From 8a6326c21114290042bc72bdbf32230632829020 Mon Sep 17 00:00:00 2001
From: Kunal Mehta <legoktm@member.fsf.org>
Date: Wed, 22 Jun 2016 23:30:30 +0200
Subject: [PATCH] Add SpecialPage::getLinkRenderer()

And SpecialPage::setLinkRenderer(), so the Parser can pass on its
LinkRenderer instance for when special pages are being included in a
page.

Change-Id: If9a9c648ab670b824ce534e7cf0d20d41e1bfd12
---
 includes/parser/Parser.php                  |  2 +-
 includes/specialpage/SpecialPage.php        | 29 +++++++++++++++++++--
 includes/specialpage/SpecialPageFactory.php | 16 +++++++++---
 3 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index aca32ed569..65dde2148b 100644
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -3147,7 +3147,7 @@ class Parser {
 						$context->setUser( User::newFromName( '127.0.0.1', false ) );
 					}
 					$context->setLanguage( $this->mOptions->getUserLangObj() );
-					$ret = SpecialPageFactory::capturePath( $title, $context );
+					$ret = SpecialPageFactory::capturePath( $title, $context, $this->getLinkRenderer() );
 					if ( $ret ) {
 						$text = $context->getOutput()->getHTML();
 						$this->mOutput->addOutputPageMetadata( $context->getOutput() );
diff --git a/includes/specialpage/SpecialPage.php b/includes/specialpage/SpecialPage.php
index f478203019..35ecc6e4b6 100644
--- a/includes/specialpage/SpecialPage.php
+++ b/includes/specialpage/SpecialPage.php
@@ -1,6 +1,4 @@
 <?php
-use MediaWiki\MediaWikiServices;
-
 /**
  * Parent class for all special pages.
  *
@@ -24,6 +22,8 @@ use MediaWiki\MediaWikiServices;
  */
 
 use MediaWiki\Auth\AuthManager;
+use MediaWiki\Linker\LinkRenderer;
+use MediaWiki\MediaWikiServices;
 
 /**
  * Parent class for all special pages.
@@ -60,6 +60,11 @@ class SpecialPage {
 	 */
 	protected $mContext;
 
+	/**
+	 * @var LinkRenderer|null
+	 */
+	private $linkRenderer;
+
 	/**
 	 * Get a localised Title object for a specified special page name
 	 *
@@ -826,4 +831,24 @@ class SpecialPage {
 			wfTransactionalTimeLimit();
 		}
 	}
+
+	/**
+	 * @since 1.28
+	 * @return LinkRenderer
+	 */
+	protected function getLinkRenderer() {
+		if ( $this->linkRenderer ) {
+			return $this->linkRenderer;
+		} else {
+			return MediaWikiServices::getInstance()->getLinkRenderer();
+		}
+	}
+
+	/**
+	 * @since 1.28
+	 * @param LinkRenderer $linkRenderer
+	 */
+	public function setLinkRenderer( LinkRenderer $linkRenderer ) {
+		$this->linkRenderer = $linkRenderer;
+	}
 }
diff --git a/includes/specialpage/SpecialPageFactory.php b/includes/specialpage/SpecialPageFactory.php
index 73efa4e894..b69b28afb4 100644
--- a/includes/specialpage/SpecialPageFactory.php
+++ b/includes/specialpage/SpecialPageFactory.php
@@ -21,6 +21,7 @@
  * @ingroup SpecialPage
  * @defgroup SpecialPage SpecialPage
  */
+use MediaWiki\Linker\LinkRenderer;
 
 /**
  * Factory for handling the special page list and generating SpecialPage objects.
@@ -523,10 +524,13 @@ class SpecialPageFactory {
 	 * @param Title $title
 	 * @param IContextSource $context
 	 * @param bool $including Bool output is being captured for use in {{special:whatever}}
+	 * @param LinkRenderer|null $linkRenderer (since 1.28)
 	 *
 	 * @return bool
 	 */
-	public static function executePath( Title &$title, IContextSource &$context, $including = false ) {
+	public static function executePath( Title &$title, IContextSource &$context, $including = false,
+		LinkRenderer $linkRenderer = null
+	) {
 		// @todo FIXME: Redirects broken due to this call
 		$bits = explode( '/', $title->getDBkey(), 2 );
 		$name = $bits[0];
@@ -586,6 +590,9 @@ class SpecialPageFactory {
 		}
 
 		$page->including( $including );
+		if ( $linkRenderer ) {
+			$page->setLinkRenderer( $linkRenderer );
+		}
 
 		// Execute special page
 		$page->run( $par );
@@ -605,9 +612,12 @@ class SpecialPageFactory {
 	 *
 	 * @param Title $title
 	 * @param IContextSource $context
+	 * @param LinkRenderer|null $linkRenderer (since 1.28)
 	 * @return string HTML fragment
 	 */
-	public static function capturePath( Title $title, IContextSource $context ) {
+	public static function capturePath(
+		Title $title, IContextSource $context, LinkRenderer $linkRenderer = null
+	) {
 		global $wgTitle, $wgOut, $wgRequest, $wgUser, $wgLang;
 		$main = RequestContext::getMain();
 
@@ -640,7 +650,7 @@ class SpecialPageFactory {
 		$main->setLanguage( $context->getLanguage() );
 
 		// The useful part
-		$ret = self::executePath( $title, $context, true );
+		$ret = self::executePath( $title, $context, true, $linkRenderer );
 
 		// Restore old globals and context
 		$wgTitle = $glob['title'];
-- 
2.20.1