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 extends ContextSource {
  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                 } elseif ( 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 skin name */
 164         public function getSkinName() {
 165                 return $this->skinname;
 166         }
 167
 168         function initPage( OutputPage $out ) {
 169                 wfProfileIn( __METHOD__ );
 170
 171                 $this->preloadExistence();
 172
 173                 wfProfileOut( __METHOD__ );
 174         }
 175
 176         /**
 177          * Preload the existence of three commonly-requested pages in a single query
 178          */
 179         function preloadExistence() {
 180                 $user = $this->getUser();
 181
 182                 // User/talk link
 183                 $titles = array( $user->getUserPage(), $user->getTalkPage() );
 184
 185                 // Other tab link
 186                 if ( $this->getTitle()->getNamespace() == NS_SPECIAL ) {
 187                         // nothing
 188                 } elseif ( $this->getTitle()->isTalkPage() ) {
 189                         $titles[] = $this->getTitle()->getSubjectPage();
 190                 } else {
 191                         $titles[] = $this->getTitle()->getTalkPage();
 192                 }
 193
 194                 $lb = new LinkBatch( $titles );
 195                 $lb->setCaller( __METHOD__ );
 196                 $lb->execute();
 197         }
 198
 199         /**
 200          * Get the current revision ID
 201          *
 202          * @return Integer
 203          */
 204         public function getRevisionId() {
 205                 return $this->getOutput()->getRevisionId();
 206         }
 207
 208         /**
 209          * Whether the revision displayed is the latest revision of the page
 210          *
 211          * @return Boolean
 212          */
 213         public function isRevisionCurrent() {
 214                 $revID = $this->getRevisionId();
 215                 return $revID == 0 || $revID == $this->getTitle()->getLatestRevID();
 216         }
 217
 218         /**
 219          * Set the "relevant" title
 220          * @see self::getRelevantTitle()
 221          * @param $t Title object to use
 222          */
 223         public function setRelevantTitle( $t ) {
 224                 $this->mRelevantTitle = $t;
 225         }
 226
 227         /**
 228          * Return the "relevant" title.
 229          * A "relevant" title is not necessarily the actual title of the page.
 230          * Special pages like Special:MovePage use set the page they are acting on
 231          * as their "relevant" title, this allows the skin system to display things
 232          * such as content tabs which belong to to that page instead of displaying
 233          * a basic special page tab which has almost no meaning.
 234          *
 235          * @return Title
 236          */
 237         public function getRelevantTitle() {
 238                 if ( isset($this->mRelevantTitle) ) {
 239                         return $this->mRelevantTitle;
 240                 }
 241                 return $this->getTitle();
 242         }
 243
 244         /**
 245          * Set the "relevant" user
 246          * @see self::getRelevantUser()
 247          * @param $u User object to use
 248          */
 249         public function setRelevantUser( $u ) {
 250                 $this->mRelevantUser = $u;
 251         }
 252
 253         /**
 254          * Return the "relevant" user.
 255          * A "relevant" user is similar to a relevant title. Special pages like
 256          * Special:Contributions mark the user which they are relevant to so that
 257          * things like the toolbox can display the information they usually are only
 258          * able to display on a user's userpage and talkpage.
 259          * @return User
 260          */
 261         public function getRelevantUser() {
 262                 if ( isset($this->mRelevantUser) ) {
 263                         return $this->mRelevantUser;
 264                 }
 265                 $title = $this->getRelevantTitle();
 266                 if( $title->getNamespace() == NS_USER || $title->getNamespace() == NS_USER_TALK ) {
 267                         $rootUser = strtok( $title->getText(), '/' );
 268                         if ( User::isIP( $rootUser ) ) {
 269                                 $this->mRelevantUser = User::newFromName( $rootUser, false );
 270                         } else {
 271                                 $user = User::newFromName( $rootUser );
 272                                 if ( $user->isLoggedIn() ) {
 273                                         $this->mRelevantUser = $user;
 274                                 }
 275                         }
 276                         return $this->mRelevantUser;
 277                 }
 278                 return null;
 279         }
 280
 281         /**
 282          * Outputs the HTML generated by other functions.
 283          * @param $out OutputPage
 284          */
 285         abstract function outputPage( OutputPage $out );
 286
 287         static function makeVariablesScript( $data ) {
 288                 if ( $data ) {
 289                         return Html::inlineScript(
 290                                 ResourceLoader::makeLoaderConditionalScript( ResourceLoader::makeConfigSetScript( $data ) )
 291                         );
 292                 } else {
 293                         return '';
 294                 }
 295         }
 296
 297         /**
 298          * Generated JavaScript action=raw&gen=js
 299          * This used to load MediaWiki:Common.js and the skin-specific style
 300          * before the ResourceLoader.
 301          *
 302          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 303          * point.
 304          * @param $skinName String: If set, overrides the skin name
 305          * @return String
 306          */
 307         public function generateUserJs( $skinName = null ) {
 308                 return '';
 309         }
 310
 311         /**
 312          * Generate user stylesheet for action=raw&gen=css
 313          *
 314          * @deprecated since 1.18 Use the ResourceLoader instead. This may be removed at some
 315          * point.
 316          * @return String
 317          */
 318         public function generateUserStylesheet() {
 319                 return '';
 320         }
 321
 322         /**
 323          * Get the query to generate a dynamic stylesheet
 324          *
 325          * @return array
 326          */
 327         public static function getDynamicStylesheetQuery() {
 328                 global $wgSquidMaxage;
 329
 330                 return array(
 331                                 'action' => 'raw',
 332                                 'maxage' => $wgSquidMaxage,
 333                                 'usemsgcache' => 'yes',
 334                                 'ctype' => 'text/css',
 335                                 'smaxage' => $wgSquidMaxage,
 336                         );
 337         }
 338
 339         /**
 340          * Add skin specific stylesheets
 341          * Calling this method with an $out of anything but the same OutputPage
 342          * inside ->getOutput() is deprecated. The $out arg is kept
 343          * for compatibility purposes with skins.
 344          * @param $out OutputPage
 345          * @delete
 346          */
 347         abstract function setupSkinUserCss( OutputPage $out );
 348
 349         /**
 350          * TODO: document
 351          * @param $title Title
 352          * @return String
 353          */
 354         function getPageClasses( $title ) {
 355                 global $wgRequest;
 356                 $numeric = 'ns-' . $title->getNamespace();
 357
 358                 if ( $title->getNamespace() == NS_SPECIAL ) {
 359                         $type = 'ns-special';
 360                         // bug 23315: provide a class based on the canonical special page name without subpages
 361                         list( $canonicalName ) = SpecialPageFactory::resolveAlias( $title->getDBkey() );
 362                         if ( $canonicalName ) {
 363                                 $type .= ' ' . Sanitizer::escapeClass( "mw-special-$canonicalName" );
 364                         } else {
 365                                 $type .= ' mw-invalidspecialpage';
 366                         }
 367                 } elseif ( $title->isTalkPage() ) {
 368                         $type = 'ns-talk';
 369                 } else {
 370                         $type = 'ns-subject';
 371                 }
 372
 373                 $name = Sanitizer::escapeClass( 'page-' . $title->getPrefixedText() );
 374
 375                 if ( $wgRequest->getVal('action') ) {
 376                         $action = 'action-' . $wgRequest->getVal('action');
 377                 } else {
 378                         $action = 'action-view';
 379                 }
 380                 return "$numeric $type $name $action";
 381         }
 382
 383         /**
 384          * This will be called by OutputPage::headElement when it is creating the
 385          * <body> tag, skins can override it if they have a need to add in any
 386          * body attributes or classes of their own.
 387          * @param $out OutputPage
 388          * @param $bodyAttrs Array
 389          */
 390         function addToBodyAttributes( $out, &$bodyAttrs ) {
 391                 // does nothing by default
 392         }
 393
 394         /**
 395          * URL to the logo
 396          * @return String
 397          */
 398         function getLogo() {
 399                 global $wgLogo;
 400                 return $wgLogo;
 401         }
 402
 403         function getCategoryLinks() {
 404                 global $wgUseCategoryBrowser;
 405
 406                 $out = $this->getOutput();
 407                 $allCats = $out->getCategoryLinks();
 408
 409                 if ( !count( $allCats ) ) {
 410                         return '';
 411                 }
 412
 413                 $embed = "<li>";
 414                 $pop = "</li>";
 415
 416                 $s = '';
 417                 $colon = wfMsgExt( 'colon-separator', 'escapenoentities' );
 418
 419                 if ( !empty( $allCats['normal'] ) ) {
 420                         $t = $embed . implode( "{$pop}{$embed}" , $allCats['normal'] ) . $pop;
 421
 422                         $msg = wfMsgExt( 'pagecategories', array( 'parsemag', 'escapenoentities' ), count( $allCats['normal'] ) );
 423                         $s .= '<div id="mw-normal-catlinks">' .
 424                                 Linker::link( Title::newFromText( wfMsgForContent( 'pagecategorieslink' ) ), $msg )
 425                                 . $colon . '<ul>' . $t . '</ul>' . '</div>';
 426                 }
 427
 428                 # Hidden categories
 429                 if ( isset( $allCats['hidden'] ) ) {
 430                         if ( $this->getUser()->getBoolOption( 'showhiddencats' ) ) {
 431                                 $class = 'mw-hidden-cats-user-shown';
 432                         } elseif ( $this->getTitle()->getNamespace() == NS_CATEGORY ) {
 433                                 $class = 'mw-hidden-cats-ns-shown';
 434                         } else {
 435                                 $class = 'mw-hidden-cats-hidden';
 436                         }
 437
 438                         $s .= "<div id=\"mw-hidden-catlinks\" class=\"$class\">" .
 439                                 wfMsgExt( 'hidden-categories', array( 'parsemag', 'escapenoentities' ), count( $allCats['hidden'] ) ) .
 440                                 $colon . '<ul>' . $embed . implode( "{$pop}{$embed}" , $allCats['hidden'] ) . $pop . '</ul>' .
 441                                 '</div>';
 442                 }
 443
 444                 # optional 'dmoz-like' category browser. Will be shown under the list
 445                 # of categories an article belong to
 446                 if ( $wgUseCategoryBrowser ) {
 447                         $s .= '<br /><hr />';
 448
 449                         # get a big array of the parents tree
 450                         $parenttree = $this->getTitle()->getParentCategoryTree();
 451                         # Skin object passed by reference cause it can not be
 452                         # accessed under the method subfunction drawCategoryBrowser
 453                         $tempout = explode( "\n", $this->drawCategoryBrowser( $parenttree ) );
 454                         # Clean out bogus first entry and sort them
 455                         unset( $tempout[0] );
 456                         asort( $tempout );
 457                         # Output one per line
 458                         $s .= implode( "<br />\n", $tempout );
 459                 }
 460
 461                 return $s;
 462         }
 463
 464         /**
 465          * Render the array as a serie of links.
 466          * @param $tree Array: categories tree returned by Title::getParentCategoryTree
 467          * @return String separated by &gt;, terminate with "\n"
 468          */
 469         function drawCategoryBrowser( $tree ) {
 470                 $return = '';
 471
 472                 foreach ( $tree as $element => $parent ) {
 473                         if ( empty( $parent ) ) {
 474                                 # element start a new list
 475                                 $return .= "\n";
 476                         } else {
 477                                 # grab the others elements
 478                                 $return .= $this->drawCategoryBrowser( $parent ) . ' &gt; ';
 479                         }
 480
 481                         # add our current element to the list
 482                         $eltitle = Title::newFromText( $element );
 483                         $return .=  Linker::link( $eltitle, htmlspecialchars( $eltitle->getText() ) );
 484                 }
 485
 486                 return $return;
 487         }
 488
 489         function getCategories() {
 490                 $out = $this->getOutput();
 491
 492                 $catlinks = $this->getCategoryLinks();
 493
 494                 $classes = 'catlinks';
 495
 496                 // Check what we're showing
 497                 $allCats = $out->getCategoryLinks();
 498                 $showHidden = $this->getUser()->getBoolOption( 'showhiddencats' ) ||
 499                                                 $this->getTitle()->getNamespace() == NS_CATEGORY;
 500
 501                 if ( empty( $allCats['normal'] ) && !( !empty( $allCats['hidden'] ) && $showHidden ) ) {
 502                         $classes .= ' catlinks-allhidden';
 503                 }
 504
 505                 return "<div id='catlinks' class='$classes'>{$catlinks}</div>";
 506         }
 507
 508         /**
 509          * This runs a hook to allow extensions placing their stuff after content
 510          * and article metadata (e.g. categories).
 511          * Note: This function has nothing to do with afterContent().
 512          *
 513          * This hook is placed here in order to allow using the same hook for all
 514          * skins, both the SkinTemplate based ones and the older ones, which directly
 515          * use this class to get their data.
 516          *
 517          * The output of this function gets processed in SkinTemplate::outputPage() for
 518          * the SkinTemplate based skins, all other skins should directly echo it.
 519          *
 520          * @return String, empty by default, if not changed by any hook function.
 521          */
 522         protected function afterContentHook() {
 523                 $data = '';
 524
 525                 if ( wfRunHooks( 'SkinAfterContent', array( &$data, $this ) ) ) {
 526                         // adding just some spaces shouldn't toggle the output
 527                         // of the whole <div/>, so we use trim() here
 528                         if ( trim( $data ) != '' ) {
 529                                 // Doing this here instead of in the skins to
 530                                 // ensure that the div has the same ID in all
 531                                 // skins
 532                                 $data = "<div id='mw-data-after-content'>\n" .
 533                                         "\t$data\n" .
 534                                         "</div>\n";
 535                         }
 536                 } else {
 537                         wfDebug( "Hook SkinAfterContent changed output processing.\n" );
 538                 }
 539
 540                 return $data;
 541         }
 542
 543         /**
 544          * Generate debug data HTML for displaying at the bottom of the main content
 545          * area.
 546          * @return String HTML containing debug data, if enabled (otherwise empty).
 547          */
 548         protected function generateDebugHTML() {
 549                 global $wgShowDebug;
 550
 551                 if ( $wgShowDebug ) {
 552                         $listInternals = $this->formatDebugHTML( $this->getOutput()->mDebugtext );
 553                         return "\n<hr />\n<strong>Debug data:</strong><ul id=\"mw-debug-html\">" .
 554                                 $listInternals . "</ul>\n";
 555                 }
 556
 557                 return '';
 558         }
 559
 560         private function formatDebugHTML( $debugText ) {
 561                 global $wgDebugTimestamps;
 562
 563                 $lines = explode( "\n", $debugText );
 564                 $curIdent = 0;
 565                 $ret = '<li>';
 566
 567                 foreach ( $lines as $line ) {
 568                         $pre = '';
 569                         if ( $wgDebugTimestamps ) {
 570                                 $matches = array();
 571                                 if ( preg_match( '/^(\d+\.\d+\s{2})/', $line, $matches ) ) {
 572                                         $pre = $matches[1];
 573                                         $line = substr( $line, strlen( $pre ) );
 574                                 }
 575                         }
 576                         $display = ltrim( $line );
 577                         $ident = strlen( $line ) - strlen( $display );
 578                         $diff = $ident - $curIdent;
 579
 580                         $display = $pre . $display;
 581                         if ( $display == '' ) {
 582                                 $display = "\xc2\xa0";
 583                         }
 584
 585                         if ( !$ident && $diff < 0 && substr( $display, 0, 9 ) != 'Entering ' && substr( $display, 0, 8 ) != 'Exiting ' ) {
 586                                 $ident = $curIdent;
 587                                 $diff = 0;
 588                                 $display = '<span style="background:yellow;">' . htmlspecialchars( $display ) . '</span>';
 589                         } else {
 590                                 $display = htmlspecialchars( $display );
 591                         }
 592
 593                         if ( $diff < 0 ) {
 594                                 $ret .= str_repeat( "</li></ul>\n", -$diff ) . "</li><li>\n";
 595                         } elseif ( $diff == 0 ) {
 596                                 $ret .= "</li><li>\n";
 597                         } else {
 598                                 $ret .= str_repeat( "<ul><li>\n", $diff );
 599                         }
 600                         $ret .= "<tt>$display</tt>\n";
 601
 602                         $curIdent = $ident;
 603                 }
 604
 605                 $ret .= str_repeat( '</li></ul>', $curIdent ) . '</li>';
 606
 607                 return $ret;
 608         }
 609
 610         /**
 611          * This gets called shortly before the </body> tag.
 612          *
 613          * @return String HTML-wrapped JS code to be put before </body>
 614          */
 615         function bottomScripts() {
 616                 // TODO and the suckage continues. This function is really just a wrapper around
 617                 // OutputPage::getBottomScripts() which takes a Skin param. This should be cleaned
 618                 // up at some point
 619                 $bottomScriptText = $this->getOutput()->getBottomScripts();
 620                 wfRunHooks( 'SkinAfterBottomScripts', array( $this, &$bottomScriptText ) );
 621
 622                 return $bottomScriptText;
 623         }
 624
 625         /** @return string Retrievied from HTML text */
 626         function printSource() {
 627                 $url = htmlspecialchars( $this->getTitle()->getFullURL() );
 628                 return wfMsg( 'retrievedfrom', '<a href="' . $url . '">' . $url . '</a>' );
 629         }
 630
 631         function getUndeleteLink() {
 632                 $action = $this->getRequest()->getVal( 'action', 'view' );
 633
 634                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) && !$this->getUser()->isBlocked() &&
 635                         ( $this->getTitle()->getArticleId() == 0 || $action == 'history' ) ) {
 636
 637                         $includeSuppressed = $this->getUser()->isAllowed( 'suppressrevision' );
 638                         $n = $this->getTitle()->isDeleted( $includeSuppressed );
 639
 640                         if ( $n ) {
 641                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 642                                         $msg = 'thisisdeleted';
 643                                 } else {
 644                                         $msg = 'viewdeleted';
 645                                 }
 646
 647                                 return wfMsg(
 648                                         $msg,
 649                                         Linker::linkKnown(
 650                                                 SpecialPage::getTitleFor( 'Undelete', $this->getTitle()->getPrefixedDBkey() ),
 651                                                 wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $this->getLang()->formatNum( $n ) )
 652                                         )
 653                                 );
 654                         }
 655                 }
 656
 657                 return '';
 658         }
 659
 660         function subPageSubtitle() {
 661                 $out = $this->getOutput();
 662                 $subpages = '';
 663
 664                 if ( !wfRunHooks( 'SkinSubPageSubtitle', array( &$subpages, $this, $out ) ) ) {
 665                         return $subpages;
 666                 }
 667
 668                 if ( $out->isArticle() && MWNamespace::hasSubpages( $out->getTitle()->getNamespace() ) ) {
 669                         $ptext = $this->getTitle()->getPrefixedText();
 670                         if ( preg_match( '/\//', $ptext ) ) {
 671                                 $links = explode( '/', $ptext );
 672                                 array_pop( $links );
 673                                 $c = 0;
 674                                 $growinglink = '';
 675                                 $display = '';
 676
 677                                 foreach ( $links as $link ) {
 678                                         $growinglink .= $link;
 679                                         $display .= $link;
 680                                         $linkObj = Title::newFromText( $growinglink );
 681
 682                                         if ( is_object( $linkObj ) && $linkObj->exists() ) {
 683                                                 $getlink = Linker::linkKnown(
 684                                                         $linkObj,
 685                                                         htmlspecialchars( $display )
 686                                                 );
 687
 688                                                 $c++;
 689
 690                                                 if ( $c > 1 ) {
 691                                                         $subpages .= wfMsgExt( 'pipe-separator', 'escapenoentities' );
 692                                                 } else  {
 693                                                         $subpages .= '&lt; ';
 694                                                 }
 695
 696                                                 $subpages .= $getlink;
 697                                                 $display = '';
 698                                         } else {
 699                                                 $display .= '/';
 700                                         }
 701                                         $growinglink .= '/';
 702                                 }
 703                         }
 704                 }
 705
 706                 return $subpages;
 707         }
 708
 709         /**
 710          * Returns true if the IP should be shown in the header
 711          * @return Bool
 712          */
 713         function showIPinHeader() {
 714                 global $wgShowIPinHeader;
 715                 return $wgShowIPinHeader && session_id() != '';
 716         }
 717
 718         function getSearchLink() {
 719                 $searchPage = SpecialPage::getTitleFor( 'Search' );
 720                 return $searchPage->getLocalURL();
 721         }
 722
 723         function escapeSearchLink() {
 724                 return htmlspecialchars( $this->getSearchLink() );
 725         }
 726
 727         function getCopyright( $type = 'detect' ) {
 728                 global $wgRightsPage, $wgRightsUrl, $wgRightsText;
 729
 730                 if ( $type == 'detect' ) {
 731                         if ( !$this->isRevisionCurrent() && wfMsgForContent( 'history_copyright' ) !== '-' ) {
 732                                 $type = 'history';
 733                         } else {
 734                                 $type = 'normal';
 735                         }
 736                 }
 737
 738                 if ( $type == 'history' ) {
 739                         $msg = 'history_copyright';
 740                 } else {
 741                         $msg = 'copyright';
 742                 }
 743
 744                 if ( $wgRightsPage ) {
 745                         $title = Title::newFromText( $wgRightsPage );
 746                         $link = Linker::linkKnown( $title, $wgRightsText );
 747                 } elseif ( $wgRightsUrl ) {
 748                         $link = Linker::makeExternalLink( $wgRightsUrl, $wgRightsText );
 749                 } elseif ( $wgRightsText ) {
 750                         $link = $wgRightsText;
 751                 } else {
 752                         # Give up now
 753                         return '';
 754                 }
 755
 756                 // Allow for site and per-namespace customization of copyright notice.
 757                 $forContent = true;
 758
 759                 wfRunHooks( 'SkinCopyrightFooter', array( $this->getTitle(), $type, &$msg, &$link, &$forContent ) );
 760
 761                 if ( $forContent ) {
 762                         return wfMsgForContent( $msg, $link );
 763                 } else {
 764                         return wfMsg( $msg, $link );
 765                 }
 766         }
 767
 768         function getCopyrightIcon() {
 769                 global $wgRightsUrl, $wgRightsText, $wgRightsIcon, $wgCopyrightIcon;
 770
 771                 $out = '';
 772
 773                 if ( isset( $wgCopyrightIcon ) && $wgCopyrightIcon ) {
 774                         $out = $wgCopyrightIcon;
 775                 } elseif ( $wgRightsIcon ) {
 776                         $icon = htmlspecialchars( $wgRightsIcon );
 777
 778                         if ( $wgRightsUrl ) {
 779                                 $url = htmlspecialchars( $wgRightsUrl );
 780                                 $out .= '<a href="' . $url . '">';
 781                         }
 782
 783                         $text = htmlspecialchars( $wgRightsText );
 784                         $out .= "<img src=\"$icon\" alt=\"$text\" width=\"88\" height=\"31\" />";
 785
 786                         if ( $wgRightsUrl ) {
 787                                 $out .= '</a>';
 788                         }
 789                 }
 790
 791                 return $out;
 792         }
 793
 794         /**
 795          * Gets the powered by MediaWiki icon.
 796          * @return string
 797          */
 798         function getPoweredBy() {
 799                 global $wgStylePath;
 800
 801                 $url = htmlspecialchars( "$wgStylePath/common/images/poweredby_mediawiki_88x31.png" );
 802                 $text = '<a href="http://www.mediawiki.org/"><img src="' . $url . '" height="31" width="88" alt="Powered by MediaWiki" /></a>';
 803                 wfRunHooks( 'SkinGetPoweredBy', array( &$text, $this ) );
 804                 return $text;
 805         }
 806
 807         /**
 808          * Get the timestamp of the latest revision, formatted in user language
 809          *
 810          * @param $article Article object. Used if we're working with the current revision
 811          * @return String
 812          */
 813         protected function lastModified( $article ) {
 814                 if ( !$this->isRevisionCurrent() ) {
 815                         $timestamp = Revision::getTimestampFromId( $this->getTitle(), $this->getRevisionId() );
 816                 } else {
 817                         $timestamp = $article->getTimestamp();
 818                 }
 819
 820                 if ( $timestamp ) {
 821                         $d = $this->getLang()->date( $timestamp, true );
 822                         $t = $this->getLang()->time( $timestamp, true );
 823                         $s = ' ' . wfMsg( 'lastmodifiedat', $d, $t );
 824                 } else {
 825                         $s = '';
 826                 }
 827
 828                 if ( wfGetLB()->getLaggedSlaveMode() ) {
 829                         $s .= ' <strong>' . wfMsg( 'laggedslavemode' ) . '</strong>';
 830                 }
 831
 832                 return $s;
 833         }
 834
 835         function logoText( $align = '' ) {
 836                 if ( $align != '' ) {
 837                         $a = " align='{$align}'";
 838                 } else {
 839                         $a = '';
 840                 }
 841
 842                 $mp = wfMsgHtml( 'mainpage' );
 843                 $mptitle = Title::newMainPage();
 844                 $url = ( is_object( $mptitle ) ? $mptitle->escapeLocalURL() : '' );
 845
 846                 $logourl = $this->getLogo();
 847                 $s = "<a href='{$url}'><img{$a} src='{$logourl}' alt='[{$mp}]' /></a>";
 848
 849                 return $s;
 850         }
 851
 852         /**
 853          * Renders a $wgFooterIcons icon acording to the method's arguments
 854          * @param $icon Array: The icon to build the html for, see $wgFooterIcons for the format of this array
 855          * @param $withImage Bool|String: Whether to use the icon's image or output a text-only footericon
 856          * @return String HTML
 857          */
 858         function makeFooterIcon( $icon, $withImage = 'withImage' ) {
 859                 if ( is_string( $icon ) ) {
 860                         $html = $icon;
 861                 } else { // Assuming array
 862                         $url = isset($icon["url"]) ? $icon["url"] : null;
 863                         unset( $icon["url"] );
 864                         if ( isset( $icon["src"] ) && $withImage === 'withImage' ) {
 865                                 $html = Html::element( 'img', $icon ); // do this the lazy way, just pass icon data as an attribute array
 866                         } else {
 867                                 $html = htmlspecialchars( $icon["alt"] );
 868                         }
 869                         if ( $url ) {
 870                                 $html = Html::rawElement( 'a', array( "href" => $url ), $html );
 871                         }
 872                 }
 873                 return $html;
 874         }
 875
 876         /**
 877          * Gets the link to the wiki's main page.
 878          * @return string
 879          */
 880         function mainPageLink() {
 881                 $s = Linker::linkKnown(
 882                         Title::newMainPage(),
 883                         wfMsgHtml( 'mainpage' )
 884                 );
 885
 886                 return $s;
 887         }
 888
 889         public function footerLink( $desc, $page ) {
 890                 // if the link description has been set to "-" in the default language,
 891                 if ( wfMsgForContent( $desc )  == '-' ) {
 892                         // then it is disabled, for all languages.
 893                         return '';
 894                 } else {
 895                         // Otherwise, we display the link for the user, described in their
 896                         // language (which may or may not be the same as the default language),
 897                         // but we make the link target be the one site-wide page.
 898                         $title = Title::newFromText( wfMsgForContent( $page ) );
 899
 900                         return Linker::linkKnown(
 901                                 $title,
 902                                 wfMsgExt( $desc, array( 'parsemag', 'escapenoentities' ) )
 903                         );
 904                 }
 905         }
 906
 907         /**
 908          * Gets the link to the wiki's privacy policy page.
 909          * @return String HTML
 910          */
 911         function privacyLink() {
 912                 return $this->footerLink( 'privacy', 'privacypage' );
 913         }
 914
 915         /**
 916          * Gets the link to the wiki's about page.
 917          * @return String HTML
 918          */
 919         function aboutLink() {
 920                 return $this->footerLink( 'aboutsite', 'aboutpage' );
 921         }
 922
 923         /**
 924          * Gets the link to the wiki's general disclaimers page.
 925          * @return String HTML
 926          */
 927         function disclaimerLink() {
 928                 return $this->footerLink( 'disclaimers', 'disclaimerpage' );
 929         }
 930
 931         /**
 932          * Return URL options for the 'edit page' link.
 933          * This may include an 'oldid' specifier, if the current page view is such.
 934          *
 935          * @return array
 936          * @private
 937          */
 938         function editUrlOptions() {
 939                 $options = array( 'action' => 'edit' );
 940
 941                 if ( !$this->isRevisionCurrent() ) {
 942                         $options['oldid'] = intval( $this->getRevisionId() );
 943                 }
 944
 945                 return $options;
 946         }
 947
 948         function showEmailUser( $id ) {
 949                 $targetUser = User::newFromId( $id );
 950                 return $this->getUser()->canSendEmail() && # the sending user must have a confirmed email address
 951                         $targetUser->canReceiveEmail(); # the target user must have a confirmed email address and allow emails from users
 952         }
 953
 954         /**
 955          * Return a fully resolved style path url to images or styles stored in the common folder.
 956          * This method returns a url resolved using the configured skin style path
 957          * and includes the style version inside of the url.
 958          * @param $name String: The name or path of a skin resource file
 959          * @return String The fully resolved style path url including styleversion
 960          */
 961         function getCommonStylePath( $name ) {
 962                 global $wgStylePath, $wgStyleVersion;
 963                 return "$wgStylePath/common/$name?$wgStyleVersion";
 964         }
 965
 966         /**
 967          * Return a fully resolved style path url to images or styles stored in the curent skins's folder.
 968          * This method returns a url resolved using the configured skin style path
 969          * and includes the style version inside of the url.
 970          * @param $name String: The name or path of a skin resource file
 971          * @return String The fully resolved style path url including styleversion
 972          */
 973         function getSkinStylePath( $name ) {
 974                 global $wgStylePath, $wgStyleVersion;
 975                 return "$wgStylePath/{$this->stylename}/$name?$wgStyleVersion";
 976         }
 977
 978         /* these are used extensively in SkinTemplate, but also some other places */
 979         static function makeMainPageUrl( $urlaction = '' ) {
 980                 $title = Title::newMainPage();
 981                 self::checkTitle( $title, '' );
 982
 983                 return $title->getLocalURL( $urlaction );
 984         }
 985
 986         static function makeSpecialUrl( $name, $urlaction = '' ) {
 987                 $title = SpecialPage::getSafeTitleFor( $name );
 988                 return $title->getLocalURL( $urlaction );
 989         }
 990
 991         static function makeSpecialUrlSubpage( $name, $subpage, $urlaction = '' ) {
 992                 $title = SpecialPage::getSafeTitleFor( $name, $subpage );
 993                 return $title->getLocalURL( $urlaction );
 994         }
 995
 996         static function makeI18nUrl( $name, $urlaction = '' ) {
 997                 $title = Title::newFromText( wfMsgForContent( $name ) );
 998                 self::checkTitle( $title, $name );
 999                 return $title->getLocalURL( $urlaction );
1000         }
1001
1002         static function makeUrl( $name, $urlaction = '' ) {
1003                 $title = Title::newFromText( $name );
1004                 self::checkTitle( $title, $name );
1005
1006                 return $title->getLocalURL( $urlaction );
1007         }
1008
1009         /**
1010          * If url string starts with http, consider as external URL, else
1011          * internal
1012          * @param $name String
1013          * @return String URL
1014          */
1015         static function makeInternalOrExternalUrl( $name ) {
1016                 if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $name ) ) {
1017                         return $name;
1018                 } else {
1019                         return self::makeUrl( $name );
1020                 }
1021         }
1022
1023         # this can be passed the NS number as defined in Language.php
1024         static function makeNSUrl( $name, $urlaction = '', $namespace = NS_MAIN ) {
1025                 $title = Title::makeTitleSafe( $namespace, $name );
1026                 self::checkTitle( $title, $name );
1027
1028                 return $title->getLocalURL( $urlaction );
1029         }
1030
1031         /* these return an array with the 'href' and boolean 'exists' */
1032         static function makeUrlDetails( $name, $urlaction = '' ) {
1033                 $title = Title::newFromText( $name );
1034                 self::checkTitle( $title, $name );
1035
1036                 return array(
1037                         'href' => $title->getLocalURL( $urlaction ),
1038                         'exists' => $title->getArticleID() != 0,
1039                 );
1040         }
1041
1042         /**
1043          * Make URL details where the article exists (or at least it's convenient to think so)
1044          * @param $name String Article name
1045          * @param $urlaction String
1046          * @return Array
1047          */
1048         static function makeKnownUrlDetails( $name, $urlaction = '' ) {
1049                 $title = Title::newFromText( $name );
1050                 self::checkTitle( $title, $name );
1051
1052                 return array(
1053                         'href' => $title->getLocalURL( $urlaction ),
1054                         'exists' => true
1055                 );
1056         }
1057
1058         # make sure we have some title to operate on
1059         static function checkTitle( &$title, $name ) {
1060                 if ( !is_object( $title ) ) {
1061                         $title = Title::newFromText( $name );
1062                         if ( !is_object( $title ) ) {
1063                                 $title = Title::newFromText( '--error: link target missing--' );
1064                         }
1065                 }
1066         }
1067
1068         /**
1069          * Build an array that represents the sidebar(s), the navigation bar among them
1070          *
1071          * @return array
1072          */
1073         function buildSidebar() {
1074                 global $parserMemc, $wgEnableSidebarCache, $wgSidebarCacheExpiry;
1075                 wfProfileIn( __METHOD__ );
1076
1077                 $key = wfMemcKey( 'sidebar', $this->getLang()->getCode() );
1078
1079                 if ( $wgEnableSidebarCache ) {
1080                         $cachedsidebar = $parserMemc->get( $key );
1081                         if ( $cachedsidebar ) {
1082                                 wfProfileOut( __METHOD__ );
1083                                 return $cachedsidebar;
1084                         }
1085                 }
1086
1087                 $bar = array();
1088                 $this->addToSidebar( $bar, 'sidebar' );
1089
1090                 wfRunHooks( 'SkinBuildSidebar', array( $this, &$bar ) );
1091                 if ( $wgEnableSidebarCache ) {
1092                         $parserMemc->set( $key, $bar, $wgSidebarCacheExpiry );
1093                 }
1094
1095                 wfProfileOut( __METHOD__ );
1096                 return $bar;
1097         }
1098         /**
1099          * Add content from a sidebar system message
1100          * Currently only used for MediaWiki:Sidebar (but may be used by Extensions)
1101          *
1102          * This is just a wrapper around addToSidebarPlain() for backwards compatibility
1103          *
1104          * @param &$bar array
1105          * @param $message String
1106          */
1107         function addToSidebar( &$bar, $message ) {
1108                 $this->addToSidebarPlain( $bar, wfMsgForContentNoTrans( $message ) );
1109         }
1110
1111         /**
1112          * Add content from plain text
1113          * @since 1.17
1114          * @param &$bar array
1115          * @param $text string
1116          * @return Array
1117          */
1118         function addToSidebarPlain( &$bar, $text ) {
1119                 $lines = explode( "\n", $text );
1120                 $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.
1121
1122                 $heading = '';
1123
1124                 foreach ( $lines as $line ) {
1125                         if ( strpos( $line, '*' ) !== 0 ) {
1126                                 continue;
1127                         }
1128
1129                         if ( strpos( $line, '**' ) !== 0 ) {
1130                                 $heading = trim( $line, '* ' );
1131                                 if ( !array_key_exists( $heading, $bar ) ) {
1132                                         $bar[$heading] = array();
1133                                 }
1134                         } else {
1135                                 $line = trim( $line, '* ' );
1136
1137                                 if ( strpos( $line, '|' ) !== false ) { // sanity check
1138                                         $line = MessageCache::singleton()->transform( $line, false, null, $this->getTitle() );
1139                                         $line = array_map( 'trim', explode( '|', $line, 2 ) );
1140                                         $extraAttribs = array();
1141
1142                                         $msgLink = wfMessage( $line[0] )->inContentLanguage();
1143                                         if ( $msgLink->exists() ) {
1144                                                 $link = $msgLink->text();
1145                                                 if ( $link == '-' ) {
1146                                                         continue;
1147                                                 }
1148                                         } else {
1149                                                 $link = $line[0];
1150                                         }
1151
1152                                         $msgText = wfMessage( $line[1] );
1153                                         if ( $msgText->exists() ) {
1154                                                 $text = $msgText->text();
1155                                         } else {
1156                                                 $text = $line[1];
1157                                         }
1158
1159                                         if ( preg_match( '/^(?:' . wfUrlProtocols() . ')/', $link ) ) {
1160                                                 $href = $link;
1161                                                 //Parser::getExternalLinkAttribs won't work here because of the Namespace things
1162                                                 global $wgNoFollowLinks;
1163                                                 if ( $wgNoFollowLinks ) {
1164                                                         $extraAttribs['rel'] = 'nofollow';
1165
1166                                                         global $wgNoFollowDomainExceptions;
1167                                                         if ( $wgNoFollowDomainExceptions ) {
1168                                                                 $bits = wfParseUrl( $url );
1169                                                                 if ( is_array( $bits ) && isset( $bits['host'] ) ) {
1170                                                                         foreach ( $wgNoFollowDomainExceptions as $domain ) {
1171                                                                                 if ( substr( $bits['host'], -strlen( $domain ) ) == $domain ) {
1172                                                                                         unset( $extraAttribs['rel'] );
1173                                                                                         break;
1174                                                                                 }
1175                                                                         }
1176                                                                 }
1177                                                         }
1178                                                 }
1179                                                 global $wgExternalLinkTarget;
1180                                                 if ( $wgExternalLinkTarget) {
1181                                                         $extraAttribs['target'] = $wgExternalLinkTarget;
1182                                                 }
1183                                         } else {
1184                                                 $title = Title::newFromText( $link );
1185
1186                                                 if ( $title ) {
1187                                                         $title = $title->fixSpecialName();
1188                                                         $href = $title->getLocalURL();
1189                                                 } else {
1190                                                         $href = 'INVALID-TITLE';
1191                                                 }
1192                                         }
1193
1194                                         $bar[$heading][] = array_merge( array(
1195                                                 'text' => $text,
1196                                                 'href' => $href,
1197                                                 'id' => 'n-' . Sanitizer::escapeId( strtr( $line[1], ' ', '-' ), 'noninitial' ),
1198                                                 'active' => false
1199                                         ), $extraAttribs );
1200                                 } elseif ( ( substr( $line, 0, 2 ) == '{{' ) && ( substr( $line, -2 ) == '}}' ) ) {
1201                                         global $wgParser;
1202
1203                                         $line = substr( $line, 2, strlen( $line ) - 4 );
1204
1205                                         $options = new ParserOptions();
1206                                         $options->setEditSection( false );
1207                                         $options->setInterfaceMessage( true );
1208                                         $wikiBar[$heading] = $wgParser->parse( wfMsgForContentNoTrans( $line ) , $this->getTitle(), $options )->getText();
1209                                 } else {
1210                                         continue;
1211                                 }
1212                         }
1213                 }
1214
1215                 if ( count( $wikiBar ) > 0 ) {
1216                         $bar = array_merge( $bar, $wikiBar );
1217                 }
1218
1219                 return $bar;
1220         }
1221
1222         /**
1223          * Should we include common/wikiprintable.css?  Skins that have their own
1224          * print stylesheet should override this and return false.  (This is an
1225          * ugly hack to get Monobook to play nicely with
1226          * OutputPage::headElement().)
1227          *
1228          * @return bool
1229          */
1230         public function commonPrintStylesheet() {
1231                 return true;
1232         }
1233
1234         /**
1235          * Gets new talk page messages for the current user.
1236          * @return MediaWiki message or if no new talk page messages, nothing
1237          */
1238         function getNewtalks() {
1239                 $out = $this->getOutput();
1240
1241                 $newtalks = $this->getUser()->getNewMessageLinks();
1242                 $ntl = '';
1243
1244                 if ( count( $newtalks ) == 1 && $newtalks[0]['wiki'] === wfWikiID() ) {
1245                         $userTitle = $this->getUser()->getUserPage();
1246                         $userTalkTitle = $userTitle->getTalkPage();
1247
1248                         if ( !$userTalkTitle->equals( $out->getTitle() ) ) {
1249                                 $newMessagesLink = Linker::linkKnown(
1250                                         $userTalkTitle,
1251                                         wfMsgHtml( 'newmessageslink' ),
1252                                         array(),
1253                                         array( 'redirect' => 'no' )
1254                                 );
1255
1256                                 $newMessagesDiffLink = Linker::linkKnown(
1257                                         $userTalkTitle,
1258                                         wfMsgHtml( 'newmessagesdifflink' ),
1259                                         array(),
1260                                         array( 'diff' => 'cur' )
1261                                 );
1262
1263                                 $ntl = wfMsg(
1264                                         'youhavenewmessages',
1265                                         $newMessagesLink,
1266                                         $newMessagesDiffLink
1267                                 );
1268                                 # Disable Squid cache
1269                                 $out->setSquidMaxage( 0 );
1270                         }
1271                 } elseif ( count( $newtalks ) ) {
1272                         // _>" " for BC <= 1.16
1273                         $sep = str_replace( '_', ' ', wfMsgHtml( 'newtalkseparator' ) );
1274                         $msgs = array();
1275
1276                         foreach ( $newtalks as $newtalk ) {
1277                                 $msgs[] = Xml::element(
1278                                         'a',
1279                                         array( 'href' => $newtalk['link'] ), $newtalk['wiki']
1280                                 );
1281                         }
1282                         $parts = implode( $sep, $msgs );
1283                         $ntl = wfMsgHtml( 'youhavenewmessagesmulti', $parts );
1284                         $out->setSquidMaxage( 0 );
1285                 }
1286
1287                 return $ntl;
1288         }
1289
1290         /**
1291          * Get a cached notice
1292          *
1293          * @param $name String: message name, or 'default' for $wgSiteNotice
1294          * @return String: HTML fragment
1295          */
1296         private function getCachedNotice( $name ) {
1297                 global $wgRenderHashAppend, $parserMemc, $wgContLang;
1298
1299                 wfProfileIn( __METHOD__ );
1300
1301                 $needParse = false;
1302
1303                 if( $name === 'default' ) {
1304                         // special case
1305                         global $wgSiteNotice;
1306                         $notice = $wgSiteNotice;
1307                         if( empty( $notice ) ) {
1308                                 wfProfileOut( __METHOD__ );
1309                                 return false;
1310                         }
1311                 } else {
1312                         $msg = wfMessage( $name )->inContentLanguage();
1313                         if( $msg->isDisabled() ) {
1314                                 wfProfileOut( __METHOD__ );
1315                                 return false;
1316                         }
1317                         $notice = $msg->plain();
1318                 }
1319
1320                 // Use the extra hash appender to let eg SSL variants separately cache.
1321                 $key = wfMemcKey( $name . $wgRenderHashAppend );
1322                 $cachedNotice = $parserMemc->get( $key );
1323                 if( is_array( $cachedNotice ) ) {
1324                         if( md5( $notice ) == $cachedNotice['hash'] ) {
1325                                 $notice = $cachedNotice['html'];
1326                         } else {
1327                                 $needParse = true;
1328                         }
1329                 } else {
1330                         $needParse = true;
1331                 }
1332
1333                 if ( $needParse ) {
1334                         $parsed = $this->getOutput()->parse( $notice );
1335                         $parserMemc->set( $key, array( 'html' => $parsed, 'hash' => md5( $notice ) ), 600 );
1336                         $notice = $parsed;
1337                 }
1338
1339                 $notice = Html::rawElement( 'div', array( 'id' => 'localNotice',
1340                         'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ), $notice );
1341                 wfProfileOut( __METHOD__ );
1342                 return $notice;
1343         }
1344
1345         /**
1346          * Get a notice based on page's namespace
1347          *
1348          * @return String: HTML fragment
1349          */
1350         function getNamespaceNotice() {
1351                 wfProfileIn( __METHOD__ );
1352
1353                 $key = 'namespacenotice-' . $this->getTitle()->getNsText();
1354                 $namespaceNotice = $this->getCachedNotice( $key );
1355                 if ( $namespaceNotice && substr( $namespaceNotice, 0, 7 ) != '<p>&lt;' ) {
1356                         $namespaceNotice = '<div id="namespacebanner">' . $namespaceNotice . '</div>';
1357                 } else {
1358                         $namespaceNotice = '';
1359                 }
1360
1361                 wfProfileOut( __METHOD__ );
1362                 return $namespaceNotice;
1363         }
1364
1365         /**
1366          * Get the site notice
1367          *
1368          * @return String: HTML fragment
1369          */
1370         function getSiteNotice() {
1371                 wfProfileIn( __METHOD__ );
1372                 $siteNotice = '';
1373
1374                 if ( wfRunHooks( 'SiteNoticeBefore', array( &$siteNotice, $this ) ) ) {
1375                         if ( is_object( $this->getUser() ) && $this->getUser()->isLoggedIn() ) {
1376                                 $siteNotice = $this->getCachedNotice( 'sitenotice' );
1377                         } else {
1378                                 $anonNotice = $this->getCachedNotice( 'anonnotice' );
1379                                 if ( !$anonNotice ) {
1380                                         $siteNotice = $this->getCachedNotice( 'sitenotice' );
1381                                 } else {
1382                                         $siteNotice = $anonNotice;
1383                                 }
1384                         }
1385                         if ( !$siteNotice ) {
1386                                 $siteNotice = $this->getCachedNotice( 'default' );
1387                         }
1388                 }
1389
1390                 wfRunHooks( 'SiteNoticeAfter', array( &$siteNotice, $this ) );
1391                 wfProfileOut( __METHOD__ );
1392                 return $siteNotice;
1393         }
1394
1395         /**
1396          * Create a section edit link.  This supersedes editSectionLink() and
1397          * editSectionLinkForOther().
1398          *
1399          * @param $nt      Title  The title being linked to (may not be the same as
1400          *   $wgTitle, if the section is included from a template)
1401          * @param $section string The designation of the section being pointed to,
1402          *   to be included in the link, like "&section=$section"
1403          * @param $tooltip string The tooltip to use for the link: will be escaped
1404          *   and wrapped in the 'editsectionhint' message
1405          * @param $lang    string Language code
1406          * @return         string HTML to use for edit link
1407          */
1408         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1409                 // HTML generated here should probably have userlangattributes
1410                 // added to it for LTR text on RTL pages
1411                 $attribs = array();
1412                 if ( !is_null( $tooltip ) ) {
1413                         # Bug 25462: undo double-escaping.
1414                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1415                         $attribs['title'] = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag' ), $tooltip );
1416                 }
1417                 $link = Linker::link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1418                         $attribs,
1419                         array( 'action' => 'edit', 'section' => $section ),
1420                         array( 'noclasses', 'known' )
1421                 );
1422
1423                 # Run the old hook.  This takes up half of the function . . . hopefully
1424                 # we can rid of it someday.
1425                 $attribs = '';
1426                 if ( $tooltip ) {
1427                         $attribs = wfMsgExt( 'editsectionhint', array( 'language' => $lang, 'parsemag', 'escape' ), $tooltip );
1428                         $attribs = " title=\"$attribs\"";
1429                 }
1430                 $result = null;
1431                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1432                 if ( !is_null( $result ) ) {
1433                         # For reverse compatibility, add the brackets *after* the hook is
1434                         # run, and even add them to hook-provided text.  (This is the main
1435                         # reason that the EditSectionLink hook is deprecated in favor of
1436                         # DoEditSectionLink: it can't change the brackets or the span.)
1437                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1438                         return "<span class=\"editsection\">$result</span>";
1439                 }
1440
1441                 # Add the brackets and the span, and *then* run the nice new hook, with
1442                 # clean and non-redundant arguments.
1443                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1444                 $result = "<span class=\"editsection\">$result</span>";
1445
1446                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1447                 return $result;
1448         }
1449
1450         /**
1451          * Use PHP's magic __call handler to intercept legacy calls to the linker
1452          * for backwards compatibility.
1453          *
1454          * @param $fname String Name of called method
1455          * @param $args Array Arguments to the method
1456          */
1457         function __call( $fname, $args ) {
1458                 $realFunction = array( 'Linker', $fname );
1459                 if ( is_callable( $realFunction ) ) {
1460                         return call_user_func_array( $realFunction, $args );
1461                 } else {
1462                         $className = get_class( $this );
1463                         throw new MWException( "Call to undefined method $className::$fname" );
1464                 }
1465         }
1466
1467 }