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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Tidy; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use Wikimedia\RemexHtml\HTMLData; |
| 7 | use Wikimedia\RemexHtml\Serializer\Serializer; |
| 8 | use Wikimedia\RemexHtml\Serializer\SerializerNode; |
| 9 | use Wikimedia\RemexHtml\Tokenizer\Attributes; |
| 10 | use Wikimedia\RemexHtml\Tokenizer\PlainAttributes; |
| 11 | use Wikimedia\RemexHtml\TreeBuilder\Element; |
| 12 | use Wikimedia\RemexHtml\TreeBuilder\TreeBuilder; |
| 13 | use Wikimedia\RemexHtml\TreeBuilder\TreeHandler; |
| 14 | |
| 15 | /** |
| 16 | * @internal |
| 17 | */ |
| 18 | class RemexCompatMunger implements TreeHandler { |
| 19 | private const ONLY_INLINE_ELEMENTS = [ |
| 20 | "a" => true, |
| 21 | "abbr" => true, |
| 22 | "acronym" => true, |
| 23 | "applet" => true, |
| 24 | "b" => true, |
| 25 | "basefont" => true, |
| 26 | "bdo" => true, |
| 27 | "big" => true, |
| 28 | "br" => true, |
| 29 | "button" => true, |
| 30 | "cite" => true, |
| 31 | "code" => true, |
| 32 | "del" => true, |
| 33 | "dfn" => true, |
| 34 | "em" => true, |
| 35 | "font" => true, |
| 36 | "i" => true, |
| 37 | "iframe" => true, |
| 38 | "img" => true, |
| 39 | "input" => true, |
| 40 | "ins" => true, |
| 41 | "kbd" => true, |
| 42 | "label" => true, |
| 43 | "legend" => true, |
| 44 | "map" => true, |
| 45 | "object" => true, |
| 46 | "param" => true, |
| 47 | "q" => true, |
| 48 | "rb" => true, |
| 49 | "rbc" => true, |
| 50 | "rp" => true, |
| 51 | "rt" => true, |
| 52 | "rtc" => true, |
| 53 | "ruby" => true, |
| 54 | "s" => true, |
| 55 | "samp" => true, |
| 56 | "select" => true, |
| 57 | "small" => true, |
| 58 | "span" => true, |
| 59 | "strike" => true, |
| 60 | "strong" => true, |
| 61 | "sub" => true, |
| 62 | "sup" => true, |
| 63 | "textarea" => true, |
| 64 | "tt" => true, |
| 65 | "u" => true, |
| 66 | "var" => true, |
| 67 | // Those defined in tidy.conf |
| 68 | "video" => true, |
| 69 | "audio" => true, |
| 70 | "bdi" => true, |
| 71 | "data" => true, |
| 72 | "time" => true, |
| 73 | "mark" => true, |
| 74 | ]; |
| 75 | |
| 76 | /** |
| 77 | * For the purposes of this class, "metadata" elements are those that |
| 78 | * should neither trigger p-wrapping nor stop an outer p-wrapping, |
| 79 | * typically those that are themselves invisible in a browser's rendering. |
| 80 | * This isn't a complete list, it's just the tags that we're likely to |
| 81 | * encounter in practice. |
| 82 | */ |
| 83 | private const METADATA_ELEMENTS = [ |
| 84 | 'style' => true, |
| 85 | 'script' => true, |
| 86 | 'link' => true, |
| 87 | // Except for the TableOfContentsMarker (see ::isTableOfContentsMarker() |
| 88 | // and Parser::TOC_PLACEHOLDER) which should break a paragraph. |
| 89 | 'meta' => true, |
| 90 | ]; |
| 91 | |
| 92 | private const FORMATTING_ELEMENTS = [ |
| 93 | 'a' => true, |
| 94 | 'b' => true, |
| 95 | 'big' => true, |
| 96 | 'code' => true, |
| 97 | 'em' => true, |
| 98 | 'font' => true, |
| 99 | 'i' => true, |
| 100 | 'nobr' => true, |
| 101 | 's' => true, |
| 102 | 'small' => true, |
| 103 | 'strike' => true, |
| 104 | 'strong' => true, |
| 105 | 'tt' => true, |
| 106 | 'u' => true, |
| 107 | ]; |
| 108 | |
| 109 | /** @var Serializer */ |
| 110 | private $serializer; |
| 111 | |
| 112 | /** @var bool */ |
| 113 | private $trace; |
| 114 | |
| 115 | /** |
| 116 | * @param Serializer $serializer |
| 117 | * @param bool $trace |
| 118 | */ |
| 119 | public function __construct( Serializer $serializer, $trace = false ) { |
| 120 | $this->serializer = $serializer; |
| 121 | $this->trace = $trace; |
| 122 | } |
| 123 | |
| 124 | public function startDocument( $fragmentNamespace, $fragmentName ) { |
| 125 | $this->serializer->startDocument( $fragmentNamespace, $fragmentName ); |
| 126 | $root = $this->serializer->getRootNode(); |
| 127 | $root->snData = new RemexMungerData; |
| 128 | $root->snData->needsPWrapping = true; |
| 129 | } |
| 130 | |
| 131 | public function endDocument( $pos ) { |
| 132 | $this->serializer->endDocument( $pos ); |
| 133 | } |
| 134 | |
| 135 | private function getParentForInsert( $preposition, $refElement ) { |
| 136 | if ( $preposition === TreeBuilder::ROOT ) { |
| 137 | return [ $this->serializer->getRootNode(), null ]; |
| 138 | } elseif ( $preposition === TreeBuilder::BEFORE ) { |
| 139 | $refNode = $refElement->userData; |
| 140 | return [ $this->serializer->getParentNode( $refNode ), $refNode ]; |
| 141 | } else { |
| 142 | $refNode = $refElement->userData; |
| 143 | $refData = $refNode->snData; |
| 144 | if ( $refData->currentCloneElement ) { |
| 145 | // Follow a chain of clone links if necessary |
| 146 | $origRefData = $refData; |
| 147 | while ( $refData->currentCloneElement ) { |
| 148 | $refElement = $refData->currentCloneElement; |
| 149 | $refNode = $refElement->userData; |
| 150 | $refData = $refNode->snData; |
| 151 | } |
| 152 | // Cache the end of the chain in the requested element |
| 153 | $origRefData->currentCloneElement = $refElement; |
| 154 | } elseif ( $refData->childPElement ) { |
| 155 | $refElement = $refData->childPElement; |
| 156 | $refNode = $refElement->userData; |
| 157 | } |
| 158 | return [ $refNode, $refNode ]; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Insert a p-wrapper |
| 164 | * |
| 165 | * @param SerializerNode $parent |
| 166 | * @param int $sourceStart |
| 167 | * @return SerializerNode |
| 168 | */ |
| 169 | private function insertPWrapper( SerializerNode $parent, $sourceStart ) { |
| 170 | $pWrap = new Element( HTMLData::NS_HTML, 'mw:p-wrap', new PlainAttributes ); |
| 171 | $this->serializer->insertElement( TreeBuilder::UNDER, $parent, $pWrap, false, |
| 172 | $sourceStart, 0 ); |
| 173 | $data = new RemexMungerData; |
| 174 | $data->isPWrapper = true; |
| 175 | $data->wrapBaseNode = $parent; |
| 176 | $pWrap->userData->snData = $data; |
| 177 | $parent->snData->childPElement = $pWrap; |
| 178 | return $pWrap->userData; |
| 179 | } |
| 180 | |
| 181 | public function characters( $preposition, $refElement, $text, $start, $length, |
| 182 | $sourceStart, $sourceLength |
| 183 | ) { |
| 184 | $isBlank = strspn( $text, "\t\n\f\r ", $start, $length ) === $length; |
| 185 | |
| 186 | [ $parent, $refNode ] = $this->getParentForInsert( $preposition, $refElement ); |
| 187 | $parentData = $parent->snData; |
| 188 | |
| 189 | if ( $preposition === TreeBuilder::UNDER ) { |
| 190 | if ( $parentData->needsPWrapping && !$isBlank ) { |
| 191 | // Add a p-wrapper for bare text under body/blockquote |
| 192 | $refNode = $this->insertPWrapper( $refNode, $sourceStart ); |
| 193 | $parent = $refNode; |
| 194 | $parentData = $parent->snData; |
| 195 | } elseif ( $parentData->isSplittable && !$parentData->ancestorPNode ) { |
| 196 | // The parent is splittable and in block mode, so split the tag stack |
| 197 | $refNode = $this->splitTagStack( $refNode, true, $sourceStart ); |
| 198 | $parent = $refNode; |
| 199 | $parentData = $parent->snData; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | if ( !$isBlank ) { |
| 204 | // Non-whitespace characters detected |
| 205 | $parentData->nonblankNodeCount++; |
| 206 | } |
| 207 | $this->serializer->characters( $preposition, $refNode, $text, $start, |
| 208 | $length, $sourceStart, $sourceLength ); |
| 209 | } |
| 210 | |
| 211 | private function trace( $msg ) { |
| 212 | if ( $this->trace ) { |
| 213 | wfDebug( "[RCM] $msg" ); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Insert or reparent an element. Create p-wrappers or split the tag stack |
| 219 | * as necessary. |
| 220 | * |
| 221 | * Consider the following insertion locations. The parent may be: |
| 222 | * |
| 223 | * - A: A body or blockquote (!!needsPWrapping) |
| 224 | * - B: A p-wrapper (!!isPWrapper) |
| 225 | * - C: A descendant of a p-wrapper (!!ancestorPNode) |
| 226 | * - CS: With splittable formatting elements in the stack region up to |
| 227 | * the p-wrapper |
| 228 | * - CU: With one or more unsplittable elements in the stack region up |
| 229 | * to the p-wrapper |
| 230 | * - D: Not a descendant of a p-wrapper (!ancestorNode) |
| 231 | * - DS: With splittable formatting elements in the stack region up to |
| 232 | * the body or blockquote |
| 233 | * - DU: With one or more unsplittable elements in the stack region up |
| 234 | * to the body or blockquote |
| 235 | * |
| 236 | * And consider that we may insert two types of element: |
| 237 | * - b: block |
| 238 | * - i: inline |
| 239 | * |
| 240 | * We handle the insertion as follows: |
| 241 | * |
| 242 | * - A/i: Create a p-wrapper, insert under it |
| 243 | * - A/b: Insert as normal |
| 244 | * - B/i: Insert as normal |
| 245 | * - B/b: Close the p-wrapper, insert under the body/blockquote (wrap |
| 246 | * base) instead) |
| 247 | * - C/i: Insert as normal |
| 248 | * - CS/b: Split the tag stack, insert the block under cloned formatting |
| 249 | * elements which have the wrap base (the parent of the p-wrap) as |
| 250 | * their ultimate parent. |
| 251 | * - CU/b: Disable the p-wrap, by reparenting the currently open child |
| 252 | * of the p-wrap under the p-wrap's parent. Then insert the block as |
| 253 | * normal. |
| 254 | * - D/b: Insert as normal |
| 255 | * - DS/i: Split the tag stack, creating a new p-wrapper as the ultimate |
| 256 | * parent of the formatting elements thus cloned. The parent of the |
| 257 | * p-wrapper is the body or blockquote. |
| 258 | * - DU/i: Insert as normal |
| 259 | * |
| 260 | * FIXME: fostering ($preposition == BEFORE) is mostly done by inserting as |
| 261 | * normal, the full algorithm is not followed. |
| 262 | * |
| 263 | * @param int $preposition |
| 264 | * @param Element|SerializerNode|null $refElement |
| 265 | * @param Element $element |
| 266 | * @param bool $void |
| 267 | * @param int $sourceStart |
| 268 | * @param int $sourceLength |
| 269 | */ |
| 270 | public function insertElement( $preposition, $refElement, Element $element, $void, |
| 271 | $sourceStart, $sourceLength |
| 272 | ) { |
| 273 | [ $parent, $newRef ] = $this->getParentForInsert( $preposition, $refElement ); |
| 274 | $parentData = $parent->snData; |
| 275 | $elementName = $element->htmlName; |
| 276 | |
| 277 | $inline = isset( self::ONLY_INLINE_ELEMENTS[$elementName] ); |
| 278 | $under = $preposition === TreeBuilder::UNDER; |
| 279 | |
| 280 | if ( isset( self::METADATA_ELEMENTS[$elementName] ) |
| 281 | && !self::isTableOfContentsMarker( $element ) |
| 282 | ) { |
| 283 | // The element is a metadata element, that we allow to appear in |
| 284 | // both inline and block contexts. |
| 285 | $this->trace( 'insert metadata' ); |
| 286 | } elseif ( $under && $parentData->isPWrapper && !$inline ) { |
| 287 | // [B/b] The element is non-inline and the parent is a p-wrapper, |
| 288 | // close the parent and insert into its parent instead |
| 289 | $this->trace( 'insert B/b' ); |
| 290 | $newParent = $this->serializer->getParentNode( $parent ); |
| 291 | $parent = $newParent; |
| 292 | $parentData = $parent->snData; |
| 293 | $parentData->childPElement = null; |
| 294 | $newRef = $refElement->userData; |
| 295 | } elseif ( $under && $parentData->isSplittable |
| 296 | && (bool)$parentData->ancestorPNode !== $inline |
| 297 | ) { |
| 298 | // [CS/b, DS/i] The parent is splittable and the current element is |
| 299 | // inline in block context, or if the current element is a block |
| 300 | // under a p-wrapper, split the tag stack. |
| 301 | $this->trace( $inline ? 'insert DS/i' : 'insert CS/b' ); |
| 302 | $newRef = $this->splitTagStack( $newRef, $inline, $sourceStart ); |
| 303 | $parent = $newRef; |
| 304 | $parentData = $parent->snData; |
| 305 | } elseif ( $under && $parentData->needsPWrapping && $inline ) { |
| 306 | // [A/i] If the element is inline and we are in body/blockquote, |
| 307 | // we need to create a p-wrapper |
| 308 | $this->trace( 'insert A/i' ); |
| 309 | $newRef = $this->insertPWrapper( $newRef, $sourceStart ); |
| 310 | $parent = $newRef; |
| 311 | $parentData = $parent->snData; |
| 312 | } elseif ( $parentData->ancestorPNode && !$inline ) { |
| 313 | // [CU/b] If the element is non-inline and (despite attempting to |
| 314 | // split above) there is still an ancestor p-wrap, disable that |
| 315 | // p-wrap |
| 316 | $this->trace( 'insert CU/b' ); |
| 317 | $this->disablePWrapper( $parent, $sourceStart ); |
| 318 | } else { |
| 319 | // [A/b, B/i, C/i, D/b, DU/i] insert as normal |
| 320 | $this->trace( 'insert normal' ); |
| 321 | } |
| 322 | |
| 323 | // An element with element children is a non-blank element |
| 324 | $parentData->nonblankNodeCount++; |
| 325 | |
| 326 | // Insert the element downstream and so initialise its userData |
| 327 | $this->serializer->insertElement( $preposition, $newRef, |
| 328 | $element, $void, $sourceStart, $sourceLength ); |
| 329 | |
| 330 | // Initialise snData |
| 331 | if ( !$element->userData->snData ) { |
| 332 | $elementData = $element->userData->snData = new RemexMungerData; |
| 333 | } else { |
| 334 | $elementData = $element->userData->snData; |
| 335 | } |
| 336 | if ( ( $parentData->isPWrapper || $parentData->isSplittable ) |
| 337 | && isset( self::FORMATTING_ELEMENTS[$elementName] ) |
| 338 | ) { |
| 339 | $elementData->isSplittable = true; |
| 340 | } |
| 341 | if ( $parentData->isPWrapper ) { |
| 342 | $elementData->ancestorPNode = $parent; |
| 343 | } elseif ( $parentData->ancestorPNode ) { |
| 344 | $elementData->ancestorPNode = $parentData->ancestorPNode; |
| 345 | } |
| 346 | if ( $parentData->wrapBaseNode ) { |
| 347 | $elementData->wrapBaseNode = $parentData->wrapBaseNode; |
| 348 | } elseif ( $parentData->needsPWrapping ) { |
| 349 | $elementData->wrapBaseNode = $parent; |
| 350 | } |
| 351 | if ( $elementName === 'body' |
| 352 | || $elementName === 'blockquote' |
| 353 | || $elementName === 'html' |
| 354 | ) { |
| 355 | $elementData->needsPWrapping = true; |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * Clone nodes in a stack range and return the new parent |
| 361 | * |
| 362 | * @param SerializerNode $parentNode |
| 363 | * @param bool $inline |
| 364 | * @param int $pos The source position |
| 365 | * @return SerializerNode |
| 366 | */ |
| 367 | private function splitTagStack( SerializerNode $parentNode, $inline, $pos ) { |
| 368 | $parentData = $parentNode->snData; |
| 369 | $wrapBase = $parentData->wrapBaseNode; |
| 370 | $pWrap = $parentData->ancestorPNode; |
| 371 | if ( !$pWrap ) { |
| 372 | $cloneEnd = $wrapBase; |
| 373 | } else { |
| 374 | $cloneEnd = $parentData->ancestorPNode; |
| 375 | } |
| 376 | |
| 377 | $serializer = $this->serializer; |
| 378 | $node = $parentNode; |
| 379 | $root = $serializer->getRootNode(); |
| 380 | $nodes = []; |
| 381 | $removableNodes = []; |
| 382 | while ( $node !== $cloneEnd ) { |
| 383 | $nextParent = $serializer->getParentNode( $node ); |
| 384 | if ( $nextParent === $root ) { |
| 385 | throw new InvalidArgumentException( 'Did not find end of clone range' ); |
| 386 | } |
| 387 | $nodes[] = $node; |
| 388 | if ( $node->snData->nonblankNodeCount === 0 ) { |
| 389 | $removableNodes[] = $node; |
| 390 | $nextParent->snData->nonblankNodeCount--; |
| 391 | } |
| 392 | $node = $nextParent; |
| 393 | } |
| 394 | |
| 395 | if ( $inline ) { |
| 396 | $pWrap = $this->insertPWrapper( $wrapBase, $pos ); |
| 397 | $node = $pWrap; |
| 398 | } else { |
| 399 | if ( $pWrap ) { |
| 400 | // End the p-wrap which was open, cancel the diversion |
| 401 | $wrapBase->snData->childPElement = null; |
| 402 | } |
| 403 | $pWrap = null; |
| 404 | $node = $wrapBase; |
| 405 | } |
| 406 | |
| 407 | for ( $i = count( $nodes ) - 1; $i >= 0; $i-- ) { |
| 408 | $oldNode = $nodes[$i]; |
| 409 | $oldData = $oldNode->snData; |
| 410 | $nodeParent = $node; |
| 411 | $element = new Element( $oldNode->namespace, $oldNode->name, $oldNode->attrs ); |
| 412 | $this->serializer->insertElement( TreeBuilder::UNDER, $nodeParent, |
| 413 | $element, false, $pos, 0 ); |
| 414 | $oldData->currentCloneElement = $element; |
| 415 | |
| 416 | $newNode = $element->userData; |
| 417 | $newData = $newNode->snData = new RemexMungerData; |
| 418 | if ( $pWrap ) { |
| 419 | $newData->ancestorPNode = $pWrap; |
| 420 | } |
| 421 | $newData->isSplittable = true; |
| 422 | $newData->wrapBaseNode = $wrapBase; |
| 423 | $newData->isPWrapper = $oldData->isPWrapper; |
| 424 | |
| 425 | $nodeParent->snData->nonblankNodeCount++; |
| 426 | |
| 427 | $node = $newNode; |
| 428 | } |
| 429 | foreach ( $removableNodes as $rNode ) { |
| 430 | $fakeElement = new Element( $rNode->namespace, $rNode->name, $rNode->attrs ); |
| 431 | $fakeElement->userData = $rNode; |
| 432 | $this->serializer->removeNode( $fakeElement, $pos ); |
| 433 | } |
| 434 | // @phan-suppress-next-line PhanTypeMismatchReturnNullable False positive |
| 435 | return $node; |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Find the ancestor of $node which is a child of a p-wrapper, and |
| 440 | * reparent that node so that it is placed after the end of the p-wrapper |
| 441 | * @param SerializerNode $node |
| 442 | * @param int $sourceStart |
| 443 | */ |
| 444 | private function disablePWrapper( SerializerNode $node, $sourceStart ) { |
| 445 | $nodeData = $node->snData; |
| 446 | $pWrapNode = $nodeData->ancestorPNode; |
| 447 | $newParent = $this->serializer->getParentNode( $pWrapNode ); |
| 448 | if ( $pWrapNode !== $this->serializer->getLastChild( $newParent ) ) { |
| 449 | // Fostering or something? Abort! |
| 450 | return; |
| 451 | } |
| 452 | |
| 453 | $nextParent = $node; |
| 454 | do { |
| 455 | $victim = $nextParent; |
| 456 | $victim->snData->ancestorPNode = null; |
| 457 | $nextParent = $this->serializer->getParentNode( $victim ); |
| 458 | } while ( $nextParent !== $pWrapNode ); |
| 459 | |
| 460 | // Make a fake Element to use in a reparenting operation |
| 461 | $victimElement = new Element( $victim->namespace, $victim->name, $victim->attrs ); |
| 462 | $victimElement->userData = $victim; |
| 463 | |
| 464 | // Reparent |
| 465 | $this->serializer->insertElement( TreeBuilder::UNDER, $newParent, $victimElement, |
| 466 | false, $sourceStart, 0 ); |
| 467 | |
| 468 | // Decrement nonblank node count |
| 469 | $pWrapNode->snData->nonblankNodeCount--; |
| 470 | |
| 471 | // Cancel the diversion so that no more elements are inserted under this p-wrap |
| 472 | $newParent->snData->childPElement = null; |
| 473 | } |
| 474 | |
| 475 | public function endTag( Element $element, $sourceStart, $sourceLength ) { |
| 476 | $data = $element->userData->snData; |
| 477 | if ( $data->childPElement ) { |
| 478 | $this->endTag( $data->childPElement, $sourceStart, 0 ); |
| 479 | } |
| 480 | $this->serializer->endTag( $element, $sourceStart, $sourceLength ); |
| 481 | $element->userData->snData = null; |
| 482 | $element->userData = null; |
| 483 | } |
| 484 | |
| 485 | public function doctype( $name, $public, $system, $quirks, $sourceStart, $sourceLength ) { |
| 486 | $this->serializer->doctype( $name, $public, $system, $quirks, |
| 487 | $sourceStart, $sourceLength ); |
| 488 | } |
| 489 | |
| 490 | public function comment( $preposition, $refElement, $text, $sourceStart, $sourceLength ) { |
| 491 | [ , $refNode ] = $this->getParentForInsert( $preposition, $refElement ); |
| 492 | $this->serializer->comment( $preposition, $refNode, $text, $sourceStart, $sourceLength ); |
| 493 | } |
| 494 | |
| 495 | public function error( $text, $pos ) { |
| 496 | $this->serializer->error( $text, $pos ); |
| 497 | } |
| 498 | |
| 499 | public function mergeAttributes( Element $element, Attributes $attrs, $sourceStart ) { |
| 500 | $this->serializer->mergeAttributes( $element, $attrs, $sourceStart ); |
| 501 | } |
| 502 | |
| 503 | public function removeNode( Element $element, $sourceStart ) { |
| 504 | $this->serializer->removeNode( $element, $sourceStart ); |
| 505 | } |
| 506 | |
| 507 | public function reparentChildren( Element $element, Element $newParent, $sourceStart ) { |
| 508 | $self = $element->userData; |
| 509 | if ( $self->snData->childPElement ) { |
| 510 | // Reparent under the p-wrapper instead, so that e.g. |
| 511 | // <blockquote><mw:p-wrap>...</mw:p-wrap></blockquote> |
| 512 | // becomes |
| 513 | // <blockquote><mw:p-wrap><i>...</i></mw:p-wrap></blockquote> |
| 514 | |
| 515 | // The formatting element should not be the parent of the p-wrap. |
| 516 | // Without this special case, the insertElement() of the <i> below |
| 517 | // would be diverted into the p-wrapper, causing infinite recursion |
| 518 | // (T178632) |
| 519 | $this->reparentChildren( $self->snData->childPElement, $newParent, $sourceStart ); |
| 520 | return; |
| 521 | } |
| 522 | |
| 523 | $children = $self->children; |
| 524 | $self->children = []; |
| 525 | $this->insertElement( TreeBuilder::UNDER, $element, $newParent, false, $sourceStart, 0 ); |
| 526 | $newParentNode = $newParent->userData; |
| 527 | $newParentId = $newParentNode->id; |
| 528 | foreach ( $children as $child ) { |
| 529 | if ( is_object( $child ) ) { |
| 530 | $this->trace( "reparent <{$child->name}>" ); |
| 531 | $child->parentId = $newParentId; |
| 532 | } |
| 533 | } |
| 534 | $newParentNode->children = $children; |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * Helper function to match the Parser::TOC_PLACEHOLDER. |
| 539 | * Note that Parsoid's version of this placeholder might |
| 540 | * include additional attributes. |
| 541 | * @param Element $element |
| 542 | * @return bool If the given element is a Parser::TOC_PLACEHOLDER |
| 543 | */ |
| 544 | private function isTableOfContentsMarker( Element $element ): bool { |
| 545 | // Keep this in sync with Parser::TOC_PLACEHOLDER |
| 546 | return ( |
| 547 | $element->htmlName === 'meta' && |
| 548 | isset( $element->attrs['property'] ) && |
| 549 | $element->attrs['property'] === 'mw:PageProp/toc' |
| 550 | ); |
| 551 | } |
| 552 | } |