 233 | * @param string $url |
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| 234 | * |
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| 235 | * @return self |
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| 236 | */ |
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| 237 | 268 | public function setBaseUrl($url) |
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| 245 | |||
| 246 | /* ----------------------------------------------------------------- |
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| 247 | | Main Methods |
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| 248 | | ----------------------------------------------------------------- |
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| 249 | */ |
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| 250 | |||
| 251 | /** |
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| 252 | * Translate routes and save them to the translated routes array (used in the localize route filter). |
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| 253 | * |
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| 254 | * @param string $routeName |
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| 255 | * |
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| 256 | * @return string |
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| 257 | */ |
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| 258 | 268 | public function transRoute($routeName) |
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| 262 | |||
| 263 | /** |
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| 264 | * Returns an URL adapted to $locale or current locale. |
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| 265 | * |
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| 266 | * @param string|null $url |
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| 267 | * @param string|null $locale |
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| 268 | * |
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| 269 | * @return string |
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| 270 | */ |
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| 271 | 4 | public function localizeURL($url = null, $locale = null) |
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| 275 | |||
| 276 | /** |
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| 277 | * It returns an URL without locale (if it has it). |
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| 278 | * |
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| 279 | * @param string|null $url |
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| 280 | * |
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| 281 | * @return string |
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| 282 | */ |
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| 283 | 106 | public function getNonLocalizedURL($url = null) |
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| 287 | |||
| 288 | /** |
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| 289 | * Returns an URL adapted to $locale or current locale. |
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| 290 | * |
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| 291 | * @param string|null $locale |
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| 292 | * @param string|null $url |
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| 293 | * @param array $attributes |
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| 294 | * @param bool|false $showHiddenLocale |
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| 295 | * |
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| 296 | * @return string|false |
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| 297 | */ |
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| 298 | 106 | public function getLocalizedURL($locale = null, $url = null, array $attributes = [], $showHiddenLocale = false) |
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| 358 | |||
| 359 | /** |
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| 360 | * Create an url from the uri. |
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| 361 | * |
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| 362 | * @param string $uri |
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| 363 | * |
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| 364 | * @return string |
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| 365 | */ |
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| 366 | 110 | public function createUrlFromUri($uri) |
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| 374 | |||
| 375 | /** |
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| 376 | * Get locales navigation bar. |
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| 377 | * |
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| 378 | * @return string |
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| 379 | */ |
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| 380 | 2 | public function localesNavbar() |
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| 388 | |||
| 389 | /* ----------------------------------------------------------------- |
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| 390 | | Translation Methods |
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| 391 | | ----------------------------------------------------------------- |
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| 392 | */ |
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| 393 | |||
| 394 | /** |
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| 395 | * Returns the translated route for an url and the attributes given and a locale |
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| 396 | * |
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| 397 | * @param string $url |
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| 398 | * @param array $attributes |
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| 399 | * @param string $locale |
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| 400 | * |
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| 401 | * @return string|false |
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| 402 | */ |
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| 403 | 104 | private function findTranslatedRouteByUrl($url, $attributes, $locale) |
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| 418 | |||
| 419 | /** |
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| 420 | * Returns an URL adapted to the route name and the locale given. |
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| 421 | * |
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| 422 | * @param string|bool $locale |
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| 423 | * @param string $transKey |
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| 424 | * @param array $attributes |
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| 425 | * @param bool|false $showHiddenLocale |
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| 426 | * |
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| 427 | * @return string|false |
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| 428 | */ |
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| 429 | 110 | public function getUrlFromRouteName($locale, $transKey, array $attributes = [], $showHiddenLocale = false) |
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| 447 | |||
| 448 | /** |
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| 449 | * Set route name from request. |
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| 450 | * |
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| 451 | * @param \Illuminate\Http\Request $request |
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| 452 | */ |
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| 453 | 2 | public function setRouteNameFromRequest(Request $request) |
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| 461 | |||
| 462 | /* ----------------------------------------------------------------- |
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| 463 | | Check Methods |
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| 464 | | ----------------------------------------------------------------- |
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| 465 | */ |
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| 466 | |||
| 467 | /** |
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| 468 | * Hide the default locale in URL ?? |
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| 469 | * |
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| 470 | * @return bool |
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| 471 | */ |
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| 472 | 108 | public function isDefaultLocaleHiddenInUrl() |
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| 476 | |||
| 477 | /** |
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| 478 | * Check if Locale exists on the supported locales collection. |
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| 479 | * |
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| 480 | * @param string|bool $locale |
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| 481 | * |
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| 482 | * @return bool |
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| 483 | */ |
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| 484 | 112 | public function isLocaleSupported($locale) |
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| 488 | |||
| 489 | /** |
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| 490 | * Check if the locale is supported or fail if not. |
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| 491 | * |
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| 492 | * @param string $locale |
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| 493 | * |
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| 494 | * @throws \Arcanedev\Localization\Exceptions\UnsupportedLocaleException |
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| 495 | */ |
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| 496 | 112 | private function isLocaleSupportedOrFail($locale): void |
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| 503 | } |
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| 504 |