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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * Functions related to registering and parsing blocks. 4 * 5 * @package WordPress 6 * @subpackage Blocks 7 * @since 5.0.0 8 */ 9 10 /** 11 * Removes the block asset's path prefix if provided. 12 * 13 * @since 5.5.0 14 * 15 * @param string $asset_handle_or_path Asset handle or prefixed path. 16 * @return string Path without the prefix or the original value. 17 */ 18 function remove_block_asset_path_prefix( $asset_handle_or_path ) { 19 $path_prefix = 'file:'; 20 if ( ! str_starts_with( $asset_handle_or_path, $path_prefix ) ) { 21 return $asset_handle_or_path; 22 } 23 $path = substr( 24 $asset_handle_or_path, 25 strlen( $path_prefix ) 26 ); 27 if ( str_starts_with( $path, './' ) ) { 28 $path = substr( $path, 2 ); 29 } 30 return $path; 31 } 32 33 /** 34 * Generates the name for an asset based on the name of the block 35 * and the field name provided. 36 * 37 * @since 5.5.0 38 * @since 6.1.0 Added `$index` parameter. 39 * @since 6.5.0 Added support for `viewScriptModule` field. 40 * 41 * @param string $block_name Name of the block. 42 * @param string $field_name Name of the metadata field. 43 * @param int $index Optional. Index of the asset when multiple items passed. 44 * Default 0. 45 * @return string Generated asset name for the block's field. 46 */ 47 function generate_block_asset_handle( $block_name, $field_name, $index = 0 ) { 48 if ( str_starts_with( $block_name, 'core/' ) ) { 49 $asset_handle = str_replace( 'core/', 'wp-block-', $block_name ); 50 if ( str_starts_with( $field_name, 'editor' ) ) { 51 $asset_handle .= '-editor'; 52 } 53 if ( str_starts_with( $field_name, 'view' ) ) { 54 $asset_handle .= '-view'; 55 } 56 if ( str_ends_with( strtolower( $field_name ), 'scriptmodule' ) ) { 57 $asset_handle .= '-script-module'; 58 } 59 if ( $index > 0 ) { 60 $asset_handle .= '-' . ( $index + 1 ); 61 } 62 return $asset_handle; 63 } 64 65 $field_mappings = array( 66 'editorScript' => 'editor-script', 67 'editorStyle' => 'editor-style', 68 'script' => 'script', 69 'style' => 'style', 70 'viewScript' => 'view-script', 71 'viewScriptModule' => 'view-script-module', 72 'viewStyle' => 'view-style', 73 ); 74 $asset_handle = str_replace( '/', '-', $block_name ) . 75 '-' . $field_mappings[ $field_name ]; 76 if ( $index > 0 ) { 77 $asset_handle .= '-' . ( $index + 1 ); 78 } 79 return $asset_handle; 80 } 81 82 /** 83 * Gets the URL to a block asset. 84 * 85 * @since 6.4.0 86 * 87 * @param string $path A normalized path to a block asset. 88 * @return string|false The URL to the block asset or false on failure. 89 */ 90 function get_block_asset_url( $path ) { 91 if ( empty( $path ) ) { 92 return false; 93 } 94 95 // Path needs to be normalized to work in Windows env. 96 static $wpinc_path_norm = ''; 97 if ( ! $wpinc_path_norm ) { 98 $wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) ); 99 } 100 101 if ( str_starts_with( $path, $wpinc_path_norm ) ) { 102 return includes_url( str_replace( $wpinc_path_norm, '', $path ) ); 103 } 104 105 static $template_paths_norm = array(); 106 107 $template = get_template(); 108 if ( ! isset( $template_paths_norm[ $template ] ) ) { 109 $template_paths_norm[ $template ] = wp_normalize_path( realpath( get_template_directory() ) ); 110 } 111 112 if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $template ] ) ) ) { 113 return get_theme_file_uri( str_replace( $template_paths_norm[ $template ], '', $path ) ); 114 } 115 116 if ( is_child_theme() ) { 117 $stylesheet = get_stylesheet(); 118 if ( ! isset( $template_paths_norm[ $stylesheet ] ) ) { 119 $template_paths_norm[ $stylesheet ] = wp_normalize_path( realpath( get_stylesheet_directory() ) ); 120 } 121 122 if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $stylesheet ] ) ) ) { 123 return get_theme_file_uri( str_replace( $template_paths_norm[ $stylesheet ], '', $path ) ); 124 } 125 } 126 127 return plugins_url( basename( $path ), $path ); 128 } 129 130 /** 131 * Finds a script module ID for the selected block metadata field. It detects 132 * when a path to file was provided and optionally finds a corresponding asset 133 * file with details necessary to register the script module under with an 134 * automatically generated module ID. It returns unprocessed script module 135 * ID otherwise. 136 * 137 * @since 6.5.0 138 * 139 * @param array $metadata Block metadata. 140 * @param string $field_name Field name to pick from metadata. 141 * @param int $index Optional. Index of the script module ID to register when multiple 142 * items passed. Default 0. 143 * @return string|false Script module ID or false on failure. 144 */ 145 function register_block_script_module_id( $metadata, $field_name, $index = 0 ) { 146 if ( empty( $metadata[ $field_name ] ) ) { 147 return false; 148 } 149 150 $module_id = $metadata[ $field_name ]; 151 if ( is_array( $module_id ) ) { 152 if ( empty( $module_id[ $index ] ) ) { 153 return false; 154 } 155 $module_id = $module_id[ $index ]; 156 } 157 158 $module_path = remove_block_asset_path_prefix( $module_id ); 159 if ( $module_id === $module_path ) { 160 return $module_id; 161 } 162 163 $path = dirname( $metadata['file'] ); 164 $module_asset_raw_path = $path . '/' . substr_replace( $module_path, '.asset.php', - strlen( '.js' ) ); 165 $module_id = generate_block_asset_handle( $metadata['name'], $field_name, $index ); 166 $module_asset_path = wp_normalize_path( 167 realpath( $module_asset_raw_path ) 168 ); 169 170 $module_path_norm = wp_normalize_path( realpath( $path . '/' . $module_path ) ); 171 $module_uri = get_block_asset_url( $module_path_norm ); 172 173 $module_asset = ! empty( $module_asset_path ) ? require $module_asset_path : array(); 174 $module_dependencies = isset( $module_asset['dependencies'] ) ? $module_asset['dependencies'] : array(); 175 $block_version = isset( $metadata['version'] ) ? $metadata['version'] : false; 176 $module_version = isset( $module_asset['version'] ) ? $module_asset['version'] : $block_version; 177 178 wp_register_script_module( 179 $module_id, 180 $module_uri, 181 $module_dependencies, 182 $module_version 183 ); 184 185 return $module_id; 186 } 187 188 /** 189 * Finds a script handle for the selected block metadata field. It detects 190 * when a path to file was provided and optionally finds a corresponding asset 191 * file with details necessary to register the script under automatically 192 * generated handle name. It returns unprocessed script handle otherwise. 193 * 194 * @since 5.5.0 195 * @since 6.1.0 Added `$index` parameter. 196 * @since 6.5.0 The asset file is optional. Added script handle support in the asset file. 197 * 198 * @param array $metadata Block metadata. 199 * @param string $field_name Field name to pick from metadata. 200 * @param int $index Optional. Index of the script to register when multiple items passed. 201 * Default 0. 202 * @return string|false Script handle provided directly or created through 203 * script's registration, or false on failure. 204 */ 205 function register_block_script_handle( $metadata, $field_name, $index = 0 ) { 206 if ( empty( $metadata[ $field_name ] ) ) { 207 return false; 208 } 209 210 $script_handle_or_path = $metadata[ $field_name ]; 211 if ( is_array( $script_handle_or_path ) ) { 212 if ( empty( $script_handle_or_path[ $index ] ) ) { 213 return false; 214 } 215 $script_handle_or_path = $script_handle_or_path[ $index ]; 216 } 217 218 $script_path = remove_block_asset_path_prefix( $script_handle_or_path ); 219 if ( $script_handle_or_path === $script_path ) { 220 return $script_handle_or_path; 221 } 222 223 $path = dirname( $metadata['file'] ); 224 $script_asset_raw_path = $path . '/' . substr_replace( $script_path, '.asset.php', - strlen( '.js' ) ); 225 $script_asset_path = wp_normalize_path( 226 realpath( $script_asset_raw_path ) 227 ); 228 229 // Asset file for blocks is optional. See https://core.trac.wordpress.org/ticket/60460. 230 $script_asset = ! empty( $script_asset_path ) ? require $script_asset_path : array(); 231 $script_handle = isset( $script_asset['handle'] ) ? 232 $script_asset['handle'] : 233 generate_block_asset_handle( $metadata['name'], $field_name, $index ); 234 if ( wp_script_is( $script_handle, 'registered' ) ) { 235 return $script_handle; 236 } 237 238 $script_path_norm = wp_normalize_path( realpath( $path . '/' . $script_path ) ); 239 $script_uri = get_block_asset_url( $script_path_norm ); 240 $script_dependencies = isset( $script_asset['dependencies'] ) ? $script_asset['dependencies'] : array(); 241 $block_version = isset( $metadata['version'] ) ? $metadata['version'] : false; 242 $script_version = isset( $script_asset['version'] ) ? $script_asset['version'] : $block_version; 243 $script_args = array(); 244 if ( 'viewScript' === $field_name && $script_uri ) { 245 $script_args['strategy'] = 'defer'; 246 } 247 248 $result = wp_register_script( 249 $script_handle, 250 $script_uri, 251 $script_dependencies, 252 $script_version, 253 $script_args 254 ); 255 if ( ! $result ) { 256 return false; 257 } 258 259 if ( ! empty( $metadata['textdomain'] ) && in_array( 'wp-i18n', $script_dependencies, true ) ) { 260 wp_set_script_translations( $script_handle, $metadata['textdomain'] ); 261 } 262 263 return $script_handle; 264 } 265 266 /** 267 * Finds a style handle for the block metadata field. It detects when a path 268 * to file was provided and registers the style under automatically 269 * generated handle name. It returns unprocessed style handle otherwise. 270 * 271 * @since 5.5.0 272 * @since 6.1.0 Added `$index` parameter. 273 * 274 * @param array $metadata Block metadata. 275 * @param string $field_name Field name to pick from metadata. 276 * @param int $index Optional. Index of the style to register when multiple items passed. 277 * Default 0. 278 * @return string|false Style handle provided directly or created through 279 * style's registration, or false on failure. 280 */ 281 function register_block_style_handle( $metadata, $field_name, $index = 0 ) { 282 if ( empty( $metadata[ $field_name ] ) ) { 283 return false; 284 } 285 286 $style_handle = $metadata[ $field_name ]; 287 if ( is_array( $style_handle ) ) { 288 if ( empty( $style_handle[ $index ] ) ) { 289 return false; 290 } 291 $style_handle = $style_handle[ $index ]; 292 } 293 294 $style_handle_name = generate_block_asset_handle( $metadata['name'], $field_name, $index ); 295 // If the style handle is already registered, skip re-registering. 296 if ( wp_style_is( $style_handle_name, 'registered' ) ) { 297 return $style_handle_name; 298 } 299 300 static $wpinc_path_norm = ''; 301 if ( ! $wpinc_path_norm ) { 302 $wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) ); 303 } 304 305 $is_core_block = isset( $metadata['file'] ) && str_starts_with( $metadata['file'], $wpinc_path_norm ); 306 // Skip registering individual styles for each core block when a bundled version provided. 307 if ( $is_core_block && ! wp_should_load_separate_core_block_assets() ) { 308 return false; 309 } 310 311 $style_path = remove_block_asset_path_prefix( $style_handle ); 312 $is_style_handle = $style_handle === $style_path; 313 // Allow only passing style handles for core blocks. 314 if ( $is_core_block && ! $is_style_handle ) { 315 return false; 316 } 317 // Return the style handle unless it's the first item for every core block that requires special treatment. 318 if ( $is_style_handle && ! ( $is_core_block && 0 === $index ) ) { 319 return $style_handle; 320 } 321 322 // Check whether styles should have a ".min" suffix or not. 323 $suffix = SCRIPT_DEBUG ? '' : '.min'; 324 if ( $is_core_block ) { 325 $style_path = ( 'editorStyle' === $field_name ) ? "editor{$suffix}.css" : "style{$suffix}.css"; 326 } 327 328 $style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) ); 329 $style_uri = get_block_asset_url( $style_path_norm ); 330 331 $version = ! $is_core_block && isset( $metadata['version'] ) ? $metadata['version'] : false; 332 $result = wp_register_style( 333 $style_handle_name, 334 $style_uri, 335 array(), 336 $version 337 ); 338 if ( ! $result ) { 339 return false; 340 } 341 342 if ( $style_uri ) { 343 wp_style_add_data( $style_handle_name, 'path', $style_path_norm ); 344 345 if ( $is_core_block ) { 346 $rtl_file = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $style_path_norm ); 347 } else { 348 $rtl_file = str_replace( '.css', '-rtl.css', $style_path_norm ); 349 } 350 351 if ( is_rtl() && file_exists( $rtl_file ) ) { 352 wp_style_add_data( $style_handle_name, 'rtl', 'replace' ); 353 wp_style_add_data( $style_handle_name, 'suffix', $suffix ); 354 wp_style_add_data( $style_handle_name, 'path', $rtl_file ); 355 } 356 } 357 358 return $style_handle_name; 359 } 360 361 /** 362 * Gets i18n schema for block's metadata read from `block.json` file. 363 * 364 * @since 5.9.0 365 * 366 * @return object The schema for block's metadata. 367 */ 368 function get_block_metadata_i18n_schema() { 369 static $i18n_block_schema; 370 371 if ( ! isset( $i18n_block_schema ) ) { 372 $i18n_block_schema = wp_json_file_decode( __DIR__ . '/block-i18n.json' ); 373 } 374 375 return $i18n_block_schema; 376 } 377 378 /** 379 * Registers all block types from a block metadata collection. 380 * 381 * This can either reference a previously registered metadata collection or, if the `$manifest` parameter is provided, 382 * register the metadata collection directly within the same function call. 383 * 384 * @since 6.8.0 385 * @see wp_register_block_metadata_collection() 386 * @see register_block_type_from_metadata() 387 * 388 * @param string $path The absolute base path for the collection ( e.g., WP_PLUGIN_DIR . '/my-plugin/blocks/' ). 389 * @param string $manifest Optional. The absolute path to the manifest file containing the metadata collection, in 390 * order to register the collection. If this parameter is not provided, the `$path` parameter 391 * must reference a previously registered block metadata collection. 392 */ 393 function wp_register_block_types_from_metadata_collection( $path, $manifest = '' ) { 394 if ( $manifest ) { 395 wp_register_block_metadata_collection( $path, $manifest ); 396 } 397 398 $block_metadata_files = WP_Block_Metadata_Registry::get_collection_block_metadata_files( $path ); 399 foreach ( $block_metadata_files as $block_metadata_file ) { 400 register_block_type_from_metadata( $block_metadata_file ); 401 } 402 } 403 404 /** 405 * Registers a block metadata collection. 406 * 407 * This function allows core and third-party plugins to register their block metadata 408 * collections in a centralized location. Registering collections can improve performance 409 * by avoiding multiple reads from the filesystem and parsing JSON. 410 * 411 * @since 6.7.0 412 * 413 * @param string $path The base path in which block files for the collection reside. 414 * @param string $manifest The path to the manifest file for the collection. 415 */ 416 function wp_register_block_metadata_collection( $path, $manifest ) { 417 WP_Block_Metadata_Registry::register_collection( $path, $manifest ); 418 } 419 420 /** 421 * Registers a block type from the metadata stored in the `block.json` file. 422 * 423 * @since 5.5.0 424 * @since 5.7.0 Added support for `textdomain` field and i18n handling for all translatable fields. 425 * @since 5.9.0 Added support for `variations` and `viewScript` fields. 426 * @since 6.1.0 Added support for `render` field. 427 * @since 6.3.0 Added `selectors` field. 428 * @since 6.4.0 Added support for `blockHooks` field. 429 * @since 6.5.0 Added support for `allowedBlocks`, `viewScriptModule`, and `viewStyle` fields. 430 * @since 6.7.0 Allow PHP filename as `variations` argument. 431 * 432 * @param string $file_or_folder Path to the JSON file with metadata definition for 433 * the block or path to the folder where the `block.json` file is located. 434 * If providing the path to a JSON file, the filename must end with `block.json`. 435 * @param array $args Optional. Array of block type arguments. Accepts any public property 436 * of `WP_Block_Type`. See WP_Block_Type::__construct() for information 437 * on accepted arguments. Default empty array. 438 * @return WP_Block_Type|false The registered block type on success, or false on failure. 439 */ 440 function register_block_type_from_metadata( $file_or_folder, $args = array() ) { 441 /* 442 * Get an array of metadata from a PHP file. 443 * This improves performance for core blocks as it's only necessary to read a single PHP file 444 * instead of reading a JSON file per-block, and then decoding from JSON to PHP. 445 * Using a static variable ensures that the metadata is only read once per request. 446 */ 447 448 $file_or_folder = wp_normalize_path( $file_or_folder ); 449 450 $metadata_file = ( ! str_ends_with( $file_or_folder, 'block.json' ) ) ? 451 trailingslashit( $file_or_folder ) . 'block.json' : 452 $file_or_folder; 453 454 $is_core_block = str_starts_with( $file_or_folder, wp_normalize_path( ABSPATH . WPINC ) ); 455 $metadata_file_exists = $is_core_block || file_exists( $metadata_file ); 456 $registry_metadata = WP_Block_Metadata_Registry::get_metadata( $file_or_folder ); 457 458 if ( $registry_metadata ) { 459 $metadata = $registry_metadata; 460 } elseif ( $metadata_file_exists ) { 461 $metadata = wp_json_file_decode( $metadata_file, array( 'associative' => true ) ); 462 } else { 463 $metadata = array(); 464 } 465 466 if ( ! is_array( $metadata ) || ( empty( $metadata['name'] ) && empty( $args['name'] ) ) ) { 467 return false; 468 } 469 470 $metadata['file'] = $metadata_file_exists ? wp_normalize_path( realpath( $metadata_file ) ) : null; 471 472 /** 473 * Filters the metadata provided for registering a block type. 474 * 475 * @since 5.7.0 476 * 477 * @param array $metadata Metadata for registering a block type. 478 */ 479 $metadata = apply_filters( 'block_type_metadata', $metadata ); 480 481 // Add `style` and `editor_style` for core blocks if missing. 482 if ( ! empty( $metadata['name'] ) && str_starts_with( $metadata['name'], 'core/' ) ) { 483 $block_name = str_replace( 'core/', '', $metadata['name'] ); 484 485 if ( ! isset( $metadata['style'] ) ) { 486 $metadata['style'] = "wp-block-$block_name"; 487 } 488 if ( current_theme_supports( 'wp-block-styles' ) && wp_should_load_separate_core_block_assets() ) { 489 $metadata['style'] = (array) $metadata['style']; 490 $metadata['style'][] = "wp-block-{$block_name}-theme"; 491 } 492 if ( ! isset( $metadata['editorStyle'] ) ) { 493 $metadata['editorStyle'] = "wp-block-{$block_name}-editor"; 494 } 495 } 496 497 $settings = array(); 498 $property_mappings = array( 499 'apiVersion' => 'api_version', 500 'name' => 'name', 501 'title' => 'title', 502 'category' => 'category', 503 'parent' => 'parent', 504 'ancestor' => 'ancestor', 505 'icon' => 'icon', 506 'description' => 'description', 507 'keywords' => 'keywords', 508 'attributes' => 'attributes', 509 'providesContext' => 'provides_context', 510 'usesContext' => 'uses_context', 511 'selectors' => 'selectors', 512 'supports' => 'supports', 513 'styles' => 'styles', 514 'variations' => 'variations', 515 'example' => 'example', 516 'allowedBlocks' => 'allowed_blocks', 517 ); 518 $textdomain = ! empty( $metadata['textdomain'] ) ? $metadata['textdomain'] : null; 519 $i18n_schema = get_block_metadata_i18n_schema(); 520 521 foreach ( $property_mappings as $key => $mapped_key ) { 522 if ( isset( $metadata[ $key ] ) ) { 523 $settings[ $mapped_key ] = $metadata[ $key ]; 524 if ( $metadata_file_exists && $textdomain && isset( $i18n_schema->$key ) ) { 525 $settings[ $mapped_key ] = translate_settings_using_i18n_schema( $i18n_schema->$key, $settings[ $key ], $textdomain ); 526 } 527 } 528 } 529 530 if ( ! empty( $metadata['render'] ) ) { 531 $template_path = wp_normalize_path( 532 realpath( 533 dirname( $metadata['file'] ) . '/' . 534 remove_block_asset_path_prefix( $metadata['render'] ) 535 ) 536 ); 537 if ( $template_path ) { 538 /** 539 * Renders the block on the server. 540 * 541 * @since 6.1.0 542 * 543 * @param array $attributes Block attributes. 544 * @param string $content Block default content. 545 * @param WP_Block $block Block instance. 546 * 547 * @return string Returns the block content. 548 */ 549 $settings['render_callback'] = static function ( $attributes, $content, $block ) use ( $template_path ) { 550 ob_start(); 551 require $template_path; 552 return ob_get_clean(); 553 }; 554 } 555 } 556 557 // If `variations` is a string, it's the name of a PHP file that 558 // generates the variations. 559 if ( ! empty( $metadata['variations'] ) && is_string( $metadata['variations'] ) ) { 560 $variations_path = wp_normalize_path( 561 realpath( 562 dirname( $metadata['file'] ) . '/' . 563 remove_block_asset_path_prefix( $metadata['variations'] ) 564 ) 565 ); 566 if ( $variations_path ) { 567 /** 568 * Generates the list of block variations. 569 * 570 * @since 6.7.0 571 * 572 * @return string Returns the list of block variations. 573 */ 574 $settings['variation_callback'] = static function () use ( $variations_path ) { 575 $variations = require $variations_path; 576 return $variations; 577 }; 578 // The block instance's `variations` field is only allowed to be an array 579 // (of known block variations). We unset it so that the block instance will 580 // provide a getter that returns the result of the `variation_callback` instead. 581 unset( $settings['variations'] ); 582 } 583 } 584 585 $settings = array_merge( $settings, $args ); 586 587 $script_fields = array( 588 'editorScript' => 'editor_script_handles', 589 'script' => 'script_handles', 590 'viewScript' => 'view_script_handles', 591 ); 592 foreach ( $script_fields as $metadata_field_name => $settings_field_name ) { 593 if ( ! empty( $settings[ $metadata_field_name ] ) ) { 594 $metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ]; 595 } 596 if ( ! empty( $metadata[ $metadata_field_name ] ) ) { 597 $scripts = $metadata[ $metadata_field_name ]; 598 $processed_scripts = array(); 599 if ( is_array( $scripts ) ) { 600 for ( $index = 0; $index < count( $scripts ); $index++ ) { 601 $result = register_block_script_handle( 602 $metadata, 603 $metadata_field_name, 604 $index 605 ); 606 if ( $result ) { 607 $processed_scripts[] = $result; 608 } 609 } 610 } else { 611 $result = register_block_script_handle( 612 $metadata, 613 $metadata_field_name 614 ); 615 if ( $result ) { 616 $processed_scripts[] = $result; 617 } 618 } 619 $settings[ $settings_field_name ] = $processed_scripts; 620 } 621 } 622 623 $module_fields = array( 624 'viewScriptModule' => 'view_script_module_ids', 625 ); 626 foreach ( $module_fields as $metadata_field_name => $settings_field_name ) { 627 if ( ! empty( $settings[ $metadata_field_name ] ) ) { 628 $metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ]; 629 } 630 if ( ! empty( $metadata[ $metadata_field_name ] ) ) { 631 $modules = $metadata[ $metadata_field_name ]; 632 $processed_modules = array(); 633 if ( is_array( $modules ) ) { 634 for ( $index = 0; $index < count( $modules ); $index++ ) { 635 $result = register_block_script_module_id( 636 $metadata, 637 $metadata_field_name, 638 $index 639 ); 640 if ( $result ) { 641 $processed_modules[] = $result; 642 } 643 } 644 } else { 645 $result = register_block_script_module_id( 646 $metadata, 647 $metadata_field_name 648 ); 649 if ( $result ) { 650 $processed_modules[] = $result; 651 } 652 } 653 $settings[ $settings_field_name ] = $processed_modules; 654 } 655 } 656 657 $style_fields = array( 658 'editorStyle' => 'editor_style_handles', 659 'style' => 'style_handles', 660 'viewStyle' => 'view_style_handles', 661 ); 662 foreach ( $style_fields as $metadata_field_name => $settings_field_name ) { 663 if ( ! empty( $settings[ $metadata_field_name ] ) ) { 664 $metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ]; 665 } 666 if ( ! empty( $metadata[ $metadata_field_name ] ) ) { 667 $styles = $metadata[ $metadata_field_name ]; 668 $processed_styles = array(); 669 if ( is_array( $styles ) ) { 670 for ( $index = 0; $index < count( $styles ); $index++ ) { 671 $result = register_block_style_handle( 672 $metadata, 673 $metadata_field_name, 674 $index 675 ); 676 if ( $result ) { 677 $processed_styles[] = $result; 678 } 679 } 680 } else { 681 $result = register_block_style_handle( 682 $metadata, 683 $metadata_field_name 684 ); 685 if ( $result ) { 686 $processed_styles[] = $result; 687 } 688 } 689 $settings[ $settings_field_name ] = $processed_styles; 690 } 691 } 692 693 if ( ! empty( $metadata['blockHooks'] ) ) { 694 /** 695 * Map camelCased position string (from block.json) to snake_cased block type position. 696 * 697 * @var array 698 */ 699 $position_mappings = array( 700 'before' => 'before', 701 'after' => 'after', 702 'firstChild' => 'first_child', 703 'lastChild' => 'last_child', 704 ); 705 706 $settings['block_hooks'] = array(); 707 foreach ( $metadata['blockHooks'] as $anchor_block_name => $position ) { 708 // Avoid infinite recursion (hooking to itself). 709 if ( $metadata['name'] === $anchor_block_name ) { 710 _doing_it_wrong( 711 __METHOD__, 712 __( 'Cannot hook block to itself.' ), 713 '6.4.0' 714 ); 715 continue; 716 } 717 718 if ( ! isset( $position_mappings[ $position ] ) ) { 719 continue; 720 } 721 722 $settings['block_hooks'][ $anchor_block_name ] = $position_mappings[ $position ]; 723 } 724 } 725 726 /** 727 * Filters the settings determined from the block type metadata. 728 * 729 * @since 5.7.0 730 * 731 * @param array $settings Array of determined settings for registering a block type. 732 * @param array $metadata Metadata provided for registering a block type. 733 */ 734 $settings = apply_filters( 'block_type_metadata_settings', $settings, $metadata ); 735 736 $metadata['name'] = ! empty( $settings['name'] ) ? $settings['name'] : $metadata['name']; 737 738 return WP_Block_Type_Registry::get_instance()->register( 739 $metadata['name'], 740 $settings 741 ); 742 } 743 744 /** 745 * Registers a block type. The recommended way is to register a block type using 746 * the metadata stored in the `block.json` file. 747 * 748 * @since 5.0.0 749 * @since 5.8.0 First parameter now accepts a path to the `block.json` file. 750 * 751 * @param string|WP_Block_Type $block_type Block type name including namespace, or alternatively 752 * a path to the JSON file with metadata definition for the block, 753 * or a path to the folder where the `block.json` file is located, 754 * or a complete WP_Block_Type instance. 755 * In case a WP_Block_Type is provided, the $args parameter will be ignored. 756 * @param array $args Optional. Array of block type arguments. Accepts any public property 757 * of `WP_Block_Type`. See WP_Block_Type::__construct() for information 758 * on accepted arguments. Default empty array. 759 * 760 * @return WP_Block_Type|false The registered block type on success, or false on failure. 761 */ 762 function register_block_type( $block_type, $args = array() ) { 763 if ( is_string( $block_type ) && file_exists( $block_type ) ) { 764 return register_block_type_from_metadata( $block_type, $args ); 765 } 766 767 return WP_Block_Type_Registry::get_instance()->register( $block_type, $args ); 768 } 769 770 /** 771 * Unregisters a block type. 772 * 773 * @since 5.0.0 774 * 775 * @param string|WP_Block_Type $name Block type name including namespace, or alternatively 776 * a complete WP_Block_Type instance. 777 * @return WP_Block_Type|false The unregistered block type on success, or false on failure. 778 */ 779 function unregister_block_type( $name ) { 780 return WP_Block_Type_Registry::get_instance()->unregister( $name ); 781 } 782 783 /** 784 * Determines whether a post or content string has blocks. 785 * 786 * This test optimizes for performance rather than strict accuracy, detecting 787 * the pattern of a block but not validating its structure. For strict accuracy, 788 * you should use the block parser on post content. 789 * 790 * @since 5.0.0 791 * 792 * @see parse_blocks() 793 * 794 * @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. 795 * Defaults to global $post. 796 * @return bool Whether the post has blocks. 797 */ 798 function has_blocks( $post = null ) { 799 if ( ! is_string( $post ) ) { 800 $wp_post = get_post( $post ); 801 802 if ( ! $wp_post instanceof WP_Post ) { 803 return false; 804 } 805 806 $post = $wp_post->post_content; 807 } 808 809 return str_contains( (string) $post, '<!-- wp:' ); 810 } 811 812 /** 813 * Determines whether a $post or a string contains a specific block type. 814 * 815 * This test optimizes for performance rather than strict accuracy, detecting 816 * whether the block type exists but not validating its structure and not checking 817 * synced patterns (formerly called reusable blocks). For strict accuracy, 818 * you should use the block parser on post content. 819 * 820 * @since 5.0.0 821 * 822 * @see parse_blocks() 823 * 824 * @param string $block_name Full block type to look for. 825 * @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. 826 * Defaults to global $post. 827 * @return bool Whether the post content contains the specified block. 828 */ 829 function has_block( $block_name, $post = null ) { 830 if ( ! has_blocks( $post ) ) { 831 return false; 832 } 833 834 if ( ! is_string( $post ) ) { 835 $wp_post = get_post( $post ); 836 if ( $wp_post instanceof WP_Post ) { 837 $post = $wp_post->post_content; 838 } 839 } 840 841 /* 842 * Normalize block name to include namespace, if provided as non-namespaced. 843 * This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by 844 * their serialized names. 845 */ 846 if ( ! str_contains( $block_name, '/' ) ) { 847 $block_name = 'core/' . $block_name; 848 } 849 850 // Test for existence of block by its fully qualified name. 851 $has_block = str_contains( $post, '<!-- wp:' . $block_name . ' ' ); 852 853 if ( ! $has_block ) { 854 /* 855 * If the given block name would serialize to a different name, test for 856 * existence by the serialized form. 857 */ 858 $serialized_block_name = strip_core_block_namespace( $block_name ); 859 if ( $serialized_block_name !== $block_name ) { 860 $has_block = str_contains( $post, '<!-- wp:' . $serialized_block_name . ' ' ); 861 } 862 } 863 864 return $has_block; 865 } 866 867 /** 868 * Returns an array of the names of all registered dynamic block types. 869 * 870 * @since 5.0.0 871 * 872 * @return string[] Array of dynamic block names. 873 */ 874 function get_dynamic_block_names() { 875 $dynamic_block_names = array(); 876 877 $block_types = WP_Block_Type_Registry::get_instance()->get_all_registered(); 878 foreach ( $block_types as $block_type ) { 879 if ( $block_type->is_dynamic() ) { 880 $dynamic_block_names[] = $block_type->name; 881 } 882 } 883 884 return $dynamic_block_names; 885 } 886 887 /** 888 * Retrieves block types hooked into the given block, grouped by anchor block type and the relative position. 889 * 890 * @since 6.4.0 891 * 892 * @return array[] Array of block types grouped by anchor block type and the relative position. 893 */ 894 function get_hooked_blocks() { 895 $block_types = WP_Block_Type_Registry::get_instance()->get_all_registered(); 896 $hooked_blocks = array(); 897 foreach ( $block_types as $block_type ) { 898 if ( ! ( $block_type instanceof WP_Block_Type ) || ! is_array( $block_type->block_hooks ) ) { 899 continue; 900 } 901 foreach ( $block_type->block_hooks as $anchor_block_type => $relative_position ) { 902 if ( ! isset( $hooked_blocks[ $anchor_block_type ] ) ) { 903 $hooked_blocks[ $anchor_block_type ] = array(); 904 } 905 if ( ! isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) ) { 906 $hooked_blocks[ $anchor_block_type ][ $relative_position ] = array(); 907 } 908 $hooked_blocks[ $anchor_block_type ][ $relative_position ][] = $block_type->name; 909 } 910 } 911 912 return $hooked_blocks; 913 } 914 915 /** 916 * Returns the markup for blocks hooked to the given anchor block in a specific relative position. 917 * 918 * @since 6.5.0 919 * @access private 920 * 921 * @param array $parsed_anchor_block The anchor block, in parsed block array format. 922 * @param string $relative_position The relative position of the hooked blocks. 923 * Can be one of 'before', 'after', 'first_child', or 'last_child'. 924 * @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position. 925 * @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to. 926 * @return string 927 */ 928 function insert_hooked_blocks( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) { 929 $anchor_block_type = $parsed_anchor_block['blockName']; 930 $hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) 931 ? $hooked_blocks[ $anchor_block_type ][ $relative_position ] 932 : array(); 933 934 /** 935 * Filters the list of hooked block types for a given anchor block type and relative position. 936 * 937 * @since 6.4.0 938 * 939 * @param string[] $hooked_block_types The list of hooked block types. 940 * @param string $relative_position The relative position of the hooked blocks. 941 * Can be one of 'before', 'after', 'first_child', or 'last_child'. 942 * @param string $anchor_block_type The anchor block type. 943 * @param WP_Block_Template|WP_Post|array $context The block template, template part, post object, 944 * or pattern that the anchor block belongs to. 945 */ 946 $hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context ); 947 948 $markup = ''; 949 foreach ( $hooked_block_types as $hooked_block_type ) { 950 $parsed_hooked_block = array( 951 'blockName' => $hooked_block_type, 952 'attrs' => array(), 953 'innerBlocks' => array(), 954 'innerContent' => array(), 955 ); 956 957 /** 958 * Filters the parsed block array for a given hooked block. 959 * 960 * @since 6.5.0 961 * 962 * @param array|null $parsed_hooked_block The parsed block array for the given hooked block type, or null to suppress the block. 963 * @param string $hooked_block_type The hooked block type name. 964 * @param string $relative_position The relative position of the hooked block. 965 * @param array $parsed_anchor_block The anchor block, in parsed block array format. 966 * @param WP_Block_Template|WP_Post|array $context The block template, template part, post object, 967 * or pattern that the anchor block belongs to. 968 */ 969 $parsed_hooked_block = apply_filters( 'hooked_block', $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context ); 970 971 /** 972 * Filters the parsed block array for a given hooked block. 973 * 974 * The dynamic portion of the hook name, `$hooked_block_type`, refers to the block type name of the specific hooked block. 975 * 976 * @since 6.5.0 977 * 978 * @param array|null $parsed_hooked_block The parsed block array for the given hooked block type, or null to suppress the block. 979 * @param string $hooked_block_type The hooked block type name. 980 * @param string $relative_position The relative position of the hooked block. 981 * @param array $parsed_anchor_block The anchor block, in parsed block array format. 982 * @param WP_Block_Template|WP_Post|array $context The block template, template part, post object, 983 * or pattern that the anchor block belongs to. 984 */ 985 $parsed_hooked_block = apply_filters( "hooked_block_{$hooked_block_type}", $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context ); 986 987 if ( null === $parsed_hooked_block ) { 988 continue; 989 } 990 991 // It's possible that the filter returned a block of a different type, so we explicitly 992 // look for the original `$hooked_block_type` in the `ignoredHookedBlocks` metadata. 993 if ( 994 ! isset( $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] ) || 995 ! in_array( $hooked_block_type, $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'], true ) 996 ) { 997 $markup .= serialize_block( $parsed_hooked_block ); 998 } 999 } 1000 1001 return $markup; 1002 } 1003 1004 /** 1005 * Adds a list of hooked block types to an anchor block's ignored hooked block types. 1006 * 1007 * This function is meant for internal use only. 1008 * 1009 * @since 6.5.0 1010 * @access private 1011 * 1012 * @param array $parsed_anchor_block The anchor block, in parsed block array format. 1013 * @param string $relative_position The relative position of the hooked blocks. 1014 * Can be one of 'before', 'after', 'first_child', or 'last_child'. 1015 * @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position. 1016 * @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to. 1017 * @return string Empty string. 1018 */ 1019 function set_ignored_hooked_blocks_metadata( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) { 1020 $anchor_block_type = $parsed_anchor_block['blockName']; 1021 $hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) 1022 ? $hooked_blocks[ $anchor_block_type ][ $relative_position ] 1023 : array(); 1024 1025 /** This filter is documented in wp-includes/blocks.php */ 1026 $hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context ); 1027 if ( empty( $hooked_block_types ) ) { 1028 return ''; 1029 } 1030 1031 foreach ( $hooked_block_types as $index => $hooked_block_type ) { 1032 $parsed_hooked_block = array( 1033 'blockName' => $hooked_block_type, 1034 'attrs' => array(), 1035 'innerBlocks' => array(), 1036 'innerContent' => array(), 1037 ); 1038 1039 /** This filter is documented in wp-includes/blocks.php */ 1040 $parsed_hooked_block = apply_filters( 'hooked_block', $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context ); 1041 1042 /** This filter is documented in wp-includes/blocks.php */ 1043 $parsed_hooked_block = apply_filters( "hooked_block_{$hooked_block_type}", $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context ); 1044 1045 if ( null === $parsed_hooked_block ) { 1046 unset( $hooked_block_types[ $index ] ); 1047 } 1048 } 1049 1050 $previously_ignored_hooked_blocks = isset( $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] ) 1051 ? $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] 1052 : array(); 1053 1054 $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] = array_unique( 1055 array_merge( 1056 $previously_ignored_hooked_blocks, 1057 $hooked_block_types 1058 ) 1059 ); 1060 1061 // Markup for the hooked blocks has already been created (in `insert_hooked_blocks`). 1062 return ''; 1063 } 1064 1065 /** 1066 * Runs the hooked blocks algorithm on the given content. 1067 * 1068 * @since 6.6.0 1069 * @since 6.7.0 Injects the `theme` attribute into Template Part blocks, even if no hooked blocks are registered. 1070 * @since 6.8.0 Have the `$context` parameter default to `null`, in which case `get_post()` will be called to use the current post as context. 1071 * @access private 1072 * 1073 * @param string $content Serialized content. 1074 * @param WP_Block_Template|WP_Post|array|null $context A block template, template part, post object, or pattern 1075 * that the blocks belong to. If set to `null`, `get_post()` 1076 * will be called to use the current post as context. 1077 * Default: `null`. 1078 * @param callable $callback A function that will be called for each block to generate 1079 * the markup for a given list of blocks that are hooked to it. 1080 * Default: 'insert_hooked_blocks'. 1081 * @return string The serialized markup. 1082 */ 1083 function apply_block_hooks_to_content( $content, $context = null, $callback = 'insert_hooked_blocks' ) { 1084 // Default to the current post if no context is provided. 1085 if ( null === $context ) { 1086 $context = get_post(); 1087 } 1088 1089 $hooked_blocks = get_hooked_blocks(); 1090 1091 $before_block_visitor = '_inject_theme_attribute_in_template_part_block'; 1092 $after_block_visitor = null; 1093 if ( ! empty( $hooked_blocks ) || has_filter( 'hooked_block_types' ) ) { 1094 $before_block_visitor = make_before_block_visitor( $hooked_blocks, $context, $callback ); 1095 $after_block_visitor = make_after_block_visitor( $hooked_blocks, $context, $callback ); 1096 } 1097 1098 $block_allows_multiple_instances = array(); 1099 /* 1100 * Remove hooked blocks from `$hooked_block_types` if they have `multiple` set to false and 1101 * are already present in `$content`. 1102 */ 1103 foreach ( $hooked_blocks as $anchor_block_type => $relative_positions ) { 1104 foreach ( $relative_positions as $relative_position => $hooked_block_types ) { 1105 foreach ( $hooked_block_types as $index => $hooked_block_type ) { 1106 $hooked_block_type_definition = 1107 WP_Block_Type_Registry::get_instance()->get_registered( $hooked_block_type ); 1108 1109 $block_allows_multiple_instances[ $hooked_block_type ] = 1110 block_has_support( $hooked_block_type_definition, 'multiple', true ); 1111 1112 if ( 1113 ! $block_allows_multiple_instances[ $hooked_block_type ] && 1114 has_block( $hooked_block_type, $content ) 1115 ) { 1116 unset( $hooked_blocks[ $anchor_block_type ][ $relative_position ][ $index ] ); 1117 } 1118 } 1119 if ( empty( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) ) { 1120 unset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ); 1121 } 1122 } 1123 if ( empty( $hooked_blocks[ $anchor_block_type ] ) ) { 1124 unset( $hooked_blocks[ $anchor_block_type ] ); 1125 } 1126 } 1127 1128 /* 1129 * We also need to cover the case where the hooked block is not present in 1130 * `$content` at first and we're allowed to insert it once -- but not again. 1131 */ 1132 $suppress_single_instance_blocks = static function ( $hooked_block_types ) use ( &$block_allows_multiple_instances, $content ) { 1133 static $single_instance_blocks_present_in_content = array(); 1134 foreach ( $hooked_block_types as $index => $hooked_block_type ) { 1135 if ( ! isset( $block_allows_multiple_instances[ $hooked_block_type ] ) ) { 1136 $hooked_block_type_definition = 1137 WP_Block_Type_Registry::get_instance()->get_registered( $hooked_block_type ); 1138 1139 $block_allows_multiple_instances[ $hooked_block_type ] = 1140 block_has_support( $hooked_block_type_definition, 'multiple', true ); 1141 } 1142 1143 if ( $block_allows_multiple_instances[ $hooked_block_type ] ) { 1144 continue; 1145 } 1146 1147 // The block doesn't allow multiple instances, so we need to check if it's already present. 1148 if ( 1149 in_array( $hooked_block_type, $single_instance_blocks_present_in_content, true ) || 1150 has_block( $hooked_block_type, $content ) 1151 ) { 1152 unset( $hooked_block_types[ $index ] ); 1153 } else { 1154 // We can insert the block once, but need to remember not to insert it again. 1155 $single_instance_blocks_present_in_content[] = $hooked_block_type; 1156 } 1157 } 1158 return $hooked_block_types; 1159 }; 1160 add_filter( 'hooked_block_types', $suppress_single_instance_blocks, PHP_INT_MAX ); 1161 $content = traverse_and_serialize_blocks( 1162 parse_blocks( $content ), 1163 $before_block_visitor, 1164 $after_block_visitor 1165 ); 1166 remove_filter( 'hooked_block_types', $suppress_single_instance_blocks, PHP_INT_MAX ); 1167 1168 return $content; 1169 } 1170 1171 /** 1172 * Run the Block Hooks algorithm on a post object's content. 1173 * 1174 * This function is different from `apply_block_hooks_to_content` in that 1175 * it takes ignored hooked block information from the post's metadata into 1176 * account. This ensures that any blocks hooked as first or last child 1177 * of the block that corresponds to the post type are handled correctly. 1178 * 1179 * @since 6.8.0 1180 * @access private 1181 * 1182 * @param string $content Serialized content. 1183 * @param WP_Post|null $post A post object that the content belongs to. If set to `null`, 1184 * `get_post()` will be called to use the current post as context. 1185 * Default: `null`. 1186 * @param callable $callback A function that will be called for each block to generate 1187 * the markup for a given list of blocks that are hooked to it. 1188 * Default: 'insert_hooked_blocks'. 1189 * @return string The serialized markup. 1190 */ 1191 function apply_block_hooks_to_content_from_post_object( $content, $post = null, $callback = 'insert_hooked_blocks' ) { 1192 // Default to the current post if no context is provided. 1193 if ( null === $post ) { 1194 $post = get_post(); 1195 } 1196 1197 if ( ! $post instanceof WP_Post ) { 1198 return apply_block_hooks_to_content( $content, $post, $callback ); 1199 } 1200 1201 /* 1202 * If the content was created using the classic editor or using a single Classic block 1203 * (`core/freeform`), it might not contain any block markup at all. 1204 * However, we still might need to inject hooked blocks in the first child or last child 1205 * positions of the parent block. To be able to apply the Block Hooks algorithm, we wrap 1206 * the content in a `core/freeform` wrapper block. 1207 */ 1208 if ( ! has_blocks( $content ) ) { 1209 $original_content = $content; 1210 1211 $content_wrapped_in_classic_block = get_comment_delimited_block_content( 1212 'core/freeform', 1213 array(), 1214 $content 1215 ); 1216 1217 $content = $content_wrapped_in_classic_block; 1218 } 1219 1220 $attributes = array(); 1221 1222 // If context is a post object, `ignoredHookedBlocks` information is stored in its post meta. 1223 $ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true ); 1224 if ( ! empty( $ignored_hooked_blocks ) ) { 1225 $ignored_hooked_blocks = json_decode( $ignored_hooked_blocks, true ); 1226 $attributes['metadata'] = array( 1227 'ignoredHookedBlocks' => $ignored_hooked_blocks, 1228 ); 1229 } 1230 1231 /* 1232 * We need to wrap the content in a temporary wrapper block with that metadata 1233 * so the Block Hooks algorithm can insert blocks that are hooked as first or last child 1234 * of the wrapper block. 1235 * To that end, we need to determine the wrapper block type based on the post type. 1236 */ 1237 if ( 'wp_navigation' === $post->post_type ) { 1238 $wrapper_block_type = 'core/navigation'; 1239 } elseif ( 'wp_block' === $post->post_type ) { 1240 $wrapper_block_type = 'core/block'; 1241 } else { 1242 $wrapper_block_type = 'core/post-content'; 1243 } 1244 1245 $content = get_comment_delimited_block_content( 1246 $wrapper_block_type, 1247 $attributes, 1248 $content 1249 ); 1250 1251 /* 1252 * We need to avoid inserting any blocks hooked into the `before` and `after` positions 1253 * of the temporary wrapper block that we create to wrap the content. 1254 * See https://core.trac.wordpress.org/ticket/63287 for more details. 1255 */ 1256 $suppress_blocks_from_insertion_before_and_after_wrapper_block = static function ( $hooked_block_types, $relative_position, $anchor_block_type ) use ( $wrapper_block_type ) { 1257 if ( 1258 $wrapper_block_type === $anchor_block_type && 1259 in_array( $relative_position, array( 'before', 'after' ), true ) 1260 ) { 1261 return array(); 1262 } 1263 return $hooked_block_types; 1264 }; 1265 1266 // Apply Block Hooks. 1267 add_filter( 'hooked_block_types', $suppress_blocks_from_insertion_before_and_after_wrapper_block, PHP_INT_MAX, 3 ); 1268 $content = apply_block_hooks_to_content( $content, $post, $callback ); 1269 remove_filter( 'hooked_block_types', $suppress_blocks_from_insertion_before_and_after_wrapper_block, PHP_INT_MAX ); 1270 1271 // Finally, we need to remove the temporary wrapper block. 1272 $content = remove_serialized_parent_block( $content ); 1273 1274 // If we wrapped the content in a `core/freeform` block, we also need to remove that. 1275 if ( ! empty( $content_wrapped_in_classic_block ) ) { 1276 /* 1277 * We cannot simply use remove_serialized_parent_block() here, 1278 * as that function assumes that the block wrapper is at the top level. 1279 * However, there might now be a hooked block inserted next to it 1280 * (as first or last child of the parent). 1281 */ 1282 $content = str_replace( $content_wrapped_in_classic_block, $original_content, $content ); 1283 } 1284 1285 return $content; 1286 } 1287 1288 /** 1289 * Accepts the serialized markup of a block and its inner blocks, and returns serialized markup of the inner blocks. 1290 * 1291 * @since 6.6.0 1292 * @access private 1293 * 1294 * @param string $serialized_block The serialized markup of a block and its inner blocks. 1295 * @return string The serialized markup of the inner blocks. 1296 */ 1297 function remove_serialized_parent_block( $serialized_block ) { 1298 $start = strpos( $serialized_block, '-->' ) + strlen( '-->' ); 1299 $end = strrpos( $serialized_block, '<!--' ); 1300 return substr( $serialized_block, $start, $end - $start ); 1301 } 1302 1303 /** 1304 * Accepts the serialized markup of a block and its inner blocks, and returns serialized markup of the wrapper block. 1305 * 1306 * @since 6.7.0 1307 * @access private 1308 * 1309 * @see remove_serialized_parent_block() 1310 * 1311 * @param string $serialized_block The serialized markup of a block and its inner blocks. 1312 * @return string The serialized markup of the wrapper block. 1313 */ 1314 function extract_serialized_parent_block( $serialized_block ) { 1315 $start = strpos( $serialized_block, '-->' ) + strlen( '-->' ); 1316 $end = strrpos( $serialized_block, '<!--' ); 1317 return substr( $serialized_block, 0, $start ) . substr( $serialized_block, $end ); 1318 } 1319 1320 /** 1321 * Updates the wp_postmeta with the list of ignored hooked blocks 1322 * where the inner blocks are stored as post content. 1323 * 1324 * @since 6.6.0 1325 * @since 6.8.0 Support non-`wp_navigation` post types. 1326 * @access private 1327 * 1328 * @param stdClass $post Post object. 1329 * @return stdClass The updated post object. 1330 */ 1331 function update_ignored_hooked_blocks_postmeta( $post ) { 1332 /* 1333 * In this scenario the user has likely tried to create a new post object via the REST API. 1334 * In which case we won't have a post ID to work with and store meta against. 1335 */ 1336 if ( empty( $post->ID ) ) { 1337 return $post; 1338 } 1339 1340 /* 1341 * Skip meta generation when consumers intentionally update specific fields 1342 * and omit the content update. 1343 */ 1344 if ( ! isset( $post->post_content ) ) { 1345 return $post; 1346 } 1347 1348 /* 1349 * Skip meta generation if post type is not set. 1350 */ 1351 if ( ! isset( $post->post_type ) ) { 1352 return $post; 1353 } 1354 1355 $attributes = array(); 1356 1357 $ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true ); 1358 if ( ! empty( $ignored_hooked_blocks ) ) { 1359 $ignored_hooked_blocks = json_decode( $ignored_hooked_blocks, true ); 1360 $attributes['metadata'] = array( 1361 'ignoredHookedBlocks' => $ignored_hooked_blocks, 1362 ); 1363 } 1364 1365 if ( 'wp_navigation' === $post->post_type ) { 1366 $wrapper_block_type = 'core/navigation'; 1367 } elseif ( 'wp_block' === $post->post_type ) { 1368 $wrapper_block_type = 'core/block'; 1369 } else { 1370 $wrapper_block_type = 'core/post-content'; 1371 } 1372 1373 $markup = get_comment_delimited_block_content( 1374 $wrapper_block_type, 1375 $attributes, 1376 $post->post_content 1377 ); 1378 1379 $existing_post = get_post( $post->ID ); 1380 // Merge the existing post object with the updated post object to pass to the block hooks algorithm for context. 1381 $context = (object) array_merge( (array) $existing_post, (array) $post ); 1382 $context = new WP_Post( $context ); // Convert to WP_Post object. 1383 $serialized_block = apply_block_hooks_to_content( $markup, $context, 'set_ignored_hooked_blocks_metadata' ); 1384 $root_block = parse_blocks( $serialized_block )[0]; 1385 1386 $ignored_hooked_blocks = isset( $root_block['attrs']['metadata']['ignoredHookedBlocks'] ) 1387 ? $root_block['attrs']['metadata']['ignoredHookedBlocks'] 1388 : array(); 1389 1390 if ( ! empty( $ignored_hooked_blocks ) ) { 1391 $existing_ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true ); 1392 if ( ! empty( $existing_ignored_hooked_blocks ) ) { 1393 $existing_ignored_hooked_blocks = json_decode( $existing_ignored_hooked_blocks, true ); 1394 $ignored_hooked_blocks = array_unique( array_merge( $ignored_hooked_blocks, $existing_ignored_hooked_blocks ) ); 1395 } 1396 1397 if ( ! isset( $post->meta_input ) ) { 1398 $post->meta_input = array(); 1399 } 1400 $post->meta_input['_wp_ignored_hooked_blocks'] = json_encode( $ignored_hooked_blocks ); 1401 } 1402 1403 $post->post_content = remove_serialized_parent_block( $serialized_block ); 1404 return $post; 1405 } 1406 1407 /** 1408 * Returns the markup for blocks hooked to the given anchor block in a specific relative position and then 1409 * adds a list of hooked block types to an anchor block's ignored hooked block types. 1410 * 1411 * This function is meant for internal use only. 1412 * 1413 * @since 6.6.0 1414 * @access private 1415 * 1416 * @param array $parsed_anchor_block The anchor block, in parsed block array format. 1417 * @param string $relative_position The relative position of the hooked blocks. 1418 * Can be one of 'before', 'after', 'first_child', or 'last_child'. 1419 * @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position. 1420 * @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to. 1421 * @return string 1422 */ 1423 function insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) { 1424 $markup = insert_hooked_blocks( $parsed_anchor_block, $relative_position, $hooked_blocks, $context ); 1425 $markup .= set_ignored_hooked_blocks_metadata( $parsed_anchor_block, $relative_position, $hooked_blocks, $context ); 1426 1427 return $markup; 1428 } 1429 1430 /** 1431 * Hooks into the REST API response for the Posts endpoint and adds the first and last inner blocks. 1432 * 1433 * @since 6.6.0 1434 * @since 6.8.0 Support non-`wp_navigation` post types. 1435 * 1436 * @param WP_REST_Response $response The response object. 1437 * @param WP_Post $post Post object. 1438 * @return WP_REST_Response The response object. 1439 */ 1440 function insert_hooked_blocks_into_rest_response( $response, $post ) { 1441 if ( empty( $response->data['content']['raw'] ) ) { 1442 return $response; 1443 } 1444 1445 $response->data['content']['raw'] = apply_block_hooks_to_content_from_post_object( 1446 $response->data['content']['raw'], 1447 $post, 1448 'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata' 1449 ); 1450 1451 // If the rendered content was previously empty, we leave it like that. 1452 if ( empty( $response->data['content']['rendered'] ) ) { 1453 return $response; 1454 } 1455 1456 // `apply_block_hooks_to_content` is called above. Ensure it is not called again as a filter. 1457 $priority = has_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object' ); 1458 if ( false !== $priority ) { 1459 remove_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object', $priority ); 1460 } 1461 1462 /** This filter is documented in wp-includes/post-template.php */ 1463 $response->data['content']['rendered'] = apply_filters( 1464 'the_content', 1465 $response->data['content']['raw'] 1466 ); 1467 1468 // Restore the filter if it was set initially. 1469 if ( false !== $priority ) { 1470 add_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object', $priority ); 1471 } 1472 1473 return $response; 1474 } 1475 1476 /** 1477 * Returns a function that injects the theme attribute into, and hooked blocks before, a given block. 1478 * 1479 * The returned function can be used as `$pre_callback` argument to `traverse_and_serialize_block(s)`, 1480 * where it will inject the `theme` attribute into all Template Part blocks, and prepend the markup for 1481 * any blocks hooked `before` the given block and as its parent's `first_child`, respectively. 1482 * 1483 * This function is meant for internal use only. 1484 * 1485 * @since 6.4.0 1486 * @since 6.5.0 Added $callback argument. 1487 * @access private 1488 * 1489 * @param array $hooked_blocks An array of blocks hooked to another given block. 1490 * @param WP_Block_Template|WP_Post|array $context A block template, template part, post object, 1491 * or pattern that the blocks belong to. 1492 * @param callable $callback A function that will be called for each block to generate 1493 * the markup for a given list of blocks that are hooked to it. 1494 * Default: 'insert_hooked_blocks'. 1495 * @return callable A function that returns the serialized markup for the given block, 1496 * including the markup for any hooked blocks before it. 1497 */ 1498 function make_before_block_visitor( $hooked_blocks, $context, $callback = 'insert_hooked_blocks' ) { 1499 /** 1500 * Injects hooked blocks before the given block, injects the `theme` attribute into Template Part blocks, and returns the serialized markup. 1501 * 1502 * If the current block is a Template Part block, inject the `theme` attribute. 1503 * Furthermore, prepend the markup for any blocks hooked `before` the given block and as its parent's 1504 * `first_child`, respectively, to the serialized markup for the given block. 1505 * 1506 * @param array $block The block to inject the theme attribute into, and hooked blocks before. Passed by reference. 1507 * @param array $parent_block The parent block of the given block. Passed by reference. Default null. 1508 * @param array $prev The previous sibling block of the given block. Default null. 1509 * @return string The serialized markup for the given block, with the markup for any hooked blocks prepended to it. 1510 */ 1511 return function ( &$block, &$parent_block = null, $prev = null ) use ( $hooked_blocks, $context, $callback ) { 1512 _inject_theme_attribute_in_template_part_block( $block ); 1513 1514 $markup = ''; 1515 1516 if ( $parent_block && ! $prev ) { 1517 // Candidate for first-child insertion. 1518 $markup .= call_user_func_array( 1519 $callback, 1520 array( &$parent_block, 'first_child', $hooked_blocks, $context ) 1521 ); 1522 } 1523 1524 $markup .= call_user_func_array( 1525 $callback, 1526 array( &$block, 'before', $hooked_blocks, $context ) 1527 ); 1528 1529 return $markup; 1530 }; 1531 } 1532 1533 /** 1534 * Returns a function that injects the hooked blocks after a given block. 1535 * 1536 * The returned function can be used as `$post_callback` argument to `traverse_and_serialize_block(s)`, 1537 * where it will append the markup for any blocks hooked `after` the given block and as its parent's 1538 * `last_child`, respectively. 1539 * 1540 * This function is meant for internal use only. 1541 * 1542 * @since 6.4.0 1543 * @since 6.5.0 Added $callback argument. 1544 * @access private 1545 * 1546 * @param array $hooked_blocks An array of blocks hooked to another block. 1547 * @param WP_Block_Template|WP_Post|array $context A block template, template part, post object, 1548 * or pattern that the blocks belong to. 1549 * @param callable $callback A function that will be called for each block to generate 1550 * the markup for a given list of blocks that are hooked to it. 1551 * Default: 'insert_hooked_blocks'. 1552 * @return callable A function that returns the serialized markup for the given block, 1553 * including the markup for any hooked blocks after it. 1554 */ 1555 function make_after_block_visitor( $hooked_blocks, $context, $callback = 'insert_hooked_blocks' ) { 1556 /** 1557 * Injects hooked blocks after the given block, and returns the serialized markup. 1558 * 1559 * Append the markup for any blocks hooked `after` the given block and as its parent's 1560 * `last_child`, respectively, to the serialized markup for the given block. 1561 * 1562 * @param array $block The block to inject the hooked blocks after. Passed by reference. 1563 * @param array $parent_block The parent block of the given block. Passed by reference. Default null. 1564 * @param array $next The next sibling block of the given block. Default null. 1565 * @return string The serialized markup for the given block, with the markup for any hooked blocks appended to it. 1566 */ 1567 return function ( &$block, &$parent_block = null, $next = null ) use ( $hooked_blocks, $context, $callback ) { 1568 $markup = call_user_func_array( 1569 $callback, 1570 array( &$block, 'after', $hooked_blocks, $context ) 1571 ); 1572 1573 if ( $parent_block && ! $next ) { 1574 // Candidate for last-child insertion. 1575 $markup .= call_user_func_array( 1576 $callback, 1577 array( &$parent_block, 'last_child', $hooked_blocks, $context ) 1578 ); 1579 } 1580 1581 return $markup; 1582 }; 1583 } 1584 1585 /** 1586 * Given an array of attributes, returns a string in the serialized attributes 1587 * format prepared for post content. 1588 * 1589 * The serialized result is a JSON-encoded string, with unicode escape sequence 1590 * substitution for characters which might otherwise interfere with embedding 1591 * the result in an HTML comment. 1592 * 1593 * This function must produce output that remains in sync with the output of 1594 * the serializeAttributes JavaScript function in the block editor in order 1595 * to ensure consistent operation between PHP and JavaScript. 1596 * 1597 * @since 5.3.1 1598 * 1599 * @param array $block_attributes Attributes object. 1600 * @return string Serialized attributes. 1601 */ 1602 function serialize_block_attributes( $block_attributes ) { 1603 $encoded_attributes = wp_json_encode( $block_attributes, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE ); 1604 $encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes ); 1605 $encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes ); 1606 $encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes ); 1607 $encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes ); 1608 // Regex: /\\"/ 1609 $encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes ); 1610 1611 return $encoded_attributes; 1612 } 1613 1614 /** 1615 * Returns the block name to use for serialization. This will remove the default 1616 * "core/" namespace from a block name. 1617 * 1618 * @since 5.3.1 1619 * 1620 * @param string|null $block_name Optional. Original block name. Null if the block name is unknown, 1621 * e.g. Classic blocks have their name set to null. Default null. 1622 * @return string Block name to use for serialization. 1623 */ 1624 function strip_core_block_namespace( $block_name = null ) { 1625 if ( is_string( $block_name ) && str_starts_with( $block_name, 'core/' ) ) { 1626 return substr( $block_name, 5 ); 1627 } 1628 1629 return $block_name; 1630 } 1631 1632 /** 1633 * Returns the content of a block, including comment delimiters. 1634 * 1635 * @since 5.3.1 1636 * 1637 * @param string|null $block_name Block name. Null if the block name is unknown, 1638 * e.g. Classic blocks have their name set to null. 1639 * @param array $block_attributes Block attributes. 1640 * @param string $block_content Block save content. 1641 * @return string Comment-delimited block content. 1642 */ 1643 function get_comment_delimited_block_content( $block_name, $block_attributes, $block_content ) { 1644 if ( is_null( $block_name ) ) { 1645 return $block_content; 1646 } 1647 1648 $serialized_block_name = strip_core_block_namespace( $block_name ); 1649 $serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' '; 1650 1651 if ( empty( $block_content ) ) { 1652 return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes ); 1653 } 1654 1655 return sprintf( 1656 '<!-- wp:%s %s-->%s<!-- /wp:%s -->', 1657 $serialized_block_name, 1658 $serialized_attributes, 1659 $block_content, 1660 $serialized_block_name 1661 ); 1662 } 1663 1664 /** 1665 * Returns the content of a block, including comment delimiters, serializing all 1666 * attributes from the given parsed block. 1667 * 1668 * This should be used when preparing a block to be saved to post content. 1669 * Prefer `render_block` when preparing a block for display. Unlike 1670 * `render_block`, this does not evaluate a block's `render_callback`, and will 1671 * instead preserve the markup as parsed. 1672 * 1673 * @since 5.3.1 1674 * 1675 * @param array $block { 1676 * An associative array of a single parsed block object. See WP_Block_Parser_Block. 1677 * 1678 * @type string $blockName Name of block. 1679 * @type array $attrs Attributes from block comment delimiters. 1680 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 1681 * have the same structure as this one. 1682 * @type string $innerHTML HTML from inside block comment delimiters. 1683 * @type array $innerContent List of string fragments and null markers where 1684 * inner blocks were found. 1685 * } 1686 * @return string String of rendered HTML. 1687 */ 1688 function serialize_block( $block ) { 1689 $block_content = ''; 1690 1691 $index = 0; 1692 foreach ( $block['innerContent'] as $chunk ) { 1693 $block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] ); 1694 } 1695 1696 if ( ! is_array( $block['attrs'] ) ) { 1697 $block['attrs'] = array(); 1698 } 1699 1700 return get_comment_delimited_block_content( 1701 $block['blockName'], 1702 $block['attrs'], 1703 $block_content 1704 ); 1705 } 1706 1707 /** 1708 * Returns a joined string of the aggregate serialization of the given 1709 * parsed blocks. 1710 * 1711 * @since 5.3.1 1712 * 1713 * @param array[] $blocks { 1714 * Array of block structures. 1715 * 1716 * @type array ...$0 { 1717 * An associative array of a single parsed block object. See WP_Block_Parser_Block. 1718 * 1719 * @type string $blockName Name of block. 1720 * @type array $attrs Attributes from block comment delimiters. 1721 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 1722 * have the same structure as this one. 1723 * @type string $innerHTML HTML from inside block comment delimiters. 1724 * @type array $innerContent List of string fragments and null markers where 1725 * inner blocks were found. 1726 * } 1727 * } 1728 * @return string String of rendered HTML. 1729 */ 1730 function serialize_blocks( $blocks ) { 1731 return implode( '', array_map( 'serialize_block', $blocks ) ); 1732 } 1733 1734 /** 1735 * Traverses a parsed block tree and applies callbacks before and after serializing it. 1736 * 1737 * Recursively traverses the block and its inner blocks and applies the two callbacks provided as 1738 * arguments, the first one before serializing the block, and the second one after serializing it. 1739 * If either callback returns a string value, it will be prepended and appended to the serialized 1740 * block markup, respectively. 1741 * 1742 * The callbacks will receive a reference to the current block as their first argument, so that they 1743 * can also modify it, and the current block's parent block as second argument. Finally, the 1744 * `$pre_callback` receives the previous block, whereas the `$post_callback` receives 1745 * the next block as third argument. 1746 * 1747 * Serialized blocks are returned including comment delimiters, and with all attributes serialized. 1748 * 1749 * This function should be used when there is a need to modify the saved block, or to inject markup 1750 * into the return value. Prefer `serialize_block` when preparing a block to be saved to post content. 1751 * 1752 * This function is meant for internal use only. 1753 * 1754 * @since 6.4.0 1755 * @access private 1756 * 1757 * @see serialize_block() 1758 * 1759 * @param array $block An associative array of a single parsed block object. See WP_Block_Parser_Block. 1760 * @param callable $pre_callback Callback to run on each block in the tree before it is traversed and serialized. 1761 * It is called with the following arguments: &$block, $parent_block, $previous_block. 1762 * Its string return value will be prepended to the serialized block markup. 1763 * @param callable $post_callback Callback to run on each block in the tree after it is traversed and serialized. 1764 * It is called with the following arguments: &$block, $parent_block, $next_block. 1765 * Its string return value will be appended to the serialized block markup. 1766 * @return string Serialized block markup. 1767 */ 1768 function traverse_and_serialize_block( $block, $pre_callback = null, $post_callback = null ) { 1769 $block_content = ''; 1770 $block_index = 0; 1771 1772 foreach ( $block['innerContent'] as $chunk ) { 1773 if ( is_string( $chunk ) ) { 1774 $block_content .= $chunk; 1775 } else { 1776 $inner_block = $block['innerBlocks'][ $block_index ]; 1777 1778 if ( is_callable( $pre_callback ) ) { 1779 $prev = 0 === $block_index 1780 ? null 1781 : $block['innerBlocks'][ $block_index - 1 ]; 1782 1783 $block_content .= call_user_func_array( 1784 $pre_callback, 1785 array( &$inner_block, &$block, $prev ) 1786 ); 1787 } 1788 1789 if ( is_callable( $post_callback ) ) { 1790 $next = count( $block['innerBlocks'] ) - 1 === $block_index 1791 ? null 1792 : $block['innerBlocks'][ $block_index + 1 ]; 1793 1794 $post_markup = call_user_func_array( 1795 $post_callback, 1796 array( &$inner_block, &$block, $next ) 1797 ); 1798 } 1799 1800 $block_content .= traverse_and_serialize_block( $inner_block, $pre_callback, $post_callback ); 1801 $block_content .= isset( $post_markup ) ? $post_markup : ''; 1802 1803 ++$block_index; 1804 } 1805 } 1806 1807 if ( ! is_array( $block['attrs'] ) ) { 1808 $block['attrs'] = array(); 1809 } 1810 1811 return get_comment_delimited_block_content( 1812 $block['blockName'], 1813 $block['attrs'], 1814 $block_content 1815 ); 1816 } 1817 1818 /** 1819 * Replaces patterns in a block tree with their content. 1820 * 1821 * @since 6.6.0 1822 * 1823 * @param array $blocks An array blocks. 1824 * 1825 * @return array An array of blocks with patterns replaced by their content. 1826 */ 1827 function resolve_pattern_blocks( $blocks ) { 1828 static $inner_content; 1829 // Keep track of seen references to avoid infinite loops. 1830 static $seen_refs = array(); 1831 $i = 0; 1832 while ( $i < count( $blocks ) ) { 1833 if ( 'core/pattern' === $blocks[ $i ]['blockName'] ) { 1834 $attrs = $blocks[ $i ]['attrs']; 1835 1836 if ( empty( $attrs['slug'] ) ) { 1837 ++$i; 1838 continue; 1839 } 1840 1841 $slug = $attrs['slug']; 1842 1843 if ( isset( $seen_refs[ $slug ] ) ) { 1844 // Skip recursive patterns. 1845 array_splice( $blocks, $i, 1 ); 1846 continue; 1847 } 1848 1849 $registry = WP_Block_Patterns_Registry::get_instance(); 1850 $pattern = $registry->get_registered( $slug ); 1851 1852 // Skip unknown patterns. 1853 if ( ! $pattern ) { 1854 ++$i; 1855 continue; 1856 } 1857 1858 $blocks_to_insert = parse_blocks( $pattern['content'] ); 1859 $seen_refs[ $slug ] = true; 1860 $prev_inner_content = $inner_content; 1861 $inner_content = null; 1862 $blocks_to_insert = resolve_pattern_blocks( $blocks_to_insert ); 1863 $inner_content = $prev_inner_content; 1864 unset( $seen_refs[ $slug ] ); 1865 array_splice( $blocks, $i, 1, $blocks_to_insert ); 1866 1867 // If we have inner content, we need to insert nulls in the 1868 // inner content array, otherwise serialize_blocks will skip 1869 // blocks. 1870 if ( $inner_content ) { 1871 $null_indices = array_keys( $inner_content, null, true ); 1872 $content_index = $null_indices[ $i ]; 1873 $nulls = array_fill( 0, count( $blocks_to_insert ), null ); 1874 array_splice( $inner_content, $content_index, 1, $nulls ); 1875 } 1876 1877 // Skip inserted blocks. 1878 $i += count( $blocks_to_insert ); 1879 } else { 1880 if ( ! empty( $blocks[ $i ]['innerBlocks'] ) ) { 1881 $prev_inner_content = $inner_content; 1882 $inner_content = $blocks[ $i ]['innerContent']; 1883 $blocks[ $i ]['innerBlocks'] = resolve_pattern_blocks( 1884 $blocks[ $i ]['innerBlocks'] 1885 ); 1886 $blocks[ $i ]['innerContent'] = $inner_content; 1887 $inner_content = $prev_inner_content; 1888 } 1889 ++$i; 1890 } 1891 } 1892 return $blocks; 1893 } 1894 1895 /** 1896 * Given an array of parsed block trees, applies callbacks before and after serializing them and 1897 * returns their concatenated output. 1898 * 1899 * Recursively traverses the blocks and their inner blocks and applies the two callbacks provided as 1900 * arguments, the first one before serializing a block, and the second one after serializing. 1901 * If either callback returns a string value, it will be prepended and appended to the serialized 1902 * block markup, respectively. 1903 * 1904 * The callbacks will receive a reference to the current block as their first argument, so that they 1905 * can also modify it, and the current block's parent block as second argument. Finally, the 1906 * `$pre_callback` receives the previous block, whereas the `$post_callback` receives 1907 * the next block as third argument. 1908 * 1909 * Serialized blocks are returned including comment delimiters, and with all attributes serialized. 1910 * 1911 * This function should be used when there is a need to modify the saved blocks, or to inject markup 1912 * into the return value. Prefer `serialize_blocks` when preparing blocks to be saved to post content. 1913 * 1914 * This function is meant for internal use only. 1915 * 1916 * @since 6.4.0 1917 * @access private 1918 * 1919 * @see serialize_blocks() 1920 * 1921 * @param array[] $blocks An array of parsed blocks. See WP_Block_Parser_Block. 1922 * @param callable $pre_callback Callback to run on each block in the tree before it is traversed and serialized. 1923 * It is called with the following arguments: &$block, $parent_block, $previous_block. 1924 * Its string return value will be prepended to the serialized block markup. 1925 * @param callable $post_callback Callback to run on each block in the tree after it is traversed and serialized. 1926 * It is called with the following arguments: &$block, $parent_block, $next_block. 1927 * Its string return value will be appended to the serialized block markup. 1928 * @return string Serialized block markup. 1929 */ 1930 function traverse_and_serialize_blocks( $blocks, $pre_callback = null, $post_callback = null ) { 1931 $result = ''; 1932 $parent_block = null; // At the top level, there is no parent block to pass to the callbacks; yet the callbacks expect a reference. 1933 1934 $pre_callback_is_callable = is_callable( $pre_callback ); 1935 $post_callback_is_callable = is_callable( $post_callback ); 1936 1937 foreach ( $blocks as $index => $block ) { 1938 if ( $pre_callback_is_callable ) { 1939 $prev = 0 === $index 1940 ? null 1941 : $blocks[ $index - 1 ]; 1942 1943 $result .= call_user_func_array( 1944 $pre_callback, 1945 array( &$block, &$parent_block, $prev ) 1946 ); 1947 } 1948 1949 if ( $post_callback_is_callable ) { 1950 $next = count( $blocks ) - 1 === $index 1951 ? null 1952 : $blocks[ $index + 1 ]; 1953 1954 $post_markup = call_user_func_array( 1955 $post_callback, 1956 array( &$block, &$parent_block, $next ) 1957 ); 1958 } 1959 1960 $result .= traverse_and_serialize_block( $block, $pre_callback, $post_callback ); 1961 $result .= isset( $post_markup ) ? $post_markup : ''; 1962 } 1963 1964 return $result; 1965 } 1966 1967 /** 1968 * Filters and sanitizes block content to remove non-allowable HTML 1969 * from parsed block attribute values. 1970 * 1971 * @since 5.3.1 1972 * 1973 * @param string $text Text that may contain block content. 1974 * @param array[]|string $allowed_html Optional. An array of allowed HTML elements and attributes, 1975 * or a context name such as 'post'. See wp_kses_allowed_html() 1976 * for the list of accepted context names. Default 'post'. 1977 * @param string[] $allowed_protocols Optional. Array of allowed URL protocols. 1978 * Defaults to the result of wp_allowed_protocols(). 1979 * @return string The filtered and sanitized content result. 1980 */ 1981 function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) { 1982 $result = ''; 1983 1984 if ( str_contains( $text, '<!--' ) && str_contains( $text, '--->' ) ) { 1985 $text = preg_replace_callback( '%<!--(.*?)--->%', '_filter_block_content_callback', $text ); 1986 } 1987 1988 $blocks = parse_blocks( $text ); 1989 foreach ( $blocks as $block ) { 1990 $block = filter_block_kses( $block, $allowed_html, $allowed_protocols ); 1991 $result .= serialize_block( $block ); 1992 } 1993 1994 return $result; 1995 } 1996 1997 /** 1998 * Callback used for regular expression replacement in filter_block_content(). 1999 * 2000 * @since 6.2.1 2001 * @access private 2002 * 2003 * @param array $matches Array of preg_replace_callback matches. 2004 * @return string Replacement string. 2005 */ 2006 function _filter_block_content_callback( $matches ) { 2007 return '<!--' . rtrim( $matches[1], '-' ) . '-->'; 2008 } 2009 2010 /** 2011 * Filters and sanitizes a parsed block to remove non-allowable HTML 2012 * from block attribute values. 2013 * 2014 * @since 5.3.1 2015 * 2016 * @param WP_Block_Parser_Block $block The parsed block object. 2017 * @param array[]|string $allowed_html An array of allowed HTML elements and attributes, 2018 * or a context name such as 'post'. See wp_kses_allowed_html() 2019 * for the list of accepted context names. 2020 * @param string[] $allowed_protocols Optional. Array of allowed URL protocols. 2021 * Defaults to the result of wp_allowed_protocols(). 2022 * @return array The filtered and sanitized block object result. 2023 */ 2024 function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) { 2025 $block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols, $block ); 2026 2027 if ( is_array( $block['innerBlocks'] ) ) { 2028 foreach ( $block['innerBlocks'] as $i => $inner_block ) { 2029 $block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols ); 2030 } 2031 } 2032 2033 return $block; 2034 } 2035 2036 /** 2037 * Filters and sanitizes a parsed block attribute value to remove 2038 * non-allowable HTML. 2039 * 2040 * @since 5.3.1 2041 * @since 6.5.5 Added the `$block_context` parameter. 2042 * 2043 * @param string[]|string $value The attribute value to filter. 2044 * @param array[]|string $allowed_html An array of allowed HTML elements and attributes, 2045 * or a context name such as 'post'. See wp_kses_allowed_html() 2046 * for the list of accepted context names. 2047 * @param string[] $allowed_protocols Optional. Array of allowed URL protocols. 2048 * Defaults to the result of wp_allowed_protocols(). 2049 * @param array $block_context Optional. The block the attribute belongs to, in parsed block array format. 2050 * @return string[]|string The filtered and sanitized result. 2051 */ 2052 function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array(), $block_context = null ) { 2053 if ( is_array( $value ) ) { 2054 foreach ( $value as $key => $inner_value ) { 2055 $filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols, $block_context ); 2056 $filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols, $block_context ); 2057 2058 if ( isset( $block_context['blockName'] ) && 'core/template-part' === $block_context['blockName'] ) { 2059 $filtered_value = filter_block_core_template_part_attributes( $filtered_value, $filtered_key, $allowed_html ); 2060 } 2061 if ( $filtered_key !== $key ) { 2062 unset( $value[ $key ] ); 2063 } 2064 2065 $value[ $filtered_key ] = $filtered_value; 2066 } 2067 } elseif ( is_string( $value ) ) { 2068 return wp_kses( $value, $allowed_html, $allowed_protocols ); 2069 } 2070 2071 return $value; 2072 } 2073 2074 /** 2075 * Sanitizes the value of the Template Part block's `tagName` attribute. 2076 * 2077 * @since 6.5.5 2078 * 2079 * @param string $attribute_value The attribute value to filter. 2080 * @param string $attribute_name The attribute name. 2081 * @param array[]|string $allowed_html An array of allowed HTML elements and attributes, 2082 * or a context name such as 'post'. See wp_kses_allowed_html() 2083 * for the list of accepted context names. 2084 * @return string The sanitized attribute value. 2085 */ 2086 function filter_block_core_template_part_attributes( $attribute_value, $attribute_name, $allowed_html ) { 2087 if ( empty( $attribute_value ) || 'tagName' !== $attribute_name ) { 2088 return $attribute_value; 2089 } 2090 if ( ! is_array( $allowed_html ) ) { 2091 $allowed_html = wp_kses_allowed_html( $allowed_html ); 2092 } 2093 return isset( $allowed_html[ $attribute_value ] ) ? $attribute_value : ''; 2094 } 2095 2096 /** 2097 * Parses blocks out of a content string, and renders those appropriate for the excerpt. 2098 * 2099 * As the excerpt should be a small string of text relevant to the full post content, 2100 * this function renders the blocks that are most likely to contain such text. 2101 * 2102 * @since 5.0.0 2103 * 2104 * @param string $content The content to parse. 2105 * @return string The parsed and filtered content. 2106 */ 2107 function excerpt_remove_blocks( $content ) { 2108 if ( ! has_blocks( $content ) ) { 2109 return $content; 2110 } 2111 2112 $allowed_inner_blocks = array( 2113 // Classic blocks have their blockName set to null. 2114 null, 2115 'core/freeform', 2116 'core/heading', 2117 'core/html', 2118 'core/list', 2119 'core/media-text', 2120 'core/paragraph', 2121 'core/preformatted', 2122 'core/pullquote', 2123 'core/quote', 2124 'core/table', 2125 'core/verse', 2126 ); 2127 2128 $allowed_wrapper_blocks = array( 2129 'core/columns', 2130 'core/column', 2131 'core/group', 2132 ); 2133 2134 /** 2135 * Filters the list of blocks that can be used as wrapper blocks, allowing 2136 * excerpts to be generated from the `innerBlocks` of these wrappers. 2137 * 2138 * @since 5.8.0 2139 * 2140 * @param string[] $allowed_wrapper_blocks The list of names of allowed wrapper blocks. 2141 */ 2142 $allowed_wrapper_blocks = apply_filters( 'excerpt_allowed_wrapper_blocks', $allowed_wrapper_blocks ); 2143 2144 $allowed_blocks = array_merge( $allowed_inner_blocks, $allowed_wrapper_blocks ); 2145 2146 /** 2147 * Filters the list of blocks that can contribute to the excerpt. 2148 * 2149 * If a dynamic block is added to this list, it must not generate another 2150 * excerpt, as this will cause an infinite loop to occur. 2151 * 2152 * @since 5.0.0 2153 * 2154 * @param string[] $allowed_blocks The list of names of allowed blocks. 2155 */ 2156 $allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks ); 2157 $blocks = parse_blocks( $content ); 2158 $output = ''; 2159 2160 foreach ( $blocks as $block ) { 2161 if ( in_array( $block['blockName'], $allowed_blocks, true ) ) { 2162 if ( ! empty( $block['innerBlocks'] ) ) { 2163 if ( in_array( $block['blockName'], $allowed_wrapper_blocks, true ) ) { 2164 $output .= _excerpt_render_inner_blocks( $block, $allowed_blocks ); 2165 continue; 2166 } 2167 2168 // Skip the block if it has disallowed or nested inner blocks. 2169 foreach ( $block['innerBlocks'] as $inner_block ) { 2170 if ( 2171 ! in_array( $inner_block['blockName'], $allowed_inner_blocks, true ) || 2172 ! empty( $inner_block['innerBlocks'] ) 2173 ) { 2174 continue 2; 2175 } 2176 } 2177 } 2178 2179 $output .= render_block( $block ); 2180 } 2181 } 2182 2183 return $output; 2184 } 2185 2186 /** 2187 * Parses footnotes markup out of a content string, 2188 * and renders those appropriate for the excerpt. 2189 * 2190 * @since 6.3.0 2191 * 2192 * @param string $content The content to parse. 2193 * @return string The parsed and filtered content. 2194 */ 2195 function excerpt_remove_footnotes( $content ) { 2196 if ( ! str_contains( $content, 'data-fn=' ) ) { 2197 return $content; 2198 } 2199 2200 return preg_replace( 2201 '_<sup data-fn="[^"]+" class="[^"]+">\s*<a href="[^"]+" id="[^"]+">\d+</a>\s*</sup>_', 2202 '', 2203 $content 2204 ); 2205 } 2206 2207 /** 2208 * Renders inner blocks from the allowed wrapper blocks 2209 * for generating an excerpt. 2210 * 2211 * @since 5.8.0 2212 * @access private 2213 * 2214 * @param array $parsed_block The parsed block. 2215 * @param array $allowed_blocks The list of allowed inner blocks. 2216 * @return string The rendered inner blocks. 2217 */ 2218 function _excerpt_render_inner_blocks( $parsed_block, $allowed_blocks ) { 2219 $output = ''; 2220 2221 foreach ( $parsed_block['innerBlocks'] as $inner_block ) { 2222 if ( ! in_array( $inner_block['blockName'], $allowed_blocks, true ) ) { 2223 continue; 2224 } 2225 2226 if ( empty( $inner_block['innerBlocks'] ) ) { 2227 $output .= render_block( $inner_block ); 2228 } else { 2229 $output .= _excerpt_render_inner_blocks( $inner_block, $allowed_blocks ); 2230 } 2231 } 2232 2233 return $output; 2234 } 2235 2236 /** 2237 * Renders a single block into a HTML string. 2238 * 2239 * @since 5.0.0 2240 * 2241 * @global WP_Post $post The post to edit. 2242 * 2243 * @param array $parsed_block { 2244 * An associative array of the block being rendered. See WP_Block_Parser_Block. 2245 * 2246 * @type string $blockName Name of block. 2247 * @type array $attrs Attributes from block comment delimiters. 2248 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2249 * have the same structure as this one. 2250 * @type string $innerHTML HTML from inside block comment delimiters. 2251 * @type array $innerContent List of string fragments and null markers where 2252 * inner blocks were found. 2253 * } 2254 * @return string String of rendered HTML. 2255 */ 2256 function render_block( $parsed_block ) { 2257 global $post; 2258 $parent_block = null; 2259 2260 /** 2261 * Allows render_block() to be short-circuited, by returning a non-null value. 2262 * 2263 * @since 5.1.0 2264 * @since 5.9.0 The `$parent_block` parameter was added. 2265 * 2266 * @param string|null $pre_render The pre-rendered content. Default null. 2267 * @param array $parsed_block { 2268 * An associative array of the block being rendered. See WP_Block_Parser_Block. 2269 * 2270 * @type string $blockName Name of block. 2271 * @type array $attrs Attributes from block comment delimiters. 2272 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2273 * have the same structure as this one. 2274 * @type string $innerHTML HTML from inside block comment delimiters. 2275 * @type array $innerContent List of string fragments and null markers where 2276 * inner blocks were found. 2277 * } 2278 * @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block. 2279 */ 2280 $pre_render = apply_filters( 'pre_render_block', null, $parsed_block, $parent_block ); 2281 if ( ! is_null( $pre_render ) ) { 2282 return $pre_render; 2283 } 2284 2285 $source_block = $parsed_block; 2286 2287 /** 2288 * Filters the block being rendered in render_block(), before it's processed. 2289 * 2290 * @since 5.1.0 2291 * @since 5.9.0 The `$parent_block` parameter was added. 2292 * 2293 * @param array $parsed_block { 2294 * An associative array of the block being rendered. See WP_Block_Parser_Block. 2295 * 2296 * @type string $blockName Name of block. 2297 * @type array $attrs Attributes from block comment delimiters. 2298 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2299 * have the same structure as this one. 2300 * @type string $innerHTML HTML from inside block comment delimiters. 2301 * @type array $innerContent List of string fragments and null markers where 2302 * inner blocks were found. 2303 * } 2304 * @param array $source_block { 2305 * An un-modified copy of `$parsed_block`, as it appeared in the source content. 2306 * See WP_Block_Parser_Block. 2307 * 2308 * @type string $blockName Name of block. 2309 * @type array $attrs Attributes from block comment delimiters. 2310 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2311 * have the same structure as this one. 2312 * @type string $innerHTML HTML from inside block comment delimiters. 2313 * @type array $innerContent List of string fragments and null markers where 2314 * inner blocks were found. 2315 * } 2316 * @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block. 2317 */ 2318 $parsed_block = apply_filters( 'render_block_data', $parsed_block, $source_block, $parent_block ); 2319 2320 $context = array(); 2321 2322 if ( $post instanceof WP_Post ) { 2323 $context['postId'] = $post->ID; 2324 2325 /* 2326 * The `postType` context is largely unnecessary server-side, since the ID 2327 * is usually sufficient on its own. That being said, since a block's 2328 * manifest is expected to be shared between the server and the client, 2329 * it should be included to consistently fulfill the expectation. 2330 */ 2331 $context['postType'] = $post->post_type; 2332 } 2333 2334 /** 2335 * Filters the default context provided to a rendered block. 2336 * 2337 * @since 5.5.0 2338 * @since 5.9.0 The `$parent_block` parameter was added. 2339 * 2340 * @param array $context Default context. 2341 * @param array $parsed_block { 2342 * An associative array of the block being rendered. See WP_Block_Parser_Block. 2343 * 2344 * @type string $blockName Name of block. 2345 * @type array $attrs Attributes from block comment delimiters. 2346 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2347 * have the same structure as this one. 2348 * @type string $innerHTML HTML from inside block comment delimiters. 2349 * @type array $innerContent List of string fragments and null markers where 2350 * inner blocks were found. 2351 * } 2352 * @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block. 2353 */ 2354 $context = apply_filters( 'render_block_context', $context, $parsed_block, $parent_block ); 2355 2356 $block = new WP_Block( $parsed_block, $context ); 2357 2358 return $block->render(); 2359 } 2360 2361 /** 2362 * Parses blocks out of a content string. 2363 * 2364 * @since 5.0.0 2365 * 2366 * @param string $content Post content. 2367 * @return array[] { 2368 * Array of block structures. 2369 * 2370 * @type array ...$0 { 2371 * An associative array of a single parsed block object. See WP_Block_Parser_Block. 2372 * 2373 * @type string $blockName Name of block. 2374 * @type array $attrs Attributes from block comment delimiters. 2375 * @type array[] $innerBlocks List of inner blocks. An array of arrays that 2376 * have the same structure as this one. 2377 * @type string $innerHTML HTML from inside block comment delimiters. 2378 * @type array $innerContent List of string fragments and null markers where 2379 * inner blocks were found. 2380 * } 2381 * } 2382 */ 2383 function parse_blocks( $content ) { 2384 /** 2385 * Filter to allow plugins to replace the server-side block parser. 2386 * 2387 * @since 5.0.0 2388 * 2389 * @param string $parser_class Name of block parser class. 2390 */ 2391 $parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' ); 2392 2393 $parser = new $parser_class(); 2394 return $parser->parse( $content ); 2395 } 2396 2397 /** 2398 * Parses dynamic blocks out of `post_content` and re-renders them. 2399 * 2400 * @since 5.0.0 2401 * 2402 * @param string $content Post content. 2403 * @return string Updated post content. 2404 */ 2405 function do_blocks( $content ) { 2406 $blocks = parse_blocks( $content ); 2407 $output = ''; 2408 2409 foreach ( $blocks as $block ) { 2410 $output .= render_block( $block ); 2411 } 2412 2413 // If there are blocks in this content, we shouldn't run wpautop() on it later. 2414 $priority = has_filter( 'the_content', 'wpautop' ); 2415 if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) { 2416 remove_filter( 'the_content', 'wpautop', $priority ); 2417 add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 ); 2418 } 2419 2420 return $output; 2421 } 2422 2423 /** 2424 * If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards, 2425 * for subsequent `the_content` usage. 2426 * 2427 * @since 5.0.0 2428 * @access private 2429 * 2430 * @param string $content The post content running through this filter. 2431 * @return string The unmodified content. 2432 */ 2433 function _restore_wpautop_hook( $content ) { 2434 $current_priority = has_filter( 'the_content', '_restore_wpautop_hook' ); 2435 2436 add_filter( 'the_content', 'wpautop', $current_priority - 1 ); 2437 remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority ); 2438 2439 return $content; 2440 } 2441 2442 /** 2443 * Returns the current version of the block format that the content string is using. 2444 * 2445 * If the string doesn't contain blocks, it returns 0. 2446 * 2447 * @since 5.0.0 2448 * 2449 * @param string $content Content to test. 2450 * @return int The block format version is 1 if the content contains one or more blocks, 0 otherwise. 2451 */ 2452 function block_version( $content ) { 2453 return has_blocks( $content ) ? 1 : 0; 2454 } 2455 2456 /** 2457 * Registers a new block style. 2458 * 2459 * @since 5.3.0 2460 * @since 6.6.0 Added support for registering styles for multiple block types. 2461 * 2462 * @link https://developer.wordpress.org/block-editor/reference-guides/block-api/block-styles/ 2463 * 2464 * @param string|string[] $block_name Block type name including namespace or array of namespaced block type names. 2465 * @param array $style_properties Array containing the properties of the style name, label, 2466 * style_handle (name of the stylesheet to be enqueued), 2467 * inline_style (string containing the CSS to be added), 2468 * style_data (theme.json-like array to generate CSS from). 2469 * See WP_Block_Styles_Registry::register(). 2470 * @return bool True if the block style was registered with success and false otherwise. 2471 */ 2472 function register_block_style( $block_name, $style_properties ) { 2473 return WP_Block_Styles_Registry::get_instance()->register( $block_name, $style_properties ); 2474 } 2475 2476 /** 2477 * Unregisters a block style. 2478 * 2479 * @since 5.3.0 2480 * 2481 * @param string $block_name Block type name including namespace. 2482 * @param string $block_style_name Block style name. 2483 * @return bool True if the block style was unregistered with success and false otherwise. 2484 */ 2485 function unregister_block_style( $block_name, $block_style_name ) { 2486 return WP_Block_Styles_Registry::get_instance()->unregister( $block_name, $block_style_name ); 2487 } 2488 2489 /** 2490 * Checks whether the current block type supports the feature requested. 2491 * 2492 * @since 5.8.0 2493 * @since 6.4.0 The `$feature` parameter now supports a string. 2494 * 2495 * @param WP_Block_Type $block_type Block type to check for support. 2496 * @param string|array $feature Feature slug, or path to a specific feature to check support for. 2497 * @param mixed $default_value Optional. Fallback value for feature support. Default false. 2498 * @return bool Whether the feature is supported. 2499 */ 2500 function block_has_support( $block_type, $feature, $default_value = false ) { 2501 $block_support = $default_value; 2502 if ( $block_type instanceof WP_Block_Type ) { 2503 if ( is_array( $feature ) && count( $feature ) === 1 ) { 2504 $feature = $feature[0]; 2505 } 2506 2507 if ( is_array( $feature ) ) { 2508 $block_support = _wp_array_get( $block_type->supports, $feature, $default_value ); 2509 } elseif ( isset( $block_type->supports[ $feature ] ) ) { 2510 $block_support = $block_type->supports[ $feature ]; 2511 } 2512 } 2513 2514 return true === $block_support || is_array( $block_support ); 2515 } 2516 2517 /** 2518 * Converts typography keys declared under `supports.*` to `supports.typography.*`. 2519 * 2520 * Displays a `_doing_it_wrong()` notice when a block using the older format is detected. 2521 * 2522 * @since 5.8.0 2523 * 2524 * @param array $metadata Metadata for registering a block type. 2525 * @return array Filtered metadata for registering a block type. 2526 */ 2527 function wp_migrate_old_typography_shape( $metadata ) { 2528 if ( ! isset( $metadata['supports'] ) ) { 2529 return $metadata; 2530 } 2531 2532 $typography_keys = array( 2533 '__experimentalFontFamily', 2534 '__experimentalFontStyle', 2535 '__experimentalFontWeight', 2536 '__experimentalLetterSpacing', 2537 '__experimentalTextDecoration', 2538 '__experimentalTextTransform', 2539 'fontSize', 2540 'lineHeight', 2541 ); 2542 2543 foreach ( $typography_keys as $typography_key ) { 2544 $support_for_key = isset( $metadata['supports'][ $typography_key ] ) ? $metadata['supports'][ $typography_key ] : null; 2545 2546 if ( null !== $support_for_key ) { 2547 _doing_it_wrong( 2548 'register_block_type_from_metadata()', 2549 sprintf( 2550 /* translators: 1: Block type, 2: Typography supports key, e.g: fontSize, lineHeight, etc. 3: block.json, 4: Old metadata key, 5: New metadata key. */ 2551 __( 'Block "%1$s" is declaring %2$s support in %3$s file under %4$s. %2$s support is now declared under %5$s.' ), 2552 $metadata['name'], 2553 "<code>$typography_key</code>", 2554 '<code>block.json</code>', 2555 "<code>supports.$typography_key</code>", 2556 "<code>supports.typography.$typography_key</code>" 2557 ), 2558 '5.8.0' 2559 ); 2560 2561 _wp_array_set( $metadata['supports'], array( 'typography', $typography_key ), $support_for_key ); 2562 unset( $metadata['supports'][ $typography_key ] ); 2563 } 2564 } 2565 2566 return $metadata; 2567 } 2568 2569 /** 2570 * Helper function that constructs a WP_Query args array from 2571 * a `Query` block properties. 2572 * 2573 * It's used in Query Loop, Query Pagination Numbers and Query Pagination Next blocks. 2574 * 2575 * @since 5.8.0 2576 * @since 6.1.0 Added `query_loop_block_query_vars` filter and `parents` support in query. 2577 * @since 6.7.0 Added support for the `format` property in query. 2578 * 2579 * @param WP_Block $block Block instance. 2580 * @param int $page Current query's page. 2581 * 2582 * @return array Returns the constructed WP_Query arguments. 2583 */ 2584 function build_query_vars_from_query_block( $block, $page ) { 2585 $query = array( 2586 'post_type' => 'post', 2587 'order' => 'DESC', 2588 'orderby' => 'date', 2589 'post__not_in' => array(), 2590 'tax_query' => array(), 2591 ); 2592 2593 if ( isset( $block->context['query'] ) ) { 2594 if ( ! empty( $block->context['query']['postType'] ) ) { 2595 $post_type_param = $block->context['query']['postType']; 2596 if ( is_post_type_viewable( $post_type_param ) ) { 2597 $query['post_type'] = $post_type_param; 2598 } 2599 } 2600 if ( isset( $block->context['query']['sticky'] ) && ! empty( $block->context['query']['sticky'] ) ) { 2601 $sticky = get_option( 'sticky_posts' ); 2602 if ( 'only' === $block->context['query']['sticky'] ) { 2603 /* 2604 * Passing an empty array to post__in will return have_posts() as true (and all posts will be returned). 2605 * Logic should be used before hand to determine if WP_Query should be used in the event that the array 2606 * being passed to post__in is empty. 2607 * 2608 * @see https://core.trac.wordpress.org/ticket/28099 2609 */ 2610 $query['post__in'] = ! empty( $sticky ) ? $sticky : array( 0 ); 2611 $query['ignore_sticky_posts'] = 1; 2612 } elseif ( 'exclude' === $block->context['query']['sticky'] ) { 2613 $query['post__not_in'] = array_merge( $query['post__not_in'], $sticky ); 2614 } elseif ( 'ignore' === $block->context['query']['sticky'] ) { 2615 $query['ignore_sticky_posts'] = 1; 2616 } 2617 } 2618 if ( ! empty( $block->context['query']['exclude'] ) ) { 2619 $excluded_post_ids = array_map( 'intval', $block->context['query']['exclude'] ); 2620 $excluded_post_ids = array_filter( $excluded_post_ids ); 2621 $query['post__not_in'] = array_merge( $query['post__not_in'], $excluded_post_ids ); 2622 } 2623 if ( 2624 isset( $block->context['query']['perPage'] ) && 2625 is_numeric( $block->context['query']['perPage'] ) 2626 ) { 2627 $per_page = absint( $block->context['query']['perPage'] ); 2628 $offset = 0; 2629 2630 if ( 2631 isset( $block->context['query']['offset'] ) && 2632 is_numeric( $block->context['query']['offset'] ) 2633 ) { 2634 $offset = absint( $block->context['query']['offset'] ); 2635 } 2636 2637 $query['offset'] = ( $per_page * ( $page - 1 ) ) + $offset; 2638 $query['posts_per_page'] = $per_page; 2639 } 2640 // Migrate `categoryIds` and `tagIds` to `tax_query` for backwards compatibility. 2641 if ( ! empty( $block->context['query']['categoryIds'] ) || ! empty( $block->context['query']['tagIds'] ) ) { 2642 $tax_query_back_compat = array(); 2643 if ( ! empty( $block->context['query']['categoryIds'] ) ) { 2644 $tax_query_back_compat[] = array( 2645 'taxonomy' => 'category', 2646 'terms' => array_filter( array_map( 'intval', $block->context['query']['categoryIds'] ) ), 2647 'include_children' => false, 2648 ); 2649 } 2650 if ( ! empty( $block->context['query']['tagIds'] ) ) { 2651 $tax_query_back_compat[] = array( 2652 'taxonomy' => 'post_tag', 2653 'terms' => array_filter( array_map( 'intval', $block->context['query']['tagIds'] ) ), 2654 'include_children' => false, 2655 ); 2656 } 2657 $query['tax_query'] = array_merge( $query['tax_query'], $tax_query_back_compat ); 2658 } 2659 if ( ! empty( $block->context['query']['taxQuery'] ) ) { 2660 $tax_query = array(); 2661 foreach ( $block->context['query']['taxQuery'] as $taxonomy => $terms ) { 2662 if ( is_taxonomy_viewable( $taxonomy ) && ! empty( $terms ) ) { 2663 $tax_query[] = array( 2664 'taxonomy' => $taxonomy, 2665 'terms' => array_filter( array_map( 'intval', $terms ) ), 2666 'include_children' => false, 2667 ); 2668 } 2669 } 2670 $query['tax_query'] = array_merge( $query['tax_query'], $tax_query ); 2671 } 2672 if ( ! empty( $block->context['query']['format'] ) && is_array( $block->context['query']['format'] ) ) { 2673 $formats = $block->context['query']['format']; 2674 /* 2675 * Validate that the format is either `standard` or a supported post format. 2676 * - First, add `standard` to the array of valid formats. 2677 * - Then, remove any invalid formats. 2678 */ 2679 $valid_formats = array_merge( array( 'standard' ), get_post_format_slugs() ); 2680 $formats = array_intersect( $formats, $valid_formats ); 2681 2682 /* 2683 * The relation needs to be set to `OR` since the request can contain 2684 * two separate conditions. The user may be querying for items that have 2685 * either the `standard` format or a specific format. 2686 */ 2687 $formats_query = array( 'relation' => 'OR' ); 2688 2689 /* 2690 * The default post format, `standard`, is not stored in the database. 2691 * If `standard` is part of the request, the query needs to exclude all post items that 2692 * have a format assigned. 2693 */ 2694 if ( in_array( 'standard', $formats, true ) ) { 2695 $formats_query[] = array( 2696 'taxonomy' => 'post_format', 2697 'field' => 'slug', 2698 'operator' => 'NOT EXISTS', 2699 ); 2700 // Remove the `standard` format, since it cannot be queried. 2701 unset( $formats[ array_search( 'standard', $formats, true ) ] ); 2702 } 2703 // Add any remaining formats to the formats query. 2704 if ( ! empty( $formats ) ) { 2705 // Add the `post-format-` prefix. 2706 $terms = array_map( 2707 static function ( $format ) { 2708 return "post-format-$format"; 2709 }, 2710 $formats 2711 ); 2712 $formats_query[] = array( 2713 'taxonomy' => 'post_format', 2714 'field' => 'slug', 2715 'terms' => $terms, 2716 'operator' => 'IN', 2717 ); 2718 } 2719 2720 /* 2721 * Add `$formats_query` to `$query`, as long as it contains more than one key: 2722 * If `$formats_query` only contains the initial `relation` key, there are no valid formats to query, 2723 * and the query should not be modified. 2724 */ 2725 if ( count( $formats_query ) > 1 ) { 2726 // Enable filtering by both post formats and other taxonomies by combining them with `AND`. 2727 if ( empty( $query['tax_query'] ) ) { 2728 $query['tax_query'] = $formats_query; 2729 } else { 2730 $query['tax_query'] = array( 2731 'relation' => 'AND', 2732 $query['tax_query'], 2733 $formats_query, 2734 ); 2735 } 2736 } 2737 } 2738 2739 if ( 2740 isset( $block->context['query']['order'] ) && 2741 in_array( strtoupper( $block->context['query']['order'] ), array( 'ASC', 'DESC' ), true ) 2742 ) { 2743 $query['order'] = strtoupper( $block->context['query']['order'] ); 2744 } 2745 if ( isset( $block->context['query']['orderBy'] ) ) { 2746 $query['orderby'] = $block->context['query']['orderBy']; 2747 } 2748 if ( 2749 isset( $block->context['query']['author'] ) 2750 ) { 2751 if ( is_array( $block->context['query']['author'] ) ) { 2752 $query['author__in'] = array_filter( array_map( 'intval', $block->context['query']['author'] ) ); 2753 } elseif ( is_string( $block->context['query']['author'] ) ) { 2754 $query['author__in'] = array_filter( array_map( 'intval', explode( ',', $block->context['query']['author'] ) ) ); 2755 } elseif ( is_int( $block->context['query']['author'] ) && $block->context['query']['author'] > 0 ) { 2756 $query['author'] = $block->context['query']['author']; 2757 } 2758 } 2759 if ( ! empty( $block->context['query']['search'] ) ) { 2760 $query['s'] = $block->context['query']['search']; 2761 } 2762 if ( ! empty( $block->context['query']['parents'] ) && is_post_type_hierarchical( $query['post_type'] ) ) { 2763 $query['post_parent__in'] = array_unique( array_map( 'intval', $block->context['query']['parents'] ) ); 2764 } 2765 } 2766 2767 /** 2768 * Filters the arguments which will be passed to `WP_Query` for the Query Loop Block. 2769 * 2770 * Anything to this filter should be compatible with the `WP_Query` API to form 2771 * the query context which will be passed down to the Query Loop Block's children. 2772 * This can help, for example, to include additional settings or meta queries not 2773 * directly supported by the core Query Loop Block, and extend its capabilities. 2774 * 2775 * Please note that this will only influence the query that will be rendered on the 2776 * front-end. The editor preview is not affected by this filter. Also, worth noting 2777 * that the editor preview uses the REST API, so, ideally, one should aim to provide 2778 * attributes which are also compatible with the REST API, in order to be able to 2779 * implement identical queries on both sides. 2780 * 2781 * @since 6.1.0 2782 * 2783 * @param array $query Array containing parameters for `WP_Query` as parsed by the block context. 2784 * @param WP_Block $block Block instance. 2785 * @param int $page Current query's page. 2786 */ 2787 return apply_filters( 'query_loop_block_query_vars', $query, $block, $page ); 2788 } 2789 2790 /** 2791 * Helper function that returns the proper pagination arrow HTML for 2792 * `QueryPaginationNext` and `QueryPaginationPrevious` blocks based 2793 * on the provided `paginationArrow` from `QueryPagination` context. 2794 * 2795 * It's used in QueryPaginationNext and QueryPaginationPrevious blocks. 2796 * 2797 * @since 5.9.0 2798 * 2799 * @param WP_Block $block Block instance. 2800 * @param bool $is_next Flag for handling `next/previous` blocks. 2801 * @return string|null The pagination arrow HTML or null if there is none. 2802 */ 2803 function get_query_pagination_arrow( $block, $is_next ) { 2804 $arrow_map = array( 2805 'none' => '', 2806 'arrow' => array( 2807 'next' => '→', 2808 'previous' => '←', 2809 ), 2810 'chevron' => array( 2811 'next' => '»', 2812 'previous' => '«', 2813 ), 2814 ); 2815 if ( ! empty( $block->context['paginationArrow'] ) && array_key_exists( $block->context['paginationArrow'], $arrow_map ) && ! empty( $arrow_map[ $block->context['paginationArrow'] ] ) ) { 2816 $pagination_type = $is_next ? 'next' : 'previous'; 2817 $arrow_attribute = $block->context['paginationArrow']; 2818 $arrow = $arrow_map[ $block->context['paginationArrow'] ][ $pagination_type ]; 2819 $arrow_classes = "wp-block-query-pagination-$pagination_type-arrow is-arrow-$arrow_attribute"; 2820 return "<span class='$arrow_classes' aria-hidden='true'>$arrow</span>"; 2821 } 2822 return null; 2823 } 2824 2825 /** 2826 * Helper function that constructs a comment query vars array from the passed 2827 * block properties. 2828 * 2829 * It's used with the Comment Query Loop inner blocks. 2830 * 2831 * @since 6.0.0 2832 * 2833 * @param WP_Block $block Block instance. 2834 * @return array Returns the comment query parameters to use with the 2835 * WP_Comment_Query constructor. 2836 */ 2837 function build_comment_query_vars_from_block( $block ) { 2838 2839 $comment_args = array( 2840 'orderby' => 'comment_date_gmt', 2841 'order' => 'ASC', 2842 'status' => 'approve', 2843 'no_found_rows' => false, 2844 ); 2845 2846 if ( is_user_logged_in() ) { 2847 $comment_args['include_unapproved'] = array( get_current_user_id() ); 2848 } else { 2849 $unapproved_email = wp_get_unapproved_comment_author_email(); 2850 2851 if ( $unapproved_email ) { 2852 $comment_args['include_unapproved'] = array( $unapproved_email ); 2853 } 2854 } 2855 2856 if ( ! empty( $block->context['postId'] ) ) { 2857 $comment_args['post_id'] = (int) $block->context['postId']; 2858 } 2859 2860 if ( get_option( 'thread_comments' ) ) { 2861 $comment_args['hierarchical'] = 'threaded'; 2862 } else { 2863 $comment_args['hierarchical'] = false; 2864 } 2865 2866 if ( get_option( 'page_comments' ) === '1' || get_option( 'page_comments' ) === true ) { 2867 $per_page = get_option( 'comments_per_page' ); 2868 $default_page = get_option( 'default_comments_page' ); 2869 if ( $per_page > 0 ) { 2870 $comment_args['number'] = $per_page; 2871 2872 $page = (int) get_query_var( 'cpage' ); 2873 if ( $page ) { 2874 $comment_args['paged'] = $page; 2875 } elseif ( 'oldest' === $default_page ) { 2876 $comment_args['paged'] = 1; 2877 } elseif ( 'newest' === $default_page ) { 2878 $max_num_pages = (int) ( new WP_Comment_Query( $comment_args ) )->max_num_pages; 2879 if ( 0 !== $max_num_pages ) { 2880 $comment_args['paged'] = $max_num_pages; 2881 } 2882 } 2883 } 2884 } 2885 2886 return $comment_args; 2887 } 2888 2889 /** 2890 * Helper function that returns the proper pagination arrow HTML for 2891 * `CommentsPaginationNext` and `CommentsPaginationPrevious` blocks based on the 2892 * provided `paginationArrow` from `CommentsPagination` context. 2893 * 2894 * It's used in CommentsPaginationNext and CommentsPaginationPrevious blocks. 2895 * 2896 * @since 6.0.0 2897 * 2898 * @param WP_Block $block Block instance. 2899 * @param string $pagination_type Optional. Type of the arrow we will be rendering. 2900 * Accepts 'next' or 'previous'. Default 'next'. 2901 * @return string|null The pagination arrow HTML or null if there is none. 2902 */ 2903 function get_comments_pagination_arrow( $block, $pagination_type = 'next' ) { 2904 $arrow_map = array( 2905 'none' => '', 2906 'arrow' => array( 2907 'next' => '→', 2908 'previous' => '←', 2909 ), 2910 'chevron' => array( 2911 'next' => '»', 2912 'previous' => '«', 2913 ), 2914 ); 2915 if ( ! empty( $block->context['comments/paginationArrow'] ) && ! empty( $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ] ) ) { 2916 $arrow_attribute = $block->context['comments/paginationArrow']; 2917 $arrow = $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ]; 2918 $arrow_classes = "wp-block-comments-pagination-$pagination_type-arrow is-arrow-$arrow_attribute"; 2919 return "<span class='$arrow_classes' aria-hidden='true'>$arrow</span>"; 2920 } 2921 return null; 2922 } 2923 2924 /** 2925 * Strips all HTML from the content of footnotes, and sanitizes the ID. 2926 * 2927 * This function expects slashed data on the footnotes content. 2928 * 2929 * @access private 2930 * @since 6.3.2 2931 * 2932 * @param string $footnotes JSON-encoded string of an array containing the content and ID of each footnote. 2933 * @return string Filtered content without any HTML on the footnote content and with the sanitized ID. 2934 */ 2935 function _wp_filter_post_meta_footnotes( $footnotes ) { 2936 $footnotes_decoded = json_decode( $footnotes, true ); 2937 if ( ! is_array( $footnotes_decoded ) ) { 2938 return ''; 2939 } 2940 $footnotes_sanitized = array(); 2941 foreach ( $footnotes_decoded as $footnote ) { 2942 if ( ! empty( $footnote['content'] ) && ! empty( $footnote['id'] ) ) { 2943 $footnotes_sanitized[] = array( 2944 'id' => sanitize_key( $footnote['id'] ), 2945 'content' => wp_unslash( wp_filter_post_kses( wp_slash( $footnote['content'] ) ) ), 2946 ); 2947 } 2948 } 2949 return wp_json_encode( $footnotes_sanitized ); 2950 } 2951 2952 /** 2953 * Adds the filters for footnotes meta field. 2954 * 2955 * @access private 2956 * @since 6.3.2 2957 */ 2958 function _wp_footnotes_kses_init_filters() { 2959 add_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' ); 2960 } 2961 2962 /** 2963 * Removes the filters for footnotes meta field. 2964 * 2965 * @access private 2966 * @since 6.3.2 2967 */ 2968 function _wp_footnotes_remove_filters() { 2969 remove_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' ); 2970 } 2971 2972 /** 2973 * Registers the filter of footnotes meta field if the user does not have `unfiltered_html` capability. 2974 * 2975 * @access private 2976 * @since 6.3.2 2977 */ 2978 function _wp_footnotes_kses_init() { 2979 _wp_footnotes_remove_filters(); 2980 if ( ! current_user_can( 'unfiltered_html' ) ) { 2981 _wp_footnotes_kses_init_filters(); 2982 } 2983 } 2984 2985 /** 2986 * Initializes the filters for footnotes meta field when imported data should be filtered. 2987 * 2988 * This filter is the last one being executed on {@see 'force_filtered_html_on_import'}. 2989 * If the input of the filter is true, it means we are in an import situation and should 2990 * enable kses, independently of the user capabilities. So in that case we call 2991 * _wp_footnotes_kses_init_filters(). 2992 * 2993 * @access private 2994 * @since 6.3.2 2995 * 2996 * @param string $arg Input argument of the filter. 2997 * @return string Input argument of the filter. 2998 */ 2999 function _wp_footnotes_force_filtered_html_on_import_filter( $arg ) { 3000 // If `force_filtered_html_on_import` is true, we need to init the global styles kses filters. 3001 if ( $arg ) { 3002 _wp_footnotes_kses_init_filters(); 3003 } 3004 return $arg; 3005 }
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