Implement the RequestContext class. Some credit to IAlex, ;) other credit for me...
[lhc/web/wiklou.git] / includes / OutputPage.php
index ec6748b..60057b5 100644 (file)
@@ -5,16 +5,16 @@ if ( !defined( 'MEDIAWIKI' ) ) {
 
 /**
  * This class should be covered by a general architecture document which does
- * not exist as of january 2011.  This is one of the Core class and should
+ * not exist as of January 2011.  This is one of the Core classes and should
  * be read at least once by any new developers.
  *
  * This class is used to prepare the final rendering. A skin is then
  * applied to the output parameters (links, javascript, html, categories ...).
  * 
- * Another class (fixme) handle sending the whole page to the client.
+ * Another class (fixme) handles sending the whole page to the client.
  * 
  * Some comments comes from a pairing session between Zak Greant and Ashar Voultoiz
- * in november 2010.
+ * in November 2010.
  *
  * @todo document
  */
@@ -37,7 +37,7 @@ class OutputPage {
        var $mBodytext = '';
 
        /**
-        * Holds the debug lines that will be outputted as comments in page source if
+        * Holds the debug lines that will be output as comments in page source if
         * $wgDebugComments is enabled. See also $wgShowDebug.
         * TODO: make a getter method for this
         */
@@ -68,7 +68,7 @@ class OutputPage {
 
        /**
         * mLastModified and mEtag are used for sending cache control.
-        * The whole caching system should probably be moved in its own class.
+        * The whole caching system should probably be moved into its own class.
         */
        var $mLastModified = '';
 
@@ -76,8 +76,8 @@ class OutputPage {
         * Should be private. No getter but used in sendCacheControl();
         * Contains an HTTP Entity Tags (see RFC 2616 section 3.13) which is used
         * as a unique identifier for the content. It is later used by the client
-        * to compare its cache version with the server version. Client sends
-        * headers If-Match and If-None-Match containing its local cache ETAG value.
+        * to compare its cached version with the server version. Client sends
+        * headers If-Match and If-None-Match containing its locally cached ETAG value.
         *
         * To get more information, you will have to look at HTTP1/1 protocols which
         * is properly described in RFC 2616 : http://tools.ietf.org/html/rfc2616
@@ -87,7 +87,7 @@ class OutputPage {
        var $mCategoryLinks = array();
        var $mCategories = array();
 
-       /// Should be private. Associative array mapping language code to the page name
+       /// Should be private. Array of Interwiki Prefixed (non DB key) Titles (e.g. 'fr:Test page')
        var $mLanguageLinks = array();
 
        /**
@@ -123,17 +123,14 @@ class OutputPage {
        var $mInlineMsg = array();
 
        var $mTemplateIds = array();
+       var $mImageTimeKeys = array();
 
-       /** Initialized with a global value. Let us override it.
-        *  Should probably get deleted / rewritten ... */
-       var $mAllowUserJs;
-
-       /**
-        * This was for the old skins and for users with 640x480 screen.
-        * Please note old skins are still used and might prove useful for
-        * users having old computers or visually impaired.
-        */
-       var $mSuppressQuickbar = false;
+       # What level of 'untrustworthiness' is allowed in CSS/JS modules loaded on this page?
+       # @see ResourceLoaderModule::$origin
+       # ResourceLoaderModule::ORIGIN_ALL is assumed unless overridden;
+       protected $mAllowedModules = array(
+               ResourceLoaderModule::TYPE_COMBINED => ResourceLoaderModule::ORIGIN_ALL,
+       );
 
        /**
         * @EasterEgg I just love the name for this self documenting variable.
@@ -196,6 +193,9 @@ class OutputPage {
        /// Stores a Title object (of the current page).
        protected $mTitle = null;
 
+       /// Stores a User object (the one the page is being rendered for)
+       protected $mUser = null;
+
        /**
         * An array of stylesheet filenames (relative from skins path), with options
         * for CSS media, IE conditions, and RTL/LTR direction.
@@ -218,15 +218,6 @@ class OutputPage {
                'Cookie' => null
        );
 
-       /**
-        * Constructor
-        * Initialise private variables
-        */
-       function __construct() {
-               global $wgAllowUserJs;
-               $this->mAllowUserJs = $wgAllowUserJs;
-       }
-
        /**
         * Redirect to $url rather than displaying the normal page
         *
@@ -298,11 +289,24 @@ class OutputPage {
         *                 "rel" attribute will be automatically added
         */
        function addMetadataLink( $linkarr ) {
+               $linkarr['rel'] = $this->getMetadataAttribute();
+               $this->addLink( $linkarr );
+       }
+
+       /**
+        * Get the value of the "rel" attribute for metadata links
+        *
+        * @return String
+        */
+       private function getMetadataAttribute() {
                # note: buggy CC software only reads first "meta" link
                static $haveMeta = false;
-               $linkarr['rel'] = $haveMeta ? 'alternate meta' : 'meta';
-               $this->addLink( $linkarr );
-               $haveMeta = true;
+               if ( $haveMeta ) {
+                       return 'alternate meta';
+               } else {
+                       $haveMeta = true;
+                       return 'meta';
+               }
        }
 
        /**
@@ -373,13 +377,37 @@ class OutputPage {
                return $this->mScripts . $this->getHeadItems();
        }
 
+       /**
+        * Filter an array of modules to remove insufficiently trustworthy members, and modules
+        * which are no longer registered (eg a page is cached before an extension is disabled)
+        * @param $modules Array
+        * @return Array
+        */
+       protected function filterModules( $modules, $type = ResourceLoaderModule::TYPE_COMBINED ){
+               $resourceLoader = $this->getResourceLoader();
+               $filteredModules = array();
+               foreach( $modules as $val ){
+                       $module = $resourceLoader->getModule( $val );
+                       if( $module instanceof ResourceLoaderModule
+                               && $module->getOrigin() <= $this->getAllowedModules( $type ) )
+                       {
+                               $filteredModules[] = $val;
+                       }
+               }
+               return $filteredModules;
+       }
+
        /**
         * Get the list of modules to include on this page
         *
+        * @param $filter Bool whether to filter out insufficiently trustworthy modules
         * @return Array of module names
         */
-       public function getModules() {
-               return array_values( array_unique( $this->mModules ) );
+       public function getModules( $filter = false, $param = 'mModules' ) {
+               $modules = array_values( array_unique( $this->$param ) );
+               return $filter
+                       ? $this->filterModules( $modules )
+                       : $modules;
        }
 
        /**
@@ -397,8 +425,8 @@ class OutputPage {
         * Get the list of module JS to include on this page
         * @return array of module names
         */
-       public function getModuleScripts() {
-               return array_values( array_unique( $this->mModuleScripts ) );
+       public function getModuleScripts( $filter = false ) {
+               return $this->getModules( $filter, 'mModuleScripts' );
        }
 
        /**
@@ -417,8 +445,8 @@ class OutputPage {
         *
         * @return Array of module names
         */
-       public function getModuleStyles() {
-               return array_values( array_unique( $this->mModuleStyles ) );
+       public function getModuleStyles( $filter = false ) {
+               return $this->getModules( $filter, 'mModuleStyles' );
        }
 
        /**
@@ -437,8 +465,8 @@ class OutputPage {
         *
         * @return Array of module names
         */
-       public function getModuleMessages() {
-               return array_values( array_unique( $this->mModuleMessages ) );
+       public function getModuleMessages( $filter = false ) {
+               return $this->getModules( $filter, 'mModuleMessages' );
        }
 
        /**
@@ -524,7 +552,7 @@ class OutputPage {
         * @return Boolean: true iff cache-ok headers was sent.
         */
        public function checkLastModified( $timestamp ) {
-               global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
+               global $wgCachePages, $wgCacheEpoch, $wgRequest;
 
                if ( !$timestamp || $timestamp == '19700101000000' ) {
                        wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
@@ -534,7 +562,7 @@ class OutputPage {
                        wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
                        return false;
                }
-               if( $wgUser->getOption( 'nocache' ) ) {
+               if( $this->getUser()->getOption( 'nocache' ) ) {
                        wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
                        return false;
                }
@@ -542,7 +570,7 @@ class OutputPage {
                $timestamp = wfTimestamp( TS_MW, $timestamp );
                $modifiedTimes = array(
                        'page' => $timestamp,
-                       'user' => $wgUser->getTouched(),
+                       'user' => $this->getUser()->getTouched(),
                        'epoch' => $wgCacheEpoch
                );
                wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
@@ -723,13 +751,35 @@ class OutputPage {
                return $this->mPagetitle;
        }
 
+       /**
+        * Set the RequestContext used in this instance
+        *
+        * @param RequestContext $context
+        */
+       public function setContext( RequestContext $context ) {
+               $this->mContext = $context;
+       }
+
+       /**
+        * Get the RequestContext used in this instance
+        *
+        * @return RequestContext
+        */
+       public function getContext() {
+               if ( !isset($this->mContext) ) {
+                       wfDebug( __METHOD__ . " called and \$mContext is null. Using RequestContext::getMain(); for sanity\n" );
+                       $this->mContext = RequestContext::getMain();
+               }
+               return $this->mContext;
+       }
+
        /**
         * Set the Title object to use
         *
         * @param $t Title object
         */
        public function setTitle( $t ) {
-               $this->mTitle = $t;
+               $this->getContext()->setTitle($t);
        }
 
        /**
@@ -738,13 +788,27 @@ class OutputPage {
         * @return Title
         */
        public function getTitle() {
-               if ( $this->mTitle instanceof Title ) {
-                       return $this->mTitle;
-               } else {
-                       wfDebug( __METHOD__ . " called and \$mTitle is null. Return \$wgTitle for sanity\n" );
-                       global $wgTitle;
-                       return $wgTitle;
-               }
+               return $this->getContext()->getTitle();
+       }
+
+       /**
+        * Get the User object used in this instance
+        *
+        * @return User
+        * @since 1.18
+        */
+       public function getUser() {
+               return $this->getContext()->getUser();
+       }
+
+       /**
+        * Get the Skin object used to render this instance
+        *
+        * @return Skin
+        * @since 1.18
+        */
+       public function getSkin() {
+               return $this->getContext()->getSkin();
        }
 
        /**
@@ -972,7 +1036,7 @@ class OutputPage {
        /**
         * Get the list of language links
         *
-        * @return Associative array mapping language code to the page name
+        * @return Array of Interwiki Prefixed (non DB key) Titles (e.g. 'fr:Test page')
         */
        public function getLanguageLinks() {
                return $this->mLanguageLinks;
@@ -981,10 +1045,10 @@ class OutputPage {
        /**
         * Add an array of categories, with names in the keys
         *
-        * @param $categories Associative array mapping category name to its sort key
+        * @param $categories Array mapping category name => sort key
         */
        public function addCategoryLinks( $categories ) {
-               global $wgUser, $wgContLang;
+               global $wgContLang;
 
                if ( !is_array( $categories ) || count( $categories ) == 0 ) {
                        return;
@@ -1002,7 +1066,7 @@ class OutputPage {
                        $lb->constructSet( 'page', $dbr ),
                        __METHOD__,
                        array(),
-                       array( 'page_props' => array( 'LEFT JOIN', array( 'pp_propname' => 'hiddencat', 'pp_page = page_id' ) )
+                       array( 'page_props' => array( 'LEFT JOIN', array( 'pp_propname' => 'hiddencat', 'pp_page = page_id' ) ) )
                );
 
                # Add the results to the link cache
@@ -1023,7 +1087,6 @@ class OutputPage {
 
                # Add the remaining categories to the skin
                if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
-                       $sk = $wgUser->getSkin();
                        foreach ( $categories as $category => $type ) {
                                $origcategory = $category;
                                $title = Title::makeTitleSafe( NS_CATEGORY, $category );
@@ -1035,7 +1098,7 @@ class OutputPage {
                                }
                                $text = $wgContLang->convertHtml( $title->getText() );
                                $this->mCategories[] = $title->getText();
-                               $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
+                               $this->mCategoryLinks[$type][] = $this->getSkin()->link( $title, $text );
                        }
                }
        }
@@ -1043,7 +1106,7 @@ class OutputPage {
        /**
         * Reset the category links (but not the category list) and add $categories
         *
-        * @param $categories Associative array mapping category name to its sort key
+        * @param $categories Array mapping category name => sort key
         */
        public function setCategoryLinks( $categories ) {
                $this->mCategoryLinks = array();
@@ -1072,36 +1135,58 @@ class OutputPage {
        }
 
        /**
-        * Suppress the quickbar from the output, only for skin supporting
-        * the quickbar
+        * Do not allow scripts which can be modified by wiki users to load on this page;
+        * only allow scripts bundled with, or generated by, the software.
         */
-       public function suppressQuickbar() {
-               $this->mSuppressQuickbar = true;
+       public function disallowUserJs() {
+               $this->reduceAllowedModules(
+                       ResourceLoaderModule::TYPE_SCRIPTS,
+                       ResourceLoaderModule::ORIGIN_CORE_INDIVIDUAL
+               );
        }
 
        /**
-        * Return whether the quickbar should be suppressed from the output
-        *
+        * Return whether user JavaScript is allowed for this page
+        * @deprecated since 1.18 Load modules with ResourceLoader, and origin and
+        *     trustworthiness is identified and enforced automagically. 
         * @return Boolean
         */
-       public function isQuickbarSuppressed() {
-               return $this->mSuppressQuickbar;
+       public function isUserJsAllowed() {
+               return $this->getAllowedModules( ResourceLoaderModule::TYPE_SCRIPTS ) >= ResourceLoaderModule::ORIGIN_USER_INDIVIDUAL;
        }
 
        /**
-        * Remove user JavaScript from scripts to load
+        * Show what level of JavaScript / CSS untrustworthiness is allowed on this page
+        * @see ResourceLoaderModule::$origin
+        * @param $type String ResourceLoaderModule TYPE_ constant
+        * @return Int ResourceLoaderModule ORIGIN_ class constant
         */
-       public function disallowUserJs() {
-               $this->mAllowUserJs = false;
+       public function getAllowedModules( $type ){
+               if( $type == ResourceLoaderModule::TYPE_COMBINED ){
+                       return min( array_values( $this->mAllowedModules ) );
+               } else {
+                       return isset( $this->mAllowedModules[$type] )
+                               ? $this->mAllowedModules[$type]
+                               : ResourceLoaderModule::ORIGIN_ALL;
+               }
        }
 
        /**
-        * Return whether user JavaScript is allowed for this page
-        *
-        * @return Boolean
+        * Set the highest level of CSS/JS untrustworthiness allowed
+        * @param  $type String ResourceLoaderModule TYPE_ constant
+        * @param  $level Int ResourceLoaderModule class constant
         */
-       public function isUserJsAllowed() {
-               return $this->mAllowUserJs;
+       public function setAllowedModules( $type, $level ){
+               $this->mAllowedModules[$type] = $level;
+       }
+
+       /**
+        * As for setAllowedModules(), but don't inadvertantly make the page more accessible
+        * @param  $type String
+        * @param  $level Int ResourceLoaderModule class constant
+        */
+       public function reduceAllowedModules( $type, $level ){
+               $this->mAllowedModules[$type] = min( $this->getAllowedModules($type), $level );
        }
 
        /**
@@ -1152,7 +1237,7 @@ class OutputPage {
         *
         * @param $options either the ParserOption to use or null to only get the
         *                 current ParserOption object
-        * @return current ParserOption object
+        * @return ParserOptions object
         */
        public function parserOptions( $options = null ) {
                if ( !$this->mParserOptions ) {
@@ -1182,6 +1267,24 @@ class OutputPage {
                return $this->mRevisionId;
        }
 
+       /**
+        * Get the templates used on this page
+        *
+        * @return Array (namespace => dbKey => revId)
+        */
+       public function getTemplateIds() {
+               return $this->mTemplateIds;
+       }
+
+       /**
+        * Get the files used on this page
+        *
+        * @return Array (dbKey => array('time' => MW timestamp or null, 'sha1' => sha1 or ''))
+        */
+       public function getImageTimeKeys() {
+               return $this->mImageTimeKeys;
+       }
+
        /**
         * Convert wikitext to HTML and add it to the buffer
         * Default assumes that the current page title will be used.
@@ -1275,14 +1378,19 @@ class OutputPage {
                $this->mNoGallery = $parserOutput->getNoGallery();
                $this->mHeadItems = array_merge( $this->mHeadItems, $parserOutput->getHeadItems() );
                $this->addModules( $parserOutput->getModules() );
-               // Versioning...
-               foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
+
+               // Template versioning...
+               foreach ( (array)$parserOutput->getTemplateIds() as $ns => $dbks ) {
                        if ( isset( $this->mTemplateIds[$ns] ) ) {
                                $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
                        } else {
                                $this->mTemplateIds[$ns] = $dbks;
                        }
                }
+               // File versioning...
+               foreach ( (array)$parserOutput->getImageTimeKeys() as $dbk => $data ) {
+                       $this->mImageTimeKeys[$dbk] = $data;
+               }
 
                // Hooks registered in the object
                global $wgParserOutputHooks;
@@ -1471,7 +1579,7 @@ class OutputPage {
         * Add an HTTP header that will influence on the cache
         *
         * @param $header String: header name
-        * @param $option either an Array or null
+        * @param $option Array|null
         * @fixme Document the $option parameter; it appears to be for
         *        X-Vary-Options but what format is acceptable?
         */
@@ -1716,105 +1824,66 @@ class OutputPage {
         * the object, let's actually output it:
         */
        public function output() {
-               global $wgUser, $wgOutputEncoding, $wgRequest;
+               global $wgOutputEncoding, $wgRequest;
                global $wgLanguageCode, $wgDebugRedirects, $wgMimeType;
-               global $wgUseAjax, $wgAjaxWatch;
-               global $wgEnableMWSuggest, $wgUniversalEditButton;
 
                if( $this->mDoNothing ) {
                        return;
                }
+
                wfProfileIn( __METHOD__ );
+
+               $response = $wgRequest->response();
+
                if ( $this->mRedirect != '' ) {
                        # Standards require redirect URLs to be absolute
                        $this->mRedirect = wfExpandUrl( $this->mRedirect );
                        if( $this->mRedirectCode == '301' || $this->mRedirectCode == '303' ) {
                                if( !$wgDebugRedirects ) {
                                        $message = self::getStatusMessage( $this->mRedirectCode );
-                                       $wgRequest->response()->header( "HTTP/1.1 {$this->mRedirectCode} $message" );
+                                       $response->header( "HTTP/1.1 {$this->mRedirectCode} $message" );
                                }
                                $this->mLastModified = wfTimestamp( TS_RFC2822 );
                        }
                        $this->sendCacheControl();
 
-                       $wgRequest->response()->header( "Content-Type: text/html; charset=utf-8" );
+                       $response->header( "Content-Type: text/html; charset=utf-8" );
                        if( $wgDebugRedirects ) {
                                $url = htmlspecialchars( $this->mRedirect );
                                print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
                                print "<p>Location: <a href=\"$url\">$url</a></p>\n";
                                print "</body>\n</html>\n";
                        } else {
-                               $wgRequest->response()->header( 'Location: ' . $this->mRedirect );
+                               $response->header( 'Location: ' . $this->mRedirect );
                        }
                        wfProfileOut( __METHOD__ );
                        return;
                } elseif ( $this->mStatusCode ) {
                        $message = self::getStatusMessage( $this->mStatusCode );
                        if ( $message ) {
-                               $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $message );
-                       }
-               }
-
-               $sk = $wgUser->getSkin();
-
-               // Add base resources
-               $this->addModules( array( 'mediawiki.legacy.wikibits', 'mediawiki.util' ) );
-
-               // Add various resources if required
-               if ( $wgUseAjax ) {
-                       $this->addModules( 'mediawiki.legacy.ajax' );
-
-                       wfRunHooks( 'AjaxAddScript', array( &$this ) );
-
-                       if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
-                               $this->addModules( 'mediawiki.action.watch.ajax' );
-                       }
-
-                       if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ) {
-                               $this->addModules( 'mediawiki.legacy.mwsuggest' );
+                               $response->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $message );
                        }
                }
 
-               if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
-                       $this->addModules( 'mediawiki.action.view.rightClickEdit' );
-               }
-
-               if( $wgUniversalEditButton ) {
-                       if( $this->isArticleRelated() && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
-                               && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
-                               // Original UniversalEditButton
-                               $msg = wfMsg( 'edit' );
-                               $this->addLink( array(
-                                       'rel' => 'alternate',
-                                       'type' => 'application/x-wiki',
-                                       'title' => $msg,
-                                       'href' => $this->getTitle()->getLocalURL( 'action=edit' )
-                               ) );
-                               // Alternate edit link
-                               $this->addLink( array(
-                                       'rel' => 'edit',
-                                       'title' => $msg,
-                                       'href' => $this->getTitle()->getLocalURL( 'action=edit' )
-                               ) );
-                       }
-               }
-
-
                # Buffer output; final headers may depend on later processing
                ob_start();
 
-               $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
-               $wgRequest->response()->header( 'Content-language: ' . $wgLanguageCode );
+               $response->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
+               $response->header( 'Content-language: ' . $wgLanguageCode );
 
                // Prevent framing, if requested
                $frameOptions = $this->getFrameOptions();
                if ( $frameOptions ) {
-                       $wgRequest->response()->header( "X-Frame-Options: $frameOptions" );
+                       $response->header( "X-Frame-Options: $frameOptions" );
                }
 
                if ( $this->mArticleBodyOnly ) {
                        $this->out( $this->mBodytext );
                } else {
+                       $this->addDefaultModules();
+
+                       $sk = $this->getSkin( $this->getTitle() );
+
                        // Hook that allows last minute changes to the output page, e.g.
                        // adding of CSS or Javascript by extensions.
                        wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
@@ -1855,49 +1924,29 @@ class OutputPage {
         * @return nothing
         */
        function blockedPage( $return = true ) {
-               global $wgUser, $wgContLang, $wgLang;
+               global $wgContLang, $wgLang;
 
                $this->setPageTitle( wfMsg( 'blockedtitle' ) );
                $this->setRobotPolicy( 'noindex,nofollow' );
                $this->setArticleRelated( false );
 
-               $name = User::whoIs( $wgUser->blockedBy() );
-               $reason = $wgUser->blockedFor();
+               $name = $this->getUser()->blockedBy();
+               $reason = $this->getUser()->blockedFor();
                if( $reason == '' ) {
                        $reason = wfMsg( 'blockednoreason' );
                }
                $blockTimestamp = $wgLang->timeanddate(
-                       wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true
+                       wfTimestamp( TS_MW, $this->getUser()->mBlock->mTimestamp ), true
                );
                $ip = wfGetIP();
 
                $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
 
-               $blockid = $wgUser->mBlock->mId;
+               $blockid = $this->getUser()->mBlock->getId();
 
-               $blockExpiry = $wgUser->mBlock->mExpiry;
-               if ( $blockExpiry == 'infinity' ) {
-                       // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
-                       // Search for localization in 'ipboptions'
-                       $scBlockExpiryOptions = wfMsg( 'ipboptions' );
-                       foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
-                               if ( strpos( $option, ':' ) === false ) {
-                                       continue;
-                               }
-                               list( $show, $value ) = explode( ':', $option );
-                               if ( $value == 'infinite' || $value == 'indefinite' ) {
-                                       $blockExpiry = $show;
-                                       break;
-                               }
-                       }
-               } else {
-                       $blockExpiry = $wgLang->timeanddate(
-                               wfTimestamp( TS_MW, $blockExpiry ),
-                               true
-                       );
-               }
+               $blockExpiry = $wgLang->formatExpiry( $this->getUser()->mBlock->mExpiry );
 
-               if ( $wgUser->mBlock->mAuto ) {
+               if ( $this->getUser()->mBlock->mAuto ) {
                        $msg = 'autoblockedtext';
                } else {
                        $msg = 'blockedtext';
@@ -1905,7 +1954,7 @@ class OutputPage {
 
                /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
                 * This could be a username, an IP range, or a single IP. */
-               $intended = $wgUser->mBlock->mAddress;
+               $intended = $this->getUser()->mBlock->getTarget();
 
                $this->addWikiMsg(
                        $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry,
@@ -2011,29 +2060,25 @@ class OutputPage {
         * Produce the stock "please login to use the wiki" page
         */
        public function loginToUse() {
-               global $wgUser;
-
-               if( $wgUser->isLoggedIn() ) {
+               if( $this->getUser()->isLoggedIn() ) {
                        $this->permissionRequired( 'read' );
                        return;
                }
 
-               $skin = $wgUser->getSkin();
-
                $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
                $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
                $this->setRobotPolicy( 'noindex,nofollow' );
                $this->setArticleRelated( false );
 
                $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
-               $loginLink = $skin->link(
+               $loginLink = $this->getSkin()->link(
                        $loginTitle,
                        wfMsgHtml( 'loginreqlink' ),
                        array(),
                        array( 'returnto' => $this->getTitle()->getPrefixedText() ),
                        array( 'known', 'noclasses' )
                );
-               $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
+               $this->addWikiMsgArray( 'loginreqpagetext', array( $loginLink ), array( 'replaceafter' ) );
                $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . '-->' );
 
                # Don't return to the main page if the user can't read it
@@ -2047,7 +2092,7 @@ class OutputPage {
        /**
         * Format a list of error messages
         *
-        * @param $errors An array of arrays returned by Title::getUserPermissionsErrors
+        * @param $errors Array of arrays returned by Title::getUserPermissionsErrors
         * @param $action String: action that was denied or null if unknown
         * @return String: the wikitext error-messages, formatted into a list.
         */
@@ -2102,9 +2147,6 @@ class OutputPage {
         * @param $action    String: action that was denied or null if unknown
         */
        public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
-               global $wgUser;
-               $skin = $wgUser->getSkin();
-
                $this->setRobotPolicy( 'noindex,nofollow' );
                $this->setArticleRelated( false );
 
@@ -2119,7 +2161,7 @@ class OutputPage {
                        if( $source ) {
                                $this->setPageTitle( wfMsg( 'viewsource' ) );
                                $this->setSubtitle(
-                                       wfMsg( 'viewsourcefor', $skin->linkKnown( $this->getTitle() ) )
+                                       wfMsg( 'viewsourcefor', $this->getSkin()->linkKnown( $this->getTitle() ) )
                                );
                        } else {
                                $this->setPageTitle( wfMsg( 'badaccess' ) );
@@ -2139,14 +2181,14 @@ class OutputPage {
                        $params = array(
                                'id'   => 'wpTextbox1',
                                'name' => 'wpTextbox1',
-                               'cols' => $wgUser->getOption( 'cols' ),
-                               'rows' => $wgUser->getOption( 'rows' ),
+                               'cols' => $this->getUser()->getOption( 'cols' ),
+                               'rows' => $this->getUser()->getOption( 'rows' ),
                                'readonly' => 'readonly'
                        );
                        $this->addHTML( Html::element( 'textarea', $params, $source ) );
 
                        // Show templates used by this article
-                       $skin = $wgUser->getSkin();
+                       $skin = $this->getSkin();
                        $article = new Article( $this->getTitle() );
                        $this->addHTML( "<div class='templatesUsed'>
 {$skin->formatTemplates( $article->getUsedTemplates() )}
@@ -2220,11 +2262,10 @@ class OutputPage {
         * @param $text String text of the link (input is not escaped)
         */
        public function addReturnTo( $title, $query = array(), $text = null ) {
-               global $wgUser;
                $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullURL() ) );
                $link = wfMsgHtml(
                        'returnto',
-                       $wgUser->getSkin()->link( $title, $text, array(), $query )
+                       $this->getSkin()->link( $title, $text, array(), $query )
                );
                $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
        }
@@ -2272,14 +2313,15 @@ class OutputPage {
        public function headElement( Skin $sk, $includeStyle = true ) {
                global $wgOutputEncoding, $wgMimeType;
                global $wgUseTrackbacks, $wgHtml5;
-               global $wgUser, $wgRequest, $wgLang;
+               global $wgRequest, $wgLang;
 
                if ( $sk->commonPrintStylesheet() ) {
                        $this->addModuleStyles( 'mediawiki.legacy.wikiprintable' );
                }
                $sk->setupUserCss( $this );
 
-               $ret = Html::htmlHeader( array( 'lang' => wfUILang()->getCode() ) );
+               $lang = wfUILang();
+               $ret = Html::htmlHeader( array( 'lang' => $lang->getCode(), 'dir' => $lang->getDir() ) );
 
                if ( $this->getHTMLTitle() == '' ) {
                        $this->setHTMLTitle( wfMsg( 'pagetitle', $this->getPageTitle() ) );
@@ -2291,18 +2333,10 @@ class OutputPage {
                        $ret .= "$openHead\n";
                }
 
-               if ( $wgHtml5 ) {
-                       # More succinct than <meta http-equiv=Content-Type>, has the
-                       # same effect
-                       $ret .= Html::element( 'meta', array( 'charset' => $wgOutputEncoding ) ) . "\n";
-               } else {
-                       $this->addMeta( 'http:Content-Type', "$wgMimeType; charset=$wgOutputEncoding" );
-               }
-
                $ret .= Html::element( 'title', null, $this->getHTMLTitle() ) . "\n";
 
                $ret .= implode( "\n", array(
-                       $this->getHeadLinks( $sk ),
+                       $this->getHeadLinks( $sk, true ),
                        $this->buildCssLinks( $sk ),
                        $this->getHeadItems()
                ) );
@@ -2323,8 +2357,8 @@ class OutputPage {
 
                if (
                        $this->getTitle()->getNamespace() != NS_SPECIAL &&
-                       !in_array( $action, array( 'edit', 'submit' ) ) &&
-                       $wgUser->getOption( 'editondblclick' )
+                       in_array( $action, array( 'view', 'purge' ) ) &&
+                       $this->getUser()->getOption( 'editondblclick' )
                )
                {
                        $bodyAttrs['ondblclick'] = "document.location = '" . Xml::escapeJsString( $this->getTitle()->getEditURL() ) . "'";
@@ -2338,16 +2372,8 @@ class OutputPage {
                        # A <body> class is probably not the best way to do this . . .
                        $bodyAttrs['class'] .= ' capitalize-all-nouns';
                }
-               $bodyAttrs['class'] .= ' ns-' . $this->getTitle()->getNamespace();
-               if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
-                       $bodyAttrs['class'] .= ' ns-special';
-               } elseif ( $this->getTitle()->isTalkPage() ) {
-                       $bodyAttrs['class'] .= ' ns-talk';
-               } else {
-                       $bodyAttrs['class'] .= ' ns-subject';
-               }
-               $bodyAttrs['class'] .= ' ' . Sanitizer::escapeClass( 'page-' . $this->getTitle()->getPrefixedText() );
-               $bodyAttrs['class'] .= ' skin-' . Sanitizer::escapeClass( $wgUser->getSkin()->getSkinName() );
+               $bodyAttrs['class'] .= ' ' . $sk->getPageClasses( $this->getTitle() );
+               $bodyAttrs['class'] .= ' skin-' . Sanitizer::escapeClass( $sk->getSkinName() );
 
                $sk->addToBodyAttributes( $this, $bodyAttrs ); // Allow skins to add body attributes they need
                wfRunHooks( 'OutputPageBodyAttributes', array( $this, $sk, &$bodyAttrs ) );
@@ -2357,8 +2383,43 @@ class OutputPage {
                return $ret;
        }
 
+       /**
+        * Add the default ResourceLoader modules to this object
+        */
+       private function addDefaultModules() {
+               global $wgIncludeLegacyJavaScript,
+                       $wgUseAjax, $wgAjaxWatch, $wgEnableMWSuggest;
+
+               // Add base resources
+               $this->addModules( 'mediawiki.util' );
+               if( $wgIncludeLegacyJavaScript ){
+                       $this->addModules( 'mediawiki.legacy.wikibits' );
+               }
+
+               // Add various resources if required
+               if ( $wgUseAjax ) {
+                       $this->addModules( 'mediawiki.legacy.ajax' );
+
+                       wfRunHooks( 'AjaxAddScript', array( &$this ) );
+
+                       if( $wgAjaxWatch && $this->getUser()->isLoggedIn() ) {
+                               $this->addModules( 'mediawiki.action.watch.ajax' );
+                       }
+
+                       if ( $wgEnableMWSuggest && !$this->getUser()->getOption( 'disablesuggest', false ) ) {
+                               $this->addModules( 'mediawiki.legacy.mwsuggest' );
+                       }
+               }
+
+               if( $this->getUser()->getBoolOption( 'editsectiononrightclick' ) ) {
+                       $this->addModules( 'mediawiki.action.view.rightClickEdit' );
+               }
+       }
+
        /**
         * Get a ResourceLoader object associated with this OutputPage
+        *
+        * @return ResourceLoader
         */
        public function getResourceLoader() {
                if ( is_null( $this->mResourceLoader ) ) {
@@ -2371,28 +2432,28 @@ class OutputPage {
         * TODO: Document
         * @param $skin Skin
         * @param $modules Array/string with the module name
-        * @param $only string May be styles, messages or scripts
+        * @param $only String ResourceLoaderModule TYPE_ class constant
         * @param $useESI boolean
         * @return string html <script> and <style> tags
         */
        protected function makeResourceLoaderLink( Skin $skin, $modules, $only, $useESI = false ) {
-               global $wgUser, $wgLang, $wgLoadScript, $wgResourceLoaderUseESI,
+               global $wgLang, $wgLoadScript, $wgResourceLoaderUseESI,
                        $wgResourceLoaderInlinePrivateModules, $wgRequest;
                // Lazy-load ResourceLoader
                // TODO: Should this be a static function of ResourceLoader instead?
                // TODO: Divide off modules starting with "user", and add the user parameter to them
-               $query = array(
+               $baseQuery = array(
                        'lang' => $wgLang->getCode(),
                        'debug' => ResourceLoader::inDebugMode() ? 'true' : 'false',
                        'skin' => $skin->getSkinName(),
                        'only' => $only,
                );
                // Propagate printable and handheld parameters if present
-               if ( $wgRequest->getBool( 'printable' ) ) {
-                       $query['printable'] = 1;
+               if ( $this->isPrintable() ) {
+                       $baseQuery['printable'] = 1;
                }
                if ( $wgRequest->getBool( 'handheld' ) ) {
-                       $query['handheld'] = 1;
+                       $baseQuery['handheld'] = 1;
                }
 
                if ( !count( $modules ) ) {
@@ -2420,23 +2481,50 @@ class OutputPage {
                $resourceLoader = $this->getResourceLoader();
                foreach ( (array) $modules as $name ) {
                        $module = $resourceLoader->getModule( $name );
+                       # Check that we're allowed to include this module on this page
+                       if ( ( $module->getOrigin() > $this->getAllowedModules( ResourceLoaderModule::TYPE_SCRIPTS )
+                                       && $only == ResourceLoaderModule::TYPE_SCRIPTS )
+                               || ( $module->getOrigin() > $this->getAllowedModules( ResourceLoaderModule::TYPE_STYLES )
+                                       && $only == ResourceLoaderModule::TYPE_STYLES )
+                               )
+                       {
+                               continue;
+                       }
+
                        $group = $module->getGroup();
                        if ( !isset( $groups[$group] ) ) {
                                $groups[$group] = array();
                        }
                        $groups[$group][$name] = $module;
                }
+
                $links = '';
                foreach ( $groups as $group => $modules ) {
-                       $query['modules'] = implode( '|', array_keys( $modules ) );
+                       $query = $baseQuery;
                        // Special handling for user-specific groups
-                       if ( ( $group === 'user' || $group === 'private' ) && $wgUser->isLoggedIn() ) {
-                               $query['user'] = $wgUser->getName();
+                       if ( ( $group === 'user' || $group === 'private' ) && $this->getUser()->isLoggedIn() ) {
+                               $query['user'] = $this->getUser()->getName();
                        }
+                       
+                       // Create a fake request based on the one we are about to make so modules return
+                       // correct timestamp and emptiness data
+                       $context = new ResourceLoaderContext( $resourceLoader, new FauxRequest( $query ) );
+                       // Drop modules that know they're empty
+                       foreach ( $modules as $key => $module ) {
+                               if ( $module->isKnownEmpty( $context ) ) {
+                                       unset( $modules[$key] );
+                               }
+                       }
+                       // If there are no modules left, skip this group
+                       if ( $modules === array() ) {
+                               continue;
+                       }
+                       
+                       $query['modules'] = implode( '|', array_keys( $modules ) );
+                       
                        // Support inlining of private modules if configured as such
                        if ( $group === 'private' && $wgResourceLoaderInlinePrivateModules ) {
-                               $context = new ResourceLoaderContext( $resourceLoader, new FauxRequest( $query ) );
-                               if ( $only == 'styles' ) {
+                               if ( $only == ResourceLoaderModule::TYPE_STYLES ) {
                                        $links .= Html::inlineStyle(
                                                $resourceLoader->makeModuleResponse( $context, $modules )
                                        );
@@ -2449,20 +2537,19 @@ class OutputPage {
                                }
                                continue;
                        }
-                       // Special handling for user and site groups; because users might change their stuff
-                       // on-wiki like site or user pages, or user preferences; we need to find the highest
+                       // Special handling for the user group; because users might change their stuff
+                       // on-wiki like user pages, or user preferences; we need to find the highest
                        // timestamp of these user-changable modules so we can ensure cache misses on change
-                       if ( $group === 'user' || $group === 'site' ) {
-                               // Create a fake request based on the one we are about to make so modules return
-                               // correct times
-                               $context = new ResourceLoaderContext( $resourceLoader, new FauxRequest( $query ) );
+                       // This should NOT be done for the site group (bug 27564) because anons get that too
+                       // and we shouldn't be putting timestamps in Squid-cached HTML
+                       if ( $group === 'user' ) {
                                // Get the maximum timestamp
                                $timestamp = 1;
                                foreach ( $modules as $module ) {
                                        $timestamp = max( $timestamp, $module->getModifiedTime( $context ) );
                                }
                                // Add a version parameter so cache will break when things change
-                               $query['version'] = wfTimestamp( TS_ISO_8601_BASIC, round( $timestamp, -2 ) );
+                               $query['version'] = wfTimestamp( TS_ISO_8601_BASIC, $timestamp );
                        }
                        // Make queries uniform in order
                        ksort( $query );
@@ -2470,19 +2557,25 @@ class OutputPage {
                        $url = wfAppendQuery( $wgLoadScript, $query );
                        if ( $useESI && $wgResourceLoaderUseESI ) {
                                $esi = Xml::element( 'esi:include', array( 'src' => $url ) );
-                               if ( $only == 'styles' ) {
-                                       $links .= Html::inlineStyle( $esi );
+                               if ( $only == ResourceLoaderModule::TYPE_STYLES ) {
+                                       $link = Html::inlineStyle( $esi );
                                } else {
-                                       $links .= Html::inlineScript( $esi );
+                                       $link = Html::inlineScript( $esi );
                                }
                        } else {
                                // Automatically select style/script elements
-                               if ( $only === 'styles' ) {
-                                       $links .= Html::linkedStyle( wfAppendQuery( $wgLoadScript, $query ) ) . "\n";
+                               if ( $only === ResourceLoaderModule::TYPE_STYLES ) {
+                                       $link = Html::linkedStyle( wfAppendQuery( $wgLoadScript, $query ) );
                                } else {
-                                       $links .= Html::linkedScript( wfAppendQuery( $wgLoadScript, $query ) ) . "\n";
+                                       $link = Html::linkedScript( wfAppendQuery( $wgLoadScript, $query ) );
                                }
                        }
+
+                       if( $group == 'noscript' ){
+                               $links .= Html::rawElement( 'noscript', array(), $link ) . "\n";
+                       } else {
+                               $links .= $link . "\n";
+                       }
                }
                return $links;
        }
@@ -2496,81 +2589,153 @@ class OutputPage {
         * @return String: HTML fragment
         */
        function getHeadScripts( Skin $sk ) {
-               global $wgUser, $wgRequest, $wgUseSiteJs;
+               global $wgRequest, $wgUseSiteJs, $wgAllowUserJs;
 
                // Startup - this will immediately load jquery and mediawiki modules
-               $scripts = $this->makeResourceLoaderLink( $sk, 'startup', 'scripts', true );
-
-               // Configuration -- This could be merged together with the load and go, but
-               // makeGlobalVariablesScript returns a whole script tag -- grumble grumble...
-               $scripts .= Skin::makeGlobalVariablesScript( $sk->getSkinName() ) . "\n";
+               $scripts = $this->makeResourceLoaderLink( $sk, 'startup', ResourceLoaderModule::TYPE_SCRIPTS, true );
 
                // Script and Messages "only" requests
-               $scripts .= $this->makeResourceLoaderLink( $sk, $this->getModuleScripts(), 'scripts' );
-               $scripts .= $this->makeResourceLoaderLink( $sk, $this->getModuleMessages(), 'messages' );
+               $scripts .= $this->makeResourceLoaderLink( $sk, $this->getModuleScripts( true ), ResourceLoaderModule::TYPE_SCRIPTS );
+               $scripts .= $this->makeResourceLoaderLink( $sk, $this->getModuleMessages( true ), ResourceLoaderModule::TYPE_MESSAGES );
 
                // Modules requests - let the client calculate dependencies and batch requests as it likes
-               if ( $this->getModules() ) {
-                       $scripts .= Html::inlineScript(
-                               ResourceLoader::makeLoaderConditionalScript(
-                                       Xml::encodeJsCall( 'mediaWiki.loader.load', array( $this->getModules() ) ) .
-                                       Xml::encodeJsCall( 'mediaWiki.loader.go', array() )
-                               )
-                       ) . "\n";
-               }
+               $loader = '';
+               if ( $this->getModules( true ) ) {
+                       $loader = Xml::encodeJsCall( 'mw.loader.load', array( $this->getModules( true ) ) ) .
+                               Xml::encodeJsCall( 'mw.loader.go', array() );
+               }
+               
+               $scripts .= Html::inlineScript(
+                       ResourceLoader::makeLoaderConditionalScript(
+                               ResourceLoader::makeConfigSetScript( $this->getJSVars() ) . $loader
+                       )
+               );
 
                // Legacy Scripts
                $scripts .= "\n" . $this->mScripts;
 
+               $userScripts = array( 'user.options' );
+
                // Add site JS if enabled
                if ( $wgUseSiteJs ) {
-                       $scripts .= $this->makeResourceLoaderLink( $sk, 'site', 'scripts' );
+                       $scripts .= $this->makeResourceLoaderLink( $sk, 'site', ResourceLoaderModule::TYPE_SCRIPTS );
+                       if( $this->getUser()->isLoggedIn() ){
+                               $userScripts[] = 'user.groups';
+                       }
                }
 
-               // Add user JS if enabled - trying to load user.options as a bundle if possible
-               $userOptionsAdded = false;
-               if ( $this->isUserJsAllowed() && $wgUser->isLoggedIn() ) {
+               // Add user JS if enabled
+               if ( $wgAllowUserJs && $this->getUser()->isLoggedIn() ) {
                        $action = $wgRequest->getVal( 'action', 'view' );
-                       if( $this->mTitle && $this->mTitle->isJsSubpage() && $sk->userCanPreview( $action ) ) {
+                       if( $this->getTitle() && $this->getTitle()->isJsSubpage() && $sk->userCanPreview( $action ) ) {
                                # XXX: additional security check/prompt?
                                $scripts .= Html::inlineScript( "\n" . $wgRequest->getText( 'wpTextbox1' ) . "\n" ) . "\n";
                        } else {
-                               $scripts .= $this->makeResourceLoaderLink(
-                                       $sk, array( 'user', 'user.options' ), 'scripts'
-                               );
-                               $userOptionsAdded = true;
+                               # FIXME: this means that User:Me/Common.js doesn't load when previewing
+                               # User:Me/Vector.js, and vice versa (bug26283)
+                               $userScripts[] = 'user';
                        }
                }
-               if ( !$userOptionsAdded ) {
-                       $scripts .= $this->makeResourceLoaderLink( $sk, 'user.options', 'scripts' );
-               }
+               $scripts .= $this->makeResourceLoaderLink( $sk, $userScripts, ResourceLoaderModule::TYPE_SCRIPTS );
 
                return $scripts;
        }
 
        /**
-        * Add default \<meta\> tags
+        * Get an array containing global JS variables
+        * 
+        * Do not add things here which can be evaluated in
+        * ResourceLoaderStartupScript - in other words, without state.
+        * You will only be adding bloat to the page and causing page caches to
+        * have to be purged on configuration changes.
         */
-       protected function addDefaultMeta() {
-               global $wgVersion, $wgHtml5;
+       protected function getJSVars() {
+               global $wgRequest, $wgUseAjax, $wgEnableMWSuggest, $wgContLang;
 
-               static $called = false;
-               if ( $called ) {
-                       # Don't run this twice
-                       return;
+               $title = $this->getTitle();
+               $ns = $title->getNamespace();
+               $nsname = MWNamespace::exists( $ns ) ? MWNamespace::getCanonicalName( $ns ) : $title->getNsText();
+               if ( $ns == NS_SPECIAL ) {
+                       $parts = SpecialPage::resolveAliasWithSubpage( $title->getDBkey() );
+                       $canonicalName = $parts[0];
+               } else {
+                       $canonicalName = false; # bug 21115
+               }
+
+               $vars = array(
+                       'wgCanonicalNamespace' => $nsname,
+                       'wgCanonicalSpecialPageName' => $canonicalName,
+                       'wgNamespaceNumber' => $title->getNamespace(),
+                       'wgPageName' => $title->getPrefixedDBKey(),
+                       'wgTitle' => $title->getText(),
+                       'wgCurRevisionId' => $title->getLatestRevID(),
+                       'wgArticleId' => $title->getArticleId(),
+                       'wgIsArticle' => $this->isArticle(),
+                       'wgAction' => $wgRequest->getText( 'action', 'view' ),
+                       'wgUserName' => $this->getUser()->isAnon() ? null : $this->getUser()->getName(),
+                       'wgUserGroups' => $this->getUser()->getEffectiveGroups(),
+                       'wgCategories' => $this->getCategories(),
+                       'wgBreakFrames' => $this->getFrameOptions() == 'DENY',
+               );
+               if ( $wgContLang->hasVariants() ) {
+                       $vars['wgUserVariant'] = $wgContLang->getPreferredVariant();
+               }
+               foreach ( $title->getRestrictionTypes() as $type ) {
+                       $vars['wgRestriction' . ucfirst( $type )] = $title->getRestrictions( $type );
+               }
+               if ( $wgUseAjax && $wgEnableMWSuggest && !$this->getUser()->getOption( 'disablesuggest', false ) ) {
+                       $vars['wgSearchNamespaces'] = SearchEngine::userNamespaces( $this->getUser() );
                }
-               $called = true;
+               
+               // Allow extensions to add their custom variables to the global JS variables
+               wfRunHooks( 'MakeGlobalVariablesScript', array( &$vars ) );
+               
+               return $vars;
+       }
+
+       /**
+        * @return string HTML tag links to be put in the header.
+        */
+       public function getHeadLinks( Skin $sk, $addContentType = false ) {
+               global $wgUniversalEditButton, $wgFavicon, $wgAppleTouchIcon, $wgEnableAPI,
+                       $wgSitename, $wgVersion, $wgHtml5, $wgMimeType, $wgOutputEncoding,
+                       $wgFeed, $wgOverrideSiteFeed, $wgAdvertisedFeedTypes,
+                       $wgEnableDublinCoreRdf, $wgEnableCreativeCommonsRdf,
+                       $wgDisableLangConversion, $wgCanonicalLanguageLinks, $wgContLang,
+                       $wgRightsPage, $wgRightsUrl;
+
+               $tags = array();
 
-               if ( !$wgHtml5 ) {
-                       $this->addMeta( 'http:Content-Style-Type', 'text/css' ); // bug 15835
+               if ( $addContentType ) {
+                       if ( $wgHtml5 ) {
+                               # More succinct than <meta http-equiv=Content-Type>, has the
+                               # same effect
+                               $tags[] = Html::element( 'meta', array( 'charset' => $wgOutputEncoding ) );
+                       } else {
+                               $tags[] = Html::element( 'meta', array(
+                                       'http-equiv' => 'Content-Type',
+                                       'content' => "$wgMimeType; charset=$wgOutputEncoding"
+                               ) );
+                               $tags[] = Html::element( 'meta', array(  // bug 15835
+                                       'http-equiv' => 'Content-Style-Type',
+                                       'content' => 'text/css'
+                               ) );
+                       }
                }
-               $this->addMeta( 'generator', "MediaWiki $wgVersion" );
+
+               $tags[] = Html::element( 'meta', array(
+                       'name' => 'generator',
+                       'content' => "MediaWiki $wgVersion",
+               ) );
 
                $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
                if( $p !== 'index,follow' ) {
                        // http://www.robotstxt.org/wc/meta-user.html
                        // Only show if it's different from the default robots policy
-                       $this->addMeta( 'robots', $p );
+                       $tags[] = Html::element( 'meta', array(
+                               'name' => 'robots',
+                               'content' => $p,
+                       ) );
                }
 
                if ( count( $this->mKeywords ) > 0 ) {
@@ -2578,27 +2743,15 @@ class OutputPage {
                                "/<.*?" . ">/" => '',
                                "/_/" => ' '
                        );
-                       $this->addMeta(
-                               'keywords',
-                               preg_replace(
+                       $tags[] = Html::element( 'meta', array(
+                               'name' => 'keywords',
+                               'content' =>  preg_replace(
                                        array_keys( $strip ),
                                        array_values( $strip ),
                                        implode( ',', $this->mKeywords )
                                )
-                       );
+                       ) );
                }
-       }
-
-       /**
-        * @return string HTML tag links to be put in the header.
-        */
-       public function getHeadLinks( Skin $sk ) {
-               global $wgFeed;
-
-               // Ideally this should happen earlier, somewhere. :P
-               $this->addDefaultMeta();
-
-               $tags = array();
 
                foreach ( $this->mMetatags as $tag ) {
                        if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
@@ -2614,11 +2767,137 @@ class OutputPage {
                                )
                        );
                }
+
                foreach ( $this->mLinktags as $tag ) {
                        $tags[] = Html::element( 'link', $tag );
                }
 
-               if( $wgFeed ) {
+               # Universal edit button
+               if ( $wgUniversalEditButton ) {
+                       if ( $this->isArticleRelated() && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
+                               && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
+                               // Original UniversalEditButton
+                               $msg = wfMsg( 'edit' );
+                               $tags[] = Html::element( 'link', array(
+                                       'rel' => 'alternate',
+                                       'type' => 'application/x-wiki',
+                                       'title' => $msg,
+                                       'href' => $this->getTitle()->getLocalURL( 'action=edit' )
+                               ) );
+                               // Alternate edit link
+                               $tags[] = Html::element( 'link', array(
+                                       'rel' => 'edit',
+                                       'title' => $msg,
+                                       'href' => $this->getTitle()->getLocalURL( 'action=edit' )
+                               ) );
+                       }
+               }
+
+               # Generally the order of the favicon and apple-touch-icon links
+               # should not matter, but Konqueror (3.5.9 at least) incorrectly
+               # uses whichever one appears later in the HTML source. Make sure
+               # apple-touch-icon is specified first to avoid this.
+               if ( $wgAppleTouchIcon !== false ) {
+                       $tags[] = Html::element( 'link', array( 'rel' => 'apple-touch-icon', 'href' => $wgAppleTouchIcon ) );
+               }
+
+               if ( $wgFavicon !== false ) {
+                       $tags[] = Html::element( 'link', array( 'rel' => 'shortcut icon', 'href' => $wgFavicon ) );
+               }
+
+               # OpenSearch description link
+               $tags[] = Html::element( 'link', array(
+                       'rel' => 'search',
+                       'type' => 'application/opensearchdescription+xml',
+                       'href' => wfScript( 'opensearch_desc' ),
+                       'title' => wfMsgForContent( 'opensearch-desc' ),
+               ) );
+
+               if ( $wgEnableAPI ) {
+                       # Real Simple Discovery link, provides auto-discovery information
+                       # for the MediaWiki API (and potentially additional custom API
+                       # support such as WordPress or Twitter-compatible APIs for a
+                       # blogging extension, etc)
+                       $tags[] = Html::element( 'link', array(
+                               'rel' => 'EditURI',
+                               'type' => 'application/rsd+xml',
+                               'href' => wfExpandUrl( wfAppendQuery( wfScript( 'api' ), array( 'action' => 'rsd' ) ) ),
+                       ) );
+               }
+
+               # Metadata links
+               # - Creative Commons
+               #   See http://wiki.creativecommons.org/Extend_Metadata.
+               # - Dublin Core
+               #   Use hreflang to specify canonical and alternate links
+               #   See http://www.google.com/support/webmasters/bin/answer.py?answer=189077
+               if ( $this->isArticleRelated() ) {
+                       # note: buggy CC software only reads first "meta" link
+                       if ( $wgEnableCreativeCommonsRdf ) {
+                               $tags[] = Html::element( 'link', array(
+                                       'rel' => $this->getMetadataAttribute(),
+                                       'title' => 'Creative Commons',
+                                       'type' => 'application/rdf+xml',
+                                       'href' => $this->getTitle()->getLocalURL( 'action=creativecommons' ) )
+                               );
+                       }
+
+                       if ( $wgEnableDublinCoreRdf ) {
+                               $tags[] = Html::element( 'link', array(
+                                       'rel' => $this->getMetadataAttribute(),
+                                       'title' => 'Dublin Core',
+                                       'type' => 'application/rdf+xml',
+                                       'href' => $this->getTitle()->getLocalURL( 'action=dublincore' ) )
+                               );
+                       }
+               }
+
+               # Language variants
+               if ( !$wgDisableLangConversion && $wgCanonicalLanguageLinks
+                       && $wgContLang->hasVariants() ) {
+
+                       $urlvar = $wgContLang->getURLVariant();
+
+                       if ( !$urlvar ) {
+                               $variants = $wgContLang->getVariants();
+                               foreach ( $variants as $_v ) {
+                                       $tags[] = Html::element( 'link', array(
+                                               'rel' => 'alternate',
+                                               'hreflang' => $_v,
+                                               'href' => $this->getTitle()->getLocalURL( '', $_v ) )
+                                       );
+                               }
+                       } else {
+                               $tags[] = Html::element( 'link', array(
+                                       'rel' => 'canonical',
+                                       'href' => $this->getTitle()->getFullURL() )
+                               );
+                       }
+               }
+
+               # Copyright
+               $copyright = '';
+               if ( $wgRightsPage ) {
+                       $copy = Title::newFromText( $wgRightsPage );
+
+                       if ( $copy ) {
+                               $copyright = $copy->getLocalURL();
+                       }
+               }
+
+               if ( !$copyright && $wgRightsUrl ) {
+                       $copyright = $wgRightsUrl;
+               }
+
+               if ( $copyright ) {
+                       $tags[] = Html::element( 'link', array(
+                               'rel' => 'copyright',
+                               'href' => $copyright )
+                       );
+               }
+
+               # Feeds
+               if ( $wgFeed ) {
                        foreach( $this->getSyndicationLinks() as $format => $link ) {
                                # Use the page name for the title (accessed through $wgTitle since
                                # there's no other way).  In principle, this could lead to issues
@@ -2641,7 +2920,6 @@ class OutputPage {
                        # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
                        # If so, use it instead.
 
-                       global $wgOverrideSiteFeed, $wgSitename, $wgAdvertisedFeedTypes;
                        $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
 
                        if ( $wgOverrideSiteFeed ) {
@@ -2723,30 +3001,35 @@ class OutputPage {
        public function buildCssLinks( $sk ) {
                $ret = '';
                // Add ResourceLoader styles
-               // Split the styles into three groups
-               $styles = array( 'other' => array(), 'user' => array(), 'site' => array() );
+               // Split the styles into four groups
+               $styles = array( 'other' => array(), 'user' => array(), 'site' => array(), 'private' => array(), 'noscript' => array() );
                $resourceLoader = $this->getResourceLoader();
                foreach ( $this->getModuleStyles() as $name ) {
                        $group = $resourceLoader->getModule( $name )->getGroup();
-                       // Modules in groups named "other" or anything different than "user" or "site" will
-                       // be placed in the "other" group
+                       // Modules in groups named "other" or anything different than "user", "site" or "private"
+                       // will be placed in the "other" group
                        $styles[isset( $styles[$group] ) ? $group : 'other'][] = $name;
                }
 
-               // We want site and user styles to override dynamically added styles from modules, but we want
+               // We want site, private and user styles to override dynamically added styles from modules, but we want
                // dynamically added styles to override statically added styles from other modules. So the order
-               // has to be other, dynamic, site, user
+               // has to be other, dynamic, site, private, user
                // Add statically added styles for other modules
-               $ret .= $this->makeResourceLoaderLink( $sk, $styles['other'], 'styles' );
+               $ret .= $this->makeResourceLoaderLink( $sk, $styles['other'], ResourceLoaderModule::TYPE_STYLES );
                // Add normal styles added through addStyle()/addInlineStyle() here
                $ret .= implode( "\n", $this->buildCssLinksArray() ) . $this->mInlineStyles;
                // Add marker tag to mark the place where the client-side loader should inject dynamic styles
                // We use a <meta> tag with a made-up name for this because that's valid HTML
-               $ret .= Html::element( 'meta', array( 'name' => 'ResourceLoaderDynamicStyles', 'content' => '' ) );
-               // Add site and user styles
-               $ret .= $this->makeResourceLoaderLink(
-                       $sk, array_merge( $styles['site'], $styles['user'] ), 'styles'
-               );
+               $ret .= Html::element( 'meta', array( 'name' => 'ResourceLoaderDynamicStyles', 'content' => '' ) ) . "\n";
+               
+               // Add site, private and user styles
+               // 'private' at present only contains user.options, so put that before 'user'
+               // Any future private modules will likely have a similar user-specific character
+               foreach ( array( 'site', 'noscript', 'private', 'user' ) as $group ) {
+                       $ret .= $this->makeResourceLoaderLink( $sk, $styles[$group],
+                                       ResourceLoaderModule::TYPE_STYLES
+                       );
+               }
                return $ret;
        }
 
@@ -2949,7 +3232,7 @@ class OutputPage {
                        }
                        $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
                }
-               $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
+               $this->addWikiText( $s );
        }
 
        /**
@@ -2959,7 +3242,7 @@ class OutputPage {
         * @param $modules Array: list of jQuery modules which should be loaded
         * @return Array: the list of modules which were not loaded.
         * @since 1.16
-        * @deprecated @since 1.17
+        * @deprecated since 1.17
         */
        public function includeJQuery( $modules = array() ) {
                return array();