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