| Total Complexity | 40 | 
| Total Lines | 327 | 
| Duplicated Lines | 0 % | 
| Changes | 6 | ||
| Bugs | 0 | 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 = self::DEFAULT_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 $casting = [ | ||
| 85 | // related colours | ||
| 86 | 'Readablecolour' => 'Varchar', | ||
| 87 | 'RelatedColourByName' => 'Varchar', | ||
| 88 | 'Inverted' => 'Varchar', | ||
| 89 | // css | ||
| 90 | 'CssVariableDefinition' => 'Varchar', | ||
| 91 | 'CssClass' => 'Varchar', | ||
| 92 | 'CssClassAlternative' => 'Boolean', | ||
| 93 | // booleans | ||
| 94 | 'IsDarkColour' => 'Boolean', | ||
| 95 | 'IsLightColour' => 'Boolean', | ||
| 96 | ]; | ||
| 97 | |||
| 98 | |||
| 99 | public function __construct($name = null, $options = []) | ||
| 100 |     { | ||
| 101 | parent::__construct($name, $options); | ||
| 102 | } | ||
| 103 | |||
| 104 | |||
| 105 | public static function my_colours(): array | ||
| 106 |     { | ||
| 107 | return self::get_colour_as_db_field(DBColour::class)->getColours(); | ||
| 108 | } | ||
| 109 | |||
| 110 | public static function get_swatches_field(string $name, string $value): LiteralField | ||
| 111 |     { | ||
| 112 | return SelectedColourPickerFormFieldSwatches::get_swatches_field( | ||
| 113 | (string) $name, | ||
| 114 | (string) $value, | ||
| 115 | self::my_colours(), | ||
| 116 | static::IS_BG_COLOUR | ||
| 117 | ); | ||
| 118 | } | ||
| 119 | |||
| 120 | /** | ||
| 121 | * | ||
| 122 | * @param string $name | ||
| 123 | * @param string $title | ||
| 124 | * @return FormField | ||
| 125 | */ | ||
| 126 | public static function get_dropdown_field(string $name, ?string $title = '', ?bool $isBackgroundColour = null) | ||
| 127 |     { | ||
| 128 |         if($isBackgroundColour === null) { | ||
| 129 | $isBackgroundColour = static::IS_BG_COLOUR; | ||
| 130 | } | ||
| 131 | $className = Config::inst()->get(static::class, 'colour_picker_field_class_name'); | ||
| 132 | return $className::create( | ||
| 133 | $name, | ||
| 134 | $title | ||
| 135 | ) | ||
| 136 | ->setSource(self::my_colours()) | ||
| 137 | ->setLimitedToOptions(static::IS_LIMITED_TO_OPTIONS) | ||
| 138 | ->setIsBgColour($isBackgroundColour); | ||
| 139 | ; | ||
| 140 | } | ||
| 141 | |||
| 142 | |||
| 143 | public static function get_colours_for_dropdown(?bool $isBackgroundColour = null): ?array | ||
| 144 |     { | ||
| 145 |         if($isBackgroundColour === null) { | ||
| 146 | $isBackgroundColour = static::IS_BG_COLOUR; | ||
| 147 | } | ||
| 148 | $colours = self::my_colours(); | ||
| 149 |         if (!empty($colours)) { | ||
| 150 | $array = []; | ||
| 151 | |||
| 152 |             foreach ($colours as $code => $label) { | ||
| 153 | $textcolour = self::get_font_colour($code) ; | ||
| 154 |                 if($isBackgroundColour) { | ||
| 155 | $array[$code] = [ | ||
| 156 | 'label' => $label, | ||
| 157 | 'background_css' => $code, | ||
| 158 | 'colour_css' => $textcolour, | ||
| 159 | 'sample_text' => 'Aa', | ||
| 160 | ]; | ||
| 161 | |||
| 162 |                 } else { | ||
| 163 | $array[$code] = [ | ||
| 164 | 'label' => $label, | ||
| 165 | 'background_css' => $textcolour, | ||
| 166 | 'colour_css' => $code, | ||
| 167 | 'sample_text' => 'Aa', | ||
| 168 | ]; | ||
| 169 | } | ||
| 170 | } | ||
| 171 | |||
| 172 | return $array; | ||
| 173 | } | ||
| 174 | return null; | ||
| 175 | } | ||
| 176 | |||
| 177 | |||
| 178 | /** | ||
| 179 | * Detects if the given colour is light | ||
| 180 | * @param string $colour HEX colour code | ||
| 181 | */ | ||
| 182 | public static function get_font_colour(?string $colour = ''): static | ||
| 183 |     { | ||
| 184 | $colour = self::is_light_colour((string) $colour) ? '#000000' : '#ffffff'; | ||
| 185 | return self::get_colour_as_db_field($colour); | ||
| 186 | } | ||
| 187 | |||
| 188 | /** | ||
| 189 | * @param string $colour HEX colour code | ||
| 190 | */ | ||
| 191 | public static function is_dark_colour(?string $colour = ''): bool | ||
| 192 |     { | ||
| 193 | return self::is_light_colour((string) $colour) ? false : true; | ||
| 194 | } | ||
| 195 | |||
| 196 | /** | ||
| 197 | * Detects if the given colour is light | ||
| 198 | * @param string $colour HEX colour code | ||
| 199 | */ | ||
| 200 | public static function is_light_colour(?string $colour = ''): bool | ||
| 201 |     { | ||
| 202 | return self::get_colour_as_db_field($colour) | ||
|  | |||
| 203 | ->Luminance() > 0.5; | ||
| 204 | } | ||
| 205 | |||
| 206 | |||
| 207 | public static function check_colour(?string $colour, ?bool $isBackgroundColour = false): string | ||
| 208 |     { | ||
| 209 | $colour = strtolower($colour); | ||
| 210 |         if($colour === 'transparent') { | ||
| 211 | return 'transparent'; | ||
| 212 | } | ||
| 213 |         if(! strpos($colour, '#')) { | ||
| 214 | $colour = '#' . $colour; | ||
| 215 | } | ||
| 216 |         if(! $colour) { | ||
| 217 |             if($isBackgroundColour) { | ||
| 218 | $colour = '#ffffff'; | ||
| 219 |             } else { | ||
| 220 | $colour = '#000000'; | ||
| 221 | } | ||
| 222 | } | ||
| 223 | return $colour; | ||
| 224 | } | ||
| 225 | |||
| 226 | public function scaffoldFormField($title = null, $params = null) | ||
| 227 |     { | ||
| 228 | return ColorPaletteField::create($this->name, $title, static::get_colours_for_dropdown()); | ||
| 229 | } | ||
| 230 | |||
| 231 | |||
| 232 | public function getReadablecolour(): static | ||
| 236 | } | ||
| 237 | |||
| 238 | public function Inverted(): static | ||
| 239 |     { | ||
| 240 | // Ensure the colour is 6 characters long | ||
| 241 | $colour = str_pad(ltrim($this->value, "#"), 6, '0', STR_PAD_RIGHT); | ||
| 242 | |||
| 243 | // Convert the colour to decimal | ||
| 244 | $colour = hexdec($colour); | ||
| 245 | |||
| 246 | // Invert the colour | ||
| 247 | $colour = 0xFFFFFF - $colour; | ||
| 248 | |||
| 249 | // Convert the colour back to hex | ||
| 250 | $colour = dechex($colour); | ||
| 251 | |||
| 252 | // Ensure the colour is 6 characters long | ||
| 253 | $colour = str_pad($colour, 6, '0', STR_PAD_LEFT); | ||
| 254 | |||
| 255 | return self::get_colour_as_db_field($colour); | ||
| 256 | } | ||
| 257 | |||
| 258 | public function getRelatedColourByName(string $name): static | ||
| 259 |     { | ||
| 260 | $colours = Config::inst()->get(static::class, 'linked_colours'); | ||
| 261 | $colour = $colours($this->value)[$name] ?? 'error'; | ||
| 262 | return self::get_colour_as_db_field($colour); | ||
| 263 | } | ||
| 264 | |||
| 265 | public function getCssVariableDefinition($rootElement = ':root'): string | ||
| 266 |     { | ||
| 267 |         $style = PHP_EOL.$rootElement . '{'; | ||
| 268 | $style .= PHP_EOL. '--colour-' . strtolower($this->getName()) . ': ' . $this->getValue() . ';'; | ||
| 269 |         if(self::IS_BG_COLOUR) { | ||
| 270 | $readableColour = $this->getReadablecolour(); | ||
| 271 | $style .= PHP_EOL. '--colour-font-' . strtolower($readableColour->getName()) . ': ' . $readableColour->getValue() . ';'; | ||
| 272 | } | ||
| 273 | $style = PHP_EOL . '}'; | ||
| 274 | return $style; | ||
| 275 | } | ||
| 276 | |||
| 277 | public function getCssClass(?bool $isTransparent = false): string | ||
| 278 |     { | ||
| 279 | $colours = $this->getColours(); | ||
| 280 |         if($isTransparent) { | ||
| 281 | $name = 'transparent'; | ||
| 282 |         } else { | ||
| 283 | $name = $colours[$this->value] ?? 'colour-error'; | ||
| 284 | } | ||
| 285 | |||
| 286 | return $this->classCleanup($name); | ||
| 287 | } | ||
| 288 | |||
| 289 | |||
| 290 | public function getCssClassAlternative(?bool $isTransparent = false): string | ||
| 291 |     { | ||
| 292 |         if($isTransparent) { | ||
| 293 | $name = 'ffffff00'; | ||
| 294 |         } else { | ||
| 295 | $name = $this->value ?: 'no-colour'; | ||
| 296 | } | ||
| 297 | return $this->classCleanup($name); | ||
| 298 | } | ||
| 299 | |||
| 300 | public function getIsLightColour(): bool | ||
| 301 |     { | ||
| 302 | return self::is_light_colour($this->value); | ||
| 303 | } | ||
| 304 | |||
| 305 | public function getIsDarkColour(): bool | ||
| 308 | } | ||
| 309 | |||
| 310 | private function classCleanup(string $name): string | ||
| 311 |     { | ||
| 312 |         $name = str_replace('#', '', $name); | ||
| 313 |         $name = preg_replace('#[^A-Za-z0-9]#', '-', $name); | ||
| 314 | |||
| 315 | return static::CSS_CLASS_PREFIX . '-' . trim(trim(strtolower($name), '-')); | ||
| 316 | } | ||
| 317 | |||
| 318 | |||
| 319 | |||
| 320 | |||
| 321 | protected function getColours(): array | ||
| 322 |     { | ||
| 323 |         return $this->Config()->get('colours'); | ||
| 324 | } | ||
| 325 | |||
| 326 | protected function getMyColours(): array | ||
| 327 |     { | ||
| 328 | $colours = $this->getColours(); | ||
| 329 | |||
| 330 | return empty($colours) ? self::DEFAULT_COLOURS : $colours; | ||
| 331 | } | ||
| 332 | |||
| 333 | |||
| 334 | protected static $object_cache = []; | ||
| 335 | |||
| 336 | protected static function get_colour_as_db_field(string $colour) | ||
| 342 | } | ||
| 343 | |||
| 344 | |||
| 345 | |||
| 346 | |||
| 348 |