| Total Complexity | 51 | 
| Total Lines | 396 | 
| Duplicated Lines | 0 % | 
| Changes | 11 | ||
| Bugs | 1 | Features | 0 | 
Complex classes like DBColour 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.
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 DBColour, and based on these observations, apply Extract Interface, too.
| 1 | <?php | ||
| 15 | class DBColour extends Color | ||
| 16 | { | ||
| 17 | private static $colour_picker_field_class_name = SelectedColourPickerFormFieldDropdown::class; | ||
| 18 | |||
| 19 | /** | ||
| 20 | * please set | ||
| 21 | * must be defined as #AABB99 (hex codes). | ||
| 22 | * Needs to be set like this: | ||
| 23 | * ```php | ||
| 24 | * [ | ||
| 25 | * '#fff000' => 'My Colour 1', | ||
| 26 | * '#fff000' => 'My Colour 2', | ||
| 27 | * ] | ||
| 28 | * | ||
| 29 | * ``` | ||
| 30 | * | ||
| 31 | * @var array | ||
| 32 | */ | ||
| 33 | private static $colours = []; | ||
| 34 | |||
| 35 | /** | ||
| 36 | * You can link colours to other colours. | ||
| 37 | * e.g. | ||
| 38 | * ```php | ||
| 39 | * '#ffffff' => [ | ||
| 40 | * 'link' => '#000000', | ||
| 41 | * 'foreground' => '#000000', | ||
| 42 | * 'background' => '#000000', | ||
| 43 | * ], | ||
| 44 | * '#aabbcc' => [ | ||
| 45 | * 'link' => '#123123', | ||
| 46 | * 'foreground' => '#123312', | ||
| 47 | * 'somethingelse' => '#000000', | ||
| 48 | * ], | ||
| 49 | * ``` | ||
| 50 | * | ||
| 51 | * @var array | ||
| 52 | */ | ||
| 53 | |||
| 54 | private static $linked_colours = [ | ||
| 55 | ]; | ||
| 56 | |||
| 57 | protected const DEFAULT_COLOURS = [ | ||
| 58 | '#FF0000' => 'Red', | ||
| 59 | '#0000FF' => 'Blue', | ||
| 60 | '#00FF00' => 'Green', | ||
| 61 | ]; | ||
| 62 | |||
| 63 | /** | ||
| 64 | * please set. | ||
| 65 | * | ||
| 66 | * @var string` | ||
| 67 | */ | ||
| 68 | protected const CSS_CLASS_PREFIX = 'db-colour'; | ||
| 69 | |||
| 70 | /** | ||
| 71 | * please set. | ||
| 72 | * | ||
| 73 | * @var bool | ||
| 74 | */ | ||
| 75 | protected const IS_LIMITED_TO_OPTIONS = true; | ||
| 76 | |||
| 77 | /** | ||
| 78 | * please set. | ||
| 79 | * | ||
| 80 | * @var bool | ||
| 81 | */ | ||
| 82 | protected const IS_BG_COLOUR = true; | ||
| 83 | |||
| 84 | private static $casting = [ | ||
| 85 | // related colours | ||
| 86 | 'ReadableColour' => 'Varchar', | ||
| 87 | 'RelatedColourByName' => 'Varchar', | ||
| 88 | 'Inverted' => 'Varchar', | ||
| 89 | // css | ||
| 90 | 'CssVariableDefinition' => 'HTMLText', | ||
| 91 | 'CssClass' => 'Varchar', | ||
| 92 | 'CssClassAlternative' => 'Boolean', | ||
| 93 | // booleans | ||
| 94 | 'IsDarkColour' => 'Boolean', | ||
| 95 | 'IsLightColour' => 'Boolean', | ||
| 96 | 'Nice' => 'HTMLText', | ||
| 97 | ]; | ||
| 98 | |||
| 99 | |||
| 100 | public function __construct($name = null, $options = []) | ||
| 101 |     { | ||
| 102 | parent::__construct($name, $options); | ||
| 103 | } | ||
| 104 | |||
| 105 | |||
| 106 | public static function my_colours(): array | ||
| 107 |     { | ||
| 108 |         return static::get_colour_as_db_field('')->getColours(); | ||
| 109 | } | ||
| 110 | |||
| 111 | public static function get_swatches_field(string $name, string $value): LiteralField | ||
| 112 |     { | ||
| 113 | return SelectedColourPickerFormFieldSwatches::get_swatches_field( | ||
| 114 | (string) $name, | ||
| 115 | (string) $value, | ||
| 116 | static::my_colours(), | ||
| 117 | static::IS_BG_COLOUR | ||
| 118 | ); | ||
| 119 | } | ||
| 120 | |||
| 121 | /** | ||
| 122 | * | ||
| 123 | * @param string $name | ||
| 124 | * @param string $title | ||
| 125 | * @return FormField | ||
| 126 | */ | ||
| 127 | public static function get_dropdown_field(string $name, ?string $title = '', ?bool $isBackgroundColour = null) | ||
| 128 |     { | ||
| 129 |         if($isBackgroundColour === null) { | ||
| 130 | $isBackgroundColour = static::IS_BG_COLOUR; | ||
| 131 | } | ||
| 132 | $className = Config::inst()->get(static::class, 'colour_picker_field_class_name'); | ||
| 133 | return $className::create( | ||
| 134 | $name, | ||
| 135 | $title | ||
| 136 | ) | ||
| 137 | ->setSource(static::my_colours()) | ||
| 138 | ->setLimitedToOptions(static::IS_LIMITED_TO_OPTIONS) | ||
| 139 | ->setIsBgColour($isBackgroundColour); | ||
| 140 | ; | ||
| 141 | } | ||
| 142 | |||
| 143 | |||
| 144 | public static function get_colours_for_dropdown(?bool $isBackgroundColour = null): ?array | ||
| 145 |     { | ||
| 146 |         if($isBackgroundColour === null) { | ||
| 147 | $isBackgroundColour = static::IS_BG_COLOUR; | ||
| 148 | } | ||
| 149 | $colours = static::my_colours(); | ||
| 150 |         if (!empty($colours)) { | ||
| 151 | $array = []; | ||
| 152 | |||
| 153 |             foreach ($colours as $code => $label) { | ||
| 154 | $textcolour = static::get_font_colour((string) $code) ; | ||
| 155 |                 if($isBackgroundColour) { | ||
| 156 | $array[$code] = [ | ||
| 157 | 'label' => $label, | ||
| 158 | 'background_css' => $code, | ||
| 159 | 'colour_css' => $textcolour, | ||
| 160 | 'sample_text' => 'Aa', | ||
| 161 | ]; | ||
| 162 | |||
| 163 |                 } else { | ||
| 164 | $array[$code] = [ | ||
| 165 | 'label' => $label, | ||
| 166 | 'background_css' => $textcolour, | ||
| 167 | 'colour_css' => $code, | ||
| 168 | 'sample_text' => 'Aa', | ||
| 169 | ]; | ||
| 170 | } | ||
| 171 | } | ||
| 172 | |||
| 173 | return $array; | ||
| 174 | } | ||
| 175 | return null; | ||
| 176 | } | ||
| 177 | |||
| 178 | |||
| 179 | /** | ||
| 180 | * Detects if the given colour is light | ||
| 181 | * @param string $colour HEX colour code | ||
| 182 | */ | ||
| 183 | public static function get_font_colour(?string $colour = null, ?string $name = '') | ||
| 184 |     { | ||
| 185 |         if(! $colour) { | ||
| 186 | $colour = '#ffffff'; | ||
| 187 | } | ||
| 188 | $colour = static::is_light_colour((string) $colour) ? '#000000' : '#ffffff'; | ||
| 189 | return static::get_colour_as_db_field($colour, $name); | ||
| 190 | } | ||
| 191 | |||
| 192 | /** | ||
| 193 | * @param string $colour HEX colour code | ||
| 194 | */ | ||
| 195 | public static function is_dark_colour(?string $colour = ''): bool | ||
| 196 |     { | ||
| 197 | return static::is_light_colour((string) $colour) ? false : true; | ||
| 198 | } | ||
| 199 | |||
| 200 | /** | ||
| 201 | * Detects if the given colour is light | ||
| 202 | * @param string $colour HEX colour code | ||
| 203 | */ | ||
| 204 | public static function is_light_colour(?string $colour = ''): bool | ||
| 205 |     { | ||
| 206 | return static::get_colour_as_db_field($colour) | ||
|  | |||
| 207 | ->Luminance() > 0.5; | ||
| 208 | } | ||
| 209 | |||
| 210 | |||
| 211 | public static function check_colour(?string $colour, ?bool $isBackgroundColour = false): string | ||
| 212 |     { | ||
| 213 | $colour = strtolower($colour); | ||
| 214 |         if($colour === 'transparent') { | ||
| 215 | return 'transparent'; | ||
| 216 | } | ||
| 217 |         if(! strpos($colour, '#')) { | ||
| 218 | $colour = '#' . $colour; | ||
| 219 | } | ||
| 220 |         if(! $colour) { | ||
| 221 |             if($isBackgroundColour) { | ||
| 222 | $colour = '#ffffff'; | ||
| 223 |             } else { | ||
| 224 | $colour = '#000000'; | ||
| 225 | } | ||
| 226 | } | ||
| 227 | return $colour; | ||
| 228 | } | ||
| 229 | |||
| 230 | public function scaffoldFormField($title = null, $params = null) | ||
| 231 |     { | ||
| 232 | return ColorPaletteField::create($this->name, $title, static::get_colours_for_dropdown()); | ||
| 233 | } | ||
| 234 | |||
| 235 | |||
| 236 | public function getReadableColour(): static | ||
| 237 |     { | ||
| 238 | // Remove '#' if it's present | ||
| 239 | return static::get_font_colour((string) $this->value, $this->name); | ||
| 240 | } | ||
| 241 | |||
| 242 | public function Inverted(): static | ||
| 243 |     { | ||
| 244 | // Ensure the colour is 6 characters long | ||
| 245 | $colour = str_pad(ltrim($this->value, "#"), 6, '0', STR_PAD_RIGHT); | ||
| 246 | |||
| 247 | // Convert the colour to decimal | ||
| 248 | $colour = hexdec($colour); | ||
| 249 | |||
| 250 | // Invert the colour | ||
| 251 | $colour = 0xFFFFFF - $colour; | ||
| 252 | |||
| 253 | // Convert the colour back to hex | ||
| 254 | $colour = dechex($colour); | ||
| 255 | |||
| 256 | // Ensure the colour is 6 characters long | ||
| 257 | $colour = str_pad($colour, 6, '0', STR_PAD_LEFT); | ||
| 258 | |||
| 259 | return static::get_colour_as_db_field($colour, $this->name); | ||
| 260 | } | ||
| 261 | |||
| 262 | public function getRelatedColourByName(string $relatedName): static | ||
| 263 |     { | ||
| 264 | $relatedColours = $this->getRelatedColours($this->value); | ||
| 265 | $colour = $relatedColours[$relatedName] ?? 'error'; | ||
| 266 | return static::get_colour_as_db_field($colour, $this->name); | ||
| 267 | } | ||
| 268 | |||
| 269 | |||
| 270 | public function getCssVariableDefinition($rootElement = ':root'): string | ||
| 271 |     { | ||
| 272 | $style = PHP_EOL . '<style>'; | ||
| 273 | $style .= PHP_EOL.$rootElement; | ||
| 274 |         $style .= PHP_EOL. '{'; | ||
| 275 | $style .= $this->getCssVarLine(); | ||
| 276 |         if(static::IS_BG_COLOUR) { | ||
| 277 | $readableColourObj = $this->getReadableColour(); | ||
| 278 |             $style .= $readableColourObj->getCssVarLine('font'); | ||
| 279 | } | ||
| 280 |         foreach($this->getRelatedColours() as $name => $relatedColour) { | ||
| 281 | $relatedColourObj = self::get_colour_as_db_field($relatedColour, $this->name); | ||
| 282 | $style .= $relatedColourObj->getCssVarLine($name); | ||
| 283 | $relatedColourObjReadable = $relatedColourObj->getReadableColour(); | ||
| 284 | $style .= $relatedColourObjReadable->getCssVarLine($name.'-font'); | ||
| 285 | } | ||
| 286 | $style .= PHP_EOL . '}'; | ||
| 287 | $style .= PHP_EOL . '</style>'; | ||
| 288 | |||
| 289 | return $style; | ||
| 290 | } | ||
| 291 | |||
| 292 | public function getCssVarLine($name = ''): string | ||
| 293 |     { | ||
| 294 | $start = ' --colour'; | ||
| 295 |         if($name) { | ||
| 296 | $start .= '-' . strtolower($name); | ||
| 297 | } | ||
| 298 | return PHP_EOL. $start.'-' . strtolower($this->getName()) . ': ' . $this->getValue() . ';'; | ||
| 299 | } | ||
| 300 | |||
| 301 | public function getCssClass(?bool $isTransparent = false): string | ||
| 311 | } | ||
| 312 | |||
| 313 | |||
| 314 | public function getCssClassAlternative(?bool $isTransparent = false): string | ||
| 315 |     { | ||
| 316 |         if($isTransparent) { | ||
| 317 | $name = 'ffffff00'; | ||
| 318 |         } else { | ||
| 319 | $name = $this->value ?: 'no-colour'; | ||
| 320 | } | ||
| 321 | return $this->classCleanup($name); | ||
| 322 | } | ||
| 323 | |||
| 324 | public function getIsLightColour(): bool | ||
| 327 | } | ||
| 328 | |||
| 329 | public function getNice() | ||
| 330 |     { | ||
| 331 | $html = ' | ||
| 332 | <div | ||
| 333 | style=" | ||
| 334 | width: 40px; | ||
| 335 | height: 40px; | ||
| 336 | border-radius: 40px; | ||
| 337 | background-color: ' . $this->getBackgroundColour() . '!important; | ||
| 338 | color: '.$this->getFontColour().'!important; | ||
| 339 | border: 1px solid '.$this->getFontColour().'!important; | ||
| 340 | text-align: center; | ||
| 341 | display: table-cell; | ||
| 342 | display: flex; | ||
| 343 | flex-direction: column; | ||
| 344 | justify-content: center; | ||
| 345 | " | ||
| 346 | >Aa</div> '; | ||
| 347 |         return DBField::create_field('HTMLText', $html); | ||
| 348 | } | ||
| 349 | |||
| 350 | public function getIsDarkColour(): bool | ||
| 353 | } | ||
| 354 | |||
| 355 | private function classCleanup(string $name): string | ||
| 356 |     { | ||
| 357 |         $name = str_replace('#', '', $name); | ||
| 358 |         $name = preg_replace('#[^A-Za-z0-9]#', '-', $name); | ||
| 359 | |||
| 360 | return static::CSS_CLASS_PREFIX . '-' . trim(trim(strtolower($name), '-')); | ||
| 361 | } | ||
| 362 | |||
| 363 | |||
| 364 | |||
| 365 | |||
| 366 | protected function getColours(): array | ||
| 367 |     { | ||
| 368 |         return $this->Config()->get('colours'); | ||
| 369 | } | ||
| 370 | |||
| 371 | protected function getMyColours(): array | ||
| 372 |     { | ||
| 373 | $colours = $this->getColours(); | ||
| 374 | |||
| 375 | return empty($colours) ? static::DEFAULT_COLOURS : $colours; | ||
| 376 | } | ||
| 377 | |||
| 378 | protected function getRelatedColours(): array | ||
| 382 | } | ||
| 383 | |||
| 384 | |||
| 385 | protected static $object_cache = []; | ||
| 386 | |||
| 387 | protected static function get_colour_as_db_field(string $colour, ?string $name = '') | ||
| 388 |     { | ||
| 389 | $cacheKey = $colour . '_'. $name . '_'. static::class; | ||
| 390 |         if(!$colour || ! isset(static::$object_cache[$cacheKey])) { | ||
| 391 | static::$object_cache[$cacheKey] = DBField::create_field(static::class, $colour, $name); | ||
| 392 | } | ||
| 393 | return static::$object_cache[$cacheKey]; | ||
| 394 | } | ||
| 395 | |||
| 396 | public function getFontColour(): string | ||
| 397 |     { | ||
| 398 |         if(self::IS_BG_COLOUR) { | ||
| 399 | return (string) self::get_font_colour($this->value); | ||
| 400 |         } else { | ||
| 401 | return (string) $this->value; | ||
| 402 | } | ||
| 403 | } | ||
| 404 | |||
| 405 | public function getBackgroundColour(): string | ||
| 411 | } | ||
| 412 | } | ||
| 413 | |||
| 414 | |||
| 415 | } | ||
| 416 |