| 1 |
<?php |
| 2 |
/** |
| 3 |
* Process of structures that adhere to the theme.json schema. |
| 4 |
* |
| 5 |
* @package gutenberg |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Class that encapsulates the processing of |
| 10 |
* structures that adhere to the theme.json spec. |
| 11 |
*/ |
| 12 |
class WP_Theme_JSON { |
| 13 |
|
| 14 |
/** |
| 15 |
* Container of data in theme.json format. |
| 16 |
* |
| 17 |
* @var array |
| 18 |
*/ |
| 19 |
private $contexts = null; |
| 20 |
|
| 21 |
/** |
| 22 |
* Holds block metadata extracted from block.json |
| 23 |
* to be shared among all instances so we don't |
| 24 |
* process it twice. |
| 25 |
* |
| 26 |
* @var array |
| 27 |
*/ |
| 28 |
private static $blocks_metadata = null; |
| 29 |
|
| 30 |
/** |
| 31 |
* The name of the global context. |
| 32 |
* |
| 33 |
* @var string |
| 34 |
*/ |
| 35 |
const GLOBAL_NAME = 'global'; |
| 36 |
|
| 37 |
/** |
| 38 |
* The CSS selector for the global context. |
| 39 |
* |
| 40 |
* @var string |
| 41 |
*/ |
| 42 |
const GLOBAL_SELECTOR = ':root'; |
| 43 |
|
| 44 |
/** |
| 45 |
* The supported properties of the global context. |
| 46 |
* |
| 47 |
* @var array |
| 48 |
*/ |
| 49 |
const GLOBAL_SUPPORTS = array( |
| 50 |
'--wp--style--color--link', |
| 51 |
'background', |
| 52 |
'backgroundColor', |
| 53 |
'border', |
| 54 |
'color', |
| 55 |
'fontFamily', |
| 56 |
'fontSize', |
| 57 |
'fontStyle', |
| 58 |
'fontWeight', |
| 59 |
'lineHeight', |
| 60 |
'textDecoration', |
| 61 |
'textTransform', |
| 62 |
); |
| 63 |
|
| 64 |
/** |
| 65 |
* Data schema of each context within a theme.json. |
| 66 |
* |
| 67 |
* Example: |
| 68 |
* |
| 69 |
* { |
| 70 |
* 'context-one': { |
| 71 |
* 'styles': { |
| 72 |
* 'color': { |
| 73 |
* 'background': 'color' |
| 74 |
* } |
| 75 |
* }, |
| 76 |
* 'settings': { |
| 77 |
* 'color': { |
| 78 |
* 'custom': true |
| 79 |
* } |
| 80 |
* } |
| 81 |
* }, |
| 82 |
* 'context-two': { |
| 83 |
* 'styles': { |
| 84 |
* 'color': { |
| 85 |
* 'link': 'color' |
| 86 |
* } |
| 87 |
* } |
| 88 |
* } |
| 89 |
* } |
| 90 |
*/ |
| 91 |
const SCHEMA = array( |
| 92 |
'styles' => array( |
| 93 |
'color' => array( |
| 94 |
'background' => null, |
| 95 |
'gradient' => null, |
| 96 |
'link' => null, |
| 97 |
'text' => null, |
| 98 |
), |
| 99 |
'spacing' => array( |
| 100 |
'padding' => array( |
| 101 |
'top' => null, |
| 102 |
'right' => null, |
| 103 |
'bottom' => null, |
| 104 |
'left' => null, |
| 105 |
), |
| 106 |
), |
| 107 |
'typography' => array( |
| 108 |
'fontFamily' => null, |
| 109 |
'fontSize' => null, |
| 110 |
'fontStyle' => null, |
| 111 |
'fontWeight' => null, |
| 112 |
'lineHeight' => null, |
| 113 |
'textDecoration' => null, |
| 114 |
'textTransform' => null, |
| 115 |
), |
| 116 |
), |
| 117 |
'settings' => array( |
| 118 |
'border' => array( |
| 119 |
'customRadius' => null, |
| 120 |
), |
| 121 |
'color' => array( |
| 122 |
'custom' => null, |
| 123 |
'customGradient' => null, |
| 124 |
'gradients' => null, |
| 125 |
'link' => null, |
| 126 |
'palette' => null, |
| 127 |
), |
| 128 |
'spacing' => array( |
| 129 |
'customPadding' => null, |
| 130 |
'units' => null, |
| 131 |
), |
| 132 |
'typography' => array( |
| 133 |
'customFontSize' => null, |
| 134 |
'customLineHeight' => null, |
| 135 |
'dropCap' => null, |
| 136 |
'fontFamilies' => null, |
| 137 |
'fontSizes' => null, |
| 138 |
'customFontStyle' => null, |
| 139 |
'customFontWeight' => null, |
| 140 |
'customTextDecorations' => null, |
| 141 |
'customTextTransforms' => null, |
| 142 |
), |
| 143 |
'custom' => null, |
| 144 |
), |
| 145 |
); |
| 146 |
|
| 147 |
/** |
| 148 |
* Presets are a set of values that serve |
| 149 |
* to bootstrap some styles: colors, font sizes, etc. |
| 150 |
* |
| 151 |
* They are a unkeyed array of values such as: |
| 152 |
* |
| 153 |
* ```php |
| 154 |
* array( |
| 155 |
* array( |
| 156 |
* 'slug' => 'unique-name-within-the-set', |
| 157 |
* 'name' => 'Name for the UI', |
| 158 |
* <value_key> => 'value' |
| 159 |
* ), |
| 160 |
* ) |
| 161 |
* ``` |
| 162 |
* |
| 163 |
* This contains the necessary metadata to process them: |
| 164 |
* |
| 165 |
* - path => where to find the preset in a theme.json context |
| 166 |
* |
| 167 |
* - value_key => the key that represents the value |
| 168 |
* |
| 169 |
* - css_var_infix => infix to use in generating the CSS Custom Property. Example: |
| 170 |
* --wp--preset--<preset_infix>--<slug>: <preset_value> |
| 171 |
* |
| 172 |
* - classes => array containing a structure with the classes to |
| 173 |
* generate for the presets. Each class should have |
| 174 |
* the class suffix and the property name. Example: |
| 175 |
* |
| 176 |
* .has-<slug>-<class_suffix> { |
| 177 |
* <property_name>: <preset_value> |
| 178 |
* } |
| 179 |
*/ |
| 180 |
const PRESETS_METADATA = array( |
| 181 |
array( |
| 182 |
'path' => array( 'settings', 'color', 'palette' ), |
| 183 |
'value_key' => 'color', |
| 184 |
'css_var_infix' => 'color', |
| 185 |
'classes' => array( |
| 186 |
array( |
| 187 |
'class_suffix' => 'color', |
| 188 |
'property_name' => 'color', |
| 189 |
), |
| 190 |
array( |
| 191 |
'class_suffix' => 'background-color', |
| 192 |
'property_name' => 'background-color', |
| 193 |
), |
| 194 |
), |
| 195 |
), |
| 196 |
array( |
| 197 |
'path' => array( 'settings', 'color', 'gradients' ), |
| 198 |
'value_key' => 'gradient', |
| 199 |
'css_var_infix' => 'gradient', |
| 200 |
'classes' => array( |
| 201 |
array( |
| 202 |
'class_suffix' => 'gradient-background', |
| 203 |
'property_name' => 'background', |
| 204 |
), |
| 205 |
), |
| 206 |
), |
| 207 |
array( |
| 208 |
'path' => array( 'settings', 'typography', 'fontSizes' ), |
| 209 |
'value_key' => 'size', |
| 210 |
'css_var_infix' => 'font-size', |
| 211 |
'classes' => array( |
| 212 |
array( |
| 213 |
'class_suffix' => 'font-size', |
| 214 |
'property_name' => 'font-size', |
| 215 |
), |
| 216 |
), |
| 217 |
), |
| 218 |
array( |
| 219 |
'path' => array( 'settings', 'typography', 'fontFamilies' ), |
| 220 |
'value_key' => 'fontFamily', |
| 221 |
'css_var_infix' => 'font-family', |
| 222 |
'classes' => array(), |
| 223 |
), |
| 224 |
); |
| 225 |
|
| 226 |
/** |
| 227 |
* Metadata for style properties. |
| 228 |
* |
| 229 |
* Each property declares: |
| 230 |
* |
| 231 |
* - 'value': path to the value in theme.json and block attributes. |
| 232 |
* - 'support': path to the block support in block.json. |
| 233 |
*/ |
| 234 |
const PROPERTIES_METADATA = array( |
| 235 |
'--wp--style--color--link' => array( |
| 236 |
'value' => array( 'color', 'link' ), |
| 237 |
'support' => array( 'color', 'link' ), |
| 238 |
), |
| 239 |
'background' => array( |
| 240 |
'value' => array( 'color', 'gradient' ), |
| 241 |
'support' => array( 'color', 'gradients' ), |
| 242 |
), |
| 243 |
'backgroundColor' => array( |
| 244 |
'value' => array( 'color', 'background' ), |
| 245 |
'support' => array( 'color' ), |
| 246 |
), |
| 247 |
'borderRadius' => array( |
| 248 |
'value' => array( 'border', 'radius' ), |
| 249 |
'support' => array( '__experimentalBorder' ), |
| 250 |
), |
| 251 |
'color' => array( |
| 252 |
'value' => array( 'color', 'text' ), |
| 253 |
'support' => array( 'color' ), |
| 254 |
), |
| 255 |
'fontFamily' => array( |
| 256 |
'value' => array( 'typography', 'fontFamily' ), |
| 257 |
'support' => array( '__experimentalFontFamily' ), |
| 258 |
), |
| 259 |
'fontSize' => array( |
| 260 |
'value' => array( 'typography', 'fontSize' ), |
| 261 |
'support' => array( 'fontSize' ), |
| 262 |
), |
| 263 |
'fontStyle' => array( |
| 264 |
'value' => array( 'typography', 'fontStyle' ), |
| 265 |
'support' => array( '__experimentalFontStyle' ), |
| 266 |
), |
| 267 |
'fontWeight' => array( |
| 268 |
'value' => array( 'typography', 'fontWeight' ), |
| 269 |
'support' => array( '__experimentalFontWeight' ), |
| 270 |
), |
| 271 |
'lineHeight' => array( |
| 272 |
'value' => array( 'typography', 'lineHeight' ), |
| 273 |
'support' => array( 'lineHeight' ), |
| 274 |
), |
| 275 |
'paddingBottom' => array( |
| 276 |
'value' => array( 'spacing', 'padding', 'bottom' ), |
| 277 |
'support' => array( 'spacing', 'padding' ), |
| 278 |
), |
| 279 |
'paddingLeft' => array( |
| 280 |
'value' => array( 'spacing', 'padding', 'left' ), |
| 281 |
'support' => array( 'spacing', 'padding' ), |
| 282 |
), |
| 283 |
'paddingRight' => array( |
| 284 |
'value' => array( 'spacing', 'padding', 'right' ), |
| 285 |
'support' => array( 'spacing', 'padding' ), |
| 286 |
), |
| 287 |
'paddingTop' => array( |
| 288 |
'value' => array( 'spacing', 'padding', 'top' ), |
| 289 |
'support' => array( 'spacing', 'padding' ), |
| 290 |
), |
| 291 |
'textDecoration' => array( |
| 292 |
'value' => array( 'typography', 'textDecoration' ), |
| 293 |
'support' => array( '__experimentalTextDecoration' ), |
| 294 |
), |
| 295 |
'textTransform' => array( |
| 296 |
'value' => array( 'typography', 'textTransform' ), |
| 297 |
'support' => array( '__experimentalTextTransform' ), |
| 298 |
), |
| 299 |
); |
| 300 |
|
| 301 |
/** |
| 302 |
* Constructor. |
| 303 |
* |
| 304 |
* @param array $contexts A structure that follows the theme.json schema. |
| 305 |
* @param boolean $should_escape_styles Whether the incoming styles should be escaped. |
| 306 |
*/ |
| 307 |
public function __construct( $contexts = array(), $should_escape_styles = false ) { |
| 308 |
$this->contexts = array(); |
| 309 |
|
| 310 |
if ( ! is_array( $contexts ) ) { |
| 311 |
return; |
| 312 |
} |
| 313 |
|
| 314 |
$metadata = $this->get_blocks_metadata(); |
| 315 |
foreach ( $contexts as $key => $context ) { |
| 316 |
if ( ! isset( $metadata[ $key ] ) ) { |
| 317 |
// Skip incoming contexts that can't be found |
| 318 |
// within the contexts registered. |
| 319 |
continue; |
| 320 |
} |
| 321 |
|
| 322 |
// Filter out top-level keys that aren't valid according to the schema. |
| 323 |
$context = array_intersect_key( $context, self::SCHEMA ); |
| 324 |
|
| 325 |
// Process styles subtree. |
| 326 |
$this->process_key( 'styles', $context, self::SCHEMA ); |
| 327 |
if ( isset( $context['styles'] ) ) { |
| 328 |
$this->process_key( 'color', $context['styles'], self::SCHEMA['styles'], $should_escape_styles ); |
| 329 |
$this->process_key( 'spacing', $context['styles'], self::SCHEMA['styles'], $should_escape_styles ); |
| 330 |
$this->process_key( 'typography', $context['styles'], self::SCHEMA['styles'], $should_escape_styles ); |
| 331 |
|
| 332 |
if ( empty( $context['styles'] ) ) { |
| 333 |
unset( $context['styles'] ); |
| 334 |
} else { |
| 335 |
$this->contexts[ $key ]['styles'] = $context['styles']; |
| 336 |
} |
| 337 |
} |
| 338 |
|
| 339 |
// Process settings subtree. |
| 340 |
$this->process_key( 'settings', $context, self::SCHEMA ); |
| 341 |
if ( isset( $context['settings'] ) ) { |
| 342 |
$this->process_key( 'border', $context['settings'], self::SCHEMA['settings'] ); |
| 343 |
$this->process_key( 'color', $context['settings'], self::SCHEMA['settings'] ); |
| 344 |
$this->process_key( 'spacing', $context['settings'], self::SCHEMA['settings'] ); |
| 345 |
$this->process_key( 'typography', $context['settings'], self::SCHEMA['settings'] ); |
| 346 |
|
| 347 |
if ( empty( $context['settings'] ) ) { |
| 348 |
unset( $context['settings'] ); |
| 349 |
} else { |
| 350 |
$this->contexts[ $key ]['settings'] = $context['settings']; |
| 351 |
} |
| 352 |
} |
| 353 |
} |
| 354 |
} |
| 355 |
|
| 356 |
/** |
| 357 |
* Returns the metadata for each block. |
| 358 |
* |
| 359 |
* Example: |
| 360 |
* |
| 361 |
* { |
| 362 |
* 'global': { |
| 363 |
* 'selector': ':root' |
| 364 |
* 'supports': [ 'fontSize', 'backgroundColor' ], |
| 365 |
* }, |
| 366 |
* 'core/heading/h1': { |
| 367 |
* 'selector': 'h1' |
| 368 |
* 'supports': [ 'fontSize', 'backgroundColor' ], |
| 369 |
* } |
| 370 |
* } |
| 371 |
* |
| 372 |
* @return array Block metadata. |
| 373 |
*/ |
| 374 |
private static function get_blocks_metadata() { |
| 375 |
if ( null !== self::$blocks_metadata ) { |
| 376 |
return self::$blocks_metadata; |
| 377 |
} |
| 378 |
|
| 379 |
self::$blocks_metadata = array( |
| 380 |
self::GLOBAL_NAME => array( |
| 381 |
'selector' => self::GLOBAL_SELECTOR, |
| 382 |
'supports' => self::GLOBAL_SUPPORTS, |
| 383 |
), |
| 384 |
); |
| 385 |
|
| 386 |
$registry = WP_Block_Type_Registry::get_instance(); |
| 387 |
$blocks = $registry->get_all_registered(); |
| 388 |
foreach ( $blocks as $block_name => $block_type ) { |
| 389 |
/* |
| 390 |
* Skips blocks that don't declare support, |
| 391 |
* they don't generate styles. |
| 392 |
*/ |
| 393 |
if ( |
| 394 |
! property_exists( $block_type, 'supports' ) || |
| 395 |
! is_array( $block_type->supports ) || |
| 396 |
empty( $block_type->supports ) |
| 397 |
) { |
| 398 |
continue; |
| 399 |
} |
| 400 |
|
| 401 |
/* |
| 402 |
* Extract block support keys that are related to the style properties. |
| 403 |
*/ |
| 404 |
$block_supports = array(); |
| 405 |
foreach ( self::PROPERTIES_METADATA as $key => $metadata ) { |
| 406 |
if ( gutenberg_experimental_get( $block_type->supports, $metadata['support'] ) ) { |
| 407 |
$block_supports[] = $key; |
| 408 |
} |
| 409 |
} |
| 410 |
|
| 411 |
/* |
| 412 |
* Skip blocks that don't support anything related to styles. |
| 413 |
*/ |
| 414 |
if ( empty( $block_supports ) ) { |
| 415 |
continue; |
| 416 |
} |
| 417 |
|
| 418 |
/* |
| 419 |
* Assign the selector for the block. |
| 420 |
* |
| 421 |
* Some blocks can declare multiple selectors: |
| 422 |
* |
| 423 |
* - core/heading represents the H1-H6 HTML elements |
| 424 |
* - core/list represents the UL and OL HTML elements |
| 425 |
* - core/group is meant to represent DIV and other HTML elements |
| 426 |
* |
| 427 |
* Some other blocks don't provide a selector, |
| 428 |
* so we generate a class for them based on their name: |
| 429 |
* |
| 430 |
* - 'core/group' => '.wp-block-group' |
| 431 |
* - 'my-custom-library/block-name' => '.wp-block-my-custom-library-block-name' |
| 432 |
* |
| 433 |
* Note that, for core blocks, we don't add the `core/` prefix to its class name. |
| 434 |
* This is for historical reasons, as they come with a class without that infix. |
| 435 |
* |
| 436 |
*/ |
| 437 |
if ( |
| 438 |
isset( $block_type->supports['__experimentalSelector'] ) && |
| 439 |
is_string( $block_type->supports['__experimentalSelector'] ) |
| 440 |
) { |
| 441 |
self::$blocks_metadata[ $block_name ] = array( |
| 442 |
'selector' => $block_type->supports['__experimentalSelector'], |
| 443 |
'supports' => $block_supports, |
| 444 |
); |
| 445 |
} elseif ( |
| 446 |
isset( $block_type->supports['__experimentalSelector'] ) && |
| 447 |
is_array( $block_type->supports['__experimentalSelector'] ) |
| 448 |
) { |
| 449 |
foreach ( $block_type->supports['__experimentalSelector'] as $key => $selector_metadata ) { |
| 450 |
if ( ! isset( $selector_metadata['selector'] ) ) { |
| 451 |
continue; |
| 452 |
} |
| 453 |
|
| 454 |
self::$blocks_metadata[ $key ] = array( |
| 455 |
'selector' => $selector_metadata['selector'], |
| 456 |
'supports' => $block_supports, |
| 457 |
); |
| 458 |
} |
| 459 |
} else { |
| 460 |
self::$blocks_metadata[ $block_name ] = array( |
| 461 |
'selector' => '.wp-block-' . str_replace( '/', '-', str_replace( 'core/', '', $block_name ) ), |
| 462 |
'supports' => $block_supports, |
| 463 |
); |
| 464 |
} |
| 465 |
} |
| 466 |
|
| 467 |
return self::$blocks_metadata; |
| 468 |
} |
| 469 |
|
| 470 |
/** |
| 471 |
* Normalize the subtree according to the given schema. |
| 472 |
* This function modifies the given input by removing |
| 473 |
* the nodes that aren't valid per the schema. |
| 474 |
* |
| 475 |
* @param string $key Key of the subtree to normalize. |
| 476 |
* @param array $input Whole tree to normalize. |
| 477 |
* @param array $schema Schema to use for normalization. |
| 478 |
* @param boolean $should_escape Whether the subproperties should be escaped. |
| 479 |
*/ |
| 480 |
private static function process_key( $key, &$input, $schema, $should_escape = false ) { |
| 481 |
if ( ! isset( $input[ $key ] ) ) { |
| 482 |
return; |
| 483 |
} |
| 484 |
|
| 485 |
// Consider valid the input value. |
| 486 |
if ( null === $schema[ $key ] ) { |
| 487 |
return; |
| 488 |
} |
| 489 |
|
| 490 |
if ( ! is_array( $input[ $key ] ) ) { |
| 491 |
unset( $input[ $key ] ); |
| 492 |
return; |
| 493 |
} |
| 494 |
|
| 495 |
$input[ $key ] = array_intersect_key( |
| 496 |
$input[ $key ], |
| 497 |
$schema[ $key ] |
| 498 |
); |
| 499 |
|
| 500 |
if ( $should_escape ) { |
| 501 |
$subtree = $input[ $key ]; |
| 502 |
foreach ( $subtree as $property => $value ) { |
| 503 |
$name = 'background-color'; |
| 504 |
if ( 'gradient' === $property ) { |
| 505 |
$name = 'background'; |
| 506 |
} |
| 507 |
$result = safecss_filter_attr( "$name: $value" ); |
| 508 |
|
| 509 |
if ( '' === $result ) { |
| 510 |
unset( $input[ $key ][ $property ] ); |
| 511 |
} |
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
if ( 0 === count( $input[ $key ] ) ) { |
| 516 |
unset( $input[ $key ] ); |
| 517 |
} |
| 518 |
} |
| 519 |
|
| 520 |
/** |
| 521 |
* Given a context, it returns its settings subtree. |
| 522 |
* |
| 523 |
* @param array $context Context adhering to the theme.json schema. |
| 524 |
* |
| 525 |
* @return array|null The settings subtree. |
| 526 |
*/ |
| 527 |
private static function extract_settings( $context ) { |
| 528 |
if ( empty( $context['settings'] ) ) { |
| 529 |
return null; |
| 530 |
} |
| 531 |
|
| 532 |
return $context['settings']; |
| 533 |
} |
| 534 |
|
| 535 |
/** |
| 536 |
* Given a tree, it creates a flattened one |
| 537 |
* by merging the keys and binding the leaf values |
| 538 |
* to the new keys. |
| 539 |
* |
| 540 |
* It also transforms camelCase names into kebab-case |
| 541 |
* and substitutes '/' by '-'. |
| 542 |
* |
| 543 |
* This is thought to be useful to generate |
| 544 |
* CSS Custom Properties from a tree, |
| 545 |
* although there's nothing in the implementation |
| 546 |
* of this function that requires that format. |
| 547 |
* |
| 548 |
* For example, assuming the given prefix is '--wp' |
| 549 |
* and the token is '--', for this input tree: |
| 550 |
* |
| 551 |
* { |
| 552 |
* 'some/property': 'value', |
| 553 |
* 'nestedProperty': { |
| 554 |
* 'sub-property': 'value' |
| 555 |
* } |
| 556 |
* } |
| 557 |
* |
| 558 |
* it'll return this output: |
| 559 |
* |
| 560 |
* { |
| 561 |
* '--wp--some-property': 'value', |
| 562 |
* '--wp--nested-property--sub-property': 'value' |
| 563 |
* } |
| 564 |
* |
| 565 |
* @param array $tree Input tree to process. |
| 566 |
* @param string $prefix Prefix to prepend to each variable. '' by default. |
| 567 |
* @param string $token Token to use between levels. '--' by default. |
| 568 |
* |
| 569 |
* @return array The flattened tree. |
| 570 |
*/ |
| 571 |
private static function flatten_tree( $tree, $prefix = '', $token = '--' ) { |
| 572 |
$result = array(); |
| 573 |
foreach ( $tree as $property => $value ) { |
| 574 |
$new_key = $prefix . str_replace( |
| 575 |
'/', |
| 576 |
'-', |
| 577 |
strtolower( preg_replace( '/(?<!^)[A-Z]/', '-$0', $property ) ) // CamelCase to kebab-case. |
| 578 |
); |
| 579 |
|
| 580 |
if ( is_array( $value ) ) { |
| 581 |
$new_prefix = $new_key . $token; |
| 582 |
$result = array_merge( |
| 583 |
$result, |
| 584 |
self::flatten_tree( $value, $new_prefix, $token ) |
| 585 |
); |
| 586 |
} else { |
| 587 |
$result[ $new_key ] = $value; |
| 588 |
} |
| 589 |
} |
| 590 |
return $result; |
| 591 |
} |
| 592 |
|
| 593 |
/** |
| 594 |
* Returns the style property for the given path. |
| 595 |
* |
| 596 |
* It also converts CSS Custom Property stored as |
| 597 |
* "var:preset|color|secondary" to the form |
| 598 |
* "--wp--preset--color--secondary". |
| 599 |
* |
| 600 |
* @param array $styles Styles subtree. |
| 601 |
* @param array $path Which property to process. |
| 602 |
* |
| 603 |
* @return string Style property value. |
| 604 |
*/ |
| 605 |
private static function get_property_value( $styles, $path ) { |
| 606 |
$value = gutenberg_experimental_get( $styles, $path, '' ); |
| 607 |
|
| 608 |
if ( '' === $value ) { |
| 609 |
return $value; |
| 610 |
} |
| 611 |
|
| 612 |
$prefix = 'var:'; |
| 613 |
$prefix_len = strlen( $prefix ); |
| 614 |
$token_in = '|'; |
| 615 |
$token_out = '--'; |
| 616 |
if ( 0 === strncmp( $value, $prefix, $prefix_len ) ) { |
| 617 |
$unwrapped_name = str_replace( |
| 618 |
$token_in, |
| 619 |
$token_out, |
| 620 |
substr( $value, $prefix_len ) |
| 621 |
); |
| 622 |
$value = "var(--wp--$unwrapped_name)"; |
| 623 |
} |
| 624 |
|
| 625 |
return $value; |
| 626 |
} |
| 627 |
|
| 628 |
/** |
| 629 |
* Given a context, it extracts the style properties |
| 630 |
* and adds them to the $declarations array following the format: |
| 631 |
* |
| 632 |
* ```php |
| 633 |
* array( |
| 634 |
* 'name' => 'property_name', |
| 635 |
* 'value' => 'property_value, |
| 636 |
* ) |
| 637 |
* ``` |
| 638 |
* |
| 639 |
* Note that this modifies the $declarations in place. |
| 640 |
* |
| 641 |
* @param array $declarations Holds the existing declarations. |
| 642 |
* @param array $context Input context to process. |
| 643 |
* @param array $context_supports Supports information for this context. |
| 644 |
*/ |
| 645 |
private static function compute_style_properties( &$declarations, $context, $context_supports ) { |
| 646 |
if ( empty( $context['styles'] ) ) { |
| 647 |
return; |
| 648 |
} |
| 649 |
|
| 650 |
foreach ( self::PROPERTIES_METADATA as $name => $metadata ) { |
| 651 |
if ( ! in_array( $name, $context_supports, true ) ) { |
| 652 |
continue; |
| 653 |
} |
| 654 |
|
| 655 |
$value = self::get_property_value( $context['styles'], $metadata['value'] ); |
| 656 |
if ( ! empty( $value ) ) { |
| 657 |
$kebabcased_name = strtolower( preg_replace( '/(?<!^)[A-Z]/', '-$0', $name ) ); |
| 658 |
$declarations[] = array( |
| 659 |
'name' => $kebabcased_name, |
| 660 |
'value' => $value, |
| 661 |
); |
| 662 |
} |
| 663 |
} |
| 664 |
} |
| 665 |
|
| 666 |
/** |
| 667 |
* Given a context, it extracts its presets |
| 668 |
* and adds them to the given input $stylesheet. |
| 669 |
* |
| 670 |
* Note this function modifies $stylesheet in place. |
| 671 |
* |
| 672 |
* @param string $stylesheet Input stylesheet to add the presets to. |
| 673 |
* @param array $context Context to process. |
| 674 |
* @param string $selector Selector wrapping the classes. |
| 675 |
*/ |
| 676 |
private static function compute_preset_classes( &$stylesheet, $context, $selector ) { |
| 677 |
if ( self::GLOBAL_SELECTOR === $selector ) { |
| 678 |
// Classes at the global level do not need any CSS prefixed, |
| 679 |
// and we don't want to increase its specificity. |
| 680 |
$selector = ''; |
| 681 |
} |
| 682 |
|
| 683 |
foreach ( self::PRESETS_METADATA as $preset ) { |
| 684 |
$values = gutenberg_experimental_get( $context, $preset['path'], array() ); |
| 685 |
foreach ( $values as $value ) { |
| 686 |
foreach ( $preset['classes'] as $class ) { |
| 687 |
$stylesheet .= self::to_ruleset( |
| 688 |
$selector . '.has-' . $value['slug'] . '-' . $class['class_suffix'], |
| 689 |
array( |
| 690 |
array( |
| 691 |
'name' => $class['property_name'], |
| 692 |
'value' => $value[ $preset['value_key'] ], |
| 693 |
), |
| 694 |
) |
| 695 |
); |
| 696 |
} |
| 697 |
} |
| 698 |
} |
| 699 |
} |
| 700 |
|
| 701 |
/** |
| 702 |
* Given a context, it extracts the CSS Custom Properties |
| 703 |
* for the presets and adds them to the $declarations array |
| 704 |
* following the format: |
| 705 |
* |
| 706 |
* ```php |
| 707 |
* array( |
| 708 |
* 'name' => 'property_name', |
| 709 |
* 'value' => 'property_value, |
| 710 |
* ) |
| 711 |
* ``` |
| 712 |
* |
| 713 |
* Note that this modifies the $declarations in place. |
| 714 |
* |
| 715 |
* @param array $declarations Holds the existing declarations. |
| 716 |
* @param array $context Input context to process. |
| 717 |
*/ |
| 718 |
private static function compute_preset_vars( &$declarations, $context ) { |
| 719 |
foreach ( self::PRESETS_METADATA as $preset ) { |
| 720 |
$values = gutenberg_experimental_get( $context, $preset['path'], array() ); |
| 721 |
foreach ( $values as $value ) { |
| 722 |
$declarations[] = array( |
| 723 |
'name' => '--wp--preset--' . $preset['css_var_infix'] . '--' . $value['slug'], |
| 724 |
'value' => $value[ $preset['value_key'] ], |
| 725 |
); |
| 726 |
} |
| 727 |
} |
| 728 |
} |
| 729 |
|
| 730 |
/** |
| 731 |
* Given a context, it extracts the CSS Custom Properties |
| 732 |
* for the custom values and adds them to the $declarations |
| 733 |
* array following the format: |
| 734 |
* |
| 735 |
* ```php |
| 736 |
* array( |
| 737 |
* 'name' => 'property_name', |
| 738 |
* 'value' => 'property_value, |
| 739 |
* ) |
| 740 |
* ``` |
| 741 |
* |
| 742 |
* Note that this modifies the $declarations in place. |
| 743 |
* |
| 744 |
* @param array $declarations Holds the existing declarations. |
| 745 |
* @param array $context Input context to process. |
| 746 |
*/ |
| 747 |
private static function compute_theme_vars( &$declarations, $context ) { |
| 748 |
$custom_values = gutenberg_experimental_get( $context, array( 'settings', 'custom' ) ); |
| 749 |
$css_vars = self::flatten_tree( $custom_values ); |
| 750 |
foreach ( $css_vars as $key => $value ) { |
| 751 |
$declarations[] = array( |
| 752 |
'name' => '--wp--custom--' . $key, |
| 753 |
'value' => $value, |
| 754 |
); |
| 755 |
} |
| 756 |
} |
| 757 |
|
| 758 |
/** |
| 759 |
* Given a selector and a declaration list, |
| 760 |
* creates the corresponding ruleset. |
| 761 |
* |
| 762 |
* To help debugging, will add some space |
| 763 |
* if SCRIPT_DEBUG is defined and true. |
| 764 |
* |
| 765 |
* @param string $selector CSS selector. |
| 766 |
* @param array $declarations List of declarations. |
| 767 |
* |
| 768 |
* @return string CSS ruleset. |
| 769 |
*/ |
| 770 |
private static function to_ruleset( $selector, $declarations ) { |
| 771 |
if ( empty( $declarations ) ) { |
| 772 |
return ''; |
| 773 |
} |
| 774 |
$ruleset = ''; |
| 775 |
|
| 776 |
if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) { |
| 777 |
$declaration_block = array_reduce( |
| 778 |
$declarations, |
| 779 |
function ( $carry, $element ) { |
| 780 |
return $carry .= "\t" . $element['name'] . ': ' . $element['value'] . ";\n"; }, |
| 781 |
'' |
| 782 |
); |
| 783 |
$ruleset .= $selector . " {\n" . $declaration_block . "}\n"; |
| 784 |
} else { |
| 785 |
$declaration_block = array_reduce( |
| 786 |
$declarations, |
| 787 |
function ( $carry, $element ) { |
| 788 |
return $carry .= $element['name'] . ': ' . $element['value'] . ';'; }, |
| 789 |
'' |
| 790 |
); |
| 791 |
$ruleset .= $selector . '{' . $declaration_block . '}'; |
| 792 |
} |
| 793 |
|
| 794 |
return $ruleset; |
| 795 |
} |
| 796 |
|
| 797 |
/** |
| 798 |
* Converts each context into a list of rulesets |
| 799 |
* to be appended to the stylesheet. |
| 800 |
* These rulesets contain all the css variables (custom variables and preset variables). |
| 801 |
* |
| 802 |
* See glossary at https://developer.mozilla.org/en-US/docs/Web/CSS/Syntax |
| 803 |
* |
| 804 |
* For each context this creates a new ruleset such as: |
| 805 |
* |
| 806 |
* context-selector { |
| 807 |
* --wp--preset--category--slug: value; |
| 808 |
* --wp--custom--variable: value; |
| 809 |
* } |
| 810 |
* |
| 811 |
* @return string The new stylesheet. |
| 812 |
*/ |
| 813 |
private function get_css_variables() { |
| 814 |
$stylesheet = ''; |
| 815 |
$metadata = $this->get_blocks_metadata(); |
| 816 |
foreach ( $this->contexts as $context_name => $context ) { |
| 817 |
if ( empty( $metadata[ $context_name ]['selector'] ) ) { |
| 818 |
continue; |
| 819 |
} |
| 820 |
$selector = $metadata[ $context_name ]['selector']; |
| 821 |
|
| 822 |
$declarations = array(); |
| 823 |
self::compute_preset_vars( $declarations, $context ); |
| 824 |
self::compute_theme_vars( $declarations, $context ); |
| 825 |
|
| 826 |
// Attach the ruleset for style and custom properties. |
| 827 |
$stylesheet .= self::to_ruleset( $selector, $declarations ); |
| 828 |
} |
| 829 |
return $stylesheet; |
| 830 |
} |
| 831 |
|
| 832 |
/** |
| 833 |
* Converts each context into a list of rulesets |
| 834 |
* containing the block styles to be appended to the stylesheet. |
| 835 |
* |
| 836 |
* See glossary at https://developer.mozilla.org/en-US/docs/Web/CSS/Syntax |
| 837 |
* |
| 838 |
* For each context this creates a new ruleset such as: |
| 839 |
* |
| 840 |
* context-selector { |
| 841 |
* style-property-one: value; |
| 842 |
* } |
| 843 |
* |
| 844 |
* Additionally, it'll also create new rulesets |
| 845 |
* as classes for each preset value such as: |
| 846 |
* |
| 847 |
* .has-value-color { |
| 848 |
* color: value; |
| 849 |
* } |
| 850 |
* |
| 851 |
* .has-value-background-color { |
| 852 |
* background-color: value; |
| 853 |
* } |
| 854 |
* |
| 855 |
* .has-value-font-size { |
| 856 |
* font-size: value; |
| 857 |
* } |
| 858 |
* |
| 859 |
* .has-value-gradient-background { |
| 860 |
* background: value; |
| 861 |
* } |
| 862 |
* |
| 863 |
* p.has-value-gradient-background { |
| 864 |
* background: value; |
| 865 |
* } |
| 866 |
* |
| 867 |
* @return string The new stylesheet. |
| 868 |
*/ |
| 869 |
private function get_block_styles() { |
| 870 |
$stylesheet = ''; |
| 871 |
$metadata = $this->get_blocks_metadata(); |
| 872 |
foreach ( $this->contexts as $context_name => $context ) { |
| 873 |
if ( empty( $metadata[ $context_name ]['selector'] ) || empty( $metadata[ $context_name ]['supports'] ) ) { |
| 874 |
continue; |
| 875 |
} |
| 876 |
$selector = $metadata[ $context_name ]['selector']; |
| 877 |
$supports = $metadata[ $context_name ]['supports']; |
| 878 |
|
| 879 |
$declarations = array(); |
| 880 |
self::compute_style_properties( $declarations, $context, $supports ); |
| 881 |
|
| 882 |
$stylesheet .= self::to_ruleset( $selector, $declarations ); |
| 883 |
|
| 884 |
// Attach the rulesets for the classes. |
| 885 |
self::compute_preset_classes( $stylesheet, $context, $selector ); |
| 886 |
} |
| 887 |
|
| 888 |
return $stylesheet; |
| 889 |
} |
| 890 |
|
| 891 |
/** |
| 892 |
* Returns the existing settings for each context. |
| 893 |
* |
| 894 |
* Example: |
| 895 |
* |
| 896 |
* { |
| 897 |
* 'global': { |
| 898 |
* 'color': { |
| 899 |
* 'custom': true |
| 900 |
* } |
| 901 |
* }, |
| 902 |
* 'core/paragraph': { |
| 903 |
* 'spacing': { |
| 904 |
* 'customPadding': true |
| 905 |
* } |
| 906 |
* } |
| 907 |
* } |
| 908 |
* |
| 909 |
* @return array Settings per context. |
| 910 |
*/ |
| 911 |
public function get_settings() { |
| 912 |
return array_filter( |
| 913 |
array_map( array( $this, 'extract_settings' ), $this->contexts ), |
| 914 |
function ( $element ) { |
| 915 |
return null !== $element; |
| 916 |
} |
| 917 |
); |
| 918 |
} |
| 919 |
|
| 920 |
/** |
| 921 |
* Returns the stylesheet that results of processing |
| 922 |
* the theme.json structure this object represents. |
| 923 |
* |
| 924 |
* @param string $type Type of stylesheet we want accepts 'all', 'block_styles', and 'css_variables'. |
| 925 |
* @return string Stylesheet. |
| 926 |
*/ |
| 927 |
public function get_stylesheet( $type = 'all' ) { |
| 928 |
switch ( $type ) { |
| 929 |
case 'block_styles': |
| 930 |
return $this->get_block_styles(); |
| 931 |
case 'css_variables': |
| 932 |
return $this->get_css_variables(); |
| 933 |
default: |
| 934 |
return $this->get_css_variables() . $this->get_block_styles(); |
| 935 |
} |
| 936 |
} |
| 937 |
|
| 938 |
/** |
| 939 |
* Merge new incoming data. |
| 940 |
* |
| 941 |
* @param WP_Theme_JSON $theme_json Data to merge. |
| 942 |
*/ |
| 943 |
public function merge( $theme_json ) { |
| 944 |
$incoming_data = $theme_json->get_raw_data(); |
| 945 |
|
| 946 |
foreach ( array_keys( $incoming_data ) as $context ) { |
| 947 |
foreach ( array( 'settings', 'styles' ) as $subtree ) { |
| 948 |
if ( ! isset( $incoming_data[ $context ][ $subtree ] ) ) { |
| 949 |
continue; |
| 950 |
} |
| 951 |
|
| 952 |
if ( ! isset( $this->contexts[ $context ][ $subtree ] ) ) { |
| 953 |
$this->contexts[ $context ][ $subtree ] = $incoming_data[ $context ][ $subtree ]; |
| 954 |
continue; |
| 955 |
} |
| 956 |
|
| 957 |
foreach ( array_keys( self::SCHEMA[ $subtree ] ) as $leaf ) { |
| 958 |
if ( ! isset( $incoming_data[ $context ][ $subtree ][ $leaf ] ) ) { |
| 959 |
continue; |
| 960 |
} |
| 961 |
|
| 962 |
if ( ! isset( $this->contexts[ $context ][ $subtree ][ $leaf ] ) ) { |
| 963 |
$this->contexts[ $context ][ $subtree ][ $leaf ] = $incoming_data[ $context ][ $subtree ][ $leaf ]; |
| 964 |
continue; |
| 965 |
} |
| 966 |
|
| 967 |
$this->contexts[ $context ][ $subtree ][ $leaf ] = array_merge( |
| 968 |
$this->contexts[ $context ][ $subtree ][ $leaf ], |
| 969 |
$incoming_data[ $context ][ $subtree ][ $leaf ] |
| 970 |
); |
| 971 |
} |
| 972 |
} |
| 973 |
} |
| 974 |
} |
| 975 |
|
| 976 |
/** |
| 977 |
* Retuns the raw data. |
| 978 |
* |
| 979 |
* @return array Raw data. |
| 980 |
*/ |
| 981 |
public function get_raw_data() { |
| 982 |
return $this->contexts; |
| 983 |
} |
| 984 |
|
| 985 |
} |
| 986 |
|
