mediawiki-extensions-Discus.../includes/ThreadItem.php

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<?php
namespace MediaWiki\Extension\DiscussionTools;
use DOMNode;
use JsonSerializable;
use Wikimedia\Parsoid\Utils\DOMCompat;
/**
* A thread item, either a heading or a comment
*/
abstract class ThreadItem implements JsonSerializable {
protected $type;
protected $range;
protected $rootNode;
protected $level;
protected $parent;
protected $id = null;
protected $legacyId = null;
protected $replies = [];
/**
* @param string $type `heading` or `comment`
* @param int $level Indentation level
* @param ImmutableRange $range Object describing the extent of the comment, including the
* signature and timestamp.
*/
public function __construct(
string $type, int $level, ImmutableRange $range
) {
$this->type = $type;
$this->level = $level;
$this->range = $range;
}
/**
* @return array JSON-serializable array
*/
public function jsonSerialize() : array {
// The output of this method can end up in the HTTP cache (Varnish). Avoid changing it;
// and when doing so, ensure that frontend code can handle both the old and new outputs.
// See ThreadItem.static.newFromJSON in JS.
return [
'type' => $this->type,
'level' => $this->level,
'id' => $this->id,
'replies' => array_map( function ( ThreadItem $comment ) {
return $comment->getId();
}, $this->replies )
];
}
/**
* Get the list of authors in the comment tree below this thread item.
*
* Usually called on a HeadingItem to find all authors in a thread.
*
* @return string[] Author usernames
*/
public function getAuthorsBelow() : array {
$authors = [];
$getAuthorSet = function ( ThreadItem $comment ) use ( &$authors, &$getAuthorSet ) {
if ( $comment instanceof CommentItem ) {
$author = $comment->getAuthor();
if ( $author ) {
$authors[ $author ] = true;
}
}
// Get the set of authors in the same format from each reply
array_map( $getAuthorSet, $comment->getReplies() );
};
array_map( $getAuthorSet, $this->getReplies() );
ksort( $authors );
return array_keys( $authors );
}
/**
* Get the name of the page from which this thread item is transcluded (if any).
*
* @return string|bool `false` if this item is not transcluded. A string if it's transcluded
* from a single page (the page title, in text form with spaces). `true` if it's transcluded, but
* we can't determine the source.
*/
public function getTranscludedFrom() {
// If some template is used within the comment (e.g. {{ping|…}} or {{tl|…}}, or a
// non-substituted signature template), that *does not* mean the comment is transcluded.
// We only want to consider comments to be transcluded if all wrapper elements (usually
// <li> or <p>) are marked as part of a single transclusion.
// If we can't find "exact" wrappers, using only the end container works out well
// (because the main purpose of this method is to decide on which page we should post
// replies to the given comment, and they'll go after the comment).
$coveredNodes = CommentUtils::getFullyCoveredSiblings( $this ) ?:
[ $this->getRange()->endContainer ];
$node = CommentUtils::getTranscludedFromElement( $coveredNodes[ 0 ] );
$length = count( $coveredNodes );
for ( $i = 1; $i < $length; $i++ ) {
if ( $node !== CommentUtils::getTranscludedFromElement( $coveredNodes[ $i ] ) ) {
// Comment is only partially transcluded, that should be fine
return false;
}
}
if ( !$node ) {
// No mw:Transclusion node found, this item is not transcluded
return false;
}
$dataMw = json_decode( $node->getAttribute( 'data-mw' ), true );
// Only return a page name if this is a simple single-template transclusion.
if (
is_array( $dataMw ) &&
$dataMw['parts'] &&
count( $dataMw['parts'] ) === 1 &&
$dataMw['parts'][0]['template'] &&
// 'href' will be unset if this is a parser function rather than a template
isset( $dataMw['parts'][0]['template']['target']['href'] )
) {
$title = CommentUtils::getTitleFromUrl( $dataMw['parts'][0]['template']['target']['href'] );
return $title->getPrefixedText();
}
// Multi-template transclusion, or a parser function call, or template-affected wikitext outside
// of a template call, or a mix of the above
return true;
}
/**
* Get the HTML of this thread item
*
* @return string HTML
*/
public function getHTML() : string {
$fragment = $this->getRange()->cloneContents();
$container = $fragment->ownerDocument->createElement( 'div' );
$container->appendChild( $fragment );
return DOMCompat::getInnerHTML( $container );
}
/**
* Get the text of this thread item
*
* @return string Text
*/
public function getText() : string {
$fragment = $this->getRange()->cloneContents();
return $fragment->textContent;
}
/**
* @return string Thread item type
*/
public function getType() : string {
return $this->type;
}
/**
* @return int Indentation level
*/
public function getLevel() : int {
return $this->level;
}
/**
* @return ThreadItem|null Parent thread item
*/
public function getParent() : ?ThreadItem {
return $this->parent;
}
/**
* @return ImmutableRange Range of the entire thread item
*/
public function getRange() : ImmutableRange {
return $this->range;
}
/**
* @return DOMNode Root node (level is relative to this node)
*/
public function getRootNode() : DOMNode {
return $this->rootNode;
}
/**
* @return string Thread ID
*/
public function getId() : string {
return $this->id;
}
/**
* @return string|null Thread ID, according to an older algorithm
*/
public function getLegacyId() : ?string {
return $this->legacyId;
}
/**
* @return ThreadItem[] Replies to this thread item
*/
public function getReplies() : array {
return $this->replies;
}
/**
* @param int $level Indentation level
*/
public function setLevel( int $level ) : void {
$this->level = $level;
}
/**
* @param ThreadItem $parent Parent thread item
*/
public function setParent( ThreadItem $parent ) {
$this->parent = $parent;
}
/**
* @param ImmutableRange $range Thread item range
*/
public function setRange( ImmutableRange $range ) : void {
$this->range = $range;
}
/**
* @param DOMNode $rootNode Root node (level is relative to this node)
*/
public function setRootNode( DOMNode $rootNode ) : void {
$this->rootNode = $rootNode;
}
/**
* @param string|null $id Thread ID
*/
public function setId( ?string $id ) : void {
$this->id = $id;
}
/**
* @param string|null $id Thread ID
*/
public function setLegacyId( ?string $id ) : void {
$this->legacyId = $id;
}
/**
* @param ThreadItem $reply Reply comment
*/
public function addReply( ThreadItem $reply ) : void {
$this->replies[] = $reply;
}
}