includes/OutputPage.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4
   5 /**
   6  * @todo document
   7  */
   8 class OutputPage {
   9         var $mMetatags = array(), $mKeywords = array(), $mLinktags = array();
  10         var $mExtStyles = array();
  11         var $mPagetitle = '', $mBodytext = '', $mDebugtext = '';
  12         var $mHTMLtitle = '', $mIsarticle = true, $mPrintable = false;
  13         var $mSubtitle = '', $mRedirect = '', $mStatusCode;
  14         var $mLastModified = '', $mETag = false;
  15         var $mCategoryLinks = array(), $mLanguageLinks = array();
  16
  17         var $mScriptLoaderClassList = array();
  18
  19         var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
  20         var $mInlineMsg = array();
  21
  22         var $mTemplateIds = array();
  23
  24         var $mAllowUserJs;
  25         var $mSuppressQuickbar = false;
  26         var $mOnloadHandler = '';
  27         var $mDoNothing = false;
  28         var $mContainsOldMagic = 0, $mContainsNewMagic = 0;
  29         var $mIsArticleRelated = true;
  30         protected $mParserOptions = null; // lazy initialised, use parserOptions()
  31
  32         var $mFeedLinks = array();
  33
  34         var $mEnableClientCache = true;
  35         var $mArticleBodyOnly = false;
  36
  37         var $mNewSectionLink = false;
  38         var $mHideNewSectionLink = false;
  39         var $mNoGallery = false;
  40         var $mPageTitleActionText = '';
  41         var $mParseWarnings = array();
  42         var $mSquidMaxage = 0;
  43         var $mRevisionId = null;
  44         protected $mTitle = null;
  45
  46         /**
  47          * An array of stylesheet filenames (relative from skins path), with options
  48          * for CSS media, IE conditions, and RTL/LTR direction.
  49          * For internal use; add settings in the skin via $this->addStyle()
  50          */
  51         var $styles = array();
  52
  53         private $mIndexPolicy = 'index';
  54         private $mFollowPolicy = 'follow';
  55
  56         /**
  57          * Constructor
  58          * Initialise private variables
  59          */
  60         function __construct() {
  61                 global $wgAllowUserJs;
  62                 $this->mAllowUserJs = $wgAllowUserJs;
  63         }
  64
  65         public function redirect( $url, $responsecode = '302' ) {
  66                 # Strip newlines as a paranoia check for header injection in PHP<5.1.2
  67                 $this->mRedirect = str_replace( "\n", '', $url );
  68                 $this->mRedirectCode = $responsecode;
  69         }
  70
  71         public function getRedirect() {
  72                 return $this->mRedirect;
  73         }
  74
  75         /**
  76          * Set the HTTP status code to send with the output.
  77          *
  78          * @param int $statusCode
  79          * @return nothing
  80          */
  81         function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
  82
  83         /**
  84          * Add a new <meta> tag
  85          * To add an http-equiv meta tag, precede the name with "http:"
  86          *
  87          * @param $name tag name
  88          * @param $val tag value
  89          */
  90         function addMeta( $name, $val ) {
  91                 array_push( $this->mMetatags, array( $name, $val ) );
  92         }
  93
  94         function addKeyword( $text ) {
  95                 if( is_array( $text )) {
  96                         $this->mKeywords = array_merge( $this->mKeywords, $text );
  97                 } else {
  98                         array_push( $this->mKeywords, $text );
  99                 }
 100         }
 101         function addScript( $script ) {
 102                 $this->mScripts .= $script . "\n";
 103         }
 104
 105         /**
 106          * Register and add a stylesheet from an extension directory.
 107          * @param $url String path to sheet.  Provide either a full url (beginning
 108          *             with 'http', etc) or a relative path from the document root
 109          *             (beginning with '/').  Otherwise it behaves identically to
 110          *             addStyle() and draws from the /skins folder.
 111          */
 112         public function addExtensionStyle( $url ) {
 113                 array_push( $this->mExtStyles, $url );
 114         }
 115
 116         /**
 117          * Add a JavaScript file out of skins/common, or a given relative path.
 118          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 119          */
 120         function addScriptFile( $file ) {
 121                 global $wgStylePath, $wgScript, $wgUser;
 122                 global $wgEnableScriptLoader, $wgScriptPath;
 123
 124                 if( substr( $file, 0, 1 ) == '/' ) {
 125                         $path = $file;
 126                 } else {
 127                         $path = "{$wgStylePath}/common/{$file}";
 128                 }
 129
 130                 // If the class can be determined, use the addScriptClass method
 131                 $js_class = $this->getJsClassFromPath( $path );
 132                 if( $js_class ) {
 133                         $this->addScriptClass( $js_class );
 134                         return true;
 135                 }
 136
 137                 //do checks for wiki-titles
 138                 if( strpos( $path, $wgScript ) !== false ) {
 139                         $reqPath = str_replace( $wgScript . '?', '', $path );
 140                         $reqArgs = explode( '&', $reqPath );
 141                         $reqSet = array();
 142
 143                         foreach( $reqArgs as $arg ) {
 144                                 list( $key, $var ) = explode( '=', $arg );
 145                                 $reqSet[$key] = $var;
 146                         }
 147
 148                         if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 149                                 $jsTitleClass = 'WT:' . $reqSet['title'];
 150                                 if( $wgEnableScriptLoader ) {
 151                                         // Extract any extra parameters (for now just skin)
 152                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' )
 153                                                 ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 154                                         $this->mScriptLoaderClassList[] = $jsTitleClass . $ext_param ;
 155                                         return true;
 156                                 }else{
 157                                         $this->addScript( Html::linkedScript(
 158                                                                 wfAppendQuery( $path, $this->getURIDparam( $jsTitleClass ) )
 159                                                         )
 160                                                 );
 161                                         return true;
 162                                 }
 163                         }
 164                 }
 165                 // If the script loader could not be used, just add the script to the header
 166                 $this->addScript( Html::linkedScript( wfAppendQuery( $path, $this->getURIDparam() ) ) );
 167         }
 168
 169         /**
 170          * Add the core scripts that are included on every page, for later output into the header
 171          *
 172          * this includes the conditional sitejs
 173          */
 174         function addCoreScripts2Top(){
 175                 global $wgEnableScriptLoader, $wgJSAutoloadLocalClasses, $wgScriptPath, $wgEnableJS2system;
 176                 global $wgUser, $wgJsMimeType;
 177                 // @todo We should deprecate wikibits in favor of some mv_embed pieces and jQuery
 178
 179                 if( $wgEnableJS2system ){
 180                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 181                 } else {
 182                         $core_classes = array( 'wikibits' );
 183                 }
 184
 185                 //make sure scripts are on top:
 186                 $postScripts = $this->mScripts;
 187                 $this->mScripts = '';
 188
 189                 if( $wgEnableScriptLoader ){
 190                         //directly add script_loader call
 191                         //(separate from other scriptloader calls that may include extensions with conditional js)
 192                         $this->mScripts = $this->getScriptLoaderJs( $core_classes );
 193                 } else {
 194                         $so = '';
 195                         foreach( $core_classes as $js_class ){
 196                                 $this->addScriptClass( $js_class );
 197                         }
 198                 }
 199                 //now re-append any scripts that got added prior to the addCoreScripts2Top call
 200                 $this->mScripts = $this->mScripts . $postScripts;
 201         }
 202
 203         /**
 204          * @param string $js_class Name of the JavaScript class
 205          * @return boolean False if the class wasn't found, true on success
 206          */
 207         function addScriptClass( $js_class ){
 208                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 209                                 $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath, $wgStylePath, $wgEnableJS2system;
 210
 211                 $path = jsScriptLoader::getJsPathFromClass( $js_class );
 212                 if( $path !== false ){
 213                         if( $wgEnableScriptLoader ) {
 214                                 // Register it with the script loader
 215                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ) {
 216                                         $this->mScriptLoaderClassList[] = $js_class;
 217                                 }
 218                         } else {
 219                                 // Source the script directly
 220                                 $prefix = "skins/common/";
 221                                 if( substr( $path, 0, 1 ) == '/' ) {
 222                                         // straight path
 223                                 } elseif( substr( $path, 0, strlen( $prefix ) ) == $prefix ) {
 224                                         // Respect $wgStypePath
 225                                         $path = "{$wgStylePath}/common/" . substr( $path, strlen( $prefix ) );
 226                                 } else {
 227                                         $path = $wgScriptPath . '/' . $path;
 228                                 }
 229                                 $urlAppend = ( $wgDebugJavaScript ) ? time() : $this->getURIDparam( $js_class );
 230                                 $this->addScript( Html::linkedScript( "$path?$urlAppend" ) );
 231
 232                                 //merge in language text (if js2 is on and we have loadGM function)
 233                                 if( $wgEnableJS2system ){
 234                                         $inlineMsg = jsScriptLoader::getLocalizedMsgsFromClass( $js_class );
 235                                         if( $inlineMsg != '' )
 236                                                 $this->addScript( Html::inlineScript( $inlineMsg ));
 237                                 }
 238                         }
 239                         return true;
 240                 }
 241                 print "could not find: $js_class\n";
 242                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 243                 return false; // could not find the class
 244         }
 245
 246         /**
 247          * Get the <script> tag which will invoke the script loader
 248          * @param $classAry A class array which, if given, overrides $this->mScriptLoaderClassList
 249          */
 250         function getScriptLoaderJs( $classAry = array() ) {
 251                 global $wgRequest, $wgDebugJavaScript;
 252                 // If no class array was provided, use mScriptLoaderClassList
 253                 if( !count( $classAry ) ) {
 254                         $classAry = $this->mScriptLoaderClassList;
 255                 }
 256                 $class_list = implode( ',', $classAry );
 257
 258                 $debug_param = ( $wgDebugJavaScript ||
 259                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 260                                                  $wgRequest->getVal( 'debug' ) == '1' )
 261                                          ? '&debug=true' : '';
 262
 263                 return Html::linkedScript( wfScript( 'mwScriptLoader' ) .
 264                         "?class={$class_list}{$debug_param}&" . $this->getURIDparam( $classAry) ) . "\n";
 265         }
 266
 267         /**
 268          * Get the unique request ID parameter for the script-loader request
 269          */
 270         function getURIDparam( $classAry = array() ) {
 271                 global $wgDebugJavaScript, $wgStyleVersion, $IP, $wgScriptModifiedCheck;
 272                 if( $wgDebugJavaScript ) {
 273                         return 'urid=' . time();
 274                 } else {
 275                         //support single class_name attr
 276                         if( gettype( $classAry) == 'string'  ){
 277                                 $classAry = array( $classAry );
 278                         }
 279                         $ftime =  $frev = 0;
 280                         foreach( $classAry as $class ) {
 281                                 if( $wgScriptModifiedCheck ) {
 282                                         $js_path =  jsScriptLoader::getJsPathFromClass( $class );
 283                                         if( $js_path ) {
 284                                                 $cur_ftime = filemtime ( $IP ."/". $js_path );
 285                                                 if( $cur_ftime > $ftime )
 286                                                         $ftime = $cur_ftime;
 287                                         }
 288                                 }
 289                                 // Add the latest revision ID if the class set includes a WT (wiki title)
 290                                 if( substr($class, 0, 3) == 'WT:'){
 291                                         $title_str = substr($class, 3);
 292                                         $t = Title::newFromText( $title_str );
 293                                         if( $t && $t->exists() ) {
 294                                                 if( $t->getLatestRevID() > $frev  )
 295                                                         $frev = $t->getLatestRevID();
 296                                         }
 297                                 }
 298                         }
 299                         //build the actual unique request id:
 300                         $urid = "urid={$wgStyleVersion}";
 301
 302                         // Add the file modification time if set
 303                         if( $ftime != 0 )
 304                                 $urid .= "_" . $ftime;
 305
 306                         //add the wiki rev id if set
 307                         if( $frev != 0 )
 308                                 $urid.= "_" . $frev;
 309
 310                         return $urid;
 311                 }
 312         }
 313
 314         /**
 315          * Given a script path, get the JS class name, or false if no such path is registered.
 316          * @param $path string
 317          */
 318         function getJsClassFromPath( $path ) {
 319                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 320
 321                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 322                 foreach( $scriptLoaderPaths as $js_class => $js_path ) {
 323                         $js_path = "{$wgScriptPath}/{$js_path}";
 324                         if( $path == $js_path )
 325                                 return $js_class;
 326                 }
 327                 return false;
 328         }
 329
 330         /**
 331          * Add a self-contained script tag with the given contents
 332          * @param string $script JavaScript text, no <script> tags
 333          */
 334         function addInlineScript( $script ) {
 335                 $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
 336         }
 337
 338         /**
 339          * Get all registered JS and CSS tags for the header.
 340          */
 341         function getScript() {
 342                 global $wgEnableScriptLoader;
 343                 if( $wgEnableScriptLoader ){
 344                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 345                 } else {
 346                         return $this->mScripts . $this->getHeadItems();
 347                 }
 348         }
 349
 350         function getHeadItems() {
 351                 $s = '';
 352                 foreach ( $this->mHeadItems as $item ) {
 353                         $s .= $item;
 354                 }
 355                 return $s;
 356         }
 357
 358         function addHeadItem( $name, $value ) {
 359                 $this->mHeadItems[$name] = $value;
 360         }
 361
 362         function hasHeadItem( $name ) {
 363                 return isset( $this->mHeadItems[$name] );
 364         }
 365
 366         function setETag($tag) { $this->mETag = $tag; }
 367         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 368         function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 369
 370         function addLink( $linkarr ) {
 371                 # $linkarr should be an associative array of attributes. We'll escape on output.
 372                 array_push( $this->mLinktags, $linkarr );
 373         }
 374
 375         # Get all links added by extensions
 376         function getExtStyle() {
 377                 return $this->mExtStyles;
 378         }
 379
 380         function addMetadataLink( $linkarr ) {
 381                 # note: buggy CC software only reads first "meta" link
 382                 static $haveMeta = false;
 383                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 384                 $this->addLink( $linkarr );
 385                 $haveMeta = true;
 386         }
 387
 388         /**
 389          * checkLastModified tells the client to use the client-cached page if
 390          * possible. If sucessful, the OutputPage is disabled so that
 391          * any future call to OutputPage->output() have no effect.
 392          *
 393          * Side effect: sets mLastModified for Last-Modified header
 394          *
 395          * @return bool True iff cache-ok headers was sent.
 396          */
 397         function checkLastModified( $timestamp ) {
 398                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 399
 400                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 401                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 402                         return false;
 403                 }
 404                 if( !$wgCachePages ) {
 405                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 406                         return false;
 407                 }
 408                 if( $wgUser->getOption( 'nocache' ) ) {
 409                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 410                         return false;
 411                 }
 412
 413                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 414                 $modifiedTimes = array(
 415                         'page' => $timestamp,
 416                         'user' => $wgUser->getTouched(),
 417                         'epoch' => $wgCacheEpoch
 418                 );
 419                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 420
 421                 $maxModified = max( $modifiedTimes );
 422                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 423
 424                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 425                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 426                         return false;
 427                 }
 428
 429                 # Make debug info
 430                 $info = '';
 431                 foreach ( $modifiedTimes as $name => $value ) {
 432                         if ( $info !== '' ) {
 433                                 $info .= ', ';
 434                         }
 435                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 436                 }
 437
 438                 # IE sends sizes after the date like this:
 439                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 440                 # this breaks strtotime().
 441                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 442
 443                 wfSuppressWarnings(); // E_STRICT system time bitching
 444                 $clientHeaderTime = strtotime( $clientHeader );
 445                 wfRestoreWarnings();
 446                 if ( !$clientHeaderTime ) {
 447                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 448                         return false;
 449                 }
 450                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 451
 452                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 453                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 454                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 455                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 456                 if( $clientHeaderTime < $maxModified ) {
 457                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 458                         return false;
 459                 }
 460
 461                 # Not modified
 462                 # Give a 304 response code and disable body output
 463                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 464                 ini_set('zlib.output_compression', 0);
 465                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 466                 $this->sendCacheControl();
 467                 $this->disable();
 468
 469                 // Don't output a compressed blob when using ob_gzhandler;
 470                 // it's technically against HTTP spec and seems to confuse
 471                 // Firefox when the response gets split over two packets.
 472                 wfClearOutputBuffers();
 473
 474                 return true;
 475         }
 476
 477         function setPageTitleActionText( $text ) {
 478                 $this->mPageTitleActionText = $text;
 479         }
 480
 481         function getPageTitleActionText () {
 482                 if ( isset( $this->mPageTitleActionText ) ) {
 483                         return $this->mPageTitleActionText;
 484                 }
 485         }
 486
 487         /**
 488          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 489          *
 490          * @param $policy string The literal string to output as the contents of
 491          *   the meta tag.  Will be parsed according to the spec and output in
 492          *   standardized form.
 493          * @return null
 494          */
 495         public function setRobotPolicy( $policy ) {
 496                 $policy = Article::formatRobotPolicy( $policy );
 497
 498                 if( isset( $policy['index'] ) ){
 499                         $this->setIndexPolicy( $policy['index'] );
 500                 }
 501                 if( isset( $policy['follow'] ) ){
 502                         $this->setFollowPolicy( $policy['follow'] );
 503                 }
 504         }
 505
 506         /**
 507          * Set the index policy for the page, but leave the follow policy un-
 508          * touched.
 509          *
 510          * @param $policy string Either 'index' or 'noindex'.
 511          * @return null
 512          */
 513         public function setIndexPolicy( $policy ) {
 514                 $policy = trim( $policy );
 515                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 516                         $this->mIndexPolicy = $policy;
 517                 }
 518         }
 519
 520         /**
 521          * Set the follow policy for the page, but leave the index policy un-
 522          * touched.
 523          *
 524          * @param $policy string Either 'follow' or 'nofollow'.
 525          * @return null
 526          */
 527         public function setFollowPolicy( $policy ) {
 528                 $policy = trim( $policy );
 529                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 530                         $this->mFollowPolicy = $policy;
 531                 }
 532         }
 533
 534         /**
 535          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 536          */
 537         public function setHTMLTitle( $name ) {
 538                 $this->mHTMLtitle = $name;
 539         }
 540
 541         /**
 542          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 543          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 544          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 545          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 546          */
 547         public function setPageTitle( $name ) {
 548                 global $wgContLang;
 549                 $name = $wgContLang->convert( $name, true );
 550                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 551                 # but leave "<i>foobar</i>" alone
 552                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 553                 $this->mPagetitle = $nameWithTags;
 554
 555                 $taction =  $this->getPageTitleActionText();
 556                 if( !empty( $taction ) ) {
 557                         $name .= ' - '.$taction;
 558                 }
 559
 560                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 561                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 562         }
 563
 564         public function setTitle( $t ) {
 565                 $this->mTitle = $t;
 566         }
 567
 568         public function getTitle() {
 569                 if ( $this->mTitle instanceof Title ) {
 570                         return $this->mTitle;
 571                 }
 572                 else {
 573                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 574                         global $wgTitle;
 575                         return $wgTitle;
 576                 }
 577         }
 578
 579         public function getHTMLTitle() { return $this->mHTMLtitle; }
 580         public function getPageTitle() { return $this->mPagetitle; }
 581         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 582         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 583         public function getSubtitle() { return $this->mSubtitle; }
 584         public function isArticle() { return $this->mIsarticle; }
 585         public function setPrintable() { $this->mPrintable = true; }
 586         public function isPrintable() { return $this->mPrintable; }
 587         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 588         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 589         public function getOnloadHandler() { return $this->mOnloadHandler; }
 590         public function disable() { $this->mDoNothing = true; }
 591         public function isDisabled() { return $this->mDoNothing; }
 592
 593         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 594
 595         public function setFeedAppendQuery( $val ) {
 596                 global $wgFeedClasses;
 597
 598                 $this->mFeedLinks = array();
 599
 600                 foreach( $wgFeedClasses as $type => $class ) {
 601                         $query = "feed=$type&".$val;
 602                         $this->mFeedLinks[$type] = $this->getTitle()->getLocalURL( $query );
 603                 }
 604         }
 605
 606         public function addFeedLink( $format, $href ) {
 607                 $this->mFeedLinks[$format] = $href;
 608         }
 609
 610         public function isSyndicated() { return count($this->mFeedLinks); }
 611
 612         public function setArticleRelated( $v ) {
 613                 $this->mIsArticleRelated = $v;
 614                 if ( !$v ) {
 615                         $this->mIsarticle = false;
 616                 }
 617         }
 618         public function setArticleFlag( $v ) {
 619                 $this->mIsarticle = $v;
 620                 if ( $v ) {
 621                         $this->mIsArticleRelated = $v;
 622                 }
 623         }
 624
 625         public function isArticleRelated() { return $this->mIsArticleRelated; }
 626
 627         public function getLanguageLinks() { return $this->mLanguageLinks; }
 628         public function addLanguageLinks($newLinkArray) {
 629                 $this->mLanguageLinks += $newLinkArray;
 630         }
 631         public function setLanguageLinks($newLinkArray) {
 632                 $this->mLanguageLinks = $newLinkArray;
 633         }
 634
 635         public function getCategoryLinks() {
 636                 return $this->mCategoryLinks;
 637         }
 638
 639         /**
 640          * Add an array of categories, with names in the keys
 641          */
 642         public function addCategoryLinks( $categories ) {
 643                 global $wgUser, $wgContLang;
 644
 645                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 646                         return;
 647                 }
 648
 649                 # Add the links to a LinkBatch
 650                 $arr = array( NS_CATEGORY => $categories );
 651                 $lb = new LinkBatch;
 652                 $lb->setArray( $arr );
 653
 654                 # Fetch existence plus the hiddencat property
 655                 $dbr = wfGetDB( DB_SLAVE );
 656                 $pageTable = $dbr->tableName( 'page' );
 657                 $where = $lb->constructSet( 'page', $dbr );
 658                 $propsTable = $dbr->tableName( 'page_props' );
 659                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 660                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 661                 $res = $dbr->query( $sql, __METHOD__ );
 662
 663                 # Add the results to the link cache
 664                 $lb->addResultToCache( LinkCache::singleton(), $res );
 665
 666                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 667                 $categories = array_combine( array_keys( $categories ),
 668                         array_fill( 0, count( $categories ), 'normal' ) );
 669
 670                 # Mark hidden categories
 671                 foreach ( $res as $row ) {
 672                         if ( isset( $row->pp_value ) ) {
 673                                 $categories[$row->page_title] = 'hidden';
 674                         }
 675                 }
 676
 677                 # Add the remaining categories to the skin
 678                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 679                         $sk = $wgUser->getSkin();
 680                         foreach ( $categories as $category => $type ) {
 681                                 $origcategory = $category;
 682                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 683                                 $wgContLang->findVariantLink( $category, $title, true );
 684                                 if ( $category != $origcategory )
 685                                         if ( array_key_exists( $category, $categories ) )
 686                                                 continue;
 687                                 $text = $wgContLang->convertHtml( $title->getText() );
 688                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 689                         }
 690                 }
 691         }
 692
 693         public function setCategoryLinks($categories) {
 694                 $this->mCategoryLinks = array();
 695                 $this->addCategoryLinks($categories);
 696         }
 697
 698         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 699         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 700
 701         public function disallowUserJs() { $this->mAllowUserJs = false; }
 702         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 703
 704         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 705         public function addHTML( $text ) { $this->mBodytext .= $text; }
 706         public function clearHTML() { $this->mBodytext = ''; }
 707         public function getHTML() { return $this->mBodytext; }
 708         public function debug( $text ) { $this->mDebugtext .= $text; }
 709
 710         /* @deprecated */
 711         public function setParserOptions( $options ) {
 712                 wfDeprecated( __METHOD__ );
 713                 return $this->parserOptions( $options );
 714         }
 715
 716         public function parserOptions( $options = null ) {
 717                 if ( !$this->mParserOptions ) {
 718                         $this->mParserOptions = new ParserOptions;
 719                 }
 720                 return wfSetVar( $this->mParserOptions, $options );
 721         }
 722
 723         /**
 724          * Set the revision ID which will be seen by the wiki text parser
 725          * for things such as embedded {{REVISIONID}} variable use.
 726          * @param mixed $revid an integer, or NULL
 727          * @return mixed previous value
 728          */
 729         public function setRevisionId( $revid ) {
 730                 $val = is_null( $revid ) ? null : intval( $revid );
 731                 return wfSetVar( $this->mRevisionId, $val );
 732         }
 733
 734         public function getRevisionId() {
 735                 return $this->mRevisionId;
 736         }
 737
 738         /**
 739          * Convert wikitext to HTML and add it to the buffer
 740          * Default assumes that the current page title will
 741          * be used.
 742          *
 743          * @param string $text
 744          * @param bool   $linestart
 745          */
 746         public function addWikiText( $text, $linestart = true ) {
 747                 $title = $this->getTitle(); // Work arround E_STRICT
 748                 $this->addWikiTextTitle( $text, $title, $linestart );
 749         }
 750
 751         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 752                 $this->addWikiTextTitle($text, $title, $linestart);
 753         }
 754
 755         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 756                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 757         }
 758
 759         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 760                 global $wgParser;
 761
 762                 wfProfileIn( __METHOD__ );
 763
 764                 wfIncrStats( 'pcache_not_possible' );
 765
 766                 $popts = $this->parserOptions();
 767                 $oldTidy = $popts->setTidy( $tidy );
 768
 769                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 770                         $linestart, true, $this->mRevisionId );
 771
 772                 $popts->setTidy( $oldTidy );
 773
 774                 $this->addParserOutput( $parserOutput );
 775
 776                 wfProfileOut( __METHOD__ );
 777         }
 778
 779         /**
 780          * @todo document
 781          * @param ParserOutput object &$parserOutput
 782          */
 783         public function addParserOutputNoText( &$parserOutput ) {
 784                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 785
 786                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 787                 $this->addCategoryLinks( $parserOutput->getCategories() );
 788                 $this->mNewSectionLink = $parserOutput->getNewSection();
 789                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 790
 791                 $this->mParseWarnings = $parserOutput->getWarnings();
 792                 if ( $parserOutput->getCacheTime() == -1 ) {
 793                         $this->enableClientCache( false );
 794                 }
 795                 $this->mNoGallery = $parserOutput->getNoGallery();
 796                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 797                 // Versioning...
 798                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 799                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 800                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 801                         } else {
 802                                 $this->mTemplateIds[$ns] = $dbks;
 803                         }
 804                 }
 805                 // Page title
 806                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 807                         $this->setPageTitle( $dt );
 808                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 809                         $this->setPageTitle( $title );
 810
 811                 // Hooks registered in the object
 812                 global $wgParserOutputHooks;
 813                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 814                         list( $hookName, $data ) = $hookInfo;
 815                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 816                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 817                         }
 818                 }
 819
 820                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 821         }
 822
 823         /**
 824          * @todo document
 825          * @param ParserOutput &$parserOutput
 826          */
 827         function addParserOutput( &$parserOutput ) {
 828                 $this->addParserOutputNoText( $parserOutput );
 829                 $text = $parserOutput->getText();
 830                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 831                 $this->addHTML( $text );
 832         }
 833
 834         /**
 835          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 836          * Saves the text into the parser cache if possible.
 837          *
 838          * @param string  $text
 839          * @param Article $article
 840          * @param bool    $cache
 841          * @deprecated Use Article::outputWikitext
 842          */
 843         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 844                 global $wgParser;
 845
 846                 wfDeprecated( __METHOD__ );
 847
 848                 $popts = $this->parserOptions();
 849                 $popts->setTidy(true);
 850                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 851                         $popts, true, true, $this->mRevisionId );
 852                 $popts->setTidy(false);
 853                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 854                         $parserCache = ParserCache::singleton();
 855                         $parserCache->save( $parserOutput, $article, $popts);
 856                 }
 857
 858                 $this->addParserOutput( $parserOutput );
 859         }
 860
 861         /**
 862          * @deprecated use addWikiTextTidy()
 863          */
 864         public function addSecondaryWikiText( $text, $linestart = true ) {
 865                 wfDeprecated( __METHOD__ );
 866                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 867         }
 868
 869         /**
 870          * Add wikitext with tidy enabled
 871          */
 872         public function addWikiTextTidy(  $text, $linestart = true ) {
 873                 $title = $this->getTitle();
 874                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 875         }
 876
 877
 878         /**
 879          * Add the output of a QuickTemplate to the output buffer
 880          *
 881          * @param QuickTemplate $template
 882          */
 883         public function addTemplate( &$template ) {
 884                 ob_start();
 885                 $template->execute();
 886                 $this->addHTML( ob_get_contents() );
 887                 ob_end_clean();
 888         }
 889
 890         /**
 891          * Parse wikitext and return the HTML.
 892          *
 893          * @param string $text
 894          * @param bool   $linestart Is this the start of a line?
 895          * @param bool   $interface ??
 896          */
 897         public function parse( $text, $linestart = true, $interface = false ) {
 898                 global $wgParser;
 899                 if( is_null( $this->getTitle() ) ) {
 900                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 901                 }
 902                 $popts = $this->parserOptions();
 903                 if ( $interface) { $popts->setInterfaceMessage(true); }
 904                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 905                         $linestart, true, $this->mRevisionId );
 906                 if ( $interface) { $popts->setInterfaceMessage(false); }
 907                 return $parserOutput->getText();
 908         }
 909
 910         /** Parse wikitext, strip paragraphs, and return the HTML. */
 911         public function parseInline( $text, $linestart = true, $interface = false ) {
 912                 $parsed = $this->parse( $text, $linestart, $interface );
 913
 914                 $m = array();
 915                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 916                         $parsed = $m[1];
 917                 }
 918
 919                 return $parsed;
 920         }
 921
 922         /**
 923          * @param Article $article
 924          * @param User    $user
 925          *
 926          * @deprecated
 927          *
 928          * @return bool True if successful, else false.
 929          */
 930         public function tryParserCache( &$article ) {
 931                 wfDeprecated( __METHOD__ );
 932                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 933
 934                 if ($parserOutput !== false) {
 935                         $this->addParserOutput( $parserOutput );
 936                         return true;
 937                 } else {
 938                         return false;
 939                 }
 940         }
 941
 942         /**
 943          * @param int $maxage Maximum cache time on the Squid, in seconds.
 944          */
 945         public function setSquidMaxage( $maxage ) {
 946                 $this->mSquidMaxage = $maxage;
 947         }
 948
 949         /**
 950          * Use enableClientCache(false) to force it to send nocache headers
 951          * @param $state ??
 952          */
 953         public function enableClientCache( $state ) {
 954                 return wfSetVar( $this->mEnableClientCache, $state );
 955         }
 956
 957         function getCacheVaryCookies() {
 958                 global $wgCookiePrefix, $wgCacheVaryCookies;
 959                 static $cookies;
 960                 if ( $cookies === null ) {
 961                         $cookies = array_merge(
 962                                 array(
 963                                         "{$wgCookiePrefix}Token",
 964                                         "{$wgCookiePrefix}LoggedOut",
 965                                         session_name()
 966                                 ),
 967                                 $wgCacheVaryCookies
 968                         );
 969                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 970                 }
 971                 return $cookies;
 972         }
 973
 974         function uncacheableBecauseRequestVars() {
 975                 global $wgRequest;
 976                 return  $wgRequest->getText('useskin', false) === false
 977                         && $wgRequest->getText('uselang', false) === false;
 978         }
 979
 980         /**
 981          * Check if the request has a cache-varying cookie header
 982          * If it does, it's very important that we don't allow public caching
 983          */
 984         function haveCacheVaryCookies() {
 985                 global $wgRequest;
 986                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 987                 if ( $cookieHeader === false ) {
 988                         return false;
 989                 }
 990                 $cvCookies = $this->getCacheVaryCookies();
 991                 foreach ( $cvCookies as $cookieName ) {
 992                         # Check for a simple string match, like the way squid does it
 993                         if ( strpos( $cookieHeader, $cookieName ) ) {
 994                                 wfDebug( __METHOD__.": found $cookieName\n" );
 995                                 return true;
 996                         }
 997                 }
 998                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 999                 return false;
1000         }
1001
1002         /** Get a complete X-Vary-Options header */
1003         public function getXVO() {
1004                 $cvCookies = $this->getCacheVaryCookies();
1005                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
1006                 $first = true;
1007                 foreach ( $cvCookies as $cookieName ) {
1008                         if ( $first ) {
1009                                 $first = false;
1010                         } else {
1011                                 $xvo .= ';';
1012                         }
1013                         $xvo .= 'string-contains=' . $cookieName;
1014                 }
1015                 return $xvo;
1016         }
1017
1018         public function sendCacheControl() {
1019                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
1020
1021                 $response = $wgRequest->response();
1022                 if ($wgUseETag && $this->mETag)
1023                         $response->header("ETag: $this->mETag");
1024
1025                 # don't serve compressed data to clients who can't handle it
1026                 # maintain different caches for logged-in users and non-logged in ones
1027                 $response->header( 'Vary: Accept-Encoding, Cookie' );
1028
1029                 if ( $wgUseXVO ) {
1030                         # Add an X-Vary-Options header for Squid with Wikimedia patches
1031                         $response->header( $this->getXVO() );
1032                 }
1033
1034                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1035                         if( $wgUseSquid && session_id() == '' &&
1036                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1037                         {
1038                                 if ( $wgUseESI ) {
1039                                         # We'll purge the proxy cache explicitly, but require end user agents
1040                                         # to revalidate against the proxy on each visit.
1041                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1042                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1043                                         # start with a shorter timeout for initial testing
1044                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1045                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1046                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1047                                 } else {
1048                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1049                                         # to revalidate against the proxy on each visit.
1050                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1051                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1052                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1053                                         # start with a shorter timeout for initial testing
1054                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1055                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1056                                 }
1057                         } else {
1058                                 # We do want clients to cache if they can, but they *must* check for updates
1059                                 # on revisiting the page.
1060                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1061                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1062                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1063                         }
1064                         if($this->mLastModified) {
1065                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1066                         }
1067                 } else {
1068                         wfDebug( __METHOD__ . ": no caching **\n", false );
1069
1070                         # In general, the absence of a last modified header should be enough to prevent
1071                         # the client from using its cache. We send a few other things just to make sure.
1072                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1073                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1074                         $response->header( 'Pragma: no-cache' );
1075                 }
1076         }
1077
1078         /**
1079          * Finally, all the text has been munged and accumulated into
1080          * the object, let's actually output it:
1081          */
1082         public function output() {
1083                 global $wgUser, $wgOutputEncoding, $wgRequest;
1084                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1085                 global $wgUseAjax, $wgAjaxWatch;
1086                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1087                 global $wgArticle;
1088
1089                 if( $this->mDoNothing ){
1090                         return;
1091                 }
1092                 wfProfileIn( __METHOD__ );
1093                 if ( '' != $this->mRedirect ) {
1094                         # Standards require redirect URLs to be absolute
1095                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1096                         if( $this->mRedirectCode == '301') {
1097                                 if( !$wgDebugRedirects ) {
1098                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1099                                 }
1100                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1101                         }
1102                         $this->sendCacheControl();
1103
1104                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1105                         if( $wgDebugRedirects ) {
1106                                 $url = htmlspecialchars( $this->mRedirect );
1107                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1108                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1109                                 print "</body>\n</html>\n";
1110                         } else {
1111                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1112                         }
1113                         wfProfileOut( __METHOD__ );
1114                         return;
1115                 }
1116                 elseif ( $this->mStatusCode )
1117                 {
1118                         $statusMessage = array(
1119                                 100 => 'Continue',
1120                                 101 => 'Switching Protocols',
1121                                 102 => 'Processing',
1122                                 200 => 'OK',
1123                                 201 => 'Created',
1124                                 202 => 'Accepted',
1125                                 203 => 'Non-Authoritative Information',
1126                                 204 => 'No Content',
1127                                 205 => 'Reset Content',
1128                                 206 => 'Partial Content',
1129                                 207 => 'Multi-Status',
1130                                 300 => 'Multiple Choices',
1131                                 301 => 'Moved Permanently',
1132                                 302 => 'Found',
1133                                 303 => 'See Other',
1134                                 304 => 'Not Modified',
1135                                 305 => 'Use Proxy',
1136                                 307 => 'Temporary Redirect',
1137                                 400 => 'Bad Request',
1138                                 401 => 'Unauthorized',
1139                                 402 => 'Payment Required',
1140                                 403 => 'Forbidden',
1141                                 404 => 'Not Found',
1142                                 405 => 'Method Not Allowed',
1143                                 406 => 'Not Acceptable',
1144                                 407 => 'Proxy Authentication Required',
1145                                 408 => 'Request Timeout',
1146                                 409 => 'Conflict',
1147                                 410 => 'Gone',
1148                                 411 => 'Length Required',
1149                                 412 => 'Precondition Failed',
1150                                 413 => 'Request Entity Too Large',
1151                                 414 => 'Request-URI Too Large',
1152                                 415 => 'Unsupported Media Type',
1153                                 416 => 'Request Range Not Satisfiable',
1154                                 417 => 'Expectation Failed',
1155                                 422 => 'Unprocessable Entity',
1156                                 423 => 'Locked',
1157                                 424 => 'Failed Dependency',
1158                                 500 => 'Internal Server Error',
1159                                 501 => 'Not Implemented',
1160                                 502 => 'Bad Gateway',
1161                                 503 => 'Service Unavailable',
1162                                 504 => 'Gateway Timeout',
1163                                 505 => 'HTTP Version Not Supported',
1164                                 507 => 'Insufficient Storage'
1165                         );
1166
1167                         if ( $statusMessage[$this->mStatusCode] )
1168                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1169                 }
1170
1171                 $sk = $wgUser->getSkin();
1172
1173                 // Add our core scripts to output
1174                 $this->addCoreScripts2Top();
1175
1176                 if ( $wgUseAjax ) {
1177                         $this->addScriptFile( 'ajax.js' );
1178
1179                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1180
1181                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1182                                 $this->addScriptFile( 'ajaxwatch.js' );
1183                         }
1184
1185                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1186                                 $this->addScriptFile( 'mwsuggest.js' );
1187                         }
1188                 }
1189
1190                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1191                         $this->addScriptFile( 'rightclickedit.js' );
1192                 }
1193
1194                 global $wgUseAJAXCategories, $wgEnableJS2system;
1195                 if ($wgUseAJAXCategories && $wgEnableJS2system) {
1196                         global $wgAJAXCategoriesNamespaces;
1197
1198                         $title = $this->getTitle();
1199
1200                         if( empty( $wgAJAXCategoriesNamespaces ) || in_array( $title->getNamespace(), $wgAJAXCategoriesNamespaces ) ) {
1201                                 $this->addScriptClass( 'ajaxCategories' );
1202                         }
1203                 }
1204
1205                 if( $wgUniversalEditButton ) {
1206                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1207                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1208                                 // Original UniversalEditButton
1209                                 $msg = wfMsg('edit');
1210                                 $this->addLink( array(
1211                                         'rel' => 'alternate',
1212                                         'type' => 'application/x-wiki',
1213                                         'title' => $msg,
1214                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1215                                 ) );
1216                                 // Alternate edit link
1217                                 $this->addLink( array(
1218                                         'rel' => 'edit',
1219                                         'title' => $msg,
1220                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1221                                 ) );
1222                         }
1223                 }
1224
1225                 # Buffer output; final headers may depend on later processing
1226                 ob_start();
1227
1228                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1229                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1230
1231                 if ($this->mArticleBodyOnly) {
1232                         $this->out($this->mBodytext);
1233                 } else {
1234                         // Hook that allows last minute changes to the output page, e.g.
1235                         // adding of CSS or Javascript by extensions.
1236                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1237
1238                         wfProfileIn( 'Output-skin' );
1239                         $sk->outputPage( $this );
1240                         wfProfileOut( 'Output-skin' );
1241                 }
1242
1243                 $this->sendCacheControl();
1244                 ob_end_flush();
1245                 wfProfileOut( __METHOD__ );
1246         }
1247
1248         /**
1249          * Actually output something with print(). Performs an iconv to the
1250          * output encoding, if needed.
1251          * @param string $ins The string to output
1252          */
1253         public function out( $ins ) {
1254                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1255                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1256                         $outs = $ins;
1257                 } else {
1258                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1259                         if ( false === $outs ) { $outs = $ins; }
1260                 }
1261                 print $outs;
1262         }
1263
1264         /**
1265          * @todo document
1266          */
1267         public static function setEncodings() {
1268                 global $wgInputEncoding, $wgOutputEncoding;
1269                 global $wgContLang;
1270
1271                 $wgInputEncoding = strtolower( $wgInputEncoding );
1272
1273                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1274                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1275                         return;
1276                 }
1277                 $wgOutputEncoding = $wgInputEncoding;
1278         }
1279
1280         /**
1281          * Deprecated, use wfReportTime() instead.
1282          * @return string
1283          * @deprecated
1284          */
1285         public function reportTime() {
1286                 wfDeprecated( __METHOD__ );
1287                 $time = wfReportTime();
1288                 return $time;
1289         }
1290
1291         /**
1292          * Produce a "user is blocked" page.
1293          *
1294          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1295          * @return nothing
1296          */
1297         function blockedPage( $return = true ) {
1298                 global $wgUser, $wgContLang, $wgLang;
1299
1300                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1301                 $this->setRobotPolicy( 'noindex,nofollow' );
1302                 $this->setArticleRelated( false );
1303
1304                 $name = User::whoIs( $wgUser->blockedBy() );
1305                 $reason = $wgUser->blockedFor();
1306                 if( $reason == '' ) {
1307                         $reason = wfMsg( 'blockednoreason' );
1308                 }
1309                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1310                 $ip = wfGetIP();
1311
1312                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1313
1314                 $blockid = $wgUser->mBlock->mId;
1315
1316                 $blockExpiry = $wgUser->mBlock->mExpiry;
1317                 if ( $blockExpiry == 'infinity' ) {
1318                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1319                         // Search for localization in 'ipboptions'
1320                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1321                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1322                                 if ( strpos( $option, ":" ) === false )
1323                                         continue;
1324                                 list( $show, $value ) = explode( ":", $option );
1325                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1326                                         $blockExpiry = $show;
1327                                         break;
1328                                 }
1329                         }
1330                 } else {
1331                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1332                 }
1333
1334                 if ( $wgUser->mBlock->mAuto ) {
1335                         $msg = 'autoblockedtext';
1336                 } else {
1337                         $msg = 'blockedtext';
1338                 }
1339
1340                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1341                  * This could be a username, an ip range, or a single ip. */
1342                 $intended = $wgUser->mBlock->mAddress;
1343
1344                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1345
1346                 # Don't auto-return to special pages
1347                 if( $return ) {
1348                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1349                         $this->returnToMain( null, $return );
1350                 }
1351         }
1352
1353         /**
1354          * Output a standard error page
1355          *
1356          * @param string $title Message key for page title
1357          * @param string $msg Message key for page text
1358          * @param array $params Message parameters
1359          */
1360         public function showErrorPage( $title, $msg, $params = array() ) {
1361                 if ( $this->getTitle() ) {
1362                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1363                 }
1364                 $this->setPageTitle( wfMsg( $title ) );
1365                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1366                 $this->setRobotPolicy( 'noindex,nofollow' );
1367                 $this->setArticleRelated( false );
1368                 $this->enableClientCache( false );
1369                 $this->mRedirect = '';
1370                 $this->mBodytext = '';
1371
1372                 array_unshift( $params, 'parse' );
1373                 array_unshift( $params, $msg );
1374                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1375
1376                 $this->returnToMain();
1377         }
1378
1379         /**
1380          * Output a standard permission error page
1381          *
1382          * @param array $errors Error message keys
1383          */
1384         public function showPermissionsErrorPage( $errors, $action = null )
1385         {
1386                 $this->mDebugtext .= 'Original title: ' .
1387                 $this->getTitle()->getPrefixedText() . "\n";
1388                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1389                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1390                 $this->setRobotPolicy( 'noindex,nofollow' );
1391                 $this->setArticleRelated( false );
1392                 $this->enableClientCache( false );
1393                 $this->mRedirect = '';
1394                 $this->mBodytext = '';
1395                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1396         }
1397
1398         /** @deprecated */
1399         public function errorpage( $title, $msg ) {
1400                 wfDeprecated( __METHOD__ );
1401                 throw new ErrorPageError( $title, $msg );
1402         }
1403
1404         /**
1405          * Display an error page indicating that a given version of MediaWiki is
1406          * required to use it
1407          *
1408          * @param mixed $version The version of MediaWiki needed to use the page
1409          */
1410         public function versionRequired( $version ) {
1411                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1412                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1413                 $this->setRobotPolicy( 'noindex,nofollow' );
1414                 $this->setArticleRelated( false );
1415                 $this->mBodytext = '';
1416
1417                 $this->addWikiMsg( 'versionrequiredtext', $version );
1418                 $this->returnToMain();
1419         }
1420
1421         /**
1422          * Display an error page noting that a given permission bit is required.
1423          *
1424          * @param string $permission key required
1425          */
1426         public function permissionRequired( $permission ) {
1427                 global $wgLang;
1428
1429                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1430                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1431                 $this->setRobotPolicy( 'noindex,nofollow' );
1432                 $this->setArticleRelated( false );
1433                 $this->mBodytext = '';
1434
1435                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1436                         User::getGroupsWithPermission( $permission ) );
1437                 if( $groups ) {
1438                         $this->addWikiMsg( 'badaccess-groups',
1439                                 $wgLang->commaList( $groups ),
1440                                 count( $groups) );
1441                 } else {
1442                         $this->addWikiMsg( 'badaccess-group0' );
1443                 }
1444                 $this->returnToMain();
1445         }
1446
1447         /**
1448          * Use permissionRequired.
1449          * @deprecated
1450          */
1451         public function sysopRequired() {
1452                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1453         }
1454
1455         /**
1456          * Use permissionRequired.
1457          * @deprecated
1458          */
1459         public function developerRequired() {
1460                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1461         }
1462
1463         /**
1464          * Produce the stock "please login to use the wiki" page
1465          */
1466         public function loginToUse() {
1467                 global $wgUser, $wgContLang;
1468
1469                 if( $wgUser->isLoggedIn() ) {
1470                         $this->permissionRequired( 'read' );
1471                         return;
1472                 }
1473
1474                 $skin = $wgUser->getSkin();
1475
1476                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1477                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1478                 $this->setRobotPolicy( 'noindex,nofollow' );
1479                 $this->setArticleFlag( false );
1480
1481                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1482                 $loginLink = $skin->link(
1483                         $loginTitle,
1484                         wfMsgHtml( 'loginreqlink' ),
1485                         array(),
1486                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1487                         array( 'known', 'noclasses' )
1488                 );
1489                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1490                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1491
1492                 # Don't return to the main page if the user can't read it
1493                 # otherwise we'll end up in a pointless loop
1494                 $mainPage = Title::newMainPage();
1495                 if( $mainPage->userCanRead() )
1496                         $this->returnToMain( null, $mainPage );
1497         }
1498
1499         /** @deprecated */
1500         public function databaseError( $fname, $sql, $error, $errno ) {
1501                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1502         }
1503
1504         /**
1505          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1506          * @return string The wikitext error-messages, formatted into a list.
1507          */
1508         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1509                 if ($action == null) {
1510                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1511                 } else {
1512                         global $wgLang;
1513                         $action_desc = wfMsgNoTrans( "action-$action" );
1514                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1515                 }
1516
1517                 if (count( $errors ) > 1) {
1518                         $text .= '<ul class="permissions-errors">' . "\n";
1519
1520                         foreach( $errors as $error )
1521                         {
1522                                 $text .= '<li>';
1523                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1524                                 $text .= "</li>\n";
1525                         }
1526                         $text .= '</ul>';
1527                 } else {
1528                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1529                 }
1530
1531                 return $text;
1532         }
1533
1534         /**
1535          * Display a page stating that the Wiki is in read-only mode,
1536          * and optionally show the source of the page that the user
1537          * was trying to edit.  Should only be called (for this
1538          * purpose) after wfReadOnly() has returned true.
1539          *
1540          * For historical reasons, this function is _also_ used to
1541          * show the error message when a user tries to edit a page
1542          * they are not allowed to edit.  (Unless it's because they're
1543          * blocked, then we show blockedPage() instead.)  In this
1544          * case, the second parameter should be set to true and a list
1545          * of reasons supplied as the third parameter.
1546          *
1547          * @todo Needs to be split into multiple functions.
1548          *
1549          * @param string $source    Source code to show (or null).
1550          * @param bool   $protected Is this a permissions error?
1551          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1552          */
1553         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1554                 global $wgUser;
1555                 $skin = $wgUser->getSkin();
1556
1557                 $this->setRobotPolicy( 'noindex,nofollow' );
1558                 $this->setArticleRelated( false );
1559
1560                 // If no reason is given, just supply a default "I can't let you do
1561                 // that, Dave" message.  Should only occur if called by legacy code.
1562                 if ( $protected && empty($reasons) ) {
1563                         $reasons[] = array( 'badaccess-group0' );
1564                 }
1565
1566                 if ( !empty($reasons) ) {
1567                         // Permissions error
1568                         if( $source ) {
1569                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1570                                 $this->setSubtitle(
1571                                         wfMsg(
1572                                                 'viewsourcefor',
1573                                                 $skin->link(
1574                                                         $this->getTitle(),
1575                                                         null,
1576                                                         array(),
1577                                                         array(),
1578                                                         array( 'known', 'noclasses' )
1579                                                 )
1580                                         )
1581                                 );
1582                         } else {
1583                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1584                         }
1585                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1586                 } else {
1587                         // Wiki is read only
1588                         $this->setPageTitle( wfMsg( 'readonly' ) );
1589                         $reason = wfReadOnlyReason();
1590                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1591                 }
1592
1593                 // Show source, if supplied
1594                 if( is_string( $source ) ) {
1595                         $this->addWikiMsg( 'viewsourcetext' );
1596
1597                         $params = array(
1598                                 'id'   => 'wpTextbox1',
1599                                 'name' => 'wpTextbox1',
1600                                 'cols' => $wgUser->getOption( 'cols' ),
1601                                 'rows' => $wgUser->getOption( 'rows' ),
1602                                 'readonly' => 'readonly'
1603                         );
1604                         $this->addHTML( Html::element( 'textarea', $params, $source ) );
1605
1606                         // Show templates used by this article
1607                         $skin = $wgUser->getSkin();
1608                         $article = new Article( $this->getTitle() );
1609                         $this->addHTML( "<div class='templatesUsed'>
1610 {$skin->formatTemplates( $article->getUsedTemplates() )}
1611 </div>
1612 " );
1613                 }
1614
1615                 # If the title doesn't exist, it's fairly pointless to print a return
1616                 # link to it.  After all, you just tried editing it and couldn't, so
1617                 # what's there to do there?
1618                 if( $this->getTitle()->exists() ) {
1619                         $this->returnToMain( null, $this->getTitle() );
1620                 }
1621         }
1622
1623         /** @deprecated */
1624         public function fatalError( $message ) {
1625                 wfDeprecated( __METHOD__ );
1626                 throw new FatalError( $message );
1627         }
1628
1629         /** @deprecated */
1630         public function unexpectedValueError( $name, $val ) {
1631                 wfDeprecated( __METHOD__ );
1632                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1633         }
1634
1635         /** @deprecated */
1636         public function fileCopyError( $old, $new ) {
1637                 wfDeprecated( __METHOD__ );
1638                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1639         }
1640
1641         /** @deprecated */
1642         public function fileRenameError( $old, $new ) {
1643                 wfDeprecated( __METHOD__ );
1644                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1645         }
1646
1647         /** @deprecated */
1648         public function fileDeleteError( $name ) {
1649                 wfDeprecated( __METHOD__ );
1650                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1651         }
1652
1653         /** @deprecated */
1654         public function fileNotFoundError( $name ) {
1655                 wfDeprecated( __METHOD__ );
1656                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1657         }
1658
1659         public function showFatalError( $message ) {
1660                 $this->setPageTitle( wfMsg( "internalerror" ) );
1661                 $this->setRobotPolicy( "noindex,nofollow" );
1662                 $this->setArticleRelated( false );
1663                 $this->enableClientCache( false );
1664                 $this->mRedirect = '';
1665                 $this->mBodytext = $message;
1666         }
1667
1668         public function showUnexpectedValueError( $name, $val ) {
1669                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1670         }
1671
1672         public function showFileCopyError( $old, $new ) {
1673                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1674         }
1675
1676         public function showFileRenameError( $old, $new ) {
1677                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1678         }
1679
1680         public function showFileDeleteError( $name ) {
1681                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1682         }
1683
1684         public function showFileNotFoundError( $name ) {
1685                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1686         }
1687
1688         /**
1689          * Add a "return to" link pointing to a specified title
1690          *
1691          * @param Title $title Title to link
1692          * @param string $query Query string
1693          */
1694         public function addReturnTo( $title, $query = array() ) {
1695                 global $wgUser;
1696                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1697                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1698                         $title, null, array(), $query ) );
1699                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1700         }
1701
1702         /**
1703          * Add a "return to" link pointing to a specified title,
1704          * or the title indicated in the request, or else the main page
1705          *
1706          * @param null $unused No longer used
1707          * @param Title $returnto Title to return to
1708          */
1709         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1710                 global $wgRequest;
1711
1712                 if ( $returnto == null ) {
1713                         $returnto = $wgRequest->getText( 'returnto' );
1714                 }
1715
1716                 if ( $returntoquery == null ) {
1717                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1718                 }
1719
1720                 if ( '' === $returnto ) {
1721                         $returnto = Title::newMainPage();
1722                 }
1723
1724                 if ( is_object( $returnto ) ) {
1725                         $titleObj = $returnto;
1726                 } else {
1727                         $titleObj = Title::newFromText( $returnto );
1728                 }
1729                 if ( !is_object( $titleObj ) ) {
1730                         $titleObj = Title::newMainPage();
1731                 }
1732
1733                 $this->addReturnTo( $titleObj, $returntoquery );
1734         }
1735
1736         /**
1737          * @return string The doctype, opening <html>, and head element.
1738          *
1739          * @param $sk Skin The given Skin
1740          */
1741         public function headElement( Skin $sk, $includeStyle = true ) {
1742                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1743                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1744                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1745
1746                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1747                 if ( $sk->commonPrintStylesheet() ) {
1748                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1749                 }
1750                 $sk->setupUserCss( $this );
1751
1752                 $ret = '';
1753
1754                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1755                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1756                 }
1757
1758                 if ( '' == $this->getHTMLTitle() ) {
1759                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1760                 }
1761
1762                 $dir = $wgContLang->getDir();
1763
1764                 if ( $wgHtml5 ) {
1765                         $ret .= "<!doctype html>\n";
1766                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1767                 } else {
1768                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1769                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1770                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1771                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1772                         }
1773                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1774                 }
1775
1776                 $ret .= "<head>\n";
1777                 $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1778                 $ret .= implode( "\n", array(
1779                         $this->getHeadLinks(),
1780                         $this->buildCssLinks(),
1781                         $this->getHeadScripts( $sk ),
1782                         $this->getHeadItems(),
1783                 ));
1784                 if( $sk->usercss ){
1785                         $ret .= Html::inlineStyle( $sk->usercss );
1786                 }
1787
1788                 if( $wgEnableScriptLoader )
1789                         $ret .= $this->getScriptLoaderJs();
1790
1791                 if ($wgUseTrackbacks && $this->isArticleRelated())
1792                         $ret .= $this->getTitle()->trackbackRDF();
1793
1794                 $ret .= "</head>\n";
1795                 return $ret;
1796         }
1797
1798         /*
1799          * gets the global variables and mScripts
1800          *
1801          * also adds userjs to the end if enabled:
1802         */
1803         function getHeadScripts( Skin $sk ) {
1804                 global $wgUser, $wgRequest, $wgJsMimeType, $wgUseSiteJs;
1805
1806                 $vars = Skin::makeGlobalVariablesScript( $sk->getSkinName() );
1807
1808                 //add site JS if enabled:
1809                 if( $wgUseSiteJs ) {
1810                         $jsCache = $wgUser->isLoggedIn() ? '&smaxage=0' : '';
1811                         $this->addScriptFile(  Skin::makeUrl( '-',
1812                                         "action=raw$jsCache&gen=js&useskin=" .
1813                                         urlencode( $sk->getSkinName() )
1814                                         )
1815                                 );
1816                 }
1817
1818                 //add user js if enabled:
1819                 if( $this->isUserJsAllowed() && $wgUser->isLoggedIn() ) {
1820                         $action = $wgRequest->getVal( 'action', 'view' );
1821                         if( $this->mTitle && $this->mTitle->isJsSubpage() and $sk->userCanPreview( $action ) ) {
1822                                 # XXX: additional security check/prompt?
1823                                 $this->addInlineScript( $wgRequest->getText( 'wpTextbox1' ) );
1824                         } else {
1825                                 $userpage = $wgUser->getUserPage();
1826                                 $userjs = Skin::makeUrl(
1827                                         $userpage->getPrefixedText() . '/' . $sk->getSkinName() . '.js',
1828                                         'action=raw&ctype=' . $wgJsMimeType );
1829                                 $this->addScriptFile( $userjs );
1830                         }
1831                 }
1832
1833                 return $vars . "\n" . $this->mScripts;
1834         }
1835
1836         protected function addDefaultMeta() {
1837                 global $wgVersion, $wgHtml5;
1838
1839                 static $called = false;
1840                 if ( $called ) {
1841                         # Don't run this twice
1842                         return;
1843                 }
1844                 $called = true;
1845
1846                 if ( !$wgHtml5 ) {
1847                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1848                 }
1849                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1850
1851                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1852                 if( $p !== 'index,follow' ) {
1853                         // http://www.robotstxt.org/wc/meta-user.html
1854                         // Only show if it's different from the default robots policy
1855                         $this->addMeta( 'robots', $p );
1856                 }
1857
1858                 if ( count( $this->mKeywords ) > 0 ) {
1859                         $strip = array(
1860                                 "/<.*?" . ">/" => '',
1861                                 "/_/" => ' '
1862                         );
1863                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1864                 }
1865         }
1866
1867         /**
1868          * @return string HTML tag links to be put in the header.
1869          */
1870         public function getHeadLinks() {
1871                 global $wgRequest, $wgFeed;
1872
1873                 // Ideally this should happen earlier, somewhere. :P
1874                 $this->addDefaultMeta();
1875
1876                 $tags = array();
1877
1878                 foreach ( $this->mMetatags as $tag ) {
1879                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1880                                 $a = 'http-equiv';
1881                                 $tag[0] = substr( $tag[0], 5 );
1882                         } else {
1883                                 $a = 'name';
1884                         }
1885                         $tags[] = Html::element( 'meta',
1886                                 array(
1887                                         $a => $tag[0],
1888                                         'content' => $tag[1] ) );
1889                 }
1890                 foreach ( $this->mLinktags as $tag ) {
1891                         $tags[] = Html::element( 'link', $tag );
1892                 }
1893
1894                 if( $wgFeed ) {
1895                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1896                                 # Use the page name for the title (accessed through $wgTitle since
1897                                 # there's no other way).  In principle, this could lead to issues
1898                                 # with having the same name for different feeds corresponding to
1899                                 # the same page, but we can't avoid that at this low a level.
1900
1901                                 $tags[] = $this->feedLink(
1902                                         $format,
1903                                         $link,
1904                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1905                         }
1906
1907                         # Recent changes feed should appear on every page (except recentchanges,
1908                         # that would be redundant). Put it after the per-page feed to avoid
1909                         # changing existing behavior. It's still available, probably via a
1910                         # menu in your browser. Some sites might have a different feed they'd
1911                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1912                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1913                         # If so, use it instead.
1914
1915                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1916                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1917
1918                         if ( $wgOverrideSiteFeed ) {
1919                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1920                                         $tags[] = $this->feedLink (
1921                                                 $type,
1922                                                 htmlspecialchars( $feedUrl ),
1923                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1924                                 }
1925                         }
1926                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1927                                 foreach( $wgFeedClasses as $format => $class ) {
1928                                         $tags[] = $this->feedLink(
1929                                                 $format,
1930                                                 $rctitle->getLocalURL( "feed={$format}" ),
1931                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1932                                 }
1933                         }
1934                 }
1935
1936                 return implode( "\n", $tags );
1937         }
1938
1939         /**
1940          * Return URLs for each supported syndication format for this page.
1941          * @return array associating format keys with URLs
1942          */
1943         public function getSyndicationLinks() {
1944                 return $this->mFeedLinks;
1945         }
1946
1947         /**
1948          * Generate a <link rel/> for an RSS feed.
1949          */
1950         private function feedLink( $type, $url, $text ) {
1951                 return Html::element( 'link', array(
1952                         'rel' => 'alternate',
1953                         'type' => "application/$type+xml",
1954                         'title' => $text,
1955                         'href' => $url ) );
1956         }
1957
1958         /**
1959          * Add a local or specified stylesheet, with the given media options.
1960          * Meant primarily for internal use...
1961          *
1962          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1963          * @param $conditional -- for IE conditional comments, specifying an IE version
1964          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1965          */
1966         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1967                 $options = array();
1968                 // Even though we expect the media type to be lowercase, but here we
1969                 // force it to lowercase to be safe.
1970                 if( $media )
1971                         $options['media'] = $media;
1972                 if( $condition )
1973                         $options['condition'] = $condition;
1974                 if( $dir )
1975                         $options['dir'] = $dir;
1976                 $this->styles[$style] = $options;
1977         }
1978
1979         /**
1980          * Adds inline CSS styles
1981          * @param $style_css Mixed: inline CSS
1982          */
1983         public function addInlineStyle( $style_css ){
1984                 $this->mScripts .= Html::inlineStyle( $style_css );
1985         }
1986
1987         /**
1988          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1989          * These will be applied to various media & IE conditionals.
1990          */
1991         public function buildCssLinks() {
1992                 $links = array();
1993                 foreach( $this->styles as $file => $options ) {
1994                         $link = $this->styleLink( $file, $options );
1995                         if( $link )
1996                                 $links[] = $link;
1997                 }
1998
1999                 return implode( "\n", $links );
2000         }
2001
2002         protected function styleLink( $style, $options ) {
2003                 global $wgRequest;
2004
2005                 if( isset( $options['dir'] ) ) {
2006                         global $wgContLang;
2007                         $siteDir = $wgContLang->getDir();
2008                         if( $siteDir != $options['dir'] )
2009                                 return '';
2010                 }
2011
2012                 if( isset( $options['media'] ) ) {
2013                         $media = $this->transformCssMedia( $options['media'] );
2014                         if( is_null( $media ) ) {
2015                                 return '';
2016                         }
2017                 } else {
2018                         $media = 'all';
2019                 }
2020
2021                 if( substr( $style, 0, 1 ) == '/' ||
2022                         substr( $style, 0, 5 ) == 'http:' ||
2023                         substr( $style, 0, 6 ) == 'https:' ) {
2024                         $url = $style;
2025                 } else {
2026                         global $wgStylePath, $wgStyleVersion;
2027                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
2028                 }
2029
2030                 $link = Html::linkedStyle( $url, $media );
2031
2032                 if( isset( $options['condition'] ) ) {
2033                         $condition = htmlspecialchars( $options['condition'] );
2034                         $link = "<!--[if $condition]>$link<![endif]-->";
2035                 }
2036                 return $link;
2037         }
2038
2039         function transformCssMedia( $media ) {
2040                 global $wgRequest, $wgHandheldForIPhone;
2041
2042                 // Switch in on-screen display for media testing
2043                 $switches = array(
2044                         'printable' => 'print',
2045                         'handheld' => 'handheld',
2046                 );
2047                 foreach( $switches as $switch => $targetMedia ) {
2048                         if( $wgRequest->getBool( $switch ) ) {
2049                                 if( $media == $targetMedia ) {
2050                                         $media = '';
2051                                 } elseif( $media == 'screen' ) {
2052                                         return null;
2053                                 }
2054                         }
2055                 }
2056
2057                 // Expand longer media queries as iPhone doesn't grok 'handheld'
2058                 if( $wgHandheldForIPhone ) {
2059                         $mediaAliases = array(
2060                                 'screen' => 'screen and (min-device-width: 481px)',
2061                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
2062                         );
2063
2064                         if( isset( $mediaAliases[$media] ) ) {
2065                                 $media = $mediaAliases[$media];
2066                         }
2067                 }
2068
2069                 return $media;
2070         }
2071
2072         /**
2073          * Turn off regular page output and return an error reponse
2074          * for when rate limiting has triggered.
2075          */
2076         public function rateLimited() {
2077
2078                 $this->setPageTitle(wfMsg('actionthrottled'));
2079                 $this->setRobotPolicy( 'noindex,follow' );
2080                 $this->setArticleRelated( false );
2081                 $this->enableClientCache( false );
2082                 $this->mRedirect = '';
2083                 $this->clearHTML();
2084                 $this->setStatusCode(503);
2085                 $this->addWikiMsg( 'actionthrottledtext' );
2086
2087                 $this->returnToMain( null, $this->getTitle() );
2088         }
2089
2090         /**
2091          * Show an "add new section" link?
2092          *
2093          * @return bool
2094          */
2095         public function showNewSectionLink() {
2096                 return $this->mNewSectionLink;
2097         }
2098
2099         /**
2100         * Forcibly hide the new section link?
2101         *
2102         * @return bool
2103         */
2104         public function forceHideNewSectionLink() {
2105                 return $this->mHideNewSectionLink;
2106         }
2107
2108         /**
2109          * Show a warning about slave lag
2110          *
2111          * If the lag is higher than $wgSlaveLagCritical seconds,
2112          * then the warning is a bit more obvious. If the lag is
2113          * lower than $wgSlaveLagWarning, then no warning is shown.
2114          *
2115          * @param int $lag Slave lag
2116          */
2117         public function showLagWarning( $lag ) {
2118                 global $wgSlaveLagWarning, $wgSlaveLagCritical, $wgLang;
2119                 if( $lag >= $wgSlaveLagWarning ) {
2120                         $message = $lag < $wgSlaveLagCritical
2121                                 ? 'lag-warn-normal'
2122                                 : 'lag-warn-high';
2123                         $wrap = Html::rawElement( 'div', array( 'class' => "mw-{$message}" ), "\n$1\n" );
2124                         $this->wrapWikiMsg( "$wrap\n", array( $message, $wgLang->formatNum( $lag ) ) );
2125                 }
2126         }
2127
2128         /**
2129          * Add a wikitext-formatted message to the output.
2130          * This is equivalent to:
2131          *
2132          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2133          */
2134         public function addWikiMsg( /*...*/ ) {
2135                 $args = func_get_args();
2136                 $name = array_shift( $args );
2137                 $this->addWikiMsgArray( $name, $args );
2138         }
2139
2140         /**
2141          * Add a wikitext-formatted message to the output.
2142          * Like addWikiMsg() except the parameters are taken as an array
2143          * instead of a variable argument list.
2144          *
2145          * $options is passed through to wfMsgExt(), see that function for details.
2146          */
2147         public function addWikiMsgArray( $name, $args, $options = array() ) {
2148                 $options[] = 'parse';
2149                 $text = wfMsgExt( $name, $options, $args );
2150                 $this->addHTML( $text );
2151         }
2152
2153         /**
2154          * This function takes a number of message/argument specifications, wraps them in
2155          * some overall structure, and then parses the result and adds it to the output.
2156          *
2157          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2158          * on. The subsequent arguments may either be strings, in which case they are the
2159          * message names, or arrays, in which case the first element is the message name,
2160          * and subsequent elements are the parameters to that message.
2161          *
2162          * The special named parameter 'options' in a message specification array is passed
2163          * through to the $options parameter of wfMsgExt().
2164          *
2165          * Don't use this for messages that are not in users interface language.
2166          *
2167          * For example:
2168          *
2169          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2170          *
2171          * Is equivalent to:
2172          *
2173          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2174          */
2175         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2176                 $msgSpecs = func_get_args();
2177                 array_shift( $msgSpecs );
2178                 $msgSpecs = array_values( $msgSpecs );
2179                 $s = $wrap;
2180                 foreach ( $msgSpecs as $n => $spec ) {
2181                         $options = array();
2182                         if ( is_array( $spec ) ) {
2183                                 $args = $spec;
2184                                 $name = array_shift( $args );
2185                                 if ( isset( $args['options'] ) ) {
2186                                         $options = $args['options'];
2187                                         unset( $args['options'] );
2188                                 }
2189                         }  else {
2190                                 $args = array();
2191                                 $name = $spec;
2192                         }
2193                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2194                 }
2195                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2196         }
2197 }