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1 <?php 2 /** 3 * Layout block support flag. 4 * 5 * @package WordPress 6 * @since 5.8.0 7 */ 8 9 /** 10 * Gets the first style variation name from a className string that matches a registered style. 11 * 12 * @since 7.0.0 13 * 14 * @param string $class_name CSS class string for a block. 15 * @param array<string, array<string, mixed>> $registered_styles Currently registered block styles. 16 * @return string|null The name of the first registered variation, or null if none found. 17 */ 18 function wp_get_block_style_variation_name_from_registered_style( string $class_name, array $registered_styles = array() ): ?string { 19 if ( ! $class_name ) { 20 return null; 21 } 22 23 $registered_names = array_filter( array_column( $registered_styles, 'name' ) ); 24 25 $prefix = 'is-style-'; 26 $length = strlen( $prefix ); 27 28 foreach ( explode( ' ', $class_name ) as $class ) { 29 if ( str_starts_with( $class, $prefix ) ) { 30 $variation = substr( $class, $length ); 31 if ( 'default' !== $variation && in_array( $variation, $registered_names, true ) ) { 32 return $variation; 33 } 34 } 35 } 36 37 return null; 38 } 39 40 /** 41 * Returns the child-layout-only subset of a layout object. 42 * 43 * @since 7.1.0 44 * 45 * @param mixed $layout Layout object. 46 * @return array Child layout values, or an empty array. 47 */ 48 function wp_get_layout_child_values( $layout ) { 49 if ( ! is_array( $layout ) ) { 50 return array(); 51 } 52 53 return array_intersect_key( 54 $layout, 55 array_flip( array( 'selfStretch', 'flexSize', 'columnStart', 'columnSpan', 'rowStart', 'rowSpan' ) ) 56 ); 57 } 58 59 /** 60 * Returns the container-layout subset of a layout object. 61 * 62 * @since 7.1.0 63 * 64 * @param mixed $layout Layout object. 65 * @return array Container layout values, or an empty array. 66 */ 67 function wp_get_layout_container_values( $layout ) { 68 if ( ! is_array( $layout ) ) { 69 return array(); 70 } 71 72 return array_diff_key( 73 $layout, 74 array_flip( array( 'selfStretch', 'flexSize', 'columnStart', 'columnSpan', 'rowStart', 'rowSpan' ) ) 75 ); 76 } 77 78 /** 79 * Sanitizes a block gap value before layout style generation. 80 * 81 * @since 7.1.0 82 * 83 * @param string|array|null $gap_value Block gap value. 84 * @return string|array|null Sanitized block gap value. 85 */ 86 function wp_sanitize_block_gap_value( $gap_value ) { 87 if ( is_array( $gap_value ) ) { 88 foreach ( $gap_value as $key => $value ) { 89 $gap_value[ $key ] = ! is_scalar( $value ) || ( $value && preg_match( '%[\\\(&=}]|/\*%', (string) $value ) ) ? null : $value; 90 } 91 92 return $gap_value; 93 } 94 95 return $gap_value && preg_match( '%[\\\(&=}]|/\*%', $gap_value ) ? null : $gap_value; 96 } 97 98 /** 99 * Returns child layout styles for a block affected by its parent's layout. 100 * 101 * @since 7.1.0 102 * 103 * @param string $selector CSS selector. 104 * @param array $child_layout Child layout values. 105 * @param array $parent_layout Parent layout values. 106 * @param array|null $viewport_overrides Optional. Child viewport layout overrides to emit. 107 * @return array Child layout style rules. 108 */ 109 function wp_get_child_layout_style_rules( $selector, $child_layout, $parent_layout = array(), $viewport_overrides = null ) { 110 $base_child_layout = is_array( $child_layout ) ? $child_layout : array(); 111 $viewport_overrides = is_array( $viewport_overrides ) ? $viewport_overrides : null; 112 $child_layout = null === $viewport_overrides ? $base_child_layout : array_replace( $base_child_layout, $viewport_overrides ); 113 $child_layout_declarations = array(); 114 $child_layout_styles = array(); 115 $has_viewport_property_override = static function ( $property ) use ( $viewport_overrides ) { 116 return array_key_exists( $property, $viewport_overrides ); 117 }; 118 119 $self_stretch = $child_layout['selfStretch'] ?? null; 120 $base_self_stretch = $base_child_layout['selfStretch'] ?? null; 121 122 /* 123 * These are the serialized `selfStretch` values. `max` used to be called 124 * "Fixed" in the UI, but was renamed and replaced by `fixedNoShrink`. 125 */ 126 $flex_child_layout_values = array( 127 'fit' => 'fit', 128 'grow' => 'fill', 129 'max' => 'fixed', 130 'fixed' => 'fixedNoShrink', 131 ); 132 $flex_size_values = array( 133 $flex_child_layout_values['max'], 134 $flex_child_layout_values['fixed'], 135 ); 136 137 if ( null === $viewport_overrides || $has_viewport_property_override( 'selfStretch' ) || $has_viewport_property_override( 'flexSize' ) ) { 138 if ( 139 null !== $viewport_overrides && 140 ( $flex_child_layout_values['fit'] === $self_stretch || $flex_child_layout_values['grow'] === $self_stretch ) && 141 in_array( $base_self_stretch, $flex_size_values, true ) && 142 isset( $base_child_layout['flexSize'] ) 143 ) { 144 $child_layout_declarations['flex-basis'] = 'unset'; 145 if ( $flex_child_layout_values['fixed'] === $base_self_stretch ) { 146 $child_layout_declarations['flex-shrink'] = 'unset'; 147 } 148 } 149 if ( in_array( $self_stretch, $flex_size_values, true ) && isset( $child_layout['flexSize'] ) ) { 150 $child_layout_declarations['flex-basis'] = $child_layout['flexSize']; 151 if ( $flex_child_layout_values['fixed'] === $self_stretch ) { 152 $child_layout_declarations['flex-shrink'] = '0'; 153 } elseif ( null !== $viewport_overrides && $flex_child_layout_values['fixed'] === $base_self_stretch ) { 154 $child_layout_declarations['flex-shrink'] = 'unset'; 155 } 156 $child_layout_declarations['box-sizing'] = 'border-box'; 157 } elseif ( $flex_child_layout_values['grow'] === $self_stretch ) { 158 $child_layout_declarations['flex-grow'] = '1'; 159 } 160 } 161 162 /* 163 * Grid line numbers and spans are whole numbers. The editor stores them as numbers, but 164 * content saved by WordPress 6.3 to 6.6 stored them as numeric strings, and that 165 * migration only runs when a block is parsed in JavaScript, so the front end still sees 166 * strings. Accept any numeric value and cast it, and treat anything else as absent 167 * because it can't render as valid CSS. 168 */ 169 $column_start_attr = $child_layout['columnStart'] ?? null; 170 $column_start = is_numeric( $column_start_attr ) ? (int) $column_start_attr : null; 171 $column_span_attr = $child_layout['columnSpan'] ?? null; 172 $column_span = is_numeric( $column_span_attr ) ? (int) $column_span_attr : null; 173 if ( null === $viewport_overrides || $has_viewport_property_override( 'columnStart' ) || $has_viewport_property_override( 'columnSpan' ) ) { 174 if ( $column_start && $column_span ) { 175 $child_layout_declarations['grid-column'] = "$column_start / span $column_span"; 176 } elseif ( $column_start ) { 177 $child_layout_declarations['grid-column'] = "$column_start"; 178 } elseif ( $column_span ) { 179 $child_layout_declarations['grid-column'] = "span $column_span"; 180 } 181 } 182 183 $row_start_attr = $child_layout['rowStart'] ?? null; 184 $row_start = is_numeric( $row_start_attr ) ? (int) $row_start_attr : null; 185 $row_span_attr = $child_layout['rowSpan'] ?? null; 186 $row_span = is_numeric( $row_span_attr ) ? (int) $row_span_attr : null; 187 if ( null === $viewport_overrides || $has_viewport_property_override( 'rowStart' ) || $has_viewport_property_override( 'rowSpan' ) ) { 188 if ( $row_start && $row_span ) { 189 $child_layout_declarations['grid-row'] = "$row_start / span $row_span"; 190 } elseif ( $row_start ) { 191 $child_layout_declarations['grid-row'] = "$row_start"; 192 } elseif ( $row_span ) { 193 $child_layout_declarations['grid-row'] = "span $row_span"; 194 } 195 } 196 197 if ( ! empty( $child_layout_declarations ) ) { 198 $child_layout_styles[] = array( 199 'selector' => $selector, 200 'declarations' => $child_layout_declarations, 201 ); 202 } 203 204 $minimum_column_width_attr = $parent_layout['minimumColumnWidth'] ?? null; 205 $minimum_column_width = is_string( $minimum_column_width_attr ) ? $minimum_column_width_attr : null; 206 $column_count = $parent_layout['columnCount'] ?? null; 207 208 /* 209 * If columnSpan or columnStart is set, and the parent grid is responsive, i.e. if it has a minimumColumnWidth set, 210 * the columnSpan should be removed once the grid is smaller than the span, and columnStart should be removed 211 * once the grid has less columns than the start. 212 * If there's a minimumColumnWidth, the grid is responsive. But if the minimumColumnWidth value wasn't changed, it won't be set. 213 * In that case, if columnCount doesn't exist, we can assume that the grid is responsive. 214 */ 215 if ( null === $viewport_overrides && ( $column_span || $column_start ) && ( $minimum_column_width || ! $column_count ) ) { 216 $column_span_number = floatval( $column_span ); 217 $column_start_number = floatval( $column_start ); 218 $parent_column_width = $minimum_column_width ? $minimum_column_width : '12rem'; 219 $parent_column_value = floatval( $parent_column_width ); 220 $parent_column_unit = explode( $parent_column_value, $parent_column_width ); 221 222 $num_cols_to_break_at = 2; 223 if ( $column_span_number && $column_start_number ) { 224 $num_cols_to_break_at = $column_start_number + $column_span_number - 1; 225 } elseif ( $column_span_number ) { 226 $num_cols_to_break_at = $column_span_number; 227 } else { 228 $num_cols_to_break_at = $column_start_number; 229 } 230 231 /* 232 * If there is no unit, the width has somehow been mangled so we reset both unit and value 233 * to defaults. 234 * Additionally, the unit should be one of px, rem or em, so that also needs to be checked. 235 */ 236 if ( count( $parent_column_unit ) <= 1 ) { 237 $parent_column_unit = 'rem'; 238 $parent_column_value = 12; 239 } else { 240 $parent_column_unit = $parent_column_unit[1]; 241 242 if ( ! in_array( $parent_column_unit, array( 'px', 'rem', 'em' ), true ) ) { 243 $parent_column_unit = 'rem'; 244 } 245 } 246 247 /* 248 * A default gap value is used for this computation because custom gap values may not be 249 * viable to use in the computation of the container query value. 250 */ 251 $default_gap_value = 'px' === $parent_column_unit ? 24 : 1.5; 252 $container_query_value = $num_cols_to_break_at * $parent_column_value + ( $num_cols_to_break_at - 1 ) * $default_gap_value; 253 $minimum_container_query_value = $parent_column_value * 2 + $default_gap_value - 1; 254 $container_query_value = max( $container_query_value, $minimum_container_query_value ) . $parent_column_unit; 255 // If a span is set we want to preserve it as long as possible, otherwise we just reset the value. 256 $grid_column_value = $column_span && $column_span > 1 ? '1/-1' : 'auto'; 257 258 $child_layout_styles[] = array( 259 'rules_group' => "@container (max-width: $container_query_value )", 260 'selector' => $selector, 261 'declarations' => array( 262 'grid-column' => $grid_column_value, 263 'grid-row' => 'auto', 264 ), 265 ); 266 } 267 268 return $child_layout_styles; 269 } 270 271 /** 272 * Returns layout definitions, keyed by layout type. 273 * 274 * Provides a common definition of slugs, classnames, base styles, and spacing styles for each layout type. 275 * When making changes or additions to layout definitions, the corresponding JavaScript definitions should 276 * also be updated. 277 * 278 * @since 6.3.0 279 * @since 6.6.0 Updated specificity for compatibility with 0-1-0 global styles specificity. 280 * @access private 281 * 282 * @return array[] Layout definitions. 283 */ 284 function wp_get_layout_definitions() { 285 $layout_definitions = array( 286 'default' => array( 287 'name' => 'default', 288 'slug' => 'flow', 289 'className' => 'is-layout-flow', 290 'baseStyles' => array( 291 array( 292 'selector' => ' > .alignleft', 293 'rules' => array( 294 'float' => 'left', 295 'margin-inline-start' => '0', 296 'margin-inline-end' => '2em', 297 ), 298 ), 299 array( 300 'selector' => ' > .alignright', 301 'rules' => array( 302 'float' => 'right', 303 'margin-inline-start' => '2em', 304 'margin-inline-end' => '0', 305 ), 306 ), 307 array( 308 'selector' => ' > .aligncenter', 309 'rules' => array( 310 'margin-left' => 'auto !important', 311 'margin-right' => 'auto !important', 312 ), 313 ), 314 ), 315 'spacingStyles' => array( 316 array( 317 'selector' => ' > :first-child', 318 'rules' => array( 319 'margin-block-start' => '0', 320 ), 321 ), 322 array( 323 'selector' => ' > :last-child', 324 'rules' => array( 325 'margin-block-end' => '0', 326 ), 327 ), 328 array( 329 'selector' => ' > *', 330 'rules' => array( 331 'margin-block-start' => null, 332 'margin-block-end' => '0', 333 ), 334 ), 335 ), 336 ), 337 'constrained' => array( 338 'name' => 'constrained', 339 'slug' => 'constrained', 340 'className' => 'is-layout-constrained', 341 'baseStyles' => array( 342 array( 343 'selector' => ' > .alignleft', 344 'rules' => array( 345 'float' => 'left', 346 'margin-inline-start' => '0', 347 'margin-inline-end' => '2em', 348 ), 349 ), 350 array( 351 'selector' => ' > .alignright', 352 'rules' => array( 353 'float' => 'right', 354 'margin-inline-start' => '2em', 355 'margin-inline-end' => '0', 356 ), 357 ), 358 array( 359 'selector' => ' > .aligncenter', 360 'rules' => array( 361 'margin-left' => 'auto !important', 362 'margin-right' => 'auto !important', 363 ), 364 ), 365 array( 366 'selector' => ' > :where(:not(.alignleft):not(.alignright):not(.alignfull))', 367 'rules' => array( 368 'max-width' => 'var(--wp--style--global--content-size)', 369 'margin-left' => 'auto !important', 370 'margin-right' => 'auto !important', 371 ), 372 ), 373 array( 374 'selector' => ' > .alignwide', 375 'rules' => array( 376 'max-width' => 'var(--wp--style--global--wide-size)', 377 ), 378 ), 379 ), 380 'spacingStyles' => array( 381 array( 382 'selector' => ' > :first-child', 383 'rules' => array( 384 'margin-block-start' => '0', 385 ), 386 ), 387 array( 388 'selector' => ' > :last-child', 389 'rules' => array( 390 'margin-block-end' => '0', 391 ), 392 ), 393 array( 394 'selector' => ' > *', 395 'rules' => array( 396 'margin-block-start' => null, 397 'margin-block-end' => '0', 398 ), 399 ), 400 ), 401 ), 402 'flex' => array( 403 'name' => 'flex', 404 'slug' => 'flex', 405 'className' => 'is-layout-flex', 406 'displayMode' => 'flex', 407 'baseStyles' => array( 408 array( 409 'selector' => '', 410 'rules' => array( 411 'flex-wrap' => 'wrap', 412 'align-items' => 'center', 413 ), 414 ), 415 array( 416 'selector' => ' > :is(*, div)', // :is(*, div) instead of just * increases the specificity by 001. 417 'rules' => array( 418 'margin' => '0', 419 ), 420 ), 421 ), 422 'spacingStyles' => array( 423 array( 424 'selector' => '', 425 'rules' => array( 426 'gap' => null, 427 ), 428 ), 429 ), 430 ), 431 'grid' => array( 432 'name' => 'grid', 433 'slug' => 'grid', 434 'className' => 'is-layout-grid', 435 'displayMode' => 'grid', 436 'baseStyles' => array( 437 array( 438 'selector' => ' > :is(*, div)', // :is(*, div) instead of just * increases the specificity by 001. 439 'rules' => array( 440 'margin' => '0', 441 ), 442 ), 443 ), 444 'spacingStyles' => array( 445 array( 446 'selector' => '', 447 'rules' => array( 448 'gap' => null, 449 ), 450 ), 451 ), 452 ), 453 ); 454 455 return $layout_definitions; 456 } 457 458 /** 459 * Registers the layout block attribute for block types that support it. 460 * 461 * @since 5.8.0 462 * @since 6.3.0 Check for layout support via the `layout` key with fallback to `__experimentalLayout`. 463 * @access private 464 * 465 * @param WP_Block_Type $block_type Block Type. 466 */ 467 function wp_register_layout_support( $block_type ) { 468 $support_layout = block_has_support( $block_type, 'layout', false ) || block_has_support( $block_type, '__experimentalLayout', false ); 469 if ( $support_layout ) { 470 if ( ! $block_type->attributes ) { 471 $block_type->attributes = array(); 472 } 473 474 if ( ! array_key_exists( 'layout', $block_type->attributes ) ) { 475 $block_type->attributes['layout'] = array( 476 'type' => 'object', 477 ); 478 } 479 } 480 } 481 482 /** 483 * Generates the CSS corresponding to the provided layout. 484 * 485 * @since 5.9.0 486 * @since 6.1.0 Added `$block_spacing` param, use style engine to enqueue styles. 487 * @since 6.3.0 Added grid layout type. 488 * @since 6.6.0 Removed duplicated selector from layout styles. 489 * Enabled negative margins for alignfull children of blocks with custom padding. 490 * @since 7.1.0 Added options array with options to process responsive styles. 491 * @access private 492 * 493 * @param string $selector CSS selector. 494 * @param array $layout Layout object. The one that is passed has already checked 495 * the existence of default block layout. 496 * @param bool $has_block_gap_support Optional. Whether the theme has support for the block gap. Default false. 497 * @param string|string[]|null $gap_value Optional. The block gap value to apply. Default null. 498 * @param bool $should_skip_gap_serialization Optional. Whether to skip applying the user-defined value set in the editor. Default false. 499 * @param string|array $fallback_gap_value Optional. The block gap value to apply. If it's an array expected properties are "top" and/or "left". Default '0.5em'. 500 * @param array|null $block_spacing Optional. Custom spacing set on the block. Default null. 501 * @param array $options { 502 * Optional. Extra options for internal callers. Default empty array. 503 * 504 * @type array $viewport_overrides An array of layout property overrides for the sake of style generation, 505 * keyed by property name. 506 * @type string|null $rules_group Optional group name for the rules. Default null. 507 * @type bool $has_block_gap_override Whether the block gap has been overridden. Default false. 508 * } 509 * @return string CSS styles on success. Else, empty string. 510 */ 511 function wp_get_layout_style( $selector, $layout, $has_block_gap_support = false, $gap_value = null, $should_skip_gap_serialization = false, $fallback_gap_value = '0.5em', $block_spacing = null, $options = array() ) { 512 $base_layout = is_array( $layout ) ? $layout : array(); 513 $viewport_overrides = $options['viewport_overrides'] ?? null; 514 $layout_for_styles = null === $viewport_overrides ? $base_layout : array_replace( $base_layout, $viewport_overrides ); 515 $layout_type = $base_layout['type'] ?? 'default'; 516 $rules_group = $options['rules_group'] ?? null; 517 $has_block_gap_override = ! empty( $options['has_block_gap_override'] ); 518 $should_output_block_gap = null === $viewport_overrides || $has_block_gap_override; 519 520 /* 521 * Viewport styles only store changed fields. If a field is present with null, 522 * the user cleared a value inherited from the default viewport, so check 523 * whether the key exists rather than whether the value is truthy. 524 */ 525 $has_viewport_property_override = static function ( $property ) use ( $viewport_overrides ) { 526 return array_key_exists( $property, $viewport_overrides ); 527 }; 528 $layout_styles = array(); 529 530 if ( 'default' === $layout_type ) { 531 if ( $has_block_gap_support && $should_output_block_gap ) { 532 if ( is_array( $gap_value ) ) { 533 $gap_value = $gap_value['top'] ?? null; 534 } 535 if ( null !== $gap_value && ! $should_skip_gap_serialization ) { 536 // Get spacing CSS variable from preset value if provided. 537 if ( is_string( $gap_value ) && str_contains( $gap_value, 'var:preset|spacing|' ) ) { 538 $index_to_splice = strrpos( $gap_value, '|' ) + 1; 539 $slug = _wp_to_kebab_case( substr( $gap_value, $index_to_splice ) ); 540 $gap_value = "var(--wp--preset--spacing--$slug)"; 541 } 542 543 array_push( 544 $layout_styles, 545 array( 546 'selector' => "$selector > *", 547 'declarations' => array( 548 'margin-block-start' => '0', 549 'margin-block-end' => '0', 550 ), 551 ), 552 array( 553 'selector' => "$selector > * + *", 554 'declarations' => array( 555 'margin-block-start' => $gap_value, 556 'margin-block-end' => '0', 557 ), 558 ) 559 ); 560 } 561 } 562 } elseif ( 'constrained' === $layout_type ) { 563 // The schemas and editor UI only produce strings here, so treat a non-string 564 // value as absent rather than casting it — it couldn't render as valid CSS anyway. 565 $content_size_attr = $layout_for_styles['contentSize'] ?? null; 566 $content_size = is_string( $content_size_attr ) ? $content_size_attr : ''; 567 $wide_size_attr = $layout_for_styles['wideSize'] ?? null; 568 $wide_size = is_string( $wide_size_attr ) ? $wide_size_attr : ''; 569 $justify_content_attr = $layout_for_styles['justifyContent'] ?? null; 570 $justify_content = is_string( $justify_content_attr ) ? $justify_content_attr : 'center'; 571 572 // Check if viewport-specific ("override") values exist. Null values are valid and mean the user cleared a value inherited from the default viewport. 573 $has_justify_content_override = null !== $viewport_overrides && $has_viewport_property_override( 'justifyContent' ); 574 $has_content_size_override = null !== $viewport_overrides && $has_viewport_property_override( 'contentSize' ); 575 $has_wide_size_override = null !== $viewport_overrides && $has_viewport_property_override( 'wideSize' ); 576 577 /* 578 * Styles should be output either if there are no viewport overrides (this is the default case), or if the user has set a new viewport-specific 579 * value for contentSize or wideSize. If a viewport clears a custom constrained size, reset to the global layout variable. 580 */ 581 $should_output_constrained_sizes = null === $viewport_overrides || $has_content_size_override || $has_wide_size_override; 582 $is_resetting_constrained_sizes = null !== $viewport_overrides && 583 ( 584 ( $has_content_size_override && ! $content_size ) || 585 ( $has_wide_size_override && ! $wide_size ) 586 ); 587 588 // If a viewport clears a custom constrained size, reset to the global layout variable. 589 $all_max_width_value = $content_size 590 ? $content_size 591 : ( $wide_size && ! $has_content_size_override ? $wide_size : 'var(--wp--style--global--content-size, none)' ); 592 $wide_max_width_value = $wide_size 593 ? $wide_size 594 : ( $content_size && ! $has_wide_size_override ? $content_size : 'var(--wp--style--global--wide-size, none)' ); 595 596 // Make sure there is a single CSS rule, and all tags are stripped for security. 597 $all_max_width_value = safecss_filter_attr( explode( ';', $all_max_width_value )[0] ); 598 $wide_max_width_value = safecss_filter_attr( explode( ';', $wide_max_width_value )[0] ); 599 600 $margin_left = 'left' === $justify_content ? '0 !important' : 'auto !important'; 601 $margin_right = 'right' === $justify_content ? '0 !important' : 'auto !important'; 602 603 if ( $should_output_constrained_sizes && ( $content_size || $wide_size || $is_resetting_constrained_sizes ) ) { 604 $content_size_declarations = array( 605 'max-width' => $all_max_width_value, 606 ); 607 608 if ( null === $viewport_overrides || $has_justify_content_override ) { 609 $content_size_declarations['margin-left'] = $margin_left; 610 $content_size_declarations['margin-right'] = $margin_right; 611 } 612 613 array_push( 614 $layout_styles, 615 array( 616 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 617 'declarations' => $content_size_declarations, 618 ), 619 array( 620 'selector' => "$selector > .alignwide", 621 'declarations' => array( 'max-width' => $wide_max_width_value ), 622 ), 623 array( 624 'selector' => "$selector .alignfull", 625 'declarations' => array( 'max-width' => 'none' ), 626 ) 627 ); 628 } 629 630 if ( null === $viewport_overrides && isset( $block_spacing ) ) { 631 $block_spacing_values = wp_style_engine_get_styles( 632 array( 633 'spacing' => $block_spacing, 634 ) 635 ); 636 637 /* 638 * Handle negative margins for alignfull children of blocks with custom padding set. 639 * They're added separately because padding might only be set on one side. 640 */ 641 if ( isset( $block_spacing_values['declarations']['padding-right'] ) ) { 642 $padding_right = $block_spacing_values['declarations']['padding-right']; 643 // Add unit if 0. 644 if ( '0' === $padding_right ) { 645 $padding_right = '0px'; 646 } 647 $layout_styles[] = array( 648 'selector' => "$selector > .alignfull", 649 'declarations' => array( 'margin-right' => "calc($padding_right * -1)" ), 650 ); 651 } 652 if ( isset( $block_spacing_values['declarations']['padding-left'] ) ) { 653 $padding_left = $block_spacing_values['declarations']['padding-left']; 654 // Add unit if 0. 655 if ( '0' === $padding_left ) { 656 $padding_left = '0px'; 657 } 658 $layout_styles[] = array( 659 'selector' => "$selector > .alignfull", 660 'declarations' => array( 'margin-left' => "calc($padding_left * -1)" ), 661 ); 662 } 663 } 664 665 if ( $has_justify_content_override && ! $should_output_constrained_sizes ) { 666 $layout_styles[] = array( 667 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 668 'declarations' => array( 669 'margin-left' => $margin_left, 670 'margin-right' => $margin_right, 671 ), 672 ); 673 } elseif ( null === $viewport_overrides ) { 674 if ( 'left' === $justify_content ) { 675 $layout_styles[] = array( 676 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 677 'declarations' => array( 'margin-left' => '0 !important' ), 678 ); 679 } 680 681 if ( 'right' === $justify_content ) { 682 $layout_styles[] = array( 683 'selector' => "$selector > :where(:not(.alignleft):not(.alignright):not(.alignfull))", 684 'declarations' => array( 'margin-right' => '0 !important' ), 685 ); 686 } 687 } 688 689 if ( $has_block_gap_support && $should_output_block_gap ) { 690 if ( is_array( $gap_value ) ) { 691 $gap_value = $gap_value['top'] ?? null; 692 } 693 if ( null !== $gap_value && ! $should_skip_gap_serialization ) { 694 // Get spacing CSS variable from preset value if provided. 695 if ( is_string( $gap_value ) && str_contains( $gap_value, 'var:preset|spacing|' ) ) { 696 $index_to_splice = strrpos( $gap_value, '|' ) + 1; 697 $slug = _wp_to_kebab_case( substr( $gap_value, $index_to_splice ) ); 698 $gap_value = "var(--wp--preset--spacing--$slug)"; 699 } 700 701 array_push( 702 $layout_styles, 703 array( 704 'selector' => "$selector > *", 705 'declarations' => array( 706 'margin-block-start' => '0', 707 'margin-block-end' => '0', 708 ), 709 ), 710 array( 711 'selector' => "$selector > * + *", 712 'declarations' => array( 713 'margin-block-start' => $gap_value, 714 'margin-block-end' => '0', 715 ), 716 ) 717 ); 718 } 719 } 720 } elseif ( 'flex' === $layout_type ) { 721 $layout_orientation = $layout_for_styles['orientation'] ?? 'horizontal'; 722 723 $justify_content_options = array( 724 'left' => 'flex-start', 725 'right' => 'flex-end', 726 'center' => 'center', 727 ); 728 729 $vertical_alignment_options = array( 730 'top' => 'flex-start', 731 'center' => 'center', 732 'bottom' => 'flex-end', 733 ); 734 735 if ( 'horizontal' === $layout_orientation ) { 736 $justify_content_options += array( 'space-between' => 'space-between' ); 737 $vertical_alignment_options += array( 'stretch' => 'stretch' ); 738 } else { 739 $justify_content_options += array( 'stretch' => 'stretch' ); 740 $vertical_alignment_options += array( 'space-between' => 'space-between' ); 741 } 742 743 /* 744 * Styles should be output either if there are no viewport overrides (this is the default case), or if the user has set a new viewport-specific 745 * value for any of the flex properties. 746 */ 747 $should_output_flex_wrap = null === $viewport_overrides || $has_viewport_property_override( 'flexWrap' ); 748 $should_output_flex_orientation = null === $viewport_overrides || $has_viewport_property_override( 'orientation' ); 749 $should_output_flex_justification = null === $viewport_overrides || $has_viewport_property_override( 'justifyContent' ) || $has_viewport_property_override( 'orientation' ); 750 $should_output_flex_alignment = null === $viewport_overrides || $has_viewport_property_override( 'verticalAlignment' ) || $has_viewport_property_override( 'orientation' ); 751 752 if ( $should_output_flex_wrap && ! empty( $layout_for_styles['flexWrap'] ) && 'nowrap' === $layout_for_styles['flexWrap'] ) { 753 $layout_styles[] = array( 754 'selector' => $selector, 755 'declarations' => array( 'flex-wrap' => 'nowrap' ), 756 ); 757 } 758 759 if ( $has_block_gap_support && $should_output_block_gap && isset( $gap_value ) ) { 760 $combined_gap_value = ''; 761 $gap_sides = is_array( $gap_value ) ? array( 'top', 'left' ) : array( 'top' ); 762 763 foreach ( $gap_sides as $gap_side ) { 764 $process_value = $gap_value; 765 if ( is_array( $gap_value ) ) { 766 if ( is_array( $fallback_gap_value ) ) { 767 $fallback_value = $fallback_gap_value[ $gap_side ] ?? reset( $fallback_gap_value ); 768 } else { 769 $fallback_value = $fallback_gap_value; 770 } 771 $process_value = $gap_value[ $gap_side ] ?? $fallback_value; 772 } 773 // Get spacing CSS variable from preset value if provided. 774 if ( is_string( $process_value ) && str_contains( $process_value, 'var:preset|spacing|' ) ) { 775 $index_to_splice = strrpos( $process_value, '|' ) + 1; 776 $slug = _wp_to_kebab_case( substr( $process_value, $index_to_splice ) ); 777 $process_value = "var(--wp--preset--spacing--$slug)"; 778 } 779 $combined_gap_value .= "$process_value "; 780 } 781 $gap_value = trim( $combined_gap_value ); 782 783 if ( null !== $gap_value && ! $should_skip_gap_serialization ) { 784 $layout_styles[] = array( 785 'selector' => $selector, 786 'declarations' => array( 'gap' => $gap_value ), 787 ); 788 } 789 } 790 791 $flex_justify_content = $layout_for_styles['justifyContent'] ?? null; 792 $flex_vertical_alignment = $layout_for_styles['verticalAlignment'] ?? null; 793 794 if ( 'horizontal' === $layout_orientation ) { 795 /* 796 * Add this style only if is not empty for backwards compatibility, 797 * since we intend to convert blocks that had flex layout implemented 798 * by custom css. 799 */ 800 if ( $should_output_flex_justification && ! empty( $flex_justify_content ) && is_string( $flex_justify_content ) && array_key_exists( $flex_justify_content, $justify_content_options ) ) { 801 $layout_styles[] = array( 802 'selector' => $selector, 803 'declarations' => array( 'justify-content' => $justify_content_options[ $flex_justify_content ] ), 804 ); 805 } 806 807 if ( $should_output_flex_alignment && ! empty( $flex_vertical_alignment ) && is_string( $flex_vertical_alignment ) && array_key_exists( $flex_vertical_alignment, $vertical_alignment_options ) ) { 808 $layout_styles[] = array( 809 'selector' => $selector, 810 'declarations' => array( 'align-items' => $vertical_alignment_options[ $flex_vertical_alignment ] ), 811 ); 812 } 813 } else { 814 if ( $should_output_flex_orientation ) { 815 $layout_styles[] = array( 816 'selector' => $selector, 817 'declarations' => array( 'flex-direction' => 'column' ), 818 ); 819 } 820 if ( $should_output_flex_justification && ! empty( $flex_justify_content ) && is_string( $flex_justify_content ) && array_key_exists( $flex_justify_content, $justify_content_options ) ) { 821 $layout_styles[] = array( 822 'selector' => $selector, 823 'declarations' => array( 'align-items' => $justify_content_options[ $flex_justify_content ] ), 824 ); 825 } elseif ( $should_output_flex_justification ) { 826 $layout_styles[] = array( 827 'selector' => $selector, 828 'declarations' => array( 'align-items' => 'flex-start' ), 829 ); 830 } 831 if ( $should_output_flex_alignment && ! empty( $flex_vertical_alignment ) && is_string( $flex_vertical_alignment ) && array_key_exists( $flex_vertical_alignment, $vertical_alignment_options ) ) { 832 $layout_styles[] = array( 833 'selector' => $selector, 834 'declarations' => array( 'justify-content' => $vertical_alignment_options[ $flex_vertical_alignment ] ), 835 ); 836 } 837 } 838 } elseif ( 'grid' === $layout_type ) { 839 /* 840 * Column and row counts are whole numbers, for the same reason as the grid line 841 * numbers in wp_get_child_layout_style_rules(). 842 */ 843 $column_count_attr = $layout_for_styles['columnCount'] ?? null; 844 $column_count = is_numeric( $column_count_attr ) ? (int) $column_count_attr : null; 845 $row_count_attr = $layout_for_styles['rowCount'] ?? null; 846 $row_count = is_numeric( $row_count_attr ) ? (int) $row_count_attr : null; 847 848 /* 849 * If the gap value is an array, we use the "left" value because it represents the vertical gap, which 850 * is the relevant one for computation of responsive grid columns. 851 */ 852 if ( is_array( $fallback_gap_value ) ) { 853 $responsive_gap_value = $fallback_gap_value['left'] ?? reset( $fallback_gap_value ); 854 } else { 855 $responsive_gap_value = $fallback_gap_value; 856 } 857 858 if ( $has_block_gap_support && isset( $gap_value ) ) { 859 $combined_gap_value = ''; 860 $gap_sides = is_array( $gap_value ) ? array( 'top', 'left' ) : array( 'top' ); 861 862 foreach ( $gap_sides as $gap_side ) { 863 $process_value = $gap_value; 864 if ( is_array( $gap_value ) ) { 865 if ( is_array( $fallback_gap_value ) ) { 866 $fallback_value = $fallback_gap_value[ $gap_side ] ?? reset( $fallback_gap_value ); 867 } else { 868 $fallback_value = $fallback_gap_value; 869 } 870 $process_value = $gap_value[ $gap_side ] ?? $fallback_value; 871 } 872 // Get spacing CSS variable from preset value if provided. 873 if ( is_string( $process_value ) && str_contains( $process_value, 'var:preset|spacing|' ) ) { 874 $index_to_splice = strrpos( $process_value, '|' ) + 1; 875 $slug = _wp_to_kebab_case( substr( $process_value, $index_to_splice ) ); 876 $process_value = "var(--wp--preset--spacing--$slug)"; 877 } 878 $combined_gap_value .= "$process_value "; 879 } 880 $gap_value = trim( $combined_gap_value ); 881 $responsive_gap_value = $gap_value; 882 } 883 884 // Ensure 0 values have a unit so they work in calc(). 885 if ( '0' === $responsive_gap_value || 0 === $responsive_gap_value ) { 886 $responsive_gap_value = '0px'; 887 } 888 889 /* 890 * Styles should be output either if there are no viewport overrides (this is the default case), or if the user has set a new viewport-specific 891 * value for any of the grid properties. 892 */ 893 $should_output_grid_columns = null === $viewport_overrides || $has_viewport_property_override( 'minimumColumnWidth' ) || $has_viewport_property_override( 'columnCount' ) || $has_viewport_property_override( 'autoFit' ); 894 $uses_gap_in_grid_columns = ! empty( $column_count ) && ! empty( $layout_for_styles['minimumColumnWidth'] ); 895 if ( $has_block_gap_override && $uses_gap_in_grid_columns ) { 896 $should_output_grid_columns = true; 897 } 898 899 $should_output_grid_rows = ( null === $viewport_overrides || $has_viewport_property_override( 'rowCount' ) ) && ! empty( $column_count ) && ! empty( $row_count ); 900 $grid_declarations = array(); 901 902 /* 903 * When enabled, columns stretch to fill the available space using 904 * `auto-fit`; otherwise empty tracks are preserved with `auto-fill`. 905 */ 906 $auto_placement = ! empty( $layout_for_styles['autoFit'] ) ? 'auto-fit' : 'auto-fill'; 907 908 if ( $should_output_grid_columns && ! empty( $column_count ) && ! empty( $layout_for_styles['minimumColumnWidth'] ) ) { 909 $max_value = 'max(min(' . $layout_for_styles['minimumColumnWidth'] . ', 100%), (100% - (' . $responsive_gap_value . ' * (' . $column_count . ' - 1))) /' . $column_count . ')'; 910 $grid_declarations['grid-template-columns'] = 'repeat(' . $auto_placement . ', minmax(' . $max_value . ', 1fr))'; 911 } elseif ( $should_output_grid_columns && ! empty( $column_count ) ) { 912 $grid_declarations['grid-template-columns'] = 'repeat(' . $column_count . ', minmax(0, 1fr))'; 913 } elseif ( $should_output_grid_columns ) { 914 $minimum_column_width = ! empty( $layout_for_styles['minimumColumnWidth'] ) ? $layout_for_styles['minimumColumnWidth'] : '12rem'; 915 $grid_declarations['grid-template-columns'] = 'repeat(' . $auto_placement . ', minmax(min(' . $minimum_column_width . ', 100%), 1fr))'; 916 } 917 918 if ( ! empty( $grid_declarations ) ) { 919 $base_has_container_type = empty( $base_layout['columnCount'] ) || ( ! empty( $base_layout['columnCount'] ) && ! empty( $base_layout['minimumColumnWidth'] ) ); 920 if ( empty( $column_count ) || ! empty( $layout_for_styles['minimumColumnWidth'] ) ) { 921 if ( null === $viewport_overrides || ! $base_has_container_type ) { 922 $grid_declarations['container-type'] = 'inline-size'; 923 } 924 } 925 $layout_styles[] = array( 926 'selector' => $selector, 927 'declarations' => $grid_declarations, 928 ); 929 } 930 931 if ( $should_output_grid_rows ) { 932 $layout_styles[] = array( 933 'selector' => $selector, 934 'declarations' => array( 'grid-template-rows' => 'repeat(' . $row_count . ', minmax(1rem, auto))' ), 935 ); 936 } 937 938 if ( $has_block_gap_support && $should_output_block_gap && null !== $gap_value && ! $should_skip_gap_serialization ) { 939 $layout_styles[] = array( 940 'selector' => $selector, 941 'declarations' => array( 'gap' => $gap_value ), 942 ); 943 } 944 } 945 946 if ( ! empty( $layout_styles ) ) { 947 if ( ! empty( $rules_group ) ) { 948 foreach ( $layout_styles as $index => $layout_style ) { 949 $layout_styles[ $index ]['rules_group'] = $rules_group; 950 } 951 } 952 953 /* 954 * Add to the style engine store to enqueue and render layout styles. 955 * Return compiled layout styles to retain backwards compatibility. 956 * Since https://github.com/WordPress/gutenberg/pull/42452, 957 * wp_enqueue_block_support_styles is no longer called in this block supports file. 958 */ 959 return wp_style_engine_get_stylesheet_from_css_rules( 960 $layout_styles, 961 array( 962 'context' => 'block-supports', 963 'prettify' => false, 964 ) 965 ); 966 } 967 968 return ''; 969 } 970 971 /** 972 * Renders the layout config to the block wrapper. 973 * 974 * @since 5.8.0 975 * @since 6.3.0 Adds compound class to layout wrapper for global spacing styles. 976 * @since 6.3.0 Check for layout support via the `layout` key with fallback to `__experimentalLayout`. 977 * @since 6.6.0 Removed duplicate container class from layout styles. 978 * @access private 979 * 980 * @param string $block_content Rendered block content. 981 * @param array $block Block object. 982 * @return string Filtered block content. 983 */ 984 function wp_render_layout_support_flag( $block_content, $block ) { 985 static $global_styles = null; 986 987 $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); 988 $block_supports_layout = block_has_support( $block_type, 'layout', false ) || block_has_support( $block_type, '__experimentalLayout', false ); 989 $style_attr = $block['attrs']['style'] ?? array(); 990 /* 991 * A block with no layout support and no style attribute at all cannot 992 * produce layout output, so return before resolving global settings. 993 * 994 * Resolving settings is not read-only: on a cold cache it queries the 995 * user's `wp_global_styles` post, which fires `the_posts`. A callback on 996 * that hook that renders blocks re-enters this filter, and the content it 997 * renders at that point is the global styles post itself, which parses to a 998 * single block with no name and no attributes. Without this return that 999 * block resolves settings again and the recursion has no base case. 1000 */ 1001 if ( ! $block_supports_layout && empty( $style_attr ) ) { 1002 return $block_content; 1003 } 1004 1005 $global_settings = wp_get_global_settings(); 1006 $viewport_settings = $global_settings['viewport'] ?? null; 1007 $responsive_media_queries = WP_Theme_JSON::get_viewport_media_queries( $viewport_settings ); 1008 $child_layout = $style_attr['layout'] ?? null; 1009 1010 /* 1011 * Collect responsive viewport child layout overrides so that a block with 1012 * only responsive child layout (no base child layout) is still processed. 1013 */ 1014 $viewport_child_layouts = array(); 1015 foreach ( $responsive_media_queries as $breakpoint => $media_query ) { 1016 $viewport_child = wp_get_layout_child_values( $style_attr[ $breakpoint ]['layout'] ?? null ); 1017 1018 if ( ! empty( $viewport_child ) ) { 1019 $viewport_child_layouts[ $breakpoint ] = array( 1020 'media_query' => $media_query, 1021 'child_layout' => $viewport_child, 1022 ); 1023 } 1024 } 1025 1026 if ( ! $block_supports_layout && ! $child_layout && empty( $viewport_child_layouts ) ) { 1027 return $block_content; 1028 } 1029 1030 $outer_class_names = array(); 1031 1032 // Child layout specific logic. 1033 if ( $child_layout || ! empty( $viewport_child_layouts ) ) { 1034 $base_child_layout = wp_get_layout_child_values( $child_layout ); 1035 $parent_layout = $block['parentLayout'] ?? array(); 1036 /* 1037 * Generates a unique class for child block layout styles. 1038 * 1039 * To ensure consistent class generation across different page renders, 1040 * only properties that affect layout styling are used. These properties 1041 * come from `$block['attrs']['style']['layout']`, viewport overrides in 1042 * `$block['attrs']['style'][$breakpoint]['layout']`, and `$block['parentLayout']`. 1043 * 1044 * As long as these properties coincide, the generated class will be the same. 1045 */ 1046 $container_content_hash_input = array( 1047 'layout' => $base_child_layout, 1048 'parentLayout' => array_intersect_key( 1049 $parent_layout, 1050 array_flip( array( 'minimumColumnWidth', 'columnCount' ) ) 1051 ), 1052 ); 1053 1054 foreach ( $viewport_child_layouts as $breakpoint => $viewport_data ) { 1055 $container_content_hash_input[ $breakpoint ] = $viewport_data['child_layout']; 1056 } 1057 1058 $container_content_class = wp_unique_id_from_values( 1059 $container_content_hash_input, 1060 'wp-container-content-' 1061 ); 1062 1063 $child_layout_styles = wp_get_child_layout_style_rules( ".$container_content_class", $base_child_layout, $parent_layout ); 1064 1065 /* 1066 * Emit responsive child layout CSS using the same container-content class 1067 * so that base and responsive child layout share the exact same selector. 1068 */ 1069 foreach ( $viewport_child_layouts as $viewport_data ) { 1070 $viewport_child_styles = wp_get_child_layout_style_rules( 1071 ".$container_content_class", 1072 $base_child_layout, 1073 $parent_layout, 1074 $viewport_data['child_layout'] 1075 ); 1076 1077 foreach ( $viewport_child_styles as $index => $rule ) { 1078 $viewport_child_styles[ $index ]['rules_group'] = $viewport_data['media_query']; 1079 } 1080 1081 $child_layout_styles = array_merge( $child_layout_styles, $viewport_child_styles ); 1082 } 1083 1084 /* 1085 * Add to the style engine store to enqueue and render layout styles. 1086 * Return styles here just to check if any exist. 1087 */ 1088 $child_css = wp_style_engine_get_stylesheet_from_css_rules( 1089 $child_layout_styles, 1090 array( 1091 'context' => 'block-supports', 1092 'prettify' => false, 1093 ) 1094 ); 1095 1096 if ( $child_css ) { 1097 $outer_class_names[] = $container_content_class; 1098 } 1099 } 1100 1101 // Prep the processor for modifying the block output. 1102 $processor = new WP_HTML_Tag_Processor( $block_content ); 1103 1104 // Having no tags implies there are no tags onto which to add class names. 1105 if ( ! $processor->next_tag() ) { 1106 return $block_content; 1107 } 1108 1109 /* 1110 * A block may not support layout but still be affected by a parent block's layout. 1111 * 1112 * In these cases add the appropriate class names and then return early; there's 1113 * no need to investigate on this block whether additional layout constraints apply. 1114 */ 1115 if ( ! $block_supports_layout && ! empty( $outer_class_names ) ) { 1116 foreach ( $outer_class_names as $class_name ) { 1117 $processor->add_class( $class_name ); 1118 } 1119 return $processor->get_updated_html(); 1120 } elseif ( ! $block_supports_layout ) { 1121 // Ensure layout classnames are not injected if there is no layout support. 1122 return $block_content; 1123 } 1124 1125 $fallback_layout = $block_type->supports['layout']['default'] ?? array(); 1126 if ( empty( $fallback_layout ) ) { 1127 $fallback_layout = $block_type->supports['__experimentalLayout']['default'] ?? array(); 1128 } 1129 $used_layout = $block['attrs']['layout'] ?? $fallback_layout; 1130 1131 $class_names = array(); 1132 $layout_definitions = wp_get_layout_definitions(); 1133 1134 // Set the correct layout type for blocks using legacy content width. 1135 if ( isset( $used_layout['inherit'] ) && $used_layout['inherit'] || isset( $used_layout['contentSize'] ) && $used_layout['contentSize'] ) { 1136 $used_layout['type'] = 'constrained'; 1137 } 1138 1139 $root_padding_aware_alignments = $global_settings['useRootPaddingAwareAlignments'] ?? false; 1140 1141 if ( 1142 $root_padding_aware_alignments && 1143 isset( $used_layout['type'] ) && 1144 'constrained' === $used_layout['type'] 1145 ) { 1146 $class_names[] = 'has-global-padding'; 1147 } 1148 1149 /* 1150 * The following section was added to reintroduce a small set of layout classnames that were 1151 * removed in the 5.9 release (https://github.com/WordPress/gutenberg/issues/38719). It is 1152 * not intended to provide an extended set of classes to match all block layout attributes 1153 * here. 1154 */ 1155 $orientation = $block['attrs']['layout']['orientation'] ?? null; 1156 if ( ! empty( $orientation ) && is_string( $orientation ) ) { 1157 $class_names[] = 'is-' . sanitize_title( $orientation ); 1158 } 1159 1160 $justify_content = $block['attrs']['layout']['justifyContent'] ?? null; 1161 if ( ! empty( $justify_content ) && is_string( $justify_content ) ) { 1162 $class_names[] = 'is-content-justification-' . sanitize_title( $justify_content ); 1163 } 1164 1165 $flex_wrap = $block['attrs']['layout']['flexWrap'] ?? null; 1166 if ( ! empty( $flex_wrap ) && 'nowrap' === $flex_wrap ) { 1167 $class_names[] = 'is-nowrap'; 1168 } 1169 1170 // Get classname for layout type. 1171 if ( isset( $used_layout['type'] ) && is_string( $used_layout['type'] ) ) { 1172 $layout_classname = $layout_definitions[ $used_layout['type'] ]['className'] ?? ''; 1173 } else { 1174 $layout_classname = $layout_definitions['default']['className'] ?? ''; 1175 } 1176 1177 if ( $layout_classname && is_string( $layout_classname ) ) { 1178 $class_names[] = sanitize_title( $layout_classname ); 1179 } 1180 1181 /* 1182 * Only generate Layout styles if the theme has not opted-out. 1183 * Attribute-based Layout classnames are output in all cases. 1184 */ 1185 if ( ! current_theme_supports( 'disable-layout-styles' ) ) { 1186 1187 $gap_value = wp_sanitize_block_gap_value( $style_attr['spacing']['blockGap'] ?? null ); 1188 $fallback_gap_value = $block_type->supports['spacing']['blockGap']['__experimentalDefault'] ?? '0.5em'; 1189 $block_spacing = $style_attr['spacing'] ?? null; 1190 1191 /* 1192 * If a block's block.json skips serialization for spacing or spacing.blockGap, 1193 * don't apply the user-defined value to the styles. 1194 */ 1195 $should_skip_gap_serialization = wp_should_skip_block_supports_serialization( $block_type, 'spacing', 'blockGap' ); 1196 1197 $block_gap = $global_settings['spacing']['blockGap'] ?? null; 1198 $has_block_gap_support = isset( $block_gap ); 1199 1200 // Get default blockGap value from global styles for use in layouts like grid. 1201 // Check style variation first, then block-specific styles, then fall back to root styles. 1202 $block_name = $block['blockName'] ?? ''; 1203 if ( null === $global_styles ) { 1204 $global_styles = wp_get_global_styles(); 1205 } 1206 1207 // Check if the block has an active style variation with a blockGap value. 1208 // Only check the registry if the className contains a variation class to avoid unnecessary lookups. 1209 $variation_block_gap_value = null; 1210 $block_class_name = is_string( $block['attrs']['className'] ?? null ) 1211 ? $block['attrs']['className'] 1212 : ''; 1213 if ( $block_class_name && str_contains( $block_class_name, 'is-style-' ) && $block_name ) { 1214 $styles_registry = WP_Block_Styles_Registry::get_instance(); 1215 $registered_styles = $styles_registry->get_registered_styles_for_block( $block_name ); 1216 $variation_name = wp_get_block_style_variation_name_from_registered_style( $block_class_name, $registered_styles ); 1217 if ( $variation_name ) { 1218 $variation_block_gap_value = $global_styles['blocks'][ $block_name ]['variations'][ $variation_name ]['spacing']['blockGap'] ?? null; 1219 } 1220 } 1221 1222 $global_block_gap_value = $variation_block_gap_value ?? $global_styles['blocks'][ $block_name ]['spacing']['blockGap'] ?? $global_styles['spacing']['blockGap'] ?? null; 1223 1224 if ( null !== $global_block_gap_value ) { 1225 $fallback_gap_value = $global_block_gap_value; 1226 } 1227 1228 $container_class_hash_input = array( 1229 $used_layout, 1230 $has_block_gap_support, 1231 $gap_value, 1232 $should_skip_gap_serialization, 1233 $fallback_gap_value, 1234 $block_spacing, 1235 ); 1236 1237 foreach ( array_keys( $responsive_media_queries ) as $breakpoint ) { 1238 $viewport_style = $style_attr[ $breakpoint ] ?? null; 1239 if ( ! is_array( $viewport_style ) ) { 1240 continue; 1241 } 1242 1243 $viewport_container_layout = wp_get_layout_container_values( $viewport_style['layout'] ?? null ); 1244 if ( ! empty( $viewport_container_layout ) ) { 1245 $container_class_hash_input[] = array( 1246 'breakpoint' => $breakpoint, 1247 'layout' => $viewport_container_layout, 1248 ); 1249 } 1250 1251 if ( isset( $viewport_style['spacing']['blockGap'] ) ) { 1252 $container_class_hash_input[] = array( 1253 'breakpoint' => $breakpoint, 1254 'blockGap' => wp_sanitize_block_gap_value( $viewport_style['spacing']['blockGap'] ), 1255 ); 1256 } 1257 } 1258 1259 /* 1260 * Generates a unique ID based on all the data required to obtain the 1261 * corresponding layout style. Keeps the CSS class names the same 1262 * even for different blocks on different places, as long as they have 1263 * the same layout definition. Makes the CSS class names stable across 1264 * paginations for features like the enhanced pagination of the Query block. 1265 */ 1266 $container_class = wp_unique_id_from_values( 1267 $container_class_hash_input, 1268 'wp-container-' . sanitize_title( $block['blockName'] ) . '-is-layout-' 1269 ); 1270 1271 $style = wp_get_layout_style( 1272 ".$container_class", 1273 $used_layout, 1274 $has_block_gap_support, 1275 $gap_value, 1276 $should_skip_gap_serialization, 1277 $fallback_gap_value, 1278 $block_spacing 1279 ); 1280 1281 /* 1282 * Emit responsive container layout styles using the same $container_class 1283 * selector as the base layout so they target the inner block wrapper. 1284 */ 1285 foreach ( $responsive_media_queries as $breakpoint => $media_query ) { 1286 $viewport_style = $style_attr[ $breakpoint ] ?? null; 1287 if ( ! is_array( $viewport_style ) ) { 1288 continue; 1289 } 1290 1291 $viewport_container_layout = wp_get_layout_container_values( $viewport_style['layout'] ?? null ); 1292 $has_viewport_layout = ! empty( $viewport_container_layout ); 1293 $has_viewport_block_gap = isset( $viewport_style['spacing']['blockGap'] ); 1294 1295 if ( ! $has_viewport_layout && ! $has_viewport_block_gap ) { 1296 continue; 1297 } 1298 1299 $viewport_gap_value = $has_viewport_block_gap 1300 ? wp_sanitize_block_gap_value( $viewport_style['spacing']['blockGap'] ) 1301 : $gap_value; 1302 1303 $viewport_block_spacing = is_array( $viewport_style['spacing'] ?? null ) 1304 ? array_replace( is_array( $block_spacing ) ? $block_spacing : array(), $viewport_style['spacing'] ) 1305 : $block_spacing; 1306 1307 $viewport_styles = wp_get_layout_style( 1308 ".$container_class", 1309 $used_layout, 1310 $has_block_gap_support, 1311 $viewport_gap_value, 1312 $should_skip_gap_serialization, 1313 $fallback_gap_value, 1314 $viewport_block_spacing, 1315 array( 1316 'rules_group' => $media_query, 1317 'viewport_overrides' => $viewport_container_layout, 1318 'has_block_gap_override' => $has_viewport_block_gap, 1319 ) 1320 ); 1321 1322 if ( ! empty( $viewport_styles ) && ! in_array( $container_class, $class_names, true ) ) { 1323 $class_names[] = $container_class; 1324 } 1325 } 1326 1327 // Only add container class and enqueue block support styles if unique styles were generated. 1328 if ( ! empty( $style ) ) { 1329 $class_names[] = $container_class; 1330 } 1331 } 1332 1333 // Add combined layout and block classname for global styles to hook onto. 1334 $split_block_name = explode( '/', $block['blockName'] ); 1335 $full_block_name = 'core' === $split_block_name[0] ? end( $split_block_name ) : implode( '-', $split_block_name ); 1336 $class_names[] = 'wp-block-' . $full_block_name . '-' . $layout_classname; 1337 1338 // Add classes to the outermost HTML tag if necessary. 1339 if ( ! empty( $outer_class_names ) ) { 1340 foreach ( $outer_class_names as $outer_class_name ) { 1341 $processor->add_class( $outer_class_name ); 1342 } 1343 } 1344 1345 /** 1346 * Attempts to refer to the inner-block wrapping element by its class attribute. 1347 * 1348 * When examining a block's inner content, if a block has inner blocks, then 1349 * the first content item will likely be a text (HTML) chunk immediately 1350 * preceding the inner blocks. The last HTML tag in that chunk would then be 1351 * an opening tag for an element that wraps the inner blocks. 1352 * 1353 * There's no reliable way to associate this wrapper in $block_content because 1354 * it may have changed during the rendering pipeline (as inner contents is 1355 * provided before rendering) and through previous filters. In many cases, 1356 * however, the `class` attribute will be a good-enough identifier, so this 1357 * code finds the last tag in that chunk and stores the `class` attribute 1358 * so that it can be used later when working through the rendered block output 1359 * to identify the wrapping element and add the remaining class names to it. 1360 * 1361 * It's also possible that no inner block wrapper even exists. If that's the 1362 * case this code could apply the class names to an invalid element. 1363 * 1364 * Example: 1365 * 1366 * $block['innerBlocks'] = array( $list_item ); 1367 * $block['innerContent'] = array( '<ul class="list-wrapper is-unordered">', null, '</ul>' ); 1368 * 1369 * // After rendering, the initial contents may have been modified by other renderers or filters. 1370 * $block_content = <<<HTML 1371 * <figure> 1372 * <ul class="annotated-list list-wrapper is-unordered"> 1373 * <li>Code</li> 1374 * </ul><figcaption>It's a list!</figcaption> 1375 * </figure> 1376 * HTML; 1377 * 1378 * Although it is possible that the original block-wrapper classes are changed in $block_content 1379 * from how they appear in $block['innerContent'], it's likely that the original class attributes 1380 * are still present in the wrapper as they are in this example. Frequently, additional classes 1381 * will also be present; rarely should classes be removed. 1382 * 1383 * @todo Find a better way to match the first inner block. If it's possible to identify where the 1384 * first inner block starts, then it will be possible to find the last tag before it starts 1385 * and then that tag, if an opening tag, can be solidly identified as a wrapping element. 1386 * Can some unique value or class or ID be added to the inner blocks when they process 1387 * so that they can be extracted here safely without guessing? Can the block rendering function 1388 * return information about where the rendered inner blocks start? 1389 * 1390 * @var string|null 1391 */ 1392 $inner_block_wrapper_classes = null; 1393 $first_chunk = $block['innerContent'][0] ?? null; 1394 if ( is_string( $first_chunk ) && count( $block['innerContent'] ) > 1 ) { 1395 $first_chunk_processor = new WP_HTML_Tag_Processor( $first_chunk ); 1396 /* 1397 * Use a stack to track open elements as tags are visited. Void elements 1398 * (those without a matching closing tag) are excluded so they don't 1399 * accumulate on the stack. At the end of the chunk, every element still 1400 * on the stack is unclosed — meaning its closing tag lives in a later 1401 * innerContent entry alongside the inner blocks, which makes it the 1402 * inner-block container. Elements that open and close within this chunk 1403 * are siblings that precede the inner blocks and should be ignored. 1404 * The last unclosed element with a class attribute is the best candidate 1405 * for the inner-block wrapper. 1406 */ 1407 $tag_stack = array(); 1408 while ( $first_chunk_processor->next_tag( array( 'tag_closers' => 'visit' ) ) ) { 1409 if ( $first_chunk_processor->is_tag_closer() ) { 1410 array_pop( $tag_stack ); 1411 } elseif ( ! WP_HTML_Processor::is_void( $first_chunk_processor->get_tag() ) ) { 1412 $tag_stack[] = $first_chunk_processor->get_attribute( 'class' ); 1413 } 1414 } 1415 foreach ( array_reverse( $tag_stack ) as $class_attribute ) { 1416 if ( is_string( $class_attribute ) && ! empty( $class_attribute ) ) { 1417 $inner_block_wrapper_classes = $class_attribute; 1418 break; 1419 } 1420 } 1421 } 1422 1423 /* 1424 * If necessary, advance to what is likely to be an inner block wrapper tag. 1425 * 1426 * This advances until it finds the first tag containing the original class 1427 * attribute from above. If none is found it will scan to the end of the block 1428 * and fail to add any class names. 1429 * 1430 * If there is no block wrapper it won't advance at all, in which case the 1431 * class names will be added to the first and outermost tag of the block. 1432 * For cases where this outermost tag is the only tag surrounding inner 1433 * blocks then the outer wrapper and inner wrapper are the same. 1434 */ 1435 do { 1436 if ( ! $inner_block_wrapper_classes ) { 1437 break; 1438 } 1439 1440 $class_attribute = $processor->get_attribute( 'class' ); 1441 if ( is_string( $class_attribute ) && str_contains( $class_attribute, $inner_block_wrapper_classes ) ) { 1442 break; 1443 } 1444 } while ( $processor->next_tag() ); 1445 1446 // Add the remaining class names. 1447 foreach ( $class_names as $class_name ) { 1448 $processor->add_class( $class_name ); 1449 } 1450 1451 return $processor->get_updated_html(); 1452 } 1453 1454 /** 1455 * Check if the parent block exists and if it has a layout attribute. 1456 * If it does, add the parent layout to the parsed block 1457 * 1458 * @since 6.6.0 1459 * @access private 1460 * 1461 * @param array $parsed_block The parsed block. 1462 * @param array $source_block The source block. 1463 * @param WP_Block $parent_block The parent block. 1464 * @return array The parsed block with parent layout attribute if it exists. 1465 */ 1466 function wp_add_parent_layout_to_parsed_block( $parsed_block, $source_block, $parent_block ) { 1467 if ( $parent_block && isset( $parent_block->parsed_block['attrs']['layout'] ) ) { 1468 $parsed_block['parentLayout'] = $parent_block->parsed_block['attrs']['layout']; 1469 } 1470 return $parsed_block; 1471 } 1472 1473 add_filter( 'render_block_data', 'wp_add_parent_layout_to_parsed_block', 10, 3 ); 1474 1475 // Register the block support. 1476 WP_Block_Supports::get_instance()->register( 1477 'layout', 1478 array( 1479 'register_attribute' => 'wp_register_layout_support', 1480 ) 1481 ); 1482 add_filter( 'render_block', 'wp_render_layout_support_flag', 10, 2 ); 1483 1484 /** 1485 * For themes without theme.json file, make sure 1486 * to restore the inner div for the group block 1487 * to avoid breaking styles relying on that div. 1488 * 1489 * @since 5.8.0 1490 * @since 6.6.1 Removed inner container from Grid variations. 1491 * @access private 1492 * 1493 * @param string $block_content Rendered block content. 1494 * @param array $block Block object. 1495 * @return string Filtered block content. 1496 */ 1497 function wp_restore_group_inner_container( $block_content, $block ) { 1498 $tag_name_attr = $block['attrs']['tagName'] ?? null; 1499 $tag_name = is_string( $tag_name_attr ) ? $tag_name_attr : 'div'; 1500 $group_with_inner_container_regex = sprintf( 1501 '/(^\s*<%1$s\b[^>]*wp-block-group(\s|")[^>]*>)(\s*<div\b[^>]*wp-block-group__inner-container(\s|")[^>]*>)((.|\S|\s)*)/U', 1502 preg_quote( $tag_name, '/' ) 1503 ); 1504 1505 if ( 1506 wp_theme_has_theme_json() || 1507 1 === preg_match( $group_with_inner_container_regex, $block_content ) || 1508 ( isset( $block['attrs']['layout']['type'] ) && ( 'flex' === $block['attrs']['layout']['type'] || 'grid' === $block['attrs']['layout']['type'] ) ) 1509 ) { 1510 return $block_content; 1511 } 1512 1513 /* 1514 * This filter runs after the layout classnames have been added to the block, so they 1515 * have to be removed from the outer wrapper and then added to the inner. 1516 */ 1517 $layout_classes = array(); 1518 $processor = new WP_HTML_Tag_Processor( $block_content ); 1519 1520 if ( $processor->next_tag( array( 'class_name' => 'wp-block-group' ) ) ) { 1521 foreach ( $processor->class_list() as $class_name ) { 1522 if ( str_contains( $class_name, 'is-layout-' ) ) { 1523 $layout_classes[] = $class_name; 1524 $processor->remove_class( $class_name ); 1525 } 1526 } 1527 } 1528 1529 $content_without_layout_classes = $processor->get_updated_html(); 1530 $replace_regex = sprintf( 1531 '/(^\s*<%1$s\b[^>]*wp-block-group[^>]*>)(.*)(<\/%1$s>\s*$)/ms', 1532 preg_quote( $tag_name, '/' ) 1533 ); 1534 $updated_content = preg_replace_callback( 1535 $replace_regex, 1536 static function ( $matches ) { 1537 return $matches[1] . '<div class="wp-block-group__inner-container">' . $matches[2] . '</div>' . $matches[3]; 1538 }, 1539 $content_without_layout_classes 1540 ); 1541 1542 // Add layout classes to inner wrapper. 1543 if ( ! empty( $layout_classes ) ) { 1544 $processor = new WP_HTML_Tag_Processor( $updated_content ); 1545 if ( $processor->next_tag( array( 'class_name' => 'wp-block-group__inner-container' ) ) ) { 1546 foreach ( $layout_classes as $class_name ) { 1547 $processor->add_class( $class_name ); 1548 } 1549 } 1550 $updated_content = $processor->get_updated_html(); 1551 } 1552 return $updated_content; 1553 } 1554 1555 add_filter( 'render_block_core/group', 'wp_restore_group_inner_container', 10, 2 ); 1556 1557 /** 1558 * For themes without theme.json file, make sure 1559 * to restore the outer div for the aligned image block 1560 * to avoid breaking styles relying on that div. 1561 * 1562 * @since 6.0.0 1563 * @access private 1564 * 1565 * @param string $block_content Rendered block content. 1566 * @param array $block Block object. 1567 * @return string Filtered block content. 1568 */ 1569 function wp_restore_image_outer_container( $block_content, $block ) { 1570 if ( wp_theme_has_theme_json() ) { 1571 return $block_content; 1572 } 1573 1574 $figure_processor = new WP_HTML_Tag_Processor( $block_content ); 1575 if ( 1576 ! $figure_processor->next_tag( 'FIGURE' ) || 1577 ! $figure_processor->has_class( 'wp-block-image' ) || 1578 ! ( 1579 $figure_processor->has_class( 'alignleft' ) || 1580 $figure_processor->has_class( 'aligncenter' ) || 1581 $figure_processor->has_class( 'alignright' ) 1582 ) 1583 ) { 1584 return $block_content; 1585 } 1586 1587 /* 1588 * The next section of code wraps the existing figure in a new DIV element. 1589 * While doing it, it needs to transfer the layout and the additional CSS 1590 * class names from the original figure upward to the wrapper. 1591 * 1592 * Example: 1593 * 1594 * // From this… 1595 * <!-- wp:image {"className":"hires"} --> 1596 * <figure class="wp-block-image wide hires">… 1597 * 1598 * // To this… 1599 * <div class="wp-block-image hires"><figure class="wide">… 1600 */ 1601 $wrapper_processor = new WP_HTML_Tag_Processor( '<div>' ); 1602 $wrapper_processor->next_token(); 1603 $wrapper_processor->set_attribute( 1604 'class', 1605 is_string( $block['attrs']['className'] ?? null ) 1606 ? "wp-block-image {$block['attrs']['className']}" 1607 : 'wp-block-image' 1608 ); 1609 1610 // And remove them from the existing content; it has been transferred upward. 1611 $figure_processor->remove_class( 'wp-block-image' ); 1612 foreach ( $wrapper_processor->class_list() as $class_name ) { 1613 $figure_processor->remove_class( $class_name ); 1614 } 1615 1616 return "{$wrapper_processor->get_updated_html()}{$figure_processor->get_updated_html()}</div>"; 1617 } 1618 1619 add_filter( 'render_block_core/image', 'wp_restore_image_outer_container', 10, 2 );
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| Generated : Mon Aug 24 08:20:24 2026 | Cross-referenced by PHPXref |