2019-05-25 22:24:47 +00:00
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<?php
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declare( strict_types = 1 );
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2019-04-02 22:06:21 +00:00
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2019-05-25 22:24:47 +00:00
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namespace Parsoid\Ext\Cite;
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use DOMDocument;
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use DOMElement;
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use DOMNode;
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use Exception;
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use Parsoid\Config\ParsoidExtensionAPI;
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use Parsoid\Ext\ExtensionTag;
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use Parsoid\Html2Wt\SerializerState;
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use Parsoid\Utils\ContentUtils;
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use Parsoid\Utils\DOMCompat;
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use Parsoid\Utils\DOMDataUtils;
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use Parsoid\Utils\DOMUtils;
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use Parsoid\Utils\WTUtils;
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2019-04-02 22:06:21 +00:00
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/**
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* Simple token transform version of the Ref extension tag.
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*/
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2019-07-11 17:22:29 +00:00
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class Ref extends ExtensionTag {
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2019-05-25 22:24:47 +00:00
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/** @inheritDoc */
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public function toDOM( ParsoidExtensionAPI $extApi, string $txt, array $extExtArgs ): DOMDocument {
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2019-04-02 22:06:21 +00:00
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// Drop nested refs entirely, unless we've explicitly allowed them
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2019-05-25 22:24:47 +00:00
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if ( ( $extApi->parseContext['extTag'] ?? null ) === 'ref' &&
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empty( $extApi->parseContext['extTagOpts']['allowNestedRef'] )
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2019-04-02 22:06:21 +00:00
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) {
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return null;
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}
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// The one supported case for nested refs is from the {{#tag:ref}} parser
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// function. However, we're overly permissive here since we can't
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// distinguish when that's nested in another template.
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// The php preprocessor did our expansion.
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2019-05-25 22:24:47 +00:00
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$allowNestedRef = !empty( $extApi->parseContext['inTemplate'] ) &&
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( $extApi->parseContext['extTag'] ?? null ) !== 'ref';
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2019-04-02 22:06:21 +00:00
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2019-05-25 22:24:47 +00:00
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return $extApi->parseTokenContentsToDOM(
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$extExtArgs,
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'',
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$txt,
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[
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2019-04-02 22:06:21 +00:00
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// NOTE: sup's content model requires it only contain phrasing
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// content, not flow content. However, since we are building an
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// in-memory DOM which is simply a tree data structure, we can
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// nest flow content in a <sup> tag.
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'wrapperTag' => 'sup',
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2019-04-19 19:38:27 +00:00
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'pipelineOpts' => [
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'extTag' => 'ref',
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'extTagOpts' => [ 'allowNestedRef' => $allowNestedRef ],
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'inTemplate' => $extApi->parseContext['inTemplate'] ?? null,
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// FIXME: One-off PHP parser state leak.
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// This needs a better solution.
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'inPHPBlock' => true,
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],
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2019-04-02 22:06:21 +00:00
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]
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);
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}
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2019-05-25 22:24:47 +00:00
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/** @inheritDoc */
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public function lintHandler(
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ParsoidExtensionAPI $extApi, DOMElement $ref, callable $defaultHandler
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): ?DOMNode {
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2019-04-02 22:06:21 +00:00
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// Don't lint the content of ref in ref, since it can lead to cycles
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// using named refs
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2019-05-25 22:24:47 +00:00
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if ( WTUtils::fromExtensionContent( $ref, 'references' ) ) {
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return $ref->nextSibling;
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}
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2019-04-02 22:06:21 +00:00
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2019-05-25 22:24:47 +00:00
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$refFirstChild = $ref->firstChild;
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DOMUtils::assertElt( $refFirstChild );
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$linkBackId = preg_replace( '/[^#]*#/', '', $refFirstChild->getAttribute( 'href' ), 1 );
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2019-04-02 22:06:21 +00:00
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$refNode = $ref->ownerDocument->getElementById( $linkBackId );
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if ( $refNode ) {
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// Ex: Buggy input wikitext without ref content
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2019-05-25 22:24:47 +00:00
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$defaultHandler( $refNode->lastChild );
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2019-04-02 22:06:21 +00:00
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}
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2019-06-05 20:09:31 +00:00
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return $ref->nextSibling;
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2019-04-02 22:06:21 +00:00
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}
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2019-05-25 22:24:47 +00:00
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/** @inheritDoc */
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public function fromHTML(
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DOMElement $node, SerializerState $state, bool $wrapperUnmodified
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): string {
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$startTagSrc = $state->serializer->serializeExtensionStartTag( $node, $state );
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2019-04-02 22:06:21 +00:00
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$dataMw = DOMDataUtils::getDataMw( $node );
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2019-05-25 22:24:47 +00:00
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$env = $state->getEnv();
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2019-04-02 22:06:21 +00:00
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$html = null;
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2019-06-24 18:10:35 +00:00
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if ( !isset( $dataMw->body ) ) {
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2019-04-02 22:06:21 +00:00
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return $startTagSrc; // We self-closed this already.
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} else { // We self-closed this already.
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2019-05-25 22:24:47 +00:00
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if ( is_string( $dataMw->body->html ?? null ) ) {
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// First look for the extension's content in data-mw.body.html
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$html = $dataMw->body->html;
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} elseif ( is_string( $dataMw->body->id ?? null ) ) {
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// If the body isn't contained in data-mw.body.html, look if
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// there's an element pointed to by body.id.
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$bodyElt = DOMCompat::getElementById( $node->ownerDocument, $dataMw->body->id );
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$editedDoc = $env->getPageConfig()->editedDoc ?? null;
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if ( !$bodyElt && $editedDoc ) {
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// Try to get to it from the main page.
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// This can happen when the <ref> is inside another
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// extension, most commonly inside a <references>.
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// The recursive call to serializeDOM puts us inside
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// inside a new document.
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$bodyElt = DOMCompat::getElementById( $editedDoc, $dataMw->body->id );
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}
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if ( $bodyElt ) {
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// n.b. this is going to drop any diff markers but since
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// the dom differ doesn't traverse into extension content
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// none should exist anyways.
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DOMDataUtils::visitAndStoreDataAttribs( $bodyElt );
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$html = ContentUtils::toXML( $bodyElt, [ 'innerXML' => true ] );
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DOMDataUtils::visitAndLoadDataAttribs( $bodyElt );
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} else {
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// Some extra debugging for VisualEditor
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$extraDebug = '';
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$firstA = DOMCompat::querySelector( $node, 'a[href]' );
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$href = $firstA->getAttribute( 'href' );
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if ( $firstA && preg_match( '/^#/', $href ) ) {
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try {
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$ref = DOMCompat::querySelector( $node->ownerDocument, $href );
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if ( $ref ) {
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$extraDebug .= ' [own doc: ' . DOMCompat::getOuterHTML( $ref ) . ']';
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}
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$ref = DOMCompat::querySelector( $env->getPageConfig()->editedDoc, $href );
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if ( $ref ) {
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$extraDebug .= ' [main doc: ' . DOMCompat::getOuterHTML( $ref ) . ']';
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}
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} catch ( Exception $e ) {
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2019-06-24 18:10:35 +00:00
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// We are just providing VE with debugging info.
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// So, ignore all exceptions / errors in this code.
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}
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2019-05-25 22:24:47 +00:00
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if ( !$extraDebug ) {
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$extraDebug = ' [reference ' . $href . ' not found]';
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2019-04-02 22:06:21 +00:00
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}
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}
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2019-05-25 22:24:47 +00:00
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$env->log(
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'error/' . $dataMw->name,
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'extension src id ' . $dataMw->body->id . ' points to non-existent element for:',
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DOMCompat::getOuterHTML( $node ),
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'. More debug info: ',
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$extraDebug
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);
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return ''; // Drop it!
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2019-04-02 22:06:21 +00:00
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}
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2019-05-25 22:24:47 +00:00
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} else { // Drop it!
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$env->log( 'error', 'Ref body unavailable for: ' . DOMCompat::getOuterHTML( $node ) );
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2019-04-02 22:06:21 +00:00
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return ''; // Drop it!
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2019-05-25 22:24:47 +00:00
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} // Drop it!
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2019-04-02 22:06:21 +00:00
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}
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2019-05-25 22:24:47 +00:00
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$src = $state->serializer->serializeHTML(
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[
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'env' => $state->getEnv(),
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'extName' => $dataMw->name, // FIXME: One-off PHP parser state leak.
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2019-04-02 22:06:21 +00:00
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// This needs a better solution.
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'inPHPBlock' => true
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2019-05-25 22:24:47 +00:00
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],
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$html
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2019-04-02 22:06:21 +00:00
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);
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2019-05-25 22:24:47 +00:00
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return $startTagSrc . $src . '</' . $dataMw->name . '>';
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2019-04-02 22:06:21 +00:00
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}
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2019-05-25 22:24:47 +00:00
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/** @inheritDoc */
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public function before( DOMElement $node, DOMNode $otherNode, SerializerState $state ): ?array {
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return null;
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}
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}
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