New infrastructure for actions, as discussed on wikitech-l. Fairly huge commit.
[lhc/web/wiklou.git] / includes / Article.php
index 4031005..97eb17b 100644 (file)
@@ -17,31 +17,29 @@ class Article {
        /**@{{
         * @private
         */
-       var $mComment = '';               // !<
+       protected $mContext;              // !< RequestContext
+
        var $mContent;                    // !<
        var $mContentLoaded = false;      // !<
        var $mCounter = -1;               // !< Not loaded
-       var $mCurID = -1;                 // !< Not loaded
        var $mDataLoaded = false;         // !<
        var $mForUpdate = false;          // !<
        var $mGoodAdjustment = 0;         // !<
        var $mIsRedirect = false;         // !<
        var $mLatest = false;             // !<
-       var $mMinorEdit;                  // !<
        var $mOldId;                      // !<
        var $mPreparedEdit = false;       // !< Title object if set
        var $mRedirectedFrom = null;      // !< Title object if set
        var $mRedirectTarget = null;      // !< Title object if set
        var $mRedirectUrl = false;        // !<
        var $mRevIdFetched = 0;           // !<
-       var $mRevision;                   // !< Revision object if set
+       var $mLastRevision = null;                // !< Latest revision if set
+       var $mRevision = null;            // !< Loaded revision object if set
        var $mTimestamp = '';             // !<
        var $mTitle;                      // !< Title object
        var $mTotalAdjustment = 0;        // !<
        var $mTouched = '19700101000000'; // !<
-       var $mUser = -1;                  // !< Not loaded
-       var $mUserText = '';              // !< username from Revision if set
-       var $mParserOptions;              // !< ParserOptions object for $wgUser articles
+       var $mParserOptions;              // !< ParserOptions object
        var $mParserOutput;               // !< ParserCache object if set
        /**@}}*/
 
@@ -58,7 +56,7 @@ class Article {
 
        /**
         * Constructor from an page id
-        * @param $id The article ID to load
+        * @param $id Int article ID to load
         */
        public static function newFromID( $id ) {
                $t = Title::newFromID( $id );
@@ -119,7 +117,7 @@ class Article {
         */
        public function insertRedirect() {
                // recurse through to only get the final target
-               $retval = Title::newFromRedirectRecurse( $this->getContent() );
+               $retval = Title::newFromRedirectRecurse( $this->getRawText() );
                if ( !$retval ) {
                        return null;
                }
@@ -160,7 +158,7 @@ class Article {
         *
         * @param $text string article content containing redirect info
         * @return mixed false, Title of in-wiki target, or string with URL
-        * @deprecated
+        * @deprecated since 1.17
         */
        public function followRedirectText( $text ) {
                // recurse through to only get the final target
@@ -224,11 +222,11 @@ class Article {
                $this->mDataLoaded    = false;
                $this->mContentLoaded = false;
 
-               $this->mCurID = $this->mUser = $this->mCounter = -1; # Not loaded
+               $this->mCounter = -1; # Not loaded
                $this->mRedirectedFrom = null; # Title object if set
                $this->mRedirectTarget = null; # Title object if set
-               $this->mUserText =
-               $this->mTimestamp = $this->mComment = '';
+               $this->mLastRevision = null; # Latest revision
+               $this->mTimestamp = '';
                $this->mGoodAdjustment = $this->mTotalAdjustment = 0;
                $this->mTouched = '19700101000000';
                $this->mForUpdate = false;
@@ -250,7 +248,7 @@ class Article {
         * @return Return the text of this revision
         */
        public function getContent() {
-               global $wgUser, $wgContLang, $wgMessageCache;
+               global $wgUser;
 
                wfProfileIn( __METHOD__ );
 
@@ -258,12 +256,10 @@ class Article {
                        # If this is a MediaWiki:x message, then load the messages
                        # and return the message value for x.
                        if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
-                               # If this is a system message, get the default text.
-                               list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
-                               $text = wfMsgGetKey( $message, false, $lang, false );
-
-                               if ( wfEmptyMsg( $message, $text ) )
+                               $text = $this->mTitle->getDefaultMessageText();
+                               if ( $text === false ) {
                                        $text = '';
+                               }
                        } else {
                                $text = wfMsgExt( $wgUser->isLoggedIn() ? 'noarticletext' : 'noarticletextanon', 'parsemag' );
                        }
@@ -406,6 +402,26 @@ class Article {
                wfProfileOut( __METHOD__ );
        }
 
+       /**
+        * Return the list of revision fields that should be selected to create
+        * a new page.
+        */
+       public static function selectFields() {
+               return array(
+                       'page_id',
+                       'page_namespace',
+                       'page_title',
+                       'page_restrictions',
+                       'page_counter',
+                       'page_is_redirect',
+                       'page_is_new',
+                       'page_random',
+                       'page_touched',
+                       'page_latest',
+                       'page_len',
+               );
+       }
+
        /**
         * Fetch a page record with the given conditions
         * @param $dbr Database object
@@ -413,19 +429,7 @@ class Article {
         * @return mixed Database result resource, or false on failure
         */
        protected function pageData( $dbr, $conditions ) {
-               $fields = array(
-                               'page_id',
-                               'page_namespace',
-                               'page_title',
-                               'page_restrictions',
-                               'page_counter',
-                               'page_is_redirect',
-                               'page_is_new',
-                               'page_random',
-                               'page_touched',
-                               'page_latest',
-                               'page_len',
-               );
+               $fields = self::selectFields();
 
                wfRunHooks( 'ArticlePageDataBefore', array( &$this, &$fields ) );
 
@@ -444,7 +448,7 @@ class Article {
         * @param $title Title object
         * @return mixed Database result resource, or false on failure
         */
-       public function pageDataFromTitle( $dbr, $title ) {
+       protected function pageDataFromTitle( $dbr, $title ) {
                return $this->pageData( $dbr, array(
                        'page_namespace' => $title->getNamespace(),
                        'page_title'     => $title->getDBkey() ) );
@@ -455,6 +459,7 @@ class Article {
         *
         * @param $dbr Database
         * @param $id Integer
+        * @return mixed Database result resource, or false on failure
         */
        protected function pageDataFromId( $dbr, $id ) {
                return $this->pageData( $dbr, array( 'page_id' => $id ) );
@@ -468,8 +473,8 @@ class Article {
         */
        public function loadPageData( $data = 'fromdb' ) {
                if ( $data === 'fromdb' ) {
-                       $dbr = wfGetDB( DB_MASTER );
-                       $data = $this->pageDataFromId( $dbr, $this->getId() );
+                       $dbr = wfGetDB( DB_SLAVE );
+                       $data = $this->pageDataFromTitle( $dbr, $this->mTitle );
                }
 
                $lc = LinkCache::singleton();
@@ -506,8 +511,6 @@ class Article {
                        return $this->mContent;
                }
 
-               $dbr = wfGetDB( DB_MASTER );
-
                # Pre-fill content with error message so that if something
                # fails we'll have something telling us what we intended.
                $t = $this->mTitle->getPrefixedText();
@@ -521,28 +524,29 @@ class Article {
                                return false;
                        }
 
-                       $data = $this->pageDataFromId( $dbr, $revision->getPage() );
-
-                       if ( !$data ) {
-                               wfDebug( __METHOD__ . " failed to get page data linked to revision id $oldid\n" );
-                               return false;
-                       }
-
-                       $this->mTitle = Title::makeTitle( $data->page_namespace, $data->page_title );
-                       $this->loadPageData( $data );
-               } else {
-                       if ( !$this->mDataLoaded ) {
-                               $data = $this->pageDataFromTitle( $dbr, $this->mTitle );
+                       if ( !$this->mDataLoaded || $this->getID() != $revision->getPage() ) {
+                               $data = $this->pageDataFromId( wfGetDB( DB_SLAVE ), $revision->getPage() );
 
                                if ( !$data ) {
-                                       wfDebug( __METHOD__ . " failed to find page data for title " . $this->mTitle->getPrefixedText() . "\n" );
+                                       wfDebug( __METHOD__ . " failed to get page data linked to revision id $oldid\n" );
                                        return false;
                                }
 
+                               $this->mTitle = Title::makeTitle( $data->page_namespace, $data->page_title );
                                $this->loadPageData( $data );
                        }
+               } else {
+                       if ( !$this->mDataLoaded ) {
+                               $this->loadPageData();
+                       }
+
+                       if ( $this->mLatest === false ) {
+                               wfDebug( __METHOD__ . " failed to find page data for title " . $this->mTitle->getPrefixedText() . "\n" );
+                               return false;
+                       }
+
                        $revision = Revision::newFromId( $this->mLatest );
-                       if (  $revision === null ) {
+                       if ( $revision === null ) {
                                wfDebug( __METHOD__ . " failed to retrieve current page, rev_id {$this->mLatest}\n" );
                                return false;
                        }
@@ -552,10 +556,9 @@ class Article {
                // We should instead work with the Revision object when we need it...
                $this->mContent   = $revision->getText( Revision::FOR_THIS_USER ); // Loads if user is allowed
 
-               $this->mUser      = $revision->getUser();
-               $this->mUserText  = $revision->getUserText();
-               $this->mComment   = $revision->getComment();
-               $this->mTimestamp = wfTimestamp( TS_MW, $revision->getTimestamp() );
+               if ( $revision->getId() == $this->mLatest ) {
+                       $this->setLastEdit( $revision );
+               }
 
                $this->mRevIdFetched = $revision->getId();
                $this->mContentLoaded = true;
@@ -568,33 +571,16 @@ class Article {
 
        /**
         * Read/write accessor to select FOR UPDATE
+        * @FIXME: remove, does nothing
         *
         * @param $x Mixed: FIXME
         * @return mixed value of $x, or value stored in Article::mForUpdate
         */
        public function forUpdate( $x = null ) {
+               wfDeprecated();
                return wfSetVar( $this->mForUpdate, $x );
        }
 
-       /**
-        * Get options for all SELECT statements
-        *
-        * @param $options Array: an optional options array which'll be appended to
-        *                       the default
-        * @return Array: options
-        */
-       protected function getSelectOptions( $options = '' ) {
-               if ( $this->mForUpdate ) {
-                       if ( is_array( $options ) ) {
-                               $options[] = 'FOR UPDATE';
-                       } else {
-                               $options = 'FOR UPDATE';
-                       }
-               }
-
-               return $options;
-       }
-
        /**
         * @return int Page ID
         */
@@ -635,8 +621,7 @@ class Article {
                                $this->mCounter = $dbr->selectField( 'page',
                                        'page_counter',
                                        array( 'page_id' => $id ),
-                                       __METHOD__,
-                                       $this->getSelectOptions()
+                                       __METHOD__
                                );
                        }
                }
@@ -667,18 +652,14 @@ class Article {
         */
        public function isRedirect( $text = false ) {
                if ( $text === false ) {
-                       if ( $this->mDataLoaded ) {
-                               return $this->mIsRedirect;
+                       if ( !$this->mDataLoaded ) {
+                               $this->loadPageData();
                        }
 
-                       // Apparently loadPageData was never called
-                       $this->loadContent();
-                       $titleObj = Title::newFromRedirectRecurse( $this->fetchContent() );
+                       return (bool)$this->mIsRedirect;
                } else {
-                       $titleObj = Title::newFromRedirect( $text );
+                       return Title::newFromRedirect( $text ) !== null;
                }
-
-               return $titleObj !== null;
        }
 
        /**
@@ -692,7 +673,7 @@ class Article {
                        return true;
                }
 
-               return $this->exists() && isset( $this->mRevision ) && $this->mRevision->isCurrent();
+               return $this->exists() && $this->mRevision && $this->mRevision->isCurrent();
        }
 
        /**
@@ -700,8 +681,8 @@ class Article {
         * This isn't necessary for all uses, so it's only done if needed.
         */
        protected function loadLastEdit() {
-               if ( -1 != $this->mUser ) {
-                       return;
+               if ( $this->mLastRevision !== null ) {
+                       return; // already loaded
                }
 
                # New or non-existent articles have no user information
@@ -710,52 +691,77 @@ class Article {
                        return;
                }
 
-               $this->mLastRevision = Revision::loadFromPageId( wfGetDB( DB_MASTER ), $id );
-               if ( !is_null( $this->mLastRevision ) ) {
-                       $this->mUser      = $this->mLastRevision->getUser();
-                       $this->mUserText  = $this->mLastRevision->getUserText();
-                       $this->mTimestamp = $this->mLastRevision->getTimestamp();
-                       $this->mComment   = $this->mLastRevision->getComment();
-                       $this->mMinorEdit = $this->mLastRevision->isMinor();
-                       $this->mRevIdFetched = $this->mLastRevision->getId();
+               $revision = Revision::loadFromPageId( wfGetDB( DB_MASTER ), $id );
+               if ( $revision ) {
+                       $this->setLastEdit( $revision );
                }
        }
 
        /**
-        * @return string GMT timestamp of last article revision
-        **/
+        * Set the latest revision
+        */
+       protected function setLastEdit( Revision $revision ) {
+               $this->mLastRevision = $revision;
+               $this->mTimestamp = $revision->getTimestamp();
+       }
 
+       /**
+        * @return string GMT timestamp of last article revision
+        */
        public function getTimestamp() {
                // Check if the field has been filled by ParserCache::get()
                if ( !$this->mTimestamp ) {
                        $this->loadLastEdit();
                }
-
                return wfTimestamp( TS_MW, $this->mTimestamp );
        }
 
        /**
+        * @param $audience Integer: one of:
+        *      Revision::FOR_PUBLIC       to be displayed to all users
+        *      Revision::FOR_THIS_USER    to be displayed to $wgUser
+        *      Revision::RAW              get the text regardless of permissions
         * @return int user ID for the user that made the last article revision
         */
-       public function getUser() {
+       public function getUser( $audience = Revision::FOR_PUBLIC ) {
                $this->loadLastEdit();
-               return $this->mUser;
+               if ( $this->mLastRevision ) {
+                       return $this->mLastRevision->getUser( $audience );
+               } else {
+                       return -1;
+               }
        }
 
        /**
+        * @param $audience Integer: one of:
+        *      Revision::FOR_PUBLIC       to be displayed to all users
+        *      Revision::FOR_THIS_USER    to be displayed to $wgUser
+        *      Revision::RAW              get the text regardless of permissions
         * @return string username of the user that made the last article revision
         */
-       public function getUserText() {
+       public function getUserText( $audience = Revision::FOR_PUBLIC ) {
                $this->loadLastEdit();
-               return $this->mUserText;
+               if ( $this->mLastRevision ) {
+                       return $this->mLastRevision->getUserText( $audience );
+               } else {
+                       return '';
+               }
        }
 
        /**
+        * @param $audience Integer: one of:
+        *      Revision::FOR_PUBLIC       to be displayed to all users
+        *      Revision::FOR_THIS_USER    to be displayed to $wgUser
+        *      Revision::RAW              get the text regardless of permissions
         * @return string Comment stored for the last article revision
         */
-       public function getComment() {
+       public function getComment( $audience = Revision::FOR_PUBLIC ) {
                $this->loadLastEdit();
-               return $this->mComment;
+               if ( $this->mLastRevision ) {
+                       return $this->mLastRevision->getComment( $audience );
+               } else {
+                       return '';
+               }
        }
 
        /**
@@ -765,7 +771,11 @@ class Article {
         */
        public function getMinorEdit() {
                $this->loadLastEdit();
-               return $this->mMinorEdit;
+               if ( $this->mLastRevision ) {
+                       return $this->mLastRevision->isMinor();
+               } else {
+                       return false;
+               }
        }
 
        /**
@@ -774,51 +784,55 @@ class Article {
         * @return int revision ID of last article revision
         */
        public function getRevIdFetched() {
-               $this->loadLastEdit();
-               return $this->mRevIdFetched;
+               if ( $this->mRevIdFetched ) {
+                       return $this->mRevIdFetched;
+               } else {
+                       return $this->getLatest();
+               }
        }
 
        /**
-        * FIXME: this does what?
-        * @param $limit Integer: default 0.
-        * @param $offset Integer: default 0.
-        * @return UserArrayFromResult object with User objects of article contributors for requested range
+        * Get a list of users who have edited this article, not including the user who made
+        * the most recent revision, which you can get from $article->getUser() if you want it
+        * @return UserArray
         */
-       public function getContributors( $limit = 0, $offset = 0 ) {
+       public function getContributors() {
                # FIXME: this is expensive; cache this info somewhere.
 
                $dbr = wfGetDB( DB_SLAVE );
-               $revTable = $dbr->tableName( 'revision' );
                $userTable = $dbr->tableName( 'user' );
 
-               $pageId = $this->getId();
+               $tables = array( 'revision', 'user' );
 
-               $user = $this->getUser();
+               $fields = array(
+                       "$userTable.*",
+                       'rev_user_text AS user_name',
+                       'MAX(rev_timestamp) AS timestamp',
+               );
+
+               $conds = array( 'rev_page' => $this->getId() );
 
+               // The user who made the top revision gets credited as "this page was last edited by
+               // John, based on contributions by Tom, Dick and Harry", so don't include them twice.
+               $user = $this->getUser();
                if ( $user ) {
-                       $excludeCond = "AND rev_user != $user";
+                       $conds[] = "rev_user != $user";
                } else {
-                       $userText = $dbr->addQuotes( $this->getUserText() );
-                       $excludeCond = "AND rev_user_text != $userText";
+                       $conds[] = "rev_user_text != {$dbr->addQuotes( $this->getUserText() )}";
                }
 
-               $deletedBit = $dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER ); // username hidden?
-
-               $sql = "SELECT {$userTable}.*, rev_user_text as user_name, MAX(rev_timestamp) as timestamp
-                       FROM $revTable LEFT JOIN $userTable ON rev_user = user_id
-                       WHERE rev_page = $pageId
-                       $excludeCond
-                       AND $deletedBit = 0
-                       GROUP BY rev_user, rev_user_text
-                       ORDER BY timestamp DESC";
+               $conds[] = "{$dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER )} = 0"; // username hidden?
 
-               if ( $limit > 0 ) {
-                       $sql = $dbr->limitResult( $sql, $limit, $offset );
-               }
-
-               $sql .= ' ' . $this->getSelectOptions();
-               $res = $dbr->query( $sql, __METHOD__ );
+               $jconds = array(
+                       'user' => array( 'LEFT JOIN', 'rev_user = user_id' ),
+               );
 
+               $options = array(
+                       'GROUP BY' => array( 'rev_user', 'rev_user_text' ),
+                       'ORDER BY' => 'timestamp DESC',
+               );
+               
+               $res = $dbr->select( $tables, $fields, $conds, __METHOD__, $options, $jconds );
                return new UserArrayFromResult( $res );
        }
 
@@ -834,6 +848,32 @@ class Article {
 
                # Get variables from query string
                $oldid = $this->getOldID();
+
+               # getOldID may want us to redirect somewhere else
+               if ( $this->mRedirectUrl ) {
+                       $wgOut->redirect( $this->mRedirectUrl );
+                       wfDebug( __METHOD__ . ": redirecting due to oldid\n" );
+                       wfProfileOut( __METHOD__ );
+
+                       return;
+               }
+
+               $wgOut->setArticleFlag( true );
+               # Set page title (may be overridden by DISPLAYTITLE)
+               $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
+
+               # If we got diff in the query, we want to see a diff page instead of the article.
+               if ( $wgRequest->getCheck( 'diff' ) ) {
+                       wfDebug( __METHOD__ . ": showing diff page\n" );
+                       $this->showDiffPage();
+                       wfProfileOut( __METHOD__ );
+
+                       return;
+               }
+
+               # Allow frames by default
+               $wgOut->allowClickjacking();
+
                $parserCache = ParserCache::singleton();
 
                $parserOptions = $this->getParserOptions();
@@ -869,28 +909,6 @@ class Article {
                        }
                }
 
-               # getOldID may want us to redirect somewhere else
-               if ( $this->mRedirectUrl ) {
-                       $wgOut->redirect( $this->mRedirectUrl );
-                       wfDebug( __METHOD__ . ": redirecting due to oldid\n" );
-                       wfProfileOut( __METHOD__ );
-
-                       return;
-               }
-
-               $wgOut->setArticleFlag( true );
-               # Set page title (may be overridden by DISPLAYTITLE)
-               $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
-
-               # If we got diff in the query, we want to see a diff page instead of the article.
-               if ( $wgRequest->getCheck( 'diff' ) ) {
-                       wfDebug( __METHOD__ . ": showing diff page\n" );
-                       $this->showDiffPage();
-                       wfProfileOut( __METHOD__ );
-
-                       return;
-               }
-
                if ( !$wgUseETag && !$this->mTitle->quickUserCan( 'edit' ) ) {
                        $parserOptions->setEditSection( false );
                }
@@ -1030,10 +1048,11 @@ class Article {
                # tents of 'pagetitle-view-mainpage' instead of the default (if
                # that's not empty).
                # This message always exists because it is in the i18n files
-               if ( $this->mTitle->equals( Title::newMainPage() )
-                       && ( $m = wfMsgForContent( 'pagetitle-view-mainpage' ) ) !== '' )
-               {
-                       $wgOut->setHTMLTitle( $m );
+               if ( $this->mTitle->equals( Title::newMainPage() ) ) {
+                       $msg = wfMessage( 'pagetitle-view-mainpage' )->inContentLanguage();
+                       if ( !$msg->isDisabled() ) {
+                               $wgOut->setHTMLTitle( $msg->title( $this->mTitle )->text() );
+                       }
                }
 
                # Now that we've filled $this->mParserOutput, we know whether
@@ -1066,9 +1085,7 @@ class Article {
                $this->mRevIdFetched = $de->mNewid;
                $de->showDiffPage( $diffOnly );
 
-               // Needed to get the page's current revision
-               $this->loadPageData();
-               if ( $diff == 0 || $diff == $this->mLatest ) {
+               if ( $diff == 0 || $diff == $this->getLatest() ) {
                        # Run view updates for current revision only
                        $this->viewUpdates();
                }
@@ -1112,8 +1129,7 @@ class Article {
                if ( $ns == NS_USER || $ns == NS_USER_TALK ) {
                        # Don't index user and user talk pages for blocked users (bug 11443)
                        if ( !$this->mTitle->isSubpage() ) {
-                               $block = new Block();
-                               if ( $block->load( $this->mTitle->getText() ) ) {
+                               if ( Block::newFromTarget( null, $this->mTitle->getText() ) instanceof Block ) {
                                        return array(
                                                'index'  => 'noindex',
                                                'follow' => 'nofollow'
@@ -1177,7 +1193,7 @@ class Article {
         * merging of several policies using array_merge().
         * @param $policy Mixed, returns empty array on null/false/'', transparent
         *            to already-converted arrays, converts String.
-        * @return associative Array: 'index' => <indexpolicy>, 'follow' => <followpolicy>
+        * @return Array: 'index' => <indexpolicy>, 'follow' => <followpolicy>
         */
        public static function formatRobotPolicy( $policy ) {
                if ( is_array( $policy ) ) {
@@ -1212,13 +1228,12 @@ class Article {
                global $wgOut, $wgUser, $wgRequest, $wgRedirectSources;
 
                $rdfrom = $wgRequest->getVal( 'rdfrom' );
-               $sk = $wgUser->getSkin();
 
                if ( isset( $this->mRedirectedFrom ) ) {
                        // This is an internally redirected page view.
                        // We'll need a backlink to the source page for navigation.
                        if ( wfRunHooks( 'ArticleViewRedirect', array( &$this ) ) ) {
-                               $redir = $sk->link(
+                               $redir = $wgUser->getSkin()->link(
                                        $this->mRedirectedFrom,
                                        null,
                                        array(),
@@ -1246,7 +1261,7 @@ class Article {
                        // This is an externally redirected view, from some other wiki.
                        // If it was reported from a trusted site, supply a backlink.
                        if ( $wgRedirectSources && preg_match( $wgRedirectSources, $rdfrom ) ) {
-                               $redir = $sk->makeExternalLink( $rdfrom, $rdfrom );
+                               $redir = $wgUser->getSkin()->makeExternalLink( $rdfrom, $rdfrom );
                                $s = wfMsgExt( 'redirectedfrom', array( 'parseinline', 'replaceafter' ), $redir );
                                $wgOut->setSubtitle( $s );
 
@@ -1265,8 +1280,7 @@ class Article {
                global $wgOut;
 
                if ( $this->mTitle->isTalkPage() ) {
-                       $msg = wfMsgNoTrans( 'talkpageheader' );
-                       if ( $msg !== '-' && !wfEmptyMsg( 'talkpageheader', $msg ) ) {
+                       if ( !wfMessage( 'talkpageheader' )->isDisabled() ) {
                                $wgOut->wrapWikiMsg( "<div class=\"mw-talkpageheader\">\n$1\n</div>", array( 'talkpageheader' ) );
                        }
                }
@@ -1291,6 +1305,9 @@ class Article {
                if ( $wgUseTrackbacks ) {
                        $this->addTrackbacks();
                }
+
+               wfRunHooks( 'ArticleViewFooter', array( $this ) );
+
        }
 
        /**
@@ -1309,6 +1326,7 @@ class Article {
 
                $sk = $wgUser->getSkin();
                $token = $wgUser->editToken( $rcid );
+               $wgOut->preventClickjacking();
 
                $wgOut->addHTML(
                        "<div class='patrollink'>" .
@@ -1383,7 +1401,7 @@ class Article {
                                wfMsgNoTrans( 'missingarticle-rev', $oldid ) );
                } elseif ( $this->mTitle->getNamespace() === NS_MEDIAWIKI ) {
                        // Use the default message text
-                       $text = $this->getContent();
+                       $text = $this->mTitle->getDefaultMessageText();
                } else {
                        $createErrors = $this->mTitle->getUserPermissionsErrors( 'create', $wgUser );
                        $editErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
@@ -1400,7 +1418,7 @@ class Article {
                if ( !$this->hasViewableContent() ) {
                        // If there's no backing content, send a 404 Not Found
                        // for better machine handling of broken links.
-                       $wgRequest->response()->header( "HTTP/1.x 404 Not Found" );
+                       $wgRequest->response()->header( "HTTP/1.1 404 Not Found" );
                }
 
                $wgOut->addWikiText( $text );
@@ -1526,7 +1544,7 @@ class Article {
        /**
         * View redirect
         *
-        * @param $target Title object or Array of destination(s) to redirect
+        * @param $target Title|Array of destination(s) to redirect
         * @param $appendSubtitle Boolean [optional]
         * @param $forceKnown Boolean: should the image be shown as a bluelink regardless of existence?
         * @return string containing HMTL with redirect link
@@ -1557,13 +1575,12 @@ class Article {
                $nextRedirect = $wgStylePath . '/common/images/nextredirect' . $imageDir . '.png';
                $alt = $wgContLang->isRTL() ? '←' : '→';
                // Automatically append redirect=no to each link, since most of them are redirect pages themselves.
-               // FIXME: where this happens?
                foreach ( $target as $rt ) {
                        $link .= Html::element( 'img', array( 'src' => $nextRedirect, 'alt' => $alt ) );
                        if ( $forceKnown ) {
-                               $link .= $sk->linkKnown( $rt, htmlspecialchars( $rt->getFullText() ) );
+                               $link .= $sk->linkKnown( $rt, htmlspecialchars( $rt->getFullText(), array(), array( 'redirect' => 'no' ) ) );
                        } else {
-                               $link .= $sk->link( $rt, htmlspecialchars( $rt->getFullText() ) );
+                               $link .= $sk->link( $rt, htmlspecialchars( $rt->getFullText() ), array(), array( 'redirect' => 'no' ) );
                        }
                }
 
@@ -1577,7 +1594,7 @@ class Article {
         * Builds trackback links for article display if $wgUseTrackbacks is set to true
         */
        public function addTrackbacks() {
-               global $wgOut, $wgUser;
+               global $wgOut;
 
                $dbr = wfGetDB( DB_SLAVE );
                $tbs = $dbr->select( 'trackbacks',
@@ -1589,13 +1606,15 @@ class Article {
                        return;
                }
 
+               $wgOut->preventClickjacking();
+
                $tbtext = "";
                foreach ( $tbs as $o ) {
                        $rmvtxt = "";
 
-                       if ( $wgUser->isAllowed( 'trackback' ) ) {
+                       if ( $wgOut->getUser()->isAllowed( 'trackback' ) ) {
                                $delurl = $this->mTitle->getFullURL( "action=deletetrackback&tbid=" .
-                                       $o->tb_id . "&token=" . urlencode( $wgUser->editToken() ) );
+                                       $o->tb_id . "&token=" . urlencode( $wgOut->getUser()->editToken() ) );
                                $rmvtxt = wfMsg( 'trackbackremove', htmlspecialchars( $delurl ) );
                        }
 
@@ -1615,15 +1634,15 @@ class Article {
         * Removes trackback record for current article from trackbacks table
         */
        public function deletetrackback() {
-               global $wgUser, $wgRequest, $wgOut;
+               global $wgRequest, $wgOut;
 
-               if ( !$wgUser->matchEditToken( $wgRequest->getVal( 'token' ) ) ) {
+               if ( !$wgOut->getUser()->matchEditToken( $wgRequest->getVal( 'token' ) ) ) {
                        $wgOut->addWikiMsg( 'sessionfailure' );
 
                        return;
                }
 
-               $permission_errors = $this->mTitle->getUserPermissionsErrors( 'delete', $wgUser );
+               $permission_errors = $this->mTitle->getUserPermissionsErrors( 'delete', $wgOut->getUser() );
 
                if ( count( $permission_errors ) ) {
                        $wgOut->showPermissionsErrorPage( $permission_errors );
@@ -1653,9 +1672,9 @@ class Article {
         * Handle action=purge
         */
        public function purge() {
-               global $wgUser, $wgRequest, $wgOut;
+               global $wgRequest, $wgOut;
 
-               if ( $wgUser->isAllowed( 'purge' ) || $wgRequest->wasPosted() ) {
+               if ( $wgOut->getUser()->isAllowed( 'purge' ) || $wgRequest->wasPosted() ) {
                        //FIXME: shouldn't this be in doPurge()?
                        if ( wfRunHooks( 'ArticlePurge', array( &$this ) ) ) {
                                $this->doPurge();
@@ -1702,15 +1721,13 @@ class Article {
                }
 
                if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
-                       global $wgMessageCache;
-
                        if ( $this->getID() == 0 ) {
                                $text = false;
                        } else {
                                $text = $this->getRawText();
                        }
 
-                       $wgMessageCache->replace( $this->mTitle->getDBkey(), $text );
+                       MessageCache::singleton()->replace( $this->mTitle->getDBkey(), $text );
                }
        }
 
@@ -1747,7 +1764,7 @@ class Article {
 
                if ( $affected ) {
                        $newid = $dbw->insertId();
-                       $this->mTitle->resetArticleId( $newid );
+                       $this->mTitle->resetArticleID( $newid );
                }
                wfProfileOut( __METHOD__ );
 
@@ -1759,7 +1776,7 @@ class Article {
         *
         * @param $dbw DatabaseBase: object
         * @param $revision Revision: For ID number, and text used to set
-                           length and redirect status fields
+                                               length and redirect status fields
         * @param $lastRevision Integer: if given, will not overwrite the page field
         *                      when different from the currently set value.
         *                      Giving 0 indicates the new page flag should be set
@@ -1812,7 +1829,7 @@ class Article {
         * Add row to the redirect table if this is a redirect, remove otherwise.
         *
         * @param $dbw Database
-        * @param $redirectTitle a title object pointing to the redirect target,
+        * @param $redirectTitle Title object pointing to the redirect target,
         *                       or NULL if this is not a redirect
         * @param $lastRevIsRedirect If given, will optimize adding and
         *                           removing rows in redirect table.
@@ -1825,25 +1842,25 @@ class Article {
                // Delete if changing from redirect to non-redirect
                $isRedirect = !is_null( $redirectTitle );
 
-               if ( $isRedirect || is_null( $lastRevIsRedirect ) || $lastRevIsRedirect !== $isRedirect ) {
-                       wfProfileIn( __METHOD__ );
-                       if ( $isRedirect ) {
-                               $this->insertRedirectEntry( $redirectTitle );
-                       } else {
-                               // This is not a redirect, remove row from redirect table
-                               $where = array( 'rd_from' => $this->getId() );
-                               $dbw->delete( 'redirect', $where, __METHOD__ );
-                       }
+               if ( !$isRedirect && !is_null( $lastRevIsRedirect ) && $lastRevIsRedirect === $isRedirect ) {
+                       return true;
+               }
 
-                       if ( $this->getTitle()->getNamespace() == NS_FILE ) {
-                               RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $this->getTitle() );
-                       }
-                       wfProfileOut( __METHOD__ );
+               wfProfileIn( __METHOD__ );
+               if ( $isRedirect ) {
+                       $this->insertRedirectEntry( $redirectTitle );
+               } else {
+                       // This is not a redirect, remove row from redirect table
+                       $where = array( 'rd_from' => $this->getId() );
+                       $dbw->delete( 'redirect', $where, __METHOD__ );
+               }
 
-                       return ( $dbw->affectedRows() != 0 );
+               if ( $this->getTitle()->getNamespace() == NS_FILE ) {
+                       RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $this->getTitle() );
                }
+               wfProfileOut( __METHOD__ );
 
-               return true;
+               return ( $dbw->affectedRows() != 0 );
        }
 
        /**
@@ -1907,6 +1924,7 @@ class Article {
                        if ( !$rev ) {
                                wfDebug( "Article::replaceSection asked for bogus section (page: " .
                                        $this->getId() . "; section: $section; edittime: $edittime)\n" );
+                               wfProfileOut( __METHOD__ );
                                return null;
                        }
 
@@ -1930,75 +1948,6 @@ class Article {
                return $text;
        }
 
-       /**
-        * This function is not deprecated until somebody fixes the core not to use
-        * it. Nevertheless, use Article::doEdit() instead.
-        */
-       function insertNewArticle( $text, $summary, $isminor, $watchthis, $suppressRC = false, $comment = false, $bot = false ) {
-               $flags = EDIT_NEW | EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
-                       ( $isminor ? EDIT_MINOR : 0 ) |
-                       ( $suppressRC ? EDIT_SUPPRESS_RC : 0 ) |
-                       ( $bot ? EDIT_FORCE_BOT : 0 );
-
-               # If this is a comment, add the summary as headline
-               if ( $comment && $summary != "" ) {
-                       $text = wfMsgForContent( 'newsectionheaderdefaultlevel', $summary ) . "\n\n" . $text;
-               }
-               $this->doEdit( $text, $summary, $flags );
-
-               $dbw = wfGetDB( DB_MASTER );
-               if ( $watchthis ) {
-                       if ( !$this->mTitle->userIsWatching() ) {
-                               $dbw->begin();
-                               $this->doWatch();
-                               $dbw->commit();
-                       }
-               } else {
-                       if ( $this->mTitle->userIsWatching() ) {
-                               $dbw->begin();
-                               $this->doUnwatch();
-                               $dbw->commit();
-                       }
-               }
-               $this->doRedirect( $this->isRedirect( $text ) );
-       }
-
-       /**
-        * @deprecated use Article::doEdit()
-        */
-       function updateArticle( $text, $summary, $minor, $watchthis, $forceBot = false, $sectionanchor = '' ) {
-               $flags = EDIT_UPDATE | EDIT_DEFER_UPDATES | EDIT_AUTOSUMMARY |
-                       ( $minor ? EDIT_MINOR : 0 ) |
-                       ( $forceBot ? EDIT_FORCE_BOT : 0 );
-
-               $status = $this->doEdit( $text, $summary, $flags );
-
-               if ( !$status->isOK() ) {
-                       return false;
-               }
-
-               $dbw = wfGetDB( DB_MASTER );
-               if ( $watchthis ) {
-                       if ( !$this->mTitle->userIsWatching() ) {
-                               $dbw->begin();
-                               $this->doWatch();
-                               $dbw->commit();
-                       }
-               } else {
-                       if ( $this->mTitle->userIsWatching() ) {
-                               $dbw->begin();
-                               $this->doUnwatch();
-                               $dbw->commit();
-                       }
-               }
-
-               $extraQuery = ''; // Give extensions a chance to modify URL query on update
-               wfRunHooks( 'ArticleUpdateBeforeRedirect', array( $this, &$sectionanchor, &$extraQuery ) );
-
-               $this->doRedirect( $this->isRedirect( $text ), $sectionanchor, $extraQuery );
-               return true;
-       }
-
        /**
         * Check flags and add EDIT_NEW or EDIT_UPDATE to them as needed.
         * @param $flags Int
@@ -2049,7 +1998,7 @@ class Article {
         * auto-detection due to MediaWiki's performance-optimised locking strategy.
         *
         * @param $baseRevId the revision ID this edit was based off, if any
-        * @param $user Optional user object, $wgUser will be used if not passed
+        * @param $user User (optional), $wgUser will be used if not passed
         *
         * @return Status object. Possible errors:
         *     edit-hook-aborted:       The ArticleSave hook aborted the edit but didn't set the fatal flag of $status
@@ -2088,12 +2037,12 @@ class Article {
                        $flags & EDIT_MINOR, null, null, &$flags, &$status ) ) )
                {
                        wfDebug( __METHOD__ . ": ArticleSave hook aborted save!\n" );
-                       wfProfileOut( __METHOD__ );
 
                        if ( $status->isOK() ) {
                                $status->fatal( 'edit-hook-aborted' );
                        }
 
+                       wfProfileOut( __METHOD__ );
                        return $status;
                }
 
@@ -2109,7 +2058,7 @@ class Article {
                        $summary = $this->getAutosummary( $oldtext, $text, $flags );
                }
 
-               $editInfo = $this->prepareTextForEdit( $text );
+               $editInfo = $this->prepareTextForEdit( $text, null, $user );
                $text = $editInfo->pst;
                $newsize = strlen( $text );
 
@@ -2202,7 +2151,7 @@ class Article {
                                $status->warning( 'edit-no-change' );
                                $revision = null;
                                // Keep the same revision ID, but do some updates on it
-                               $revisionId = $this->getRevIdFetched();
+                               $revisionId = $this->getLatest();
                                // Update page_touched, this is usually implicit in the page update
                                // Other cache updates are done in onArticleEdit()
                                $this->mTitle->invalidateCache();
@@ -2222,7 +2171,7 @@ class Article {
                        # as a template. Partly deferred.
                        Article::onArticleEdit( $this->mTitle );
                        # Update links tables, site stats, etc.
-                       $this->editUpdates( $text, $summary, $isminor, $now, $revisionId, $changed );
+                       $this->editUpdates( $text, $summary, $isminor, $now, $revisionId, $changed, $user );
                } else {
                        # Create new article
                        $status->value['new'] = true;
@@ -2260,6 +2209,8 @@ class Article {
                        $revisionId = $revision->insertOn( $dbw );
 
                        $this->mTitle->resetArticleID( $newid );
+                       # Update the LinkCache. Resetting the Title ArticleID means it will rely on having that already cached (FIXME?)
+                       LinkCache::singleton()->addGoodLinkObj( $newid, $this->mTitle, strlen( $text ), (bool)Title::newFromRedirect( $text ), $revisionId );
 
                        # Update the page record with revision data
                        $this->updateRevisionOn( $dbw, $revision, 0 );
@@ -2286,7 +2237,7 @@ class Article {
                        $dbw->commit();
 
                        # Update links, etc.
-                       $this->editUpdates( $text, $summary, $isminor, $now, $revisionId, true );
+                       $this->editUpdates( $text, $summary, $isminor, $now, $revisionId, true, $user );
 
                        # Clear caches
                        Article::onArticleCreate( $this->mTitle );
@@ -2310,14 +2261,6 @@ class Article {
                return $status;
        }
 
-       /**
-        * @deprecated wrapper for doRedirect
-        */
-       public function showArticle( $text, $subtitle , $sectionanchor = '', $me2, $now, $summary, $oldid ) {
-               wfDeprecated( __METHOD__ );
-               $this->doRedirect( $this->isRedirect( $text ), $sectionanchor );
-       }
-
        /**
         * Output a redirect back to the article.
         * This is typically used after an edit.
@@ -2344,14 +2287,14 @@ class Article {
         * Mark this particular edit/page as patrolled
         */
        public function markpatrolled() {
-               global $wgOut, $wgUser, $wgRequest;
+               global $wgOut, $wgRequest;
 
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
 
                # If we haven't been given an rc_id value, we can't do anything
                $rcid = (int) $wgRequest->getVal( 'rcid' );
 
-               if ( !$wgUser->matchEditToken( $wgRequest->getVal( 'token' ), $rcid ) ) {
+               if ( !$wgOut->getUser()->matchEditToken( $wgRequest->getVal( 'token' ), $rcid ) ) {
                        $wgOut->showErrorPage( 'sessionfailure-title', 'sessionfailure' );
                        return;
                }
@@ -2402,90 +2345,39 @@ class Article {
 
        /**
         * User-interface handler for the "watch" action
+        * @deprecated since 1.18
         */
        public function watch() {
-               global $wgUser, $wgOut;
-
-               if ( $wgUser->isAnon() ) {
-                       $wgOut->showErrorPage( 'watchnologin', 'watchnologintext' );
-                       return;
-               }
-
-               if ( wfReadOnly() ) {
-                       $wgOut->readOnlyPage();
-                       return;
-               }
-
-               if ( $this->doWatch() ) {
-                       $wgOut->setPagetitle( wfMsg( 'addedwatch' ) );
-                       $wgOut->setRobotPolicy( 'noindex,nofollow' );
-                       $wgOut->addWikiMsg( 'addedwatchtext', $this->mTitle->getPrefixedText() );
-               }
-
-               $wgOut->returnToMain( true, $this->mTitle->getPrefixedText() );
+               Action::factory( 'watch', $this )->show();
        }
 
        /**
         * Add this page to $wgUser's watchlist
+        *
+        * This is safe to be called multiple times
+        *
         * @return bool true on successful watch operation
+        * @deprecated since 1.18
         */
        public function doWatch() {
-               global $wgUser;
-
-               if ( $wgUser->isAnon() ) {
-                       return false;
-               }
-
-               if ( wfRunHooks( 'WatchArticle', array( &$wgUser, &$this ) ) ) {
-                       $wgUser->addWatch( $this->mTitle );
-                       return wfRunHooks( 'WatchArticleComplete', array( &$wgUser, &$this ) );
-               }
-
-               return false;
+               return Action::factory( 'watch', $this )->execute();
        }
 
        /**
         * User interface handler for the "unwatch" action.
+        * @deprecated since 1.18
         */
        public function unwatch() {
-               global $wgUser, $wgOut;
-
-               if ( $wgUser->isAnon() ) {
-                       $wgOut->showErrorPage( 'watchnologin', 'watchnologintext' );
-                       return;
-               }
-
-               if ( wfReadOnly() ) {
-                       $wgOut->readOnlyPage();
-                       return;
-               }
-
-               if ( $this->doUnwatch() ) {
-                       $wgOut->setPagetitle( wfMsg( 'removedwatch' ) );
-                       $wgOut->setRobotPolicy( 'noindex,nofollow' );
-                       $wgOut->addWikiMsg( 'removedwatchtext', $this->mTitle->getPrefixedText() );
-               }
-
-               $wgOut->returnToMain( true, $this->mTitle->getPrefixedText() );
+               Action::factory( 'unwatch', $this )->show();
        }
 
        /**
         * Stop watching a page
         * @return bool true on successful unwatch
+        * @deprecated since 1.18
         */
        public function doUnwatch() {
-               global $wgUser;
-
-               if ( $wgUser->isAnon() ) {
-                       return false;
-               }
-
-               if ( wfRunHooks( 'UnwatchArticle', array( &$wgUser, &$this ) ) ) {
-                       $wgUser->removeWatch( $this->mTitle );
-                       return wfRunHooks( 'UnwatchArticleComplete', array( &$wgUser, &$this ) );
-               }
-
-               return false;
+               return Action::factory( 'unwatch', $this )->execute();
        }
 
        /**
@@ -2610,9 +2502,9 @@ class Article {
                                $protect_description = '';
                                foreach ( $limit as $action => $restrictions ) {
                                        if ( !isset( $expiry[$action] ) )
-                                               $expiry[$action] = Block::infinity();
+                                               $expiry[$action] = $dbw->getInfinity();
 
-                                       $encodedExpiry[$action] = Block::encodeExpiry( $expiry[$action], $dbw );
+                                       $encodedExpiry[$action] = $dbw->encodeExpiry( $expiry[$action] );
                                        if ( $restrictions != '' ) {
                                                $protect_description .= "[$action=$restrictions] (";
                                                if ( $encodedExpiry[$action] != 'infinity' ) {
@@ -2717,226 +2609,28 @@ class Article {
         * @param &$hasHistory Boolean: whether the page has a history
         * @return mixed String containing deletion reason or empty string, or boolean false
         *    if no revision occurred
+        * @deprecated since 1.18
         */
        public function generateReason( &$hasHistory ) {
-               global $wgContLang;
-
-               $dbw = wfGetDB( DB_MASTER );
-               // Get the last revision
-               $rev = Revision::newFromTitle( $this->mTitle );
-
-               if ( is_null( $rev ) ) {
-                       return false;
-               }
-
-               // Get the article's contents
-               $contents = $rev->getText();
-               $blank = false;
-
-               // If the page is blank, use the text from the previous revision,
-               // which can only be blank if there's a move/import/protect dummy revision involved
-               if ( $contents == '' ) {
-                       $prev = $rev->getPrevious();
-
-                       if ( $prev )    {
-                               $contents = $prev->getText();
-                               $blank = true;
-                       }
-               }
-
-               // Find out if there was only one contributor
-               // Only scan the last 20 revisions
-               $res = $dbw->select( 'revision', 'rev_user_text',
-                       array( 'rev_page' => $this->getID(), $dbw->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' ),
-                       __METHOD__,
-                       array( 'LIMIT' => 20 )
-               );
-
-               if ( $res === false ) {
-                       // This page has no revisions, which is very weird
-                       return false;
-               }
-
-               $hasHistory = ( $res->numRows() > 1 );
-               $row = $dbw->fetchObject( $res );
-
-               if ( $row ) { // $row is false if the only contributor is hidden
-                       $onlyAuthor = $row->rev_user_text;
-                       // Try to find a second contributor
-                       foreach ( $res as $row ) {
-                               if ( $row->rev_user_text != $onlyAuthor ) { // Bug 22999
-                                       $onlyAuthor = false;
-                                       break;
-                               }
-                       }
-               } else {
-                       $onlyAuthor = false;
-               }
-
-               // Generate the summary with a '$1' placeholder
-               if ( $blank ) {
-                       // The current revision is blank and the one before is also
-                       // blank. It's just not our lucky day
-                       $reason = wfMsgForContent( 'exbeforeblank', '$1' );
-               } else {
-                       if ( $onlyAuthor ) {
-                               $reason = wfMsgForContent( 'excontentauthor', '$1', $onlyAuthor );
-                       } else {
-                               $reason = wfMsgForContent( 'excontent', '$1' );
-                       }
-               }
-
-               if ( $reason == '-' ) {
-                       // Allow these UI messages to be blanked out cleanly
-                       return '';
-               }
-
-               // Replace newlines with spaces to prevent uglyness
-               $contents = preg_replace( "/[\n\r]/", ' ', $contents );
-               // Calculate the maximum amount of chars to get
-               // Max content length = max comment length - length of the comment (excl. $1) - '...'
-               $maxLength = 255 - ( strlen( $reason ) - 2 ) - 3;
-               $contents = $wgContLang->truncate( $contents, $maxLength );
-               // Remove possible unfinished links
-               $contents = preg_replace( '/\[\[([^\]]*)\]?$/', '$1', $contents );
-               // Now replace the '$1' placeholder
-               $reason = str_replace( '$1', $contents, $reason );
-
-               return $reason;
+               return DeleteAction::getAutoReason( $this );
        }
 
 
        /*
         * UI entry point for page deletion
+        * @deprecated since 1.18
         */
        public function delete() {
-               global $wgUser, $wgOut, $wgRequest;
-
-               $confirm = $wgRequest->wasPosted() &&
-                               $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ) );
-
-               $this->DeleteReasonList = $wgRequest->getText( 'wpDeleteReasonList', 'other' );
-               $this->DeleteReason = $wgRequest->getText( 'wpReason' );
-
-               $reason = $this->DeleteReasonList;
-
-               if ( $reason != 'other' && $this->DeleteReason != '' ) {
-                       // Entry from drop down menu + additional comment
-                       $reason .= wfMsgForContent( 'colon-separator' ) . $this->DeleteReason;
-               } elseif ( $reason == 'other' ) {
-                       $reason = $this->DeleteReason;
-               }
-
-               # Flag to hide all contents of the archived revisions
-               $suppress = $wgRequest->getVal( 'wpSuppress' ) && $wgUser->isAllowed( 'suppressrevision' );
-
-               # This code desperately needs to be totally rewritten
-
-               # Read-only check...
-               if ( wfReadOnly() ) {
-                       $wgOut->readOnlyPage();
-
-                       return;
-               }
-
-               # Check permissions
-               $permission_errors = $this->mTitle->getUserPermissionsErrors( 'delete', $wgUser );
-
-               if ( count( $permission_errors ) > 0 ) {
-                       $wgOut->showPermissionsErrorPage( $permission_errors );
-
-                       return;
-               }
-
-               $wgOut->setPagetitle( wfMsg( 'delete-confirm', $this->mTitle->getPrefixedText() ) );
-
-               # Better double-check that it hasn't been deleted yet!
-               $dbw = wfGetDB( DB_MASTER );
-               $conds = $this->mTitle->pageCond();
-               $latest = $dbw->selectField( 'page', 'page_latest', $conds, __METHOD__ );
-               if ( $latest === false ) {
-                       $wgOut->showFatalError(
-                               Html::rawElement(
-                                       'div',
-                                       array( 'class' => 'error mw-error-cannotdelete' ),
-                                       wfMsgExt( 'cannotdelete', array( 'parse' ), $this->mTitle->getPrefixedText() )
-                               )
-                       );
-                       $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
-                       LogEventsList::showLogExtract(
-                               $wgOut,
-                               'delete',
-                               $this->mTitle->getPrefixedText()
-                       );
-
-                       return;
-               }
-
-               # Hack for big sites
-               $bigHistory = $this->isBigDeletion();
-               if ( $bigHistory && !$this->mTitle->userCan( 'bigdelete' ) ) {
-                       global $wgLang, $wgDeleteRevisionsLimit;
-
-                       $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
-                               array( 'delete-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) ) );
-
-                       return;
-               }
-
-               if ( $confirm ) {
-                       $this->doDelete( $reason, $suppress );
-
-                       if ( $wgRequest->getCheck( 'wpWatch' ) && $wgUser->isLoggedIn() ) {
-                               $this->doWatch();
-                       } elseif ( $this->mTitle->userIsWatching() ) {
-                               $this->doUnwatch();
-                       }
-
-                       return;
-               }
-
-               // Generate deletion reason
-               $hasHistory = false;
-               if ( !$reason ) {
-                       $reason = $this->generateReason( $hasHistory );
-               }
-
-               // If the page has a history, insert a warning
-               if ( $hasHistory && !$confirm ) {
-                       global $wgLang;
-
-                       $skin = $wgUser->getSkin();
-                       $revisions = $this->estimateRevisionCount();
-                       //FIXME: lego
-                       $wgOut->addHTML( '<strong class="mw-delete-warning-revisions">' .
-                               wfMsgExt( 'historywarning', array( 'parseinline' ), $wgLang->formatNum( $revisions ) ) .
-                               wfMsgHtml( 'word-separator' ) . $skin->historyLink() .
-                               '</strong>'
-                       );
-
-                       if ( $bigHistory ) {
-                               global $wgDeleteRevisionsLimit;
-                               $wgOut->wrapWikiMsg( "<div class='error'>\n$1\n</div>\n",
-                                       array( 'delete-warning-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) ) );
-                       }
-               }
-
-               return $this->confirmDelete( $reason );
+               return Action::factory( 'delete', $this )->show();
        }
 
        /**
         * @return bool whether or not the page surpasses $wgDeleteRevisionsLimit revisions
+        * @deprecated since 1.18
         */
        public function isBigDeletion() {
                global $wgDeleteRevisionsLimit;
-
-               if ( $wgDeleteRevisionsLimit ) {
-                       $revCount = $this->estimateRevisionCount();
-
-                       return $revCount > $wgDeleteRevisionsLimit;
-               }
-
-               return false;
+               return $wgDeleteRevisionsLimit && $this->estimateRevisionCount() > $wgDeleteRevisionsLimit;
        }
 
        /**
@@ -2972,10 +2666,11 @@ class Article {
                                        'page_namespace' => $this->mTitle->getNamespace(),
                                        'page_title' => $this->mTitle->getDBkey(),
                                        'rev_page = page_id'
-                               ), __METHOD__, $this->getSelectOptions( array(
+                               ), __METHOD__,
+                               array(
                                        'ORDER BY' => 'rev_timestamp DESC',
                                        'LIMIT' => $num
-                               ) )
+                               )
                        );
 
                        if ( !$res ) {
@@ -3003,154 +2698,20 @@ class Article {
                return $authors;
        }
 
-       /**
-        * Output deletion confirmation dialog
-        * FIXME: Move to another file?
-        * @param $reason String: prefilled reason
-        */
-       public function confirmDelete( $reason ) {
-               global $wgOut, $wgUser;
-
-               wfDebug( "Article::confirmDelete\n" );
-
-               $deleteBackLink = $wgUser->getSkin()->linkKnown( $this->mTitle );
-               $wgOut->setSubtitle( wfMsgHtml( 'delete-backlink', $deleteBackLink ) );
-               $wgOut->setRobotPolicy( 'noindex,nofollow' );
-               $wgOut->addWikiMsg( 'confirmdeletetext' );
-
-               wfRunHooks( 'ArticleConfirmDelete', array( $this, $wgOut, &$reason ) );
-
-               if ( $wgUser->isAllowed( 'suppressrevision' ) ) {
-                       $suppress = "<tr id=\"wpDeleteSuppressRow\" name=\"wpDeleteSuppressRow\">
-                                       <td></td>
-                                       <td class='mw-input'><strong>" .
-                                               Xml::checkLabel( wfMsg( 'revdelete-suppress' ),
-                                                       'wpSuppress', 'wpSuppress', false, array( 'tabindex' => '4' ) ) .
-                                       "</strong></td>
-                               </tr>";
-               } else {
-                       $suppress = '';
-               }
-               $checkWatch = $wgUser->getBoolOption( 'watchdeletion' ) || $this->mTitle->userIsWatching();
-
-               $form = Xml::openElement( 'form', array( 'method' => 'post',
-                       'action' => $this->mTitle->getLocalURL( 'action=delete' ), 'id' => 'deleteconfirm' ) ) .
-                       Xml::openElement( 'fieldset', array( 'id' => 'mw-delete-table' ) ) .
-                       Xml::tags( 'legend', null, wfMsgExt( 'delete-legend', array( 'parsemag', 'escapenoentities' ) ) ) .
-                       Xml::openElement( 'table', array( 'id' => 'mw-deleteconfirm-table' ) ) .
-                       "<tr id=\"wpDeleteReasonListRow\">
-                               <td class='mw-label'>" .
-                                       Xml::label( wfMsg( 'deletecomment' ), 'wpDeleteReasonList' ) .
-                               "</td>
-                               <td class='mw-input'>" .
-                                       Xml::listDropDown( 'wpDeleteReasonList',
-                                               wfMsgForContent( 'deletereason-dropdown' ),
-                                               wfMsgForContent( 'deletereasonotherlist' ), '', 'wpReasonDropDown', 1 ) .
-                               "</td>
-                       </tr>
-                       <tr id=\"wpDeleteReasonRow\">
-                               <td class='mw-label'>" .
-                                       Xml::label( wfMsg( 'deleteotherreason' ), 'wpReason' ) .
-                               "</td>
-                               <td class='mw-input'>" .
-                               Html::input( 'wpReason', $reason, 'text', array(
-                                       'size' => '60',
-                                       'maxlength' => '255',
-                                       'tabindex' => '2',
-                                       'id' => 'wpReason',
-                                       'autofocus'
-                               ) ) .
-                               "</td>
-                       </tr>";
-
-               # Disallow watching if user is not logged in
-               if ( $wgUser->isLoggedIn() ) {
-                       $form .= "
-                       <tr>
-                               <td></td>
-                               <td class='mw-input'>" .
-                                       Xml::checkLabel( wfMsg( 'watchthis' ),
-                                               'wpWatch', 'wpWatch', $checkWatch, array( 'tabindex' => '3' ) ) .
-                               "</td>
-                       </tr>";
-               }
-
-               $form .= "
-                       $suppress
-                       <tr>
-                               <td></td>
-                               <td class='mw-submit'>" .
-                                       Xml::submitButton( wfMsg( 'deletepage' ),
-                                               array( 'name' => 'wpConfirmB', 'id' => 'wpConfirmB', 'tabindex' => '5' ) ) .
-                               "</td>
-                       </tr>" .
-                       Xml::closeElement( 'table' ) .
-                       Xml::closeElement( 'fieldset' ) .
-                       Html::hidden( 'wpEditToken', $wgUser->editToken() ) .
-                       Xml::closeElement( 'form' );
-
-                       if ( $wgUser->isAllowed( 'editinterface' ) ) {
-                               $skin = $wgUser->getSkin();
-                               $title = Title::makeTitle( NS_MEDIAWIKI, 'Deletereason-dropdown' );
-                               $link = $skin->link(
-                                       $title,
-                                       wfMsgHtml( 'delete-edit-reasonlist' ),
-                                       array(),
-                                       array( 'action' => 'edit' )
-                               );
-                               $form .= '<p class="mw-delete-editreasons">' . $link . '</p>';
-                       }
-
-               $wgOut->addHTML( $form );
-               $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
-               LogEventsList::showLogExtract( $wgOut, 'delete',
-                       $this->mTitle->getPrefixedText()
-               );
-       }
-
        /**
         * Perform a deletion and output success or failure messages
+        * @deprecated since 1.18
         */
        public function doDelete( $reason, $suppress = false ) {
-               global $wgOut, $wgUser;
-
-               $id = $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
-
-               $error = '';
-               if ( wfRunHooks( 'ArticleDelete', array( &$this, &$wgUser, &$reason, &$error ) ) ) {
-                       if ( $this->doDeleteArticle( $reason, $suppress, $id ) ) {
-                               $deleted = $this->mTitle->getPrefixedText();
-
-                               $wgOut->setPagetitle( wfMsg( 'actioncomplete' ) );
-                               $wgOut->setRobotPolicy( 'noindex,nofollow' );
-
-                               $loglink = '[[Special:Log/delete|' . wfMsgNoTrans( 'deletionlog' ) . ']]';
-
-                               $wgOut->addWikiMsg( 'deletedtext', $deleted, $loglink );
-                               $wgOut->returnToMain( false );
-                               wfRunHooks( 'ArticleDeleteComplete', array( &$this, &$wgUser, $reason, $id ) );
-                       }
-               } else {
-                       if ( $error == '' ) {
-                               $wgOut->showFatalError(
-                                       Html::rawElement(
-                                               'div',
-                                               array( 'class' => 'error mw-error-cannotdelete' ),
-                                               wfMsgExt( 'cannotdelete', array( 'parse' ), $this->mTitle->getPrefixedText() )
-                                       )
-                               );
-
-                               $wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) );
-
-                               LogEventsList::showLogExtract(
-                                       $wgOut,
-                                       'delete',
-                                       $this->mTitle->getPrefixedText()
-                               );
-                       } else {
-                               $wgOut->showFatalError( $error );
-                       }
-               }
+               return DeleteAction::doDeleteArticle(
+                       $this,
+                       $this->getContext(),
+                       array(
+                               'Suppress' => $suppress !== false,
+                               'Reason' => $reason,
+                       ),
+                       true
+               );
        }
 
        /**
@@ -3166,138 +2727,19 @@ class Article {
         * @param $id int article ID
         * @param $commit boolean defaults to true, triggers transaction end
         * @return boolean true if successful
+        *
+        * @deprecated since 1.18
         */
-       public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true ) {
-               global $wgDeferredUpdateList, $wgUseTrackbacks;
-
-               wfDebug( __METHOD__ . "\n" );
-
-               $dbw = wfGetDB( DB_MASTER );
-               $t = $this->mTitle->getDBkey();
-               $id = $id ? $id : $this->mTitle->getArticleID( Title::GAID_FOR_UPDATE );
-
-               if ( $t === '' || $id == 0 ) {
-                       return false;
-               }
-
-               $u = new SiteStatsUpdate( 0, 1, - (int)$this->isCountable( $this->getRawText() ), -1 );
-               array_push( $wgDeferredUpdateList, $u );
-
-               // Bitfields to further suppress the content
-               if ( $suppress ) {
-                       $bitfield = 0;
-                       // This should be 15...
-                       $bitfield |= Revision::DELETED_TEXT;
-                       $bitfield |= Revision::DELETED_COMMENT;
-                       $bitfield |= Revision::DELETED_USER;
-                       $bitfield |= Revision::DELETED_RESTRICTED;
-               } else {
-                       $bitfield = 'rev_deleted';
-               }
-
-               $dbw->begin();
-               // For now, shunt the revision data into the archive table.
-               // Text is *not* removed from the text table; bulk storage
-               // is left intact to avoid breaking block-compression or
-               // immutable storage schemes.
-               //
-               // For backwards compatibility, note that some older archive
-               // table entries will have ar_text and ar_flags fields still.
-               //
-               // In the future, we may keep revisions and mark them with
-               // the rev_deleted field, which is reserved for this purpose.
-               $dbw->insertSelect( 'archive', array( 'page', 'revision' ),
+       public function doDeleteArticle( $reason, $suppress = false, $id = 0, $commit = true, &$error = '' ) {
+               return DeleteAction::doDeleteArticle(
+                       $this,
+                       $this->getContext(),
                        array(
-                               'ar_namespace'  => 'page_namespace',
-                               'ar_title'      => 'page_title',
-                               'ar_comment'    => 'rev_comment',
-                               'ar_user'       => 'rev_user',
-                               'ar_user_text'  => 'rev_user_text',
-                               'ar_timestamp'  => 'rev_timestamp',
-                               'ar_minor_edit' => 'rev_minor_edit',
-                               'ar_rev_id'     => 'rev_id',
-                               'ar_text_id'    => 'rev_text_id',
-                               'ar_text'       => '\'\'', // Be explicit to appease
-                               'ar_flags'      => '\'\'', // MySQL's "strict mode"...
-                               'ar_len'        => 'rev_len',
-                               'ar_page_id'    => 'page_id',
-                               'ar_deleted'    => $bitfield
-                       ), array(
-                               'page_id' => $id,
-                               'page_id = rev_page'
-                       ), __METHOD__
+                               'Suppress' => $suppress !== false,
+                               'Reason' => $reason,
+                       ),
+                       $commit
                );
-
-               # Delete restrictions for it
-               $dbw->delete( 'page_restrictions', array ( 'pr_page' => $id ), __METHOD__ );
-
-               # Now that it's safely backed up, delete it
-               $dbw->delete( 'page', array( 'page_id' => $id ), __METHOD__ );
-               $ok = ( $dbw->affectedRows() > 0 ); // getArticleId() uses slave, could be laggy
-
-               if ( !$ok ) {
-                       $dbw->rollback();
-                       return false;
-               }
-
-               # Fix category table counts
-               $cats = array();
-               $res = $dbw->select( 'categorylinks', 'cl_to', array( 'cl_from' => $id ), __METHOD__ );
-
-               foreach ( $res as $row ) {
-                       $cats [] = $row->cl_to;
-               }
-
-               $this->updateCategoryCounts( array(), $cats );
-
-               # If using cascading deletes, we can skip some explicit deletes
-               if ( !$dbw->cascadingDeletes() ) {
-                       $dbw->delete( 'revision', array( 'rev_page' => $id ), __METHOD__ );
-
-                       if ( $wgUseTrackbacks )
-                               $dbw->delete( 'trackbacks', array( 'tb_page' => $id ), __METHOD__ );
-
-                       # Delete outgoing links
-                       $dbw->delete( 'pagelinks', array( 'pl_from' => $id ) );
-                       $dbw->delete( 'imagelinks', array( 'il_from' => $id ) );
-                       $dbw->delete( 'categorylinks', array( 'cl_from' => $id ) );
-                       $dbw->delete( 'templatelinks', array( 'tl_from' => $id ) );
-                       $dbw->delete( 'externallinks', array( 'el_from' => $id ) );
-                       $dbw->delete( 'langlinks', array( 'll_from' => $id ) );
-                       $dbw->delete( 'redirect', array( 'rd_from' => $id ) );
-               }
-
-               # If using cleanup triggers, we can skip some manual deletes
-               if ( !$dbw->cleanupTriggers() ) {
-                       # Clean up recentchanges entries...
-                       $dbw->delete( 'recentchanges',
-                               array( 'rc_type != ' . RC_LOG,
-                                       'rc_namespace' => $this->mTitle->getNamespace(),
-                                       'rc_title' => $this->mTitle->getDBkey() ),
-                               __METHOD__ );
-                       $dbw->delete( 'recentchanges',
-                               array( 'rc_type != ' . RC_LOG, 'rc_cur_id' => $id ),
-                               __METHOD__ );
-               }
-
-               # Clear caches
-               Article::onArticleDelete( $this->mTitle );
-
-               # Clear the cached article id so the interface doesn't act like we exist
-               $this->mTitle->resetArticleID( 0 );
-
-               # Log the deletion, if the page was suppressed, log it at Oversight instead
-               $logtype = $suppress ? 'suppress' : 'delete';
-               $log = new LogPage( $logtype );
-
-               # Make sure logging got through
-               $log->addEntry( 'delete', $this->mTitle, $reason, array() );
-
-               if ( $commit ) {
-                       $dbw->commit();
-               }
-
-               return true;
        }
 
        /**
@@ -3450,7 +2892,7 @@ class Article {
                        $flags |= EDIT_MINOR;
                }
 
-               if ( $bot && ( $wgUser->isAllowed( 'markbotedits' ) || $wgUser->isAllowed( 'bot' ) ) ) {
+               if ( $bot && ( $wgUser->isAllowedAny( 'markbotedits', 'bot' ) ) ) {
                        $flags |= EDIT_FORCE_BOT;
                }
 
@@ -3583,7 +3025,7 @@ class Article {
         * Prepare text which is about to be saved.
         * Returns a stdclass with source, pst and output members
         */
-       public function prepareTextForEdit( $text, $revid = null ) {
+       public function prepareTextForEdit( $text, $revid = null, User $user = null ) {
                if ( $this->mPreparedEdit && $this->mPreparedEdit->newText == $text && $this->mPreparedEdit->revid == $revid ) {
                        // Already prepared
                        return $this->mPreparedEdit;
@@ -3591,13 +3033,20 @@ class Article {
 
                global $wgParser;
 
+               if( $user === null ) {
+                       global $wgUser;
+                       $user = $wgUser;
+               }
+               $popts = ParserOptions::newFromUser( $user );
+               wfRunHooks( 'ArticlePrepareTextForEdit', array( $this, $popts ) );
+
                $edit = (object)array();
                $edit->revid = $revid;
                $edit->newText = $text;
-               $edit->pst = $this->preSaveTransform( $text );
-               $edit->popts = $this->getParserOptions( true );
+               $edit->pst = $this->preSaveTransform( $text, $user, $popts );
+               $edit->popts = $this->getParserOptions();
                $edit->output = $wgParser->parse( $edit->pst, $this->mTitle, $edit->popts, true, true, $revid );
-               $edit->oldText = $this->getContent();
+               $edit->oldText = $this->getRawText();
 
                $this->mPreparedEdit = $edit;
 
@@ -3614,12 +3063,13 @@ class Article {
         * @param $text String: New text of the article
         * @param $summary String: Edit summary
         * @param $minoredit Boolean: Minor edit
-        * @param $timestamp_of_pagechange Timestamp associated with the page change
+        * @param $timestamp_of_pagechange String timestamp associated with the page change
         * @param $newid Integer: rev_id value of the new revision
         * @param $changed Boolean: Whether or not the content actually changed
+        * @param $user User object: User doing the edit
         */
-       public function editUpdates( $text, $summary, $minoredit, $timestamp_of_pagechange, $newid, $changed = true ) {
-               global $wgDeferredUpdateList, $wgMessageCache, $wgUser, $wgEnableParserCache;
+       public function editUpdates( $text, $summary, $minoredit, $timestamp_of_pagechange, $newid, $changed = true, User $user = null ) {
+               global $wgDeferredUpdateList, $wgUser, $wgEnableParserCache;
 
                wfProfileIn( __METHOD__ );
 
@@ -3627,7 +3077,7 @@ class Article {
                # Be careful not to double-PST: $text is usually already PST-ed once
                if ( !$this->mPreparedEdit || $this->mPreparedEdit->output->getFlag( 'vary-revision' ) ) {
                        wfDebug( __METHOD__ . ": No prepared edit or vary-revision is set...\n" );
-                       $editInfo = $this->prepareTextForEdit( $text, $newid );
+                       $editInfo = $this->prepareTextForEdit( $text, $newid, $user );
                } else {
                        wfDebug( __METHOD__ . ": No vary-revision, using prepared edit...\n" );
                        $editInfo = $this->mPreparedEdit;
@@ -3653,10 +3103,11 @@ class Article {
 
                                $dbw = wfGetDB( DB_MASTER );
                                $cutoff = $dbw->timestamp( time() - $wgRCMaxAge );
-                               $recentchanges = $dbw->tableName( 'recentchanges' );
-                               $sql = "DELETE FROM $recentchanges WHERE rc_timestamp < '{$cutoff}'";
-
-                               $dbw->query( $sql );
+                               $dbw->delete(
+                                       'recentchanges',
+                                       array( "rc_timestamp < '$cutoff'" ),
+                                       __METHOD__
+                               );
                        }
                }
 
@@ -3697,7 +3148,7 @@ class Article {
                }
 
                if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
-                       $wgMessageCache->replace( $shortTitle, $text );
+                       MessageCache::singleton()->replace( $shortTitle, $text );
                }
 
                wfProfileOut( __METHOD__ );
@@ -3841,8 +3292,7 @@ class Article {
                # Show user links if allowed to see them. If hidden, then show them only if requested...
                $userlinks = $sk->revUserTools( $revision, !$unhide );
 
-               $m = wfMsg( 'revision-info-current' );
-               $infomsg = $current && !wfEmptyMsg( 'revision-info-current', $m ) && $m != '-'
+               $infomsg = $current && !wfMessage( 'revision-info-current' )->isDisabled()
                        ? 'revision-info-current'
                        : 'revision-info';
 
@@ -3861,7 +3311,7 @@ class Article {
                        "\n\t\t\t\t<div id=\"mw-revision-nav\">" . $cdel . wfMsgExt( 'revision-nav', array( 'escapenoentities', 'parsemag', 'replaceafter' ),
                        $prevdiff, $prevlink, $lnk, $curdiff, $nextlink, $nextdiff ) . "</div>\n\t\t\t";
 
-               $wgOut->setSubtitle( $r );
+               $wgOut->addHTML( $r );
        }
 
        /**
@@ -3869,13 +3319,26 @@ class Article {
         * so we can do things like signatures and links-in-context.
         *
         * @param $text String article contents
+        * @param $user User object: user doing the edit, $wgUser will be used if
+        *              null is given
+        * @param $popts ParserOptions object: parser options, default options for
+        *               the user loaded if null given
         * @return string article contents with altered wikitext markup (signatures
         *      converted, {{subst:}}, templates, etc.)
         */
-       public function preSaveTransform( $text ) {
-               global $wgParser, $wgUser;
+       public function preSaveTransform( $text, User $user = null, ParserOptions $popts = null ) {
+               global $wgParser;
+
+               if ( $user === null ) {
+                       global $wgUser;
+                       $user = $wgUser;
+               }
+
+               if ( $popts === null ) {
+                       $popts = ParserOptions::newFromUser( $user );
+               }
 
-               return $wgParser->preSaveTransform( $text, $this->mTitle, $wgUser, ParserOptions::newFromUser( $wgUser ) );
+               return $wgParser->preSaveTransform( $text, $this->mTitle, $user, $popts );
        }
 
        /* Caching functions */
@@ -3995,7 +3458,7 @@ class Article {
                wfProfileOut( __METHOD__ );
        }
 
-       /**#@+
+       /**
         * The onArticle*() functions are supposed to be a kind of hooks
         * which should be called whenever any of the specified actions
         * are done.
@@ -4004,7 +3467,7 @@ class Article {
         *
         * This is called on page move and undelete, as well as edit
         *
-        * @param $title a title object
+        * @param $title Title object
         */
        public static function onArticleCreate( $title ) {
                # Update existence markers on article/talk tabs...
@@ -4026,8 +3489,6 @@ class Article {
         * Clears caches when article is deleted
         */
        public static function onArticleDelete( $title ) {
-               global $wgMessageCache;
-
                # Update existence markers on article/talk tabs...
                if ( $title->isTalkPage() ) {
                        $other = $title->getSubjectPage();
@@ -4046,7 +3507,7 @@ class Article {
 
                # Messages
                if ( $title->getNamespace() == NS_MEDIAWIKI ) {
-                       $wgMessageCache->replace( $title->getDBkey(), false );
+                       MessageCache::singleton()->replace( $title->getDBkey(), false );
                }
 
                # Images
@@ -4121,7 +3582,7 @@ class Article {
                        if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
                                // This doesn't quite make sense; the user is asking for
                                // information about the _page_, not the message... -- RC
-                               $wgOut->addHTML( htmlspecialchars( wfMsgWeirdKey( $this->mTitle->getText() ) ) );
+                               $wgOut->addHTML( htmlspecialchars( $this->mTitle->getDefaultMessageText() ) );
                        } else {
                                $msg = $wgUser->isLoggedIn()
                                        ? 'noarticletext'
@@ -4139,8 +3600,7 @@ class Article {
                                'watchlist',
                                'COUNT(*)',
                                $wl_clause,
-                               __METHOD__,
-                               $this->getSelectOptions() );
+                               __METHOD__ );
 
                        $pageInfo = $this->pageCountInfo( $page );
                        $talkInfo = $this->pageCountInfo( $page->getTalkPage() );
@@ -4184,15 +3644,13 @@ class Article {
                        'revision',
                        'COUNT(rev_page)',
                        $rev_clause,
-                       __METHOD__,
-                       $this->getSelectOptions()
+                       __METHOD__
                );
                $authors = $dbr->selectField(
                        'revision',
                        'COUNT(DISTINCT rev_user_text)',
                        $rev_clause,
-                       __METHOD__,
-                       $this->getSelectOptions()
+                       __METHOD__
                );
 
                return array( 'edits' => $edits, 'authors' => $authors );
@@ -4261,7 +3719,7 @@ class Article {
        * Return an applicable autosummary if one exists for the given edit.
        * @param $oldtext String: the previous text of the page.
        * @param $newtext String: The submitted text of the page.
-       * @param $flags Bitmask: a bitmask of flags submitted for the edit.
+       * @param $flags Int bitmask: a bitmask of flags submitted for the edit.
        * @return string An appropriate autosummary, or an empty string.
        */
        public static function getAutosummary( $oldtext, $newtext, $flags ) {
@@ -4369,23 +3827,15 @@ class Article {
 
        /**
         * Get parser options suitable for rendering the primary article wikitext
-        * @param $canonical boolean Determines that the generated must not depend on user preferences (see bug 14404)
         * @return mixed ParserOptions object or boolean false
         */
-       public function getParserOptions( $canonical = false ) {
-               global $wgUser, $wgLanguageCode;
-
-               if ( !$this->mParserOptions || $canonical ) {
-                       $user = !$canonical ? $wgUser : new User;
-                       $parserOptions = new ParserOptions( $user );
-                       $parserOptions->setTidy( true );
-                       $parserOptions->enableLimitReport();
-                       
-                       if ( $canonical ) {
-                               $parserOptions->setUserLang( $wgLanguageCode ); # Must be set explicitely
-                               return $parserOptions;
-                       }
-                       $this->mParserOptions = $parserOptions;
+       public function getParserOptions() {
+               global $wgUser;
+
+               if ( !$this->mParserOptions ) {
+                       $this->mParserOptions = new ParserOptions( $wgUser );
+                       $this->mParserOptions->setTidy( true );
+                       $this->mParserOptions->enableLimitReport();
                }
 
                // Clone to allow modifications of the return value without affecting
@@ -4515,7 +3965,7 @@ class Article {
         * @since 1.16 (r52326) for LiquidThreads
         *
         * @param $oldid mixed integer Revision ID or null
-        * @return ParserOutput
+        * @return ParserOutput or false if the given revsion ID is not found
         */
        public function getParserOutput( $oldid = null ) {
                global $wgEnableParserCache, $wgUser;
@@ -4532,31 +3982,50 @@ class Article {
                        wfIncrStats( 'pcache_miss_stub' );
                }
 
-               $parserOutput = false;
                if ( $useParserCache ) {
                        $parserOutput = ParserCache::singleton()->get( $this, $this->getParserOptions() );
+                       if ( $parserOutput !== false ) {
+                               return $parserOutput;
+                       }
                }
 
-               if ( $parserOutput === false ) {
-                       // Cache miss; parse and output it.
-                       $rev = Revision::newFromTitle( $this->getTitle(), $oldid );
-
-                       return $this->getOutputFromWikitext( $rev->getText(), $useParserCache );
+               // Cache miss; parse and output it.
+               if ( $oldid === null ) {
+                       $text = $this->getRawText();
                } else {
-                       return $parserOutput;
+                       $rev = Revision::newFromTitle( $this->getTitle(), $oldid );
+                       if ( $rev === null ) {
+                               return false;
+                       }
+                       $text = $rev->getText();
                }
+
+               return $this->getOutputFromWikitext( $text, $useParserCache );
        }
 
-       // Deprecated methods
        /**
-        * Get the database which should be used for reads
+        * Sets the context this Article is executed in
         *
-        * @return Database
-        * @deprecated - just call wfGetDB( DB_MASTER ) instead
+        * @param $context RequestContext
+        * @since 1.18
         */
-       function getDB() {
-               wfDeprecated( __METHOD__ );
-               return wfGetDB( DB_MASTER );
+       public function setContext( $context ) {
+               $this->mContext = $context;
+       }
+
+       /**
+        * Gets the context this Article is executed in
+        *
+        * @return RequestContext
+        * @since 1.18
+        */
+       public function getContext() {
+               if ( $this->mContext instanceof RequestContext ) {
+                       return $this->mContext;
+               } else {
+                       wfDebug( __METHOD__ . " called and \$mContext is null. Return RequestContext::getMain(); for sanity\n" );
+                       return RequestContext::getMain();
+               }
        }
 
 }