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         // the most recent id of any script that is grouped in the script request
  19         var $mLatestScriptRevID = 0;
  20
  21         var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
  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 .= "\t\t" . $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                 $linkarr = array( 'rel' => 'stylesheet', 'href' => $url, 'type' => 'text/css' );
 113                 array_push( $this->mExtStyles, $linkarr );
 114         }
 115
 116         /**
 117          * Add a JavaScript file out of skins/common, or a given relative path.
 118          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 119          */
 120         function addScriptFile( $file ) {
 121                 global $wgStylePath, $wgStyleVersion, $wgJsMimeType, $wgScript, $wgUser;
 122                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgEnableScriptLoader, $wgScriptPath;
 123
 124                 if( substr( $file, 0, 1 ) == '/' ) {
 125                         $path = $file;
 126                 } else {
 127                         $path = "{$wgStylePath}/common/{$file}";
 128                 }
 129
 130                 if( $wgEnableScriptLoader ){
 131                         if( strpos( $path, $wgScript ) !== false ){
 132                                 $reqPath = str_replace( $wgScript . '?', '', $path );
 133                                 $reqArgs = explode( '&', $reqPath );
 134                                 $reqSet = array();
 135
 136                                 foreach( $reqArgs as $arg ){
 137                                         list( $key, $var ) = explode( '=', $arg );
 138                                         $reqSet[$key] = $var;
 139                                 }
 140
 141                                 if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 142                                         // extract any extra param (for now just skin)
 143                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' ) ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 144                                         $this->mScriptLoaderClassList[] = 'WT:' . $reqSet['title'] . $ext_param ;
 145                                         // add the title revision to the key
 146                                         $t = Title::newFromText( $reqSet['title'] );
 147                                         // if there is no title (don't worry we just use the $wgStyleVersion var (which should be updated on relevant commits)
 148                                         if( $t && $t->exists() ){
 149                                                 if( $t->getLatestRevID() > $this->mLatestScriptRevID  )
 150                                                         $this->mLatestScriptRevID = $t->getLatestRevID();
 151                                         }
 152                                         return true;
 153                                 }
 154                         }
 155
 156                         // check for class from path:
 157                         $js_class = $this->getJsClassFromPath( $path );
 158                         if( $js_class ){
 159                                 // add to the class list:
 160                                 $this->mScriptLoaderClassList[] = $js_class;
 161                                 return true;
 162                         }
 163                 }
 164
 165                 // if the script loader did not find a way to add the script than add using addScript
 166                 $this->addScript(
 167                         Xml::element( 'script',
 168                                 array(
 169                                         'type' => $wgJsMimeType,
 170                                         'src' => wfAppendQuery( $path, $this->getURIDparam() ),
 171                                 ),
 172                                 '', false
 173                         )
 174                 );
 175         }
 176
 177         /**
 178          * This is the core script that is included on every page
 179          * (they are requested separately to improve caching across
 180          *  different page load types (edit, upload, view, etc)
 181          */
 182         function addCoreScripts2Top(){
 183                 global $wgEnableScriptLoader, $wgStyleVersion, $wgJSAutoloadLocalClasses, $wgJsMimeType, $wgScriptPath, $wgEnableJS2system;
 184                 //@@todo we should deprecate wikibits in favor of mv_embed and native jQuery functions
 185
 186                 if( $wgEnableJS2system ){
 187                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 188                 } else {
 189                         $core_classes = array( 'wikibits' );
 190                 }
 191
 192                 if( $wgEnableScriptLoader ){
 193                         $this->mScripts = $this->getScriptLoaderJs( $core_classes ) . $this->mScripts;
 194                 } else {
 195                         $so = '';
 196                         foreach( $core_classes as $s ){
 197                                 if( isset( $wgJSAutoloadLocalClasses[$s] ) ){
 198                                         $so.= Xml::element( 'script', array(
 199                                                         'type' => $wgJsMimeType,
 200                                                         'src' => "{$wgScriptPath}/{$wgJSAutoloadLocalClasses[$s]}?" . $this->getURIDparam()
 201                                                 ),
 202                                                 '', false
 203                                         );
 204                                 }
 205                         }
 206                         $this->mScripts =  $so . $this->mScripts;
 207                 }
 208         }
 209
 210         /**
 211          * @param $js_class String: name of JavaScript class
 212          * @return Boolean: false if class wasn't found, true on success
 213          */
 214         function addScriptClass( $js_class ){
 215                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 216                                 $wgJsMimeType, $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath;
 217
 218                 if( isset( $wgJSAutoloadClasses[$js_class] ) || isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
 219                         if( $wgEnableScriptLoader ){
 220                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ){
 221                                         $this->mScriptLoaderClassList[] = $js_class;
 222                                 }
 223                         } else {
 224                                 // do a normal load of without the script-loader:
 225                                 $path = $wgScriptPath . '/';
 226                                 if( isset( $wgJSAutoloadClasses[$js_class] ) ){
 227                                         $path.= $wgJSAutoloadClasses[$js_class];
 228                                 }else if( isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
 229                                         $path.= $wgJSAutoloadLocalClasses[$js_class];
 230                                 }
 231                                 $urlApend = ( $wgDebugJavaScript) ? time() : $wgStyleVersion;
 232                                 $this->addScript(
 233                                         Xml::element( 'script',
 234                                                 array(
 235                                                         'type' => $wgJsMimeType,
 236                                                         'src' => "$path?" . $urlApend,
 237                                                 ),
 238                                                 '', false
 239                                         )
 240                                 );
 241                         }
 242                         return true;
 243                 }
 244                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 245                 return false; // could not find the class
 246         }
 247
 248         /**
 249          * gets the scriptLoader javascript include
 250          * @param $forcClassAry Boolean: false by default
 251          */
 252         function getScriptLoaderJs( $forceClassAry = false ){
 253                 global $wgJsMimeType, $wgStyleVersion, $wgRequest, $wgDebugJavaScript;
 254
 255                 if( !$forceClassAry ){
 256                         $class_list = implode( ',', $this->mScriptLoaderClassList );
 257                 } else {
 258                         $class_list = implode( ',', $forceClassAry );
 259                 }
 260
 261                 $debug_param = ( $wgDebugJavaScript ||
 262                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 263                                                  $wgRequest->getVal( 'debug' ) == '1' )
 264                                          ? '&debug=true' : '';
 265
 266                 //@@todo intelligent unique id generation based on svn version of file (rather than just grabbing the $wgStyleVersion var)
 267                 //@@todo we should check the packaged message text in this javascript file for updates and update the $mScriptLoaderURID id (in getJsClassFromPath)
 268
 269                 //generate the unique request param (combine with the most recent revision id of any wiki page with the $wgStyleVersion var)
 270
 271
 272                 return Xml::element( 'script',
 273                                 array(
 274                                         'type' => $wgJsMimeType,
 275                                         'src' => wfScript( 'mwScriptLoader' ) . "?class={$class_list}{$debug_param}&".$this->getURIDparam(),
 276                                 ),
 277                                 '', false
 278                 );
 279         }
 280
 281         function getURIDparam(){
 282                 global $wgDebugJavaScript, $wgStyleVersion;
 283                 if( $wgDebugJavaScript ){
 284                         return 'urid=' . time();
 285                 } else {
 286                         return "urid={$wgStyleVersion}_{$this->mLatestScriptRevID}";
 287                 }
 288         }
 289
 290         function getJsClassFromPath( $path ){
 291                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 292
 293                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 294                 foreach( $scriptLoaderPaths as $js_class => $js_path ){
 295                         $js_path = "{$wgScriptPath}/{$js_path}";
 296                         if( $path == $js_path )
 297                                 return $js_class;
 298                 }
 299                 return false;
 300         }
 301
 302         /**
 303          * Add a self-contained script tag with the given contents
 304          * @param string $script JavaScript text, no <script> tags
 305          */
 306         function addInlineScript( $script ) {
 307                 global $wgJsMimeType;
 308                 $this->mScripts .= "\t\t<script type=\"$wgJsMimeType\">/*<![CDATA[*/\n\t\t$script\n\t\t/*]]>*/</script>\n";
 309         }
 310
 311         function getScript() {
 312                 global $wgEnableScriptLoader;
 313                 if( $wgEnableScriptLoader ){
 314                         //include $this->mScripts (for anything that we could not package into the scriptloader
 315                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 316                 } else {
 317                         return $this->mScripts . $this->getHeadItems();
 318                 }
 319         }
 320
 321         function getHeadItems() {
 322                 $s = '';
 323                 foreach ( $this->mHeadItems as $item ) {
 324                         $s .= $item;
 325                 }
 326                 return $s;
 327         }
 328
 329         function addHeadItem( $name, $value ) {
 330                 $this->mHeadItems[$name] = $value;
 331         }
 332
 333         function hasHeadItem( $name ) {
 334                 return isset( $this->mHeadItems[$name] );
 335         }
 336
 337         function setETag($tag) { $this->mETag = $tag; }
 338         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 339         function getArticleBodyOnly($only) { return $this->mArticleBodyOnly; }
 340
 341         function addLink( $linkarr ) {
 342                 # $linkarr should be an associative array of attributes. We'll escape on output.
 343                 array_push( $this->mLinktags, $linkarr );
 344         }
 345
 346         # Get all links added by extensions
 347         function getExtStyle() {
 348                 return $this->mExtStyles;
 349         }
 350
 351         function addMetadataLink( $linkarr ) {
 352                 # note: buggy CC software only reads first "meta" link
 353                 static $haveMeta = false;
 354                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 355                 $this->addLink( $linkarr );
 356                 $haveMeta = true;
 357         }
 358
 359         /**
 360          * checkLastModified tells the client to use the client-cached page if
 361          * possible. If sucessful, the OutputPage is disabled so that
 362          * any future call to OutputPage->output() have no effect.
 363          *
 364          * Side effect: sets mLastModified for Last-Modified header
 365          *
 366          * @return bool True iff cache-ok headers was sent.
 367          */
 368         function checkLastModified( $timestamp ) {
 369                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 370
 371                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 372                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 373                         return false;
 374                 }
 375                 if( !$wgCachePages ) {
 376                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 377                         return false;
 378                 }
 379                 if( $wgUser->getOption( 'nocache' ) ) {
 380                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 381                         return false;
 382                 }
 383
 384                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 385                 $modifiedTimes = array(
 386                         'page' => $timestamp,
 387                         'user' => $wgUser->getTouched(),
 388                         'epoch' => $wgCacheEpoch
 389                 );
 390                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 391
 392                 $maxModified = max( $modifiedTimes );
 393                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 394
 395                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 396                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 397                         return false;
 398                 }
 399
 400                 # Make debug info
 401                 $info = '';
 402                 foreach ( $modifiedTimes as $name => $value ) {
 403                         if ( $info !== '' ) {
 404                                 $info .= ', ';
 405                         }
 406                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 407                 }
 408
 409                 # IE sends sizes after the date like this:
 410                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 411                 # this breaks strtotime().
 412                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 413
 414                 wfSuppressWarnings(); // E_STRICT system time bitching
 415                 $clientHeaderTime = strtotime( $clientHeader );
 416                 wfRestoreWarnings();
 417                 if ( !$clientHeaderTime ) {
 418                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 419                         return false;
 420                 }
 421                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 422
 423                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 424                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 425                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 426                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 427                 if( $clientHeaderTime < $maxModified ) {
 428                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 429                         return false;
 430                 }
 431
 432                 # Not modified
 433                 # Give a 304 response code and disable body output
 434                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 435                 ini_set('zlib.output_compression', 0);
 436                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 437                 $this->sendCacheControl();
 438                 $this->disable();
 439
 440                 // Don't output a compressed blob when using ob_gzhandler;
 441                 // it's technically against HTTP spec and seems to confuse
 442                 // Firefox when the response gets split over two packets.
 443                 wfClearOutputBuffers();
 444
 445                 return true;
 446         }
 447
 448         function setPageTitleActionText( $text ) {
 449                 $this->mPageTitleActionText = $text;
 450         }
 451
 452         function getPageTitleActionText () {
 453                 if ( isset( $this->mPageTitleActionText ) ) {
 454                         return $this->mPageTitleActionText;
 455                 }
 456         }
 457
 458         /**
 459          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 460          *
 461          * @param $policy string The literal string to output as the contents of
 462          *   the meta tag.  Will be parsed according to the spec and output in
 463          *   standardized form.
 464          * @return null
 465          */
 466         public function setRobotPolicy( $policy ) {
 467                 $policy = explode( ',', $policy );
 468                 $policy = array_map( 'trim', $policy );
 469
 470                 # The default policy is follow, so if nothing is said explicitly, we
 471                 # do that.
 472                 if( in_array( 'nofollow', $policy ) ) {
 473                         $this->mFollowPolicy = 'nofollow';
 474                 } else {
 475                         $this->mFollowPolicy = 'follow';
 476                 }
 477
 478                 if( in_array( 'noindex', $policy ) ) {
 479                         $this->mIndexPolicy = 'noindex';
 480                 } else {
 481                         $this->mIndexPolicy = 'index';
 482                 }
 483         }
 484
 485         /**
 486          * Set the index policy for the page, but leave the follow policy un-
 487          * touched.
 488          *
 489          * @param $policy string Either 'index' or 'noindex'.
 490          * @return null
 491          */
 492         public function setIndexPolicy( $policy ) {
 493                 $policy = trim( $policy );
 494                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 495                         $this->mIndexPolicy = $policy;
 496                 }
 497         }
 498
 499         /**
 500          * Set the follow policy for the page, but leave the index policy un-
 501          * touched.
 502          *
 503          * @param $policy string Either 'follow' or 'nofollow'.
 504          * @return null
 505          */
 506         public function setFollowPolicy( $policy ) {
 507                 $policy = trim( $policy );
 508                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 509                         $this->mFollowPolicy = $policy;
 510                 }
 511         }
 512
 513         /**
 514          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 515          */
 516         public function setHTMLTitle( $name ) {
 517                 $this->mHTMLtitle = $name;
 518         }
 519
 520         /**
 521          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 522          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 523          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 524          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 525          */
 526         public function setPageTitle( $name ) {
 527                 global $wgContLang;
 528                 $name = $wgContLang->convert( $name, true );
 529                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 530                 # but leave "<i>foobar</i>" alone
 531                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 532                 $this->mPagetitle = $nameWithTags;
 533
 534                 $taction =  $this->getPageTitleActionText();
 535                 if( !empty( $taction ) ) {
 536                         $name .= ' - '.$taction;
 537                 }
 538
 539                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 540                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 541         }
 542
 543         public function setTitle( $t ) {
 544                 $this->mTitle = $t;
 545         }
 546
 547         public function getTitle() {
 548                 if ( $this->mTitle instanceof Title ) {
 549                         return $this->mTitle;
 550                 }
 551                 else {
 552                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 553                         global $wgTitle;
 554                         return $wgTitle;
 555                 }
 556         }
 557
 558         public function getHTMLTitle() { return $this->mHTMLtitle; }
 559         public function getPageTitle() { return $this->mPagetitle; }
 560         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 561         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 562         public function getSubtitle() { return $this->mSubtitle; }
 563         public function isArticle() { return $this->mIsarticle; }
 564         public function setPrintable() { $this->mPrintable = true; }
 565         public function isPrintable() { return $this->mPrintable; }
 566         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 567         public function isSyndicated() { return $this->mShowFeedLinks; }
 568         public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
 569         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 570         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 571         public function getOnloadHandler() { return $this->mOnloadHandler; }
 572         public function disable() { $this->mDoNothing = true; }
 573         public function isDisabled() { return $this->mDoNothing; }
 574
 575         public function setArticleRelated( $v ) {
 576                 $this->mIsArticleRelated = $v;
 577                 if ( !$v ) {
 578                         $this->mIsarticle = false;
 579                 }
 580         }
 581         public function setArticleFlag( $v ) {
 582                 $this->mIsarticle = $v;
 583                 if ( $v ) {
 584                         $this->mIsArticleRelated = $v;
 585                 }
 586         }
 587
 588         public function isArticleRelated() { return $this->mIsArticleRelated; }
 589
 590         public function getLanguageLinks() { return $this->mLanguageLinks; }
 591         public function addLanguageLinks($newLinkArray) {
 592                 $this->mLanguageLinks += $newLinkArray;
 593         }
 594         public function setLanguageLinks($newLinkArray) {
 595                 $this->mLanguageLinks = $newLinkArray;
 596         }
 597
 598         public function getCategoryLinks() {
 599                 return $this->mCategoryLinks;
 600         }
 601
 602         /**
 603          * Add an array of categories, with names in the keys
 604          */
 605         public function addCategoryLinks( $categories ) {
 606                 global $wgUser, $wgContLang;
 607
 608                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 609                         return;
 610                 }
 611
 612                 # Add the links to a LinkBatch
 613                 $arr = array( NS_CATEGORY => $categories );
 614                 $lb = new LinkBatch;
 615                 $lb->setArray( $arr );
 616
 617                 # Fetch existence plus the hiddencat property
 618                 $dbr = wfGetDB( DB_SLAVE );
 619                 $pageTable = $dbr->tableName( 'page' );
 620                 $where = $lb->constructSet( 'page', $dbr );
 621                 $propsTable = $dbr->tableName( 'page_props' );
 622                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 623                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 624                 $res = $dbr->query( $sql, __METHOD__ );
 625
 626                 # Add the results to the link cache
 627                 $lb->addResultToCache( LinkCache::singleton(), $res );
 628
 629                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 630                 $categories = array_combine( array_keys( $categories ),
 631                         array_fill( 0, count( $categories ), 'normal' ) );
 632
 633                 # Mark hidden categories
 634                 foreach ( $res as $row ) {
 635                         if ( isset( $row->pp_value ) ) {
 636                                 $categories[$row->page_title] = 'hidden';
 637                         }
 638                 }
 639
 640                 # Add the remaining categories to the skin
 641                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 642                         $sk = $wgUser->getSkin();
 643                         foreach ( $categories as $category => $type ) {
 644                                 $origcategory = $category;
 645                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 646                                 $wgContLang->findVariantLink( $category, $title, true );
 647                                 if ( $category != $origcategory )
 648                                         if ( array_key_exists( $category, $categories ) )
 649                                                 continue;
 650                                 $text = $wgContLang->convertHtml( $title->getText() );
 651                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 652                         }
 653                 }
 654         }
 655
 656         public function setCategoryLinks($categories) {
 657                 $this->mCategoryLinks = array();
 658                 $this->addCategoryLinks($categories);
 659         }
 660
 661         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 662         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 663
 664         public function disallowUserJs() { $this->mAllowUserJs = false; }
 665         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 666
 667         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 668         public function addHTML( $text ) { $this->mBodytext .= $text; }
 669         public function clearHTML() { $this->mBodytext = ''; }
 670         public function getHTML() { return $this->mBodytext; }
 671         public function debug( $text ) { $this->mDebugtext .= $text; }
 672
 673         /* @deprecated */
 674         public function setParserOptions( $options ) {
 675                 wfDeprecated( __METHOD__ );
 676                 return $this->parserOptions( $options );
 677         }
 678
 679         public function parserOptions( $options = null ) {
 680                 if ( !$this->mParserOptions ) {
 681                         $this->mParserOptions = new ParserOptions;
 682                 }
 683                 return wfSetVar( $this->mParserOptions, $options );
 684         }
 685
 686         /**
 687          * Set the revision ID which will be seen by the wiki text parser
 688          * for things such as embedded {{REVISIONID}} variable use.
 689          * @param mixed $revid an integer, or NULL
 690          * @return mixed previous value
 691          */
 692         public function setRevisionId( $revid ) {
 693                 $val = is_null( $revid ) ? null : intval( $revid );
 694                 return wfSetVar( $this->mRevisionId, $val );
 695         }
 696
 697         public function getRevisionId() {
 698                 return $this->mRevisionId;
 699         }
 700
 701         /**
 702          * Convert wikitext to HTML and add it to the buffer
 703          * Default assumes that the current page title will
 704          * be used.
 705          *
 706          * @param string $text
 707          * @param bool   $linestart
 708          */
 709         public function addWikiText( $text, $linestart = true ) {
 710                 $title = $this->getTitle(); // Work arround E_STRICT
 711                 $this->addWikiTextTitle( $text, $title, $linestart );
 712         }
 713
 714         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 715                 $this->addWikiTextTitle($text, $title, $linestart);
 716         }
 717
 718         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 719                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 720         }
 721
 722         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 723                 global $wgParser;
 724
 725                 wfProfileIn( __METHOD__ );
 726
 727                 wfIncrStats( 'pcache_not_possible' );
 728
 729                 $popts = $this->parserOptions();
 730                 $oldTidy = $popts->setTidy( $tidy );
 731
 732                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 733                         $linestart, true, $this->mRevisionId );
 734
 735                 $popts->setTidy( $oldTidy );
 736
 737                 $this->addParserOutput( $parserOutput );
 738
 739                 wfProfileOut( __METHOD__ );
 740         }
 741
 742         /**
 743          * @todo document
 744          * @param ParserOutput object &$parserOutput
 745          */
 746         public function addParserOutputNoText( &$parserOutput ) {
 747                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 748
 749                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 750                 $this->addCategoryLinks( $parserOutput->getCategories() );
 751                 $this->mNewSectionLink = $parserOutput->getNewSection();
 752                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 753
 754                 if( is_null( $wgExemptFromUserRobotsControl ) ) {
 755                         $bannedNamespaces = $wgContentNamespaces;
 756                 } else {
 757                         $bannedNamespaces = $wgExemptFromUserRobotsControl;
 758                 }
 759                 if( !in_array( $this->getTitle()->getNamespace(), $bannedNamespaces ) ) {
 760                         # FIXME (bug 14900): This overrides $wgArticleRobotPolicies, and it
 761                         # shouldn't
 762                         $this->setIndexPolicy( $parserOutput->getIndexPolicy() );
 763                 }
 764
 765                 $this->mParseWarnings = $parserOutput->getWarnings();
 766                 if ( $parserOutput->getCacheTime() == -1 ) {
 767                         $this->enableClientCache( false );
 768                 }
 769                 $this->mNoGallery = $parserOutput->getNoGallery();
 770                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 771                 // Versioning...
 772                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 773                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 774                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 775                         } else {
 776                                 $this->mTemplateIds[$ns] = $dbks;
 777                         }
 778                 }
 779                 // Page title
 780                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 781                         $this->setPageTitle( $dt );
 782                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 783                         $this->setPageTitle( $title );
 784
 785                 // Hooks registered in the object
 786                 global $wgParserOutputHooks;
 787                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 788                         list( $hookName, $data ) = $hookInfo;
 789                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 790                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 791                         }
 792                 }
 793
 794                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 795         }
 796
 797         /**
 798          * @todo document
 799          * @param ParserOutput &$parserOutput
 800          */
 801         function addParserOutput( &$parserOutput ) {
 802                 $this->addParserOutputNoText( $parserOutput );
 803                 $text = $parserOutput->getText();
 804                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 805                 $this->addHTML( $text );
 806         }
 807
 808         /**
 809          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 810          * Saves the text into the parser cache if possible.
 811          *
 812          * @param string  $text
 813          * @param Article $article
 814          * @param bool    $cache
 815          * @deprecated Use Article::outputWikitext
 816          */
 817         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 818                 global $wgParser;
 819
 820                 wfDeprecated( __METHOD__ );
 821
 822                 $popts = $this->parserOptions();
 823                 $popts->setTidy(true);
 824                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 825                         $popts, true, true, $this->mRevisionId );
 826                 $popts->setTidy(false);
 827                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 828                         $parserCache = ParserCache::singleton();
 829                         $parserCache->save( $parserOutput, $article, $popts);
 830                 }
 831
 832                 $this->addParserOutput( $parserOutput );
 833         }
 834
 835         /**
 836          * @deprecated use addWikiTextTidy()
 837          */
 838         public function addSecondaryWikiText( $text, $linestart = true ) {
 839                 wfDeprecated( __METHOD__ );
 840                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 841         }
 842
 843         /**
 844          * Add wikitext with tidy enabled
 845          */
 846         public function addWikiTextTidy(  $text, $linestart = true ) {
 847                 $title = $this->getTitle();
 848                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 849         }
 850
 851
 852         /**
 853          * Add the output of a QuickTemplate to the output buffer
 854          *
 855          * @param QuickTemplate $template
 856          */
 857         public function addTemplate( &$template ) {
 858                 ob_start();
 859                 $template->execute();
 860                 $this->addHTML( ob_get_contents() );
 861                 ob_end_clean();
 862         }
 863
 864         /**
 865          * Parse wikitext and return the HTML.
 866          *
 867          * @param string $text
 868          * @param bool   $linestart Is this the start of a line?
 869          * @param bool   $interface ??
 870          */
 871         public function parse( $text, $linestart = true, $interface = false ) {
 872                 global $wgParser;
 873                 if( is_null( $this->getTitle() ) ) {
 874                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 875                 }
 876                 $popts = $this->parserOptions();
 877                 if ( $interface) { $popts->setInterfaceMessage(true); }
 878                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 879                         $linestart, true, $this->mRevisionId );
 880                 if ( $interface) { $popts->setInterfaceMessage(false); }
 881                 return $parserOutput->getText();
 882         }
 883
 884         /** Parse wikitext, strip paragraphs, and return the HTML. */
 885         public function parseInline( $text, $linestart = true, $interface = false ) {
 886                 $parsed = $this->parse( $text, $linestart, $interface );
 887
 888                 $m = array();
 889                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 890                         $parsed = $m[1];
 891                 }
 892
 893                 return $parsed;
 894         }
 895
 896         /**
 897          * @param Article $article
 898          * @param User    $user
 899          *
 900          * @deprecated
 901          *
 902          * @return bool True if successful, else false.
 903          */
 904         public function tryParserCache( &$article ) {
 905                 wfDeprecated( __METHOD__ );
 906                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 907
 908                 if ($parserOutput !== false) {
 909                         $this->addParserOutput( $parserOutput );
 910                         return true;
 911                 } else {
 912                         return false;
 913                 }
 914         }
 915
 916         /**
 917          * @param int $maxage Maximum cache time on the Squid, in seconds.
 918          */
 919         public function setSquidMaxage( $maxage ) {
 920                 $this->mSquidMaxage = $maxage;
 921         }
 922
 923         /**
 924          * Use enableClientCache(false) to force it to send nocache headers
 925          * @param $state ??
 926          */
 927         public function enableClientCache( $state ) {
 928                 return wfSetVar( $this->mEnableClientCache, $state );
 929         }
 930
 931         function getCacheVaryCookies() {
 932                 global $wgCookiePrefix, $wgCacheVaryCookies;
 933                 static $cookies;
 934                 if ( $cookies === null ) {
 935                         $cookies = array_merge(
 936                                 array(
 937                                         "{$wgCookiePrefix}Token",
 938                                         "{$wgCookiePrefix}LoggedOut",
 939                                         session_name()
 940                                 ),
 941                                 $wgCacheVaryCookies
 942                         );
 943                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 944                 }
 945                 return $cookies;
 946         }
 947
 948         function uncacheableBecauseRequestVars() {
 949                 global $wgRequest;
 950                 return  $wgRequest->getText('useskin', false) === false
 951                         && $wgRequest->getText('uselang', false) === false;
 952         }
 953
 954         /**
 955          * Check if the request has a cache-varying cookie header
 956          * If it does, it's very important that we don't allow public caching
 957          */
 958         function haveCacheVaryCookies() {
 959                 global $wgRequest;
 960                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 961                 if ( $cookieHeader === false ) {
 962                         return false;
 963                 }
 964                 $cvCookies = $this->getCacheVaryCookies();
 965                 foreach ( $cvCookies as $cookieName ) {
 966                         # Check for a simple string match, like the way squid does it
 967                         if ( strpos( $cookieHeader, $cookieName ) ) {
 968                                 wfDebug( __METHOD__.": found $cookieName\n" );
 969                                 return true;
 970                         }
 971                 }
 972                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 973                 return false;
 974         }
 975
 976         /** Get a complete X-Vary-Options header */
 977         public function getXVO() {
 978                 $cvCookies = $this->getCacheVaryCookies();
 979                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
 980                 $first = true;
 981                 foreach ( $cvCookies as $cookieName ) {
 982                         if ( $first ) {
 983                                 $first = false;
 984                         } else {
 985                                 $xvo .= ';';
 986                         }
 987                         $xvo .= 'string-contains=' . $cookieName;
 988                 }
 989                 return $xvo;
 990         }
 991
 992         public function sendCacheControl() {
 993                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
 994
 995                 $response = $wgRequest->response();
 996                 if ($wgUseETag && $this->mETag)
 997                         $response->header("ETag: $this->mETag");
 998
 999                 # don't serve compressed data to clients who can't handle it
1000                 # maintain different caches for logged-in users and non-logged in ones
1001                 $response->header( 'Vary: Accept-Encoding, Cookie' );
1002
1003                 if ( $wgUseXVO ) {
1004                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1005                         $response->header( $this->getXVO() );
1006                 }
1007
1008                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1009                         if( $wgUseSquid && session_id() == '' &&
1010                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1011                         {
1012                                 if ( $wgUseESI ) {
1013                                         # We'll purge the proxy cache explicitly, but require end user agents
1014                                         # to revalidate against the proxy on each visit.
1015                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1016                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1017                                         # start with a shorter timeout for initial testing
1018                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1019                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1020                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1021                                 } else {
1022                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1023                                         # to revalidate against the proxy on each visit.
1024                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1025                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1026                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1027                                         # start with a shorter timeout for initial testing
1028                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1029                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1030                                 }
1031                         } else {
1032                                 # We do want clients to cache if they can, but they *must* check for updates
1033                                 # on revisiting the page.
1034                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1035                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1036                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1037                         }
1038                         if($this->mLastModified) {
1039                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1040                         }
1041                 } else {
1042                         wfDebug( __METHOD__ . ": no caching **\n", false );
1043
1044                         # In general, the absence of a last modified header should be enough to prevent
1045                         # the client from using its cache. We send a few other things just to make sure.
1046                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1047                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1048                         $response->header( 'Pragma: no-cache' );
1049                 }
1050         }
1051
1052         /**
1053          * Finally, all the text has been munged and accumulated into
1054          * the object, let's actually output it:
1055          */
1056         public function output() {
1057                 global $wgUser, $wgOutputEncoding, $wgRequest;
1058                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1059                 global $wgJsMimeType, $wgUseAjax, $wgAjaxWatch;
1060                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1061                 global $wgArticle;
1062
1063                 if( $this->mDoNothing ){
1064                         return;
1065                 }
1066                 wfProfileIn( __METHOD__ );
1067                 if ( '' != $this->mRedirect ) {
1068                         # Standards require redirect URLs to be absolute
1069                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1070                         if( $this->mRedirectCode == '301') {
1071                                 if( !$wgDebugRedirects ) {
1072                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1073                                 }
1074                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1075                         }
1076                         $this->sendCacheControl();
1077
1078                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1079                         if( $wgDebugRedirects ) {
1080                                 $url = htmlspecialchars( $this->mRedirect );
1081                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1082                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1083                                 print "</body>\n</html>\n";
1084                         } else {
1085                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1086                         }
1087                         wfProfileOut( __METHOD__ );
1088                         return;
1089                 }
1090                 elseif ( $this->mStatusCode )
1091                 {
1092                         $statusMessage = array(
1093                                 100 => 'Continue',
1094                                 101 => 'Switching Protocols',
1095                                 102 => 'Processing',
1096                                 200 => 'OK',
1097                                 201 => 'Created',
1098                                 202 => 'Accepted',
1099                                 203 => 'Non-Authoritative Information',
1100                                 204 => 'No Content',
1101                                 205 => 'Reset Content',
1102                                 206 => 'Partial Content',
1103                                 207 => 'Multi-Status',
1104                                 300 => 'Multiple Choices',
1105                                 301 => 'Moved Permanently',
1106                                 302 => 'Found',
1107                                 303 => 'See Other',
1108                                 304 => 'Not Modified',
1109                                 305 => 'Use Proxy',
1110                                 307 => 'Temporary Redirect',
1111                                 400 => 'Bad Request',
1112                                 401 => 'Unauthorized',
1113                                 402 => 'Payment Required',
1114                                 403 => 'Forbidden',
1115                                 404 => 'Not Found',
1116                                 405 => 'Method Not Allowed',
1117                                 406 => 'Not Acceptable',
1118                                 407 => 'Proxy Authentication Required',
1119                                 408 => 'Request Timeout',
1120                                 409 => 'Conflict',
1121                                 410 => 'Gone',
1122                                 411 => 'Length Required',
1123                                 412 => 'Precondition Failed',
1124                                 413 => 'Request Entity Too Large',
1125                                 414 => 'Request-URI Too Large',
1126                                 415 => 'Unsupported Media Type',
1127                                 416 => 'Request Range Not Satisfiable',
1128                                 417 => 'Expectation Failed',
1129                                 422 => 'Unprocessable Entity',
1130                                 423 => 'Locked',
1131                                 424 => 'Failed Dependency',
1132                                 500 => 'Internal Server Error',
1133                                 501 => 'Not Implemented',
1134                                 502 => 'Bad Gateway',
1135                                 503 => 'Service Unavailable',
1136                                 504 => 'Gateway Timeout',
1137                                 505 => 'HTTP Version Not Supported',
1138                                 507 => 'Insufficient Storage'
1139                         );
1140
1141                         if ( $statusMessage[$this->mStatusCode] )
1142                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1143                 }
1144
1145                 $sk = $wgUser->getSkin();
1146
1147                 // add our core scripts to output
1148                 $this->addCoreScripts2Top();
1149
1150                 if ( $wgUseAjax ) {
1151                         $this->addScriptFile( 'ajax.js' );
1152
1153                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1154
1155                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1156                                 $this->addScriptFile( 'ajaxwatch.js' );
1157                         }
1158
1159                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1160                                 $this->addScriptFile( 'mwsuggest.js' );
1161                         }
1162                 }
1163
1164                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1165                         $this->addScriptFile( 'rightclickedit.js' );
1166                 }
1167
1168                 if( $wgUniversalEditButton ) {
1169                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1170                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1171                                 // Original UniversalEditButton
1172                                 $this->addLink( array(
1173                                         'rel' => 'alternate',
1174                                         'type' => 'application/x-wiki',
1175                                         'title' => wfMsg( 'edit' ),
1176                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1177                                 ) );
1178                                 // Alternate edit link
1179                                 $this->addLink( array(
1180                                         'rel' => 'edit',
1181                                         'title' => wfMsg( 'edit' ),
1182                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1183                                 ) );
1184                         }
1185                 }
1186
1187                 # Buffer output; final headers may depend on later processing
1188                 ob_start();
1189
1190                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1191                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1192
1193                 if ($this->mArticleBodyOnly) {
1194                         $this->out($this->mBodytext);
1195                 } else {
1196                         // Hook that allows last minute changes to the output page, e.g.
1197                         // adding of CSS or Javascript by extensions.
1198                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1199
1200                         wfProfileIn( 'Output-skin' );
1201                         $sk->outputPage( $this );
1202                         wfProfileOut( 'Output-skin' );
1203                 }
1204
1205                 $this->sendCacheControl();
1206                 ob_end_flush();
1207                 wfProfileOut( __METHOD__ );
1208         }
1209
1210         /**
1211          * Actually output something with print(). Performs an iconv to the
1212          * output encoding, if needed.
1213          * @param string $ins The string to output
1214          */
1215         public function out( $ins ) {
1216                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1217                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1218                         $outs = $ins;
1219                 } else {
1220                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1221                         if ( false === $outs ) { $outs = $ins; }
1222                 }
1223                 print $outs;
1224         }
1225
1226         /**
1227          * @todo document
1228          */
1229         public static function setEncodings() {
1230                 global $wgInputEncoding, $wgOutputEncoding;
1231                 global $wgContLang;
1232
1233                 $wgInputEncoding = strtolower( $wgInputEncoding );
1234
1235                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1236                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1237                         return;
1238                 }
1239                 $wgOutputEncoding = $wgInputEncoding;
1240         }
1241
1242         /**
1243          * Deprecated, use wfReportTime() instead.
1244          * @return string
1245          * @deprecated
1246          */
1247         public function reportTime() {
1248                 wfDeprecated( __METHOD__ );
1249                 $time = wfReportTime();
1250                 return $time;
1251         }
1252
1253         /**
1254          * Produce a "user is blocked" page.
1255          *
1256          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1257          * @return nothing
1258          */
1259         function blockedPage( $return = true ) {
1260                 global $wgUser, $wgContLang, $wgLang;
1261
1262                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1263                 $this->setRobotPolicy( 'noindex,nofollow' );
1264                 $this->setArticleRelated( false );
1265
1266                 $name = User::whoIs( $wgUser->blockedBy() );
1267                 $reason = $wgUser->blockedFor();
1268                 if( $reason == '' ) {
1269                         $reason = wfMsg( 'blockednoreason' );
1270                 }
1271                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1272                 $ip = wfGetIP();
1273
1274                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1275
1276                 $blockid = $wgUser->mBlock->mId;
1277
1278                 $blockExpiry = $wgUser->mBlock->mExpiry;
1279                 if ( $blockExpiry == 'infinity' ) {
1280                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1281                         // Search for localization in 'ipboptions'
1282                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1283                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1284                                 if ( strpos( $option, ":" ) === false )
1285                                         continue;
1286                                 list( $show, $value ) = explode( ":", $option );
1287                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1288                                         $blockExpiry = $show;
1289                                         break;
1290                                 }
1291                         }
1292                 } else {
1293                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1294                 }
1295
1296                 if ( $wgUser->mBlock->mAuto ) {
1297                         $msg = 'autoblockedtext';
1298                 } else {
1299                         $msg = 'blockedtext';
1300                 }
1301
1302                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1303                  * This could be a username, an ip range, or a single ip. */
1304                 $intended = $wgUser->mBlock->mAddress;
1305
1306                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1307
1308                 # Don't auto-return to special pages
1309                 if( $return ) {
1310                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1311                         $this->returnToMain( null, $return );
1312                 }
1313         }
1314
1315         /**
1316          * Output a standard error page
1317          *
1318          * @param string $title Message key for page title
1319          * @param string $msg Message key for page text
1320          * @param array $params Message parameters
1321          */
1322         public function showErrorPage( $title, $msg, $params = array() ) {
1323                 if ( $this->getTitle() ) {
1324                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1325                 }
1326                 $this->setPageTitle( wfMsg( $title ) );
1327                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1328                 $this->setRobotPolicy( 'noindex,nofollow' );
1329                 $this->setArticleRelated( false );
1330                 $this->enableClientCache( false );
1331                 $this->mRedirect = '';
1332                 $this->mBodytext = '';
1333
1334                 array_unshift( $params, 'parse' );
1335                 array_unshift( $params, $msg );
1336                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1337
1338                 $this->returnToMain();
1339         }
1340
1341         /**
1342          * Output a standard permission error page
1343          *
1344          * @param array $errors Error message keys
1345          */
1346         public function showPermissionsErrorPage( $errors, $action = null )
1347         {
1348                 $this->mDebugtext .= 'Original title: ' .
1349                 $this->getTitle()->getPrefixedText() . "\n";
1350                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1351                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1352                 $this->setRobotPolicy( 'noindex,nofollow' );
1353                 $this->setArticleRelated( false );
1354                 $this->enableClientCache( false );
1355                 $this->mRedirect = '';
1356                 $this->mBodytext = '';
1357                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1358         }
1359
1360         /** @deprecated */
1361         public function errorpage( $title, $msg ) {
1362                 wfDeprecated( __METHOD__ );
1363                 throw new ErrorPageError( $title, $msg );
1364         }
1365
1366         /**
1367          * Display an error page indicating that a given version of MediaWiki is
1368          * required to use it
1369          *
1370          * @param mixed $version The version of MediaWiki needed to use the page
1371          */
1372         public function versionRequired( $version ) {
1373                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1374                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1375                 $this->setRobotPolicy( 'noindex,nofollow' );
1376                 $this->setArticleRelated( false );
1377                 $this->mBodytext = '';
1378
1379                 $this->addWikiMsg( 'versionrequiredtext', $version );
1380                 $this->returnToMain();
1381         }
1382
1383         /**
1384          * Display an error page noting that a given permission bit is required.
1385          *
1386          * @param string $permission key required
1387          */
1388         public function permissionRequired( $permission ) {
1389                 global $wgLang;
1390
1391                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1392                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1393                 $this->setRobotPolicy( 'noindex,nofollow' );
1394                 $this->setArticleRelated( false );
1395                 $this->mBodytext = '';
1396
1397                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1398                         User::getGroupsWithPermission( $permission ) );
1399                 if( $groups ) {
1400                         $this->addWikiMsg( 'badaccess-groups',
1401                                 $wgLang->commaList( $groups ),
1402                                 count( $groups) );
1403                 } else {
1404                         $this->addWikiMsg( 'badaccess-group0' );
1405                 }
1406                 $this->returnToMain();
1407         }
1408
1409         /**
1410          * Use permissionRequired.
1411          * @deprecated
1412          */
1413         public function sysopRequired() {
1414                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1415         }
1416
1417         /**
1418          * Use permissionRequired.
1419          * @deprecated
1420          */
1421         public function developerRequired() {
1422                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1423         }
1424
1425         /**
1426          * Produce the stock "please login to use the wiki" page
1427          */
1428         public function loginToUse() {
1429                 global $wgUser, $wgContLang;
1430
1431                 if( $wgUser->isLoggedIn() ) {
1432                         $this->permissionRequired( 'read' );
1433                         return;
1434                 }
1435
1436                 $skin = $wgUser->getSkin();
1437
1438                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1439                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1440                 $this->setRobotPolicy( 'noindex,nofollow' );
1441                 $this->setArticleFlag( false );
1442
1443                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1444                 $loginLink = $skin->link(
1445                         $loginTitle,
1446                         wfMsgHtml( 'loginreqlink' ),
1447                         array(),
1448                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1449                         array( 'known', 'noclasses' )
1450                 );
1451                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1452                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1453
1454                 # Don't return to the main page if the user can't read it
1455                 # otherwise we'll end up in a pointless loop
1456                 $mainPage = Title::newMainPage();
1457                 if( $mainPage->userCanRead() )
1458                         $this->returnToMain( null, $mainPage );
1459         }
1460
1461         /** @deprecated */
1462         public function databaseError( $fname, $sql, $error, $errno ) {
1463                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1464         }
1465
1466         /**
1467          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1468          * @return string The wikitext error-messages, formatted into a list.
1469          */
1470         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1471                 if ($action == null) {
1472                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1473                 } else {
1474                         global $wgLang;
1475                         $action_desc = wfMsgNoTrans( "action-$action" );
1476                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1477                 }
1478
1479                 if (count( $errors ) > 1) {
1480                         $text .= '<ul class="permissions-errors">' . "\n";
1481
1482                         foreach( $errors as $error )
1483                         {
1484                                 $text .= '<li>';
1485                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1486                                 $text .= "</li>\n";
1487                         }
1488                         $text .= '</ul>';
1489                 } else {
1490                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1491                 }
1492
1493                 return $text;
1494         }
1495
1496         /**
1497          * Display a page stating that the Wiki is in read-only mode,
1498          * and optionally show the source of the page that the user
1499          * was trying to edit.  Should only be called (for this
1500          * purpose) after wfReadOnly() has returned true.
1501          *
1502          * For historical reasons, this function is _also_ used to
1503          * show the error message when a user tries to edit a page
1504          * they are not allowed to edit.  (Unless it's because they're
1505          * blocked, then we show blockedPage() instead.)  In this
1506          * case, the second parameter should be set to true and a list
1507          * of reasons supplied as the third parameter.
1508          *
1509          * @todo Needs to be split into multiple functions.
1510          *
1511          * @param string $source    Source code to show (or null).
1512          * @param bool   $protected Is this a permissions error?
1513          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1514          */
1515         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1516                 global $wgUser;
1517                 $skin = $wgUser->getSkin();
1518
1519                 $this->setRobotPolicy( 'noindex,nofollow' );
1520                 $this->setArticleRelated( false );
1521
1522                 // If no reason is given, just supply a default "I can't let you do
1523                 // that, Dave" message.  Should only occur if called by legacy code.
1524                 if ( $protected && empty($reasons) ) {
1525                         $reasons[] = array( 'badaccess-group0' );
1526                 }
1527
1528                 if ( !empty($reasons) ) {
1529                         // Permissions error
1530                         if( $source ) {
1531                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1532                                 $this->setSubtitle(
1533                                         wfMsg(
1534                                                 'viewsourcefor',
1535                                                 $skin->link(
1536                                                         $this->getTitle(),
1537                                                         null,
1538                                                         array(),
1539                                                         array(),
1540                                                         array( 'known', 'noclasses' )
1541                                                 )
1542                                         )
1543                                 );
1544                         } else {
1545                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1546                         }
1547                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1548                 } else {
1549                         // Wiki is read only
1550                         $this->setPageTitle( wfMsg( 'readonly' ) );
1551                         $reason = wfReadOnlyReason();
1552                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1553                 }
1554
1555                 // Show source, if supplied
1556                 if( is_string( $source ) ) {
1557                         $this->addWikiMsg( 'viewsourcetext' );
1558                         $text = Xml::openElement( 'textarea',
1559                                                 array( 'id'   => 'wpTextbox1',
1560                                                        'name' => 'wpTextbox1',
1561                                                        'cols' => $wgUser->getOption( 'cols' ),
1562                                                        'rows' => $wgUser->getOption( 'rows' ),
1563                                                        'readonly' => 'readonly' ) );
1564                         $text .= htmlspecialchars( $source );
1565                         $text .= Xml::closeElement( 'textarea' );
1566                         $this->addHTML( $text );
1567
1568                         // Show templates used by this article
1569                         $skin = $wgUser->getSkin();
1570                         $article = new Article( $this->getTitle() );
1571                         $this->addHTML( "<div class='templatesUsed'>
1572 {$skin->formatTemplates( $article->getUsedTemplates() )}
1573 </div>
1574 " );
1575                 }
1576
1577                 # If the title doesn't exist, it's fairly pointless to print a return
1578                 # link to it.  After all, you just tried editing it and couldn't, so
1579                 # what's there to do there?
1580                 if( $this->getTitle()->exists() ) {
1581                         $this->returnToMain( null, $this->getTitle() );
1582                 }
1583         }
1584
1585         /** @deprecated */
1586         public function fatalError( $message ) {
1587                 wfDeprecated( __METHOD__ );
1588                 throw new FatalError( $message );
1589         }
1590
1591         /** @deprecated */
1592         public function unexpectedValueError( $name, $val ) {
1593                 wfDeprecated( __METHOD__ );
1594                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1595         }
1596
1597         /** @deprecated */
1598         public function fileCopyError( $old, $new ) {
1599                 wfDeprecated( __METHOD__ );
1600                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1601         }
1602
1603         /** @deprecated */
1604         public function fileRenameError( $old, $new ) {
1605                 wfDeprecated( __METHOD__ );
1606                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1607         }
1608
1609         /** @deprecated */
1610         public function fileDeleteError( $name ) {
1611                 wfDeprecated( __METHOD__ );
1612                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1613         }
1614
1615         /** @deprecated */
1616         public function fileNotFoundError( $name ) {
1617                 wfDeprecated( __METHOD__ );
1618                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1619         }
1620
1621         public function showFatalError( $message ) {
1622                 $this->setPageTitle( wfMsg( "internalerror" ) );
1623                 $this->setRobotPolicy( "noindex,nofollow" );
1624                 $this->setArticleRelated( false );
1625                 $this->enableClientCache( false );
1626                 $this->mRedirect = '';
1627                 $this->mBodytext = $message;
1628         }
1629
1630         public function showUnexpectedValueError( $name, $val ) {
1631                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1632         }
1633
1634         public function showFileCopyError( $old, $new ) {
1635                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1636         }
1637
1638         public function showFileRenameError( $old, $new ) {
1639                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1640         }
1641
1642         public function showFileDeleteError( $name ) {
1643                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1644         }
1645
1646         public function showFileNotFoundError( $name ) {
1647                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1648         }
1649
1650         /**
1651          * Add a "return to" link pointing to a specified title
1652          *
1653          * @param Title $title Title to link
1654          * @param string $query Query string
1655          */
1656         public function addReturnTo( $title, $query = array() ) {
1657                 global $wgUser;
1658                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1659                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1660                         $title, null, array(), $query ) );
1661                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1662         }
1663
1664         /**
1665          * Add a "return to" link pointing to a specified title,
1666          * or the title indicated in the request, or else the main page
1667          *
1668          * @param null $unused No longer used
1669          * @param Title $returnto Title to return to
1670          */
1671         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1672                 global $wgRequest;
1673
1674                 if ( $returnto == null ) {
1675                         $returnto = $wgRequest->getText( 'returnto' );
1676                 }
1677
1678                 if ( $returntoquery == null ) {
1679                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1680                 }
1681
1682                 if ( '' === $returnto ) {
1683                         $returnto = Title::newMainPage();
1684                 }
1685
1686                 if ( is_object( $returnto ) ) {
1687                         $titleObj = $returnto;
1688                 } else {
1689                         $titleObj = Title::newFromText( $returnto );
1690                 }
1691                 if ( !is_object( $titleObj ) ) {
1692                         $titleObj = Title::newMainPage();
1693                 }
1694
1695                 $this->addReturnTo( $titleObj, $returntoquery );
1696         }
1697
1698         /**
1699          * @return string The doctype, opening <html>, and head element.
1700          */
1701         public function headElement( Skin $sk ) {
1702                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1703                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1704                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1705
1706                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1707                 if ( $sk->commonPrintStylesheet() ) {
1708                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1709                 }
1710                 $sk->setupUserCss( $this );
1711
1712                 $ret = '';
1713
1714                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1715                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1716                 }
1717
1718                 if ( '' == $this->getHTMLTitle() ) {
1719                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1720                 }
1721
1722                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
1723
1724                 if ( $wgHtml5 ) {
1725                         $ret .= "<!doctype html>\n";
1726                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1727                 } else {
1728                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1729                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1730                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1731                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1732                         }
1733                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1734                 }
1735
1736                 $ret .= "<head>\n\t<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n\t";
1737                 $ret .= implode( "\n", array(
1738                         $this->getHeadLinks(),
1739                         $this->buildCssLinks(),
1740                         $sk->getHeadScripts( $this ),
1741                         $this->getHeadItems(),
1742                 ));
1743                 if( $sk->usercss ){
1744                         $ret .= "<style type='text/css'>{$sk->usercss}</style>";
1745                 }
1746
1747                 if( $wgEnableScriptLoader )
1748                         $ret .= $this->getScriptLoaderJs();
1749
1750                 if ($wgUseTrackbacks && $this->isArticleRelated())
1751                         $ret .= $this->getTitle()->trackbackRDF();
1752
1753                 $ret .= "</head>\n";
1754                 return $ret;
1755         }
1756
1757         protected function addDefaultMeta() {
1758                 global $wgVersion, $wgHtml5;
1759
1760                 static $called = false;
1761                 if ( $called ) {
1762                         # Don't run this twice
1763                         return;
1764                 }
1765                 $called = true;
1766
1767                 if ( !$wgHtml5 ) {
1768                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1769                 }
1770                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1771
1772                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1773                 if( $p !== 'index,follow' ) {
1774                         // http://www.robotstxt.org/wc/meta-user.html
1775                         // Only show if it's different from the default robots policy
1776                         $this->addMeta( 'robots', $p );
1777                 }
1778
1779                 if ( count( $this->mKeywords ) > 0 ) {
1780                         $strip = array(
1781                                 "/<.*?" . ">/" => '',
1782                                 "/_/" => ' '
1783                         );
1784                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1785                 }
1786         }
1787
1788         /**
1789          * @return string HTML tag links to be put in the header.
1790          */
1791         public function getHeadLinks() {
1792                 global $wgRequest, $wgFeed;
1793
1794                 // Ideally this should happen earlier, somewhere. :P
1795                 $this->addDefaultMeta();
1796
1797                 $tags = array();
1798
1799                 foreach ( $this->mMetatags as $tag ) {
1800                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1801                                 $a = 'http-equiv';
1802                                 $tag[0] = substr( $tag[0], 5 );
1803                         } else {
1804                                 $a = 'name';
1805                         }
1806                         $tags[] = Xml::element( 'meta',
1807                                 array(
1808                                         $a => $tag[0],
1809                                         'content' => $tag[1] ) );
1810                 }
1811                 foreach ( $this->mLinktags as $tag ) {
1812                         $tags[] = Xml::element( 'link', $tag );
1813                 }
1814
1815                 if( $wgFeed ) {
1816                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1817                                 # Use the page name for the title (accessed through $wgTitle since
1818                                 # there's no other way).  In principle, this could lead to issues
1819                                 # with having the same name for different feeds corresponding to
1820                                 # the same page, but we can't avoid that at this low a level.
1821
1822                                 $tags[] = $this->feedLink(
1823                                         $format,
1824                                         $link,
1825                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1826                         }
1827
1828                         # Recent changes feed should appear on every page (except recentchanges,
1829                         # that would be redundant). Put it after the per-page feed to avoid
1830                         # changing existing behavior. It's still available, probably via a
1831                         # menu in your browser. Some sites might have a different feed they'd
1832                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1833                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1834                         # If so, use it instead.
1835
1836                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1837                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1838
1839                         if ( $wgOverrideSiteFeed ) {
1840                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1841                                         $tags[] = $this->feedLink (
1842                                                 $type,
1843                                                 htmlspecialchars( $feedUrl ),
1844                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1845                                 }
1846                         }
1847                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1848                                 foreach( $wgFeedClasses as $format => $class ) {
1849                                         $tags[] = $this->feedLink(
1850                                                 $format,
1851                                                 $rctitle->getLocalURL( "feed={$format}" ),
1852                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1853                                 }
1854                         }
1855                 }
1856
1857                 return implode( "\n\t", $tags ) . "\n";
1858         }
1859
1860         /**
1861          * Return URLs for each supported syndication format for this page.
1862          * @return array associating format keys with URLs
1863          */
1864         public function getSyndicationLinks() {
1865                 global $wgFeedClasses;
1866                 $links = array();
1867
1868                 if( $this->isSyndicated() ) {
1869                         if( is_string( $this->getFeedAppendQuery() ) ) {
1870                                 $appendQuery = "&" . $this->getFeedAppendQuery();
1871                         } else {
1872                                 $appendQuery = "";
1873                         }
1874
1875                         foreach( $wgFeedClasses as $format => $class ) {
1876                                 $links[$format] = $this->getTitle()->getLocalUrl( "feed=$format{$appendQuery}" );
1877                         }
1878                 }
1879                 return $links;
1880         }
1881
1882         /**
1883          * Generate a <link rel/> for an RSS feed.
1884          */
1885         private function feedLink( $type, $url, $text ) {
1886                 return Xml::element( 'link', array(
1887                         'rel' => 'alternate',
1888                         'type' => "application/$type+xml",
1889                         'title' => $text,
1890                         'href' => $url ) );
1891         }
1892
1893         /**
1894          * Add a local or specified stylesheet, with the given media options.
1895          * Meant primarily for internal use...
1896          *
1897          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1898          * @param $conditional -- for IE conditional comments, specifying an IE version
1899          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1900          */
1901         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1902                 $options = array();
1903                 // In Opera, fullscreen mode is treated as projection mode, and it causes
1904                 // styles set for screen to not be loaded - thus breaking the page -  so
1905                 // we can just append projection to the media attribute when it's screen
1906                 // so the browser is happy and - with no side-effects on other browsers.
1907                 // Also - even though we expect the media type to be lowercase, but here
1908                 // we force it to lowercase to be safe.
1909                 if ( strtolower( $media ) == 'screen' )
1910                         $media .= ',projection';
1911                 if( $media )
1912                         $options['media'] = $media;
1913                 if( $condition )
1914                         $options['condition'] = $condition;
1915                 if( $dir )
1916                         $options['dir'] = $dir;
1917                 $this->styles[$style] = $options;
1918         }
1919
1920         /**
1921          * Adds inline CSS styles
1922          * @param $style_css Mixed: inline CSS
1923          */
1924         public function addInlineStyle( $style_css ){
1925                 $this->mScripts .= "<style type=\"text/css\">$style_css</style>";
1926         }
1927
1928         /**
1929          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1930          * These will be applied to various media & IE conditionals.
1931          */
1932         public function buildCssLinks() {
1933                 $links = array();
1934                 foreach( $this->styles as $file => $options ) {
1935                         $link = $this->styleLink( $file, $options );
1936                         if( $link )
1937                                 $links[] = $link;
1938                 }
1939
1940                 return "\t" . implode( "\n\t", $links );
1941         }
1942
1943         protected function styleLink( $style, $options ) {
1944                 global $wgRequest;
1945
1946                 if( isset( $options['dir'] ) ) {
1947                         global $wgContLang;
1948                         $siteDir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
1949                         if( $siteDir != $options['dir'] )
1950                                 return '';
1951                 }
1952
1953                 if( isset( $options['media'] ) ) {
1954                         $media = $this->transformCssMedia( $options['media'] );
1955                         if( is_null( $media ) ) {
1956                                 return '';
1957                         }
1958                 } else {
1959                         $media = '';
1960                 }
1961
1962                 if( substr( $style, 0, 1 ) == '/' ||
1963                         substr( $style, 0, 5 ) == 'http:' ||
1964                         substr( $style, 0, 6 ) == 'https:' ) {
1965                         $url = $style;
1966                 } else {
1967                         global $wgStylePath, $wgStyleVersion;
1968                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
1969                 }
1970
1971                 $attribs = array(
1972                         'rel' => 'stylesheet',
1973                         'href' => $url,
1974                         'type' => 'text/css' );
1975                 if( $media ) {
1976                         $attribs['media'] = $media;
1977                 }
1978
1979                 $link = Xml::element( 'link', $attribs );
1980
1981                 if( isset( $options['condition'] ) ) {
1982                         $condition = htmlspecialchars( $options['condition'] );
1983                         $link = "<!--[if $condition]>$link<![endif]-->";
1984                 }
1985                 return $link;
1986         }
1987
1988         function transformCssMedia( $media ) {
1989                 global $wgRequest, $wgHandheldForIPhone;
1990
1991                 // Switch in on-screen display for media testing
1992                 $switches = array(
1993                         'printable' => 'print',
1994                         'handheld' => 'handheld',
1995                 );
1996                 foreach( $switches as $switch => $targetMedia ) {
1997                         if( $wgRequest->getBool( $switch ) ) {
1998                                 if( $media == $targetMedia ) {
1999                                         $media = '';
2000                                 } elseif( $media == 'screen' ) {
2001                                         return null;
2002                                 }
2003                         }
2004                 }
2005
2006                 // Expand longer media queries as iPhone doesn't grok 'handheld'
2007                 if( $wgHandheldForIPhone ) {
2008                         $mediaAliases = array(
2009                                 'screen' => 'screen and (min-device-width: 481px)',
2010                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
2011                         );
2012
2013                         if( isset( $mediaAliases[$media] ) ) {
2014                                 $media = $mediaAliases[$media];
2015                         }
2016                 }
2017
2018                 return $media;
2019         }
2020
2021         /**
2022          * Turn off regular page output and return an error reponse
2023          * for when rate limiting has triggered.
2024          */
2025         public function rateLimited() {
2026
2027                 $this->setPageTitle(wfMsg('actionthrottled'));
2028                 $this->setRobotPolicy( 'noindex,follow' );
2029                 $this->setArticleRelated( false );
2030                 $this->enableClientCache( false );
2031                 $this->mRedirect = '';
2032                 $this->clearHTML();
2033                 $this->setStatusCode(503);
2034                 $this->addWikiMsg( 'actionthrottledtext' );
2035
2036                 $this->returnToMain( null, $this->getTitle() );
2037         }
2038
2039         /**
2040          * Show an "add new section" link?
2041          *
2042          * @return bool
2043          */
2044         public function showNewSectionLink() {
2045                 return $this->mNewSectionLink;
2046         }
2047
2048         /**
2049         * Forcibly hide the new section link?
2050         *
2051         * @return bool
2052         */
2053         public function forceHideNewSectionLink() {
2054                 return $this->mHideNewSectionLink;
2055         }
2056
2057         /**
2058          * Show a warning about slave lag
2059          *
2060          * If the lag is higher than $wgSlaveLagCritical seconds,
2061          * then the warning is a bit more obvious. If the lag is
2062          * lower than $wgSlaveLagWarning, then no warning is shown.
2063          *
2064          * @param int $lag Slave lag
2065          */
2066         public function showLagWarning( $lag ) {
2067                 global $wgSlaveLagWarning, $wgSlaveLagCritical;
2068                 if( $lag >= $wgSlaveLagWarning ) {
2069                         $message = $lag < $wgSlaveLagCritical
2070                                 ? 'lag-warn-normal'
2071                                 : 'lag-warn-high';
2072                         $warning = wfMsgExt( $message, 'parse', $lag );
2073                         $this->addHTML( "<div class=\"mw-{$message}\">\n{$warning}\n</div>\n" );
2074                 }
2075         }
2076
2077         /**
2078          * Add a wikitext-formatted message to the output.
2079          * This is equivalent to:
2080          *
2081          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2082          */
2083         public function addWikiMsg( /*...*/ ) {
2084                 $args = func_get_args();
2085                 $name = array_shift( $args );
2086                 $this->addWikiMsgArray( $name, $args );
2087         }
2088
2089         /**
2090          * Add a wikitext-formatted message to the output.
2091          * Like addWikiMsg() except the parameters are taken as an array
2092          * instead of a variable argument list.
2093          *
2094          * $options is passed through to wfMsgExt(), see that function for details.
2095          */
2096         public function addWikiMsgArray( $name, $args, $options = array() ) {
2097                 $options[] = 'parse';
2098                 $text = wfMsgExt( $name, $options, $args );
2099                 $this->addHTML( $text );
2100         }
2101
2102         /**
2103          * This function takes a number of message/argument specifications, wraps them in
2104          * some overall structure, and then parses the result and adds it to the output.
2105          *
2106          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2107          * on. The subsequent arguments may either be strings, in which case they are the
2108          * message names, or arrays, in which case the first element is the message name,
2109          * and subsequent elements are the parameters to that message.
2110          *
2111          * The special named parameter 'options' in a message specification array is passed
2112          * through to the $options parameter of wfMsgExt().
2113          *
2114          * Don't use this for messages that are not in users interface language.
2115          *
2116          * For example:
2117          *
2118          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2119          *
2120          * Is equivalent to:
2121          *
2122          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2123          */
2124         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2125                 $msgSpecs = func_get_args();
2126                 array_shift( $msgSpecs );
2127                 $msgSpecs = array_values( $msgSpecs );
2128                 $s = $wrap;
2129                 foreach ( $msgSpecs as $n => $spec ) {
2130                         $options = array();
2131                         if ( is_array( $spec ) ) {
2132                                 $args = $spec;
2133                                 $name = array_shift( $args );
2134                                 if ( isset( $args['options'] ) ) {
2135                                         $options = $args['options'];
2136                                         unset( $args['options'] );
2137                                 }
2138                         }  else {
2139                                 $args = array();
2140                                 $name = $spec;
2141                         }
2142                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2143                 }
2144                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2145         }
2146 }