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                 global $wgHtml5;
 113                 $linkarr = array( 'rel' => 'stylesheet', 'href' => $url );
 114                 if ( !$wgHtml5 ) {
 115                         # type attribute is mandatory in XHTML 1.0 Transitional
 116                         $linkarr['type'] = 'text/css';
 117                 }
 118                 array_push( $this->mExtStyles, $linkarr );
 119         }
 120
 121         /**
 122          * Add a JavaScript file out of skins/common, or a given relative path.
 123          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 124          */
 125         function addScriptFile( $file ) {
 126                 global $wgStylePath, $wgStyleVersion, $wgJsMimeType, $wgScript, $wgUser, $wgHtml5;
 127                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgEnableScriptLoader, $wgScriptPath;
 128
 129                 if( substr( $file, 0, 1 ) == '/' ) {
 130                         $path = $file;
 131                 } else {
 132                         $path = "{$wgStylePath}/common/{$file}";
 133                 }
 134
 135                 if( $wgEnableScriptLoader ){
 136                         if( strpos( $path, $wgScript ) !== false ){
 137                                 $reqPath = str_replace( $wgScript . '?', '', $path );
 138                                 $reqArgs = explode( '&', $reqPath );
 139                                 $reqSet = array();
 140
 141                                 foreach( $reqArgs as $arg ){
 142                                         list( $key, $var ) = explode( '=', $arg );
 143                                         $reqSet[$key] = $var;
 144                                 }
 145
 146                                 if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 147                                         // extract any extra param (for now just skin)
 148                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' ) ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 149                                         $this->mScriptLoaderClassList[] = 'WT:' . $reqSet['title'] . $ext_param ;
 150                                         // add the title revision to the key
 151                                         $t = Title::newFromText( $reqSet['title'] );
 152                                         // if there is no title (don't worry we just use the $wgStyleVersion var (which should be updated on relevant commits)
 153                                         if( $t && $t->exists() ){
 154                                                 if( $t->getLatestRevID() > $this->mLatestScriptRevID  )
 155                                                         $this->mLatestScriptRevID = $t->getLatestRevID();
 156                                         }
 157                                         return true;
 158                                 }
 159                         }
 160
 161                         // check for class from path:
 162                         $js_class = $this->getJsClassFromPath( $path );
 163                         if( $js_class ){
 164                                 // add to the class list:
 165                                 $this->mScriptLoaderClassList[] = $js_class;
 166                                 return true;
 167                         }
 168                 }
 169
 170                 // if the script loader did not find a way to add the script than add using addScript
 171                 $attrs = array( 'src' => wfAppendQuery( $path, $this->getURIDparam() ) );
 172                 if ( !$wgHtml5 ) {
 173                         $attrs['type'] = $wgJsMimeType;
 174                 }
 175                 $this->addScript( Xml::element( 'script', $attrs, '', false ) );
 176         }
 177
 178         /**
 179          * This is the core script that is included on every page
 180          * (they are requested separately to improve caching across
 181          *  different page load types (edit, upload, view, etc)
 182          */
 183         function addCoreScripts2Top(){
 184                 global $wgEnableScriptLoader, $wgStyleVersion, $wgJSAutoloadLocalClasses,
 185                         $wgJsMimeType, $wgScriptPath, $wgEnableJS2system, $wgHtml5;
 186                 //@@todo we should deprecate wikibits in favor of mv_embed and native jQuery functions
 187
 188                 if( $wgEnableJS2system ){
 189                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 190                 } else {
 191                         $core_classes = array( 'wikibits' );
 192                 }
 193
 194                 if( $wgEnableScriptLoader ){
 195                         $this->mScripts = $this->getScriptLoaderJs( $core_classes ) . $this->mScripts;
 196                 } else {
 197                         $so = '';
 198                         foreach( $core_classes as $s ){
 199                                 if( isset( $wgJSAutoloadLocalClasses[$s] ) ){
 200                                         $attrs = array( 'src' => "{$wgScriptPath}/{$wgJSAutoloadLocalClasses[$s]}?" . $this->getURIDparam() );
 201                                         if ( !$wgHtml5 ) {
 202                                                 $attrs['type'] = $wgJsMimeType;
 203                                         }
 204                                         $so.= Xml::element( 'script', $attrs, '', false );
 205                                 }
 206                         }
 207                         $this->mScripts =  $so . $this->mScripts;
 208                 }
 209         }
 210
 211         /**
 212          * @param $js_class String: name of JavaScript class
 213          * @return Boolean: false if class wasn't found, true on success
 214          */
 215         function addScriptClass( $js_class ){
 216                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 217                         $wgJsMimeType, $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath, $wgHtml5;
 218
 219                 if( isset( $wgJSAutoloadClasses[$js_class] ) || isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
 220                         if( $wgEnableScriptLoader ){
 221                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ){
 222                                         $this->mScriptLoaderClassList[] = $js_class;
 223                                 }
 224                         } else {
 225                                 // do a normal load of without the script-loader:
 226                                 $path = $wgScriptPath . '/';
 227                                 if( isset( $wgJSAutoloadClasses[$js_class] ) ){
 228                                         $path.= $wgJSAutoloadClasses[$js_class];
 229                                 }else if( isset( $wgJSAutoloadLocalClasses[$js_class] ) ){
 230                                         $path.= $wgJSAutoloadLocalClasses[$js_class];
 231                                 }
 232                                 $urlAppend = ( $wgDebugJavaScript) ? time() : $wgStyleVersion;
 233                                 $attrs = array( 'src' => "$path?$urlAppend" );
 234                                 if ( !$wgHtml5 ) {
 235                                         $attrs['type'] = $wgJsMimeType;
 236                                 }
 237                                 $this->addScript( Xml::element( 'script', $attrs, '', false ) );
 238                         }
 239                         return true;
 240                 }
 241                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 242                 return false; // could not find the class
 243         }
 244
 245         /**
 246          * gets the scriptLoader javascript include
 247          * @param $forcClassAry Boolean: false by default
 248          */
 249         function getScriptLoaderJs( $forceClassAry = false ){
 250                 global $wgJsMimeType, $wgStyleVersion, $wgRequest, $wgDebugJavaScript, $wgHtml5;
 251
 252                 if( !$forceClassAry ){
 253                         $class_list = implode( ',', $this->mScriptLoaderClassList );
 254                 } else {
 255                         $class_list = implode( ',', $forceClassAry );
 256                 }
 257
 258                 $debug_param = ( $wgDebugJavaScript ||
 259                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 260                                                  $wgRequest->getVal( 'debug' ) == '1' )
 261                                          ? '&debug=true' : '';
 262
 263                 //@@todo intelligent unique id generation based on svn version of file (rather than just grabbing the $wgStyleVersion var)
 264                 //@@todo we should check the packaged message text in this javascript file for updates and update the $mScriptLoaderURID id (in getJsClassFromPath)
 265
 266                 //generate the unique request param (combine with the most recent revision id of any wiki page with the $wgStyleVersion var)
 267
 268                 $attrs = array( 'src' => wfScript( 'mwScriptLoader' ) . "?class={$class_list}{$debug_param}&".$this->getURIDparam() );
 269                 if ( !$wgHtml5 ) {
 270                         $attrs['type'] = $wgJsMimeType;
 271                 }
 272                 return Xml::element( 'script', $attrs, '', false );
 273         }
 274
 275         function getURIDparam(){
 276                 global $wgDebugJavaScript, $wgStyleVersion;
 277                 if( $wgDebugJavaScript ){
 278                         return 'urid=' . time();
 279                 } else {
 280                         return "urid={$wgStyleVersion}_{$this->mLatestScriptRevID}";
 281                 }
 282         }
 283
 284         function getJsClassFromPath( $path ){
 285                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 286
 287                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 288                 foreach( $scriptLoaderPaths as $js_class => $js_path ){
 289                         $js_path = "{$wgScriptPath}/{$js_path}";
 290                         if( $path == $js_path )
 291                                 return $js_class;
 292                 }
 293                 return false;
 294         }
 295
 296         /**
 297          * Add a self-contained script tag with the given contents
 298          * @param string $script JavaScript text, no <script> tags
 299          */
 300         function addInlineScript( $script ) {
 301                 global $wgJsMimeType, $wgHtml5;
 302                 $this->mScripts .= "\t\t<script" . ($wgHtml5 ? '' : " type=\"$wgJsMimeType\"")
 303                         . ">/*<![CDATA[*/\n\t\t$script\n\t\t/*]]>*/</script>\n";
 304         }
 305
 306         function getScript() {
 307                 global $wgEnableScriptLoader;
 308                 if( $wgEnableScriptLoader ){
 309                         //include $this->mScripts (for anything that we could not package into the scriptloader
 310                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 311                 } else {
 312                         return $this->mScripts . $this->getHeadItems();
 313                 }
 314         }
 315
 316         function getHeadItems() {
 317                 $s = '';
 318                 foreach ( $this->mHeadItems as $item ) {
 319                         $s .= $item;
 320                 }
 321                 return $s;
 322         }
 323
 324         function addHeadItem( $name, $value ) {
 325                 $this->mHeadItems[$name] = $value;
 326         }
 327
 328         function hasHeadItem( $name ) {
 329                 return isset( $this->mHeadItems[$name] );
 330         }
 331
 332         function setETag($tag) { $this->mETag = $tag; }
 333         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 334         function getArticleBodyOnly($only) { return $this->mArticleBodyOnly; }
 335
 336         function addLink( $linkarr ) {
 337                 # $linkarr should be an associative array of attributes. We'll escape on output.
 338                 array_push( $this->mLinktags, $linkarr );
 339         }
 340
 341         # Get all links added by extensions
 342         function getExtStyle() {
 343                 return $this->mExtStyles;
 344         }
 345
 346         function addMetadataLink( $linkarr ) {
 347                 # note: buggy CC software only reads first "meta" link
 348                 static $haveMeta = false;
 349                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 350                 $this->addLink( $linkarr );
 351                 $haveMeta = true;
 352         }
 353
 354         /**
 355          * checkLastModified tells the client to use the client-cached page if
 356          * possible. If sucessful, the OutputPage is disabled so that
 357          * any future call to OutputPage->output() have no effect.
 358          *
 359          * Side effect: sets mLastModified for Last-Modified header
 360          *
 361          * @return bool True iff cache-ok headers was sent.
 362          */
 363         function checkLastModified( $timestamp ) {
 364                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 365
 366                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 367                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 368                         return false;
 369                 }
 370                 if( !$wgCachePages ) {
 371                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 372                         return false;
 373                 }
 374                 if( $wgUser->getOption( 'nocache' ) ) {
 375                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 376                         return false;
 377                 }
 378
 379                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 380                 $modifiedTimes = array(
 381                         'page' => $timestamp,
 382                         'user' => $wgUser->getTouched(),
 383                         'epoch' => $wgCacheEpoch
 384                 );
 385                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 386
 387                 $maxModified = max( $modifiedTimes );
 388                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 389
 390                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 391                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 392                         return false;
 393                 }
 394
 395                 # Make debug info
 396                 $info = '';
 397                 foreach ( $modifiedTimes as $name => $value ) {
 398                         if ( $info !== '' ) {
 399                                 $info .= ', ';
 400                         }
 401                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 402                 }
 403
 404                 # IE sends sizes after the date like this:
 405                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 406                 # this breaks strtotime().
 407                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 408
 409                 wfSuppressWarnings(); // E_STRICT system time bitching
 410                 $clientHeaderTime = strtotime( $clientHeader );
 411                 wfRestoreWarnings();
 412                 if ( !$clientHeaderTime ) {
 413                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 414                         return false;
 415                 }
 416                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 417
 418                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 419                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 420                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 421                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 422                 if( $clientHeaderTime < $maxModified ) {
 423                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 424                         return false;
 425                 }
 426
 427                 # Not modified
 428                 # Give a 304 response code and disable body output
 429                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 430                 ini_set('zlib.output_compression', 0);
 431                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 432                 $this->sendCacheControl();
 433                 $this->disable();
 434
 435                 // Don't output a compressed blob when using ob_gzhandler;
 436                 // it's technically against HTTP spec and seems to confuse
 437                 // Firefox when the response gets split over two packets.
 438                 wfClearOutputBuffers();
 439
 440                 return true;
 441         }
 442
 443         function setPageTitleActionText( $text ) {
 444                 $this->mPageTitleActionText = $text;
 445         }
 446
 447         function getPageTitleActionText () {
 448                 if ( isset( $this->mPageTitleActionText ) ) {
 449                         return $this->mPageTitleActionText;
 450                 }
 451         }
 452
 453         /**
 454          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 455          *
 456          * @param $policy string The literal string to output as the contents of
 457          *   the meta tag.  Will be parsed according to the spec and output in
 458          *   standardized form.
 459          * @return null
 460          */
 461         public function setRobotPolicy( $policy ) {
 462                 $policy = explode( ',', $policy );
 463                 $policy = array_map( 'trim', $policy );
 464
 465                 # The default policy is follow, so if nothing is said explicitly, we
 466                 # do that.
 467                 if( in_array( 'nofollow', $policy ) ) {
 468                         $this->mFollowPolicy = 'nofollow';
 469                 } else {
 470                         $this->mFollowPolicy = 'follow';
 471                 }
 472
 473                 if( in_array( 'noindex', $policy ) ) {
 474                         $this->mIndexPolicy = 'noindex';
 475                 } else {
 476                         $this->mIndexPolicy = 'index';
 477                 }
 478         }
 479
 480         /**
 481          * Set the index policy for the page, but leave the follow policy un-
 482          * touched.
 483          *
 484          * @param $policy string Either 'index' or 'noindex'.
 485          * @return null
 486          */
 487         public function setIndexPolicy( $policy ) {
 488                 $policy = trim( $policy );
 489                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 490                         $this->mIndexPolicy = $policy;
 491                 }
 492         }
 493
 494         /**
 495          * Set the follow policy for the page, but leave the index policy un-
 496          * touched.
 497          *
 498          * @param $policy string Either 'follow' or 'nofollow'.
 499          * @return null
 500          */
 501         public function setFollowPolicy( $policy ) {
 502                 $policy = trim( $policy );
 503                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 504                         $this->mFollowPolicy = $policy;
 505                 }
 506         }
 507
 508         /**
 509          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 510          */
 511         public function setHTMLTitle( $name ) {
 512                 $this->mHTMLtitle = $name;
 513         }
 514
 515         /**
 516          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 517          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 518          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 519          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 520          */
 521         public function setPageTitle( $name ) {
 522                 global $wgContLang;
 523                 $name = $wgContLang->convert( $name, true );
 524                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 525                 # but leave "<i>foobar</i>" alone
 526                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 527                 $this->mPagetitle = $nameWithTags;
 528
 529                 $taction =  $this->getPageTitleActionText();
 530                 if( !empty( $taction ) ) {
 531                         $name .= ' - '.$taction;
 532                 }
 533
 534                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 535                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 536         }
 537
 538         public function setTitle( $t ) {
 539                 $this->mTitle = $t;
 540         }
 541
 542         public function getTitle() {
 543                 if ( $this->mTitle instanceof Title ) {
 544                         return $this->mTitle;
 545                 }
 546                 else {
 547                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 548                         global $wgTitle;
 549                         return $wgTitle;
 550                 }
 551         }
 552
 553         public function getHTMLTitle() { return $this->mHTMLtitle; }
 554         public function getPageTitle() { return $this->mPagetitle; }
 555         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 556         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 557         public function getSubtitle() { return $this->mSubtitle; }
 558         public function isArticle() { return $this->mIsarticle; }
 559         public function setPrintable() { $this->mPrintable = true; }
 560         public function isPrintable() { return $this->mPrintable; }
 561         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 562         public function isSyndicated() { return $this->mShowFeedLinks; }
 563         public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
 564         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 565         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 566         public function getOnloadHandler() { return $this->mOnloadHandler; }
 567         public function disable() { $this->mDoNothing = true; }
 568         public function isDisabled() { return $this->mDoNothing; }
 569
 570         public function setArticleRelated( $v ) {
 571                 $this->mIsArticleRelated = $v;
 572                 if ( !$v ) {
 573                         $this->mIsarticle = false;
 574                 }
 575         }
 576         public function setArticleFlag( $v ) {
 577                 $this->mIsarticle = $v;
 578                 if ( $v ) {
 579                         $this->mIsArticleRelated = $v;
 580                 }
 581         }
 582
 583         public function isArticleRelated() { return $this->mIsArticleRelated; }
 584
 585         public function getLanguageLinks() { return $this->mLanguageLinks; }
 586         public function addLanguageLinks($newLinkArray) {
 587                 $this->mLanguageLinks += $newLinkArray;
 588         }
 589         public function setLanguageLinks($newLinkArray) {
 590                 $this->mLanguageLinks = $newLinkArray;
 591         }
 592
 593         public function getCategoryLinks() {
 594                 return $this->mCategoryLinks;
 595         }
 596
 597         /**
 598          * Add an array of categories, with names in the keys
 599          */
 600         public function addCategoryLinks( $categories ) {
 601                 global $wgUser, $wgContLang;
 602
 603                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 604                         return;
 605                 }
 606
 607                 # Add the links to a LinkBatch
 608                 $arr = array( NS_CATEGORY => $categories );
 609                 $lb = new LinkBatch;
 610                 $lb->setArray( $arr );
 611
 612                 # Fetch existence plus the hiddencat property
 613                 $dbr = wfGetDB( DB_SLAVE );
 614                 $pageTable = $dbr->tableName( 'page' );
 615                 $where = $lb->constructSet( 'page', $dbr );
 616                 $propsTable = $dbr->tableName( 'page_props' );
 617                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 618                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 619                 $res = $dbr->query( $sql, __METHOD__ );
 620
 621                 # Add the results to the link cache
 622                 $lb->addResultToCache( LinkCache::singleton(), $res );
 623
 624                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 625                 $categories = array_combine( array_keys( $categories ),
 626                         array_fill( 0, count( $categories ), 'normal' ) );
 627
 628                 # Mark hidden categories
 629                 foreach ( $res as $row ) {
 630                         if ( isset( $row->pp_value ) ) {
 631                                 $categories[$row->page_title] = 'hidden';
 632                         }
 633                 }
 634
 635                 # Add the remaining categories to the skin
 636                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 637                         $sk = $wgUser->getSkin();
 638                         foreach ( $categories as $category => $type ) {
 639                                 $origcategory = $category;
 640                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 641                                 $wgContLang->findVariantLink( $category, $title, true );
 642                                 if ( $category != $origcategory )
 643                                         if ( array_key_exists( $category, $categories ) )
 644                                                 continue;
 645                                 $text = $wgContLang->convertHtml( $title->getText() );
 646                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 647                         }
 648                 }
 649         }
 650
 651         public function setCategoryLinks($categories) {
 652                 $this->mCategoryLinks = array();
 653                 $this->addCategoryLinks($categories);
 654         }
 655
 656         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 657         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 658
 659         public function disallowUserJs() { $this->mAllowUserJs = false; }
 660         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 661
 662         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 663         public function addHTML( $text ) { $this->mBodytext .= $text; }
 664         public function clearHTML() { $this->mBodytext = ''; }
 665         public function getHTML() { return $this->mBodytext; }
 666         public function debug( $text ) { $this->mDebugtext .= $text; }
 667
 668         /* @deprecated */
 669         public function setParserOptions( $options ) {
 670                 wfDeprecated( __METHOD__ );
 671                 return $this->parserOptions( $options );
 672         }
 673
 674         public function parserOptions( $options = null ) {
 675                 if ( !$this->mParserOptions ) {
 676                         $this->mParserOptions = new ParserOptions;
 677                 }
 678                 return wfSetVar( $this->mParserOptions, $options );
 679         }
 680
 681         /**
 682          * Set the revision ID which will be seen by the wiki text parser
 683          * for things such as embedded {{REVISIONID}} variable use.
 684          * @param mixed $revid an integer, or NULL
 685          * @return mixed previous value
 686          */
 687         public function setRevisionId( $revid ) {
 688                 $val = is_null( $revid ) ? null : intval( $revid );
 689                 return wfSetVar( $this->mRevisionId, $val );
 690         }
 691
 692         public function getRevisionId() {
 693                 return $this->mRevisionId;
 694         }
 695
 696         /**
 697          * Convert wikitext to HTML and add it to the buffer
 698          * Default assumes that the current page title will
 699          * be used.
 700          *
 701          * @param string $text
 702          * @param bool   $linestart
 703          */
 704         public function addWikiText( $text, $linestart = true ) {
 705                 $title = $this->getTitle(); // Work arround E_STRICT
 706                 $this->addWikiTextTitle( $text, $title, $linestart );
 707         }
 708
 709         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 710                 $this->addWikiTextTitle($text, $title, $linestart);
 711         }
 712
 713         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 714                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 715         }
 716
 717         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 718                 global $wgParser;
 719
 720                 wfProfileIn( __METHOD__ );
 721
 722                 wfIncrStats( 'pcache_not_possible' );
 723
 724                 $popts = $this->parserOptions();
 725                 $oldTidy = $popts->setTidy( $tidy );
 726
 727                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 728                         $linestart, true, $this->mRevisionId );
 729
 730                 $popts->setTidy( $oldTidy );
 731
 732                 $this->addParserOutput( $parserOutput );
 733
 734                 wfProfileOut( __METHOD__ );
 735         }
 736
 737         /**
 738          * @todo document
 739          * @param ParserOutput object &$parserOutput
 740          */
 741         public function addParserOutputNoText( &$parserOutput ) {
 742                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 743
 744                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 745                 $this->addCategoryLinks( $parserOutput->getCategories() );
 746                 $this->mNewSectionLink = $parserOutput->getNewSection();
 747                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 748
 749                 if( is_null( $wgExemptFromUserRobotsControl ) ) {
 750                         $bannedNamespaces = $wgContentNamespaces;
 751                 } else {
 752                         $bannedNamespaces = $wgExemptFromUserRobotsControl;
 753                 }
 754                 if( !in_array( $this->getTitle()->getNamespace(), $bannedNamespaces ) ) {
 755                         # FIXME (bug 14900): This overrides $wgArticleRobotPolicies, and it
 756                         # shouldn't
 757                         $this->setIndexPolicy( $parserOutput->getIndexPolicy() );
 758                 }
 759
 760                 $this->mParseWarnings = $parserOutput->getWarnings();
 761                 if ( $parserOutput->getCacheTime() == -1 ) {
 762                         $this->enableClientCache( false );
 763                 }
 764                 $this->mNoGallery = $parserOutput->getNoGallery();
 765                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 766                 // Versioning...
 767                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 768                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 769                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 770                         } else {
 771                                 $this->mTemplateIds[$ns] = $dbks;
 772                         }
 773                 }
 774                 // Page title
 775                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 776                         $this->setPageTitle( $dt );
 777                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 778                         $this->setPageTitle( $title );
 779
 780                 // Hooks registered in the object
 781                 global $wgParserOutputHooks;
 782                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 783                         list( $hookName, $data ) = $hookInfo;
 784                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 785                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 786                         }
 787                 }
 788
 789                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 790         }
 791
 792         /**
 793          * @todo document
 794          * @param ParserOutput &$parserOutput
 795          */
 796         function addParserOutput( &$parserOutput ) {
 797                 $this->addParserOutputNoText( $parserOutput );
 798                 $text = $parserOutput->getText();
 799                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 800                 $this->addHTML( $text );
 801         }
 802
 803         /**
 804          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 805          * Saves the text into the parser cache if possible.
 806          *
 807          * @param string  $text
 808          * @param Article $article
 809          * @param bool    $cache
 810          * @deprecated Use Article::outputWikitext
 811          */
 812         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 813                 global $wgParser;
 814
 815                 wfDeprecated( __METHOD__ );
 816
 817                 $popts = $this->parserOptions();
 818                 $popts->setTidy(true);
 819                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 820                         $popts, true, true, $this->mRevisionId );
 821                 $popts->setTidy(false);
 822                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 823                         $parserCache = ParserCache::singleton();
 824                         $parserCache->save( $parserOutput, $article, $popts);
 825                 }
 826
 827                 $this->addParserOutput( $parserOutput );
 828         }
 829
 830         /**
 831          * @deprecated use addWikiTextTidy()
 832          */
 833         public function addSecondaryWikiText( $text, $linestart = true ) {
 834                 wfDeprecated( __METHOD__ );
 835                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 836         }
 837
 838         /**
 839          * Add wikitext with tidy enabled
 840          */
 841         public function addWikiTextTidy(  $text, $linestart = true ) {
 842                 $title = $this->getTitle();
 843                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 844         }
 845
 846
 847         /**
 848          * Add the output of a QuickTemplate to the output buffer
 849          *
 850          * @param QuickTemplate $template
 851          */
 852         public function addTemplate( &$template ) {
 853                 ob_start();
 854                 $template->execute();
 855                 $this->addHTML( ob_get_contents() );
 856                 ob_end_clean();
 857         }
 858
 859         /**
 860          * Parse wikitext and return the HTML.
 861          *
 862          * @param string $text
 863          * @param bool   $linestart Is this the start of a line?
 864          * @param bool   $interface ??
 865          */
 866         public function parse( $text, $linestart = true, $interface = false ) {
 867                 global $wgParser;
 868                 if( is_null( $this->getTitle() ) ) {
 869                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 870                 }
 871                 $popts = $this->parserOptions();
 872                 if ( $interface) { $popts->setInterfaceMessage(true); }
 873                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 874                         $linestart, true, $this->mRevisionId );
 875                 if ( $interface) { $popts->setInterfaceMessage(false); }
 876                 return $parserOutput->getText();
 877         }
 878
 879         /** Parse wikitext, strip paragraphs, and return the HTML. */
 880         public function parseInline( $text, $linestart = true, $interface = false ) {
 881                 $parsed = $this->parse( $text, $linestart, $interface );
 882
 883                 $m = array();
 884                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 885                         $parsed = $m[1];
 886                 }
 887
 888                 return $parsed;
 889         }
 890
 891         /**
 892          * @param Article $article
 893          * @param User    $user
 894          *
 895          * @deprecated
 896          *
 897          * @return bool True if successful, else false.
 898          */
 899         public function tryParserCache( &$article ) {
 900                 wfDeprecated( __METHOD__ );
 901                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 902
 903                 if ($parserOutput !== false) {
 904                         $this->addParserOutput( $parserOutput );
 905                         return true;
 906                 } else {
 907                         return false;
 908                 }
 909         }
 910
 911         /**
 912          * @param int $maxage Maximum cache time on the Squid, in seconds.
 913          */
 914         public function setSquidMaxage( $maxage ) {
 915                 $this->mSquidMaxage = $maxage;
 916         }
 917
 918         /**
 919          * Use enableClientCache(false) to force it to send nocache headers
 920          * @param $state ??
 921          */
 922         public function enableClientCache( $state ) {
 923                 return wfSetVar( $this->mEnableClientCache, $state );
 924         }
 925
 926         function getCacheVaryCookies() {
 927                 global $wgCookiePrefix, $wgCacheVaryCookies;
 928                 static $cookies;
 929                 if ( $cookies === null ) {
 930                         $cookies = array_merge(
 931                                 array(
 932                                         "{$wgCookiePrefix}Token",
 933                                         "{$wgCookiePrefix}LoggedOut",
 934                                         session_name()
 935                                 ),
 936                                 $wgCacheVaryCookies
 937                         );
 938                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 939                 }
 940                 return $cookies;
 941         }
 942
 943         function uncacheableBecauseRequestVars() {
 944                 global $wgRequest;
 945                 return  $wgRequest->getText('useskin', false) === false
 946                         && $wgRequest->getText('uselang', false) === false;
 947         }
 948
 949         /**
 950          * Check if the request has a cache-varying cookie header
 951          * If it does, it's very important that we don't allow public caching
 952          */
 953         function haveCacheVaryCookies() {
 954                 global $wgRequest;
 955                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 956                 if ( $cookieHeader === false ) {
 957                         return false;
 958                 }
 959                 $cvCookies = $this->getCacheVaryCookies();
 960                 foreach ( $cvCookies as $cookieName ) {
 961                         # Check for a simple string match, like the way squid does it
 962                         if ( strpos( $cookieHeader, $cookieName ) ) {
 963                                 wfDebug( __METHOD__.": found $cookieName\n" );
 964                                 return true;
 965                         }
 966                 }
 967                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 968                 return false;
 969         }
 970
 971         /** Get a complete X-Vary-Options header */
 972         public function getXVO() {
 973                 $cvCookies = $this->getCacheVaryCookies();
 974                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
 975                 $first = true;
 976                 foreach ( $cvCookies as $cookieName ) {
 977                         if ( $first ) {
 978                                 $first = false;
 979                         } else {
 980                                 $xvo .= ';';
 981                         }
 982                         $xvo .= 'string-contains=' . $cookieName;
 983                 }
 984                 return $xvo;
 985         }
 986
 987         public function sendCacheControl() {
 988                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
 989
 990                 $response = $wgRequest->response();
 991                 if ($wgUseETag && $this->mETag)
 992                         $response->header("ETag: $this->mETag");
 993
 994                 # don't serve compressed data to clients who can't handle it
 995                 # maintain different caches for logged-in users and non-logged in ones
 996                 $response->header( 'Vary: Accept-Encoding, Cookie' );
 997
 998                 if ( $wgUseXVO ) {
 999                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1000                         $response->header( $this->getXVO() );
1001                 }
1002
1003                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1004                         if( $wgUseSquid && session_id() == '' &&
1005                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1006                         {
1007                                 if ( $wgUseESI ) {
1008                                         # We'll purge the proxy cache explicitly, but require end user agents
1009                                         # to revalidate against the proxy on each visit.
1010                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1011                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1012                                         # start with a shorter timeout for initial testing
1013                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1014                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1015                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1016                                 } else {
1017                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1018                                         # to revalidate against the proxy on each visit.
1019                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1020                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1021                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1022                                         # start with a shorter timeout for initial testing
1023                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1024                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1025                                 }
1026                         } else {
1027                                 # We do want clients to cache if they can, but they *must* check for updates
1028                                 # on revisiting the page.
1029                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1030                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1031                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1032                         }
1033                         if($this->mLastModified) {
1034                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1035                         }
1036                 } else {
1037                         wfDebug( __METHOD__ . ": no caching **\n", false );
1038
1039                         # In general, the absence of a last modified header should be enough to prevent
1040                         # the client from using its cache. We send a few other things just to make sure.
1041                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1042                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1043                         $response->header( 'Pragma: no-cache' );
1044                 }
1045         }
1046
1047         /**
1048          * Finally, all the text has been munged and accumulated into
1049          * the object, let's actually output it:
1050          */
1051         public function output() {
1052                 global $wgUser, $wgOutputEncoding, $wgRequest;
1053                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1054                 global $wgJsMimeType, $wgUseAjax, $wgAjaxWatch;
1055                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1056                 global $wgArticle;
1057
1058                 if( $this->mDoNothing ){
1059                         return;
1060                 }
1061                 wfProfileIn( __METHOD__ );
1062                 if ( '' != $this->mRedirect ) {
1063                         # Standards require redirect URLs to be absolute
1064                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1065                         if( $this->mRedirectCode == '301') {
1066                                 if( !$wgDebugRedirects ) {
1067                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1068                                 }
1069                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1070                         }
1071                         $this->sendCacheControl();
1072
1073                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1074                         if( $wgDebugRedirects ) {
1075                                 $url = htmlspecialchars( $this->mRedirect );
1076                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1077                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1078                                 print "</body>\n</html>\n";
1079                         } else {
1080                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1081                         }
1082                         wfProfileOut( __METHOD__ );
1083                         return;
1084                 }
1085                 elseif ( $this->mStatusCode )
1086                 {
1087                         $statusMessage = array(
1088                                 100 => 'Continue',
1089                                 101 => 'Switching Protocols',
1090                                 102 => 'Processing',
1091                                 200 => 'OK',
1092                                 201 => 'Created',
1093                                 202 => 'Accepted',
1094                                 203 => 'Non-Authoritative Information',
1095                                 204 => 'No Content',
1096                                 205 => 'Reset Content',
1097                                 206 => 'Partial Content',
1098                                 207 => 'Multi-Status',
1099                                 300 => 'Multiple Choices',
1100                                 301 => 'Moved Permanently',
1101                                 302 => 'Found',
1102                                 303 => 'See Other',
1103                                 304 => 'Not Modified',
1104                                 305 => 'Use Proxy',
1105                                 307 => 'Temporary Redirect',
1106                                 400 => 'Bad Request',
1107                                 401 => 'Unauthorized',
1108                                 402 => 'Payment Required',
1109                                 403 => 'Forbidden',
1110                                 404 => 'Not Found',
1111                                 405 => 'Method Not Allowed',
1112                                 406 => 'Not Acceptable',
1113                                 407 => 'Proxy Authentication Required',
1114                                 408 => 'Request Timeout',
1115                                 409 => 'Conflict',
1116                                 410 => 'Gone',
1117                                 411 => 'Length Required',
1118                                 412 => 'Precondition Failed',
1119                                 413 => 'Request Entity Too Large',
1120                                 414 => 'Request-URI Too Large',
1121                                 415 => 'Unsupported Media Type',
1122                                 416 => 'Request Range Not Satisfiable',
1123                                 417 => 'Expectation Failed',
1124                                 422 => 'Unprocessable Entity',
1125                                 423 => 'Locked',
1126                                 424 => 'Failed Dependency',
1127                                 500 => 'Internal Server Error',
1128                                 501 => 'Not Implemented',
1129                                 502 => 'Bad Gateway',
1130                                 503 => 'Service Unavailable',
1131                                 504 => 'Gateway Timeout',
1132                                 505 => 'HTTP Version Not Supported',
1133                                 507 => 'Insufficient Storage'
1134                         );
1135
1136                         if ( $statusMessage[$this->mStatusCode] )
1137                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1138                 }
1139
1140                 $sk = $wgUser->getSkin();
1141
1142                 // add our core scripts to output
1143                 $this->addCoreScripts2Top();
1144
1145                 if ( $wgUseAjax ) {
1146                         $this->addScriptFile( 'ajax.js' );
1147
1148                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1149
1150                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1151                                 $this->addScriptFile( 'ajaxwatch.js' );
1152                         }
1153
1154                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1155                                 $this->addScriptFile( 'mwsuggest.js' );
1156                         }
1157                 }
1158
1159                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1160                         $this->addScriptFile( 'rightclickedit.js' );
1161                 }
1162
1163                 if( $wgUniversalEditButton ) {
1164                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1165                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1166                                 // Original UniversalEditButton
1167                                 $this->addLink( array(
1168                                         'rel' => 'alternate',
1169                                         'type' => 'application/x-wiki',
1170                                         'title' => wfMsg( 'edit' ),
1171                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1172                                 ) );
1173                                 // Alternate edit link
1174                                 $this->addLink( array(
1175                                         'rel' => 'edit',
1176                                         'title' => wfMsg( 'edit' ),
1177                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1178                                 ) );
1179                         }
1180                 }
1181
1182                 # Buffer output; final headers may depend on later processing
1183                 ob_start();
1184
1185                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1186                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1187
1188                 if ($this->mArticleBodyOnly) {
1189                         $this->out($this->mBodytext);
1190                 } else {
1191                         // Hook that allows last minute changes to the output page, e.g.
1192                         // adding of CSS or Javascript by extensions.
1193                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1194
1195                         wfProfileIn( 'Output-skin' );
1196                         $sk->outputPage( $this );
1197                         wfProfileOut( 'Output-skin' );
1198                 }
1199
1200                 $this->sendCacheControl();
1201                 ob_end_flush();
1202                 wfProfileOut( __METHOD__ );
1203         }
1204
1205         /**
1206          * Actually output something with print(). Performs an iconv to the
1207          * output encoding, if needed.
1208          * @param string $ins The string to output
1209          */
1210         public function out( $ins ) {
1211                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1212                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1213                         $outs = $ins;
1214                 } else {
1215                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1216                         if ( false === $outs ) { $outs = $ins; }
1217                 }
1218                 print $outs;
1219         }
1220
1221         /**
1222          * @todo document
1223          */
1224         public static function setEncodings() {
1225                 global $wgInputEncoding, $wgOutputEncoding;
1226                 global $wgContLang;
1227
1228                 $wgInputEncoding = strtolower( $wgInputEncoding );
1229
1230                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1231                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1232                         return;
1233                 }
1234                 $wgOutputEncoding = $wgInputEncoding;
1235         }
1236
1237         /**
1238          * Deprecated, use wfReportTime() instead.
1239          * @return string
1240          * @deprecated
1241          */
1242         public function reportTime() {
1243                 wfDeprecated( __METHOD__ );
1244                 $time = wfReportTime();
1245                 return $time;
1246         }
1247
1248         /**
1249          * Produce a "user is blocked" page.
1250          *
1251          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1252          * @return nothing
1253          */
1254         function blockedPage( $return = true ) {
1255                 global $wgUser, $wgContLang, $wgLang;
1256
1257                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1258                 $this->setRobotPolicy( 'noindex,nofollow' );
1259                 $this->setArticleRelated( false );
1260
1261                 $name = User::whoIs( $wgUser->blockedBy() );
1262                 $reason = $wgUser->blockedFor();
1263                 if( $reason == '' ) {
1264                         $reason = wfMsg( 'blockednoreason' );
1265                 }
1266                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1267                 $ip = wfGetIP();
1268
1269                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1270
1271                 $blockid = $wgUser->mBlock->mId;
1272
1273                 $blockExpiry = $wgUser->mBlock->mExpiry;
1274                 if ( $blockExpiry == 'infinity' ) {
1275                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1276                         // Search for localization in 'ipboptions'
1277                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1278                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1279                                 if ( strpos( $option, ":" ) === false )
1280                                         continue;
1281                                 list( $show, $value ) = explode( ":", $option );
1282                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1283                                         $blockExpiry = $show;
1284                                         break;
1285                                 }
1286                         }
1287                 } else {
1288                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1289                 }
1290
1291                 if ( $wgUser->mBlock->mAuto ) {
1292                         $msg = 'autoblockedtext';
1293                 } else {
1294                         $msg = 'blockedtext';
1295                 }
1296
1297                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1298                  * This could be a username, an ip range, or a single ip. */
1299                 $intended = $wgUser->mBlock->mAddress;
1300
1301                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1302
1303                 # Don't auto-return to special pages
1304                 if( $return ) {
1305                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1306                         $this->returnToMain( null, $return );
1307                 }
1308         }
1309
1310         /**
1311          * Output a standard error page
1312          *
1313          * @param string $title Message key for page title
1314          * @param string $msg Message key for page text
1315          * @param array $params Message parameters
1316          */
1317         public function showErrorPage( $title, $msg, $params = array() ) {
1318                 if ( $this->getTitle() ) {
1319                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1320                 }
1321                 $this->setPageTitle( wfMsg( $title ) );
1322                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1323                 $this->setRobotPolicy( 'noindex,nofollow' );
1324                 $this->setArticleRelated( false );
1325                 $this->enableClientCache( false );
1326                 $this->mRedirect = '';
1327                 $this->mBodytext = '';
1328
1329                 array_unshift( $params, 'parse' );
1330                 array_unshift( $params, $msg );
1331                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1332
1333                 $this->returnToMain();
1334         }
1335
1336         /**
1337          * Output a standard permission error page
1338          *
1339          * @param array $errors Error message keys
1340          */
1341         public function showPermissionsErrorPage( $errors, $action = null )
1342         {
1343                 $this->mDebugtext .= 'Original title: ' .
1344                 $this->getTitle()->getPrefixedText() . "\n";
1345                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1346                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1347                 $this->setRobotPolicy( 'noindex,nofollow' );
1348                 $this->setArticleRelated( false );
1349                 $this->enableClientCache( false );
1350                 $this->mRedirect = '';
1351                 $this->mBodytext = '';
1352                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1353         }
1354
1355         /** @deprecated */
1356         public function errorpage( $title, $msg ) {
1357                 wfDeprecated( __METHOD__ );
1358                 throw new ErrorPageError( $title, $msg );
1359         }
1360
1361         /**
1362          * Display an error page indicating that a given version of MediaWiki is
1363          * required to use it
1364          *
1365          * @param mixed $version The version of MediaWiki needed to use the page
1366          */
1367         public function versionRequired( $version ) {
1368                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1369                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1370                 $this->setRobotPolicy( 'noindex,nofollow' );
1371                 $this->setArticleRelated( false );
1372                 $this->mBodytext = '';
1373
1374                 $this->addWikiMsg( 'versionrequiredtext', $version );
1375                 $this->returnToMain();
1376         }
1377
1378         /**
1379          * Display an error page noting that a given permission bit is required.
1380          *
1381          * @param string $permission key required
1382          */
1383         public function permissionRequired( $permission ) {
1384                 global $wgLang;
1385
1386                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1387                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1388                 $this->setRobotPolicy( 'noindex,nofollow' );
1389                 $this->setArticleRelated( false );
1390                 $this->mBodytext = '';
1391
1392                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1393                         User::getGroupsWithPermission( $permission ) );
1394                 if( $groups ) {
1395                         $this->addWikiMsg( 'badaccess-groups',
1396                                 $wgLang->commaList( $groups ),
1397                                 count( $groups) );
1398                 } else {
1399                         $this->addWikiMsg( 'badaccess-group0' );
1400                 }
1401                 $this->returnToMain();
1402         }
1403
1404         /**
1405          * Use permissionRequired.
1406          * @deprecated
1407          */
1408         public function sysopRequired() {
1409                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1410         }
1411
1412         /**
1413          * Use permissionRequired.
1414          * @deprecated
1415          */
1416         public function developerRequired() {
1417                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1418         }
1419
1420         /**
1421          * Produce the stock "please login to use the wiki" page
1422          */
1423         public function loginToUse() {
1424                 global $wgUser, $wgContLang;
1425
1426                 if( $wgUser->isLoggedIn() ) {
1427                         $this->permissionRequired( 'read' );
1428                         return;
1429                 }
1430
1431                 $skin = $wgUser->getSkin();
1432
1433                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1434                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1435                 $this->setRobotPolicy( 'noindex,nofollow' );
1436                 $this->setArticleFlag( false );
1437
1438                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1439                 $loginLink = $skin->link(
1440                         $loginTitle,
1441                         wfMsgHtml( 'loginreqlink' ),
1442                         array(),
1443                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1444                         array( 'known', 'noclasses' )
1445                 );
1446                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1447                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1448
1449                 # Don't return to the main page if the user can't read it
1450                 # otherwise we'll end up in a pointless loop
1451                 $mainPage = Title::newMainPage();
1452                 if( $mainPage->userCanRead() )
1453                         $this->returnToMain( null, $mainPage );
1454         }
1455
1456         /** @deprecated */
1457         public function databaseError( $fname, $sql, $error, $errno ) {
1458                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1459         }
1460
1461         /**
1462          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1463          * @return string The wikitext error-messages, formatted into a list.
1464          */
1465         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1466                 if ($action == null) {
1467                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1468                 } else {
1469                         global $wgLang;
1470                         $action_desc = wfMsgNoTrans( "action-$action" );
1471                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1472                 }
1473
1474                 if (count( $errors ) > 1) {
1475                         $text .= '<ul class="permissions-errors">' . "\n";
1476
1477                         foreach( $errors as $error )
1478                         {
1479                                 $text .= '<li>';
1480                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1481                                 $text .= "</li>\n";
1482                         }
1483                         $text .= '</ul>';
1484                 } else {
1485                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1486                 }
1487
1488                 return $text;
1489         }
1490
1491         /**
1492          * Display a page stating that the Wiki is in read-only mode,
1493          * and optionally show the source of the page that the user
1494          * was trying to edit.  Should only be called (for this
1495          * purpose) after wfReadOnly() has returned true.
1496          *
1497          * For historical reasons, this function is _also_ used to
1498          * show the error message when a user tries to edit a page
1499          * they are not allowed to edit.  (Unless it's because they're
1500          * blocked, then we show blockedPage() instead.)  In this
1501          * case, the second parameter should be set to true and a list
1502          * of reasons supplied as the third parameter.
1503          *
1504          * @todo Needs to be split into multiple functions.
1505          *
1506          * @param string $source    Source code to show (or null).
1507          * @param bool   $protected Is this a permissions error?
1508          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1509          */
1510         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1511                 global $wgUser;
1512                 $skin = $wgUser->getSkin();
1513
1514                 $this->setRobotPolicy( 'noindex,nofollow' );
1515                 $this->setArticleRelated( false );
1516
1517                 // If no reason is given, just supply a default "I can't let you do
1518                 // that, Dave" message.  Should only occur if called by legacy code.
1519                 if ( $protected && empty($reasons) ) {
1520                         $reasons[] = array( 'badaccess-group0' );
1521                 }
1522
1523                 if ( !empty($reasons) ) {
1524                         // Permissions error
1525                         if( $source ) {
1526                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1527                                 $this->setSubtitle(
1528                                         wfMsg(
1529                                                 'viewsourcefor',
1530                                                 $skin->link(
1531                                                         $this->getTitle(),
1532                                                         null,
1533                                                         array(),
1534                                                         array(),
1535                                                         array( 'known', 'noclasses' )
1536                                                 )
1537                                         )
1538                                 );
1539                         } else {
1540                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1541                         }
1542                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1543                 } else {
1544                         // Wiki is read only
1545                         $this->setPageTitle( wfMsg( 'readonly' ) );
1546                         $reason = wfReadOnlyReason();
1547                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1548                 }
1549
1550                 // Show source, if supplied
1551                 if( is_string( $source ) ) {
1552                         $this->addWikiMsg( 'viewsourcetext' );
1553                         $text = Xml::openElement( 'textarea',
1554                                                 array( 'id'   => 'wpTextbox1',
1555                                                        'name' => 'wpTextbox1',
1556                                                        'cols' => $wgUser->getOption( 'cols' ),
1557                                                        'rows' => $wgUser->getOption( 'rows' ),
1558                                                        'readonly' => 'readonly' ) );
1559                         $text .= htmlspecialchars( $source );
1560                         $text .= Xml::closeElement( 'textarea' );
1561                         $this->addHTML( $text );
1562
1563                         // Show templates used by this article
1564                         $skin = $wgUser->getSkin();
1565                         $article = new Article( $this->getTitle() );
1566                         $this->addHTML( "<div class='templatesUsed'>
1567 {$skin->formatTemplates( $article->getUsedTemplates() )}
1568 </div>
1569 " );
1570                 }
1571
1572                 # If the title doesn't exist, it's fairly pointless to print a return
1573                 # link to it.  After all, you just tried editing it and couldn't, so
1574                 # what's there to do there?
1575                 if( $this->getTitle()->exists() ) {
1576                         $this->returnToMain( null, $this->getTitle() );
1577                 }
1578         }
1579
1580         /** @deprecated */
1581         public function fatalError( $message ) {
1582                 wfDeprecated( __METHOD__ );
1583                 throw new FatalError( $message );
1584         }
1585
1586         /** @deprecated */
1587         public function unexpectedValueError( $name, $val ) {
1588                 wfDeprecated( __METHOD__ );
1589                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1590         }
1591
1592         /** @deprecated */
1593         public function fileCopyError( $old, $new ) {
1594                 wfDeprecated( __METHOD__ );
1595                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1596         }
1597
1598         /** @deprecated */
1599         public function fileRenameError( $old, $new ) {
1600                 wfDeprecated( __METHOD__ );
1601                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1602         }
1603
1604         /** @deprecated */
1605         public function fileDeleteError( $name ) {
1606                 wfDeprecated( __METHOD__ );
1607                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1608         }
1609
1610         /** @deprecated */
1611         public function fileNotFoundError( $name ) {
1612                 wfDeprecated( __METHOD__ );
1613                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1614         }
1615
1616         public function showFatalError( $message ) {
1617                 $this->setPageTitle( wfMsg( "internalerror" ) );
1618                 $this->setRobotPolicy( "noindex,nofollow" );
1619                 $this->setArticleRelated( false );
1620                 $this->enableClientCache( false );
1621                 $this->mRedirect = '';
1622                 $this->mBodytext = $message;
1623         }
1624
1625         public function showUnexpectedValueError( $name, $val ) {
1626                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1627         }
1628
1629         public function showFileCopyError( $old, $new ) {
1630                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1631         }
1632
1633         public function showFileRenameError( $old, $new ) {
1634                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1635         }
1636
1637         public function showFileDeleteError( $name ) {
1638                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1639         }
1640
1641         public function showFileNotFoundError( $name ) {
1642                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1643         }
1644
1645         /**
1646          * Add a "return to" link pointing to a specified title
1647          *
1648          * @param Title $title Title to link
1649          * @param string $query Query string
1650          */
1651         public function addReturnTo( $title, $query = array() ) {
1652                 global $wgUser;
1653                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1654                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1655                         $title, null, array(), $query ) );
1656                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1657         }
1658
1659         /**
1660          * Add a "return to" link pointing to a specified title,
1661          * or the title indicated in the request, or else the main page
1662          *
1663          * @param null $unused No longer used
1664          * @param Title $returnto Title to return to
1665          */
1666         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1667                 global $wgRequest;
1668
1669                 if ( $returnto == null ) {
1670                         $returnto = $wgRequest->getText( 'returnto' );
1671                 }
1672
1673                 if ( $returntoquery == null ) {
1674                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1675                 }
1676
1677                 if ( '' === $returnto ) {
1678                         $returnto = Title::newMainPage();
1679                 }
1680
1681                 if ( is_object( $returnto ) ) {
1682                         $titleObj = $returnto;
1683                 } else {
1684                         $titleObj = Title::newFromText( $returnto );
1685                 }
1686                 if ( !is_object( $titleObj ) ) {
1687                         $titleObj = Title::newMainPage();
1688                 }
1689
1690                 $this->addReturnTo( $titleObj, $returntoquery );
1691         }
1692
1693         /**
1694          * @return string The doctype, opening <html>, and head element.
1695          */
1696         public function headElement( Skin $sk ) {
1697                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1698                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1699                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1700
1701                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1702                 if ( $sk->commonPrintStylesheet() ) {
1703                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1704                 }
1705                 $sk->setupUserCss( $this );
1706
1707                 $ret = '';
1708
1709                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1710                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1711                 }
1712
1713                 if ( '' == $this->getHTMLTitle() ) {
1714                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1715                 }
1716
1717                 $dir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
1718
1719                 if ( $wgHtml5 ) {
1720                         $ret .= "<!doctype html>\n";
1721                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1722                 } else {
1723                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1724                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1725                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1726                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1727                         }
1728                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1729                 }
1730
1731                 $ret .= "<head>\n\t<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n\t";
1732                 $ret .= implode( "\n", array(
1733                         $this->getHeadLinks(),
1734                         $this->buildCssLinks(),
1735                         $sk->getHeadScripts( $this ),
1736                         $this->getHeadItems(),
1737                 ));
1738                 if( $sk->usercss ){
1739                         $ret .= "<style type='text/css'>{$sk->usercss}</style>";
1740                 }
1741
1742                 if( $wgEnableScriptLoader )
1743                         $ret .= $this->getScriptLoaderJs();
1744
1745                 if ($wgUseTrackbacks && $this->isArticleRelated())
1746                         $ret .= $this->getTitle()->trackbackRDF();
1747
1748                 $ret .= "</head>\n";
1749                 return $ret;
1750         }
1751
1752         protected function addDefaultMeta() {
1753                 global $wgVersion, $wgHtml5;
1754
1755                 static $called = false;
1756                 if ( $called ) {
1757                         # Don't run this twice
1758                         return;
1759                 }
1760                 $called = true;
1761
1762                 if ( !$wgHtml5 ) {
1763                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1764                 }
1765                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1766
1767                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1768                 if( $p !== 'index,follow' ) {
1769                         // http://www.robotstxt.org/wc/meta-user.html
1770                         // Only show if it's different from the default robots policy
1771                         $this->addMeta( 'robots', $p );
1772                 }
1773
1774                 if ( count( $this->mKeywords ) > 0 ) {
1775                         $strip = array(
1776                                 "/<.*?" . ">/" => '',
1777                                 "/_/" => ' '
1778                         );
1779                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1780                 }
1781         }
1782
1783         /**
1784          * @return string HTML tag links to be put in the header.
1785          */
1786         public function getHeadLinks() {
1787                 global $wgRequest, $wgFeed;
1788
1789                 // Ideally this should happen earlier, somewhere. :P
1790                 $this->addDefaultMeta();
1791
1792                 $tags = array();
1793
1794                 foreach ( $this->mMetatags as $tag ) {
1795                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1796                                 $a = 'http-equiv';
1797                                 $tag[0] = substr( $tag[0], 5 );
1798                         } else {
1799                                 $a = 'name';
1800                         }
1801                         $tags[] = Xml::element( 'meta',
1802                                 array(
1803                                         $a => $tag[0],
1804                                         'content' => $tag[1] ) );
1805                 }
1806                 foreach ( $this->mLinktags as $tag ) {
1807                         $tags[] = Xml::element( 'link', $tag );
1808                 }
1809
1810                 if( $wgFeed ) {
1811                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1812                                 # Use the page name for the title (accessed through $wgTitle since
1813                                 # there's no other way).  In principle, this could lead to issues
1814                                 # with having the same name for different feeds corresponding to
1815                                 # the same page, but we can't avoid that at this low a level.
1816
1817                                 $tags[] = $this->feedLink(
1818                                         $format,
1819                                         $link,
1820                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1821                         }
1822
1823                         # Recent changes feed should appear on every page (except recentchanges,
1824                         # that would be redundant). Put it after the per-page feed to avoid
1825                         # changing existing behavior. It's still available, probably via a
1826                         # menu in your browser. Some sites might have a different feed they'd
1827                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1828                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1829                         # If so, use it instead.
1830
1831                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1832                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1833
1834                         if ( $wgOverrideSiteFeed ) {
1835                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1836                                         $tags[] = $this->feedLink (
1837                                                 $type,
1838                                                 htmlspecialchars( $feedUrl ),
1839                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1840                                 }
1841                         }
1842                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1843                                 foreach( $wgFeedClasses as $format => $class ) {
1844                                         $tags[] = $this->feedLink(
1845                                                 $format,
1846                                                 $rctitle->getLocalURL( "feed={$format}" ),
1847                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1848                                 }
1849                         }
1850                 }
1851
1852                 return implode( "\n\t", $tags ) . "\n";
1853         }
1854
1855         /**
1856          * Return URLs for each supported syndication format for this page.
1857          * @return array associating format keys with URLs
1858          */
1859         public function getSyndicationLinks() {
1860                 global $wgFeedClasses;
1861                 $links = array();
1862
1863                 if( $this->isSyndicated() ) {
1864                         if( is_string( $this->getFeedAppendQuery() ) ) {
1865                                 $appendQuery = "&" . $this->getFeedAppendQuery();
1866                         } else {
1867                                 $appendQuery = "";
1868                         }
1869
1870                         foreach( $wgFeedClasses as $format => $class ) {
1871                                 $links[$format] = $this->getTitle()->getLocalUrl( "feed=$format{$appendQuery}" );
1872                         }
1873                 }
1874                 return $links;
1875         }
1876
1877         /**
1878          * Generate a <link rel/> for an RSS feed.
1879          */
1880         private function feedLink( $type, $url, $text ) {
1881                 return Xml::element( 'link', array(
1882                         'rel' => 'alternate',
1883                         'type' => "application/$type+xml",
1884                         'title' => $text,
1885                         'href' => $url ) );
1886         }
1887
1888         /**
1889          * Add a local or specified stylesheet, with the given media options.
1890          * Meant primarily for internal use...
1891          *
1892          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1893          * @param $conditional -- for IE conditional comments, specifying an IE version
1894          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1895          */
1896         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1897                 $options = array();
1898                 // In Opera, fullscreen mode is treated as projection mode, and it causes
1899                 // styles set for screen to not be loaded - thus breaking the page -  so
1900                 // we can just append projection to the media attribute when it's screen
1901                 // so the browser is happy and - with no side-effects on other browsers.
1902                 // Also - even though we expect the media type to be lowercase, but here
1903                 // we force it to lowercase to be safe.
1904                 if ( strtolower( $media ) == 'screen' )
1905                         $media .= ',projection';
1906                 if( $media )
1907                         $options['media'] = $media;
1908                 if( $condition )
1909                         $options['condition'] = $condition;
1910                 if( $dir )
1911                         $options['dir'] = $dir;
1912                 $this->styles[$style] = $options;
1913         }
1914
1915         /**
1916          * Adds inline CSS styles
1917          * @param $style_css Mixed: inline CSS
1918          */
1919         public function addInlineStyle( $style_css ){
1920                 $this->mScripts .= "<style type=\"text/css\">$style_css</style>";
1921         }
1922
1923         /**
1924          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1925          * These will be applied to various media & IE conditionals.
1926          */
1927         public function buildCssLinks() {
1928                 $links = array();
1929                 foreach( $this->styles as $file => $options ) {
1930                         $link = $this->styleLink( $file, $options );
1931                         if( $link )
1932                                 $links[] = $link;
1933                 }
1934
1935                 return "\t" . implode( "\n\t", $links );
1936         }
1937
1938         /**
1939          * Return a <link rel="stylesheet"> with the given parameters.
1940          *
1941          * @param $style string Relative or absolute URL.  If $style begins with
1942          *   '/', 'http:', or 'https:' it's used for the href as-is.  Otherwise,
1943          *   it's assumed to refer to some file within $wgStylePath, so the URL
1944          *   used is "$wgStylePath/$style?$wgStyleVersion".
1945          * @param $options array Associative array with the following possible
1946          *   keys:
1947          *     'dir': 'rtl' or 'ltr'.  If the site language direction doesn't match
1948          *       this, the empty string is returned.
1949          *     'media': Contents of the media attribute (will be mangled a bit,
1950          *       e.g. 'screen' -> 'screen,projection' so Opera fullscreen works)
1951          *     'condition': Wrap in an IE conditional comment, e.g., 'lt IE 7'.
1952          * @return string Raw HTML
1953          */
1954         protected function styleLink( $style, $options ) {
1955                 global $wgRequest, $wgHtml5;
1956
1957                 if( isset( $options['dir'] ) ) {
1958                         global $wgContLang;
1959                         $siteDir = $wgContLang->isRTL() ? 'rtl' : 'ltr';
1960                         if( $siteDir != $options['dir'] )
1961                                 return '';
1962                 }
1963
1964                 if( isset( $options['media'] ) ) {
1965                         $media = $this->transformCssMedia( $options['media'] );
1966                         if( is_null( $media ) ) {
1967                                 return '';
1968                         }
1969                 } else {
1970                         $media = '';
1971                 }
1972
1973                 if( substr( $style, 0, 1 ) == '/' ||
1974                         substr( $style, 0, 5 ) == 'http:' ||
1975                         substr( $style, 0, 6 ) == 'https:' ) {
1976                         $url = $style;
1977                 } else {
1978                         global $wgStylePath, $wgStyleVersion;
1979                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
1980                 }
1981
1982                 $attribs = array(
1983                         'rel' => 'stylesheet',
1984                         'href' => $url );
1985                 if ( !$wgHtml5 ) {
1986                         $attribs['type'] = 'text/css';
1987                 }
1988                 if ( $media ) {
1989                         $attribs['media'] = $media;
1990                 }
1991
1992                 $link = Xml::element( 'link', $attribs );
1993
1994                 if( isset( $options['condition'] ) ) {
1995                         $condition = htmlspecialchars( $options['condition'] );
1996                         $link = "<!--[if $condition]>$link<![endif]-->";
1997                 }
1998                 return $link;
1999         }
2000
2001         function transformCssMedia( $media ) {
2002                 global $wgRequest, $wgHandheldForIPhone;
2003
2004                 // Switch in on-screen display for media testing
2005                 $switches = array(
2006                         'printable' => 'print',
2007                         'handheld' => 'handheld',
2008                 );
2009                 foreach( $switches as $switch => $targetMedia ) {
2010                         if( $wgRequest->getBool( $switch ) ) {
2011                                 if( $media == $targetMedia ) {
2012                                         $media = '';
2013                                 } elseif( $media == 'screen' ) {
2014                                         return null;
2015                                 }
2016                         }
2017                 }
2018
2019                 // Expand longer media queries as iPhone doesn't grok 'handheld'
2020                 if( $wgHandheldForIPhone ) {
2021                         $mediaAliases = array(
2022                                 'screen' => 'screen and (min-device-width: 481px)',
2023                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
2024                         );
2025
2026                         if( isset( $mediaAliases[$media] ) ) {
2027                                 $media = $mediaAliases[$media];
2028                         }
2029                 }
2030
2031                 return $media;
2032         }
2033
2034         /**
2035          * Turn off regular page output and return an error reponse
2036          * for when rate limiting has triggered.
2037          */
2038         public function rateLimited() {
2039
2040                 $this->setPageTitle(wfMsg('actionthrottled'));
2041                 $this->setRobotPolicy( 'noindex,follow' );
2042                 $this->setArticleRelated( false );
2043                 $this->enableClientCache( false );
2044                 $this->mRedirect = '';
2045                 $this->clearHTML();
2046                 $this->setStatusCode(503);
2047                 $this->addWikiMsg( 'actionthrottledtext' );
2048
2049                 $this->returnToMain( null, $this->getTitle() );
2050         }
2051
2052         /**
2053          * Show an "add new section" link?
2054          *
2055          * @return bool
2056          */
2057         public function showNewSectionLink() {
2058                 return $this->mNewSectionLink;
2059         }
2060
2061         /**
2062         * Forcibly hide the new section link?
2063         *
2064         * @return bool
2065         */
2066         public function forceHideNewSectionLink() {
2067                 return $this->mHideNewSectionLink;
2068         }
2069
2070         /**
2071          * Show a warning about slave lag
2072          *
2073          * If the lag is higher than $wgSlaveLagCritical seconds,
2074          * then the warning is a bit more obvious. If the lag is
2075          * lower than $wgSlaveLagWarning, then no warning is shown.
2076          *
2077          * @param int $lag Slave lag
2078          */
2079         public function showLagWarning( $lag ) {
2080                 global $wgSlaveLagWarning, $wgSlaveLagCritical;
2081                 if( $lag >= $wgSlaveLagWarning ) {
2082                         $message = $lag < $wgSlaveLagCritical
2083                                 ? 'lag-warn-normal'
2084                                 : 'lag-warn-high';
2085                         $warning = wfMsgExt( $message, 'parse', $lag );
2086                         $this->addHTML( "<div class=\"mw-{$message}\">\n{$warning}\n</div>\n" );
2087                 }
2088         }
2089
2090         /**
2091          * Add a wikitext-formatted message to the output.
2092          * This is equivalent to:
2093          *
2094          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2095          */
2096         public function addWikiMsg( /*...*/ ) {
2097                 $args = func_get_args();
2098                 $name = array_shift( $args );
2099                 $this->addWikiMsgArray( $name, $args );
2100         }
2101
2102         /**
2103          * Add a wikitext-formatted message to the output.
2104          * Like addWikiMsg() except the parameters are taken as an array
2105          * instead of a variable argument list.
2106          *
2107          * $options is passed through to wfMsgExt(), see that function for details.
2108          */
2109         public function addWikiMsgArray( $name, $args, $options = array() ) {
2110                 $options[] = 'parse';
2111                 $text = wfMsgExt( $name, $options, $args );
2112                 $this->addHTML( $text );
2113         }
2114
2115         /**
2116          * This function takes a number of message/argument specifications, wraps them in
2117          * some overall structure, and then parses the result and adds it to the output.
2118          *
2119          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2120          * on. The subsequent arguments may either be strings, in which case they are the
2121          * message names, or arrays, in which case the first element is the message name,
2122          * and subsequent elements are the parameters to that message.
2123          *
2124          * The special named parameter 'options' in a message specification array is passed
2125          * through to the $options parameter of wfMsgExt().
2126          *
2127          * Don't use this for messages that are not in users interface language.
2128          *
2129          * For example:
2130          *
2131          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2132          *
2133          * Is equivalent to:
2134          *
2135          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2136          */
2137         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2138                 $msgSpecs = func_get_args();
2139                 array_shift( $msgSpecs );
2140                 $msgSpecs = array_values( $msgSpecs );
2141                 $s = $wrap;
2142                 foreach ( $msgSpecs as $n => $spec ) {
2143                         $options = array();
2144                         if ( is_array( $spec ) ) {
2145                                 $args = $spec;
2146                                 $name = array_shift( $args );
2147                                 if ( isset( $args['options'] ) ) {
2148                                         $options = $args['options'];
2149                                         unset( $args['options'] );
2150                                 }
2151                         }  else {
2152                                 $args = array();
2153                                 $name = $spec;
2154                         }
2155                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2156                 }
2157                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2158         }
2159 }