From 761b880e9815b7e0264e990613819d9758cfd14c Mon Sep 17 00:00:00 2001
From: aude <aude.wiki@gmail.com>
Date: Thu, 17 Oct 2013 00:51:49 +0000
Subject: [PATCH] Split changes list classes into separate files

Having them separate improves readability of the code
and makes it easier to work with this code.

Change-Id: Ic6aaf1ace3640f66ad41c2d85b4f7d740b259e0c
---
 includes/AutoLoader.php                       |  12 +-
 includes/changes/ChangesList.php              | 552 ++++++++++++++
 .../EnhancedChangesList.php}                  | 674 +-----------------
 includes/changes/OldChangesList.php           | 130 ++++
 includes/changes/RCCacheEntry.php             |  35 +
 includes/{ => changes}/RecentChange.php       |   0
 6 files changed, 725 insertions(+), 678 deletions(-)
 create mode 100644 includes/changes/ChangesList.php
 rename includes/{ChangesList.php => changes/EnhancedChangesList.php} (51%)
 create mode 100644 includes/changes/OldChangesList.php
 create mode 100644 includes/changes/RCCacheEntry.php
 rename includes/{ => changes}/RecentChange.php (100%)

diff --git a/includes/AutoLoader.php b/includes/AutoLoader.php
index 8d571ad023..8a5032673f 100644
--- a/includes/AutoLoader.php
+++ b/includes/AutoLoader.php
@@ -55,7 +55,6 @@ $wgAutoloadLocalClasses = array(
 	'CdbWriter_DBA' => 'includes/Cdb.php',
 	'CdbWriter_PHP' => 'includes/Cdb_PHP.php',
 	'ChangesFeed' => 'includes/ChangesFeed.php',
-	'ChangesList' => 'includes/ChangesList.php',
 	'ChangeTags' => 'includes/ChangeTags.php',
 	'ChannelFeed' => 'includes/Feed.php',
 	'Collation' => 'includes/Collation.php',
@@ -87,7 +86,6 @@ $wgAutoloadLocalClasses = array(
 	'DumpPipeOutput' => 'includes/Export.php',
 	'EditPage' => 'includes/EditPage.php',
 	'EmailNotification' => 'includes/UserMailer.php',
-	'EnhancedChangesList' => 'includes/ChangesList.php',
 	'ErrorPageError' => 'includes/Exception.php',
 	'ExplodeIterator' => 'includes/StringUtils.php',
 	'FakeTitle' => 'includes/FakeTitle.php',
@@ -178,7 +176,6 @@ $wgAutoloadLocalClasses = array(
 	'MWHttpRequest' => 'includes/HttpFunctions.php',
 	'MWInit' => 'includes/Init.php',
 	'MWNamespace' => 'includes/Namespace.php',
-	'OldChangesList' => 'includes/ChangesList.php',
 	'OutputPage' => 'includes/OutputPage.php',
 	'Page' => 'includes/WikiPage.php',
 	'PageQueryPage' => 'includes/PageQueryPage.php',
@@ -200,10 +197,8 @@ $wgAutoloadLocalClasses = array(
 	'QueryPage' => 'includes/QueryPage.php',
 	'QuickTemplate' => 'includes/SkinTemplate.php',
 	'RawMessage' => 'includes/Message.php',
-	'RCCacheEntry' => 'includes/ChangesList.php',
 	'RdfMetaData' => 'includes/Metadata.php',
 	'ReadOnlyError' => 'includes/Exception.php',
-	'RecentChange' => 'includes/RecentChange.php',
 	'RedirectSpecialArticle' => 'includes/SpecialPage.php',
 	'RedirectSpecialPage' => 'includes/SpecialPage.php',
 	'RegexlikeReplacer' => 'includes/StringUtils.php',
@@ -457,6 +452,13 @@ $wgAutoloadLocalClasses = array(
 	'TitleDependency' => 'includes/cache/CacheDependency.php',
 	'TitleListDependency' => 'includes/cache/CacheDependency.php',
 
+	# includes/changes
+	'ChangesList' => 'includes/changes/ChangesList.php',
+	'EnhancedChangesList' => 'includes/changes/EnhancedChangesList.php',
+	'OldChangesList' => 'includes/changes/OldChangesList.php',
+	'RCCacheEntry' => 'includes/changes/RCCacheEntry.php',
+	'RecentChange' => 'includes/changes/RecentChange.php',
+
 	# includes/clientpool
 	'RedisConnectionPool' => 'includes/clientpool/RedisConnectionPool.php',
 	'RedisConnRef' => 'includes/clientpool/RedisConnectionPool.php',
diff --git a/includes/changes/ChangesList.php b/includes/changes/ChangesList.php
new file mode 100644
index 0000000000..bf800c4645
--- /dev/null
+++ b/includes/changes/ChangesList.php
@@ -0,0 +1,552 @@
+<?php
+/**
+ * Base class for all changes lists.
+ *
+ * The class is used for formatting recent changes, related changes and watchlist.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+class ChangesList extends ContextSource {
+
+	/**
+	 * @var Skin
+	 */
+	public $skin;
+
+	protected $watchlist = false;
+
+	protected $message;
+
+	/**
+	 * Changeslist constructor
+	 *
+	 * @param $obj Skin or IContextSource
+	 */
+	public function __construct( $obj ) {
+		if ( $obj instanceof IContextSource ) {
+			$this->setContext( $obj );
+			$this->skin = $obj->getSkin();
+		} else {
+			$this->setContext( $obj->getContext() );
+			$this->skin = $obj;
+		}
+		$this->preCacheMessages();
+	}
+
+	/**
+	 * Fetch an appropriate changes list class for the main context
+	 * This first argument used to be an User object.
+	 *
+	 * @deprecated in 1.18; use newFromContext() instead
+	 * @param string|User $unused Unused
+	 * @return ChangesList|EnhancedChangesList|OldChangesList derivative
+	 */
+	public static function newFromUser( $unused ) {
+		wfDeprecated( __METHOD__, '1.18' );
+		return self::newFromContext( RequestContext::getMain() );
+	}
+
+	/**
+	 * Fetch an appropriate changes list class for the specified context
+	 * Some users might want to use an enhanced list format, for instance
+	 *
+	 * @param $context IContextSource to use
+	 * @return ChangesList|EnhancedChangesList|OldChangesList derivative
+	 */
+	public static function newFromContext( IContextSource $context ) {
+		$user = $context->getUser();
+		$sk = $context->getSkin();
+		$list = null;
+		if ( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
+			$new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
+			return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
+		} else {
+			return $list;
+		}
+	}
+
+	/**
+	 * Sets the list to use a "<li class='watchlist-(namespace)-(page)'>" tag
+	 * @param $value Boolean
+	 */
+	public function setWatchlistDivs( $value = true ) {
+		$this->watchlist = $value;
+	}
+
+	/**
+	 * As we use the same small set of messages in various methods and that
+	 * they are called often, we call them once and save them in $this->message
+	 */
+	private function preCacheMessages() {
+		if ( !isset( $this->message ) ) {
+			foreach ( array(
+				'cur', 'diff', 'hist', 'enhancedrc-history', 'last', 'blocklink', 'history',
+				'semicolon-separator', 'pipe-separator' ) as $msg
+			) {
+				$this->message[$msg] = $this->msg( $msg )->escaped();
+			}
+		}
+	}
+
+	/**
+	 * Returns the appropriate flags for new page, minor change and patrolling
+	 * @param array $flags Associative array of 'flag' => Bool
+	 * @param string $nothing to use for empty space
+	 * @return String
+	 */
+	public function recentChangesFlags( $flags, $nothing = '&#160;' ) {
+		global $wgRecentChangesFlags;
+		$f = '';
+		foreach ( array_keys( $wgRecentChangesFlags ) as $flag ) {
+			$f .= isset( $flags[$flag] ) && $flags[$flag]
+				? self::flag( $flag )
+				: $nothing;
+		}
+		return $f;
+	}
+
+	/**
+	 * Provide the "<abbr>" element appropriate to a given abbreviated flag,
+	 * namely the flag indicating a new page, a minor edit, a bot edit, or an
+	 * unpatrolled edit.  By default in English it will contain "N", "m", "b",
+	 * "!" respectively, plus it will have an appropriate title and class.
+	 *
+	 * @param string $flag One key of $wgRecentChangesFlags
+	 * @return String: Raw HTML
+	 */
+	public static function flag( $flag ) {
+		static $flagInfos = null;
+		if ( is_null( $flagInfos ) ) {
+			global $wgRecentChangesFlags;
+			$flagInfos = array();
+			foreach ( $wgRecentChangesFlags as $key => $value ) {
+				$flagInfos[$key]['letter'] = wfMessage( $value['letter'] )->escaped();
+				$flagInfos[$key]['title'] = wfMessage( $value['title'] )->escaped();
+				// Allow customized class name, fall back to flag name
+				$flagInfos[$key]['class'] = Sanitizer::escapeClass(
+					isset( $value['class'] ) ? $value['class'] : $key );
+			}
+		}
+
+		// Inconsistent naming, bleh, kepted for b/c
+		$map = array(
+			'minoredit' => 'minor',
+			'botedit' => 'bot',
+		);
+		if ( isset( $map[$flag] ) ) {
+			$flag = $map[$flag];
+		}
+
+		return "<abbr class='" . $flagInfos[$flag]['class'] . "' title='" . $flagInfos[$flag]['title'] . "'>" .
+			$flagInfos[$flag]['letter'] .
+			'</abbr>';
+	}
+
+	/**
+	 * Returns text for the start of the tabular part of RC
+	 * @return String
+	 */
+	public function beginRecentChangesList() {
+		$this->rc_cache = array();
+		$this->rcMoveIndex = 0;
+		$this->rcCacheIndex = 0;
+		$this->lastdate = '';
+		$this->rclistOpen = false;
+		$this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
+		return '';
+	}
+
+	/**
+	 * Show formatted char difference
+	 * @param $old Integer: bytes
+	 * @param $new Integer: bytes
+	 * @param $context IContextSource context to use
+	 * @return String
+	 */
+	public static function showCharacterDifference( $old, $new, IContextSource $context = null ) {
+		global $wgRCChangedSizeThreshold, $wgMiserMode;
+
+		if ( !$context ) {
+			$context = RequestContext::getMain();
+		}
+
+		$new = (int)$new;
+		$old = (int)$old;
+		$szdiff = $new - $old;
+
+		$lang = $context->getLanguage();
+		$code = $lang->getCode();
+		static $fastCharDiff = array();
+		if ( !isset( $fastCharDiff[$code] ) ) {
+			$fastCharDiff[$code] = $wgMiserMode || $context->msg( 'rc-change-size' )->plain() === '$1';
+		}
+
+		$formattedSize = $lang->formatNum( $szdiff );
+
+		if ( !$fastCharDiff[$code] ) {
+			$formattedSize = $context->msg( 'rc-change-size', $formattedSize )->text();
+		}
+
+		if ( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
+			$tag = 'strong';
+		} else {
+			$tag = 'span';
+		}
+
+		if ( $szdiff === 0 ) {
+			$formattedSizeClass = 'mw-plusminus-null';
+		}
+		if ( $szdiff > 0 ) {
+			$formattedSize = '+' . $formattedSize;
+			$formattedSizeClass = 'mw-plusminus-pos';
+		}
+		if ( $szdiff < 0 ) {
+			$formattedSizeClass = 'mw-plusminus-neg';
+		}
+
+		$formattedTotalSize = $context->msg( 'rc-change-size-new' )->numParams( $new )->text();
+
+		return Html::element( $tag,
+			array( 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ),
+			$context->msg( 'parentheses', $formattedSize )->plain() ) . $lang->getDirMark();
+	}
+
+	/**
+	 * Format the character difference of one or several changes.
+	 *
+	 * @param $old RecentChange
+	 * @param $new RecentChange last change to use, if not provided, $old will be used
+	 * @return string HTML fragment
+	 */
+	public function formatCharacterDifference( RecentChange $old, RecentChange $new = null ) {
+		$oldlen = $old->mAttribs['rc_old_len'];
+
+		if ( $new ) {
+			$newlen = $new->mAttribs['rc_new_len'];
+		} else {
+			$newlen = $old->mAttribs['rc_new_len'];
+		}
+
+		if ( $oldlen === null || $newlen === null ) {
+			return '';
+		}
+
+		return self::showCharacterDifference( $oldlen, $newlen, $this->getContext() );
+	}
+
+	/**
+	 * Returns text for the end of RC
+	 * @return String
+	 */
+	public function endRecentChangesList() {
+		if ( $this->rclistOpen ) {
+			return "</ul>\n";
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * @param string $s HTML to update
+	 * @param $rc_timestamp mixed
+	 */
+	public function insertDateHeader( &$s, $rc_timestamp ) {
+		# Make date header if necessary
+		$date = $this->getLanguage()->userDate( $rc_timestamp, $this->getUser() );
+		if ( $date != $this->lastdate ) {
+			if ( $this->lastdate != '' ) {
+				$s .= "</ul>\n";
+			}
+			$s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
+			$this->lastdate = $date;
+			$this->rclistOpen = true;
+		}
+	}
+
+	/**
+	 * @param string $s HTML to update
+	 * @param $title Title
+	 * @param $logtype string
+	 */
+	public function insertLog( &$s, $title, $logtype ) {
+		$page = new LogPage( $logtype );
+		$logname = $page->getName()->escaped();
+		$s .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $title, $logname ) )->escaped();
+	}
+
+	/**
+	 * @param string $s HTML to update
+	 * @param $rc RecentChange
+	 * @param $unpatrolled
+	 */
+	public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
+		# Diff link
+		if ( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
+			$diffLink = $this->message['diff'];
+		} elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
+			$diffLink = $this->message['diff'];
+		} else {
+			$query = array(
+				'curid' => $rc->mAttribs['rc_cur_id'],
+				'diff' => $rc->mAttribs['rc_this_oldid'],
+				'oldid' => $rc->mAttribs['rc_last_oldid']
+			);
+
+			$diffLink = Linker::linkKnown(
+				$rc->getTitle(),
+				$this->message['diff'],
+				array( 'tabindex' => $rc->counter ),
+				$query
+			);
+		}
+		$diffhist = $diffLink . $this->message['pipe-separator'];
+		# History link
+		$diffhist .= Linker::linkKnown(
+			$rc->getTitle(),
+			$this->message['hist'],
+			array(),
+			array(
+				'curid' => $rc->mAttribs['rc_cur_id'],
+				'action' => 'history'
+			)
+		);
+		$s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() . ' <span class="mw-changeslist-separator">. .</span> ';
+	}
+
+	/**
+	 * @param string $s HTML to update
+	 * @param $rc RecentChange
+	 * @param $unpatrolled
+	 * @param $watched
+	 */
+	public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
+		$params = array();
+
+		$articlelink = Linker::linkKnown(
+			$rc->getTitle(),
+			null,
+			array( 'class' => 'mw-changeslist-title' ),
+			$params
+		);
+		if ( $this->isDeleted( $rc, Revision::DELETED_TEXT ) ) {
+			$articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
+		}
+		# To allow for boldening pages watched by this user
+		$articlelink = "<span class=\"mw-title\">{$articlelink}</span>";
+		# RTL/LTR marker
+		$articlelink .= $this->getLanguage()->getDirMark();
+
+		wfRunHooks( 'ChangesListInsertArticleLink',
+			array( &$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched ) );
+
+		$s .= " $articlelink";
+	}
+
+	/**
+	 * Get the timestamp from $rc formatted with current user's settings
+	 * and a separator
+	 *
+	 * @param $rc RecentChange
+	 * @return string HTML fragment
+	 */
+	public function getTimestamp( $rc ) {
+		return $this->message['semicolon-separator'] . '<span class="mw-changeslist-date">' .
+			$this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() ) . '</span> <span class="mw-changeslist-separator">. .</span> ';
+	}
+
+	/**
+	 * Insert time timestamp string from $rc into $s
+	 *
+	 * @param string $s HTML to update
+	 * @param $rc RecentChange
+	 */
+	public function insertTimestamp( &$s, $rc ) {
+		$s .= $this->getTimestamp( $rc );
+	}
+
+	/**
+	 * Insert links to user page, user talk page and eventually a blocking link
+	 *
+	 * @param &$s String HTML to update
+	 * @param &$rc RecentChange
+	 */
+	public function insertUserRelatedLinks( &$s, &$rc ) {
+		if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
+			$s .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
+		} else {
+			$s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
+				$rc->mAttribs['rc_user_text'] );
+			$s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
+		}
+	}
+
+	/**
+	 * Insert a formatted action
+	 *
+	 * @param $rc RecentChange
+	 * @return string
+	 */
+	public function insertLogEntry( $rc ) {
+		$formatter = LogFormatter::newFromRow( $rc->mAttribs );
+		$formatter->setContext( $this->getContext() );
+		$formatter->setShowUserToolLinks( true );
+		$mark = $this->getLanguage()->getDirMark();
+		return $formatter->getActionText() . " $mark" . $formatter->getComment();
+	}
+
+	/**
+	 * Insert a formatted comment
+	 * @param $rc RecentChange
+	 * @return string
+	 */
+	public function insertComment( $rc ) {
+		if ( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
+			if ( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
+				return ' <span class="history-deleted">' . $this->msg( 'rev-deleted-comment' )->escaped() . '</span>';
+			} else {
+				return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
+			}
+		}
+		return '';
+	}
+
+	/**
+	 * Check whether to enable recent changes patrol features
+	 *
+	 * @deprecated since 1.22
+	 * @return Boolean
+	 */
+	public static function usePatrol() {
+		global $wgUser;
+
+		wfDeprecated( __METHOD__, '1.22' );
+
+		return $wgUser->useRCPatrol();
+	}
+
+	/**
+	 * Returns the string which indicates the number of watching users
+	 * @return string
+	 */
+	protected function numberofWatchingusers( $count ) {
+		static $cache = array();
+		if ( $count > 0 ) {
+			if ( !isset( $cache[$count] ) ) {
+				$cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
+			}
+			return $cache[$count];
+		} else {
+			return '';
+		}
+	}
+
+	/**
+	 * Determine if said field of a revision is hidden
+	 * @param $rc RCCacheEntry
+	 * @param $field Integer: one of DELETED_* bitfield constants
+	 * @return Boolean
+	 */
+	public static function isDeleted( $rc, $field ) {
+		return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
+	}
+
+	/**
+	 * Determine if the current user is allowed to view a particular
+	 * field of this revision, if it's marked as deleted.
+	 * @param $rc RCCacheEntry
+	 * @param $field Integer
+	 * @param $user User object to check, or null to use $wgUser
+	 * @return Boolean
+	 */
+	public static function userCan( $rc, $field, User $user = null ) {
+		if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
+			return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
+		} else {
+			return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
+		}
+	}
+
+	/**
+	 * @param $link string
+	 * @param $watched bool
+	 * @return string
+	 */
+	protected function maybeWatchedLink( $link, $watched = false ) {
+		if ( $watched ) {
+			return '<strong class="mw-watched">' . $link . '</strong>';
+		} else {
+			return '<span class="mw-rc-unwatched">' . $link . '</span>';
+		}
+	}
+
+	/** Inserts a rollback link
+	 *
+	 * @param $s string
+	 * @param $rc RecentChange
+	 */
+	public function insertRollback( &$s, &$rc ) {
+		if ( $rc->mAttribs['rc_type'] == RC_EDIT && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
+			$page = $rc->getTitle();
+			/** Check for rollback and edit permissions, disallow special pages, and only
+			  * show a link on the top-most revision */
+			if ( $this->getUser()->isAllowed( 'rollback' ) && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
+			{
+				$rev = new Revision( array(
+					'title' => $page,
+					'id' => $rc->mAttribs['rc_this_oldid'],
+					'user' => $rc->mAttribs['rc_user'],
+					'user_text' => $rc->mAttribs['rc_user_text'],
+					'deleted' => $rc->mAttribs['rc_deleted']
+				) );
+				$s .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
+			}
+		}
+	}
+
+	/**
+	 * @param $s string
+	 * @param $rc RecentChange
+	 * @param $classes
+	 */
+	public function insertTags( &$s, &$rc, &$classes ) {
+		if ( empty( $rc->mAttribs['ts_tags'] ) ) {
+			return;
+		}
+
+		list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
+		$classes = array_merge( $classes, $newClasses );
+		$s .= ' ' . $tagSummary;
+	}
+
+	public function insertExtra( &$s, &$rc, &$classes ) {
+		// Empty, used for subclasses to add anything special.
+	}
+
+	protected function showAsUnpatrolled( RecentChange $rc ) {
+		$unpatrolled = false;
+		if ( !$rc->mAttribs['rc_patrolled'] ) {
+			if ( $this->getUser()->useRCPatrol() ) {
+				$unpatrolled = true;
+			} elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
+				$unpatrolled = true;
+			}
+		}
+		return $unpatrolled;
+	}
+}
diff --git a/includes/ChangesList.php b/includes/changes/EnhancedChangesList.php
similarity index 51%
rename from includes/ChangesList.php
rename to includes/changes/EnhancedChangesList.php
index 9c441afaaf..433adb375c 100644
--- a/includes/ChangesList.php
+++ b/includes/changes/EnhancedChangesList.php
@@ -1,11 +1,6 @@
 <?php
 /**
- * Classes to show lists of changes.
- *
- * These can be:
- * - watchlist
- * - related changes
- * - recent changes
+ * Generates a list of changes using an Enhanced system (uses javascript).
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,673 +20,6 @@
  * @file
  */
 
-/**
- * @todo document
- */
-class RCCacheEntry extends RecentChange {
-	var $secureName, $link;
-	var $curlink, $difflink, $lastlink, $usertalklink, $versionlink;
-	var $userlink, $timestamp, $watched;
-
-	/**
-	 * @param $rc RecentChange
-	 * @return RCCacheEntry
-	 */
-	static function newFromParent( $rc ) {
-		$rc2 = new RCCacheEntry;
-		$rc2->mAttribs = $rc->mAttribs;
-		$rc2->mExtra = $rc->mExtra;
-		return $rc2;
-	}
-}
-
-/**
- * Base class for all changes lists
- */
-class ChangesList extends ContextSource {
-
-	/**
-	 * @var Skin
-	 */
-	public $skin;
-
-	protected $watchlist = false;
-
-	protected $message;
-
-	/**
-	 * Changeslist constructor
-	 *
-	 * @param $obj Skin or IContextSource
-	 */
-	public function __construct( $obj ) {
-		if ( $obj instanceof IContextSource ) {
-			$this->setContext( $obj );
-			$this->skin = $obj->getSkin();
-		} else {
-			$this->setContext( $obj->getContext() );
-			$this->skin = $obj;
-		}
-		$this->preCacheMessages();
-	}
-
-	/**
-	 * Fetch an appropriate changes list class for the main context
-	 * This first argument used to be an User object.
-	 *
-	 * @deprecated in 1.18; use newFromContext() instead
-	 * @param string|User $unused Unused
-	 * @return ChangesList|EnhancedChangesList|OldChangesList derivative
-	 */
-	public static function newFromUser( $unused ) {
-		wfDeprecated( __METHOD__, '1.18' );
-		return self::newFromContext( RequestContext::getMain() );
-	}
-
-	/**
-	 * Fetch an appropriate changes list class for the specified context
-	 * Some users might want to use an enhanced list format, for instance
-	 *
-	 * @param $context IContextSource to use
-	 * @return ChangesList|EnhancedChangesList|OldChangesList derivative
-	 */
-	public static function newFromContext( IContextSource $context ) {
-		$user = $context->getUser();
-		$sk = $context->getSkin();
-		$list = null;
-		if ( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
-			$new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
-			return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
-		} else {
-			return $list;
-		}
-	}
-
-	/**
-	 * Sets the list to use a "<li class='watchlist-(namespace)-(page)'>" tag
-	 * @param $value Boolean
-	 */
-	public function setWatchlistDivs( $value = true ) {
-		$this->watchlist = $value;
-	}
-
-	/**
-	 * As we use the same small set of messages in various methods and that
-	 * they are called often, we call them once and save them in $this->message
-	 */
-	private function preCacheMessages() {
-		if ( !isset( $this->message ) ) {
-			foreach ( array(
-				'cur', 'diff', 'hist', 'enhancedrc-history', 'last', 'blocklink', 'history',
-				'semicolon-separator', 'pipe-separator' ) as $msg
-			) {
-				$this->message[$msg] = $this->msg( $msg )->escaped();
-			}
-		}
-	}
-
-	/**
-	 * Returns the appropriate flags for new page, minor change and patrolling
-	 * @param array $flags Associative array of 'flag' => Bool
-	 * @param string $nothing to use for empty space
-	 * @return String
-	 */
-	public function recentChangesFlags( $flags, $nothing = '&#160;' ) {
-		global $wgRecentChangesFlags;
-		$f = '';
-		foreach ( array_keys( $wgRecentChangesFlags ) as $flag ) {
-			$f .= isset( $flags[$flag] ) && $flags[$flag]
-				? self::flag( $flag )
-				: $nothing;
-		}
-		return $f;
-	}
-
-	/**
-	 * Provide the "<abbr>" element appropriate to a given abbreviated flag,
-	 * namely the flag indicating a new page, a minor edit, a bot edit, or an
-	 * unpatrolled edit.  By default in English it will contain "N", "m", "b",
-	 * "!" respectively, plus it will have an appropriate title and class.
-	 *
-	 * @param string $flag One key of $wgRecentChangesFlags
-	 * @return String: Raw HTML
-	 */
-	public static function flag( $flag ) {
-		static $flagInfos = null;
-		if ( is_null( $flagInfos ) ) {
-			global $wgRecentChangesFlags;
-			$flagInfos = array();
-			foreach ( $wgRecentChangesFlags as $key => $value ) {
-				$flagInfos[$key]['letter'] = wfMessage( $value['letter'] )->escaped();
-				$flagInfos[$key]['title'] = wfMessage( $value['title'] )->escaped();
-				// Allow customized class name, fall back to flag name
-				$flagInfos[$key]['class'] = Sanitizer::escapeClass(
-					isset( $value['class'] ) ? $value['class'] : $key );
-			}
-		}
-
-		// Inconsistent naming, bleh, kepted for b/c
-		$map = array(
-			'minoredit' => 'minor',
-			'botedit' => 'bot',
-		);
-		if ( isset( $map[$flag] ) ) {
-			$flag = $map[$flag];
-		}
-
-		return "<abbr class='" . $flagInfos[$flag]['class'] . "' title='" . $flagInfos[$flag]['title'] . "'>" .
-			$flagInfos[$flag]['letter'] .
-			'</abbr>';
-	}
-
-	/**
-	 * Returns text for the start of the tabular part of RC
-	 * @return String
-	 */
-	public function beginRecentChangesList() {
-		$this->rc_cache = array();
-		$this->rcMoveIndex = 0;
-		$this->rcCacheIndex = 0;
-		$this->lastdate = '';
-		$this->rclistOpen = false;
-		$this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
-		return '';
-	}
-
-	/**
-	 * Show formatted char difference
-	 * @param $old Integer: bytes
-	 * @param $new Integer: bytes
-	 * @param $context IContextSource context to use
-	 * @return String
-	 */
-	public static function showCharacterDifference( $old, $new, IContextSource $context = null ) {
-		global $wgRCChangedSizeThreshold, $wgMiserMode;
-
-		if ( !$context ) {
-			$context = RequestContext::getMain();
-		}
-
-		$new = (int)$new;
-		$old = (int)$old;
-		$szdiff = $new - $old;
-
-		$lang = $context->getLanguage();
-		$code = $lang->getCode();
-		static $fastCharDiff = array();
-		if ( !isset( $fastCharDiff[$code] ) ) {
-			$fastCharDiff[$code] = $wgMiserMode || $context->msg( 'rc-change-size' )->plain() === '$1';
-		}
-
-		$formattedSize = $lang->formatNum( $szdiff );
-
-		if ( !$fastCharDiff[$code] ) {
-			$formattedSize = $context->msg( 'rc-change-size', $formattedSize )->text();
-		}
-
-		if ( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
-			$tag = 'strong';
-		} else {
-			$tag = 'span';
-		}
-
-		if ( $szdiff === 0 ) {
-			$formattedSizeClass = 'mw-plusminus-null';
-		}
-		if ( $szdiff > 0 ) {
-			$formattedSize = '+' . $formattedSize;
-			$formattedSizeClass = 'mw-plusminus-pos';
-		}
-		if ( $szdiff < 0 ) {
-			$formattedSizeClass = 'mw-plusminus-neg';
-		}
-
-		$formattedTotalSize = $context->msg( 'rc-change-size-new' )->numParams( $new )->text();
-
-		return Html::element( $tag,
-			array( 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ),
-			$context->msg( 'parentheses', $formattedSize )->plain() ) . $lang->getDirMark();
-	}
-
-	/**
-	 * Format the character difference of one or several changes.
-	 *
-	 * @param $old RecentChange
-	 * @param $new RecentChange last change to use, if not provided, $old will be used
-	 * @return string HTML fragment
-	 */
-	public function formatCharacterDifference( RecentChange $old, RecentChange $new = null ) {
-		$oldlen = $old->mAttribs['rc_old_len'];
-
-		if ( $new ) {
-			$newlen = $new->mAttribs['rc_new_len'];
-		} else {
-			$newlen = $old->mAttribs['rc_new_len'];
-		}
-
-		if ( $oldlen === null || $newlen === null ) {
-			return '';
-		}
-
-		return self::showCharacterDifference( $oldlen, $newlen, $this->getContext() );
-	}
-
-	/**
-	 * Returns text for the end of RC
-	 * @return String
-	 */
-	public function endRecentChangesList() {
-		if ( $this->rclistOpen ) {
-			return "</ul>\n";
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * @param string $s HTML to update
-	 * @param $rc_timestamp mixed
-	 */
-	public function insertDateHeader( &$s, $rc_timestamp ) {
-		# Make date header if necessary
-		$date = $this->getLanguage()->userDate( $rc_timestamp, $this->getUser() );
-		if ( $date != $this->lastdate ) {
-			if ( $this->lastdate != '' ) {
-				$s .= "</ul>\n";
-			}
-			$s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
-			$this->lastdate = $date;
-			$this->rclistOpen = true;
-		}
-	}
-
-	/**
-	 * @param string $s HTML to update
-	 * @param $title Title
-	 * @param $logtype string
-	 */
-	public function insertLog( &$s, $title, $logtype ) {
-		$page = new LogPage( $logtype );
-		$logname = $page->getName()->escaped();
-		$s .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $title, $logname ) )->escaped();
-	}
-
-	/**
-	 * @param string $s HTML to update
-	 * @param $rc RecentChange
-	 * @param $unpatrolled
-	 */
-	public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
-		# Diff link
-		if ( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
-			$diffLink = $this->message['diff'];
-		} elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
-			$diffLink = $this->message['diff'];
-		} else {
-			$query = array(
-				'curid' => $rc->mAttribs['rc_cur_id'],
-				'diff' => $rc->mAttribs['rc_this_oldid'],
-				'oldid' => $rc->mAttribs['rc_last_oldid']
-			);
-
-			$diffLink = Linker::linkKnown(
-				$rc->getTitle(),
-				$this->message['diff'],
-				array( 'tabindex' => $rc->counter ),
-				$query
-			);
-		}
-		$diffhist = $diffLink . $this->message['pipe-separator'];
-		# History link
-		$diffhist .= Linker::linkKnown(
-			$rc->getTitle(),
-			$this->message['hist'],
-			array(),
-			array(
-				'curid' => $rc->mAttribs['rc_cur_id'],
-				'action' => 'history'
-			)
-		);
-		$s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() . ' <span class="mw-changeslist-separator">. .</span> ';
-	}
-
-	/**
-	 * @param string $s HTML to update
-	 * @param $rc RecentChange
-	 * @param $unpatrolled
-	 * @param $watched
-	 */
-	public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
-		$params = array();
-
-		$articlelink = Linker::linkKnown(
-			$rc->getTitle(),
-			null,
-			array( 'class' => 'mw-changeslist-title' ),
-			$params
-		);
-		if ( $this->isDeleted( $rc, Revision::DELETED_TEXT ) ) {
-			$articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
-		}
-		# To allow for boldening pages watched by this user
-		$articlelink = "<span class=\"mw-title\">{$articlelink}</span>";
-		# RTL/LTR marker
-		$articlelink .= $this->getLanguage()->getDirMark();
-
-		wfRunHooks( 'ChangesListInsertArticleLink',
-			array( &$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched ) );
-
-		$s .= " $articlelink";
-	}
-
-	/**
-	 * Get the timestamp from $rc formatted with current user's settings
-	 * and a separator
-	 *
-	 * @param $rc RecentChange
-	 * @return string HTML fragment
-	 */
-	public function getTimestamp( $rc ) {
-		return $this->message['semicolon-separator'] . '<span class="mw-changeslist-date">' .
-			$this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() ) . '</span> <span class="mw-changeslist-separator">. .</span> ';
-	}
-
-	/**
-	 * Insert time timestamp string from $rc into $s
-	 *
-	 * @param string $s HTML to update
-	 * @param $rc RecentChange
-	 */
-	public function insertTimestamp( &$s, $rc ) {
-		$s .= $this->getTimestamp( $rc );
-	}
-
-	/**
-	 * Insert links to user page, user talk page and eventually a blocking link
-	 *
-	 * @param &$s String HTML to update
-	 * @param &$rc RecentChange
-	 */
-	public function insertUserRelatedLinks( &$s, &$rc ) {
-		if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
-			$s .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
-		} else {
-			$s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
-				$rc->mAttribs['rc_user_text'] );
-			$s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
-		}
-	}
-
-	/**
-	 * Insert a formatted action
-	 *
-	 * @param $rc RecentChange
-	 * @return string
-	 */
-	public function insertLogEntry( $rc ) {
-		$formatter = LogFormatter::newFromRow( $rc->mAttribs );
-		$formatter->setContext( $this->getContext() );
-		$formatter->setShowUserToolLinks( true );
-		$mark = $this->getLanguage()->getDirMark();
-		return $formatter->getActionText() . " $mark" . $formatter->getComment();
-	}
-
-	/**
-	 * Insert a formatted comment
-	 * @param $rc RecentChange
-	 * @return string
-	 */
-	public function insertComment( $rc ) {
-		if ( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
-			if ( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
-				return ' <span class="history-deleted">' . $this->msg( 'rev-deleted-comment' )->escaped() . '</span>';
-			} else {
-				return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
-			}
-		}
-		return '';
-	}
-
-	/**
-	 * Check whether to enable recent changes patrol features
-	 *
-	 * @deprecated since 1.22
-	 * @return Boolean
-	 */
-	public static function usePatrol() {
-		global $wgUser;
-
-		wfDeprecated( __METHOD__, '1.22' );
-
-		return $wgUser->useRCPatrol();
-	}
-
-	/**
-	 * Returns the string which indicates the number of watching users
-	 * @return string
-	 */
-	protected function numberofWatchingusers( $count ) {
-		static $cache = array();
-		if ( $count > 0 ) {
-			if ( !isset( $cache[$count] ) ) {
-				$cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
-			}
-			return $cache[$count];
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * Determine if said field of a revision is hidden
-	 * @param $rc RCCacheEntry
-	 * @param $field Integer: one of DELETED_* bitfield constants
-	 * @return Boolean
-	 */
-	public static function isDeleted( $rc, $field ) {
-		return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
-	}
-
-	/**
-	 * Determine if the current user is allowed to view a particular
-	 * field of this revision, if it's marked as deleted.
-	 * @param $rc RCCacheEntry
-	 * @param $field Integer
-	 * @param $user User object to check, or null to use $wgUser
-	 * @return Boolean
-	 */
-	public static function userCan( $rc, $field, User $user = null ) {
-		if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
-			return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
-		} else {
-			return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
-		}
-	}
-
-	/**
-	 * @param $link string
-	 * @param $watched bool
-	 * @return string
-	 */
-	protected function maybeWatchedLink( $link, $watched = false ) {
-		if ( $watched ) {
-			return '<strong class="mw-watched">' . $link . '</strong>';
-		} else {
-			return '<span class="mw-rc-unwatched">' . $link . '</span>';
-		}
-	}
-
-	/** Inserts a rollback link
-	 *
-	 * @param $s string
-	 * @param $rc RecentChange
-	 */
-	public function insertRollback( &$s, &$rc ) {
-		if ( $rc->mAttribs['rc_type'] == RC_EDIT && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
-			$page = $rc->getTitle();
-			/** Check for rollback and edit permissions, disallow special pages, and only
-			  * show a link on the top-most revision */
-			if ( $this->getUser()->isAllowed( 'rollback' ) && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
-			{
-				$rev = new Revision( array(
-					'title' => $page,
-					'id' => $rc->mAttribs['rc_this_oldid'],
-					'user' => $rc->mAttribs['rc_user'],
-					'user_text' => $rc->mAttribs['rc_user_text'],
-					'deleted' => $rc->mAttribs['rc_deleted']
-				) );
-				$s .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
-			}
-		}
-	}
-
-	/**
-	 * @param $s string
-	 * @param $rc RecentChange
-	 * @param $classes
-	 */
-	public function insertTags( &$s, &$rc, &$classes ) {
-		if ( empty( $rc->mAttribs['ts_tags'] ) ) {
-			return;
-		}
-
-		list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
-		$classes = array_merge( $classes, $newClasses );
-		$s .= ' ' . $tagSummary;
-	}
-
-	public function insertExtra( &$s, &$rc, &$classes ) {
-		// Empty, used for subclasses to add anything special.
-	}
-
-	protected function showAsUnpatrolled( RecentChange $rc ) {
-		$unpatrolled = false;
-		if ( !$rc->mAttribs['rc_patrolled'] ) {
-			if ( $this->getUser()->useRCPatrol() ) {
-				$unpatrolled = true;
-			} elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
-				$unpatrolled = true;
-			}
-		}
-		return $unpatrolled;
-	}
-}
-
-/**
- * Generate a list of changes using the good old system (no javascript)
- */
-class OldChangesList extends ChangesList {
-	/**
-	 * Format a line using the old system (aka without any javascript).
-	 *
-	 * @param $rc RecentChange, passed by reference
-	 * @param bool $watched (default false)
-	 * @param int $linenumber (default null)
-	 *
-	 * @return string|bool
-	 */
-	public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
-		global $wgRCShowChangedSize;
-		wfProfileIn( __METHOD__ );
-
-		# Should patrol-related stuff be shown?
-		$unpatrolled = $this->showAsUnpatrolled( $rc );
-
-		$dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
-		$this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
-
-		$s = '';
-		$classes = array();
-		// use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
-		if ( $linenumber ) {
-			if ( $linenumber & 1 ) {
-				$classes[] = 'mw-line-odd';
-			} else {
-				$classes[] = 'mw-line-even';
-			}
-		}
-
-		// Indicate watched status on the line to allow for more
-		// comprehensive styling.
-		$classes[] = $watched && $rc->mAttribs['rc_timestamp'] >= $watched
-			? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
-
-		// Moved pages (very very old, not supported anymore)
-		if ( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
-		// Log entries
-		} elseif ( $rc->mAttribs['rc_log_type'] ) {
-			$logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
-			$this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
-		// Log entries (old format) or log targets, and special pages
-		} elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
-			list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
-			if ( $name == 'Log' ) {
-				$this->insertLog( $s, $rc->getTitle(), $subpage );
-			}
-		// Regular entries
-		} else {
-			$this->insertDiffHist( $s, $rc, $unpatrolled );
-			# M, N, b and ! (minor, new, bot and unpatrolled)
-			$s .= $this->recentChangesFlags(
-				array(
-					'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
-					'minor' => $rc->mAttribs['rc_minor'],
-					'unpatrolled' => $unpatrolled,
-					'bot' => $rc->mAttribs['rc_bot']
-				),
-				''
-			);
-			$this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
-		}
-		# Edit/log timestamp
-		$this->insertTimestamp( $s, $rc );
-		# Bytes added or removed
-		if ( $wgRCShowChangedSize ) {
-			$cd = $this->formatCharacterDifference( $rc );
-			if ( $cd !== '' ) {
-				$s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
-			}
-		}
-
-		if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
-			$s .= $this->insertLogEntry( $rc );
-		} else {
-			# User tool links
-			$this->insertUserRelatedLinks( $s, $rc );
-			# LTR/RTL direction mark
-			$s .= $this->getLanguage()->getDirMark();
-			$s .= $this->insertComment( $rc );
-		}
-
-		# Tags
-		$this->insertTags( $s, $rc, $classes );
-		# Rollback
-		$this->insertRollback( $s, $rc );
-		# For subclasses
-		$this->insertExtra( $s, $rc, $classes );
-
-		# How many users watch this page
-		if ( $rc->numberofWatchingusers > 0 ) {
-			$s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
-		}
-
-		if ( $this->watchlist ) {
-			$classes[] = Sanitizer::escapeClass( 'watchlist-' . $rc->mAttribs['rc_namespace'] . '-' . $rc->mAttribs['rc_title'] );
-		}
-
-		if ( !wfRunHooks( 'OldChangesListRecentChangesLine', array( &$this, &$s, $rc, &$classes ) ) ) {
-			wfProfileOut( __METHOD__ );
-			return false;
-		}
-
-		wfProfileOut( __METHOD__ );
-		return "$dateheader<li class=\"" . implode( ' ', $classes ) . "\">" . $s . "</li>\n";
-	}
-}
-
-/**
- * Generate a list of changes using an Enhanced system (uses javascript).
- */
 class EnhancedChangesList extends ChangesList {
 
 	protected $rc_cache;
diff --git a/includes/changes/OldChangesList.php b/includes/changes/OldChangesList.php
new file mode 100644
index 0000000000..a7fe9342ef
--- /dev/null
+++ b/includes/changes/OldChangesList.php
@@ -0,0 +1,130 @@
+<?php
+/**
+ * Generate a list of changes using the good old system (no javascript).
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+class OldChangesList extends ChangesList {
+
+	/**
+	 * Format a line using the old system (aka without any javascript).
+	 *
+	 * @param $rc RecentChange, passed by reference
+	 * @param bool $watched (default false)
+	 * @param int $linenumber (default null)
+	 *
+	 * @return string|bool
+	 */
+	public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
+		global $wgRCShowChangedSize;
+		wfProfileIn( __METHOD__ );
+
+		# Should patrol-related stuff be shown?
+		$unpatrolled = $this->showAsUnpatrolled( $rc );
+
+		$dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
+		$this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
+
+		$s = '';
+		$classes = array();
+		// use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
+		if ( $linenumber ) {
+			if ( $linenumber & 1 ) {
+				$classes[] = 'mw-line-odd';
+			} else {
+				$classes[] = 'mw-line-even';
+			}
+		}
+
+		// Indicate watched status on the line to allow for more
+		// comprehensive styling.
+		$classes[] = $watched && $rc->mAttribs['rc_timestamp'] >= $watched
+			? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
+
+		// Moved pages (very very old, not supported anymore)
+		if ( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
+		// Log entries
+		} elseif ( $rc->mAttribs['rc_log_type'] ) {
+			$logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
+			$this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
+		// Log entries (old format) or log targets, and special pages
+		} elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
+			list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
+			if ( $name == 'Log' ) {
+				$this->insertLog( $s, $rc->getTitle(), $subpage );
+			}
+		// Regular entries
+		} else {
+			$this->insertDiffHist( $s, $rc, $unpatrolled );
+			# M, N, b and ! (minor, new, bot and unpatrolled)
+			$s .= $this->recentChangesFlags(
+				array(
+					'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
+					'minor' => $rc->mAttribs['rc_minor'],
+					'unpatrolled' => $unpatrolled,
+					'bot' => $rc->mAttribs['rc_bot']
+				),
+				''
+			);
+			$this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
+		}
+		# Edit/log timestamp
+		$this->insertTimestamp( $s, $rc );
+		# Bytes added or removed
+		if ( $wgRCShowChangedSize ) {
+			$cd = $this->formatCharacterDifference( $rc );
+			if ( $cd !== '' ) {
+				$s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
+			}
+		}
+
+		if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
+			$s .= $this->insertLogEntry( $rc );
+		} else {
+			# User tool links
+			$this->insertUserRelatedLinks( $s, $rc );
+			# LTR/RTL direction mark
+			$s .= $this->getLanguage()->getDirMark();
+			$s .= $this->insertComment( $rc );
+		}
+
+		# Tags
+		$this->insertTags( $s, $rc, $classes );
+		# Rollback
+		$this->insertRollback( $s, $rc );
+		# For subclasses
+		$this->insertExtra( $s, $rc, $classes );
+
+		# How many users watch this page
+		if ( $rc->numberofWatchingusers > 0 ) {
+			$s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
+		}
+
+		if ( $this->watchlist ) {
+			$classes[] = Sanitizer::escapeClass( 'watchlist-' . $rc->mAttribs['rc_namespace'] . '-' . $rc->mAttribs['rc_title'] );
+		}
+
+		if ( !wfRunHooks( 'OldChangesListRecentChangesLine', array( &$this, &$s, $rc, &$classes ) ) ) {
+			wfProfileOut( __METHOD__ );
+			return false;
+		}
+
+		wfProfileOut( __METHOD__ );
+		return "$dateheader<li class=\"" . implode( ' ', $classes ) . "\">" . $s . "</li>\n";
+	}
+}
diff --git a/includes/changes/RCCacheEntry.php b/includes/changes/RCCacheEntry.php
new file mode 100644
index 0000000000..9aef3d30e2
--- /dev/null
+++ b/includes/changes/RCCacheEntry.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+class RCCacheEntry extends RecentChange {
+	var $secureName, $link;
+	var $curlink, $difflink, $lastlink, $usertalklink, $versionlink;
+	var $userlink, $timestamp, $watched;
+
+	/**
+	 * @param $rc RecentChange
+	 * @return RCCacheEntry
+	 */
+	static function newFromParent( $rc ) {
+		$rc2 = new RCCacheEntry;
+		$rc2->mAttribs = $rc->mAttribs;
+		$rc2->mExtra = $rc->mExtra;
+		return $rc2;
+	}
+}
diff --git a/includes/RecentChange.php b/includes/changes/RecentChange.php
similarity index 100%
rename from includes/RecentChange.php
rename to includes/changes/RecentChange.php
-- 
2.20.1