includes/OutputPage.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4
   5 /**
   6  * @todo document
   7  */
   8 class OutputPage {
   9         var $mMetatags = array(), $mKeywords = array(), $mLinktags = array();
  10         var $mExtStyles = array();
  11         var $mPagetitle = '', $mBodytext = '', $mDebugtext = '';
  12         var $mHTMLtitle = '', $mIsarticle = true, $mPrintable = false;
  13         var $mSubtitle = '', $mRedirect = '', $mStatusCode;
  14         var $mLastModified = '', $mETag = false;
  15         var $mCategoryLinks = array(), $mLanguageLinks = array();
  16
  17         var $mScriptLoaderClassList = array();
  18
  19         var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
  20         var $mInlineMsg = array();
  21
  22         var $mTemplateIds = array();
  23
  24         var $mAllowUserJs;
  25         var $mSuppressQuickbar = false;
  26         var $mOnloadHandler = '';
  27         var $mDoNothing = false;
  28         var $mContainsOldMagic = 0, $mContainsNewMagic = 0;
  29         var $mIsArticleRelated = true;
  30         protected $mParserOptions = null; // lazy initialised, use parserOptions()
  31         var $mShowFeedLinks = false;
  32         var $mFeedLinksAppendQuery = false;
  33         var $mEnableClientCache = true;
  34         var $mArticleBodyOnly = false;
  35
  36         var $mNewSectionLink = false;
  37         var $mHideNewSectionLink = false;
  38         var $mNoGallery = false;
  39         var $mPageTitleActionText = '';
  40         var $mParseWarnings = array();
  41         var $mSquidMaxage = 0;
  42         var $mRevisionId = null;
  43         protected $mTitle = null;
  44
  45         /**
  46          * An array of stylesheet filenames (relative from skins path), with options
  47          * for CSS media, IE conditions, and RTL/LTR direction.
  48          * For internal use; add settings in the skin via $this->addStyle()
  49          */
  50         var $styles = array();
  51
  52         private $mIndexPolicy = 'index';
  53         private $mFollowPolicy = 'follow';
  54
  55         /**
  56          * Constructor
  57          * Initialise private variables
  58          */
  59         function __construct() {
  60                 global $wgAllowUserJs;
  61                 $this->mAllowUserJs = $wgAllowUserJs;
  62         }
  63
  64         public function redirect( $url, $responsecode = '302' ) {
  65                 # Strip newlines as a paranoia check for header injection in PHP<5.1.2
  66                 $this->mRedirect = str_replace( "\n", '', $url );
  67                 $this->mRedirectCode = $responsecode;
  68         }
  69
  70         public function getRedirect() {
  71                 return $this->mRedirect;
  72         }
  73
  74         /**
  75          * Set the HTTP status code to send with the output.
  76          *
  77          * @param int $statusCode
  78          * @return nothing
  79          */
  80         function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
  81
  82         /**
  83          * Add a new <meta> tag
  84          * To add an http-equiv meta tag, precede the name with "http:"
  85          *
  86          * @param $name tag name
  87          * @param $val tag value
  88          */
  89         function addMeta( $name, $val ) {
  90                 array_push( $this->mMetatags, array( $name, $val ) );
  91         }
  92
  93         function addKeyword( $text ) {
  94                 if( is_array( $text )) {
  95                         $this->mKeywords = array_merge( $this->mKeywords, $text );
  96                 } else {
  97                         array_push( $this->mKeywords, $text );
  98                 }
  99         }
 100         function addScript( $script ) {
 101                 $this->mScripts .= $script . "\n";
 102         }
 103
 104         /**
 105          * Register and add a stylesheet from an extension directory.
 106          * @param $url String path to sheet.  Provide either a full url (beginning
 107          *             with 'http', etc) or a relative path from the document root
 108          *             (beginning with '/').  Otherwise it behaves identically to
 109          *             addStyle() and draws from the /skins folder.
 110          */
 111         public function addExtensionStyle( $url ) {
 112                 array_push( $this->mExtStyles, $url );
 113         }
 114
 115         /**
 116          * Add a JavaScript file out of skins/common, or a given relative path.
 117          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 118          */
 119         function addScriptFile( $file ) {
 120                 global $wgStylePath, $wgScript, $wgUser;
 121                 global $wgEnableScriptLoader, $wgScriptPath;
 122
 123                 if( substr( $file, 0, 1 ) == '/' ) {
 124                         $path = $file;
 125                 } else {
 126                         $path = "{$wgStylePath}/common/{$file}";
 127                 }
 128
 129                 // If the class can be determined, use the addScriptClass method
 130                 $js_class = $this->getJsClassFromPath( $path );
 131                 if( $js_class ) {
 132                         $this->addScriptClass( $js_class );
 133                         return true;
 134                 }
 135
 136                 //do checks for wiki-titles
 137                 if( strpos( $path, $wgScript ) !== false ) {
 138                         $reqPath = str_replace( $wgScript . '?', '', $path );
 139                         $reqArgs = explode( '&', $reqPath );
 140                         $reqSet = array();
 141
 142                         foreach( $reqArgs as $arg ) {
 143                                 list( $key, $var ) = explode( '=', $arg );
 144                                 $reqSet[$key] = $var;
 145                         }
 146
 147                         if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 148                                 $jsTitleClass = 'WT:' . $reqSet['title'];
 149                                 if( $wgEnableScriptLoader ) {
 150                                         // Extract any extra parameters (for now just skin)
 151                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' )
 152                                                 ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 153                                         $this->mScriptLoaderClassList[] = $jsTitleClass . $ext_param ;
 154                                         return true;
 155                                 }else{
 156                                         $this->addScript( Html::linkedScript(
 157                                                                 wfAppendQuery( $path, $this->getURIDparam( $jsTitleClass ) )
 158                                                         )
 159                                                 );
 160                                         return true;
 161                                 }
 162                         }
 163                 }
 164                 // If the script loader could not be used, just add the script to the header
 165                 $this->addScript( Html::linkedScript( wfAppendQuery( $path, $this->getURIDparam() ) ) );
 166         }
 167
 168         /**
 169          * Add the core scripts that are included on every page, for later output into the header
 170          *
 171          * this includes the conditional sitejs
 172          */
 173         function addCoreScripts2Top(){
 174                 global $wgEnableScriptLoader, $wgJSAutoloadLocalClasses, $wgScriptPath, $wgEnableJS2system;
 175                 global $wgUser, $wgJsMimeType;
 176                 // @todo We should deprecate wikibits in favor of some mv_embed pieces and jQuery
 177
 178                 if( $wgEnableJS2system ){
 179                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 180                 } else {
 181                         $core_classes = array( 'wikibits' );
 182                 }
 183
 184                 //make sure scripts are on top:
 185                 $postScripts = $this->mScripts;
 186                 $this->mScripts = '';
 187
 188                 if( $wgEnableScriptLoader ){
 189                         //directly add script_loader call
 190                         //(separate from other scriptloader calls that may include extensions with conditional js)
 191                         $this->mScripts = $this->getScriptLoaderJs( $core_classes );
 192                 } else {
 193                         $so = '';
 194                         foreach( $core_classes as $js_class ){
 195                                 $this->addScriptClass( $js_class );
 196                         }
 197                 }
 198                 //now re-append any scripts that got added prior to the addCoreScripts2Top call
 199                 $this->mScripts = $this->mScripts . $postScripts;
 200         }
 201
 202         /**
 203          * @param string $js_class Name of the JavaScript class
 204          * @return boolean False if the class wasn't found, true on success
 205          */
 206         function addScriptClass( $js_class ){
 207                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 208                                 $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath, $wgEnableJS2system;
 209
 210                 $path = jsScriptLoader::getJsPathFromClass( $js_class );
 211                 if( $path !== false ){
 212                         if( $wgEnableScriptLoader ) {
 213                                 // Register it with the script loader
 214                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ) {
 215                                         $this->mScriptLoaderClassList[] = $js_class;
 216                                 }
 217                         } else {
 218                                 // Source the script directly
 219                                 $path = $wgScriptPath . '/' . $path;
 220                                 $urlAppend = ( $wgDebugJavaScript ) ? time() : $this->getURIDparam( $js_class );
 221                                 $this->addScript( Html::linkedScript( "$path?$urlAppend" ) );
 222
 223                                 //merge in language text (if js2 is on and we have loadGM function)
 224                                 if( $wgEnableJS2system ){
 225                                         $inlineMsg = jsScriptLoader::getLocalizedMsgsFromClass( $js_class );
 226                                         if( $inlineMsg != '' )
 227                                                 $this->addScript( Html::inlineScript( $inlineMsg ));
 228                                 }
 229                         }
 230                         return true;
 231                 }
 232                 print "could not find: $js_class\n";
 233                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 234                 return false; // could not find the class
 235         }
 236
 237         /**
 238          * Get the <script> tag which will invoke the script loader
 239          * @param $classAry A class array which, if given, overrides $this->mScriptLoaderClassList
 240          */
 241         function getScriptLoaderJs( $classAry = array() ) {
 242                 global $wgRequest, $wgDebugJavaScript;
 243                 // If no class array was provided, use mScriptLoaderClassList
 244                 if( !count( $classAry ) ) {
 245                         $classAry = $this->mScriptLoaderClassList;
 246                 }
 247                 $class_list = implode( ',', $classAry );
 248
 249                 $debug_param = ( $wgDebugJavaScript ||
 250                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 251                                                  $wgRequest->getVal( 'debug' ) == '1' )
 252                                          ? '&debug=true' : '';
 253
 254                 return Html::linkedScript( wfScript( 'mwScriptLoader' ) .
 255                         "?class={$class_list}{$debug_param}&" . $this->getURIDparam( $classAry) ) . "\n";
 256         }
 257
 258         /**
 259          * Get the unique request ID parameter for the script-loader request
 260          */
 261         function getURIDparam( $classAry = array() ) {
 262                 global $wgDebugJavaScript, $wgStyleVersion, $IP, $wgScriptModifiedCheck;
 263                 if( $wgDebugJavaScript ) {
 264                         return 'urid=' . time();
 265                 } else {
 266                         //support single class_name attr
 267                         if( gettype( $classAry) == 'string'  ){
 268                                 $classAry = array( $classAry );
 269                         }
 270                         $ftime =  $frev = 0;
 271                         foreach( $classAry as $class ) {
 272                                 if( $wgScriptModifiedCheck ) {
 273                                         $js_path =  jsScriptLoader::getJsPathFromClass( $class );
 274                                         if( $js_path ) {
 275                                                 $cur_ftime = filemtime ( $IP ."/". $js_path );
 276                                                 if( $cur_ftime > $ftime )
 277                                                         $ftime = $cur_ftime;
 278                                         }
 279                                 }
 280                                 // Add the latest revision ID if the class set includes a WT (wiki title)
 281                                 if( substr($class, 0, 3) == 'WT:'){
 282                                         $title_str = substr($class, 3);
 283                                         $t = Title::newFromText( $title_str );
 284                                         if( $t && $t->exists() ) {
 285                                                 if( $t->getLatestRevID() > $frev  )
 286                                                         $frev = $t->getLatestRevID();
 287                                         }
 288                                 }
 289                         }
 290                         //build the actual unique request id:
 291                         $urid = "urid={$wgStyleVersion}";
 292
 293                         // Add the file modification time if set
 294                         if( $ftime != 0 )
 295                                 $urid .= "_" . $ftime;
 296
 297                         //add the wiki rev id if set
 298                         if( $frev != 0 )
 299                                 $urid.= "_" . $frev;
 300
 301                         return $urid;
 302                 }
 303         }
 304
 305         /**
 306          * Given a script path, get the JS class name, or false if no such path is registered.
 307          * @param $path string
 308          */
 309         function getJsClassFromPath( $path ) {
 310                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 311
 312                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 313                 foreach( $scriptLoaderPaths as $js_class => $js_path ) {
 314                         $js_path = "{$wgScriptPath}/{$js_path}";
 315                         if( $path == $js_path )
 316                                 return $js_class;
 317                 }
 318                 return false;
 319         }
 320
 321         /**
 322          * Add a self-contained script tag with the given contents
 323          * @param string $script JavaScript text, no <script> tags
 324          */
 325         function addInlineScript( $script ) {
 326                 $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
 327         }
 328
 329         /**
 330          * Get all registered JS and CSS tags for the header.
 331          */
 332         function getScript() {
 333                 global $wgEnableScriptLoader;
 334                 if( $wgEnableScriptLoader ){
 335                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 336                 } else {
 337                         return $this->mScripts . $this->getHeadItems();
 338                 }
 339         }
 340
 341         function getHeadItems() {
 342                 $s = '';
 343                 foreach ( $this->mHeadItems as $item ) {
 344                         $s .= $item;
 345                 }
 346                 return $s;
 347         }
 348
 349         function addHeadItem( $name, $value ) {
 350                 $this->mHeadItems[$name] = $value;
 351         }
 352
 353         function hasHeadItem( $name ) {
 354                 return isset( $this->mHeadItems[$name] );
 355         }
 356
 357         function setETag($tag) { $this->mETag = $tag; }
 358         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 359         function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 360
 361         function addLink( $linkarr ) {
 362                 # $linkarr should be an associative array of attributes. We'll escape on output.
 363                 array_push( $this->mLinktags, $linkarr );
 364         }
 365
 366         # Get all links added by extensions
 367         function getExtStyle() {
 368                 return $this->mExtStyles;
 369         }
 370
 371         function addMetadataLink( $linkarr ) {
 372                 # note: buggy CC software only reads first "meta" link
 373                 static $haveMeta = false;
 374                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 375                 $this->addLink( $linkarr );
 376                 $haveMeta = true;
 377         }
 378
 379         /**
 380          * checkLastModified tells the client to use the client-cached page if
 381          * possible. If sucessful, the OutputPage is disabled so that
 382          * any future call to OutputPage->output() have no effect.
 383          *
 384          * Side effect: sets mLastModified for Last-Modified header
 385          *
 386          * @return bool True iff cache-ok headers was sent.
 387          */
 388         function checkLastModified( $timestamp ) {
 389                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 390
 391                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 392                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 393                         return false;
 394                 }
 395                 if( !$wgCachePages ) {
 396                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 397                         return false;
 398                 }
 399                 if( $wgUser->getOption( 'nocache' ) ) {
 400                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 401                         return false;
 402                 }
 403
 404                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 405                 $modifiedTimes = array(
 406                         'page' => $timestamp,
 407                         'user' => $wgUser->getTouched(),
 408                         'epoch' => $wgCacheEpoch
 409                 );
 410                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 411
 412                 $maxModified = max( $modifiedTimes );
 413                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 414
 415                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 416                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 417                         return false;
 418                 }
 419
 420                 # Make debug info
 421                 $info = '';
 422                 foreach ( $modifiedTimes as $name => $value ) {
 423                         if ( $info !== '' ) {
 424                                 $info .= ', ';
 425                         }
 426                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 427                 }
 428
 429                 # IE sends sizes after the date like this:
 430                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 431                 # this breaks strtotime().
 432                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 433
 434                 wfSuppressWarnings(); // E_STRICT system time bitching
 435                 $clientHeaderTime = strtotime( $clientHeader );
 436                 wfRestoreWarnings();
 437                 if ( !$clientHeaderTime ) {
 438                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 439                         return false;
 440                 }
 441                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 442
 443                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 444                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 445                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 446                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 447                 if( $clientHeaderTime < $maxModified ) {
 448                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 449                         return false;
 450                 }
 451
 452                 # Not modified
 453                 # Give a 304 response code and disable body output
 454                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 455                 ini_set('zlib.output_compression', 0);
 456                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 457                 $this->sendCacheControl();
 458                 $this->disable();
 459
 460                 // Don't output a compressed blob when using ob_gzhandler;
 461                 // it's technically against HTTP spec and seems to confuse
 462                 // Firefox when the response gets split over two packets.
 463                 wfClearOutputBuffers();
 464
 465                 return true;
 466         }
 467
 468         function setPageTitleActionText( $text ) {
 469                 $this->mPageTitleActionText = $text;
 470         }
 471
 472         function getPageTitleActionText () {
 473                 if ( isset( $this->mPageTitleActionText ) ) {
 474                         return $this->mPageTitleActionText;
 475                 }
 476         }
 477
 478         /**
 479          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 480          *
 481          * @param $policy string The literal string to output as the contents of
 482          *   the meta tag.  Will be parsed according to the spec and output in
 483          *   standardized form.
 484          * @return null
 485          */
 486         public function setRobotPolicy( $policy ) {
 487                 $policy = Article::formatRobotPolicy( $policy );
 488
 489                 if( isset( $policy['index'] ) ){
 490                         $this->setIndexPolicy( $policy['index'] );
 491                 }
 492                 if( isset( $policy['follow'] ) ){
 493                         $this->setFollowPolicy( $policy['follow'] );
 494                 }
 495         }
 496
 497         /**
 498          * Set the index policy for the page, but leave the follow policy un-
 499          * touched.
 500          *
 501          * @param $policy string Either 'index' or 'noindex'.
 502          * @return null
 503          */
 504         public function setIndexPolicy( $policy ) {
 505                 $policy = trim( $policy );
 506                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 507                         $this->mIndexPolicy = $policy;
 508                 }
 509         }
 510
 511         /**
 512          * Set the follow policy for the page, but leave the index policy un-
 513          * touched.
 514          *
 515          * @param $policy string Either 'follow' or 'nofollow'.
 516          * @return null
 517          */
 518         public function setFollowPolicy( $policy ) {
 519                 $policy = trim( $policy );
 520                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 521                         $this->mFollowPolicy = $policy;
 522                 }
 523         }
 524
 525         /**
 526          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 527          */
 528         public function setHTMLTitle( $name ) {
 529                 $this->mHTMLtitle = $name;
 530         }
 531
 532         /**
 533          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 534          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 535          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 536          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 537          */
 538         public function setPageTitle( $name ) {
 539                 global $wgContLang;
 540                 $name = $wgContLang->convert( $name, true );
 541                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 542                 # but leave "<i>foobar</i>" alone
 543                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 544                 $this->mPagetitle = $nameWithTags;
 545
 546                 $taction =  $this->getPageTitleActionText();
 547                 if( !empty( $taction ) ) {
 548                         $name .= ' - '.$taction;
 549                 }
 550
 551                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 552                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 553         }
 554
 555         public function setTitle( $t ) {
 556                 $this->mTitle = $t;
 557         }
 558
 559         public function getTitle() {
 560                 if ( $this->mTitle instanceof Title ) {
 561                         return $this->mTitle;
 562                 }
 563                 else {
 564                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 565                         global $wgTitle;
 566                         return $wgTitle;
 567                 }
 568         }
 569
 570         public function getHTMLTitle() { return $this->mHTMLtitle; }
 571         public function getPageTitle() { return $this->mPagetitle; }
 572         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 573         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 574         public function getSubtitle() { return $this->mSubtitle; }
 575         public function isArticle() { return $this->mIsarticle; }
 576         public function setPrintable() { $this->mPrintable = true; }
 577         public function isPrintable() { return $this->mPrintable; }
 578         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 579         public function isSyndicated() { return $this->mShowFeedLinks; }
 580         public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
 581         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 582         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 583         public function getOnloadHandler() { return $this->mOnloadHandler; }
 584         public function disable() { $this->mDoNothing = true; }
 585         public function isDisabled() { return $this->mDoNothing; }
 586
 587         public function setArticleRelated( $v ) {
 588                 $this->mIsArticleRelated = $v;
 589                 if ( !$v ) {
 590                         $this->mIsarticle = false;
 591                 }
 592         }
 593         public function setArticleFlag( $v ) {
 594                 $this->mIsarticle = $v;
 595                 if ( $v ) {
 596                         $this->mIsArticleRelated = $v;
 597                 }
 598         }
 599
 600         public function isArticleRelated() { return $this->mIsArticleRelated; }
 601
 602         public function getLanguageLinks() { return $this->mLanguageLinks; }
 603         public function addLanguageLinks($newLinkArray) {
 604                 $this->mLanguageLinks += $newLinkArray;
 605         }
 606         public function setLanguageLinks($newLinkArray) {
 607                 $this->mLanguageLinks = $newLinkArray;
 608         }
 609
 610         public function getCategoryLinks() {
 611                 return $this->mCategoryLinks;
 612         }
 613
 614         /**
 615          * Add an array of categories, with names in the keys
 616          */
 617         public function addCategoryLinks( $categories ) {
 618                 global $wgUser, $wgContLang;
 619
 620                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 621                         return;
 622                 }
 623
 624                 # Add the links to a LinkBatch
 625                 $arr = array( NS_CATEGORY => $categories );
 626                 $lb = new LinkBatch;
 627                 $lb->setArray( $arr );
 628
 629                 # Fetch existence plus the hiddencat property
 630                 $dbr = wfGetDB( DB_SLAVE );
 631                 $pageTable = $dbr->tableName( 'page' );
 632                 $where = $lb->constructSet( 'page', $dbr );
 633                 $propsTable = $dbr->tableName( 'page_props' );
 634                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 635                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 636                 $res = $dbr->query( $sql, __METHOD__ );
 637
 638                 # Add the results to the link cache
 639                 $lb->addResultToCache( LinkCache::singleton(), $res );
 640
 641                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 642                 $categories = array_combine( array_keys( $categories ),
 643                         array_fill( 0, count( $categories ), 'normal' ) );
 644
 645                 # Mark hidden categories
 646                 foreach ( $res as $row ) {
 647                         if ( isset( $row->pp_value ) ) {
 648                                 $categories[$row->page_title] = 'hidden';
 649                         }
 650                 }
 651
 652                 # Add the remaining categories to the skin
 653                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 654                         $sk = $wgUser->getSkin();
 655                         foreach ( $categories as $category => $type ) {
 656                                 $origcategory = $category;
 657                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 658                                 $wgContLang->findVariantLink( $category, $title, true );
 659                                 if ( $category != $origcategory )
 660                                         if ( array_key_exists( $category, $categories ) )
 661                                                 continue;
 662                                 $text = $wgContLang->convertHtml( $title->getText() );
 663                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 664                         }
 665                 }
 666         }
 667
 668         public function setCategoryLinks($categories) {
 669                 $this->mCategoryLinks = array();
 670                 $this->addCategoryLinks($categories);
 671         }
 672
 673         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 674         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 675
 676         public function disallowUserJs() { $this->mAllowUserJs = false; }
 677         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 678
 679         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 680         public function addHTML( $text ) { $this->mBodytext .= $text; }
 681         public function clearHTML() { $this->mBodytext = ''; }
 682         public function getHTML() { return $this->mBodytext; }
 683         public function debug( $text ) { $this->mDebugtext .= $text; }
 684
 685         /* @deprecated */
 686         public function setParserOptions( $options ) {
 687                 wfDeprecated( __METHOD__ );
 688                 return $this->parserOptions( $options );
 689         }
 690
 691         public function parserOptions( $options = null ) {
 692                 if ( !$this->mParserOptions ) {
 693                         $this->mParserOptions = new ParserOptions;
 694                 }
 695                 return wfSetVar( $this->mParserOptions, $options );
 696         }
 697
 698         /**
 699          * Set the revision ID which will be seen by the wiki text parser
 700          * for things such as embedded {{REVISIONID}} variable use.
 701          * @param mixed $revid an integer, or NULL
 702          * @return mixed previous value
 703          */
 704         public function setRevisionId( $revid ) {
 705                 $val = is_null( $revid ) ? null : intval( $revid );
 706                 return wfSetVar( $this->mRevisionId, $val );
 707         }
 708
 709         public function getRevisionId() {
 710                 return $this->mRevisionId;
 711         }
 712
 713         /**
 714          * Convert wikitext to HTML and add it to the buffer
 715          * Default assumes that the current page title will
 716          * be used.
 717          *
 718          * @param string $text
 719          * @param bool   $linestart
 720          */
 721         public function addWikiText( $text, $linestart = true ) {
 722                 $title = $this->getTitle(); // Work arround E_STRICT
 723                 $this->addWikiTextTitle( $text, $title, $linestart );
 724         }
 725
 726         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 727                 $this->addWikiTextTitle($text, $title, $linestart);
 728         }
 729
 730         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 731                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 732         }
 733
 734         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 735                 global $wgParser;
 736
 737                 wfProfileIn( __METHOD__ );
 738
 739                 wfIncrStats( 'pcache_not_possible' );
 740
 741                 $popts = $this->parserOptions();
 742                 $oldTidy = $popts->setTidy( $tidy );
 743
 744                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 745                         $linestart, true, $this->mRevisionId );
 746
 747                 $popts->setTidy( $oldTidy );
 748
 749                 $this->addParserOutput( $parserOutput );
 750
 751                 wfProfileOut( __METHOD__ );
 752         }
 753
 754         /**
 755          * @todo document
 756          * @param ParserOutput object &$parserOutput
 757          */
 758         public function addParserOutputNoText( &$parserOutput ) {
 759                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 760
 761                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 762                 $this->addCategoryLinks( $parserOutput->getCategories() );
 763                 $this->mNewSectionLink = $parserOutput->getNewSection();
 764                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 765
 766                 $this->mParseWarnings = $parserOutput->getWarnings();
 767                 if ( $parserOutput->getCacheTime() == -1 ) {
 768                         $this->enableClientCache( false );
 769                 }
 770                 $this->mNoGallery = $parserOutput->getNoGallery();
 771                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 772                 // Versioning...
 773                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 774                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 775                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 776                         } else {
 777                                 $this->mTemplateIds[$ns] = $dbks;
 778                         }
 779                 }
 780                 // Page title
 781                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 782                         $this->setPageTitle( $dt );
 783                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 784                         $this->setPageTitle( $title );
 785
 786                 // Hooks registered in the object
 787                 global $wgParserOutputHooks;
 788                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 789                         list( $hookName, $data ) = $hookInfo;
 790                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 791                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 792                         }
 793                 }
 794
 795                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 796         }
 797
 798         /**
 799          * @todo document
 800          * @param ParserOutput &$parserOutput
 801          */
 802         function addParserOutput( &$parserOutput ) {
 803                 $this->addParserOutputNoText( $parserOutput );
 804                 $text = $parserOutput->getText();
 805                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 806                 $this->addHTML( $text );
 807         }
 808
 809         /**
 810          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 811          * Saves the text into the parser cache if possible.
 812          *
 813          * @param string  $text
 814          * @param Article $article
 815          * @param bool    $cache
 816          * @deprecated Use Article::outputWikitext
 817          */
 818         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 819                 global $wgParser;
 820
 821                 wfDeprecated( __METHOD__ );
 822
 823                 $popts = $this->parserOptions();
 824                 $popts->setTidy(true);
 825                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 826                         $popts, true, true, $this->mRevisionId );
 827                 $popts->setTidy(false);
 828                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 829                         $parserCache = ParserCache::singleton();
 830                         $parserCache->save( $parserOutput, $article, $popts);
 831                 }
 832
 833                 $this->addParserOutput( $parserOutput );
 834         }
 835
 836         /**
 837          * @deprecated use addWikiTextTidy()
 838          */
 839         public function addSecondaryWikiText( $text, $linestart = true ) {
 840                 wfDeprecated( __METHOD__ );
 841                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 842         }
 843
 844         /**
 845          * Add wikitext with tidy enabled
 846          */
 847         public function addWikiTextTidy(  $text, $linestart = true ) {
 848                 $title = $this->getTitle();
 849                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 850         }
 851
 852
 853         /**
 854          * Add the output of a QuickTemplate to the output buffer
 855          *
 856          * @param QuickTemplate $template
 857          */
 858         public function addTemplate( &$template ) {
 859                 ob_start();
 860                 $template->execute();
 861                 $this->addHTML( ob_get_contents() );
 862                 ob_end_clean();
 863         }
 864
 865         /**
 866          * Parse wikitext and return the HTML.
 867          *
 868          * @param string $text
 869          * @param bool   $linestart Is this the start of a line?
 870          * @param bool   $interface ??
 871          */
 872         public function parse( $text, $linestart = true, $interface = false ) {
 873                 global $wgParser;
 874                 if( is_null( $this->getTitle() ) ) {
 875                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 876                 }
 877                 $popts = $this->parserOptions();
 878                 if ( $interface) { $popts->setInterfaceMessage(true); }
 879                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 880                         $linestart, true, $this->mRevisionId );
 881                 if ( $interface) { $popts->setInterfaceMessage(false); }
 882                 return $parserOutput->getText();
 883         }
 884
 885         /** Parse wikitext, strip paragraphs, and return the HTML. */
 886         public function parseInline( $text, $linestart = true, $interface = false ) {
 887                 $parsed = $this->parse( $text, $linestart, $interface );
 888
 889                 $m = array();
 890                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 891                         $parsed = $m[1];
 892                 }
 893
 894                 return $parsed;
 895         }
 896
 897         /**
 898          * @param Article $article
 899          * @param User    $user
 900          *
 901          * @deprecated
 902          *
 903          * @return bool True if successful, else false.
 904          */
 905         public function tryParserCache( &$article ) {
 906                 wfDeprecated( __METHOD__ );
 907                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 908
 909                 if ($parserOutput !== false) {
 910                         $this->addParserOutput( $parserOutput );
 911                         return true;
 912                 } else {
 913                         return false;
 914                 }
 915         }
 916
 917         /**
 918          * @param int $maxage Maximum cache time on the Squid, in seconds.
 919          */
 920         public function setSquidMaxage( $maxage ) {
 921                 $this->mSquidMaxage = $maxage;
 922         }
 923
 924         /**
 925          * Use enableClientCache(false) to force it to send nocache headers
 926          * @param $state ??
 927          */
 928         public function enableClientCache( $state ) {
 929                 return wfSetVar( $this->mEnableClientCache, $state );
 930         }
 931
 932         function getCacheVaryCookies() {
 933                 global $wgCookiePrefix, $wgCacheVaryCookies;
 934                 static $cookies;
 935                 if ( $cookies === null ) {
 936                         $cookies = array_merge(
 937                                 array(
 938                                         "{$wgCookiePrefix}Token",
 939                                         "{$wgCookiePrefix}LoggedOut",
 940                                         session_name()
 941                                 ),
 942                                 $wgCacheVaryCookies
 943                         );
 944                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 945                 }
 946                 return $cookies;
 947         }
 948
 949         function uncacheableBecauseRequestVars() {
 950                 global $wgRequest;
 951                 return  $wgRequest->getText('useskin', false) === false
 952                         && $wgRequest->getText('uselang', false) === false;
 953         }
 954
 955         /**
 956          * Check if the request has a cache-varying cookie header
 957          * If it does, it's very important that we don't allow public caching
 958          */
 959         function haveCacheVaryCookies() {
 960                 global $wgRequest;
 961                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 962                 if ( $cookieHeader === false ) {
 963                         return false;
 964                 }
 965                 $cvCookies = $this->getCacheVaryCookies();
 966                 foreach ( $cvCookies as $cookieName ) {
 967                         # Check for a simple string match, like the way squid does it
 968                         if ( strpos( $cookieHeader, $cookieName ) ) {
 969                                 wfDebug( __METHOD__.": found $cookieName\n" );
 970                                 return true;
 971                         }
 972                 }
 973                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 974                 return false;
 975         }
 976
 977         /** Get a complete X-Vary-Options header */
 978         public function getXVO() {
 979                 $cvCookies = $this->getCacheVaryCookies();
 980                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
 981                 $first = true;
 982                 foreach ( $cvCookies as $cookieName ) {
 983                         if ( $first ) {
 984                                 $first = false;
 985                         } else {
 986                                 $xvo .= ';';
 987                         }
 988                         $xvo .= 'string-contains=' . $cookieName;
 989                 }
 990                 return $xvo;
 991         }
 992
 993         public function sendCacheControl() {
 994                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
 995
 996                 $response = $wgRequest->response();
 997                 if ($wgUseETag && $this->mETag)
 998                         $response->header("ETag: $this->mETag");
 999
1000                 # don't serve compressed data to clients who can't handle it
1001                 # maintain different caches for logged-in users and non-logged in ones
1002                 $response->header( 'Vary: Accept-Encoding, Cookie' );
1003
1004                 if ( $wgUseXVO ) {
1005                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1006                         $response->header( $this->getXVO() );
1007                 }
1008
1009                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1010                         if( $wgUseSquid && session_id() == '' &&
1011                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1012                         {
1013                                 if ( $wgUseESI ) {
1014                                         # We'll purge the proxy cache explicitly, but require end user agents
1015                                         # to revalidate against the proxy on each visit.
1016                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1017                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1018                                         # start with a shorter timeout for initial testing
1019                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1020                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1021                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1022                                 } else {
1023                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1024                                         # to revalidate against the proxy on each visit.
1025                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1026                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1027                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1028                                         # start with a shorter timeout for initial testing
1029                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1030                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1031                                 }
1032                         } else {
1033                                 # We do want clients to cache if they can, but they *must* check for updates
1034                                 # on revisiting the page.
1035                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1036                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1037                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1038                         }
1039                         if($this->mLastModified) {
1040                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1041                         }
1042                 } else {
1043                         wfDebug( __METHOD__ . ": no caching **\n", false );
1044
1045                         # In general, the absence of a last modified header should be enough to prevent
1046                         # the client from using its cache. We send a few other things just to make sure.
1047                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1048                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1049                         $response->header( 'Pragma: no-cache' );
1050                 }
1051         }
1052
1053         /**
1054          * Finally, all the text has been munged and accumulated into
1055          * the object, let's actually output it:
1056          */
1057         public function output() {
1058                 global $wgUser, $wgOutputEncoding, $wgRequest;
1059                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1060                 global $wgUseAjax, $wgAjaxWatch;
1061                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1062                 global $wgArticle;
1063
1064                 if( $this->mDoNothing ){
1065                         return;
1066                 }
1067                 wfProfileIn( __METHOD__ );
1068                 if ( '' != $this->mRedirect ) {
1069                         # Standards require redirect URLs to be absolute
1070                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1071                         if( $this->mRedirectCode == '301') {
1072                                 if( !$wgDebugRedirects ) {
1073                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1074                                 }
1075                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1076                         }
1077                         $this->sendCacheControl();
1078
1079                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1080                         if( $wgDebugRedirects ) {
1081                                 $url = htmlspecialchars( $this->mRedirect );
1082                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1083                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1084                                 print "</body>\n</html>\n";
1085                         } else {
1086                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1087                         }
1088                         wfProfileOut( __METHOD__ );
1089                         return;
1090                 }
1091                 elseif ( $this->mStatusCode )
1092                 {
1093                         $statusMessage = array(
1094                                 100 => 'Continue',
1095                                 101 => 'Switching Protocols',
1096                                 102 => 'Processing',
1097                                 200 => 'OK',
1098                                 201 => 'Created',
1099                                 202 => 'Accepted',
1100                                 203 => 'Non-Authoritative Information',
1101                                 204 => 'No Content',
1102                                 205 => 'Reset Content',
1103                                 206 => 'Partial Content',
1104                                 207 => 'Multi-Status',
1105                                 300 => 'Multiple Choices',
1106                                 301 => 'Moved Permanently',
1107                                 302 => 'Found',
1108                                 303 => 'See Other',
1109                                 304 => 'Not Modified',
1110                                 305 => 'Use Proxy',
1111                                 307 => 'Temporary Redirect',
1112                                 400 => 'Bad Request',
1113                                 401 => 'Unauthorized',
1114                                 402 => 'Payment Required',
1115                                 403 => 'Forbidden',
1116                                 404 => 'Not Found',
1117                                 405 => 'Method Not Allowed',
1118                                 406 => 'Not Acceptable',
1119                                 407 => 'Proxy Authentication Required',
1120                                 408 => 'Request Timeout',
1121                                 409 => 'Conflict',
1122                                 410 => 'Gone',
1123                                 411 => 'Length Required',
1124                                 412 => 'Precondition Failed',
1125                                 413 => 'Request Entity Too Large',
1126                                 414 => 'Request-URI Too Large',
1127                                 415 => 'Unsupported Media Type',
1128                                 416 => 'Request Range Not Satisfiable',
1129                                 417 => 'Expectation Failed',
1130                                 422 => 'Unprocessable Entity',
1131                                 423 => 'Locked',
1132                                 424 => 'Failed Dependency',
1133                                 500 => 'Internal Server Error',
1134                                 501 => 'Not Implemented',
1135                                 502 => 'Bad Gateway',
1136                                 503 => 'Service Unavailable',
1137                                 504 => 'Gateway Timeout',
1138                                 505 => 'HTTP Version Not Supported',
1139                                 507 => 'Insufficient Storage'
1140                         );
1141
1142                         if ( $statusMessage[$this->mStatusCode] )
1143                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1144                 }
1145
1146                 $sk = $wgUser->getSkin();
1147
1148                 // Add our core scripts to output
1149                 $this->addCoreScripts2Top();
1150
1151                 if ( $wgUseAjax ) {
1152                         $this->addScriptFile( 'ajax.js' );
1153
1154                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1155
1156                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1157                                 $this->addScriptFile( 'ajaxwatch.js' );
1158                         }
1159
1160                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1161                                 $this->addScriptFile( 'mwsuggest.js' );
1162                         }
1163                 }
1164
1165                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1166                         $this->addScriptFile( 'rightclickedit.js' );
1167                 }
1168
1169                 global $wgUseAJAXCategories, $wgEnableJS2system;
1170                 if ($wgUseAJAXCategories && $wgEnableJS2system) {
1171                         global $wgAJAXCategoriesNamespaces;
1172
1173                         $title = $this->getTitle();
1174
1175                         if( empty( $wgAJAXCategoriesNamespaces ) || in_array( $title->getNamespace(), $wgAJAXCategoriesNamespaces ) ) {
1176                                 $this->addScriptClass( 'ajaxCategories' );
1177                         }
1178                 }
1179
1180                 if( $wgUniversalEditButton ) {
1181                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1182                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1183                                 // Original UniversalEditButton
1184                                 $msg = wfMsg('edit');
1185                                 $this->addLink( array(
1186                                         'rel' => 'alternate',
1187                                         'type' => 'application/x-wiki',
1188                                         'title' => $msg,
1189                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1190                                 ) );
1191                                 // Alternate edit link
1192                                 $this->addLink( array(
1193                                         'rel' => 'edit',
1194                                         'title' => $msg,
1195                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1196                                 ) );
1197                         }
1198                 }
1199
1200                 # Buffer output; final headers may depend on later processing
1201                 ob_start();
1202
1203                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1204                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1205
1206                 if ($this->mArticleBodyOnly) {
1207                         $this->out($this->mBodytext);
1208                 } else {
1209                         // Hook that allows last minute changes to the output page, e.g.
1210                         // adding of CSS or Javascript by extensions.
1211                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1212
1213                         wfProfileIn( 'Output-skin' );
1214                         $sk->outputPage( $this );
1215                         wfProfileOut( 'Output-skin' );
1216                 }
1217
1218                 $this->sendCacheControl();
1219                 ob_end_flush();
1220                 wfProfileOut( __METHOD__ );
1221         }
1222
1223         /**
1224          * Actually output something with print(). Performs an iconv to the
1225          * output encoding, if needed.
1226          * @param string $ins The string to output
1227          */
1228         public function out( $ins ) {
1229                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1230                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1231                         $outs = $ins;
1232                 } else {
1233                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1234                         if ( false === $outs ) { $outs = $ins; }
1235                 }
1236                 print $outs;
1237         }
1238
1239         /**
1240          * @todo document
1241          */
1242         public static function setEncodings() {
1243                 global $wgInputEncoding, $wgOutputEncoding;
1244                 global $wgContLang;
1245
1246                 $wgInputEncoding = strtolower( $wgInputEncoding );
1247
1248                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1249                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1250                         return;
1251                 }
1252                 $wgOutputEncoding = $wgInputEncoding;
1253         }
1254
1255         /**
1256          * Deprecated, use wfReportTime() instead.
1257          * @return string
1258          * @deprecated
1259          */
1260         public function reportTime() {
1261                 wfDeprecated( __METHOD__ );
1262                 $time = wfReportTime();
1263                 return $time;
1264         }
1265
1266         /**
1267          * Produce a "user is blocked" page.
1268          *
1269          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1270          * @return nothing
1271          */
1272         function blockedPage( $return = true ) {
1273                 global $wgUser, $wgContLang, $wgLang;
1274
1275                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1276                 $this->setRobotPolicy( 'noindex,nofollow' );
1277                 $this->setArticleRelated( false );
1278
1279                 $name = User::whoIs( $wgUser->blockedBy() );
1280                 $reason = $wgUser->blockedFor();
1281                 if( $reason == '' ) {
1282                         $reason = wfMsg( 'blockednoreason' );
1283                 }
1284                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1285                 $ip = wfGetIP();
1286
1287                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1288
1289                 $blockid = $wgUser->mBlock->mId;
1290
1291                 $blockExpiry = $wgUser->mBlock->mExpiry;
1292                 if ( $blockExpiry == 'infinity' ) {
1293                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1294                         // Search for localization in 'ipboptions'
1295                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1296                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1297                                 if ( strpos( $option, ":" ) === false )
1298                                         continue;
1299                                 list( $show, $value ) = explode( ":", $option );
1300                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1301                                         $blockExpiry = $show;
1302                                         break;
1303                                 }
1304                         }
1305                 } else {
1306                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1307                 }
1308
1309                 if ( $wgUser->mBlock->mAuto ) {
1310                         $msg = 'autoblockedtext';
1311                 } else {
1312                         $msg = 'blockedtext';
1313                 }
1314
1315                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1316                  * This could be a username, an ip range, or a single ip. */
1317                 $intended = $wgUser->mBlock->mAddress;
1318
1319                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1320
1321                 # Don't auto-return to special pages
1322                 if( $return ) {
1323                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1324                         $this->returnToMain( null, $return );
1325                 }
1326         }
1327
1328         /**
1329          * Output a standard error page
1330          *
1331          * @param string $title Message key for page title
1332          * @param string $msg Message key for page text
1333          * @param array $params Message parameters
1334          */
1335         public function showErrorPage( $title, $msg, $params = array() ) {
1336                 if ( $this->getTitle() ) {
1337                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1338                 }
1339                 $this->setPageTitle( wfMsg( $title ) );
1340                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1341                 $this->setRobotPolicy( 'noindex,nofollow' );
1342                 $this->setArticleRelated( false );
1343                 $this->enableClientCache( false );
1344                 $this->mRedirect = '';
1345                 $this->mBodytext = '';
1346
1347                 array_unshift( $params, 'parse' );
1348                 array_unshift( $params, $msg );
1349                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1350
1351                 $this->returnToMain();
1352         }
1353
1354         /**
1355          * Output a standard permission error page
1356          *
1357          * @param array $errors Error message keys
1358          */
1359         public function showPermissionsErrorPage( $errors, $action = null )
1360         {
1361                 $this->mDebugtext .= 'Original title: ' .
1362                 $this->getTitle()->getPrefixedText() . "\n";
1363                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1364                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1365                 $this->setRobotPolicy( 'noindex,nofollow' );
1366                 $this->setArticleRelated( false );
1367                 $this->enableClientCache( false );
1368                 $this->mRedirect = '';
1369                 $this->mBodytext = '';
1370                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1371         }
1372
1373         /** @deprecated */
1374         public function errorpage( $title, $msg ) {
1375                 wfDeprecated( __METHOD__ );
1376                 throw new ErrorPageError( $title, $msg );
1377         }
1378
1379         /**
1380          * Display an error page indicating that a given version of MediaWiki is
1381          * required to use it
1382          *
1383          * @param mixed $version The version of MediaWiki needed to use the page
1384          */
1385         public function versionRequired( $version ) {
1386                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1387                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1388                 $this->setRobotPolicy( 'noindex,nofollow' );
1389                 $this->setArticleRelated( false );
1390                 $this->mBodytext = '';
1391
1392                 $this->addWikiMsg( 'versionrequiredtext', $version );
1393                 $this->returnToMain();
1394         }
1395
1396         /**
1397          * Display an error page noting that a given permission bit is required.
1398          *
1399          * @param string $permission key required
1400          */
1401         public function permissionRequired( $permission ) {
1402                 global $wgLang;
1403
1404                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1405                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1406                 $this->setRobotPolicy( 'noindex,nofollow' );
1407                 $this->setArticleRelated( false );
1408                 $this->mBodytext = '';
1409
1410                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1411                         User::getGroupsWithPermission( $permission ) );
1412                 if( $groups ) {
1413                         $this->addWikiMsg( 'badaccess-groups',
1414                                 $wgLang->commaList( $groups ),
1415                                 count( $groups) );
1416                 } else {
1417                         $this->addWikiMsg( 'badaccess-group0' );
1418                 }
1419                 $this->returnToMain();
1420         }
1421
1422         /**
1423          * Use permissionRequired.
1424          * @deprecated
1425          */
1426         public function sysopRequired() {
1427                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1428         }
1429
1430         /**
1431          * Use permissionRequired.
1432          * @deprecated
1433          */
1434         public function developerRequired() {
1435                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1436         }
1437
1438         /**
1439          * Produce the stock "please login to use the wiki" page
1440          */
1441         public function loginToUse() {
1442                 global $wgUser, $wgContLang;
1443
1444                 if( $wgUser->isLoggedIn() ) {
1445                         $this->permissionRequired( 'read' );
1446                         return;
1447                 }
1448
1449                 $skin = $wgUser->getSkin();
1450
1451                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1452                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1453                 $this->setRobotPolicy( 'noindex,nofollow' );
1454                 $this->setArticleFlag( false );
1455
1456                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1457                 $loginLink = $skin->link(
1458                         $loginTitle,
1459                         wfMsgHtml( 'loginreqlink' ),
1460                         array(),
1461                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1462                         array( 'known', 'noclasses' )
1463                 );
1464                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1465                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1466
1467                 # Don't return to the main page if the user can't read it
1468                 # otherwise we'll end up in a pointless loop
1469                 $mainPage = Title::newMainPage();
1470                 if( $mainPage->userCanRead() )
1471                         $this->returnToMain( null, $mainPage );
1472         }
1473
1474         /** @deprecated */
1475         public function databaseError( $fname, $sql, $error, $errno ) {
1476                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1477         }
1478
1479         /**
1480          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1481          * @return string The wikitext error-messages, formatted into a list.
1482          */
1483         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1484                 if ($action == null) {
1485                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1486                 } else {
1487                         global $wgLang;
1488                         $action_desc = wfMsgNoTrans( "action-$action" );
1489                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1490                 }
1491
1492                 if (count( $errors ) > 1) {
1493                         $text .= '<ul class="permissions-errors">' . "\n";
1494
1495                         foreach( $errors as $error )
1496                         {
1497                                 $text .= '<li>';
1498                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1499                                 $text .= "</li>\n";
1500                         }
1501                         $text .= '</ul>';
1502                 } else {
1503                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1504                 }
1505
1506                 return $text;
1507         }
1508
1509         /**
1510          * Display a page stating that the Wiki is in read-only mode,
1511          * and optionally show the source of the page that the user
1512          * was trying to edit.  Should only be called (for this
1513          * purpose) after wfReadOnly() has returned true.
1514          *
1515          * For historical reasons, this function is _also_ used to
1516          * show the error message when a user tries to edit a page
1517          * they are not allowed to edit.  (Unless it's because they're
1518          * blocked, then we show blockedPage() instead.)  In this
1519          * case, the second parameter should be set to true and a list
1520          * of reasons supplied as the third parameter.
1521          *
1522          * @todo Needs to be split into multiple functions.
1523          *
1524          * @param string $source    Source code to show (or null).
1525          * @param bool   $protected Is this a permissions error?
1526          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1527          */
1528         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1529                 global $wgUser;
1530                 $skin = $wgUser->getSkin();
1531
1532                 $this->setRobotPolicy( 'noindex,nofollow' );
1533                 $this->setArticleRelated( false );
1534
1535                 // If no reason is given, just supply a default "I can't let you do
1536                 // that, Dave" message.  Should only occur if called by legacy code.
1537                 if ( $protected && empty($reasons) ) {
1538                         $reasons[] = array( 'badaccess-group0' );
1539                 }
1540
1541                 if ( !empty($reasons) ) {
1542                         // Permissions error
1543                         if( $source ) {
1544                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1545                                 $this->setSubtitle(
1546                                         wfMsg(
1547                                                 'viewsourcefor',
1548                                                 $skin->link(
1549                                                         $this->getTitle(),
1550                                                         null,
1551                                                         array(),
1552                                                         array(),
1553                                                         array( 'known', 'noclasses' )
1554                                                 )
1555                                         )
1556                                 );
1557                         } else {
1558                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1559                         }
1560                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1561                 } else {
1562                         // Wiki is read only
1563                         $this->setPageTitle( wfMsg( 'readonly' ) );
1564                         $reason = wfReadOnlyReason();
1565                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1566                 }
1567
1568                 // Show source, if supplied
1569                 if( is_string( $source ) ) {
1570                         $this->addWikiMsg( 'viewsourcetext' );
1571
1572                         $params = array(
1573                                 'id'   => 'wpTextbox1',
1574                                 'name' => 'wpTextbox1',
1575                                 'cols' => $wgUser->getOption( 'cols' ),
1576                                 'rows' => $wgUser->getOption( 'rows' ),
1577                                 'readonly' => 'readonly'
1578                         );
1579                         $this->addHTML( Html::element( 'textarea', $params, $source ) );
1580
1581                         // Show templates used by this article
1582                         $skin = $wgUser->getSkin();
1583                         $article = new Article( $this->getTitle() );
1584                         $this->addHTML( "<div class='templatesUsed'>
1585 {$skin->formatTemplates( $article->getUsedTemplates() )}
1586 </div>
1587 " );
1588                 }
1589
1590                 # If the title doesn't exist, it's fairly pointless to print a return
1591                 # link to it.  After all, you just tried editing it and couldn't, so
1592                 # what's there to do there?
1593                 if( $this->getTitle()->exists() ) {
1594                         $this->returnToMain( null, $this->getTitle() );
1595                 }
1596         }
1597
1598         /** @deprecated */
1599         public function fatalError( $message ) {
1600                 wfDeprecated( __METHOD__ );
1601                 throw new FatalError( $message );
1602         }
1603
1604         /** @deprecated */
1605         public function unexpectedValueError( $name, $val ) {
1606                 wfDeprecated( __METHOD__ );
1607                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1608         }
1609
1610         /** @deprecated */
1611         public function fileCopyError( $old, $new ) {
1612                 wfDeprecated( __METHOD__ );
1613                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1614         }
1615
1616         /** @deprecated */
1617         public function fileRenameError( $old, $new ) {
1618                 wfDeprecated( __METHOD__ );
1619                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1620         }
1621
1622         /** @deprecated */
1623         public function fileDeleteError( $name ) {
1624                 wfDeprecated( __METHOD__ );
1625                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1626         }
1627
1628         /** @deprecated */
1629         public function fileNotFoundError( $name ) {
1630                 wfDeprecated( __METHOD__ );
1631                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1632         }
1633
1634         public function showFatalError( $message ) {
1635                 $this->setPageTitle( wfMsg( "internalerror" ) );
1636                 $this->setRobotPolicy( "noindex,nofollow" );
1637                 $this->setArticleRelated( false );
1638                 $this->enableClientCache( false );
1639                 $this->mRedirect = '';
1640                 $this->mBodytext = $message;
1641         }
1642
1643         public function showUnexpectedValueError( $name, $val ) {
1644                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1645         }
1646
1647         public function showFileCopyError( $old, $new ) {
1648                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1649         }
1650
1651         public function showFileRenameError( $old, $new ) {
1652                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1653         }
1654
1655         public function showFileDeleteError( $name ) {
1656                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1657         }
1658
1659         public function showFileNotFoundError( $name ) {
1660                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1661         }
1662
1663         /**
1664          * Add a "return to" link pointing to a specified title
1665          *
1666          * @param Title $title Title to link
1667          * @param string $query Query string
1668          */
1669         public function addReturnTo( $title, $query = array() ) {
1670                 global $wgUser;
1671                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1672                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1673                         $title, null, array(), $query ) );
1674                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1675         }
1676
1677         /**
1678          * Add a "return to" link pointing to a specified title,
1679          * or the title indicated in the request, or else the main page
1680          *
1681          * @param null $unused No longer used
1682          * @param Title $returnto Title to return to
1683          */
1684         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1685                 global $wgRequest;
1686
1687                 if ( $returnto == null ) {
1688                         $returnto = $wgRequest->getText( 'returnto' );
1689                 }
1690
1691                 if ( $returntoquery == null ) {
1692                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1693                 }
1694
1695                 if ( '' === $returnto ) {
1696                         $returnto = Title::newMainPage();
1697                 }
1698
1699                 if ( is_object( $returnto ) ) {
1700                         $titleObj = $returnto;
1701                 } else {
1702                         $titleObj = Title::newFromText( $returnto );
1703                 }
1704                 if ( !is_object( $titleObj ) ) {
1705                         $titleObj = Title::newMainPage();
1706                 }
1707
1708                 $this->addReturnTo( $titleObj, $returntoquery );
1709         }
1710
1711         /**
1712          * @return string The doctype, opening <html>, and head element.
1713          *
1714          * @param $sk Skin The given Skin
1715          */
1716         public function headElement( Skin $sk, $includeStyle = true ) {
1717                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1718                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1719                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1720
1721                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1722                 if ( $sk->commonPrintStylesheet() ) {
1723                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1724                 }
1725                 $sk->setupUserCss( $this );
1726
1727                 $ret = '';
1728
1729                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1730                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1731                 }
1732
1733                 if ( '' == $this->getHTMLTitle() ) {
1734                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1735                 }
1736
1737                 $dir = $wgContLang->getDir();
1738
1739                 if ( $wgHtml5 ) {
1740                         $ret .= "<!doctype html>\n";
1741                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1742                 } else {
1743                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1744                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1745                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1746                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1747                         }
1748                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1749                 }
1750
1751                 $ret .= "<head>\n";
1752                 $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1753                 $ret .= implode( "\n", array(
1754                         $this->getHeadLinks(),
1755                         $this->buildCssLinks(),
1756                         $this->getHeadScripts( $sk ),
1757                         $this->getHeadItems(),
1758                 ));
1759                 if( $sk->usercss ){
1760                         $ret .= Html::inlineStyle( $sk->usercss );
1761                 }
1762
1763                 if( $wgEnableScriptLoader )
1764                         $ret .= $this->getScriptLoaderJs();
1765
1766                 if ($wgUseTrackbacks && $this->isArticleRelated())
1767                         $ret .= $this->getTitle()->trackbackRDF();
1768
1769                 $ret .= "</head>\n";
1770                 return $ret;
1771         }
1772
1773         /*
1774          * gets the global variables and mScripts
1775          *
1776          * also adds userjs to the end if enabled:
1777         */
1778         function getHeadScripts( Skin $sk ) {
1779                 global $wgUser, $wgRequest, $wgJsMimeType, $wgUseSiteJs;
1780
1781                 $vars = Skin::makeGlobalVariablesScript( $sk->getSkinName() );
1782
1783                 //add site JS if enabled:
1784                 if( $wgUseSiteJs ) {
1785                         $sk = $wgUser->getSkin();
1786                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
1787                         $this->addScriptFile(  Skin::makeUrl( '-',
1788                                         "action=raw$jsCache&gen=js&useskin=" .
1789                                         urlencode( $sk->getSkinName() )
1790                                         )
1791                                 );
1792                 }
1793
1794                 //add user js if enabled:
1795                 if( $this->isUserJsAllowed() && $wgUser->isLoggedIn() ) {
1796                         $action = $wgRequest->getVal( 'action', 'view' );
1797                         if( $this->mTitle->isJsSubpage() and $sk->userCanPreview( $action ) ) {
1798                                 # XXX: additional security check/prompt?
1799                                 $this->addInlineScript( $wgRequest->getText( 'wpTextbox1' ) );
1800                         } else {
1801                                 $userpage = $wgUser->getUserPage();
1802                                 $userjs = Skin::makeUrl(
1803                                         $userpage->getPrefixedText() . '/' . $sk->getSkinName() . '.js',
1804                                         'action=raw&ctype=' . $wgJsMimeType );
1805                                 $this->addScriptFile( $userjs );
1806                         }
1807                 }
1808
1809                 return $vars . "\n" . $this->mScripts;
1810         }
1811
1812         protected function addDefaultMeta() {
1813                 global $wgVersion, $wgHtml5;
1814
1815                 static $called = false;
1816                 if ( $called ) {
1817                         # Don't run this twice
1818                         return;
1819                 }
1820                 $called = true;
1821
1822                 if ( !$wgHtml5 ) {
1823                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1824                 }
1825                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1826
1827                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1828                 if( $p !== 'index,follow' ) {
1829                         // http://www.robotstxt.org/wc/meta-user.html
1830                         // Only show if it's different from the default robots policy
1831                         $this->addMeta( 'robots', $p );
1832                 }
1833
1834                 if ( count( $this->mKeywords ) > 0 ) {
1835                         $strip = array(
1836                                 "/<.*?" . ">/" => '',
1837                                 "/_/" => ' '
1838                         );
1839                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1840                 }
1841         }
1842
1843         /**
1844          * @return string HTML tag links to be put in the header.
1845          */
1846         public function getHeadLinks() {
1847                 global $wgRequest, $wgFeed;
1848
1849                 // Ideally this should happen earlier, somewhere. :P
1850                 $this->addDefaultMeta();
1851
1852                 $tags = array();
1853
1854                 foreach ( $this->mMetatags as $tag ) {
1855                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1856                                 $a = 'http-equiv';
1857                                 $tag[0] = substr( $tag[0], 5 );
1858                         } else {
1859                                 $a = 'name';
1860                         }
1861                         $tags[] = Html::element( 'meta',
1862                                 array(
1863                                         $a => $tag[0],
1864                                         'content' => $tag[1] ) );
1865                 }
1866                 foreach ( $this->mLinktags as $tag ) {
1867                         $tags[] = Html::element( 'link', $tag );
1868                 }
1869
1870                 if( $wgFeed ) {
1871                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1872                                 # Use the page name for the title (accessed through $wgTitle since
1873                                 # there's no other way).  In principle, this could lead to issues
1874                                 # with having the same name for different feeds corresponding to
1875                                 # the same page, but we can't avoid that at this low a level.
1876
1877                                 $tags[] = $this->feedLink(
1878                                         $format,
1879                                         $link,
1880                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1881                         }
1882
1883                         # Recent changes feed should appear on every page (except recentchanges,
1884                         # that would be redundant). Put it after the per-page feed to avoid
1885                         # changing existing behavior. It's still available, probably via a
1886                         # menu in your browser. Some sites might have a different feed they'd
1887                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1888                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1889                         # If so, use it instead.
1890
1891                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1892                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1893
1894                         if ( $wgOverrideSiteFeed ) {
1895                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1896                                         $tags[] = $this->feedLink (
1897                                                 $type,
1898                                                 htmlspecialchars( $feedUrl ),
1899                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1900                                 }
1901                         }
1902                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1903                                 foreach( $wgFeedClasses as $format => $class ) {
1904                                         $tags[] = $this->feedLink(
1905                                                 $format,
1906                                                 $rctitle->getLocalURL( "feed={$format}" ),
1907                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1908                                 }
1909                         }
1910                 }
1911
1912                 return implode( "\n", $tags );
1913         }
1914
1915         /**
1916          * Return URLs for each supported syndication format for this page.
1917          * @return array associating format keys with URLs
1918          */
1919         public function getSyndicationLinks() {
1920                 global $wgFeedClasses;
1921                 $links = array();
1922
1923                 if( $this->isSyndicated() ) {
1924                         if( is_string( $this->getFeedAppendQuery() ) ) {
1925                                 $appendQuery = "&" . $this->getFeedAppendQuery();
1926                         } else {
1927                                 $appendQuery = "";
1928                         }
1929
1930                         foreach( $wgFeedClasses as $format => $class ) {
1931                                 $links[$format] = $this->getTitle()->getLocalUrl( "feed=$format{$appendQuery}" );
1932                         }
1933                 }
1934                 return $links;
1935         }
1936
1937         /**
1938          * Generate a <link rel/> for an RSS feed.
1939          */
1940         private function feedLink( $type, $url, $text ) {
1941                 return Html::element( 'link', array(
1942                         'rel' => 'alternate',
1943                         'type' => "application/$type+xml",
1944                         'title' => $text,
1945                         'href' => $url ) );
1946         }
1947
1948         /**
1949          * Add a local or specified stylesheet, with the given media options.
1950          * Meant primarily for internal use...
1951          *
1952          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1953          * @param $conditional -- for IE conditional comments, specifying an IE version
1954          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1955          */
1956         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1957                 $options = array();
1958                 // Even though we expect the media type to be lowercase, but here we
1959                 // force it to lowercase to be safe.
1960                 if( $media )
1961                         $options['media'] = $media;
1962                 if( $condition )
1963                         $options['condition'] = $condition;
1964                 if( $dir )
1965                         $options['dir'] = $dir;
1966                 $this->styles[$style] = $options;
1967         }
1968
1969         /**
1970          * Adds inline CSS styles
1971          * @param $style_css Mixed: inline CSS
1972          */
1973         public function addInlineStyle( $style_css ){
1974                 $this->mScripts .= Html::inlineStyle( $style_css );
1975         }
1976
1977         /**
1978          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1979          * These will be applied to various media & IE conditionals.
1980          */
1981         public function buildCssLinks() {
1982                 $links = array();
1983                 foreach( $this->styles as $file => $options ) {
1984                         $link = $this->styleLink( $file, $options );
1985                         if( $link )
1986                                 $links[] = $link;
1987                 }
1988
1989                 return implode( "\n", $links );
1990         }
1991
1992         protected function styleLink( $style, $options ) {
1993                 global $wgRequest;
1994
1995                 if( isset( $options['dir'] ) ) {
1996                         global $wgContLang;
1997                         $siteDir = $wgContLang->getDir();
1998                         if( $siteDir != $options['dir'] )
1999                                 return '';
2000                 }
2001
2002                 if( isset( $options['media'] ) ) {
2003                         $media = $this->transformCssMedia( $options['media'] );
2004                         if( is_null( $media ) ) {
2005                                 return '';
2006                         }
2007                 } else {
2008                         $media = 'all';
2009                 }
2010
2011                 if( substr( $style, 0, 1 ) == '/' ||
2012                         substr( $style, 0, 5 ) == 'http:' ||
2013                         substr( $style, 0, 6 ) == 'https:' ) {
2014                         $url = $style;
2015                 } else {
2016                         global $wgStylePath, $wgStyleVersion;
2017                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
2018                 }
2019
2020                 $link = Html::linkedStyle( $url, $media );
2021
2022                 if( isset( $options['condition'] ) ) {
2023                         $condition = htmlspecialchars( $options['condition'] );
2024                         $link = "<!--[if $condition]>$link<![endif]-->";
2025                 }
2026                 return $link;
2027         }
2028
2029         function transformCssMedia( $media ) {
2030                 global $wgRequest, $wgHandheldForIPhone;
2031
2032                 // Switch in on-screen display for media testing
2033                 $switches = array(
2034                         'printable' => 'print',
2035                         'handheld' => 'handheld',
2036                 );
2037                 foreach( $switches as $switch => $targetMedia ) {
2038                         if( $wgRequest->getBool( $switch ) ) {
2039                                 if( $media == $targetMedia ) {
2040                                         $media = '';
2041                                 } elseif( $media == 'screen' ) {
2042                                         return null;
2043                                 }
2044                         }
2045                 }
2046
2047                 // Expand longer media queries as iPhone doesn't grok 'handheld'
2048                 if( $wgHandheldForIPhone ) {
2049                         $mediaAliases = array(
2050                                 'screen' => 'screen and (min-device-width: 481px)',
2051                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
2052                         );
2053
2054                         if( isset( $mediaAliases[$media] ) ) {
2055                                 $media = $mediaAliases[$media];
2056                         }
2057                 }
2058
2059                 return $media;
2060         }
2061
2062         /**
2063          * Turn off regular page output and return an error reponse
2064          * for when rate limiting has triggered.
2065          */
2066         public function rateLimited() {
2067
2068                 $this->setPageTitle(wfMsg('actionthrottled'));
2069                 $this->setRobotPolicy( 'noindex,follow' );
2070                 $this->setArticleRelated( false );
2071                 $this->enableClientCache( false );
2072                 $this->mRedirect = '';
2073                 $this->clearHTML();
2074                 $this->setStatusCode(503);
2075                 $this->addWikiMsg( 'actionthrottledtext' );
2076
2077                 $this->returnToMain( null, $this->getTitle() );
2078         }
2079
2080         /**
2081          * Show an "add new section" link?
2082          *
2083          * @return bool
2084          */
2085         public function showNewSectionLink() {
2086                 return $this->mNewSectionLink;
2087         }
2088
2089         /**
2090         * Forcibly hide the new section link?
2091         *
2092         * @return bool
2093         */
2094         public function forceHideNewSectionLink() {
2095                 return $this->mHideNewSectionLink;
2096         }
2097
2098         /**
2099          * Show a warning about slave lag
2100          *
2101          * If the lag is higher than $wgSlaveLagCritical seconds,
2102          * then the warning is a bit more obvious. If the lag is
2103          * lower than $wgSlaveLagWarning, then no warning is shown.
2104          *
2105          * @param int $lag Slave lag
2106          */
2107         public function showLagWarning( $lag ) {
2108                 global $wgSlaveLagWarning, $wgSlaveLagCritical, $wgLang;
2109                 if( $lag >= $wgSlaveLagWarning ) {
2110                         $message = $lag < $wgSlaveLagCritical
2111                                 ? 'lag-warn-normal'
2112                                 : 'lag-warn-high';
2113                         $wrap = Html::rawElement( 'div', array( 'class' => "mw-{$message}" ), "\n$1\n" );
2114                         $this->wrapWikiMsg( "$wrap\n", array( $message, $wgLang->formatNum( $lag ) ) );
2115                 }
2116         }
2117
2118         /**
2119          * Add a wikitext-formatted message to the output.
2120          * This is equivalent to:
2121          *
2122          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2123          */
2124         public function addWikiMsg( /*...*/ ) {
2125                 $args = func_get_args();
2126                 $name = array_shift( $args );
2127                 $this->addWikiMsgArray( $name, $args );
2128         }
2129
2130         /**
2131          * Add a wikitext-formatted message to the output.
2132          * Like addWikiMsg() except the parameters are taken as an array
2133          * instead of a variable argument list.
2134          *
2135          * $options is passed through to wfMsgExt(), see that function for details.
2136          */
2137         public function addWikiMsgArray( $name, $args, $options = array() ) {
2138                 $options[] = 'parse';
2139                 $text = wfMsgExt( $name, $options, $args );
2140                 $this->addHTML( $text );
2141         }
2142
2143         /**
2144          * This function takes a number of message/argument specifications, wraps them in
2145          * some overall structure, and then parses the result and adds it to the output.
2146          *
2147          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2148          * on. The subsequent arguments may either be strings, in which case they are the
2149          * message names, or arrays, in which case the first element is the message name,
2150          * and subsequent elements are the parameters to that message.
2151          *
2152          * The special named parameter 'options' in a message specification array is passed
2153          * through to the $options parameter of wfMsgExt().
2154          *
2155          * Don't use this for messages that are not in users interface language.
2156          *
2157          * For example:
2158          *
2159          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2160          *
2161          * Is equivalent to:
2162          *
2163          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2164          */
2165         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2166                 $msgSpecs = func_get_args();
2167                 array_shift( $msgSpecs );
2168                 $msgSpecs = array_values( $msgSpecs );
2169                 $s = $wrap;
2170                 foreach ( $msgSpecs as $n => $spec ) {
2171                         $options = array();
2172                         if ( is_array( $spec ) ) {
2173                                 $args = $spec;
2174                                 $name = array_shift( $args );
2175                                 if ( isset( $args['options'] ) ) {
2176                                         $options = $args['options'];
2177                                         unset( $args['options'] );
2178                                 }
2179                         }  else {
2180                                 $args = array();
2181                                 $name = $spec;
2182                         }
2183                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2184                 }
2185                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2186         }
2187 }