includes/Skin.php

   1 <?php
   2 /**
   3  * @defgroup Skins Skins
   4  */
   5
   6 if ( !defined( 'MEDIAWIKI' ) ) {
   7         die( 1 );
   8 }
   9
  10 /**
  11  * The main skin class that provide methods and properties for all other skins.
  12  * This base class is also the "Standard" skin.
  13  *
  14  * See docs/skin.txt for more information.
  15  *
  16  * @ingroup Skins
  17  */
  18 abstract class Skin {
  19         protected $skinname = 'standard';
  20         protected $mRelevantTitle = null;
  21         protected $mRelevantUser = null;
  22
  23         /**
  24          * Fetch the set of available skins.
  25          * @return array of strings
  26          */
  27         static function getSkinNames() {
  28                 global $wgValidSkinNames;
  29                 static $skinsInitialised = false;
  30
  31                 if ( !$skinsInitialised || !count( $wgValidSkinNames ) ) {
  32                         # Get a list of available skins
  33                         # Build using the regular expression '^(.*).php$'
  34                         # Array keys are all lower case, array value keep the case used by filename
  35                         #
  36                         wfProfileIn( __METHOD__ . '-init' );
  37
  38                         global $wgStyleDirectory;
  39
  40                         $skinDir = dir( $wgStyleDirectory );
  41
  42                         # while code from www.php.net
  43                         while ( false !== ( $file = $skinDir->read() ) ) {
  44                                 // Skip non-PHP files, hidden files, and '.dep' includes
  45                                 $matches = array();
  46
  47                                 if ( preg_match( '/^([^.]*)\.php$/', $file, $matches ) ) {
  48                                         $aSkin = $matches[1];
  49                                         $wgValidSkinNames[strtolower( $aSkin )] = $aSkin;
  50                                 }
  51                         }
  52                         $skinDir->close();
  53                         $skinsInitialised = true;
  54                         wfProfileOut( __METHOD__ . '-init' );
  55                 }
  56                 return $wgValidSkinNames;
  57         }
  58
  59         /**
  60          * Fetch the list of usable skins in regards to $wgSkipSkins.
  61          * Useful for Special:Preferences and other places where you
  62          * only want to show skins users _can_ use.
  63          * @return array of strings
  64          */
  65         public static function getUsableSkins() {
  66                 global $wgSkipSkins;
  67
  68                 $usableSkins = self::getSkinNames();
  69
  70                 foreach ( $wgSkipSkins as $skip ) {
  71                         unset( $usableSkins[$skip] );
  72                 }
  73
  74                 return $usableSkins;
  75         }
  76
  77         /**
  78          * Normalize a skin preference value to a form that can be loaded.
  79          * If a skin can't be found, it will fall back to the configured
  80          * default (or the old 'Classic' skin if that's broken).
  81          * @param $key String: 'monobook', 'standard', etc.
  82          * @return string
  83          */
  84         static function normalizeKey( $key ) {
  85                 global $wgDefaultSkin;
  86
  87                 $skinNames = Skin::getSkinNames();
  88
  89                 if ( $key == '' ) {
  90                         // Don't return the default immediately;
  91                         // in a misconfiguration we need to fall back.
  92                         $key = $wgDefaultSkin;
  93                 }
  94
  95                 if ( isset( $skinNames[$key] ) ) {
  96                         return $key;
  97                 }
  98
  99                 // Older versions of the software used a numeric setting
 100                 // in the user preferences.
 101                 $fallback = array(
 102                         0 => $wgDefaultSkin,
 103                         1 => 'nostalgia',
 104                         2 => 'cologneblue'
 105                 );
 106
 107                 if ( isset( $fallback[$key] ) ) {
 108                         $key = $fallback[$key];
 109                 }
 110
 111                 if ( isset( $skinNames[$key] ) ) {
 112                         return $key;
 113                 } else if ( isset( $skinNames[$wgDefaultSkin] ) ) {
 114                         return $wgDefaultSkin;
 115                 } else {
 116                         return 'vector';
 117                 }
 118         }
 119
 120         /**
 121          * Factory method for loading a skin of a given type
 122          * @param $key String: 'monobook', 'standard', etc.
 123          * @return Skin
 124          */
 125         static function &newFromKey( $key ) {
 126                 global $wgStyleDirectory;
 127
 128                 $key = Skin::normalizeKey( $key );
 129
 130                 $skinNames = Skin::getSkinNames();
 131                 $skinName = $skinNames[$key];
 132                 $className = "Skin{$skinName}";
 133
 134                 # Grab the skin class and initialise it.
 135                 if ( !MWInit::classExists( $className ) ) {
 136
 137                         if ( !defined( 'MW_COMPILED' ) ) {
 138                                 // Preload base classes to work around APC/PHP5 bug
 139                                 $deps = "{$wgStyleDirectory}/{$skinName}.deps.php";
 140                                 if ( file_exists( $deps ) ) {
 141                                         include_once( $deps );
 142                                 }
 143                                 require_once( "{$wgStyleDirectory}/{$skinName}.php" );
 144                         }
 145
 146                         # Check if we got if not failback to default skin
 147                         if ( !MWInit::classExists( $className ) ) {
 148                                 # DO NOT die if the class isn't found. This breaks maintenance
 149                                 # scripts and can cause a user account to be unrecoverable
 150                                 # except by SQL manipulation if a previously valid skin name
 151                                 # is no longer valid.
 152                                 wfDebug( "Skin class does not exist: $className\n" );
 153                                 $className = 'SkinVector';
 154                                 if ( !defined( 'MW_COMPILED' ) ) {
 155                                         require_once( "{$wgStyleDirectory}/Vector.php" );
 156                                 }
 157                         }
 158                 }
 159                 $skin = new $className;
 160                 return $skin;
 161         }
 162
 163         /** @return string path to the skin stylesheet */
 164         function getStylesheet() {
 165                 return 'common/wikistandard.css';
 166         }
 167
 168         /** @return string skin name */
 169         public function getSkinName() {
 170                 return $this->skinname;
 171         }
 172
 173         function initPage( OutputPage $out ) {
 174                 wfProfileIn( __METHOD__ );
 175
 176                 $this->preloadExistence();
 177                 $this->setMembers();
 178
 179                 wfProfileOut( __METHOD__ );
 180         }
 181
 182         /**
 183          * Preload the existence of three commonly-requested pages in a single query
 184          */
 185         function preloadExistence() {
 186                 $user = $this->getContext()->getUser();
 187
 188                 // User/talk link
 189                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 190
 191                 // Other tab link
 192                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 193                         // nothing
 194                 } elseif ( $this->getTitle()->isTalkPage() ) {
 195                         $titles[] = $this->getTitle()->getSubjectPage();
 196                 } else {
 197                         $titles[] = $this->getTitle()->getTalkPage();
 198                 }
 199
 200                 $lb = new LinkBatch( $titles );
 201                 $lb->setCaller( __METHOD__ );
 202                 $lb->execute();
 203         }
 204
 205         /**
 206          * Set some local variables
 207          */
 208         protected function setMembers() {
 209                 $this->userpage = $this->getContext()->getUser()->getUserPage()->getPrefixedText();
 210                 $this->usercss = false;
 211         }
 212
 213         /**
 214          * Set the RequestContext used in this instance
 215          *
 216          * @param RequestContext $context
 217          */
 218         public function setContext( RequestContext $context ) {
 219                 $this->mContext = $context;
 220         }
 221
 222         /**
 223          * Get the RequestContext used in this instance
 224          *
 225          * @return RequestContext
 226          */
 227         public function getContext() {
 228                 if ( !isset($this->mContext) ) {
 229                         wfDebug( __METHOD__ . " called and \$mContext is null. Using RequestContext::getMain(); for sanity\n" );
 230                         $this->mContext = RequestContext::getMain();
 231                 }
 232                 return $this->mContext;
 233         }
 234
 235         /** Get the title
 236          *
 237          * @return Title
 238          */
 239         public function getTitle() {
 240                 return $this->getContext()->getTitle();
 241         }
 242
 243         /** Get the user
 244          *
 245          * @return User
 246          */
 247         public function getUser() {
 248                 return $this->getContext()->getUser();
 249         }
 250
 251         /**
 252          * Get the current revision ID
 253          *
 254          * @return Integer
 255          */
 256         public function getRevisionId() {
 257                 return $this->getContext()->getOutput()->getRevisionId();
 258         }
 259
 260         /**
 261          * Whether the revision displayed is the latest revision of the page
 262          *
 263          * @return Boolean
 264          */
 265         public function isRevisionCurrent() {
 266                 $revID = $this->getRevisionId();
 267                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 268         }
 269
 270         /**
 271          * Set the "relevant" title
 272          * @see self::getRelevantTitle()
 273          * @param $t Title object to use
 274          */
 275         public function setRelevantTitle( $t ) {
 276                 $this->mRelevantTitle = $t;
 277         }
 278
 279         /**
 280          * Return the "relevant" title.
 281          * A "relevant" title is not necessarily the actual title of the page.
 282          * Special pages like Special:MovePage use set the page they are acting on
 283          * as their "relevant" title, this allows the skin system to display things
 284          * such as content tabs which belong to to that page instead of displaying
 285          * a basic special page tab which has almost no meaning.
 286          */
 287         public function getRelevantTitle() {
 288                 if ( isset($this->mRelevantTitle) ) {
 289                         return $this->mRelevantTitle;
 290                 }
 291                 return $this->getTitle();
 292         }
 293
 294         /**
 295          * Set the "relevant" user
 296          * @see self::getRelevantUser()
 297          * @param $u User object to use
 298          */
 299         public function setRelevantUser( $u ) {
 300                 $this->mRelevantUser = $u;
 301         }
 302
 303         /**
 304          * Return the "relevant" user.
 305          * A "relevant" user is similar to a relevant title. Special pages like
 306          * Special:Contributions mark the user which they are relevant to so that
 307          * things like the toolbox can display the information they usually are only
 308          * able to display on a user's userpage and talkpage.
 309          * @return User
 310          */
 311         public function getRelevantUser() {
 312                 if ( isset($this->mRelevantUser) ) {
 313                         return $this->mRelevantUser;
 314                 }
 315                 $title = $this->getRelevantTitle();
 316                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 317                         $rootUser = strtok( $title->getText(), '/' );
 318                         if ( User::isIP( $rootUser ) ) {
 319                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 320                         } else {
 321                                 $user = User::newFromName( $rootUser );
 322                                 if ( $user->isLoggedIn() ) {
 323                                         $this->mRelevantUser = $user;
 324                                 }
 325                         }
 326                         return $this->mRelevantUser;
 327                 }
 328                 return null;
 329         }
 330
 331         /**
 332          * Outputs the HTML generated by other functions.
 333          * @param $out Object: instance of OutputPage
 334          */
 335         abstract function outputPage( OutputPage $out );
 336
 337         static function makeVariablesScript( $data ) {
 338                 if ( $data ) {
 339                         return Html::inlineScript(
 340                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 341                         );
 342                 } else {
 343                         return '';
 344                 }
 345         }
 346
 347         /**
 348          * To make it harder for someone to slip a user a fake
 349          * user-JavaScript or user-CSS preview, a random token
 350          * is associated with the login session. If it's not
 351          * passed back with the preview request, we won't render
 352          * the code.
 353          *
 354          * @param $action String: 'edit', 'submit' etc.
 355          * @return bool
 356          */
 357         public function userCanPreview( $action ) {
 358                 if ( $action != 'submit' ) {
 359                         return false;
 360                 }
 361                 if ( !$this->getContext()->getRequest()->wasPosted() ) {
 362                         return false;
 363                 }
 364                 if ( !$this->getTitle()->userCanEditCssSubpage() ) {
 365                         return false;
 366                 }
 367                 if ( !$this->getTitle()->userCanEditJsSubpage() ) {
 368                         return false;
 369                 }
 370
 371                 return $this->getContext()->getUser()->matchEditToken(
 372                         $this->getContext()->getRequest()->getVal( 'wpEditToken' ) );
 373         }
 374
 375         /**
 376          * Generated JavaScript action=raw&gen=js
 377          * This returns MediaWiki:Common.js and MediaWiki:[Skinname].js concate-
 378          * nated together.  For some bizarre reason, it does *not* return any
 379          * custom user JS from subpages.  Huh?
 380          *
 381          * There's absolutely no reason to have separate Monobook/Common JSes.
 382          * Any JS that cares can just check the skin variable generated at the
 383          * top.  For now Monobook.js will be maintained, but it should be consi-
 384          * dered deprecated.
 385          *
 386          * @param $skinName String: If set, overrides the skin name
 387          * @return string
 388          */
 389         public function generateUserJs( $skinName = null ) {
 390
 391                 // Stub - see ResourceLoaderSiteModule, CologneBlue, Simple and Standard skins override this
 392
 393                 return '';
 394         }
 395
 396         /**
 397          * Generate user stylesheet for action=raw&gen=css
 398          */
 399         public function generateUserStylesheet() {
 400
 401                 // Stub - see ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 402
 403                 return '';
 404         }
 405
 406         /**
 407          * Split for easier subclassing in SkinSimple, SkinStandard and SkinCologneBlue
 408          * Anything in here won't be generated if $wgAllowUserCssPrefs is false.
 409          */
 410         protected function reallyGenerateUserStylesheet() {
 411
 412                 // Stub - see  ResourceLoaderUserModule, CologneBlue, Simple and Standard skins override this
 413
 414                 return '';
 415         }
 416
 417         /**
 418          * @private
 419          */
 420         function setupUserCss( OutputPage $out ) {
 421                 global $wgUseSiteCss, $wgAllowUserCss, $wgAllowUserCssPrefs;
 422
 423                 wfProfileIn( __METHOD__ );
 424
 425                 $this->setupSkinUserCss( $out );
 426                 // Add any extension CSS
 427                 foreach ( $out->getExtStyle() as $url ) {
 428                         $out->addStyle( $url );
 429                 }
 430
 431                 // Per-site custom styles
 432                 if ( $wgUseSiteCss ) {
 433                         $out->addModuleStyles( array( 'site', 'noscript' ) );
 434                         if( $this->getContext()->getUser()->isLoggedIn() ){
 435                                 $out->addModuleStyles( 'user.groups' );
 436                         }
 437                 }
 438
 439                 // Per-user custom styles
 440                 if ( $wgAllowUserCss ) {
 441                         if ( $this->getTitle()->isCssSubpage() && $this->userCanPreview( $this->getContext()->getRequest()->getVal( 'action' ) ) ) {
 442                                 // @FIXME: properly escape the cdata!
 443                                 $out->addInlineStyle( $this->getContext()->getRequest()->getText( 'wpTextbox1' ) );
 444                         } else {
 445                                 $out->addModuleStyles( 'user' );
 446                         }
 447                 }
 448
 449                 // Per-user preference styles
 450                 if ( $wgAllowUserCssPrefs ) {
 451                         $out->addModuleStyles( 'user.options' );
 452                 }
 453
 454                 wfProfileOut( __METHOD__ );
 455         }
 456
 457         /**
 458          * Get the query to generate a dynamic stylesheet
 459          *
 460          * @return array
 461          */
 462         public static function getDynamicStylesheetQuery() {
 463                 global $wgSquidMaxage;
 464
 465                 return array(
 466                                 'action' => 'raw',
 467                                 'maxage' => $wgSquidMaxage,
 468                                 'usemsgcache' => 'yes',
 469                                 'ctype' => 'text/css',
 470                                 'smaxage' => $wgSquidMaxage,
 471                         );
 472         }
 473
 474         /**
 475          * Add skin specific stylesheets
 476          * @param $out OutputPage
 477          * @delete
 478          */
 479         abstract function setupSkinUserCss( OutputPage $out );
 480
 481         /**
 482          * TODO: document
 483          * @param $title Title
 484          * @return String
 485          */
 486         function getPageClasses( $title ) {
 487                 $numeric = 'ns-' . $title->getNamespace();
 488
 489                 if ( $title->getNamespace() == NS_SPECIAL ) {
 490                         $type = 'ns-special';
 491                         // bug 23315: provide a class based on the canonical special page name without subpages
 492                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 493                         if ( $canonicalName ) {
 494                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 495                         } else {
 496                                 $type .= ' mw-invalidspecialpage';
 497                         }
 498                 } elseif ( $title->isTalkPage() ) {
 499                         $type = 'ns-talk';
 500                 } else {
 501                         $type = 'ns-subject';
 502                 }
 503
 504                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 505
 506                 return "$numeric $type $name";
 507         }
 508
 509         /**
 510          * This will be called by OutputPage::headElement when it is creating the
 511          * <body> tag, skins can override it if they have a need to add in any
 512          * body attributes or classes of their own.
 513          */
 514         function addToBodyAttributes( $out, &$bodyAttrs ) {
 515                 // does nothing by default
 516         }
 517
 518         /**
 519          * URL to the logo
 520          */
 521         function getLogo() {
 522                 global $wgLogo;
 523                 return $wgLogo;
 524         }
 525
 526         /**
 527          * The format without an explicit $out argument is deprecated
 528          */
 529         function getCategoryLinks( OutputPage $out=null ) {
 530                 global $wgUseCategoryBrowser, $wgContLang;
 531
 532                 if( $out === null ){
 533                         $out = $this->getContext()->output;
 534                 }
 535
 536                 if ( count( $out->mCategoryLinks ) == 0 ) {
 537                         return '';
 538                 }
 539
 540                 # Separator
 541                 $sep = wfMsgExt( 'catseparator', array( 'parsemag', 'escapenoentities' ) );
 542
 543                 // Use Unicode bidi embedding override characters,
 544                 // to make sure links don't smash each other up in ugly ways.
 545                 $dir = $wgContLang->getDir();
 546                 $embed = "<span dir='$dir'>";
 547                 $pop = '</span>';
 548
 549                 $allCats = $out->getCategoryLinks();
 550                 $s = '';
 551                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 552
 553                 if ( !empty( $allCats['normal'] ) ) {
 554                         $t = $embed . implode( "{$pop} {$sep} {$embed}" , $allCats['normal'] ) . $pop;
 555
 556                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 557                         $s .= '<div id="mw-normal-catlinks">' .
 558                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 559                                 . $colon . $t . '</div>';
 560                 }
 561
 562                 # Hidden categories
 563                 if ( isset( $allCats['hidden'] ) ) {
 564                         if ( $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ) {
 565                                 $class = 'mw-hidden-cats-user-shown';
 566                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 567                                 $class = 'mw-hidden-cats-ns-shown';
 568                         } else {
 569                                 $class = 'mw-hidden-cats-hidden';
 570                         }
 571
 572                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 573                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 574                                 $colon . $embed . implode( "$pop $sep $embed", $allCats['hidden'] ) . $pop .
 575                                 '</div>';
 576                 }
 577
 578                 # optional 'dmoz-like' category browser. Will be shown under the list
 579                 # of categories an article belong to
 580                 if ( $wgUseCategoryBrowser ) {
 581                         $s .= '<br /><hr />';
 582
 583                         # get a big array of the parents tree
 584                         $parenttree = $this->getTitle()->getParentCategoryTree();
 585                         # Skin object passed by reference cause it can not be
 586                         # accessed under the method subfunction drawCategoryBrowser
 587                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree, $this ) );
 588                         # Clean out bogus first entry and sort them
 589                         unset( $tempout[0] );
 590                         asort( $tempout );
 591                         # Output one per line
 592                         $s .= implode( "<br />\n", $tempout );
 593                 }
 594
 595                 return $s;
 596         }
 597
 598         /**
 599          * Render the array as a serie of links.
 600          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 601          * @return String separated by &gt;, terminate with "\n"
 602          */
 603         function drawCategoryBrowser( $tree ) {
 604                 $return = '';
 605
 606                 foreach ( $tree as $element => $parent ) {
 607                         if ( empty( $parent ) ) {
 608                                 # element start a new list
 609                                 $return .= "\n";
 610                         } else {
 611                                 # grab the others elements
 612                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 613                         }
 614
 615                         # add our current element to the list
 616                         $eltitle = Title::newFromText( $element );
 617                         $return .=  Linker::link( $eltitle, $eltitle->getText() );
 618                 }
 619
 620                 return $return;
 621         }
 622
 623         /**
 624          * The ->getCategories() form is deprecated, please instead use
 625          * the ->getCategories( $out ) form with whatout OutputPage is on hand
 626          */
 627         function getCategories( OutputPage $out=null ) {
 628
 629                 $catlinks = $this->getCategoryLinks( $out );
 630
 631                 $classes = 'catlinks';
 632
 633                 // Check what we're showing
 634                 $allCats = $out->getCategoryLinks();
 635                 $showHidden = $this->getContext()->getUser()->getBoolOption( 'showhiddencats' ) ||
 636                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 637
 638                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 639                         $classes .= ' catlinks-allhidden';
 640                 }
 641
 642                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 643         }
 644
 645         /**
 646          * This runs a hook to allow extensions placing their stuff after content
 647          * and article metadata (e.g. categories).
 648          * Note: This function has nothing to do with afterContent().
 649          *
 650          * This hook is placed here in order to allow using the same hook for all
 651          * skins, both the SkinTemplate based ones and the older ones, which directly
 652          * use this class to get their data.
 653          *
 654          * The output of this function gets processed in SkinTemplate::outputPage() for
 655          * the SkinTemplate based skins, all other skins should directly echo it.
 656          *
 657          * Returns an empty string by default, if not changed by any hook function.
 658          */
 659         protected function afterContentHook() {
 660                 $data = '';
 661
 662                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 663                         // adding just some spaces shouldn't toggle the output
 664                         // of the whole <div/>, so we use trim() here
 665                         if ( trim( $data ) != '' ) {
 666                                 // Doing this here instead of in the skins to
 667                                 // ensure that the div has the same ID in all
 668                                 // skins
 669                                 $data = "<div id='mw-data-after-content'>\n" .
 670                                         "\t$data\n" .
 671                                         "</div>\n";
 672                         }
 673                 } else {
 674                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 675                 }
 676
 677                 return $data;
 678         }
 679
 680         /**
 681          * Generate debug data HTML for displaying at the bottom of the main content
 682          * area.
 683          * @return String HTML containing debug data, if enabled (otherwise empty).
 684          */
 685         protected function generateDebugHTML( OutputPage $out ) {
 686                 global $wgShowDebug;
 687
 688                 if ( $wgShowDebug ) {
 689                         $listInternals = $this->formatDebugHTML( $out->mDebugtext );
 690                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 691                                 $listInternals . "</ul>\n";
 692                 }
 693
 694                 return '';
 695         }
 696
 697         private function formatDebugHTML( $debugText ) {
 698                 global $wgDebugTimestamps;
 699
 700                 $lines = explode( "\n", $debugText );
 701                 $curIdent = 0;
 702                 $ret = '<li>';
 703
 704                 foreach ( $lines as $line ) {
 705                         $pre = '';
 706                         if ( $wgDebugTimestamps ) {
 707                                 $matches = array();
 708                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 709                                         $pre = $matches[1];
 710                                         $line = substr( $line, strlen( $pre ) );
 711                                 }
 712                         }
 713                         $display = ltrim( $line );
 714                         $ident = strlen( $line ) - strlen( $display );
 715                         $diff = $ident - $curIdent;
 716
 717                         $display = $pre . $display;
 718                         if ( $display == '' ) {
 719                                 $display = "\xc2\xa0";
 720                         }
 721
 722                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 723                                 $ident = $curIdent;
 724                                 $diff = 0;
 725                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 726                         } else {
 727                                 $display = htmlspecialchars( $display );
 728                         }
 729
 730                         if ( $diff < 0 ) {
 731                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 732                         } elseif ( $diff == 0 ) {
 733                                 $ret .= "</li><li>\n";
 734                         } else {
 735                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 736                         }
 737                         $ret .= "<tt>$display</tt>\n";
 738
 739                         $curIdent = $ident;
 740                 }
 741
 742                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 743
 744                 return $ret;
 745         }
 746
 747         /**
 748          * This gets called shortly before the </body> tag.
 749          * @param $out OutputPage object
 750          * @return String HTML-wrapped JS code to be put before </body>
 751          */
 752         function bottomScripts( $out ) {
 753                 // TODO and the suckage continues. This function is really just a wrapper around
 754                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 755                 // up at some point
 756                 $bottomScriptText = $out->getBottomScripts( $this );
 757                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 758
 759                 return $bottomScriptText;
 760         }
 761
 762         /** @return string Retrievied from HTML text */
 763         function printSource() {
 764                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 765                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 766         }
 767
 768         function getUndeleteLink() {
 769                 $action = $this->getContext()->getRequest()->getVal( 'action', 'view' );
 770
 771                 if ( $this->getContext()->getUser()->isAllowed( 'deletedhistory' ) &&
 772                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 773                         $n = $this->getTitle()->isDeleted();
 774
 775                         if ( $n ) {
 776                                 if ( $this->getContext()->getUser()->isAllowed( 'undelete' ) ) {
 777                                         $msg = 'thisisdeleted';
 778                                 } else {
 779                                         $msg = 'viewdeleted';
 780                                 }
 781
 782                                 return wfMsg(
 783                                         $msg,
 784                                         Linker::link(
 785                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 786                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getContext()->getLang()->formatNum( $n ) ),
 787                                                 array(),
 788                                                 array(),
 789                                                 array( 'known', 'noclasses' )
 790                                         )
 791                                 );
 792                         }
 793                 }
 794
 795                 return '';
 796         }
 797
 798         /**
 799          * The format without an explicit $out argument is deprecated
 800          */
 801         function subPageSubtitle( OutputPage $out=null ) {
 802                 $out = $this->getContext()->getOutput();
 803                 $subpages = '';
 804
 805                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 806                         return $subpages;
 807                 }
 808
 809                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 810                         $ptext = $this->getTitle()->getPrefixedText();
 811                         if ( preg_match( '/\//', $ptext ) ) {
 812                                 $links = explode( '/', $ptext );
 813                                 array_pop( $links );
 814                                 $c = 0;
 815                                 $growinglink = '';
 816                                 $display = '';
 817
 818                                 foreach ( $links as $link ) {
 819                                         $growinglink .= $link;
 820                                         $display .= $link;
 821                                         $linkObj = Title::newFromText( $growinglink );
 822
 823                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 824                                                 $getlink = $this->link(
 825                                                         $linkObj,
 826                                                         htmlspecialchars( $display ),
 827                                                         array(),
 828                                                         array(),
 829                                                         array( 'known', 'noclasses' )
 830                                                 );
 831
 832                                                 $c++;
 833
 834                                                 if ( $c > 1 ) {
 835                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 836                                                 } else  {
 837                                                         $subpages .= '&lt; ';
 838                                                 }
 839
 840                                                 $subpages .= $getlink;
 841                                                 $display = '';
 842                                         } else {
 843                                                 $display .= '/';
 844                                         }
 845                                         $growinglink .= '/';
 846                                 }
 847                         }
 848                 }
 849
 850                 return $subpages;
 851         }
 852
 853         /**
 854          * Returns true if the IP should be shown in the header
 855          */
 856         function showIPinHeader() {
 857                 global $wgShowIPinHeader;
 858                 return $wgShowIPinHeader && session_id() != '';
 859         }
 860
 861         function getSearchLink() {
 862                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 863                 return $searchPage->getLocalURL();
 864         }
 865
 866         function escapeSearchLink() {
 867                 return htmlspecialchars( $this->getSearchLink() );
 868         }
 869
 870         function getCopyright( $type = 'detect' ) {
 871                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 872
 873                 if ( $type == 'detect' ) {
 874                         $diff = $this->getContext()->getRequest()->getVal( 'diff' );
 875
 876                         if ( is_null( $diff ) && !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 877                                 $type = 'history';
 878                         } else {
 879                                 $type = 'normal';
 880                         }
 881                 }
 882
 883                 if ( $type == 'history' ) {
 884                         $msg = 'history_copyright';
 885                 } else {
 886                         $msg = 'copyright';
 887                 }
 888
 889                 $out = '';
 890
 891                 if ( $wgRightsPage ) {
 892                         $title = Title::newFromText( $wgRightsPage );
 893                         $link = Linker::linkKnown( $title, $wgRightsText );
 894                 } elseif ( $wgRightsUrl ) {
 895                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 896                 } elseif ( $wgRightsText ) {
 897                         $link = $wgRightsText;
 898                 } else {
 899                         # Give up now
 900                         return $out;
 901                 }
 902
 903                 // Allow for site and per-namespace customization of copyright notice.
 904                 $forContent = true;
 905
 906                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 907
 908                 if ( $forContent ) {
 909                         $out .= wfMsgForContent( $msg, $link );
 910                 } else {
 911                         $out .= wfMsg( $msg, $link );
 912                 }
 913
 914                 return $out;
 915         }
 916
 917         function getCopyrightIcon() {
 918                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 919
 920                 $out = '';
 921
 922                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 923                         $out = $wgCopyrightIcon;
 924                 } elseif ( $wgRightsIcon ) {
 925                         $icon = htmlspecialchars( $wgRightsIcon );
 926
 927                         if ( $wgRightsUrl ) {
 928                                 $url = htmlspecialchars( $wgRightsUrl );
 929                                 $out .= '<a href="' . $url . '">';
 930                         }
 931
 932                         $text = htmlspecialchars( $wgRightsText );
 933                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 934
 935                         if ( $wgRightsUrl ) {
 936                                 $out .= '</a>';
 937                         }
 938                 }
 939
 940                 return $out;
 941         }
 942
 943         /**
 944          * Gets the powered by MediaWiki icon.
 945          * @return string
 946          */
 947         function getPoweredBy() {
 948                 global $wgStylePath;
 949
 950                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 951                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 952                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 953                 return $text;
 954         }
 955
 956         /**
 957          * Get the timestamp of the latest revision, formatted in user language
 958          *
 959          * @param $article Article object. Used if we're working with the current revision
 960          * @return String
 961          */
 962         protected function lastModified( $article ) {
 963                 if ( !$this->isRevisionCurrent() ) {
 964                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 965                 } else {
 966                         $timestamp = $article->getTimestamp();
 967                 }
 968
 969                 if ( $timestamp ) {
 970                         $d = $this->getContext()->getLang()->date( $timestamp, true );
 971                         $t = $this->getContext()->getLang()->time( $timestamp, true );
 972                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 973                 } else {
 974                         $s = '';
 975                 }
 976
 977                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 978                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 979                 }
 980
 981                 return $s;
 982         }
 983
 984         function logoText( $align = '' ) {
 985                 if ( $align != '' ) {
 986                         $a = " align='{$align}'";
 987                 } else {
 988                         $a = '';
 989                 }
 990
 991                 $mp = wfMsg( 'mainpage' );
 992                 $mptitle = Title::newMainPage();
 993                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 994
 995                 $logourl = $this->getLogo();
 996                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 997
 998                 return $s;
 999         }
1000
1001         /**
1002          * Renders a $wgFooterIcons icon acording to the method's arguments
1003          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
1004          * @param $withImage Boolean: Whether to use the icon's image or output a text-only footericon
1005          */
1006         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
1007                 if ( is_string( $icon ) ) {
1008                         $html = $icon;
1009                 } else { // Assuming array
1010                         $url = isset($icon["url"]) ? $icon["url"] : null;
1011                         unset( $icon["url"] );
1012                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
1013                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
1014                         } else {
1015                                 $html = htmlspecialchars( $icon["alt"] );
1016                         }
1017                         if ( $url ) {
1018                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
1019                         }
1020                 }
1021                 return $html;
1022         }
1023
1024         /**
1025          * Gets the link to the wiki's main page.
1026          * @return string
1027          */
1028         function mainPageLink() {
1029                 $s = Linker::link(
1030                         Title::newMainPage(),
1031                         wfMsg( 'mainpage' ),
1032                         array(),
1033                         array(),
1034                         array( 'known', 'noclasses' )
1035                 );
1036
1037                 return $s;
1038         }
1039
1040         public function footerLink( $desc, $page ) {
1041                 // if the link description has been set to "-" in the default language,
1042                 if ( wfMsgForContent( $desc )  == '-' ) {
1043                         // then it is disabled, for all languages.
1044                         return '';
1045                 } else {
1046                         // Otherwise, we display the link for the user, described in their
1047                         // language (which may or may not be the same as the default language),
1048                         // but we make the link target be the one site-wide page.
1049                         $title = Title::newFromText( wfMsgForContent( $page ) );
1050
1051                         return Linker::linkKnown(
1052                                 $title,
1053                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
1054                         );
1055                 }
1056         }
1057
1058         /**
1059          * Gets the link to the wiki's privacy policy page.
1060          */
1061         function privacyLink() {
1062                 return $this->footerLink( 'privacy', 'privacypage' );
1063         }
1064
1065         /**
1066          * Gets the link to the wiki's about page.
1067          */
1068         function aboutLink() {
1069                 return $this->footerLink( 'aboutsite', 'aboutpage' );
1070         }
1071
1072         /**
1073          * Gets the link to the wiki's general disclaimers page.
1074          */
1075         function disclaimerLink() {
1076                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
1077         }
1078
1079         /**
1080          * Return URL options for the 'edit page' link.
1081          * This may include an 'oldid' specifier, if the current page view is such.
1082          *
1083          * @return array
1084          * @private
1085          */
1086         function editUrlOptions() {
1087                 $options = array( 'action' => 'edit' );
1088
1089                 if ( !$this->isRevisionCurrent() ) {
1090                         $options['oldid'] = intval( $this->getRevisionId() );
1091                 }
1092
1093                 return $options;
1094         }
1095
1096         function showEmailUser( $id ) {
1097                 $targetUser = User::newFromId( $id );
1098                 return $this->getContext()->getUser()->canSendEmail() && # the sending user must have a confirmed email address
1099                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
1100         }
1101
1102         /**
1103          * Return a fully resolved style path url to images or styles stored in the common folder.
1104          * This method returns a url resolved using the configured skin style path
1105          * and includes the style version inside of the url.
1106          * @param $name String: The name or path of a skin resource file
1107          * @return String The fully resolved style path url including styleversion
1108          */
1109         function getCommonStylePath( $name ) {
1110                 global $wgStylePath, $wgStyleVersion;
1111                 return "$wgStylePath/common/$name?$wgStyleVersion";
1112         }
1113
1114         /**
1115          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
1116          * This method returns a url resolved using the configured skin style path
1117          * and includes the style version inside of the url.
1118          * @param $name String: The name or path of a skin resource file
1119          * @return String The fully resolved style path url including styleversion
1120          */
1121         function getSkinStylePath( $name ) {
1122                 global $wgStylePath, $wgStyleVersion;
1123                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
1124         }
1125
1126         /* these are used extensively in SkinTemplate, but also some other places */
1127         static function makeMainPageUrl( $urlaction = '' ) {
1128                 $title = Title::newMainPage();
1129                 self::checkTitle( $title, '' );
1130
1131                 return $title->getLocalURL( $urlaction );
1132         }
1133
1134         static function makeSpecialUrl( $name, $urlaction = '' ) {
1135                 $title = SpecialPage::getSafeTitleFor( $name );
1136                 return $title->getLocalURL( $urlaction );
1137         }
1138
1139         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
1140                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
1141                 return $title->getLocalURL( $urlaction );
1142         }
1143
1144         static function makeI18nUrl( $name, $urlaction = '' ) {
1145                 $title = Title::newFromText( wfMsgForContent( $name ) );
1146                 self::checkTitle( $title, $name );
1147                 return $title->getLocalURL( $urlaction );
1148         }
1149
1150         static function makeUrl( $name, $urlaction = '' ) {
1151                 $title = Title::newFromText( $name );
1152                 self::checkTitle( $title, $name );
1153
1154                 return $title->getLocalURL( $urlaction );
1155         }
1156
1157         /**
1158          * If url string starts with http, consider as external URL, else
1159          * internal
1160          */
1161         static function makeInternalOrExternalUrl( $name ) {
1162                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1163                         return $name;
1164                 } else {
1165                         return self::makeUrl( $name );
1166                 }
1167         }
1168
1169         # this can be passed the NS number as defined in Language.php
1170         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1171                 $title = Title::makeTitleSafe( $namespace, $name );
1172                 self::checkTitle( $title, $name );
1173
1174                 return $title->getLocalURL( $urlaction );
1175         }
1176
1177         /* these return an array with the 'href' and boolean 'exists' */
1178         static function makeUrlDetails( $name, $urlaction = '' ) {
1179                 $title = Title::newFromText( $name );
1180                 self::checkTitle( $title, $name );
1181
1182                 return array(
1183                         'href' => $title->getLocalURL( $urlaction ),
1184                         'exists' => $title->getArticleID() != 0,
1185                 );
1186         }
1187
1188         /**
1189          * Make URL details where the article exists (or at least it's convenient to think so)
1190          */
1191         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1192                 $title = Title::newFromText( $name );
1193                 self::checkTitle( $title, $name );
1194
1195                 return array(
1196                         'href' => $title->getLocalURL( $urlaction ),
1197                         'exists' => true
1198                 );
1199         }
1200
1201         # make sure we have some title to operate on
1202         static function checkTitle( &$title, $name ) {
1203                 if ( !is_object( $title ) ) {
1204                         $title = Title::newFromText( $name );
1205                         if ( !is_object( $title ) ) {
1206                                 $title = Title::newFromText( '--error: link target missing--' );
1207                         }
1208                 }
1209         }
1210
1211         /**
1212          * Build an array that represents the sidebar(s), the navigation bar among them
1213          *
1214          * @return array
1215          */
1216         function buildSidebar() {
1217                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1218                 wfProfileIn( __METHOD__ );
1219
1220                 $key = wfMemcKey( 'sidebar', $this->getContext()->getLang()->getCode() );
1221
1222                 if ( $wgEnableSidebarCache ) {
1223                         $cachedsidebar = $parserMemc->get( $key );
1224                         if ( $cachedsidebar ) {
1225                                 wfProfileOut( __METHOD__ );
1226                                 return $cachedsidebar;
1227                         }
1228                 }
1229
1230                 $bar = array();
1231                 $this->addToSidebar( $bar, 'sidebar' );
1232
1233                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1234                 if ( $wgEnableSidebarCache ) {
1235                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1236                 }
1237
1238                 wfProfileOut( __METHOD__ );
1239                 return $bar;
1240         }
1241         /**
1242          * Add content from a sidebar system message
1243          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1244          *
1245          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1246          *
1247          * @param &$bar array
1248          * @param $message String
1249          */
1250         function addToSidebar( &$bar, $message ) {
1251                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1252         }
1253
1254         /**
1255          * Add content from plain text
1256          * @since 1.17
1257          * @param &$bar array
1258          * @param $text string
1259          */
1260         function addToSidebarPlain( &$bar, $text ) {
1261                 $lines = explode( "\n", $text );
1262                 $wikiBar = array(); # We need to handle the wikitext on a different variable, to avoid trying to do an array operation on text, which would be a fatal error.
1263
1264                 $heading = '';
1265
1266                 foreach ( $lines as $line ) {
1267                         if ( strpos( $line, '*' ) !== 0 ) {
1268                                 continue;
1269                         }
1270
1271                         if ( strpos( $line, '**' ) !== 0 ) {
1272                                 $heading = trim( $line, '* ' );
1273                                 if ( !array_key_exists( $heading, $bar ) ) {
1274                                         $bar[$heading] = array();
1275                                 }
1276                         } else {
1277                                 $line = trim( $line, '* ' );
1278
1279                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1280                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1281                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1282                                         $link = wfMsgForContent( $line[0] );
1283
1284                                         if ( $link == '-' ) {
1285                                                 continue;
1286                                         }
1287
1288                                         $text = wfMsgExt( $line[1], 'parsemag' );
1289
1290                                         if ( wfEmptyMsg( $line[1] ) ) {
1291                                                 $text = $line[1];
1292                                         }
1293
1294                                         if ( wfEmptyMsg( $line[0] ) ) {
1295                                                 $link = $line[0];
1296                                         }
1297
1298                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1299                                                 $href = $link;
1300                                         } else {
1301                                                 $title = Title::newFromText( $link );
1302
1303                                                 if ( $title ) {
1304                                                         $title = $title->fixSpecialName();
1305                                                         $href = $title->getLocalURL();
1306                                                 } else {
1307                                                         $href = 'INVALID-TITLE';
1308                                                 }
1309                                         }
1310
1311                                         $bar[$heading][] = array(
1312                                                 'text' => $text,
1313                                                 'href' => $href,
1314                                                 'id' => 'n-' . strtr( $line[1], ' ', '-' ),
1315                                                 'active' => false
1316                                         );
1317                                 } else if ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1318                                         global $wgParser;
1319
1320                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1321
1322                                         $options = new ParserOptions();
1323                                         $options->setEditSection( false );
1324                                         $options->setInterfaceMessage( true );
1325                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1326                                 } else {
1327                                         continue;
1328                                 }
1329                         }
1330                 }
1331
1332                 if ( count( $wikiBar ) > 0 ) {
1333                         $bar = array_merge( $bar, $wikiBar );
1334                 }
1335
1336                 return $bar;
1337         }
1338
1339         /**
1340          * Should we include common/wikiprintable.css?  Skins that have their own
1341          * print stylesheet should override this and return false.  (This is an
1342          * ugly hack to get Monobook to play nicely with
1343          * OutputPage::headElement().)
1344          *
1345          * @return bool
1346          */
1347         public function commonPrintStylesheet() {
1348                 return true;
1349         }
1350
1351         /**
1352          * Gets new talk page messages for the current user.
1353          * @return MediaWiki message or if no new talk page messages, nothing
1354          */
1355         function getNewtalks() {
1356                 $out = $this->getContext()->getOutput();
1357
1358                 $newtalks = $this->getContext()->getUser()->getNewMessageLinks();
1359                 $ntl = '';
1360
1361                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1362                         $userTitle = $this->getUser()->getUserPage();
1363                         $userTalkTitle = $userTitle->getTalkPage();
1364
1365                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1366                                 $newMessagesLink = $this->link(
1367                                         $userTalkTitle,
1368                                         wfMsgHtml( 'newmessageslink' ),
1369                                         array(),
1370                                         array( 'redirect' => 'no' ),
1371                                         array( 'known', 'noclasses' )
1372                                 );
1373
1374                                 $newMessagesDiffLink = $this->link(
1375                                         $userTalkTitle,
1376                                         wfMsgHtml( 'newmessagesdifflink' ),
1377                                         array(),
1378                                         array( 'diff' => 'cur' ),
1379                                         array( 'known', 'noclasses' )
1380                                 );
1381
1382                                 $ntl = wfMsg(
1383                                         'youhavenewmessages',
1384                                         $newMessagesLink,
1385                                         $newMessagesDiffLink
1386                                 );
1387                                 # Disable Squid cache
1388                                 $out->setSquidMaxage( 0 );
1389                         }
1390                 } elseif ( count( $newtalks ) ) {
1391                         // _>" " for BC <= 1.16
1392                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1393                         $msgs = array();
1394
1395                         foreach ( $newtalks as $newtalk ) {
1396                                 $msgs[] = Xml::element(
1397                                         'a',
1398                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1399                                 );
1400                         }
1401                         $parts = implode( $sep, $msgs );
1402                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1403                         $out->setSquidMaxage( 0 );
1404                 }
1405
1406                 return $ntl;
1407         }
1408
1409         /**
1410          * Get a cached notice
1411          *
1412          * @param $name String: message name, or 'default' for $wgSiteNotice
1413          * @return String: HTML fragment
1414          */
1415         private function getCachedNotice( $name ) {
1416                 global $wgRenderHashAppend, $parserMemc;
1417
1418                 wfProfileIn( __METHOD__ );
1419
1420                 $needParse = false;
1421
1422                 if( $name === 'default' ) {
1423                         // special case
1424                         global $wgSiteNotice;
1425                         $notice = $wgSiteNotice;
1426                         if( empty( $notice ) ) {
1427                                 wfProfileOut( __METHOD__ );
1428                                 return false;
1429                         }
1430                 } else {
1431                         $msg = wfMessage( $name )->inContentLanguage();
1432                         if( $msg->isDisabled() ) {
1433                                 wfProfileOut( __METHOD__ );
1434                                 return false;
1435                         }
1436                         $notice = $msg->plain();
1437                 }
1438
1439                 // Use the extra hash appender to let eg SSL variants separately cache.
1440                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1441                 $cachedNotice = $parserMemc->get( $key );
1442                 if( is_array( $cachedNotice ) ) {
1443                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1444                                 $notice = $cachedNotice['html'];
1445                         } else {
1446                                 $needParse = true;
1447                         }
1448                 } else {
1449                         $needParse = true;
1450                 }
1451
1452                 if ( $needParse ) {
1453                         $parsed = $this->getContext()->getOutput()->parse( $notice );
1454                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1455                         $notice = $parsed;
1456                 }
1457
1458                 $notice = '<div id="localNotice">' .$notice . '</div>';
1459                 wfProfileOut( __METHOD__ );
1460                 return $notice;
1461         }
1462
1463         /**
1464          * Get a notice based on page's namespace
1465          *
1466          * @return String: HTML fragment
1467          */
1468         function getNamespaceNotice() {
1469                 wfProfileIn( __METHOD__ );
1470
1471                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1472                 $namespaceNotice = $this->getCachedNotice( $key );
1473                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1474                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1475                 } else {
1476                         $namespaceNotice = '';
1477                 }
1478
1479                 wfProfileOut( __METHOD__ );
1480                 return $namespaceNotice;
1481         }
1482
1483         /**
1484          * Get the site notice
1485          *
1486          * @return String: HTML fragment
1487          */
1488         function getSiteNotice() {
1489                 wfProfileIn( __METHOD__ );
1490                 $siteNotice = '';
1491
1492                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1493                         if ( is_object( $this->getContext()->getUser() ) && $this->getContext()->getUser()->isLoggedIn() ) {
1494                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1495                         } else {
1496                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1497                                 if ( !$anonNotice ) {
1498                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1499                                 } else {
1500                                         $siteNotice = $anonNotice;
1501                                 }
1502                         }
1503                         if ( !$siteNotice ) {
1504                                 $siteNotice = $this->getCachedNotice( 'default' );
1505                         }
1506                 }
1507
1508                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1509                 wfProfileOut( __METHOD__ );
1510                 return $siteNotice;
1511         }
1512
1513         /**
1514          * Create a section edit link.  This supersedes editSectionLink() and
1515          * editSectionLinkForOther().
1516          *
1517          * @param $nt      Title  The title being linked to (may not be the same as
1518          *   $wgTitle, if the section is included from a template)
1519          * @param $section string The designation of the section being pointed to,
1520          *   to be included in the link, like "&section=$section"
1521          * @param $tooltip string The tooltip to use for the link: will be escaped
1522          *   and wrapped in the 'editsectionhint' message
1523          * @param $lang    string Language code
1524          * @return         string HTML to use for edit link
1525          */
1526         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1527                 // HTML generated here should probably have userlangattributes
1528                 // added to it for LTR text on RTL pages
1529                 $attribs = array();
1530                 if ( !is_null( $tooltip ) ) {
1531                         # Bug 25462: undo double-escaping.
1532                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1533                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1534                 }
1535                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1536                         $attribs,
1537                         array( 'action' => 'edit', 'section' => $section ),
1538                         array( 'noclasses', 'known' )
1539                 );
1540
1541                 # Run the old hook.  This takes up half of the function . . . hopefully
1542                 # we can rid of it someday.
1543                 $attribs = '';
1544                 if ( $tooltip ) {
1545                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1546                         $attribs = " title=\"$attribs\"";
1547                 }
1548                 $result = null;
1549                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1550                 if ( !is_null( $result ) ) {
1551                         # For reverse compatibility, add the brackets *after* the hook is
1552                         # run, and even add them to hook-provided text.  (This is the main
1553                         # reason that the EditSectionLink hook is deprecated in favor of
1554                         # DoEditSectionLink: it can't change the brackets or the span.)
1555                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1556                         return "<span class=\"editsection\">$result</span>";
1557                 }
1558
1559                 # Add the brackets and the span, and *then* run the nice new hook, with
1560                 # clean and non-redundant arguments.
1561                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1562                 $result = "<span class=\"editsection\">$result</span>";
1563
1564                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1565                 return $result;
1566         }
1567
1568         /**
1569          * Use PHP's magic __call handler to intercept legacy calls to the linker
1570          * for backwards compatibility.
1571          *
1572          * @param $fname String Name of called method
1573          * @param $args Array Arguments to the method
1574          */
1575         function __call( $fname, $args ) {
1576                 $realFunction = array( 'Linker', $fname );
1577                 if ( is_callable( $realFunction ) ) {
1578                         return call_user_func_array( $realFunction, $args );
1579                 } else {
1580                         $className = get_class( $this );
1581                         throw new MWException( "Call to undefined method $className::$fname" );
1582                 }
1583         }
1584
1585 }