And while I'm at it: removed unused global declarations of $wgFeedClasses
[lhc/web/wiklou.git] / includes / OutputPage.php
index 4c68b15..f95c6e5 100644 (file)
@@ -12,24 +12,22 @@ class OutputPage {
        var $mHTMLtitle = '', $mIsarticle = true, $mPrintable = false;
        var $mSubtitle = '', $mRedirect = '', $mStatusCode;
        var $mLastModified = '', $mETag = false;
-       var $mCategoryLinks = array(), $mLanguageLinks = array();
-
-       var $mScriptLoaderClassList = array();
-       // the most recent id of any script that is grouped in the script request
-       var $mLatestScriptRevID = 0;
+       var $mCategoryLinks = array(), $mCategories = array(), $mLanguageLinks = array();
 
        var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
+       var $mInlineMsg = array();
+
        var $mTemplateIds = array();
 
        var $mAllowUserJs;
        var $mSuppressQuickbar = false;
-       var $mOnloadHandler = '';
        var $mDoNothing = false;
        var $mContainsOldMagic = 0, $mContainsNewMagic = 0;
        var $mIsArticleRelated = true;
        protected $mParserOptions = null; // lazy initialised, use parserOptions()
-       var $mShowFeedLinks = false;
-       var $mFeedLinksAppendQuery = false;
+
+       var $mFeedLinks = array();
+
        var $mEnableClientCache = true;
        var $mArticleBodyOnly = false;
 
@@ -49,8 +47,15 @@ class OutputPage {
         */
        var $styles = array();
 
+       /**
+        * Whether to load jQuery core.
+        */
+       protected $mIncludeJQuery = false;
+
        private $mIndexPolicy = 'index';
        private $mFollowPolicy = 'follow';
+       private $mVaryHeader = array( 'Accept-Encoding' => array('list-contains=gzip'),
+                                                                 'Cookie' => null );
 
        /**
         * Constructor
@@ -98,7 +103,7 @@ class OutputPage {
                }
        }
        function addScript( $script ) {
-               $this->mScripts .= "\t\t" . $script . "\n";
+               $this->mScripts .= $script . "\n";
        }
 
        /**
@@ -117,157 +122,13 @@ class OutputPage {
         * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
         */
        function addScriptFile( $file ) {
-               global $wgStylePath, $wgScript, $wgUser;
-               global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgEnableScriptLoader, $wgScriptPath;
-
+               global $wgStylePath, $wgStyleVersion;
                if( substr( $file, 0, 1 ) == '/' ) {
                        $path = $file;
                } else {
-                       $path = "{$wgStylePath}/common/{$file}";
-               }
-
-               if( $wgEnableScriptLoader ){
-                       if( strpos( $path, $wgScript ) !== false ){
-                               $reqPath = str_replace( $wgScript . '?', '', $path );
-                               $reqArgs = explode( '&', $reqPath );
-                               $reqSet = array();
-
-                               foreach( $reqArgs as $arg ){
-                                       list( $key, $var ) = explode( '=', $arg );
-                                       $reqSet[$key] = $var;
-                               }
-
-                               if( isset( $reqSet['title'] ) && $reqSet != '' ) {
-                                       // extract any extra param (for now just skin)
-                                       $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' ) ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
-                                       $this->mScriptLoaderClassList[] = 'WT:' . $reqSet['title'] . $ext_param ;
-                                       // add the title revision to the key
-                                       $t = Title::newFromText( $reqSet['title'] );
-                                       // if there is no title (don't worry we just use the $wgStyleVersion var (which should be updated on relevant commits)
-                                       if( $t && $t->exists() ){
-                                               if( $t->getLatestRevID() > $this->mLatestScriptRevID  )
-                                                       $this->mLatestScriptRevID = $t->getLatestRevID();
-                                       }
-                                       return true;
-                               }
-                       }
-
-                       // check for class from path:
-                       $js_class = $this->getJsClassFromPath( $path );
-                       if( $js_class ){
-                               // add to the class list:
-                               $this->mScriptLoaderClassList[] = $js_class;
-                               return true;
-                       }
-               }
-
-               // if the script loader did not find a way to add the script than add using addScript
-               $this->addScript( Html::linkedScript( wfAppendQuery( $path, $this->getURIDparam() ) ) );
-       }
-
-       /**
-        * This is the core script that is included on every page
-        * (they are requested separately to improve caching across
-        *  different page load types (edit, upload, view, etc)
-        */
-       function addCoreScripts2Top(){
-               global $wgEnableScriptLoader, $wgJSAutoloadLocalClasses, $wgScriptPath, $wgEnableJS2system;
-               //@@todo we should deprecate wikibits in favor of mv_embed and native jQuery functions
-
-               if( $wgEnableJS2system ){
-                       $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
-               } else {
-                       $core_classes = array( 'wikibits' );
-               }
-
-               if( $wgEnableScriptLoader ){
-                       $this->mScripts = $this->getScriptLoaderJs( $core_classes ) . $this->mScripts;
-               } else {
-                       $so = '';
-                       foreach( $core_classes as $s ){
-                               if( isset( $wgJSAutoloadLocalClasses[$s] ) ){
-                                       $so .= Html::linkedScript( "{$wgScriptPath}/{$wgJSAutoloadLocalClasses[$s]}?" . $this->getURIDparam() );
-                               }
-                       }
-                       $this->mScripts =  $so . $this->mScripts;
-               }
-       }
-
-       /**
-        * @param $js_class String: name of JavaScript class
-        * @return Boolean: false if class wasn't found, true on success
-        */
-       function addScriptClass( $js_class ){
-               global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
-                               $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath;
-
-               if( isset( $wgJSAutoloadClasses[$js_class] ) || isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
-                       if( $wgEnableScriptLoader ){
-                               if( !in_array( $js_class, $this->mScriptLoaderClassList ) ){
-                                       $this->mScriptLoaderClassList[] = $js_class;
-                               }
-                       } else {
-                               // do a normal load of without the script-loader:
-                               $path = $wgScriptPath . '/';
-                               if( isset( $wgJSAutoloadClasses[$js_class] ) ){
-                                       $path.= $wgJSAutoloadClasses[$js_class];
-                               }else if( isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
-                                       $path.= $wgJSAutoloadLocalClasses[$js_class];
-                               }
-                               $urlAppend = ( $wgDebugJavaScript ) ? time() : $wgStyleVersion;
-                               $this->addScript( Html::linkedScript( "$path?$urlAppend" ) );
-                       }
-                       return true;
-               }
-               wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
-               return false; // could not find the class
-       }
-
-       /**
-        * gets the scriptLoader javascript include
-        * @param $forcClassAry Boolean: false by default
-        */
-       function getScriptLoaderJs( $forceClassAry = false ){
-               global $wgRequest, $wgDebugJavaScript;
-
-               if( !$forceClassAry ){
-                       $class_list = implode( ',', $this->mScriptLoaderClassList );
-               } else {
-                       $class_list = implode( ',', $forceClassAry );
-               }
-
-               $debug_param = ( $wgDebugJavaScript ||
-                                                $wgRequest->getVal( 'debug' ) == 'true' ||
-                                                $wgRequest->getVal( 'debug' ) == '1' )
-                                        ? '&debug=true' : '';
-
-               //@@todo intelligent unique id generation based on svn version of file (rather than just grabbing the $wgStyleVersion var)
-               //@@todo we should check the packaged message text in this javascript file for updates and update the $mScriptLoaderURID id (in getJsClassFromPath)
-
-               //generate the unique request param (combine with the most recent revision id of any wiki page with the $wgStyleVersion var)
-
-               return Html::linkedScript( wfScript( 'mwScriptLoader' ) . "?class={$class_list}{$debug_param}&" . $this->getURIDparam() );
-       }
-
-       function getURIDparam(){
-               global $wgDebugJavaScript, $wgStyleVersion;
-               if( $wgDebugJavaScript ){
-                       return 'urid=' . time();
-               } else {
-                       return "urid={$wgStyleVersion}_{$this->mLatestScriptRevID}";
+                       $path =  "{$wgStylePath}/common/{$file}";
                }
-       }
-
-       function getJsClassFromPath( $path ){
-               global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
-
-               $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
-               foreach( $scriptLoaderPaths as $js_class => $js_path ){
-                       $js_path = "{$wgScriptPath}/{$js_path}";
-                       if( $path == $js_path )
-                               return $js_class;
-               }
-               return false;
+               $this->addScript( Html::linkedScript( "$path?$wgStyleVersion" ) );
        }
 
        /**
@@ -275,17 +136,14 @@ class OutputPage {
         * @param string $script JavaScript text, no <script> tags
         */
        function addInlineScript( $script ) {
-               $this->mScripts .= "\t\t" . Html::inlineScript( "\n\t\t$script\n\t\t" ) . "\n";
+               $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
        }
 
+       /**
+        * Get all registered JS and CSS tags for the header.
+        */
        function getScript() {
-               global $wgEnableScriptLoader;
-               if( $wgEnableScriptLoader ){
-                       //include $this->mScripts (for anything that we could not package into the scriptloader
-                       return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
-               } else {
-                       return $this->mScripts . $this->getHeadItems();
-               }
+               return $this->mScripts . $this->getHeadItems();
        }
 
        function getHeadItems() {
@@ -306,7 +164,7 @@ class OutputPage {
 
        function setETag($tag) { $this->mETag = $tag; }
        function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
-       function getArticleBodyOnly($only) { return $this->mArticleBodyOnly; }
+       function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 
        function addLink( $linkarr ) {
                # $linkarr should be an associative array of attributes. We'll escape on output.
@@ -434,22 +292,14 @@ class OutputPage {
         * @return null
         */
        public function setRobotPolicy( $policy ) {
-               $policy = explode( ',', $policy );
-               $policy = array_map( 'trim', $policy );
+               $policy = Article::formatRobotPolicy( $policy );
 
-               # The default policy is follow, so if nothing is said explicitly, we
-               # do that.
-               if( in_array( 'nofollow', $policy ) ) {
-                       $this->mFollowPolicy = 'nofollow';
-               } else {
-                       $this->mFollowPolicy = 'follow';
-               }
-
-               if( in_array( 'noindex', $policy ) ) {
-                       $this->mIndexPolicy = 'noindex';
-               } else {
-                       $this->mIndexPolicy = 'index';
-               }
+               if( isset( $policy['index'] ) ){
+                       $this->setIndexPolicy( $policy['index'] );
+               }
+               if( isset( $policy['follow'] ) ){
+                       $this->setFollowPolicy( $policy['follow'] );
+               }
        }
 
        /**
@@ -492,10 +342,8 @@ class OutputPage {
         * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
         * This function automatically sets <title> to the same content as <h1> but with all tags removed.
         * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
-         */
+        */
        public function setPageTitle( $name ) {
-               global $wgContLang;
-               $name = $wgContLang->convert( $name, true );
                # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
                # but leave "<i>foobar</i>" alone
                $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
@@ -533,15 +381,67 @@ class OutputPage {
        public function isArticle() { return $this->mIsarticle; }
        public function setPrintable() { $this->mPrintable = true; }
        public function isPrintable() { return $this->mPrintable; }
-       public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
-       public function isSyndicated() { return $this->mShowFeedLinks; }
-       public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
-       public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
-       public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
-       public function getOnloadHandler() { return $this->mOnloadHandler; }
        public function disable() { $this->mDoNothing = true; }
        public function isDisabled() { return $this->mDoNothing; }
 
+       /**
+        * Add or remove feed links in the page header
+        * This is mainly kept for backward compatibility, see OutputPage::addFeedLink()
+        * for the new version
+        * @see addFeedLink()
+        *
+        * @param $show Boolean: true: add default feeds, false: remove all feeds
+        */
+       public function setSyndicated( $show = true ) {
+               if ( $show ) {
+                       $this->setFeedAppendQuery( false );
+               } else {
+                       $this->mFeedLinks = array();
+               }
+       }
+
+       /**
+        * Add default feeds to the page header
+        * This is mainly kept for backward compatibility, see OutputPage::addFeedLink()
+        * for the new version
+        * @see addFeedLink()
+        *
+        * @param $val String: query to append to feed links or false to output
+        *        default links
+        */
+       public function setFeedAppendQuery( $val ) {
+               global $wgAdvertisedFeedTypes;
+
+               $this->mFeedLinks = array();
+
+               foreach ( $wgAdvertisedFeedTypes as $type ) {
+                       $query = "feed=$type";
+                       if ( is_string( $val ) ) {
+                               $query .= '&' . $val;
+                       }
+                       $this->mFeedLinks[$type] = $this->getTitle()->getLocalURL( $query );
+               }
+       }
+
+       /**
+        * Add a feed link to the page header
+        *
+        * @param $format String: feed type, should be a key of $wgFeedClasses
+        * @param $href String: URL
+        */
+       public function addFeedLink( $format, $href ) {
+               $this->mFeedLinks[$format] = $href;
+       }
+
+       /**
+        * Return the number of feed links that will be added to the page header
+        *
+        * @return Boolean
+        */
+       public function isSyndicated() { return count($this->mFeedLinks); }
+
+       public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
+
        public function setArticleRelated( $v ) {
                $this->mIsArticleRelated = $v;
                if ( !$v ) {
@@ -569,6 +469,10 @@ class OutputPage {
                return $this->mCategoryLinks;
        }
 
+       public function getCategories() {
+               return $this->mCategories;
+       }
+
        /**
         * Add an array of categories, with names in the keys
         */
@@ -618,6 +522,7 @@ class OutputPage {
                                        if ( array_key_exists( $category, $categories ) )
                                                continue;
                                $text = $wgContLang->convertHtml( $title->getText() );
+                               $this->mCategories[] = $title->getText();
                                $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
                        }
                }
@@ -721,23 +626,12 @@ class OutputPage {
                $this->mNewSectionLink = $parserOutput->getNewSection();
                $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 
-               if( is_null( $wgExemptFromUserRobotsControl ) ) {
-                       $bannedNamespaces = $wgContentNamespaces;
-               } else {
-                       $bannedNamespaces = $wgExemptFromUserRobotsControl;
-               }
-               if( !in_array( $this->getTitle()->getNamespace(), $bannedNamespaces ) ) {
-                       # FIXME (bug 14900): This overrides $wgArticleRobotPolicies, and it
-                       # shouldn't
-                       $this->setIndexPolicy( $parserOutput->getIndexPolicy() );
-               }
-
                $this->mParseWarnings = $parserOutput->getWarnings();
                if ( $parserOutput->getCacheTime() == -1 ) {
                        $this->enableClientCache( false );
                }
                $this->mNoGallery = $parserOutput->getNoGallery();
-               $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
+               $this->mHeadItems = array_merge( $this->mHeadItems, $parserOutput->getHeadItems() );
                // Versioning...
                foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
                        if ( isset( $this->mTemplateIds[$ns] ) ) {
@@ -747,10 +641,10 @@ class OutputPage {
                        }
                }
                // Page title
-               if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
-                       $this->setPageTitle( $dt );
-               else if ( ( $title = $parserOutput->getTitleText() ) != '' )
+               $title = $parserOutput->getTitleText();
+               if ( $title != '' ) {
                        $this->setPageTitle( $title );
+               }
 
                // Hooks registered in the object
                global $wgParserOutputHooks;
@@ -770,7 +664,7 @@ class OutputPage {
         */
        function addParserOutput( &$parserOutput ) {
                $this->addParserOutputNoText( $parserOutput );
-               $text = $parserOutput->getText();
+               $text = $parserOutput->getText();
                wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
                $this->addHTML( $text );
        }
@@ -943,20 +837,64 @@ class OutputPage {
                return false;
        }
 
+       public function addVaryHeader( $header, $option = null ) {
+               if ( !array_key_exists( $header, $this->mVaryHeader ) ) {
+                       $this->mVaryHeader[$header] = $option;
+               }
+               elseif( is_array( $option ) ) {
+                       if( is_array( $this->mVaryHeader[$header] ) ) {
+                               $this->mVaryHeader[$header] = array_merge( $this->mVaryHeader[$header], $option );
+                       }
+                       else {
+                               $this->mVaryHeader[$header] = $option;
+                       }
+               }
+               $this->mVaryHeader[$header] = array_unique( $this->mVaryHeader[$header] );
+       }
+
        /** Get a complete X-Vary-Options header */
        public function getXVO() {
                $cvCookies = $this->getCacheVaryCookies();
-               $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
-               $first = true;
+               
+               $cookiesOption = array();
                foreach ( $cvCookies as $cookieName ) {
-                       if ( $first ) {
-                               $first = false;
-                       } else {
-                               $xvo .= ';';
+                       $cookiesOption[] = 'string-contains=' . $cookieName;
+               }
+               $this->addVaryHeader( 'Cookie', $cookiesOption );
+               
+               $headers = array();
+               foreach( $this->mVaryHeader as $header => $option ) {
+                       $newheader = $header;
+                       if( is_array( $option ) )
+                               $newheader .= ';' . implode( ';', $option );
+                       $headers[] = $newheader;
+               }
+               $xvo = 'X-Vary-Options: ' . implode( ',', $headers );
+               
+               return $xvo;
+       }
+
+       /** bug 21672: Add Accept-Language to Vary and XVO headers
+               if there's no 'variant' parameter existed in GET.
+               
+               For example:
+                /w/index.php?title=Main_page should always be served; but
+                /w/index.php?title=Main_page&variant=zh-cn should never be served.
+               
+               patched by Liangent and Philip */
+       function addAcceptLanguage() {
+               global $wgRequest, $wgContLang;
+               if( !$wgRequest->getCheck('variant') && $wgContLang->hasVariants() ) {
+                       $variants = $wgContLang->getVariants();
+                       $aloption = array();
+                       foreach ( $variants as $variant ) {
+                               if( $variant === $wgContLang->getCode() )
+                                       continue;
+                               else
+                                       $aloption[] = "string-contains=$variant";
                        }
-                       $xvo .= 'string-contains=' . $cookieName;
+                       $this->addVaryHeader( 'Accept-Language', $aloption );
                }
-               return $xvo;
        }
 
        public function sendCacheControl() {
@@ -966,9 +904,11 @@ class OutputPage {
                if ($wgUseETag && $this->mETag)
                        $response->header("ETag: $this->mETag");
 
+               $this->addAcceptLanguage();
+
                # don't serve compressed data to clients who can't handle it
                # maintain different caches for logged-in users and non-logged in ones
-               $response->header( 'Vary: Accept-Encoding, Cookie' );
+               $response->header( 'Vary: ' . join( ', ', array_keys( $this->mVaryHeader ) ) );
 
                if ( $wgUseXVO ) {
                        # Add an X-Vary-Options header for Squid with Wikimedia patches
@@ -1017,6 +957,66 @@ class OutputPage {
                        $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
                        $response->header( 'Pragma: no-cache' );
                }
+               wfRunHooks('CacheHeadersAfterSet', array( $this ) );
+       }
+
+       /**
+        * Get the message associed with the HTTP response code $code
+        *
+        * @param $code Integer: status code
+        * @return String or null: message or null if $code is not in the list of
+        *         messages
+        */
+       public static function getStatusMessage( $code ) {
+               static $statusMessage = array(
+                       100 => 'Continue',
+                       101 => 'Switching Protocols',
+                       102 => 'Processing',
+                       200 => 'OK',
+                       201 => 'Created',
+                       202 => 'Accepted',
+                       203 => 'Non-Authoritative Information',
+                       204 => 'No Content',
+                       205 => 'Reset Content',
+                       206 => 'Partial Content',
+                       207 => 'Multi-Status',
+                       300 => 'Multiple Choices',
+                       301 => 'Moved Permanently',
+                       302 => 'Found',
+                       303 => 'See Other',
+                       304 => 'Not Modified',
+                       305 => 'Use Proxy',
+                       307 => 'Temporary Redirect',
+                       400 => 'Bad Request',
+                       401 => 'Unauthorized',
+                       402 => 'Payment Required',
+                       403 => 'Forbidden',
+                       404 => 'Not Found',
+                       405 => 'Method Not Allowed',
+                       406 => 'Not Acceptable',
+                       407 => 'Proxy Authentication Required',
+                       408 => 'Request Timeout',
+                       409 => 'Conflict',
+                       410 => 'Gone',
+                       411 => 'Length Required',
+                       412 => 'Precondition Failed',
+                       413 => 'Request Entity Too Large',
+                       414 => 'Request-URI Too Large',
+                       415 => 'Unsupported Media Type',
+                       416 => 'Request Range Not Satisfiable',
+                       417 => 'Expectation Failed',
+                       422 => 'Unprocessable Entity',
+                       423 => 'Locked',
+                       424 => 'Failed Dependency',
+                       500 => 'Internal Server Error',
+                       501 => 'Not Implemented',
+                       502 => 'Bad Gateway',
+                       503 => 'Service Unavailable',
+                       504 => 'Gateway Timeout',
+                       505 => 'HTTP Version Not Supported',
+                       507 => 'Insufficient Storage'
+               );
+               return isset( $statusMessage[$code] ) ? $statusMessage[$code] : null;
        }
 
        /**
@@ -1034,89 +1034,37 @@ class OutputPage {
                        return;
                }
                wfProfileIn( __METHOD__ );
-               if ( '' != $this->mRedirect ) {
+               if ( $this->mRedirect != '' ) {
                        # Standards require redirect URLs to be absolute
                        $this->mRedirect = wfExpandUrl( $this->mRedirect );
-                       if( $this->mRedirectCode == '301') {
+                       if( $this->mRedirectCode == '301' || $this->mRedirectCode == '303' ) {
                                if( !$wgDebugRedirects ) {
-                                       $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
+                                       $message = self::getStatusMessage( $this->mRedirectCode );
+                                       $wgRequest->response()->header( "HTTP/1.1 {$this->mRedirectCode} $message" );
                                }
                                $this->mLastModified = wfTimestamp( TS_RFC2822 );
                        }
                        $this->sendCacheControl();
 
-                       $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
+                       $wgRequest->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 );
+                               $wgRequest->response()->header( 'Location: ' . $this->mRedirect );
                        }
                        wfProfileOut( __METHOD__ );
                        return;
-               }
-               elseif ( $this->mStatusCode )
-               {
-                       $statusMessage = array(
-                               100 => 'Continue',
-                               101 => 'Switching Protocols',
-                               102 => 'Processing',
-                               200 => 'OK',
-                               201 => 'Created',
-                               202 => 'Accepted',
-                               203 => 'Non-Authoritative Information',
-                               204 => 'No Content',
-                               205 => 'Reset Content',
-                               206 => 'Partial Content',
-                               207 => 'Multi-Status',
-                               300 => 'Multiple Choices',
-                               301 => 'Moved Permanently',
-                               302 => 'Found',
-                               303 => 'See Other',
-                               304 => 'Not Modified',
-                               305 => 'Use Proxy',
-                               307 => 'Temporary Redirect',
-                               400 => 'Bad Request',
-                               401 => 'Unauthorized',
-                               402 => 'Payment Required',
-                               403 => 'Forbidden',
-                               404 => 'Not Found',
-                               405 => 'Method Not Allowed',
-                               406 => 'Not Acceptable',
-                               407 => 'Proxy Authentication Required',
-                               408 => 'Request Timeout',
-                               409 => 'Conflict',
-                               410 => 'Gone',
-                               411 => 'Length Required',
-                               412 => 'Precondition Failed',
-                               413 => 'Request Entity Too Large',
-                               414 => 'Request-URI Too Large',
-                               415 => 'Unsupported Media Type',
-                               416 => 'Request Range Not Satisfiable',
-                               417 => 'Expectation Failed',
-                               422 => 'Unprocessable Entity',
-                               423 => 'Locked',
-                               424 => 'Failed Dependency',
-                               500 => 'Internal Server Error',
-                               501 => 'Not Implemented',
-                               502 => 'Bad Gateway',
-                               503 => 'Service Unavailable',
-                               504 => 'Gateway Timeout',
-                               505 => 'HTTP Version Not Supported',
-                               507 => 'Insufficient Storage'
-                       );
-
-                       if ( $statusMessage[$this->mStatusCode] )
-                               $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
+               } elseif ( $this->mStatusCode ) {
+                       $message = self::getStatusMessage( $this->mStatusCode );
+                       if ( $message )
+                               $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $message );
                }
 
                $sk = $wgUser->getSkin();
 
-               // add our core scripts to output
-               $this->addCoreScripts2Top();
-
                if ( $wgUseAjax ) {
                        $this->addScriptFile( 'ajax.js' );
 
@@ -1139,16 +1087,17 @@ class OutputPage {
                        if( isset( $wgArticle ) && $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' => wfMsg( 'edit' ),
+                                       'title' => $msg,
                                        'href' => $this->getTitle()->getLocalURL( 'action=edit' )
                                ) );
                                // Alternate edit link
                                $this->addLink( array(
                                        'rel' => 'edit',
-                                       'title' => wfMsg( 'edit' ),
+                                       'title' => $msg,
                                        'href' => $this->getTitle()->getLocalURL( 'action=edit' )
                                ) );
                        }
@@ -1519,21 +1468,21 @@ class OutputPage {
                        // Wiki is read only
                        $this->setPageTitle( wfMsg( 'readonly' ) );
                        $reason = wfReadOnlyReason();
-                       $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
+                       $this->wrapWikiMsg( '<div class="mw-readonly-error">\n$1</div>', array( 'readonlytext', $reason ) );
                }
 
                // Show source, if supplied
                if( is_string( $source ) ) {
                        $this->addWikiMsg( 'viewsourcetext' );
-                       $text = Xml::openElement( 'textarea',
-                                               array( 'id'   => 'wpTextbox1',
-                                                      'name' => 'wpTextbox1',
-                                                      'cols' => $wgUser->getOption( 'cols' ),
-                                                      'rows' => $wgUser->getOption( 'rows' ),
-                                                      'readonly' => 'readonly' ) );
-                       $text .= htmlspecialchars( $source );
-                       $text .= Xml::closeElement( 'textarea' );
-                       $this->addHTML( $text );
+
+                       $params = array(
+                               'id'   => 'wpTextbox1',
+                               'name' => 'wpTextbox1',
+                               'cols' => $wgUser->getOption( 'cols' ),
+                               'rows' => $wgUser->getOption( 'rows' ),
+                               'readonly' => 'readonly'
+                       );
+                       $this->addHTML( Html::element( 'textarea', $params, $source ) );
 
                        // Show templates used by this article
                        $skin = $wgUser->getSkin();
@@ -1620,8 +1569,8 @@ class OutputPage {
        /**
         * Add a "return to" link pointing to a specified title
         *
-        * @param Title $title Title to link
-        * @param string $query Query string
+        * @param $title Title to link
+        * @param $query String: query string
         */
        public function addReturnTo( $title, $query = array() ) {
                global $wgUser;
@@ -1635,8 +1584,9 @@ class OutputPage {
         * Add a "return to" link pointing to a specified title,
         * or the title indicated in the request, or else the main page
         *
-        * @param null $unused No longer used
-        * @param Title $returnto Title to return to
+        * @param $unused No longer used
+        * @param $returnto Title or String to return to
+        * @param $returntoquery String: query string for the return to link
         */
        public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
                global $wgRequest;
@@ -1649,7 +1599,7 @@ class OutputPage {
                        $returntoquery = $wgRequest->getText( 'returntoquery' );
                }
 
-               if ( '' === $returnto ) {
+               if ( $returnto === '' ) {
                        $returnto = Title::newMainPage();
                }
 
@@ -1667,11 +1617,14 @@ class OutputPage {
 
        /**
         * @return string The doctype, opening <html>, and head element.
+        *
+        * @param $sk Skin The given Skin
         */
-       public function headElement( Skin $sk ) {
+       public function headElement( Skin $sk, $includeStyle = true ) {
                global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
-               global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
-               global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
+               global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces, $wgHtml5Version;
+               global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgHtml5, $wgWellFormedXml;
+               global $wgUser, $wgRequest, $wgLang;
 
                $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
                if ( $sk->commonPrintStylesheet() ) {
@@ -1685,15 +1638,29 @@ class OutputPage {
                        $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
                }
 
-               if ( '' == $this->getHTMLTitle() ) {
+               if ( $this->getHTMLTitle() == '' ) {
                        $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
                }
 
                $dir = $wgContLang->getDir();
 
                if ( $wgHtml5 ) {
-                       $ret .= "<!doctype html>\n";
-                       $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
+                       if ( $wgWellFormedXml ) {
+                               # Unknown elements and attributes are okay in XML, but unknown
+                               # named entities are well-formedness errors and will break XML
+                               # parsers.  Thus we need a doctype that gives us appropriate
+                               # entity definitions.  The HTML5 spec permits four legacy
+                               # doctypes as obsolete but conforming, so let's pick one of
+                               # those, although it makes our pages look like XHTML1 Strict.
+                               # Isn't compatibility great?
+                               $ret .= "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n";
+                       } else {
+                               # Much saner.
+                               $ret .= "<!doctype html>\n";
+                       }
+                       $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\" ";
+                       if ( $wgHtml5Version ) $ret .= " version=\"$wgHtml5Version\" ";
+                       $ret .= ">\n";
                } else {
                        $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
                        $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
@@ -1703,27 +1670,102 @@ class OutputPage {
                        $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
                }
 
-               $ret .= "<head>\n\t<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n\t";
+               $ret .= "<head>\n";
+               $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
                $ret .= implode( "\n", array(
                        $this->getHeadLinks(),
                        $this->buildCssLinks(),
-                       $sk->getHeadScripts( $this ),
+                       $this->getHeadScripts( $sk ),
                        $this->getHeadItems(),
                ));
                if( $sk->usercss ){
                        $ret .= Html::inlineStyle( $sk->usercss );
                }
 
-               if( $wgEnableScriptLoader )
-                       $ret .= $this->getScriptLoaderJs();
-
                if ($wgUseTrackbacks && $this->isArticleRelated())
                        $ret .= $this->getTitle()->trackbackRDF();
 
                $ret .= "</head>\n";
+
+               $bodyAttrs = array();
+
+               # Crazy edit-on-double-click stuff
+               $action = $wgRequest->getVal( 'action', 'view' );
+
+               if ( $this->getTitle()->getNamespace() != NS_SPECIAL
+               && !in_array( $action, array( 'edit', 'submit' ) )
+               && $wgUser->getOption( 'editondblclick' ) ) {
+                       $bodyAttrs['ondblclick'] = "document.location = '" . Xml::escapeJsString( $this->getTitle()->getEditURL() ) . "'";
+               }
+
+               # Class bloat
+               $bodyAttrs['class'] = "mediawiki $dir";
+
+               if ( $wgLang->capitalizeAllNouns() ) {
+                       # 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() );
+
+               $ret .= Html::openElement( 'body', $bodyAttrs ) . "\n";
+
                return $ret;
        }
 
+       /*
+        * gets the global variables and mScripts
+        *
+        * also adds userjs to the end if enabled:
+       */
+       function getHeadScripts( Skin $sk ) {
+               global $wgUser, $wgRequest, $wgJsMimeType, $wgUseSiteJs;
+               global $wgStylePath, $wgStyleVersion;
+
+               $scripts = Skin::makeGlobalVariablesScript( $sk->getSkinName() );
+               $scripts .= Html::linkedScript( "{$wgStylePath}/common/wikibits.js?$wgStyleVersion" );
+
+               //add site JS if enabled:
+               if( $wgUseSiteJs ) {
+                       $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
+                       $this->addScriptFile(  Skin::makeUrl( '-',
+                                       "action=raw$jsCache&gen=js&useskin=" .
+                                       urlencode( $sk->getSkinName() )
+                                       )
+                               );
+               }
+
+               //add user js if enabled:
+               if( $this->isUserJsAllowed() && $wgUser->isLoggedIn() ) {
+                       $action = $wgRequest->getVal( 'action', 'view' );
+                       if( $this->mTitle && $this->mTitle->isJsSubpage() and $sk->userCanPreview( $action ) ) {
+                               # XXX: additional security check/prompt?
+                               $this->addInlineScript( $wgRequest->getText( 'wpTextbox1' ) );
+                       } else {
+                               $userpage = $wgUser->getUserPage();
+                               $scriptpage = Title::makeTitleSafe(
+                                       NS_USER,
+                                       $userpage->getDBkey() . '/' . $sk->getSkinName() . '.js'
+                               );
+                               if ( $scriptpage && $scriptpage->exists() ) {
+                                       $userjs = Skin::makeUrl( $scriptpage->getPrefixedText(), 'action=raw&ctype=' . $wgJsMimeType );
+                                       $this->addScriptFile( $userjs );
+                               }
+                       }
+               }
+
+               $scripts .= "\n" . $this->mScripts;
+               return $scripts;
+       }
+
        protected function addDefaultMeta() {
                global $wgVersion, $wgHtml5;
 
@@ -1773,13 +1815,13 @@ class OutputPage {
                        } else {
                                $a = 'name';
                        }
-                       $tags[] = Xml::element( 'meta',
+                       $tags[] = Html::element( 'meta',
                                array(
                                        $a => $tag[0],
                                        'content' => $tag[1] ) );
                }
                foreach ( $this->mLinktags as $tag ) {
-                       $tags[] = Xml::element( 'link', $tag );
+                       $tags[] = Html::element( 'link', $tag );
                }
 
                if( $wgFeed ) {
@@ -1792,7 +1834,8 @@ class OutputPage {
                                $tags[] = $this->feedLink(
                                        $format,
                                        $link,
-                                       wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
+                                       # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
+                                       wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) );
                        }
 
                        # Recent changes feed should appear on every page (except recentchanges,
@@ -1803,7 +1846,7 @@ class OutputPage {
                        # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
                        # If so, use it instead.
 
-                       global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
+                       global $wgOverrideSiteFeed, $wgSitename, $wgAdvertisedFeedTypes;
                        $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
 
                        if ( $wgOverrideSiteFeed ) {
@@ -1813,9 +1856,8 @@ class OutputPage {
                                                htmlspecialchars( $feedUrl ),
                                                wfMsg( "site-{$type}-feed", $wgSitename ) );
                                }
-                       }
-                       else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
-                               foreach( $wgFeedClasses as $format => $class ) {
+                       } elseif ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
+                               foreach ( $wgAdvertisedFeedTypes as $format ) {
                                        $tags[] = $this->feedLink(
                                                $format,
                                                $rctitle->getLocalURL( "feed={$format}" ),
@@ -1824,7 +1866,7 @@ class OutputPage {
                        }
                }
 
-               return implode( "\n\t", $tags ) . "\n";
+               return implode( "\n", $tags );
        }
 
        /**
@@ -1832,28 +1874,14 @@ class OutputPage {
         * @return array associating format keys with URLs
         */
        public function getSyndicationLinks() {
-               global $wgFeedClasses;
-               $links = array();
-
-               if( $this->isSyndicated() ) {
-                       if( is_string( $this->getFeedAppendQuery() ) ) {
-                               $appendQuery = "&" . $this->getFeedAppendQuery();
-                       } else {
-                               $appendQuery = "";
-                       }
-
-                       foreach( $wgFeedClasses as $format => $class ) {
-                               $links[$format] = $this->getTitle()->getLocalUrl( "feed=$format{$appendQuery}" );
-                       }
-               }
-               return $links;
+               return $this->mFeedLinks;
        }
 
        /**
         * Generate a <link rel/> for an RSS feed.
         */
        private function feedLink( $type, $url, $text ) {
-               return Xml::element( 'link', array(
+               return Html::element( 'link', array(
                        'rel' => 'alternate',
                        'type' => "application/$type+xml",
                        'title' => $text,
@@ -1901,7 +1929,7 @@ class OutputPage {
                                $links[] = $link;
                }
 
-               return "\t" . implode( "\n\t", $links );
+               return implode( "\n", $links );
        }
 
        protected function styleLink( $style, $options ) {
@@ -1920,7 +1948,7 @@ class OutputPage {
                                return '';
                        }
                } else {
-                       $media = null;
+                       $media = 'all';
                }
 
                if( substr( $style, 0, 1 ) == '/' ||
@@ -2020,13 +2048,13 @@ class OutputPage {
         * @param int $lag Slave lag
         */
        public function showLagWarning( $lag ) {
-               global $wgSlaveLagWarning, $wgSlaveLagCritical;
+               global $wgSlaveLagWarning, $wgSlaveLagCritical, $wgLang;
                if( $lag >= $wgSlaveLagWarning ) {
                        $message = $lag < $wgSlaveLagCritical
                                ? 'lag-warn-normal'
                                : 'lag-warn-high';
-                       $warning = wfMsgExt( $message, 'parse', $lag );
-                       $this->addHTML( "<div class=\"mw-{$message}\">\n{$warning}\n</div>\n" );
+                       $wrap = Html::rawElement( 'div', array( 'class' => "mw-{$message}" ), "\n$1\n" );
+                       $this->wrapWikiMsg( "$wrap\n", array( $message, $wgLang->formatNum( $lag ) ) );
                }
        }
 
@@ -2071,11 +2099,13 @@ class OutputPage {
         *
         * For example:
         *
-        *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
+        *    $wgOut->wrapWikiMsg( "<div class='error'>\n$1</div>", 'some-error' );
         *
         * Is equivalent to:
         *
-        *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
+        *    $wgOut->addWikiText( "<div class='error'>\n" . wfMsgNoTrans( 'some-error' ) . '</div>' );
+        *
+        * The newline after opening div is needed in some wikitext. See bug 19226.
         */
        public function wrapWikiMsg( $wrap /*, ...*/ ) {
                $msgSpecs = func_get_args();
@@ -2099,4 +2129,22 @@ class OutputPage {
                }
                $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
        }
+
+       /**
+        * Include jQuery core. Use this to avoid loading it multiple times
+        * before we get usable script loader.
+        */
+       public function includeJQuery() {
+               if ( $this->mIncludeJQuery ) return;
+               $this->mIncludeJQuery = true;
+
+               global $wgScriptPath, $wgStyleVersion, $wgJsMimeType;
+
+               $params = array(
+                       'type' => $wgJsMimeType,
+                       'src' => "$wgScriptPath/js2/js2stopgap.min.js?$wgStyleVersion",
+               );
+               $this->mScripts = Html::element( 'script', $params ) . "\n" . $this->mScripts;
+       }
+
 }