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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Css; |
| 16 | |
| 17 | use ArrayIterator; |
| 18 | use Pop\Color\Color; |
| 19 | use Pop\Color\Color\ColorInterface; |
| 20 | |
| 21 | /** |
| 22 | * Pop CSS selector class |
| 23 | * |
| 24 | * @category Pop |
| 25 | * @package Pop\Css |
| 26 | * @author Nick Sagona, III <nick@popphp.org> |
| 27 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 28 | * @license https://www.popphp.org/license New BSD License |
| 29 | * @version 3.0.0 |
| 30 | */ |
| 31 | class Selector implements \ArrayAccess, \Countable, \IteratorAggregate |
| 32 | { |
| 33 | |
| 34 | /** |
| 35 | * Trait declaration |
| 36 | */ |
| 37 | use CommentTrait; |
| 38 | |
| 39 | /** |
| 40 | * Selector name |
| 41 | * @var ?string |
| 42 | */ |
| 43 | protected ?string $name = null; |
| 44 | |
| 45 | /** |
| 46 | * Properties |
| 47 | * @var array |
| 48 | */ |
| 49 | protected array $properties = []; |
| 50 | |
| 51 | /** |
| 52 | * Tab size |
| 53 | * @var int |
| 54 | */ |
| 55 | protected int $tabSize = 4; |
| 56 | |
| 57 | /** |
| 58 | * Is ID selector flag |
| 59 | * @var bool |
| 60 | */ |
| 61 | protected bool $isId = false; |
| 62 | |
| 63 | /** |
| 64 | * Is class selector flag |
| 65 | * @var bool |
| 66 | */ |
| 67 | protected bool $isClass = false; |
| 68 | |
| 69 | /** |
| 70 | * Minify flag |
| 71 | * @var bool |
| 72 | */ |
| 73 | protected bool $minify = false; |
| 74 | |
| 75 | /** |
| 76 | * Constructor |
| 77 | * |
| 78 | * Instantiate the CSS selector object |
| 79 | * |
| 80 | * @param ?string $name |
| 81 | * @param int $tabSize |
| 82 | */ |
| 83 | public function __construct(?string $name = null, int $tabSize = 4) |
| 84 | { |
| 85 | if ($name !== null) { |
| 86 | $this->setName($name); |
| 87 | } |
| 88 | $this->setTabSize($tabSize); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Set name |
| 93 | * |
| 94 | * @param string $name |
| 95 | * @return Selector |
| 96 | */ |
| 97 | public function setName(string $name): Selector |
| 98 | { |
| 99 | if (str_contains($name, '.')) { |
| 100 | $this->isClass = true; |
| 101 | } |
| 102 | if (str_contains($name, '#')) { |
| 103 | $this->isId = true; |
| 104 | } |
| 105 | $this->name = $name; |
| 106 | return $this; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Get name |
| 111 | * |
| 112 | * @return string|null |
| 113 | */ |
| 114 | public function getName(): string|null |
| 115 | { |
| 116 | return $this->name; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Check if is element selector |
| 121 | * |
| 122 | * @return bool |
| 123 | */ |
| 124 | public function isElementSelector(): bool |
| 125 | { |
| 126 | return (!($this->isId) && !($this->isClass)); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Check if is ID selector |
| 131 | * |
| 132 | * @return bool |
| 133 | */ |
| 134 | public function isIdSelector(): bool |
| 135 | { |
| 136 | return $this->isId; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Check if is class selector |
| 141 | * |
| 142 | * @return bool |
| 143 | */ |
| 144 | public function isClassSelector(): bool |
| 145 | { |
| 146 | return $this->isClass; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Check if is multiple selector |
| 151 | * |
| 152 | * @return bool |
| 153 | */ |
| 154 | public function isMultipleSelector(): bool |
| 155 | { |
| 156 | return (str_contains($this->name, ',')); |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Check if selector has a descendant |
| 161 | * |
| 162 | * @return bool |
| 163 | */ |
| 164 | public function hasDescendant(): bool |
| 165 | { |
| 166 | return (str_contains($this->name, '>')); |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Set tab size |
| 171 | * |
| 172 | * @param int $tabSize |
| 173 | * @return Selector |
| 174 | */ |
| 175 | public function setTabSize(int $tabSize): Selector |
| 176 | { |
| 177 | $this->tabSize = $tabSize; |
| 178 | return $this; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Get tab size |
| 183 | * |
| 184 | * @return int |
| 185 | */ |
| 186 | public function getTabSize(): int |
| 187 | { |
| 188 | return $this->tabSize; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Set property |
| 193 | * |
| 194 | * @param string $property |
| 195 | * @param string|int|float|ColorInterface $value |
| 196 | * @return Selector |
| 197 | */ |
| 198 | public function setProperty(string $property, string|int|float|ColorInterface $value): Selector |
| 199 | { |
| 200 | $this->properties[$property] = ($value instanceof ColorInterface) ? $value->render('CSS') : (string)$value; |
| 201 | return $this; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Set properties |
| 206 | * |
| 207 | * @param array $properties |
| 208 | * @return Selector |
| 209 | */ |
| 210 | public function setProperties(array $properties): Selector |
| 211 | { |
| 212 | foreach ($properties as $property => $value) { |
| 213 | $this->setProperty($property, $value); |
| 214 | } |
| 215 | return $this; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Check if selector has property |
| 220 | * |
| 221 | * @param string $property |
| 222 | * @return bool |
| 223 | */ |
| 224 | public function hasProperty(string $property): bool |
| 225 | { |
| 226 | return isset($this->properties[$property]); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Get properties |
| 231 | * |
| 232 | * @return array |
| 233 | */ |
| 234 | public function getProperties(): array |
| 235 | { |
| 236 | return $this->properties; |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * Get property |
| 241 | * |
| 242 | * @param string $property |
| 243 | * @return string|null |
| 244 | */ |
| 245 | public function getProperty(string $property): string|null |
| 246 | { |
| 247 | return $this->properties[$property] ?? null; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Get property as a color object |
| 252 | * |
| 253 | * @param string $property |
| 254 | * @return ColorInterface|null |
| 255 | */ |
| 256 | public function getColorProperty(string $property): ColorInterface|null |
| 257 | { |
| 258 | if (!isset($this->properties[$property])) { |
| 259 | return null; |
| 260 | } |
| 261 | |
| 262 | try { |
| 263 | return Color::parse($this->properties[$property]); |
| 264 | } catch (\Throwable) { |
| 265 | return null; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Remove property |
| 271 | * |
| 272 | * @param string $property |
| 273 | * @return Selector |
| 274 | */ |
| 275 | public function removeProperty(string $property): Selector |
| 276 | { |
| 277 | if (isset($this->properties[$property])) { |
| 278 | unset($this->properties[$property]); |
| 279 | } |
| 280 | return $this; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Set minify flag |
| 285 | * |
| 286 | * @param bool $minify |
| 287 | * @return Selector |
| 288 | */ |
| 289 | public function minify(bool $minify = true): Selector |
| 290 | { |
| 291 | $this->minify = $minify; |
| 292 | return $this; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Check if minify flag is set |
| 297 | * |
| 298 | * @return bool |
| 299 | */ |
| 300 | public function isMinified(): bool |
| 301 | { |
| 302 | return $this->minify; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Method to iterate over the properties |
| 307 | * |
| 308 | * @return ArrayIterator |
| 309 | */ |
| 310 | public function getIterator(): ArrayIterator |
| 311 | { |
| 312 | return new ArrayIterator($this->properties); |
| 313 | } |
| 314 | |
| 315 | /** |
| 316 | * Method to get the count of properties |
| 317 | * |
| 318 | * @return int |
| 319 | */ |
| 320 | public function count(): int |
| 321 | { |
| 322 | return count($this->properties); |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Method to render the selector CSS |
| 327 | * |
| 328 | * @return string |
| 329 | */ |
| 330 | public function render(): string |
| 331 | { |
| 332 | $css = ''; |
| 333 | |
| 334 | if (!$this->minify) { |
| 335 | foreach ($this->comments as $comment) { |
| 336 | $css .= (string)$comment . PHP_EOL; |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | if (!$this->minify) { |
| 341 | $css .= $this->name . ' {' . PHP_EOL; |
| 342 | |
| 343 | foreach ($this->properties as $property => $value) { |
| 344 | $css .= str_repeat(' ', $this->tabSize) . $property . ': ' . $value . ';' . PHP_EOL; |
| 345 | } |
| 346 | |
| 347 | $css .= '}' . PHP_EOL; |
| 348 | } else { |
| 349 | $css .= $this->name . '{'; |
| 350 | foreach ($this->properties as $property => $value) { |
| 351 | $css .= $property . ':' . $value . ';'; |
| 352 | } |
| 353 | |
| 354 | $css .= '}'; |
| 355 | } |
| 356 | |
| 357 | return $css; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * To string method |
| 362 | * |
| 363 | * @return string |
| 364 | */ |
| 365 | public function __toString(): string |
| 366 | { |
| 367 | return $this->render(); |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Magic method to set the property to the value of $this->properties[$name] |
| 372 | * |
| 373 | * @param string $name |
| 374 | * @param mixed $value |
| 375 | * @return void |
| 376 | */ |
| 377 | public function __set(string $name, mixed $value): void |
| 378 | { |
| 379 | $this->properties[$name] = ($value instanceof ColorInterface) ? $value->render('CSS') : (string)$value; |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Magic method to return the value of $this->properties[$name] |
| 384 | * |
| 385 | * @param string $name |
| 386 | * @return mixed |
| 387 | */ |
| 388 | public function __get(string $name): mixed |
| 389 | { |
| 390 | foreach (['margin', 'padding'] as $shorthand) { |
| 391 | if (str_contains($name, $shorthand . '-') && !isset($this->properties[$name]) && isset($this->properties[$shorthand])) { |
| 392 | return $this->resolveShorthandValue($shorthand, substr($name, strpos($name, '-') + 1)); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | return $this->properties[$name] ?? null; |
| 397 | } |
| 398 | |
| 399 | /** |
| 400 | * Resolve a longhand value (e.g. margin-top) from a margin/padding shorthand property, |
| 401 | * per the 1/2/3/4-value CSS shorthand rules |
| 402 | * |
| 403 | * @param string $shorthand |
| 404 | * @param string $position |
| 405 | * @return string|null |
| 406 | */ |
| 407 | protected function resolveShorthandValue(string $shorthand, string $position): string|null |
| 408 | { |
| 409 | $values = explode(' ', $this->properties[$shorthand]); |
| 410 | |
| 411 | $positionValues = match (count($values)) { |
| 412 | 4 => ['top' => $values[0], 'right' => $values[1], 'bottom' => $values[2], 'left' => $values[3]], |
| 413 | 3 => ['top' => $values[0], 'right' => $values[1], 'bottom' => $values[2], 'left' => $values[1]], |
| 414 | 2 => ['top' => $values[0], 'right' => $values[1], 'bottom' => $values[0], 'left' => $values[1]], |
| 415 | 1 => ['top' => $values[0], 'right' => $values[0], 'bottom' => $values[0], 'left' => $values[0]], |
| 416 | default => ['top' => null, 'right' => null, 'bottom' => null, 'left' => null], |
| 417 | }; |
| 418 | |
| 419 | return $positionValues[$position] ?? null; |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Magic method to return the isset value of $this->properties[$name] |
| 424 | * |
| 425 | * @param string $name |
| 426 | * @return bool |
| 427 | */ |
| 428 | public function __isset(string $name): bool |
| 429 | { |
| 430 | if (isset($this->properties[$name])) { |
| 431 | return true; |
| 432 | } |
| 433 | |
| 434 | foreach (['margin', 'padding'] as $shorthand) { |
| 435 | if (str_starts_with($name, $shorthand . '-') && isset($this->properties[$shorthand])) { |
| 436 | $position = substr($name, strlen($shorthand) + 1); |
| 437 | if (in_array($position, ['top', 'right', 'bottom', 'left'], true)) { |
| 438 | return true; |
| 439 | } |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | return false; |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * Magic method to unset $this->properties[$name] |
| 448 | * |
| 449 | * @param string $name |
| 450 | * @return void |
| 451 | */ |
| 452 | public function __unset(string $name): void |
| 453 | { |
| 454 | if (isset($this->properties[$name])) { |
| 455 | unset($this->properties[$name]); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * ArrayAccess offsetExists |
| 461 | * |
| 462 | * @param mixed $offset |
| 463 | * @return bool |
| 464 | */ |
| 465 | public function offsetExists(mixed $offset): bool |
| 466 | { |
| 467 | return $this->__isset($offset); |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * ArrayAccess offsetGet |
| 472 | * |
| 473 | * @param mixed $offset |
| 474 | * @return mixed |
| 475 | */ |
| 476 | public function offsetGet(mixed $offset): mixed |
| 477 | { |
| 478 | return $this->__get($offset); |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * ArrayAccess offsetSet |
| 483 | * |
| 484 | * @param mixed $offset |
| 485 | * @param mixed $value |
| 486 | * @return void |
| 487 | */ |
| 488 | public function offsetSet(mixed $offset, mixed $value): void |
| 489 | { |
| 490 | $this->__set($offset, $value); |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * ArrayAccess offsetUnset |
| 495 | * |
| 496 | * @param mixed $offset |
| 497 | * @return void |
| 498 | */ |
| 499 | public function offsetUnset(mixed $offset): void |
| 500 | { |
| 501 | $this->__unset($offset); |
| 502 | } |
| 503 | |
| 504 | } |