includes/Linker.php

   1 <?php
   2 /**
   3  * Split off some of the internal bits from Skin.php.
   4  * These functions are used for primarily page content:
   5  * links, embedded images, table of contents. Links are
   6  * also used in the skin.
   7  * For the moment, Skin is a descendent class of Linker.
   8  * In the future, it should probably be further split
   9  * so that ever other bit of the wiki doesn't have to
  10  * go loading up Skin to get at it.
  11  *
  12  * @addtogroup Skins
  13  */
  14 class Linker {
  15         function __construct() {}
  16
  17         /**
  18          * @deprecated
  19          */
  20         function postParseLinkColour( $s = NULL ) {
  21                 return NULL;
  22         }
  23
  24         /** @todo document */
  25         function getExternalLinkAttributes( $link, $text, $class='' ) {
  26                 $link = htmlspecialchars( $link );
  27
  28                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  29
  30                 $r .= " title=\"{$link}\"";
  31                 return $r;
  32         }
  33
  34         function getInterwikiLinkAttributes( $link, $text, $class='' ) {
  35                 global $wgContLang;
  36
  37                 $link = urldecode( $link );
  38                 $link = $wgContLang->checkTitleEncoding( $link );
  39                 $link = preg_replace( '/[\\x00-\\x1f]/', ' ', $link );
  40                 $link = htmlspecialchars( $link );
  41
  42                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  43
  44                 $r .= " title=\"{$link}\"";
  45                 return $r;
  46         }
  47
  48         /** @todo document */
  49         function getInternalLinkAttributes( $link, $text, $broken = false ) {
  50                 $link = urldecode( $link );
  51                 $link = str_replace( '_', ' ', $link );
  52                 $link = htmlspecialchars( $link );
  53
  54                 if( $broken == 'stub' ) {
  55                         $r = ' class="stub"';
  56                 } else if ( $broken == 'yes' ) {
  57                         $r = ' class="new"';
  58                 } else {
  59                         $r = '';
  60                 }
  61
  62                 $r .= " title=\"{$link}\"";
  63                 return $r;
  64         }
  65
  66         /**
  67          * @param $nt Title object.
  68          * @param $text String: FIXME
  69          * @param $broken Boolean: FIXME, default 'false'.
  70          */
  71         function getInternalLinkAttributesObj( &$nt, $text, $broken = false ) {
  72                 if( $broken == 'stub' ) {
  73                         $r = ' class="stub"';
  74                 } else if ( $broken == 'yes' ) {
  75                         $r = ' class="new"';
  76                 } else {
  77                         $r = '';
  78                 }
  79
  80                 $r .= ' title="' . $nt->getEscapedText() . '"';
  81                 return $r;
  82         }
  83
  84         /**
  85          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
  86          * it if you already have a title object handy. See makeLinkObj for further documentation.
  87          *
  88          * @param $title String: the text of the title
  89          * @param $text  String: link text
  90          * @param $query String: optional query part
  91          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
  92          *                      be included in the link text. Other characters will be appended after
  93          *                      the end of the link.
  94          */
  95         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
  96                 wfProfileIn( 'Linker::makeLink' );
  97                 $nt = Title::newFromText( $title );
  98                 if ($nt) {
  99                         $result = $this->makeLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 100                 } else {
 101                         wfDebug( 'Invalid title passed to Linker::makeLink(): "'.$title."\"\n" );
 102                         $result = $text == "" ? $title : $text;
 103                 }
 104
 105                 wfProfileOut( 'Linker::makeLink' );
 106                 return $result;
 107         }
 108
 109         /**
 110          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
 111          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
 112          *
 113          * @param $title String: the text of the title
 114          * @param $text  String: link text
 115          * @param $query String: optional query part
 116          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 117          *                      be included in the link text. Other characters will be appended after
 118          *                      the end of the link.
 119          */
 120         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
 121                 $nt = Title::newFromText( $title );
 122                 if ($nt) {
 123                         return $this->makeKnownLinkObj( Title::newFromText( $title ), $text, $query, $trail, $prefix , $aprops );
 124                 } else {
 125                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "'.$title."\"\n" );
 126                         return $text == '' ? $title : $text;
 127                 }
 128         }
 129
 130         /**
 131          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
 132          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
 133          *
 134          * @param string $title The text of the title
 135          * @param string $text Link text
 136          * @param string $query Optional query part
 137          * @param string $trail Optional trail. Alphabetic characters at the start of this string will
 138          *                      be included in the link text. Other characters will be appended after
 139          *                      the end of the link.
 140          */
 141         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
 142                 $nt = Title::newFromText( $title );
 143                 if ($nt) {
 144                         return $this->makeBrokenLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 145                 } else {
 146                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "'.$title."\"\n" );
 147                         return $text == '' ? $title : $text;
 148                 }
 149         }
 150
 151         /**
 152          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
 153          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
 154          *
 155          * @param $title String: the text of the title
 156          * @param $text  String: link text
 157          * @param $query String: optional query part
 158          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 159          *                      be included in the link text. Other characters will be appended after
 160          *                      the end of the link.
 161          */
 162         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
 163                 $nt = Title::newFromText( $title );
 164                 if ($nt) {
 165                         return $this->makeStubLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 166                 } else {
 167                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "'.$title."\"\n" );
 168                         return $text == '' ? $title : $text;
 169                 }
 170         }
 171
 172         /**
 173          * Make a link for a title which may or may not be in the database. If you need to
 174          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
 175          * call to this will result in a DB query.
 176          *
 177          * @param $nt     Title: the title object to make the link from, e.g. from
 178          *                      Title::newFromText.
 179          * @param $text  String: link text
 180          * @param $query String: optional query part
 181          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 182          *                      be included in the link text. Other characters will be appended after
 183          *                      the end of the link.
 184          * @param $prefix String: optional prefix. As trail, only before instead of after.
 185          */
 186         function makeLinkObj( $nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
 187                 global $wgUser;
 188                 $fname = 'Linker::makeLinkObj';
 189                 wfProfileIn( $fname );
 190
 191                 # Fail gracefully
 192                 if ( ! is_object($nt) ) {
 193                         # throw new MWException();
 194                         wfProfileOut( $fname );
 195                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 196                 }
 197
 198                 if ( $nt->isExternal() ) {
 199                         $u = $nt->getFullURL();
 200                         $link = $nt->getPrefixedURL();
 201                         if ( '' == $text ) { $text = $nt->getPrefixedText(); }
 202                         $style = $this->getInterwikiLinkAttributes( $link, $text, 'extiw' );
 203
 204                         $inside = '';
 205                         if ( '' != $trail ) {
 206                                 $m = array();
 207                                 if ( preg_match( '/^([a-z]+)(.*)$$/sD', $trail, $m ) ) {
 208                                         $inside = $m[1];
 209                                         $trail = $m[2];
 210                                 }
 211                         }
 212                         $t = "<a href=\"{$u}\"{$style}>{$text}{$inside}</a>";
 213
 214                         wfProfileOut( $fname );
 215                         return $t;
 216                 } elseif ( $nt->isAlwaysKnown() ) {
 217                         # Image links, special page links and self-links with fragements are always known.
 218                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 219                 } else {
 220                         wfProfileIn( $fname.'-immediate' );
 221
 222                         # Handles links to special pages wich do not exist in the database:
 223                         if( $nt->getNamespace() == NS_SPECIAL ) {
 224                                 if( SpecialPage::exists( $nt->getDbKey() ) ) {
 225                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 226                                 } else {
 227                                         $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 228                                 }
 229                                 wfProfileOut( $fname.'-immediate' );
 230                                 wfProfileOut( $fname );
 231 print "returning $retVal;";
 232                                 return $retVal;
 233                         }
 234
 235                         # Work out link colour immediately
 236                         $aid = $nt->getArticleID() ;
 237                         if ( 0 == $aid ) {
 238                                 $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 239                         } else {
 240                                 $stub = false;
 241                                 if ( $nt->isContentPage() ) {
 242                                         $threshold = $wgUser->getOption('stubthreshold');
 243                                         if ( $threshold > 0 ) {
 244                                                 $dbr = wfGetDB( DB_SLAVE );
 245                                                 $s = $dbr->selectRow(
 246                                                         array( 'page' ),
 247                                                         array( 'page_len',
 248                                                                'page_is_redirect' ),
 249                                                         array( 'page_id' => $aid ), $fname ) ;
 250                                                 $stub = ( $s !== false && !$s->page_is_redirect &&
 251                                                           $s->page_len < $threshold );
 252                                         }
 253                                 }
 254                                 if ( $stub ) {
 255                                         $retVal = $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
 256                                 } else {
 257                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 258                                 }
 259                         }
 260                         wfProfileOut( $fname.'-immediate' );
 261                 }
 262                 wfProfileOut( $fname );
 263                 return $retVal;
 264         }
 265
 266         /**
 267          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
 268          * it doesn't have to do a database query. It's also valid for interwiki titles and special
 269          * pages.
 270          *
 271          * @param $nt Title object of target page
 272          * @param $text   String: text to replace the title
 273          * @param $query  String: link target
 274          * @param $trail  String: text after link
 275          * @param $prefix String: text before link text
 276          * @param $aprops String: extra attributes to the a-element
 277          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
 278          * @return the a-element
 279          */
 280         function makeKnownLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
 281
 282                 $fname = 'Linker::makeKnownLinkObj';
 283                 wfProfileIn( $fname );
 284
 285                 if ( !is_object( $nt ) ) {
 286                         wfProfileOut( $fname );
 287                         return $text;
 288                 }
 289
 290                 $u = $nt->escapeLocalURL( $query );
 291                 if ( $nt->getFragment() != '' ) {
 292                         if( $nt->getPrefixedDbkey() == '' ) {
 293                                 $u = '';
 294                                 if ( '' == $text ) {
 295                                         $text = htmlspecialchars( $nt->getFragment() );
 296                                 }
 297                         }
 298                         $u .= $nt->getFragmentForURL();
 299                 }
 300                 if ( $text == '' ) {
 301                         $text = htmlspecialchars( $nt->getPrefixedText() );
 302                 }
 303                 if ( $style == '' ) {
 304                         $style = $this->getInternalLinkAttributesObj( $nt, $text );
 305                 }
 306
 307                 if ( $aprops !== '' ) $aprops = ' ' . $aprops;
 308
 309                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 310                 $r = "<a href=\"{$u}\"{$style}{$aprops}>{$prefix}{$text}{$inside}</a>{$trail}";
 311                 wfProfileOut( $fname );
 312                 return $r;
 313         }
 314
 315         /**
 316          * Make a red link to the edit page of a given title.
 317          *
 318          * @param $title String: The text of the title
 319          * @param $text  String: Link text
 320          * @param $query String: Optional query part
 321          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
 322          *                      be included in the link text. Other characters will be appended after
 323          *                      the end of the link.
 324          */
 325         function makeBrokenLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 326                 # Fail gracefully
 327                 if ( ! isset($nt) ) {
 328                         # throw new MWException();
 329                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 330                 }
 331
 332                 $fname = 'Linker::makeBrokenLinkObj';
 333                 wfProfileIn( $fname );
 334
 335                 if ( '' == $query ) {
 336                         $q = 'action=edit';
 337                 } else {
 338                         $q = 'action=edit&'.$query;
 339                 }
 340                 $u = $nt->escapeLocalURL( $q );
 341
 342                 if ( '' == $text ) {
 343                         $text = htmlspecialchars( $nt->getPrefixedText() );
 344                 }
 345                 $style = $this->getInternalLinkAttributesObj( $nt, $text, "yes" );
 346
 347                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 348                 $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 349
 350                 wfProfileOut( $fname );
 351                 return $s;
 352         }
 353
 354         /**
 355          * Make a brown link to a short article.
 356          *
 357          * @param $title String: the text of the title
 358          * @param $text  String: link text
 359          * @param $query String: optional query part
 360          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 361          *                      be included in the link text. Other characters will be appended after
 362          *                      the end of the link.
 363          */
 364         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 365                 $style = $this->getInternalLinkAttributesObj( $nt, $text, 'stub' );
 366                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
 367         }
 368
 369         /**
 370          * Generate either a normal exists-style link or a stub link, depending
 371          * on the given page size.
 372          *
 373          * @param $size Integer
 374          * @param $nt Title object.
 375          * @param $text String
 376          * @param $query String
 377          * @param $trail String
 378          * @param $prefix String
 379          * @return string HTML of link
 380          */
 381         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 382                 global $wgUser;
 383                 $threshold = intval( $wgUser->getOption( 'stubthreshold' ) );
 384                 if( $size < $threshold ) {
 385                         return $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
 386                 } else {
 387                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 388                 }
 389         }
 390
 391         /**
 392          * Make appropriate markup for a link to the current article. This is currently rendered
 393          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 394          * despite $query not being used.
 395          */
 396         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 397                 if ( '' == $text ) {
 398                         $text = htmlspecialchars( $nt->getPrefixedText() );
 399                 }
 400                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 401                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 402         }
 403
 404         /** @todo document */
 405         function fnamePart( $url ) {
 406                 $basename = strrchr( $url, '/' );
 407                 if ( false === $basename ) {
 408                         $basename = $url;
 409                 } else {
 410                         $basename = substr( $basename, 1 );
 411                 }
 412                 return htmlspecialchars( $basename );
 413         }
 414
 415         /** Obsolete alias */
 416         function makeImage( $url, $alt = '' ) {
 417                 return $this->makeExternalImage( $url, $alt );
 418         }
 419
 420         /** @todo document */
 421         function makeExternalImage( $url, $alt = '' ) {
 422                 if ( '' == $alt ) {
 423                         $alt = $this->fnamePart( $url );
 424                 }
 425                 $s = '<img src="'.$url.'" alt="'.$alt.'" />';
 426                 return $s;
 427         }
 428
 429         /** @todo document */
 430         function makeImageLinkObj( $nt, $label, $alt, $align = '', $params = array(), $framed = false,
 431           $thumb = false, $manual_thumb = '', $valign = '', $upright = false, $upright_factor = 0, $border = false )
 432         {
 433                 global $wgContLang, $wgUser, $wgThumbLimits, $wgThumbUpright;
 434
 435                 $img   = new Image( $nt );
 436
 437                 if ( !$img->allowInlineDisplay() && $img->exists() ) {
 438                         return $this->makeKnownLinkObj( $nt );
 439                 }
 440
 441                 $error = $prefix = $postfix = '';
 442                 $page = isset( $params['page'] ) ? $params['page'] : false;
 443
 444                 if ( 'center' == $align )
 445                 {
 446                         $prefix  = '<div class="center">';
 447                         $postfix = '</div>';
 448                         $align   = 'none';
 449                 }
 450
 451                 if ( !isset( $params['width'] ) ) {
 452                         $params['width'] = $img->getWidth( $page );
 453                         if( $thumb || $framed ) {
 454                                 $wopt = $wgUser->getOption( 'thumbsize' );
 455
 456                                 if( !isset( $wgThumbLimits[$wopt] ) ) {
 457                                          $wopt = User::getDefaultOption( 'thumbsize' );
 458                                 }
 459
 460                                 // Reduce width for upright images when parameter 'upright' is used
 461                                 if ( $upright_factor == 0 ) {
 462                                         $upright_factor = $wgThumbUpright;
 463                                 }
 464                                 // Use width which is smaller: real image width or user preference width
 465                                 // For caching health: If width scaled down due to upright parameter, round to full __0 pixel to avoid the creation of a lot of odd thumbs
 466                                 $params['width'] = min( $params['width'], $upright ? round( $wgThumbLimits[$wopt] * $upright_factor, -1 ) : $wgThumbLimits[$wopt] );
 467                         }
 468                 }
 469
 470                 if ( $thumb || $framed ) {
 471
 472                         # Create a thumbnail. Alignment depends on language
 473                         # writing direction, # right aligned for left-to-right-
 474                         # languages ("Western languages"), left-aligned
 475                         # for right-to-left-languages ("Semitic languages")
 476                         #
 477                         # If  thumbnail width has not been provided, it is set
 478                         # to the default user option as specified in Language*.php
 479                         if ( $align == '' ) {
 480                                 $align = $wgContLang->isRTL() ? 'left' : 'right';
 481                         }
 482                         return $prefix.$this->makeThumbLinkObj( $img, $label, $alt, $align, $params, $framed, $manual_thumb, $upright ).$postfix;
 483                 }
 484
 485                 if ( $params['width'] && $img->exists() ) {
 486                         # Create a resized image, without the additional thumbnail features
 487                         $thumb = $img->transform( $params );
 488                 } else {
 489                         $thumb = false;
 490                 }
 491
 492                 if ( $page ) {
 493                         $query = 'page=' . urlencode( $page );
 494                 } else {
 495                         $query = '';
 496                 }
 497                 $u = $nt->getLocalURL( $query );
 498                 $imgAttribs = array(
 499                         'alt' => $alt,
 500                         'longdesc' => $u
 501                 );
 502
 503                 if ( $valign ) {
 504                         $imgAttribs['style'] = "vertical-align: $valign";
 505                 }
 506                 if ( $border ) {
 507                         $imgAttribs['class'] = "thumbborder";
 508                 }
 509                 $linkAttribs = array(
 510                         'href' => $u,
 511                         'class' => 'image',
 512                         'title' => $alt
 513                 );
 514
 515                 if ( !$thumb ) {
 516                         $s = $this->makeBrokenImageLinkObj( $img->getTitle() );
 517                 } else {
 518                         $s = $thumb->toHtml( $imgAttribs, $linkAttribs );
 519                 }
 520                 if ( '' != $align ) {
 521                         $s = "<div class=\"float{$align}\"><span>{$s}</span></div>";
 522                 }
 523                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 524         }
 525
 526         /**
 527          * Make HTML for a thumbnail including image, border and caption
 528          * $img is an Image object
 529          */
 530         function makeThumbLinkObj( $img, $label = '', $alt, $align = 'right', $params = array(), $framed=false , $manual_thumb = "", $upright = false ) {
 531                 global $wgStylePath, $wgContLang;
 532
 533                 $page = isset( $params['page'] ) ? $params['page'] : false;
 534
 535                 if ( empty( $params['width'] ) ) {
 536                         // Reduce width for upright images when parameter 'upright' is used
 537                         $params['width'] = $upright ? 130 : 180;
 538                 }
 539                 $thumb = false;
 540                 if ( $manual_thumb != '' ) {
 541                         # Use manually specified thumbnail
 542                         $manual_title = Title::makeTitleSafe( NS_IMAGE, $manual_thumb );
 543                         if( $manual_title ) {
 544                                 $manual_img = new Image( $manual_title );
 545                                 $thumb = $manual_img->getUnscaledThumb();
 546                         }
 547                 } elseif ( $framed ) {
 548                         // Use image dimensions, don't scale
 549                         $thumb = $img->getUnscaledThumb( $page );
 550                 } else {
 551                         # Do not present an image bigger than the source, for bitmap-style images
 552                         # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 553                         $srcWidth = $img->getWidth( $page );
 554                         if ( $srcWidth && !$img->mustRender() && $params['width'] > $srcWidth ) {
 555                                 $params['width'] = $srcWidth;
 556                         }
 557                         $thumb = $img->transform( $params );
 558                 }
 559
 560                 if ( $thumb ) {
 561                         $outerWidth = $thumb->getWidth() + 2;
 562                 } else {
 563                         $outerWidth = $params['width'] + 2;
 564                 }
 565
 566                 $query = $page ? 'page=' . urlencode( $page ) : '';
 567                 $u = $img->getTitle()->getLocalURL( $query );
 568
 569                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 570                 $magnifyalign = $wgContLang->isRTL() ? 'left' : 'right';
 571                 $textalign = $wgContLang->isRTL() ? ' style="text-align:right"' : '';
 572
 573                 $s = "<div class=\"thumb t{$align}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 574                 if ( !$thumb ) {
 575                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 576                         $zoomicon = '';
 577                 } elseif( !$img->exists() ) {
 578                         $s .= $this->makeBrokenImageLinkObj( $img->getTitle() );
 579                         $zoomicon = '';
 580                 } else {
 581                         $imgAttribs = array(
 582                                 'alt' => $alt,
 583                                 'longdesc' => $u,
 584                                 'class' => 'thumbimage'
 585                         );
 586                         $linkAttribs = array(
 587                                 'href' => $u,
 588                                 'class' => 'internal',
 589                                 'title' => $alt
 590                         );
 591
 592                         $s .= $thumb->toHtml( $imgAttribs, $linkAttribs );
 593                         if ( $framed ) {
 594                                 $zoomicon="";
 595                         } else {
 596                                 $zoomicon =  '<div class="magnify" style="float:'.$magnifyalign.'">'.
 597                                         '<a href="'.$u.'" class="internal" title="'.$more.'">'.
 598                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 599                                         'width="15" height="11" alt="" /></a></div>';
 600                         }
 601                 }
 602                 $s .= '  <div class="thumbcaption"'.$textalign.'>'.$zoomicon.$label."</div></div></div>";
 603                 return str_replace("\n", ' ', $s);
 604         }
 605
 606         /**
 607          * Pass a title object, not a title string
 608          */
 609         function makeBrokenImageLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 610                 # Fail gracefully
 611                 if ( ! isset($nt) ) {
 612                         # throw new MWException();
 613                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 614                 }
 615
 616                 $fname = 'Linker::makeBrokenImageLinkObj';
 617                 wfProfileIn( $fname );
 618
 619                 $q = 'wpDestFile=' . urlencode( $nt->getDBkey() );
 620                 if ( '' != $query ) {
 621                         $q .= "&$query";
 622                 }
 623                 $uploadTitle = SpecialPage::getTitleFor( 'Upload' );
 624                 $url = $uploadTitle->escapeLocalURL( $q );
 625
 626                 if ( '' == $text ) {
 627                         $text = htmlspecialchars( $nt->getPrefixedText() );
 628                 }
 629                 $style = $this->getInternalLinkAttributesObj( $nt, $text, "yes" );
 630                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 631                 $s = "<a href=\"{$url}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 632
 633                 wfProfileOut( $fname );
 634                 return $s;
 635         }
 636
 637         /** @todo document */
 638         function makeMediaLink( $name, /* wtf?! */ $url, $alt = '' ) {
 639                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 640                 return $this->makeMediaLinkObj( $nt, $alt );
 641         }
 642
 643         /**
 644          * Create a direct link to a given uploaded file.
 645          *
 646          * @param $title Title object.
 647          * @param $text  String: pre-sanitized HTML
 648          * @return string HTML
 649          *
 650          * @public
 651          * @todo Handle invalid or missing images better.
 652          */
 653         function makeMediaLinkObj( $title, $text = '' ) {
 654                 if( is_null( $title ) ) {
 655                         ### HOTFIX. Instead of breaking, return empty string.
 656                         return $text;
 657                 } else {
 658                         $img  = new Image( $title );
 659                         if( $img->exists() ) {
 660                                 $url  = $img->getURL();
 661                                 $class = 'internal';
 662                         } else {
 663                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 664                                 $url = $upload->getLocalUrl( 'wpDestFile=' . urlencode( $img->getName() ) );
 665                                 $class = 'new';
 666                         }
 667                         $alt = htmlspecialchars( $title->getText() );
 668                         if( $text == '' ) {
 669                                 $text = $alt;
 670                         }
 671                         $u = htmlspecialchars( $url );
 672                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 673                 }
 674         }
 675
 676         /** @todo document */
 677         function specialLink( $name, $key = '' ) {
 678                 global $wgContLang;
 679
 680                 if ( '' == $key ) { $key = strtolower( $name ); }
 681                 $pn = $wgContLang->ucfirst( $name );
 682                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 683                   wfMsg( $key ) );
 684         }
 685
 686         /** @todo document */
 687         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $ns = null ) {
 688                 $style = $this->getExternalLinkAttributes( $url, $text, 'external ' . $linktype );
 689                 global $wgNoFollowLinks, $wgNoFollowNsExceptions;
 690                 if( $wgNoFollowLinks && !(isset($ns) && in_array($ns, $wgNoFollowNsExceptions)) ) {
 691                         $style .= ' rel="nofollow"';
 692                 }
 693                 $url = htmlspecialchars( $url );
 694                 if( $escape ) {
 695                         $text = htmlspecialchars( $text );
 696                 }
 697                 return '<a href="'.$url.'"'.$style.'>'.$text.'</a>';
 698         }
 699
 700         /**
 701          * Make user link (or user contributions for unregistered users)
 702          * @param $userId   Integer: user id in database.
 703          * @param $userText String: user name in database
 704          * @return string HTML fragment
 705          * @private
 706          */
 707         function userLink( $userId, $userText ) {
 708                 $encName = htmlspecialchars( $userText );
 709                 if( $userId == 0 ) {
 710                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 711                         return $this->makeKnownLinkObj( $contribsPage,
 712                                 $encName);
 713                 } else {
 714                         $userPage = Title::makeTitle( NS_USER, $userText );
 715                         return $this->makeLinkObj( $userPage, $encName );
 716                 }
 717         }
 718
 719         /**
 720          * @param $userId Integer: user id in database.
 721          * @param $userText String: user name in database.
 722          * @param $redContribsWhenNoEdits Bool: return a red contribs link when the user had no edits and this is true.
 723          * @return string HTML fragment with talk and/or block links
 724          */
 725         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false ) {
 726                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 727                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 728                 $blockable = ( $wgSysopUserBans || 0 == $userId );
 729
 730                 $items = array();
 731                 if( $talkable ) {
 732                         $items[] = $this->userTalkLink( $userId, $userText );
 733                 }
 734                 if( $userId ) {
 735                         // check if the user has an edit
 736                         if( $redContribsWhenNoEdits && User::edits( $userId ) == 0 ) {
 737                                 $style = "class='new'";
 738                         } else {
 739                                 $style = '';
 740                         }
 741                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 742
 743                         $items[] = $this->makeKnownLinkObj( $contribsPage, wfMsgHtml( 'contribslink' ), '', '', '', '', $style );
 744                 }
 745                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 746                         $items[] = $this->blockLink( $userId, $userText );
 747                 }
 748
 749                 if( $items ) {
 750                         return ' (' . implode( ' | ', $items ) . ')';
 751                 } else {
 752                         return '';
 753                 }
 754         }
 755
 756         /**
 757          * Alias for userToolLinks( $userId, $userText, true );
 758          */
 759         public function userToolLinksRedContribs( $userId, $userText ) {
 760                 return $this->userToolLinks( $userId, $userText, true );
 761         }
 762
 763
 764         /**
 765          * @param $userId Integer: user id in database.
 766          * @param $userText String: user name in database.
 767          * @return string HTML fragment with user talk link
 768          * @private
 769          */
 770         function userTalkLink( $userId, $userText ) {
 771                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 772                 $userTalkLink = $this->makeLinkObj( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 773                 return $userTalkLink;
 774         }
 775
 776         /**
 777          * @param $userId Integer: userid
 778          * @param $userText String: user name in database.
 779          * @return string HTML fragment with block link
 780          * @private
 781          */
 782         function blockLink( $userId, $userText ) {
 783                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 784                 $blockLink = $this->makeKnownLinkObj( $blockPage,
 785                         wfMsgHtml( 'blocklink' ) );
 786                 return $blockLink;
 787         }
 788
 789         /**
 790          * Generate a user link if the current user is allowed to view it
 791          * @param $rev Revision object.
 792          * @return string HTML
 793          */
 794         function revUserLink( $rev ) {
 795                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 796                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() );
 797                 } else {
 798                         $link = wfMsgHtml( 'rev-deleted-user' );
 799                 }
 800                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 801                         return '<span class="history-deleted">' . $link . '</span>';
 802                 }
 803                 return $link;
 804         }
 805
 806         /**
 807          * Generate a user tool link cluster if the current user is allowed to view it
 808          * @param $rev Revision object.
 809          * @return string HTML
 810          */
 811         function revUserTools( $rev ) {
 812                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 813                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() ) .
 814                                 ' ' .
 815                                 $this->userToolLinks( $rev->getRawUser(), $rev->getRawUserText() );
 816                 } else {
 817                         $link = wfMsgHtml( 'rev-deleted-user' );
 818                 }
 819                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 820                         return '<span class="history-deleted">' . $link . '</span>';
 821                 }
 822                 return $link;
 823         }
 824
 825         /**
 826          * This function is called by all recent changes variants, by the page history,
 827          * and by the user contributions list. It is responsible for formatting edit
 828          * comments. It escapes any HTML in the comment, but adds some CSS to format
 829          * auto-generated comments (from section editing) and formats [[wikilinks]].
 830          *
 831          * @author Erik Moeller <moeller@scireview.de>
 832          *
 833          * Note: there's not always a title to pass to this function.
 834          * Since you can't set a default parameter for a reference, I've turned it
 835          * temporarily to a value pass. Should be adjusted further. --brion
 836          *
 837          * @param string $comment
 838          * @param mixed $title Title object (to generate link to the section in autocomment) or null
 839          * @param bool $local Whether section links should refer to local page
 840          */
 841         function formatComment($comment, $title = NULL, $local = false) {
 842                 wfProfileIn( __METHOD__ );
 843
 844                 # Sanitize text a bit:
 845                 $comment = str_replace( "\n", " ", $comment );
 846                 $comment = htmlspecialchars( $comment );
 847
 848                 # Render autocomments and make links:
 849                 $comment = $this->formatAutoComments( $comment, $title, $local );
 850                 $comment = $this->formatLinksInComment( $comment );
 851
 852                 wfProfileOut( __METHOD__ );
 853                 return $comment;
 854         }
 855
 856         /**
 857          * The pattern for autogen comments is / * foo * /, which makes for
 858          * some nasty regex.
 859          * We look for all comments, match any text before and after the comment,
 860          * add a separator where needed and format the comment itself with CSS
 861          * Called by Linker::formatComment.
 862          *
 863          * @param $comment Comment text
 864          * @param $title An optional title object used to links to sections
 865          *
 866          * @todo Document the $local parameter.
 867          */
 868         private function formatAutocomments( $comment, $title = NULL, $local = false ) {
 869                 $match = array();
 870                 while (preg_match('!(.*)/\*\s*(.*?)\s*\*/(.*)!', $comment,$match)) {
 871                         $pre=$match[1];
 872                         $auto=$match[2];
 873                         $post=$match[3];
 874                         $link='';
 875                         if( $title ) {
 876                                 $section = $auto;
 877
 878                                 # Generate a valid anchor name from the section title.
 879                                 # Hackish, but should generally work - we strip wiki
 880                                 # syntax, including the magic [[: that is used to
 881                                 # "link rather than show" in case of images and
 882                                 # interlanguage links.
 883                                 $section = str_replace( '[[:', '', $section );
 884                                 $section = str_replace( '[[', '', $section );
 885                                 $section = str_replace( ']]', '', $section );
 886                                 if ( $local ) {
 887                                         $sectionTitle = Title::newFromText( '#' . $section);
 888                                 } else {
 889                                         $sectionTitle = wfClone( $title );
 890                                         $sectionTitle->mFragment = $section;
 891                                 }
 892                                 $link = $this->makeKnownLinkObj( $sectionTitle, wfMsg( 'sectionlink' ) );
 893                         }
 894                         $sep='-';
 895                         $auto=$link.$auto;
 896                         if($pre) { $auto = $sep.' '.$auto; }
 897                         if($post) { $auto .= ' '.$sep; }
 898                         $auto='<span class="autocomment">'.$auto.'</span>';
 899                         $comment=$pre.$auto.$post;
 900                 }
 901
 902                 return $comment;
 903         }
 904
 905         /**
 906          * Format regular and media links - all other wiki formatting is ignored
 907          * Called by Linker::formatComment.
 908          * @param $comment The comment text.
 909          * @return Comment text with links using HTML.
 910          */
 911         private function formatLinksInComment( $comment ) {
 912                 global $wgContLang;
 913
 914                 $medians = '(?:' . preg_quote( Namespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
 915                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
 916
 917                 while(preg_match('/\[\[:?(.*?)(\|(.*?))*\]\](.*)$/',$comment,$match)) {
 918                         # Handle link renaming [[foo|text]] will show link as "text"
 919                         if( "" != $match[3] ) {
 920                                 $text = $match[3];
 921                         } else {
 922                                 $text = $match[1];
 923                         }
 924                         $submatch = array();
 925                         if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
 926                                 # Media link; trail not supported.
 927                                 $linkRegexp = '/\[\[(.*?)\]\]/';
 928                                 $thelink = $this->makeMediaLink( $submatch[1], "", $text );
 929                         } else {
 930                                 # Other kind of link
 931                                 if( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
 932                                         $trail = $submatch[1];
 933                                 } else {
 934                                         $trail = "";
 935                                 }
 936                                 $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
 937                                 if (isset($match[1][0]) && $match[1][0] == ':')
 938                                         $match[1] = substr($match[1], 1);
 939                                 $thelink = $this->makeLink( $match[1], $text, "", $trail );
 940                         }
 941                         $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
 942                 }
 943
 944                 return $comment;
 945         }
 946
 947         /**
 948          * Wrap a comment in standard punctuation and formatting if
 949          * it's non-empty, otherwise return empty string.
 950          *
 951          * @param string $comment
 952          * @param mixed $title Title object (to generate link to section in autocomment) or null
 953          * @param bool $local Whether section links should refer to local page
 954          *
 955          * @return string
 956          */
 957         function commentBlock( $comment, $title = NULL, $local = false ) {
 958                 // '*' used to be the comment inserted by the software way back
 959                 // in antiquity in case none was provided, here for backwards
 960                 // compatability, acc. to brion -ævar
 961                 if( $comment == '' || $comment == '*' ) {
 962                         return '';
 963                 } else {
 964                         $formatted = $this->formatComment( $comment, $title, $local );
 965                         return " <span class=\"comment\">($formatted)</span>";
 966                 }
 967         }
 968
 969         /**
 970          * Wrap and format the given revision's comment block, if the current
 971          * user is allowed to view it.
 972          *
 973          * @param Revision $rev
 974          * @param bool $local Whether section links should refer to local page
 975          * @return string HTML
 976          */
 977         function revComment( Revision $rev, $local = false ) {
 978                 if( $rev->userCan( Revision::DELETED_COMMENT ) ) {
 979                         $block = $this->commentBlock( $rev->getRawComment(), $rev->getTitle(), $local );
 980                 } else {
 981                         $block = " <span class=\"comment\">" .
 982                                 wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
 983                 }
 984                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
 985                         return " <span class=\"history-deleted\">$block</span>";
 986                 }
 987                 return $block;
 988         }
 989
 990         /** @todo document */
 991         function tocIndent() {
 992                 return "\n<ul>";
 993         }
 994
 995         /** @todo document */
 996         function tocUnindent($level) {
 997                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
 998         }
 999
1000         /**
1001          * parameter level defines if we are on an indentation level
1002          */
1003         function tocLine( $anchor, $tocline, $tocnumber, $level ) {
1004                 return "\n<li class=\"toclevel-$level\"><a href=\"#" .
1005                         $anchor . '"><span class="tocnumber">' .
1006                         $tocnumber . '</span> <span class="toctext">' .
1007                         $tocline . '</span></a>';
1008         }
1009
1010         /** @todo document */
1011         function tocLineEnd() {
1012                 return "</li>\n";
1013         }
1014
1015         /** @todo document */
1016         function tocList($toc) {
1017                 global $wgJsMimeType;
1018                 $title =  wfMsgHtml('toc') ;
1019                 return
1020                    '<table id="toc" class="toc" summary="' . $title .'"><tr><td>'
1021                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1022                  . $toc
1023                  # no trailing newline, script should not be wrapped in a
1024                  # paragraph
1025                  . "</ul>\n</td></tr></table>"
1026                  . '<script type="' . $wgJsMimeType . '">'
1027                  . ' if (window.showTocToggle) {'
1028                  . ' var tocShowText = "' . wfEscapeJsString( wfMsg('showtoc') ) . '";'
1029                  . ' var tocHideText = "' . wfEscapeJsString( wfMsg('hidetoc') ) . '";'
1030                  . ' showTocToggle();'
1031                  . ' } '
1032                  . "</script>\n";
1033         }
1034
1035         /** @todo document */
1036         public function editSectionLinkForOther( $title, $section ) {
1037                 global $wgContLang;
1038
1039                 $title = Title::newFromText( $title );
1040                 $editurl = '&section='.$section;
1041                 $url = $this->makeKnownLinkObj( $title, wfMsg('editsection'), 'action=edit'.$editurl );
1042
1043                 return "<span class=\"editsection\">[".$url."]</span>";
1044
1045         }
1046
1047         /**
1048          * @param $title Title object.
1049          * @param $section Integer: section number.
1050          * @param $hint Link String: title, or default if omitted or empty
1051          */
1052         public function editSectionLink( $nt, $section, $hint='' ) {
1053                 global $wgContLang;
1054
1055                 $editurl = '&section='.$section;
1056                 $hint = ( $hint=='' ) ? '' : ' title="' . wfMsgHtml( 'editsectionhint', htmlspecialchars( $hint ) ) . '"';
1057                 $url = $this->makeKnownLinkObj( $nt, wfMsg('editsection'), 'action=edit'.$editurl, '', '', '',  $hint );
1058
1059                 return "<span class=\"editsection\">[".$url."]</span>";
1060         }
1061
1062         /**
1063          * Create a headline for content
1064          *
1065          * @param int    $level   The level of the headline (1-6)
1066          * @param string $attribs Any attributes for the headline, starting with a space and ending with '>'
1067          *                        This *must* be at least '>' for no attribs
1068          * @param string $anchor  The anchor to give the headline (the bit after the #)
1069          * @param string $text    The text of the header
1070          * @param string $link    HTML to add for the section edit link
1071          *
1072          * @return string HTML headline
1073          */
1074         public function makeHeadline( $level, $attribs, $anchor, $text, $link ) {
1075                 return "<a name=\"$anchor\"></a><h$level$attribs$link <span class=\"mw-headline\">$text</span></h$level>";
1076         }
1077
1078         /**
1079          * Split a link trail, return the "inside" portion and the remainder of the trail
1080          * as a two-element array
1081          *
1082          * @static
1083          */
1084         static function splitTrail( $trail ) {
1085                 static $regex = false;
1086                 if ( $regex === false ) {
1087                         global $wgContLang;
1088                         $regex = $wgContLang->linkTrail();
1089                 }
1090                 $inside = '';
1091                 if ( '' != $trail ) {
1092                         $m = array();
1093                         if ( preg_match( $regex, $trail, $m ) ) {
1094                                 $inside = $m[1];
1095                                 $trail = $m[2];
1096                         }
1097                 }
1098                 return array( $inside, $trail );
1099         }
1100
1101         /**
1102          * Generate a rollback link for a given revision.  Currently it's the
1103          * caller's responsibility to ensure that the revision is the top one. If
1104          * it's not, of course, the user will get an error message.
1105          *
1106          * If the calling page is called with the parameter &bot=1, all rollback
1107          * links also get that parameter. It causes the edit itself and the rollback
1108          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1109          * changes, so this allows sysops to combat a busy vandal without bothering
1110          * other users.
1111          *
1112          * @param Revision $rev
1113          */
1114         function generateRollback( $rev ) {
1115                 global $wgUser, $wgRequest;
1116                 $title = $rev->getTitle();
1117
1118                 $extraRollback = $wgRequest->getBool( 'bot' ) ? '&bot=1' : '';
1119                 $extraRollback .= '&token=' . urlencode(
1120                         $wgUser->editToken( array( $title->getPrefixedText(), $rev->getUserText() ) ) );
1121                 return '<span class="mw-rollback-link">['. $this->makeKnownLinkObj( $title,
1122                         wfMsg('rollbacklink'),
1123                         'action=rollback&from=' . urlencode( $rev->getUserText() ) . $extraRollback ) .']</span>';
1124         }
1125
1126         /**
1127          * Returns HTML for the "templates used on this page" list.
1128          *
1129          * @param array $templates Array of templates from Article::getUsedTemplate
1130          * or similar
1131          * @param bool $preview Whether this is for a preview
1132          * @param bool $section Whether this is for a section edit
1133          * @return string HTML output
1134          */
1135         public function formatTemplates( $templates, $preview = false, $section = false) {
1136                 global $wgUser;
1137                 wfProfileIn( __METHOD__ );
1138
1139                 $sk = $wgUser->getSkin();
1140
1141                 $outText = '';
1142                 if ( count( $templates ) > 0 ) {
1143                         # Do a batch existence check
1144                         $batch = new LinkBatch;
1145                         foreach( $templates as $title ) {
1146                                 $batch->addObj( $title );
1147                         }
1148                         $batch->execute();
1149
1150                         # Construct the HTML
1151                         $outText = '<div class="mw-templatesUsedExplanation">';
1152                         if ( $preview ) {
1153                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ) );
1154                         } elseif ( $section ) {
1155                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ) );
1156                         } else {
1157                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ) );
1158                         }
1159                         $outText .= '</div><ul>';
1160
1161                         foreach ( $templates as $titleObj ) {
1162                                 $r = $titleObj->getRestrictions( 'edit' );
1163                                 if ( in_array( 'sysop', $r ) ) {
1164                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1165                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1166                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1167                                 } else {
1168                                         $protected = '';
1169                                 }
1170                                 $outText .= '<li>' . $sk->makeLinkObj( $titleObj ) . ' ' . $protected . '</li>';
1171                         }
1172                         $outText .= '</ul>';
1173                 }
1174                 wfProfileOut( __METHOD__  );
1175                 return $outText;
1176         }
1177
1178         /**
1179          * Format a size in bytes for output, using an appropriate
1180          * unit (B, KB, MB or GB) according to the magnitude in question
1181          *
1182          * @param $size Size to format
1183          * @return string
1184          */
1185         public function formatSize( $size ) {
1186                 global $wgLang;
1187                 // For small sizes no decimal places necessary
1188                 $round = 0;
1189                 if( $size > 1024 ) {
1190                         $size = $size / 1024;
1191                         if( $size > 1024 ) {
1192                                 $size = $size / 1024;
1193                                 // For MB and bigger two decimal places are smarter
1194                                 $round = 2;
1195                                 if( $size > 1024 ) {
1196                                         $size = $size / 1024;
1197                                         $msg = 'size-gigabytes';
1198                                 } else {
1199                                         $msg = 'size-megabytes';
1200                                 }
1201                         } else {
1202                                 $msg = 'size-kilobytes';
1203                         }
1204                 } else {
1205                         $msg = 'size-bytes';
1206                 }
1207                 $size = round( $size, $round );
1208                 return wfMsgHtml( $msg, $wgLang->formatNum( $size ) );
1209         }
1210
1211         /**
1212          * Given the id of an interface element, constructs the appropriate title
1213          * and accesskey attributes from the system messages.  (Note, this is usu-
1214          * ally the id but isn't always, because sometimes the accesskey needs to
1215          * go on a different element than the id, for reverse-compatibility, etc.)
1216          *
1217          * @param string $name Id of the element, minus prefixes.
1218          * @return string title and accesskey attributes, ready to drop in an
1219          *   element (e.g., ' title="This does something [x]" accesskey="x"').
1220          */
1221         public function tooltipAndAccesskey($name) {
1222                 $out = '';
1223
1224                 $tooltip = wfMsg('tooltip-'.$name);
1225                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1226                         // Compatibility: formerly some tooltips had [alt-.] hardcoded
1227                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1228                         $out .= ' title="'.htmlspecialchars($tooltip);
1229                 }
1230                 $accesskey = wfMsg('accesskey-'.$name);
1231                 if ($accesskey && $accesskey != '-' && !wfEmptyMsg('accesskey-'.$name, $accesskey)) {
1232                         if ($out) $out .= " [$accesskey]\" accesskey=\"$accesskey\"";
1233                         else $out .= " title=\"[$accesskey]\" accesskey=\"$accesskey\"";
1234                 } elseif ($out) {
1235                         $out .= '"';
1236                 }
1237                 return $out;
1238         }
1239
1240         /**
1241          * Given the id of an interface element, constructs the appropriate title
1242          * attribute from the system messages.  (Note, this is usually the id but
1243          * isn't always, because sometimes the accesskey needs to go on a different
1244          * element than the id, for reverse-compatibility, etc.)
1245          *
1246          * @param string $name Id of the element, minus prefixes.
1247          * @return string title attribute, ready to drop in an element
1248          * (e.g., ' title="This does something"').
1249          */
1250         public function tooltip($name) {
1251                 $out = '';
1252
1253                 $tooltip = wfMsg('tooltip-'.$name);
1254                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1255                         $out = ' title="'.htmlspecialchars($tooltip).'"';
1256                 }
1257
1258                 return $out;
1259         }
1260 }
1261
1262 ?>