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| 1 | <?php |
| 2 | |
| 3 | // @phan-file-suppress PhanTraitParentReference |
| 4 | |
| 5 | namespace MediaWiki\Html; |
| 6 | |
| 7 | use Wikimedia\Assert\Assert; |
| 8 | use Wikimedia\RemexHtml\Serializer\HtmlFormatter; |
| 9 | use Wikimedia\RemexHtml\Serializer\SerializerNode; |
| 10 | |
| 11 | /** |
| 12 | * Internal helper trait for HtmlHelper::modifyHtml. |
| 13 | * |
| 14 | * This is designed to extend a HtmlFormatter. |
| 15 | */ |
| 16 | trait HtmlHelperTrait { |
| 17 | /** @var callable */ |
| 18 | private $shouldModifyCallback; |
| 19 | |
| 20 | /** @var callable */ |
| 21 | private $modifyCallback; |
| 22 | |
| 23 | public function __construct( array $options, callable $shouldModifyCallback, callable $modifyCallback ) { |
| 24 | parent::__construct( $options ); |
| 25 | $this->shouldModifyCallback = $shouldModifyCallback; |
| 26 | $this->modifyCallback = $modifyCallback; |
| 27 | // Escape U+0338 (T387130) |
| 28 | '@phan-var HtmlFormatter $this'; |
| 29 | $this->textEscapes["\u{0338}"] = '̸'; |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param SerializerNode $parent |
| 34 | * @param SerializerNode $node |
| 35 | * @param string|null $contents |
| 36 | * @return string |
| 37 | */ |
| 38 | public function element( SerializerNode $parent, SerializerNode $node, $contents ) { |
| 39 | if ( ( $this->shouldModifyCallback )( $node ) ) { |
| 40 | $node = clone $node; |
| 41 | $node->attrs = clone $node->attrs; |
| 42 | $newNode = ( $this->modifyCallback )( $node ); |
| 43 | Assert::parameterType( [ SerializerNode::class, 'string' ], $newNode, 'return value' ); |
| 44 | if ( is_string( $newNode ) ) { |
| 45 | // Replace this element with an "outerHTML" string. |
| 46 | return $newNode; |
| 47 | } |
| 48 | return parent::element( $parent, $newNode, $contents ); |
| 49 | } else { |
| 50 | return parent::element( $parent, $node, $contents ); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * @param string|null $fragmentNamespace |
| 56 | * @param string|null $fragmentName |
| 57 | * @return string |
| 58 | */ |
| 59 | public function startDocument( $fragmentNamespace, $fragmentName ) { |
| 60 | return ''; |
| 61 | } |
| 62 | } |