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 $wgUseSiteJs, $wgUser, $wgJsMimeType;
 176                 // @todo We should deprecate wikibits in favor of mv_embed 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
 199                 $sk = $wgUser->getSkin();
 200                 //add site js:
 201                 if( $wgUseSiteJs ) {
 202                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
 203                         $this->addScriptFile(  Skin::makeUrl( '-',
 204                                         "action=raw$jsCache&gen=js&useskin=" .
 205                                         urlencode( $sk->getSkinName() )
 206                                         )
 207                                 );
 208                 }
 209                 //now re-append any scripts that got added prior to the addCoreScripts2Top call
 210                 $this->mScripts = $this->mScripts . $postScripts;
 211         }
 212
 213         /**
 214          * @param string $js_class Name of the JavaScript class
 215          * @return boolean False if the class wasn't found, true on success
 216          */
 217         function addScriptClass( $js_class ){
 218                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 219                                 $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath, $wgEnableJS2system;
 220
 221                 $path = jsScriptLoader::getJsPathFromClass( $js_class );
 222                 if( $path !== false ){
 223                         if( $wgEnableScriptLoader ) {
 224                                 // Register it with the script loader
 225                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ) {
 226                                         $this->mScriptLoaderClassList[] = $js_class;
 227                                 }
 228                         } else {
 229                                 // Source the script directly
 230                                 $path = $wgScriptPath . '/' . $path;
 231                                 $urlAppend = ( $wgDebugJavaScript ) ? time() : $this->getURIDparam( $js_class );
 232                                 $this->addScript( Html::linkedScript( "$path?$urlAppend" ) );
 233
 234                                 //merge in language text (if js2 is on and we have loadGM function)
 235                                 if( $wgEnableJS2system ){
 236                                         $inlineMsg = jsScriptLoader::getLocalizedMsgsFromClass( $js_class );
 237                                         if( $inlineMsg != '' )
 238                                                 $this->addScript( Html::inlineScript( $inlineMsg ));
 239                                 }
 240                         }
 241                         return true;
 242                 }
 243                 print "could not find: $js_class\n";
 244                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 245                 return false; // could not find the class
 246         }
 247
 248         /**
 249          * Get the <script> tag which will invoke the script loader
 250          * @param $classAry A class array which, if given, overrides $this->mScriptLoaderClassList
 251          */
 252         function getScriptLoaderJs( $classAry = array() ) {
 253                 global $wgRequest, $wgDebugJavaScript;
 254                 // If no class array was provided, use mScriptLoaderClassList
 255                 if( !count( $classAry ) ) {
 256                         $classAry = $this->mScriptLoaderClassList;
 257                 }
 258                 $class_list = implode( ',', $classAry );
 259
 260                 $debug_param = ( $wgDebugJavaScript ||
 261                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 262                                                  $wgRequest->getVal( 'debug' ) == '1' )
 263                                          ? '&debug=true' : '';
 264
 265                 return Html::linkedScript( wfScript( 'mwScriptLoader' ) .
 266                         "?class={$class_list}{$debug_param}&" . $this->getURIDparam( $classAry) );
 267         }
 268
 269         /**
 270          * Get the unique request ID parameter for the script-loader request
 271          */
 272         function getURIDparam( $classAry = array() ) {
 273                 global $wgDebugJavaScript, $wgStyleVersion, $IP, $wgScriptModifiedCheck;
 274                 if( $wgDebugJavaScript ) {
 275                         return 'urid=' . time();
 276                 } else {
 277                         //support single class_name attr
 278                         if( gettype( $classAry) == 'string'  ){
 279                                 $classAry = array( $classAry );
 280                         }
 281                         $ftime =  $frev = 0;
 282                         foreach( $classAry as $class ) {
 283                                 if( $wgScriptModifiedCheck ) {
 284                                         $js_path =  jsScriptLoader::getJsPathFromClass( $class );
 285                                         if( $js_path ) {
 286                                                 $cur_ftime = filemtime ( $IP ."/". $js_path );
 287                                                 if( $cur_ftime > $ftime )
 288                                                         $ftime = $cur_ftime;
 289                                         }
 290                                 }
 291                                 // Add the latest revision ID if the class set includes a WT (wiki title)
 292                                 if( substr($class, 0, 3) == 'WT:'){
 293                                         $title_str = substr($class, 3);
 294                                         $t = Title::newFromText( $title_str );
 295                                         if( $t && $t->exists() ) {
 296                                                 if( $t->getLatestRevID() > $frev  )
 297                                                         $frev = $t->getLatestRevID();
 298                                         }
 299                                 }
 300                         }
 301                         //build the actual unique request id:
 302                         $urid = "urid={$wgStyleVersion}";
 303
 304                         // Add the file modification time if set
 305                         if( $ftime != 0 )
 306                                 $urid .= "_" . $ftime;
 307
 308                         //add the wiki rev id if set
 309                         if( $frev != 0 )
 310                                 $urid.= "_" . $frev;
 311
 312                         return $urid;
 313                 }
 314         }
 315
 316         /**
 317          * Given a script path, get the JS class name, or false if no such path is registered.
 318          * @param $path string
 319          */
 320         function getJsClassFromPath( $path ) {
 321                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 322
 323                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 324                 foreach( $scriptLoaderPaths as $js_class => $js_path ) {
 325                         $js_path = "{$wgScriptPath}/{$js_path}";
 326                         if( $path == $js_path )
 327                                 return $js_class;
 328                 }
 329                 return false;
 330         }
 331
 332         /**
 333          * Add a self-contained script tag with the given contents
 334          * @param string $script JavaScript text, no <script> tags
 335          */
 336         function addInlineScript( $script ) {
 337                 $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
 338         }
 339
 340         /**
 341          * Get all registered JS and CSS tags for the header.
 342          */
 343         function getScript() {
 344                 global $wgEnableScriptLoader;
 345                 if( $wgEnableScriptLoader ){
 346                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 347                 } else {
 348                         return $this->mScripts . $this->getHeadItems();
 349                 }
 350         }
 351
 352         function getHeadItems() {
 353                 $s = '';
 354                 foreach ( $this->mHeadItems as $item ) {
 355                         $s .= $item;
 356                 }
 357                 return $s;
 358         }
 359
 360         function addHeadItem( $name, $value ) {
 361                 $this->mHeadItems[$name] = $value;
 362         }
 363
 364         function hasHeadItem( $name ) {
 365                 return isset( $this->mHeadItems[$name] );
 366         }
 367
 368         function setETag($tag) { $this->mETag = $tag; }
 369         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 370         function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 371
 372         function addLink( $linkarr ) {
 373                 # $linkarr should be an associative array of attributes. We'll escape on output.
 374                 array_push( $this->mLinktags, $linkarr );
 375         }
 376
 377         # Get all links added by extensions
 378         function getExtStyle() {
 379                 return $this->mExtStyles;
 380         }
 381
 382         function addMetadataLink( $linkarr ) {
 383                 # note: buggy CC software only reads first "meta" link
 384                 static $haveMeta = false;
 385                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 386                 $this->addLink( $linkarr );
 387                 $haveMeta = true;
 388         }
 389
 390         /**
 391          * checkLastModified tells the client to use the client-cached page if
 392          * possible. If sucessful, the OutputPage is disabled so that
 393          * any future call to OutputPage->output() have no effect.
 394          *
 395          * Side effect: sets mLastModified for Last-Modified header
 396          *
 397          * @return bool True iff cache-ok headers was sent.
 398          */
 399         function checkLastModified( $timestamp ) {
 400                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 401
 402                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 403                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 404                         return false;
 405                 }
 406                 if( !$wgCachePages ) {
 407                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 408                         return false;
 409                 }
 410                 if( $wgUser->getOption( 'nocache' ) ) {
 411                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 412                         return false;
 413                 }
 414
 415                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 416                 $modifiedTimes = array(
 417                         'page' => $timestamp,
 418                         'user' => $wgUser->getTouched(),
 419                         'epoch' => $wgCacheEpoch
 420                 );
 421                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 422
 423                 $maxModified = max( $modifiedTimes );
 424                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 425
 426                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 427                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 428                         return false;
 429                 }
 430
 431                 # Make debug info
 432                 $info = '';
 433                 foreach ( $modifiedTimes as $name => $value ) {
 434                         if ( $info !== '' ) {
 435                                 $info .= ', ';
 436                         }
 437                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 438                 }
 439
 440                 # IE sends sizes after the date like this:
 441                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 442                 # this breaks strtotime().
 443                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 444
 445                 wfSuppressWarnings(); // E_STRICT system time bitching
 446                 $clientHeaderTime = strtotime( $clientHeader );
 447                 wfRestoreWarnings();
 448                 if ( !$clientHeaderTime ) {
 449                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 450                         return false;
 451                 }
 452                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 453
 454                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 455                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 456                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 457                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 458                 if( $clientHeaderTime < $maxModified ) {
 459                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 460                         return false;
 461                 }
 462
 463                 # Not modified
 464                 # Give a 304 response code and disable body output
 465                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 466                 ini_set('zlib.output_compression', 0);
 467                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 468                 $this->sendCacheControl();
 469                 $this->disable();
 470
 471                 // Don't output a compressed blob when using ob_gzhandler;
 472                 // it's technically against HTTP spec and seems to confuse
 473                 // Firefox when the response gets split over two packets.
 474                 wfClearOutputBuffers();
 475
 476                 return true;
 477         }
 478
 479         function setPageTitleActionText( $text ) {
 480                 $this->mPageTitleActionText = $text;
 481         }
 482
 483         function getPageTitleActionText () {
 484                 if ( isset( $this->mPageTitleActionText ) ) {
 485                         return $this->mPageTitleActionText;
 486                 }
 487         }
 488
 489         /**
 490          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 491          *
 492          * @param $policy string The literal string to output as the contents of
 493          *   the meta tag.  Will be parsed according to the spec and output in
 494          *   standardized form.
 495          * @return null
 496          */
 497         public function setRobotPolicy( $policy ) {
 498                 $policy = Article::formatRobotPolicy( $policy );
 499
 500                 if( isset( $policy['index'] ) ){
 501                         $this->setIndexPolicy( $policy['index'] );
 502                 }
 503                 if( isset( $policy['follow'] ) ){
 504                         $this->setFollowPolicy( $policy['follow'] );
 505                 }
 506         }
 507
 508         /**
 509          * Set the index policy for the page, but leave the follow policy un-
 510          * touched.
 511          *
 512          * @param $policy string Either 'index' or 'noindex'.
 513          * @return null
 514          */
 515         public function setIndexPolicy( $policy ) {
 516                 $policy = trim( $policy );
 517                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 518                         $this->mIndexPolicy = $policy;
 519                 }
 520         }
 521
 522         /**
 523          * Set the follow policy for the page, but leave the index policy un-
 524          * touched.
 525          *
 526          * @param $policy string Either 'follow' or 'nofollow'.
 527          * @return null
 528          */
 529         public function setFollowPolicy( $policy ) {
 530                 $policy = trim( $policy );
 531                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 532                         $this->mFollowPolicy = $policy;
 533                 }
 534         }
 535
 536         /**
 537          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 538          */
 539         public function setHTMLTitle( $name ) {
 540                 $this->mHTMLtitle = $name;
 541         }
 542
 543         /**
 544          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 545          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 546          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 547          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 548          */
 549         public function setPageTitle( $name ) {
 550                 global $wgContLang;
 551                 $name = $wgContLang->convert( $name, true );
 552                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 553                 # but leave "<i>foobar</i>" alone
 554                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 555                 $this->mPagetitle = $nameWithTags;
 556
 557                 $taction =  $this->getPageTitleActionText();
 558                 if( !empty( $taction ) ) {
 559                         $name .= ' - '.$taction;
 560                 }
 561
 562                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 563                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 564         }
 565
 566         public function setTitle( $t ) {
 567                 $this->mTitle = $t;
 568         }
 569
 570         public function getTitle() {
 571                 if ( $this->mTitle instanceof Title ) {
 572                         return $this->mTitle;
 573                 }
 574                 else {
 575                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 576                         global $wgTitle;
 577                         return $wgTitle;
 578                 }
 579         }
 580
 581         public function getHTMLTitle() { return $this->mHTMLtitle; }
 582         public function getPageTitle() { return $this->mPagetitle; }
 583         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 584         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 585         public function getSubtitle() { return $this->mSubtitle; }
 586         public function isArticle() { return $this->mIsarticle; }
 587         public function setPrintable() { $this->mPrintable = true; }
 588         public function isPrintable() { return $this->mPrintable; }
 589         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 590         public function isSyndicated() { return $this->mShowFeedLinks; }
 591         public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
 592         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 593         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 594         public function getOnloadHandler() { return $this->mOnloadHandler; }
 595         public function disable() { $this->mDoNothing = true; }
 596         public function isDisabled() { return $this->mDoNothing; }
 597
 598         public function setArticleRelated( $v ) {
 599                 $this->mIsArticleRelated = $v;
 600                 if ( !$v ) {
 601                         $this->mIsarticle = false;
 602                 }
 603         }
 604         public function setArticleFlag( $v ) {
 605                 $this->mIsarticle = $v;
 606                 if ( $v ) {
 607                         $this->mIsArticleRelated = $v;
 608                 }
 609         }
 610
 611         public function isArticleRelated() { return $this->mIsArticleRelated; }
 612
 613         public function getLanguageLinks() { return $this->mLanguageLinks; }
 614         public function addLanguageLinks($newLinkArray) {
 615                 $this->mLanguageLinks += $newLinkArray;
 616         }
 617         public function setLanguageLinks($newLinkArray) {
 618                 $this->mLanguageLinks = $newLinkArray;
 619         }
 620
 621         public function getCategoryLinks() {
 622                 return $this->mCategoryLinks;
 623         }
 624
 625         /**
 626          * Add an array of categories, with names in the keys
 627          */
 628         public function addCategoryLinks( $categories ) {
 629                 global $wgUser, $wgContLang;
 630
 631                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 632                         return;
 633                 }
 634
 635                 # Add the links to a LinkBatch
 636                 $arr = array( NS_CATEGORY => $categories );
 637                 $lb = new LinkBatch;
 638                 $lb->setArray( $arr );
 639
 640                 # Fetch existence plus the hiddencat property
 641                 $dbr = wfGetDB( DB_SLAVE );
 642                 $pageTable = $dbr->tableName( 'page' );
 643                 $where = $lb->constructSet( 'page', $dbr );
 644                 $propsTable = $dbr->tableName( 'page_props' );
 645                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 646                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 647                 $res = $dbr->query( $sql, __METHOD__ );
 648
 649                 # Add the results to the link cache
 650                 $lb->addResultToCache( LinkCache::singleton(), $res );
 651
 652                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 653                 $categories = array_combine( array_keys( $categories ),
 654                         array_fill( 0, count( $categories ), 'normal' ) );
 655
 656                 # Mark hidden categories
 657                 foreach ( $res as $row ) {
 658                         if ( isset( $row->pp_value ) ) {
 659                                 $categories[$row->page_title] = 'hidden';
 660                         }
 661                 }
 662
 663                 # Add the remaining categories to the skin
 664                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 665                         $sk = $wgUser->getSkin();
 666                         foreach ( $categories as $category => $type ) {
 667                                 $origcategory = $category;
 668                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 669                                 $wgContLang->findVariantLink( $category, $title, true );
 670                                 if ( $category != $origcategory )
 671                                         if ( array_key_exists( $category, $categories ) )
 672                                                 continue;
 673                                 $text = $wgContLang->convertHtml( $title->getText() );
 674                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 675                         }
 676                 }
 677         }
 678
 679         public function setCategoryLinks($categories) {
 680                 $this->mCategoryLinks = array();
 681                 $this->addCategoryLinks($categories);
 682         }
 683
 684         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 685         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 686
 687         public function disallowUserJs() { $this->mAllowUserJs = false; }
 688         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 689
 690         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 691         public function addHTML( $text ) { $this->mBodytext .= $text; }
 692         public function clearHTML() { $this->mBodytext = ''; }
 693         public function getHTML() { return $this->mBodytext; }
 694         public function debug( $text ) { $this->mDebugtext .= $text; }
 695
 696         /* @deprecated */
 697         public function setParserOptions( $options ) {
 698                 wfDeprecated( __METHOD__ );
 699                 return $this->parserOptions( $options );
 700         }
 701
 702         public function parserOptions( $options = null ) {
 703                 if ( !$this->mParserOptions ) {
 704                         $this->mParserOptions = new ParserOptions;
 705                 }
 706                 return wfSetVar( $this->mParserOptions, $options );
 707         }
 708
 709         /**
 710          * Set the revision ID which will be seen by the wiki text parser
 711          * for things such as embedded {{REVISIONID}} variable use.
 712          * @param mixed $revid an integer, or NULL
 713          * @return mixed previous value
 714          */
 715         public function setRevisionId( $revid ) {
 716                 $val = is_null( $revid ) ? null : intval( $revid );
 717                 return wfSetVar( $this->mRevisionId, $val );
 718         }
 719
 720         public function getRevisionId() {
 721                 return $this->mRevisionId;
 722         }
 723
 724         /**
 725          * Convert wikitext to HTML and add it to the buffer
 726          * Default assumes that the current page title will
 727          * be used.
 728          *
 729          * @param string $text
 730          * @param bool   $linestart
 731          */
 732         public function addWikiText( $text, $linestart = true ) {
 733                 $title = $this->getTitle(); // Work arround E_STRICT
 734                 $this->addWikiTextTitle( $text, $title, $linestart );
 735         }
 736
 737         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 738                 $this->addWikiTextTitle($text, $title, $linestart);
 739         }
 740
 741         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 742                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 743         }
 744
 745         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 746                 global $wgParser;
 747
 748                 wfProfileIn( __METHOD__ );
 749
 750                 wfIncrStats( 'pcache_not_possible' );
 751
 752                 $popts = $this->parserOptions();
 753                 $oldTidy = $popts->setTidy( $tidy );
 754
 755                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 756                         $linestart, true, $this->mRevisionId );
 757
 758                 $popts->setTidy( $oldTidy );
 759
 760                 $this->addParserOutput( $parserOutput );
 761
 762                 wfProfileOut( __METHOD__ );
 763         }
 764
 765         /**
 766          * @todo document
 767          * @param ParserOutput object &$parserOutput
 768          */
 769         public function addParserOutputNoText( &$parserOutput ) {
 770                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 771
 772                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 773                 $this->addCategoryLinks( $parserOutput->getCategories() );
 774                 $this->mNewSectionLink = $parserOutput->getNewSection();
 775                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 776
 777                 $this->mParseWarnings = $parserOutput->getWarnings();
 778                 if ( $parserOutput->getCacheTime() == -1 ) {
 779                         $this->enableClientCache( false );
 780                 }
 781                 $this->mNoGallery = $parserOutput->getNoGallery();
 782                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 783                 // Versioning...
 784                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 785                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 786                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 787                         } else {
 788                                 $this->mTemplateIds[$ns] = $dbks;
 789                         }
 790                 }
 791                 // Page title
 792                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 793                         $this->setPageTitle( $dt );
 794                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 795                         $this->setPageTitle( $title );
 796
 797                 // Hooks registered in the object
 798                 global $wgParserOutputHooks;
 799                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 800                         list( $hookName, $data ) = $hookInfo;
 801                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 802                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 803                         }
 804                 }
 805
 806                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 807         }
 808
 809         /**
 810          * @todo document
 811          * @param ParserOutput &$parserOutput
 812          */
 813         function addParserOutput( &$parserOutput ) {
 814                 $this->addParserOutputNoText( $parserOutput );
 815                 $text = $parserOutput->getText();
 816                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 817                 $this->addHTML( $text );
 818         }
 819
 820         /**
 821          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 822          * Saves the text into the parser cache if possible.
 823          *
 824          * @param string  $text
 825          * @param Article $article
 826          * @param bool    $cache
 827          * @deprecated Use Article::outputWikitext
 828          */
 829         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 830                 global $wgParser;
 831
 832                 wfDeprecated( __METHOD__ );
 833
 834                 $popts = $this->parserOptions();
 835                 $popts->setTidy(true);
 836                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 837                         $popts, true, true, $this->mRevisionId );
 838                 $popts->setTidy(false);
 839                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 840                         $parserCache = ParserCache::singleton();
 841                         $parserCache->save( $parserOutput, $article, $popts);
 842                 }
 843
 844                 $this->addParserOutput( $parserOutput );
 845         }
 846
 847         /**
 848          * @deprecated use addWikiTextTidy()
 849          */
 850         public function addSecondaryWikiText( $text, $linestart = true ) {
 851                 wfDeprecated( __METHOD__ );
 852                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 853         }
 854
 855         /**
 856          * Add wikitext with tidy enabled
 857          */
 858         public function addWikiTextTidy(  $text, $linestart = true ) {
 859                 $title = $this->getTitle();
 860                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 861         }
 862
 863
 864         /**
 865          * Add the output of a QuickTemplate to the output buffer
 866          *
 867          * @param QuickTemplate $template
 868          */
 869         public function addTemplate( &$template ) {
 870                 ob_start();
 871                 $template->execute();
 872                 $this->addHTML( ob_get_contents() );
 873                 ob_end_clean();
 874         }
 875
 876         /**
 877          * Parse wikitext and return the HTML.
 878          *
 879          * @param string $text
 880          * @param bool   $linestart Is this the start of a line?
 881          * @param bool   $interface ??
 882          */
 883         public function parse( $text, $linestart = true, $interface = false ) {
 884                 global $wgParser;
 885                 if( is_null( $this->getTitle() ) ) {
 886                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 887                 }
 888                 $popts = $this->parserOptions();
 889                 if ( $interface) { $popts->setInterfaceMessage(true); }
 890                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 891                         $linestart, true, $this->mRevisionId );
 892                 if ( $interface) { $popts->setInterfaceMessage(false); }
 893                 return $parserOutput->getText();
 894         }
 895
 896         /** Parse wikitext, strip paragraphs, and return the HTML. */
 897         public function parseInline( $text, $linestart = true, $interface = false ) {
 898                 $parsed = $this->parse( $text, $linestart, $interface );
 899
 900                 $m = array();
 901                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 902                         $parsed = $m[1];
 903                 }
 904
 905                 return $parsed;
 906         }
 907
 908         /**
 909          * @param Article $article
 910          * @param User    $user
 911          *
 912          * @deprecated
 913          *
 914          * @return bool True if successful, else false.
 915          */
 916         public function tryParserCache( &$article ) {
 917                 wfDeprecated( __METHOD__ );
 918                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 919
 920                 if ($parserOutput !== false) {
 921                         $this->addParserOutput( $parserOutput );
 922                         return true;
 923                 } else {
 924                         return false;
 925                 }
 926         }
 927
 928         /**
 929          * @param int $maxage Maximum cache time on the Squid, in seconds.
 930          */
 931         public function setSquidMaxage( $maxage ) {
 932                 $this->mSquidMaxage = $maxage;
 933         }
 934
 935         /**
 936          * Use enableClientCache(false) to force it to send nocache headers
 937          * @param $state ??
 938          */
 939         public function enableClientCache( $state ) {
 940                 return wfSetVar( $this->mEnableClientCache, $state );
 941         }
 942
 943         function getCacheVaryCookies() {
 944                 global $wgCookiePrefix, $wgCacheVaryCookies;
 945                 static $cookies;
 946                 if ( $cookies === null ) {
 947                         $cookies = array_merge(
 948                                 array(
 949                                         "{$wgCookiePrefix}Token",
 950                                         "{$wgCookiePrefix}LoggedOut",
 951                                         session_name()
 952                                 ),
 953                                 $wgCacheVaryCookies
 954                         );
 955                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 956                 }
 957                 return $cookies;
 958         }
 959
 960         function uncacheableBecauseRequestVars() {
 961                 global $wgRequest;
 962                 return  $wgRequest->getText('useskin', false) === false
 963                         && $wgRequest->getText('uselang', false) === false;
 964         }
 965
 966         /**
 967          * Check if the request has a cache-varying cookie header
 968          * If it does, it's very important that we don't allow public caching
 969          */
 970         function haveCacheVaryCookies() {
 971                 global $wgRequest;
 972                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 973                 if ( $cookieHeader === false ) {
 974                         return false;
 975                 }
 976                 $cvCookies = $this->getCacheVaryCookies();
 977                 foreach ( $cvCookies as $cookieName ) {
 978                         # Check for a simple string match, like the way squid does it
 979                         if ( strpos( $cookieHeader, $cookieName ) ) {
 980                                 wfDebug( __METHOD__.": found $cookieName\n" );
 981                                 return true;
 982                         }
 983                 }
 984                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 985                 return false;
 986         }
 987
 988         /** Get a complete X-Vary-Options header */
 989         public function getXVO() {
 990                 $cvCookies = $this->getCacheVaryCookies();
 991                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
 992                 $first = true;
 993                 foreach ( $cvCookies as $cookieName ) {
 994                         if ( $first ) {
 995                                 $first = false;
 996                         } else {
 997                                 $xvo .= ';';
 998                         }
 999                         $xvo .= 'string-contains=' . $cookieName;
1000                 }
1001                 return $xvo;
1002         }
1003
1004         public function sendCacheControl() {
1005                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
1006
1007                 $response = $wgRequest->response();
1008                 if ($wgUseETag && $this->mETag)
1009                         $response->header("ETag: $this->mETag");
1010
1011                 # don't serve compressed data to clients who can't handle it
1012                 # maintain different caches for logged-in users and non-logged in ones
1013                 $response->header( 'Vary: Accept-Encoding, Cookie' );
1014
1015                 if ( $wgUseXVO ) {
1016                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1017                         $response->header( $this->getXVO() );
1018                 }
1019
1020                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1021                         if( $wgUseSquid && session_id() == '' &&
1022                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1023                         {
1024                                 if ( $wgUseESI ) {
1025                                         # We'll purge the proxy cache explicitly, but require end user agents
1026                                         # to revalidate against the proxy on each visit.
1027                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1028                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1029                                         # start with a shorter timeout for initial testing
1030                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1031                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1032                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1033                                 } else {
1034                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1035                                         # to revalidate against the proxy on each visit.
1036                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1037                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1038                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1039                                         # start with a shorter timeout for initial testing
1040                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1041                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1042                                 }
1043                         } else {
1044                                 # We do want clients to cache if they can, but they *must* check for updates
1045                                 # on revisiting the page.
1046                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1047                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1048                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1049                         }
1050                         if($this->mLastModified) {
1051                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1052                         }
1053                 } else {
1054                         wfDebug( __METHOD__ . ": no caching **\n", false );
1055
1056                         # In general, the absence of a last modified header should be enough to prevent
1057                         # the client from using its cache. We send a few other things just to make sure.
1058                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1059                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1060                         $response->header( 'Pragma: no-cache' );
1061                 }
1062         }
1063
1064         /**
1065          * Finally, all the text has been munged and accumulated into
1066          * the object, let's actually output it:
1067          */
1068         public function output() {
1069                 global $wgUser, $wgOutputEncoding, $wgRequest;
1070                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1071                 global $wgUseAjax, $wgAjaxWatch;
1072                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1073                 global $wgArticle;
1074
1075                 if( $this->mDoNothing ){
1076                         return;
1077                 }
1078                 wfProfileIn( __METHOD__ );
1079                 if ( '' != $this->mRedirect ) {
1080                         # Standards require redirect URLs to be absolute
1081                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1082                         if( $this->mRedirectCode == '301') {
1083                                 if( !$wgDebugRedirects ) {
1084                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1085                                 }
1086                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1087                         }
1088                         $this->sendCacheControl();
1089
1090                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1091                         if( $wgDebugRedirects ) {
1092                                 $url = htmlspecialchars( $this->mRedirect );
1093                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1094                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1095                                 print "</body>\n</html>\n";
1096                         } else {
1097                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1098                         }
1099                         wfProfileOut( __METHOD__ );
1100                         return;
1101                 }
1102                 elseif ( $this->mStatusCode )
1103                 {
1104                         $statusMessage = array(
1105                                 100 => 'Continue',
1106                                 101 => 'Switching Protocols',
1107                                 102 => 'Processing',
1108                                 200 => 'OK',
1109                                 201 => 'Created',
1110                                 202 => 'Accepted',
1111                                 203 => 'Non-Authoritative Information',
1112                                 204 => 'No Content',
1113                                 205 => 'Reset Content',
1114                                 206 => 'Partial Content',
1115                                 207 => 'Multi-Status',
1116                                 300 => 'Multiple Choices',
1117                                 301 => 'Moved Permanently',
1118                                 302 => 'Found',
1119                                 303 => 'See Other',
1120                                 304 => 'Not Modified',
1121                                 305 => 'Use Proxy',
1122                                 307 => 'Temporary Redirect',
1123                                 400 => 'Bad Request',
1124                                 401 => 'Unauthorized',
1125                                 402 => 'Payment Required',
1126                                 403 => 'Forbidden',
1127                                 404 => 'Not Found',
1128                                 405 => 'Method Not Allowed',
1129                                 406 => 'Not Acceptable',
1130                                 407 => 'Proxy Authentication Required',
1131                                 408 => 'Request Timeout',
1132                                 409 => 'Conflict',
1133                                 410 => 'Gone',
1134                                 411 => 'Length Required',
1135                                 412 => 'Precondition Failed',
1136                                 413 => 'Request Entity Too Large',
1137                                 414 => 'Request-URI Too Large',
1138                                 415 => 'Unsupported Media Type',
1139                                 416 => 'Request Range Not Satisfiable',
1140                                 417 => 'Expectation Failed',
1141                                 422 => 'Unprocessable Entity',
1142                                 423 => 'Locked',
1143                                 424 => 'Failed Dependency',
1144                                 500 => 'Internal Server Error',
1145                                 501 => 'Not Implemented',
1146                                 502 => 'Bad Gateway',
1147                                 503 => 'Service Unavailable',
1148                                 504 => 'Gateway Timeout',
1149                                 505 => 'HTTP Version Not Supported',
1150                                 507 => 'Insufficient Storage'
1151                         );
1152
1153                         if ( $statusMessage[$this->mStatusCode] )
1154                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1155                 }
1156
1157                 $sk = $wgUser->getSkin();
1158
1159                 // Add our core scripts to output
1160                 $this->addCoreScripts2Top();
1161
1162                 if ( $wgUseAjax ) {
1163                         $this->addScriptFile( 'ajax.js' );
1164
1165                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1166
1167                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1168                                 $this->addScriptFile( 'ajaxwatch.js' );
1169                         }
1170
1171                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1172                                 $this->addScriptFile( 'mwsuggest.js' );
1173                         }
1174                 }
1175
1176                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1177                         $this->addScriptFile( 'rightclickedit.js' );
1178                 }
1179
1180                 global $wgUseAJAXCategories, $wgEnableJS2system;
1181                 if ($wgUseAJAXCategories && $wgEnableJS2system) {
1182                         global $wgAJAXCategoriesNamespaces;
1183
1184                         $title = $this->getTitle();
1185
1186                         if( empty( $wgAJAXCategoriesNamespaces ) || in_array( $title->getNamespace(), $wgAJAXCategoriesNamespaces ) ) {
1187                                 $this->addScriptClass( 'ajaxCategories' );
1188                         }
1189                 }
1190
1191                 if( $wgUniversalEditButton ) {
1192                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1193                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1194                                 // Original UniversalEditButton
1195                                 $msg = wfMsg('edit');
1196                                 $this->addLink( array(
1197                                         'rel' => 'alternate',
1198                                         'type' => 'application/x-wiki',
1199                                         'title' => $msg,
1200                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1201                                 ) );
1202                                 // Alternate edit link
1203                                 $this->addLink( array(
1204                                         'rel' => 'edit',
1205                                         'title' => $msg,
1206                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1207                                 ) );
1208                         }
1209                 }
1210
1211                 # Buffer output; final headers may depend on later processing
1212                 ob_start();
1213
1214                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1215                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1216
1217                 if ($this->mArticleBodyOnly) {
1218                         $this->out($this->mBodytext);
1219                 } else {
1220                         // Hook that allows last minute changes to the output page, e.g.
1221                         // adding of CSS or Javascript by extensions.
1222                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1223
1224                         wfProfileIn( 'Output-skin' );
1225                         $sk->outputPage( $this );
1226                         wfProfileOut( 'Output-skin' );
1227                 }
1228
1229                 $this->sendCacheControl();
1230                 ob_end_flush();
1231                 wfProfileOut( __METHOD__ );
1232         }
1233
1234         /**
1235          * Actually output something with print(). Performs an iconv to the
1236          * output encoding, if needed.
1237          * @param string $ins The string to output
1238          */
1239         public function out( $ins ) {
1240                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1241                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1242                         $outs = $ins;
1243                 } else {
1244                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1245                         if ( false === $outs ) { $outs = $ins; }
1246                 }
1247                 print $outs;
1248         }
1249
1250         /**
1251          * @todo document
1252          */
1253         public static function setEncodings() {
1254                 global $wgInputEncoding, $wgOutputEncoding;
1255                 global $wgContLang;
1256
1257                 $wgInputEncoding = strtolower( $wgInputEncoding );
1258
1259                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1260                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1261                         return;
1262                 }
1263                 $wgOutputEncoding = $wgInputEncoding;
1264         }
1265
1266         /**
1267          * Deprecated, use wfReportTime() instead.
1268          * @return string
1269          * @deprecated
1270          */
1271         public function reportTime() {
1272                 wfDeprecated( __METHOD__ );
1273                 $time = wfReportTime();
1274                 return $time;
1275         }
1276
1277         /**
1278          * Produce a "user is blocked" page.
1279          *
1280          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1281          * @return nothing
1282          */
1283         function blockedPage( $return = true ) {
1284                 global $wgUser, $wgContLang, $wgLang;
1285
1286                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1287                 $this->setRobotPolicy( 'noindex,nofollow' );
1288                 $this->setArticleRelated( false );
1289
1290                 $name = User::whoIs( $wgUser->blockedBy() );
1291                 $reason = $wgUser->blockedFor();
1292                 if( $reason == '' ) {
1293                         $reason = wfMsg( 'blockednoreason' );
1294                 }
1295                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1296                 $ip = wfGetIP();
1297
1298                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1299
1300                 $blockid = $wgUser->mBlock->mId;
1301
1302                 $blockExpiry = $wgUser->mBlock->mExpiry;
1303                 if ( $blockExpiry == 'infinity' ) {
1304                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1305                         // Search for localization in 'ipboptions'
1306                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1307                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1308                                 if ( strpos( $option, ":" ) === false )
1309                                         continue;
1310                                 list( $show, $value ) = explode( ":", $option );
1311                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1312                                         $blockExpiry = $show;
1313                                         break;
1314                                 }
1315                         }
1316                 } else {
1317                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1318                 }
1319
1320                 if ( $wgUser->mBlock->mAuto ) {
1321                         $msg = 'autoblockedtext';
1322                 } else {
1323                         $msg = 'blockedtext';
1324                 }
1325
1326                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1327                  * This could be a username, an ip range, or a single ip. */
1328                 $intended = $wgUser->mBlock->mAddress;
1329
1330                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1331
1332                 # Don't auto-return to special pages
1333                 if( $return ) {
1334                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1335                         $this->returnToMain( null, $return );
1336                 }
1337         }
1338
1339         /**
1340          * Output a standard error page
1341          *
1342          * @param string $title Message key for page title
1343          * @param string $msg Message key for page text
1344          * @param array $params Message parameters
1345          */
1346         public function showErrorPage( $title, $msg, $params = array() ) {
1347                 if ( $this->getTitle() ) {
1348                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1349                 }
1350                 $this->setPageTitle( wfMsg( $title ) );
1351                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1352                 $this->setRobotPolicy( 'noindex,nofollow' );
1353                 $this->setArticleRelated( false );
1354                 $this->enableClientCache( false );
1355                 $this->mRedirect = '';
1356                 $this->mBodytext = '';
1357
1358                 array_unshift( $params, 'parse' );
1359                 array_unshift( $params, $msg );
1360                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1361
1362                 $this->returnToMain();
1363         }
1364
1365         /**
1366          * Output a standard permission error page
1367          *
1368          * @param array $errors Error message keys
1369          */
1370         public function showPermissionsErrorPage( $errors, $action = null )
1371         {
1372                 $this->mDebugtext .= 'Original title: ' .
1373                 $this->getTitle()->getPrefixedText() . "\n";
1374                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1375                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1376                 $this->setRobotPolicy( 'noindex,nofollow' );
1377                 $this->setArticleRelated( false );
1378                 $this->enableClientCache( false );
1379                 $this->mRedirect = '';
1380                 $this->mBodytext = '';
1381                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1382         }
1383
1384         /** @deprecated */
1385         public function errorpage( $title, $msg ) {
1386                 wfDeprecated( __METHOD__ );
1387                 throw new ErrorPageError( $title, $msg );
1388         }
1389
1390         /**
1391          * Display an error page indicating that a given version of MediaWiki is
1392          * required to use it
1393          *
1394          * @param mixed $version The version of MediaWiki needed to use the page
1395          */
1396         public function versionRequired( $version ) {
1397                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1398                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1399                 $this->setRobotPolicy( 'noindex,nofollow' );
1400                 $this->setArticleRelated( false );
1401                 $this->mBodytext = '';
1402
1403                 $this->addWikiMsg( 'versionrequiredtext', $version );
1404                 $this->returnToMain();
1405         }
1406
1407         /**
1408          * Display an error page noting that a given permission bit is required.
1409          *
1410          * @param string $permission key required
1411          */
1412         public function permissionRequired( $permission ) {
1413                 global $wgLang;
1414
1415                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1416                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1417                 $this->setRobotPolicy( 'noindex,nofollow' );
1418                 $this->setArticleRelated( false );
1419                 $this->mBodytext = '';
1420
1421                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1422                         User::getGroupsWithPermission( $permission ) );
1423                 if( $groups ) {
1424                         $this->addWikiMsg( 'badaccess-groups',
1425                                 $wgLang->commaList( $groups ),
1426                                 count( $groups) );
1427                 } else {
1428                         $this->addWikiMsg( 'badaccess-group0' );
1429                 }
1430                 $this->returnToMain();
1431         }
1432
1433         /**
1434          * Use permissionRequired.
1435          * @deprecated
1436          */
1437         public function sysopRequired() {
1438                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1439         }
1440
1441         /**
1442          * Use permissionRequired.
1443          * @deprecated
1444          */
1445         public function developerRequired() {
1446                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1447         }
1448
1449         /**
1450          * Produce the stock "please login to use the wiki" page
1451          */
1452         public function loginToUse() {
1453                 global $wgUser, $wgContLang;
1454
1455                 if( $wgUser->isLoggedIn() ) {
1456                         $this->permissionRequired( 'read' );
1457                         return;
1458                 }
1459
1460                 $skin = $wgUser->getSkin();
1461
1462                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1463                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1464                 $this->setRobotPolicy( 'noindex,nofollow' );
1465                 $this->setArticleFlag( false );
1466
1467                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1468                 $loginLink = $skin->link(
1469                         $loginTitle,
1470                         wfMsgHtml( 'loginreqlink' ),
1471                         array(),
1472                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1473                         array( 'known', 'noclasses' )
1474                 );
1475                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1476                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1477
1478                 # Don't return to the main page if the user can't read it
1479                 # otherwise we'll end up in a pointless loop
1480                 $mainPage = Title::newMainPage();
1481                 if( $mainPage->userCanRead() )
1482                         $this->returnToMain( null, $mainPage );
1483         }
1484
1485         /** @deprecated */
1486         public function databaseError( $fname, $sql, $error, $errno ) {
1487                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1488         }
1489
1490         /**
1491          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1492          * @return string The wikitext error-messages, formatted into a list.
1493          */
1494         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1495                 if ($action == null) {
1496                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1497                 } else {
1498                         global $wgLang;
1499                         $action_desc = wfMsgNoTrans( "action-$action" );
1500                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1501                 }
1502
1503                 if (count( $errors ) > 1) {
1504                         $text .= '<ul class="permissions-errors">' . "\n";
1505
1506                         foreach( $errors as $error )
1507                         {
1508                                 $text .= '<li>';
1509                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1510                                 $text .= "</li>\n";
1511                         }
1512                         $text .= '</ul>';
1513                 } else {
1514                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1515                 }
1516
1517                 return $text;
1518         }
1519
1520         /**
1521          * Display a page stating that the Wiki is in read-only mode,
1522          * and optionally show the source of the page that the user
1523          * was trying to edit.  Should only be called (for this
1524          * purpose) after wfReadOnly() has returned true.
1525          *
1526          * For historical reasons, this function is _also_ used to
1527          * show the error message when a user tries to edit a page
1528          * they are not allowed to edit.  (Unless it's because they're
1529          * blocked, then we show blockedPage() instead.)  In this
1530          * case, the second parameter should be set to true and a list
1531          * of reasons supplied as the third parameter.
1532          *
1533          * @todo Needs to be split into multiple functions.
1534          *
1535          * @param string $source    Source code to show (or null).
1536          * @param bool   $protected Is this a permissions error?
1537          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1538          */
1539         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1540                 global $wgUser;
1541                 $skin = $wgUser->getSkin();
1542
1543                 $this->setRobotPolicy( 'noindex,nofollow' );
1544                 $this->setArticleRelated( false );
1545
1546                 // If no reason is given, just supply a default "I can't let you do
1547                 // that, Dave" message.  Should only occur if called by legacy code.
1548                 if ( $protected && empty($reasons) ) {
1549                         $reasons[] = array( 'badaccess-group0' );
1550                 }
1551
1552                 if ( !empty($reasons) ) {
1553                         // Permissions error
1554                         if( $source ) {
1555                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1556                                 $this->setSubtitle(
1557                                         wfMsg(
1558                                                 'viewsourcefor',
1559                                                 $skin->link(
1560                                                         $this->getTitle(),
1561                                                         null,
1562                                                         array(),
1563                                                         array(),
1564                                                         array( 'known', 'noclasses' )
1565                                                 )
1566                                         )
1567                                 );
1568                         } else {
1569                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1570                         }
1571                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1572                 } else {
1573                         // Wiki is read only
1574                         $this->setPageTitle( wfMsg( 'readonly' ) );
1575                         $reason = wfReadOnlyReason();
1576                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1577                 }
1578
1579                 // Show source, if supplied
1580                 if( is_string( $source ) ) {
1581                         $this->addWikiMsg( 'viewsourcetext' );
1582
1583                         $params = array(
1584                                 'id'   => 'wpTextbox1',
1585                                 'name' => 'wpTextbox1',
1586                                 'cols' => $wgUser->getOption( 'cols' ),
1587                                 'rows' => $wgUser->getOption( 'rows' ),
1588                                 'readonly' => 'readonly'
1589                         );
1590                         $this->addHTML( Html::element( 'textarea', $params, $source ) );
1591
1592                         // Show templates used by this article
1593                         $skin = $wgUser->getSkin();
1594                         $article = new Article( $this->getTitle() );
1595                         $this->addHTML( "<div class='templatesUsed'>
1596 {$skin->formatTemplates( $article->getUsedTemplates() )}
1597 </div>
1598 " );
1599                 }
1600
1601                 # If the title doesn't exist, it's fairly pointless to print a return
1602                 # link to it.  After all, you just tried editing it and couldn't, so
1603                 # what's there to do there?
1604                 if( $this->getTitle()->exists() ) {
1605                         $this->returnToMain( null, $this->getTitle() );
1606                 }
1607         }
1608
1609         /** @deprecated */
1610         public function fatalError( $message ) {
1611                 wfDeprecated( __METHOD__ );
1612                 throw new FatalError( $message );
1613         }
1614
1615         /** @deprecated */
1616         public function unexpectedValueError( $name, $val ) {
1617                 wfDeprecated( __METHOD__ );
1618                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1619         }
1620
1621         /** @deprecated */
1622         public function fileCopyError( $old, $new ) {
1623                 wfDeprecated( __METHOD__ );
1624                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1625         }
1626
1627         /** @deprecated */
1628         public function fileRenameError( $old, $new ) {
1629                 wfDeprecated( __METHOD__ );
1630                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1631         }
1632
1633         /** @deprecated */
1634         public function fileDeleteError( $name ) {
1635                 wfDeprecated( __METHOD__ );
1636                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1637         }
1638
1639         /** @deprecated */
1640         public function fileNotFoundError( $name ) {
1641                 wfDeprecated( __METHOD__ );
1642                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1643         }
1644
1645         public function showFatalError( $message ) {
1646                 $this->setPageTitle( wfMsg( "internalerror" ) );
1647                 $this->setRobotPolicy( "noindex,nofollow" );
1648                 $this->setArticleRelated( false );
1649                 $this->enableClientCache( false );
1650                 $this->mRedirect = '';
1651                 $this->mBodytext = $message;
1652         }
1653
1654         public function showUnexpectedValueError( $name, $val ) {
1655                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1656         }
1657
1658         public function showFileCopyError( $old, $new ) {
1659                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1660         }
1661
1662         public function showFileRenameError( $old, $new ) {
1663                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1664         }
1665
1666         public function showFileDeleteError( $name ) {
1667                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1668         }
1669
1670         public function showFileNotFoundError( $name ) {
1671                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1672         }
1673
1674         /**
1675          * Add a "return to" link pointing to a specified title
1676          *
1677          * @param Title $title Title to link
1678          * @param string $query Query string
1679          */
1680         public function addReturnTo( $title, $query = array() ) {
1681                 global $wgUser;
1682                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1683                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1684                         $title, null, array(), $query ) );
1685                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1686         }
1687
1688         /**
1689          * Add a "return to" link pointing to a specified title,
1690          * or the title indicated in the request, or else the main page
1691          *
1692          * @param null $unused No longer used
1693          * @param Title $returnto Title to return to
1694          */
1695         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1696                 global $wgRequest;
1697
1698                 if ( $returnto == null ) {
1699                         $returnto = $wgRequest->getText( 'returnto' );
1700                 }
1701
1702                 if ( $returntoquery == null ) {
1703                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1704                 }
1705
1706                 if ( '' === $returnto ) {
1707                         $returnto = Title::newMainPage();
1708                 }
1709
1710                 if ( is_object( $returnto ) ) {
1711                         $titleObj = $returnto;
1712                 } else {
1713                         $titleObj = Title::newFromText( $returnto );
1714                 }
1715                 if ( !is_object( $titleObj ) ) {
1716                         $titleObj = Title::newMainPage();
1717                 }
1718
1719                 $this->addReturnTo( $titleObj, $returntoquery );
1720         }
1721
1722         /**
1723          * @return string The doctype, opening <html>, and head element.
1724          *
1725          * @param $sk Skin The given Skin
1726          */
1727         public function headElement( Skin $sk, $includeStyle = true ) {
1728                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1729                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1730                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1731
1732                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1733                 if ( $sk->commonPrintStylesheet() ) {
1734                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1735                 }
1736                 $sk->setupUserCss( $this );
1737
1738                 $ret = '';
1739
1740                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1741                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1742                 }
1743
1744                 if ( '' == $this->getHTMLTitle() ) {
1745                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1746                 }
1747
1748                 $dir = $wgContLang->getDir();
1749
1750                 if ( $wgHtml5 ) {
1751                         $ret .= "<!doctype html>\n";
1752                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1753                 } else {
1754                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1755                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1756                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1757                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1758                         }
1759                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1760                 }
1761
1762                 $ret .= "<head>\n";
1763                 $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1764                 $ret .= implode( "\n", array(
1765                         $this->getHeadLinks(),
1766                         $this->buildCssLinks(),
1767                         $this->getHeadScripts( $sk ),
1768                         $this->getHeadItems(),
1769                 ));
1770                 if( $sk->usercss ){
1771                         $ret .= Html::inlineStyle( $sk->usercss );
1772                 }
1773
1774                 if( $wgEnableScriptLoader )
1775                         $ret .= $this->getScriptLoaderJs();
1776
1777                 if ($wgUseTrackbacks && $this->isArticleRelated())
1778                         $ret .= $this->getTitle()->trackbackRDF();
1779
1780                 $ret .= "</head>\n";
1781                 return $ret;
1782         }
1783
1784         /*
1785          * gets the global variables and mScripts
1786          *
1787          * also adds userjs to the end if enabled:
1788         */
1789         function getHeadScripts( Skin $sk ) {
1790                 global $wgUser, $wgRequest, $wgJsMimeType;
1791
1792                 $vars = Skin::makeGlobalVariablesScript( $sk->getSkinName() );
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 }