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
  16         /**
  17          * Flags for userToolLinks()
  18          */
  19         const TOOL_LINKS_NOBLOCK = 1;
  20
  21         function __construct() {}
  22
  23         /**
  24          * @deprecated
  25          */
  26         function postParseLinkColour( $s = NULL ) {
  27                 return NULL;
  28         }
  29
  30         /** @todo document */
  31         function getExternalLinkAttributes( $link, $text, $class='' ) {
  32                 $link = htmlspecialchars( $link );
  33
  34                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  35
  36                 $r .= " title=\"{$link}\"";
  37                 return $r;
  38         }
  39
  40         function getInterwikiLinkAttributes( $link, $text, $class='' ) {
  41                 global $wgContLang;
  42
  43                 $link = urldecode( $link );
  44                 $link = $wgContLang->checkTitleEncoding( $link );
  45                 $link = preg_replace( '/[\\x00-\\x1f]/', ' ', $link );
  46                 $link = htmlspecialchars( $link );
  47
  48                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  49
  50                 $r .= " title=\"{$link}\"";
  51                 return $r;
  52         }
  53
  54         /** @todo document */
  55         function getInternalLinkAttributes( $link, $text, $broken = false ) {
  56                 $link = urldecode( $link );
  57                 $link = str_replace( '_', ' ', $link );
  58                 $link = htmlspecialchars( $link );
  59
  60                 if( $broken == 'stub' ) {
  61                         $r = ' class="stub"';
  62                 } else if ( $broken == 'yes' ) {
  63                         $r = ' class="new"';
  64                 } else {
  65                         $r = '';
  66                 }
  67
  68                 $r .= " title=\"{$link}\"";
  69                 return $r;
  70         }
  71
  72         /**
  73          * @param $nt Title object.
  74          * @param $text String: FIXME
  75          * @param $broken Boolean: FIXME, default 'false'.
  76          */
  77         function getInternalLinkAttributesObj( &$nt, $text, $broken = false ) {
  78                 if( $broken == 'stub' ) {
  79                         $r = ' class="stub"';
  80                 } else if ( $broken == 'yes' ) {
  81                         $r = ' class="new"';
  82                 } else {
  83                         $r = '';
  84                 }
  85
  86                 $r .= ' title="' . $nt->getEscapedText() . '"';
  87                 return $r;
  88         }
  89
  90         /**
  91          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
  92          * it if you already have a title object handy. See makeLinkObj for further documentation.
  93          *
  94          * @param $title String: the text of the title
  95          * @param $text  String: link text
  96          * @param $query String: optional query part
  97          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
  98          *                      be included in the link text. Other characters will be appended after
  99          *                      the end of the link.
 100          */
 101         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
 102                 wfProfileIn( __METHOD__ );
 103                 $nt = Title::newFromText( $title );
 104                 if ( $nt instanceof Title ) {
 105                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
 106                 } else {
 107                         wfDebug( 'Invalid title passed to Linker::makeLink(): "'.$title."\"\n" );
 108                         $result = $text == "" ? $title : $text;
 109                 }
 110
 111                 wfProfileOut( __METHOD__ );
 112                 return $result;
 113         }
 114
 115         /**
 116          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
 117          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
 118          *
 119          * @param $title String: the text of the title
 120          * @param $text  String: link text
 121          * @param $query String: optional query part
 122          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 123          *                      be included in the link text. Other characters will be appended after
 124          *                      the end of the link.
 125          */
 126         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
 127                 $nt = Title::newFromText( $title );
 128                 if ( $nt instanceof Title ) {
 129                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
 130                 } else {
 131                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "'.$title."\"\n" );
 132                         return $text == '' ? $title : $text;
 133                 }
 134         }
 135
 136         /**
 137          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
 138          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
 139          *
 140          * @param string $title The text of the title
 141          * @param string $text Link text
 142          * @param string $query Optional query part
 143          * @param string $trail Optional trail. Alphabetic characters at the start of this string will
 144          *                      be included in the link text. Other characters will be appended after
 145          *                      the end of the link.
 146          */
 147         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
 148                 $nt = Title::newFromText( $title );
 149                 if ( $nt instanceof Title ) {
 150                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
 151                 } else {
 152                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "'.$title."\"\n" );
 153                         return $text == '' ? $title : $text;
 154                 }
 155         }
 156
 157         /**
 158          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
 159          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
 160          *
 161          * @param $title String: the text of the title
 162          * @param $text  String: link text
 163          * @param $query String: optional query part
 164          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 165          *                      be included in the link text. Other characters will be appended after
 166          *                      the end of the link.
 167          */
 168         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
 169                 $nt = Title::newFromText( $title );
 170                 if ( $nt instanceof Title ) {
 171                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
 172                 } else {
 173                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "'.$title."\"\n" );
 174                         return $text == '' ? $title : $text;
 175                 }
 176         }
 177
 178         /**
 179          * Make a link for a title which may or may not be in the database. If you need to
 180          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
 181          * call to this will result in a DB query.
 182          *
 183          * @param $nt     Title: the title object to make the link from, e.g. from
 184          *                      Title::newFromText.
 185          * @param $text  String: link text
 186          * @param $query String: optional query part
 187          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 188          *                      be included in the link text. Other characters will be appended after
 189          *                      the end of the link.
 190          * @param $prefix String: optional prefix. As trail, only before instead of after.
 191          */
 192         function makeLinkObj( $nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
 193                 global $wgUser;
 194                 wfProfileIn( __METHOD__ );
 195
 196                 if ( !$nt instanceof Title ) {
 197                         # Fail gracefully
 198                         wfProfileOut( __METHOD__ );
 199                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 200                 }
 201
 202                 if ( $nt->isExternal() ) {
 203                         $u = $nt->getFullURL();
 204                         $link = $nt->getPrefixedURL();
 205                         if ( '' == $text ) { $text = $nt->getPrefixedText(); }
 206                         $style = $this->getInterwikiLinkAttributes( $link, $text, 'extiw' );
 207
 208                         $inside = '';
 209                         if ( '' != $trail ) {
 210                                 $m = array();
 211                                 if ( preg_match( '/^([a-z]+)(.*)$$/sD', $trail, $m ) ) {
 212                                         $inside = $m[1];
 213                                         $trail = $m[2];
 214                                 }
 215                         }
 216                         $t = "<a href=\"{$u}\"{$style}>{$text}{$inside}</a>";
 217
 218                         wfProfileOut( __METHOD__ );
 219                         return $t;
 220                 } elseif ( $nt->isAlwaysKnown() ) {
 221                         # Image links, special page links and self-links with fragements are always known.
 222                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 223                 } else {
 224                         wfProfileIn( __METHOD__.'-immediate' );
 225
 226                         # Handles links to special pages wich do not exist in the database:
 227                         if( $nt->getNamespace() == NS_SPECIAL ) {
 228                                 if( SpecialPage::exists( $nt->getDbKey() ) ) {
 229                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 230                                 } else {
 231                                         $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 232                                 }
 233                                 wfProfileOut( __METHOD__.'-immediate' );
 234                                 wfProfileOut( __METHOD__ );
 235                                 return $retVal;
 236                         }
 237
 238                         # Work out link colour immediately
 239                         $aid = $nt->getArticleID() ;
 240                         if ( 0 == $aid ) {
 241                                 $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 242                         } else {
 243                                 $stub = false;
 244                                 if ( $nt->isContentPage() ) {
 245                                         $threshold = $wgUser->getOption('stubthreshold');
 246                                         if ( $threshold > 0 ) {
 247                                                 $dbr = wfGetDB( DB_SLAVE );
 248                                                 $s = $dbr->selectRow(
 249                                                         array( 'page' ),
 250                                                         array( 'page_len',
 251                                                                'page_is_redirect' ),
 252                                                         array( 'page_id' => $aid ), __METHOD__ ) ;
 253                                                 $stub = ( $s !== false && !$s->page_is_redirect &&
 254                                                           $s->page_len < $threshold );
 255                                         }
 256                                 }
 257                                 if ( $stub ) {
 258                                         $retVal = $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
 259                                 } else {
 260                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 261                                 }
 262                         }
 263                         wfProfileOut( __METHOD__.'-immediate' );
 264                 }
 265                 wfProfileOut( __METHOD__ );
 266                 return $retVal;
 267         }
 268
 269         /**
 270          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
 271          * it doesn't have to do a database query. It's also valid for interwiki titles and special
 272          * pages.
 273          *
 274          * @param $nt Title object of target page
 275          * @param $text   String: text to replace the title
 276          * @param $query  String: link target
 277          * @param $trail  String: text after link
 278          * @param $prefix String: text before link text
 279          * @param $aprops String: extra attributes to the a-element
 280          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
 281          * @return the a-element
 282          */
 283         function makeKnownLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
 284                 wfProfileIn( __METHOD__ );
 285
 286                 if ( !$nt instanceof Title ) {
 287                         # Fail gracefully
 288                         wfProfileOut( __METHOD__ );
 289                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 290                 }
 291
 292                 $u = $nt->escapeLocalURL( $query );
 293                 if ( $nt->getFragment() != '' ) {
 294                         if( $nt->getPrefixedDbkey() == '' ) {
 295                                 $u = '';
 296                                 if ( '' == $text ) {
 297                                         $text = htmlspecialchars( $nt->getFragment() );
 298                                 }
 299                         }
 300                         $u .= $nt->getFragmentForURL();
 301                 }
 302                 if ( $text == '' ) {
 303                         $text = htmlspecialchars( $nt->getPrefixedText() );
 304                 }
 305                 if ( $style == '' ) {
 306                         $style = $this->getInternalLinkAttributesObj( $nt, $text );
 307                 }
 308
 309                 if ( $aprops !== '' ) $aprops = ' ' . $aprops;
 310
 311                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 312                 $r = "<a href=\"{$u}\"{$style}{$aprops}>{$prefix}{$text}{$inside}</a>{$trail}";
 313                 wfProfileOut( __METHOD__ );
 314                 return $r;
 315         }
 316
 317         /**
 318          * Make a red link to the edit page of a given title.
 319          *
 320          * @param $title String: The text of the title
 321          * @param $text  String: Link text
 322          * @param $query String: Optional query part
 323          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
 324          *                      be included in the link text. Other characters will be appended after
 325          *                      the end of the link.
 326          */
 327         function makeBrokenLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 328                 wfProfileIn( __METHOD__ );
 329
 330                 if ( !$nt instanceof Title ) {
 331                         # Fail gracefully
 332                         wfProfileOut( __METHOD__ );
 333                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 334                 }
 335
 336                 if( $nt->getNamespace() == NS_SPECIAL ) {
 337                         $q = $query;
 338                 } else if ( '' == $query ) {
 339                         $q = 'action=edit';
 340                 } else {
 341                         $q = 'action=edit&'.$query;
 342                 }
 343                 $u = $nt->escapeLocalURL( $q );
 344
 345                 if ( '' == $text ) {
 346                         $text = htmlspecialchars( $nt->getPrefixedText() );
 347                 }
 348                 $style = $this->getInternalLinkAttributesObj( $nt, $text, "yes" );
 349
 350                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 351                 $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 352
 353                 wfProfileOut( __METHOD__ );
 354                 return $s;
 355         }
 356
 357         /**
 358          * Make a brown link to a short article.
 359          *
 360          * @param $title String: the text of the title
 361          * @param $text  String: link text
 362          * @param $query String: optional query part
 363          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 364          *                      be included in the link text. Other characters will be appended after
 365          *                      the end of the link.
 366          */
 367         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 368                 $style = $this->getInternalLinkAttributesObj( $nt, $text, 'stub' );
 369                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
 370         }
 371
 372         /**
 373          * Generate either a normal exists-style link or a stub link, depending
 374          * on the given page size.
 375          *
 376          * @param $size Integer
 377          * @param $nt Title object.
 378          * @param $text String
 379          * @param $query String
 380          * @param $trail String
 381          * @param $prefix String
 382          * @return string HTML of link
 383          */
 384         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 385                 global $wgUser;
 386                 $threshold = intval( $wgUser->getOption( 'stubthreshold' ) );
 387                 if( $size < $threshold ) {
 388                         return $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
 389                 } else {
 390                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 391                 }
 392         }
 393
 394         /**
 395          * Make appropriate markup for a link to the current article. This is currently rendered
 396          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 397          * despite $query not being used.
 398          */
 399         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 400                 if ( '' == $text ) {
 401                         $text = htmlspecialchars( $nt->getPrefixedText() );
 402                 }
 403                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 404                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 405         }
 406
 407         /** @todo document */
 408         function fnamePart( $url ) {
 409                 $basename = strrchr( $url, '/' );
 410                 if ( false === $basename ) {
 411                         $basename = $url;
 412                 } else {
 413                         $basename = substr( $basename, 1 );
 414                 }
 415                 return htmlspecialchars( $basename );
 416         }
 417
 418         /** Obsolete alias */
 419         function makeImage( $url, $alt = '' ) {
 420                 return $this->makeExternalImage( $url, $alt );
 421         }
 422
 423         /** @todo document */
 424         function makeExternalImage( $url, $alt = '' ) {
 425                 if ( '' == $alt ) {
 426                         $alt = $this->fnamePart( $url );
 427                 }
 428                 $s = '<img src="'.$url.'" alt="'.$alt.'" />';
 429                 return $s;
 430         }
 431
 432         /**
 433          * Creates the HTML source for images
 434          * @deprecated use makeImageLink2
 435          *
 436          * @param object $title
 437          * @param string $label label text
 438          * @param string $alt alt text
 439          * @param string $align horizontal alignment: none, left, center, right)
 440          * @param array $handlerParams Parameters to be passed to the media handler
 441          * @param boolean $framed shows image in original size in a frame
 442          * @param boolean $thumb shows image as thumbnail in a frame
 443          * @param string $manualthumb image name for the manual thumbnail
 444          * @param string $valign vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
 445          * @return string
 446          */
 447         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(), $framed = false,
 448           $thumb = false, $manualthumb = '', $valign = '', $time = false )
 449         {
 450                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
 451                 if ( $align ) {
 452                         $frameParams['align'] = $align;
 453                 }
 454                 if ( $framed ) {
 455                         $frameParams['framed'] = true;
 456                 }
 457                 if ( $thumb ) {
 458                         $frameParams['thumbnail'] = true;
 459                 }
 460                 if ( $manualthumb ) {
 461                         $frameParams['manualthumb'] = $manualthumb;
 462                 }
 463                 if ( $valign ) {
 464                         $frameParams['valign'] = $valign;
 465                 }
 466                 $file = wfFindFile( $title, $time );
 467                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams );
 468         }
 469
 470         /**
 471          * Make an image link
 472          * @param Title $title Title object
 473          * @param File $file File object, or false if it doesn't exist
 474          *
 475      * @param array $frameParams Associative array of parameters external to the media handler.
 476      *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
 477      *     will often be false.
 478      *          thumbnail       If present, downscale and frame
 479      *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
 480      *          framed          Shows image in original size in a frame
 481      *          frameless       Downscale but don't frame
 482      *          upright         If present, tweak default sizes for portrait orientation
 483      *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
 484      *          border          If present, show a border around the image
 485      *          align           Horizontal alignment (left, right, center, none)
 486      *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
 487      *                          bottom, text-bottom)
 488      *          alt             Alternate text for image (i.e. alt attribute). Plain text.
 489      *          caption         HTML for image caption.
 490          *
 491      * @param array $handlerParams Associative array of media handler parameters, to be passed
 492      *       to transform(). Typical keys are "width" and "page".
 493          */
 494         function makeImageLink2( Title $title, $file, $frameParams = array(), $handlerParams = array() ) {
 495                 global $wgContLang, $wgUser, $wgThumbLimits, $wgThumbUpright;
 496                 if ( $file && !$file->allowInlineDisplay() ) {
 497                         wfDebug( __METHOD__.': '.$title->getPrefixedDBkey()." does not allow inline display\n" );
 498                         return $this->makeKnownLinkObj( $title );
 499                 }
 500
 501                 // Shortcuts
 502                 $fp =& $frameParams;
 503                 $hp =& $handlerParams;
 504
 505                 // Clean up parameters
 506                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 507                 if ( !isset( $fp['align'] ) ) $fp['align'] = '';
 508                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 509
 510                 $prefix = $postfix = '';
 511
 512                 if ( 'center' == $fp['align'] )
 513                 {
 514                         $prefix  = '<div class="center">';
 515                         $postfix = '</div>';
 516                         $fp['align']   = 'none';
 517                 }
 518                 if ( $file && !isset( $hp['width'] ) ) {
 519                         $hp['width'] = $file->getWidth( $page );
 520
 521                         if( isset( $fp['thumbnail'] ) || isset( $fp['framed'] ) || isset( $fp['frameless'] ) || !$hp['width'] ) {
 522                                 $wopt = $wgUser->getOption( 'thumbsize' );
 523
 524                                 if( !isset( $wgThumbLimits[$wopt] ) ) {
 525                                          $wopt = User::getDefaultOption( 'thumbsize' );
 526                                 }
 527
 528                                 // Reduce width for upright images when parameter 'upright' is used
 529                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 530                                         $fp['upright'] = $wgThumbUpright;
 531                                 }
 532                                 // Use width which is smaller: real image width or user preference width
 533                                 // 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
 534                                 $prefWidth = isset( $fp['upright'] ) ?
 535                                         round( $wgThumbLimits[$wopt] * $fp['upright'], -1 ) :
 536                                         $wgThumbLimits[$wopt];
 537                                 if ( $hp['width'] <= 0 || $prefWidth < $hp['width'] ) {
 538                                         $hp['width'] = $prefWidth;
 539                                 }
 540                         }
 541                 }
 542
 543                 if ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) {
 544
 545                         # Create a thumbnail. Alignment depends on language
 546                         # writing direction, # right aligned for left-to-right-
 547                         # languages ("Western languages"), left-aligned
 548                         # for right-to-left-languages ("Semitic languages")
 549                         #
 550                         # If  thumbnail width has not been provided, it is set
 551                         # to the default user option as specified in Language*.php
 552                         if ( $fp['align'] == '' ) {
 553                                 $fp['align'] = $wgContLang->isRTL() ? 'left' : 'right';
 554                         }
 555                         return $prefix.$this->makeThumbLink2( $title, $file, $fp, $hp ).$postfix;
 556                 }
 557
 558                 if ( $file && isset( $fp['frameless'] ) ) {
 559                         $srcWidth = $file->getWidth( $page );
 560                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 561                         # This is the same behaviour as the "thumb" option does it already.
 562                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 563                                 $hp['width'] = $srcWidth;
 564                         }
 565                 }
 566
 567                 if ( $file && $hp['width'] ) {
 568                         # Create a resized image, without the additional thumbnail features
 569                         $thumb = $file->transform( $hp );
 570                 } else {
 571                         $thumb = false;
 572                 }
 573
 574                 if ( !$thumb ) {
 575                         $s = $this->makeBrokenImageLinkObj( $title );
 576                 } else {
 577                         $s = $thumb->toHtml( array(
 578                                 'desc-link' => true,
 579                                 'alt' => $fp['alt'],
 580                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 581                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false ) );
 582                 }
 583                 if ( '' != $fp['align'] ) {
 584                         $s = "<div class=\"float{$fp['align']}\"><span>{$s}</span></div>";
 585                 }
 586                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 587         }
 588
 589         /**
 590          * Make HTML for a thumbnail including image, border and caption
 591          * @param Title $title
 592          * @param File $file File object or false if it doesn't exist
 593          */
 594         function makeThumbLinkObj( Title $title, $file, $label = '', $alt, $align = 'right', $params = array(), $framed=false , $manualthumb = "" ) {
 595                 $frameParams = array(
 596                         'alt' => $alt,
 597                         'caption' => $label,
 598                         'align' => $align
 599                 );
 600                 if ( $framed ) $frameParams['framed'] = true;
 601                 if ( $manualthumb ) $frameParams['manualthumb'] = $manualthumb;
 602                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 603         }
 604
 605         function makeThumbLink2( Title $title, $file, $frameParams = array(), $handlerParams = array() ) {
 606                 global $wgStylePath, $wgContLang;
 607                 $exists = $file && $file->exists();
 608
 609                 # Shortcuts
 610                 $fp =& $frameParams;
 611                 $hp =& $handlerParams;
 612
 613                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 614                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 615                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 616                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 617
 618                 if ( empty( $hp['width'] ) ) {
 619                         // Reduce width for upright images when parameter 'upright' is used
 620                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 621                 }
 622                 $thumb = false;
 623
 624                 if ( !$exists ) {
 625                         $outerWidth = $hp['width'] + 2;
 626                 } else {
 627                         if ( isset( $fp['manualthumb'] ) ) {
 628                                 # Use manually specified thumbnail
 629                                 $manual_title = Title::makeTitleSafe( NS_IMAGE, $fp['manualthumb'] );
 630                                 if( $manual_title ) {
 631                                         $manual_img = wfFindFile( $manual_title );
 632                                         if ( $manual_img ) {
 633                                                 $thumb = $manual_img->getUnscaledThumb();
 634                                         } else {
 635                                                 $exists = false;
 636                                         }
 637                                 }
 638                         } elseif ( isset( $fp['framed'] ) ) {
 639                                 // Use image dimensions, don't scale
 640                                 $thumb = $file->getUnscaledThumb( $page );
 641                         } else {
 642                                 # Do not present an image bigger than the source, for bitmap-style images
 643                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 644                                 $srcWidth = $file->getWidth( $page );
 645                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 646                                         $hp['width'] = $srcWidth;
 647                                 }
 648                                 $thumb = $file->transform( $hp );
 649                         }
 650
 651                         if ( $thumb ) {
 652                                 $outerWidth = $thumb->getWidth() + 2;
 653                         } else {
 654                                 $outerWidth = $hp['width'] + 2;
 655                         }
 656                 }
 657
 658                 $query = $page ? 'page=' . urlencode( $page ) : '';
 659                 $url = $title->getLocalURL( $query );
 660
 661                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 662                 $magnifyalign = $wgContLang->isRTL() ? 'left' : 'right';
 663                 $textalign = $wgContLang->isRTL() ? ' style="text-align:right"' : '';
 664
 665                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 666                 if( !$exists ) {
 667                         $s .= $this->makeBrokenImageLinkObj( $title );
 668                         $zoomicon = '';
 669                 } elseif ( !$thumb ) {
 670                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 671                         $zoomicon = '';
 672                 } else {
 673                         $s .= $thumb->toHtml( array(
 674                                 'alt' => $fp['alt'],
 675                                 'img-class' => 'thumbimage',
 676                                 'desc-link' => true ) );
 677                         if ( isset( $fp['framed'] ) ) {
 678                                 $zoomicon="";
 679                         } else {
 680                                 $zoomicon =  '<div class="magnify" style="float:'.$magnifyalign.'">'.
 681                                         '<a href="'.$url.'" class="internal" title="'.$more.'">'.
 682                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 683                                         'width="15" height="11" alt="" /></a></div>';
 684                         }
 685                 }
 686                 $s .= '  <div class="thumbcaption"'.$textalign.'>'.$zoomicon.$fp['caption']."</div></div></div>";
 687                 return str_replace("\n", ' ', $s);
 688         }
 689
 690         /**
 691          * Make a "broken" link to an image
 692          *
 693          * @param Title $title Image title
 694          * @param string $text Link label
 695          * @param string $query Query string
 696          * @param string $trail Link trail
 697          * @param string $prefix Link prefix
 698          * @return string
 699          */
 700         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' ) {
 701                 global $wgEnableUploads;
 702                 if( $title instanceof Title ) {
 703                         wfProfileIn( __METHOD__ );
 704                         if( $wgEnableUploads ) {
 705                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 706                                 if( $text == '' )
 707                                         $text = htmlspecialchars( $title->getPrefixedText() );
 708                                 $q = 'wpDestFile=' . $title->getPartialUrl();
 709                                 if( $query != '' )
 710                                         $q .= '&' . $query;
 711                                 list( $inside, $trail ) = self::splitTrail( $trail );
 712                                 $style = $this->getInternalLinkAttributesObj( $title, $text, 'yes' );
 713                                 wfProfileOut( __METHOD__ );
 714                                 return '<a href="' . $upload->escapeLocalUrl( $q ) . '"'
 715                                         . $style . '>' . $prefix . $text . $inside . '</a>' . $trail;
 716                         } else {
 717                                 wfProfileOut( __METHOD__ );
 718                                 return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 719                         }
 720                 } else {
 721                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 722                 }
 723         }
 724
 725         /** @deprecated use Linker::makeMediaLinkObj() */
 726         function makeMediaLink( $name, $unused = '', $text = '' ) {
 727                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 728                 return $this->makeMediaLinkObj( $nt, $text );
 729         }
 730
 731         /**
 732          * Create a direct link to a given uploaded file.
 733          *
 734          * @param $title Title object.
 735          * @param $text  String: pre-sanitized HTML
 736          * @return string HTML
 737          *
 738          * @public
 739          * @todo Handle invalid or missing images better.
 740          */
 741         function makeMediaLinkObj( $title, $text = '' ) {
 742                 if( is_null( $title ) ) {
 743                         ### HOTFIX. Instead of breaking, return empty string.
 744                         return $text;
 745                 } else {
 746                         $img  = wfFindFile( $title );
 747                         if( $img ) {
 748                                 $url  = $img->getURL();
 749                                 $class = 'internal';
 750                         } else {
 751                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 752                                 $url = $upload->getLocalUrl( 'wpDestFile=' . urlencode( $title->getDbKey() ) );
 753                                 $class = 'new';
 754                         }
 755                         $alt = htmlspecialchars( $title->getText() );
 756                         if( $text == '' ) {
 757                                 $text = $alt;
 758                         }
 759                         $u = htmlspecialchars( $url );
 760                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 761                 }
 762         }
 763
 764         /** @todo document */
 765         function specialLink( $name, $key = '' ) {
 766                 global $wgContLang;
 767
 768                 if ( '' == $key ) { $key = strtolower( $name ); }
 769                 $pn = $wgContLang->ucfirst( $name );
 770                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 771                   wfMsg( $key ) );
 772         }
 773
 774         /** @todo document */
 775         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $ns = null ) {
 776                 $style = $this->getExternalLinkAttributes( $url, $text, 'external ' . $linktype );
 777                 global $wgNoFollowLinks, $wgNoFollowNsExceptions;
 778                 if( $wgNoFollowLinks && !(isset($ns) && in_array($ns, $wgNoFollowNsExceptions)) ) {
 779                         $style .= ' rel="nofollow"';
 780                 }
 781                 $url = htmlspecialchars( $url );
 782                 if( $escape ) {
 783                         $text = htmlspecialchars( $text );
 784                 }
 785                 return '<a href="'.$url.'"'.$style.'>'.$text.'</a>';
 786         }
 787
 788         /**
 789          * Make user link (or user contributions for unregistered users)
 790          * @param $userId   Integer: user id in database.
 791          * @param $userText String: user name in database
 792          * @return string HTML fragment
 793          * @private
 794          */
 795         function userLink( $userId, $userText ) {
 796                 $encName = htmlspecialchars( $userText );
 797                 if( $userId == 0 ) {
 798                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 799                         return $this->makeKnownLinkObj( $contribsPage,
 800                                 $encName);
 801                 } else {
 802                         $userPage = Title::makeTitle( NS_USER, $userText );
 803                         return $this->makeLinkObj( $userPage, $encName );
 804                 }
 805         }
 806
 807         /**
 808          * Generate standard user tool links (talk, contributions, block link, etc.)
 809          *
 810          * @param int $userId User identifier
 811          * @param string $userText User name or IP address
 812          * @param bool $redContribsWhenNoEdits Should the contributions link be red if the user has no edits?
 813          * @param int $flags Customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 814          * @return string
 815          */
 816         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0 ) {
 817                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 818                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 819                 $blockable = ( $wgSysopUserBans || 0 == $userId ) && !$flags & self::TOOL_LINKS_NOBLOCK;
 820
 821                 $items = array();
 822                 if( $talkable ) {
 823                         $items[] = $this->userTalkLink( $userId, $userText );
 824                 }
 825                 if( $userId ) {
 826                         // check if the user has an edit
 827                         if( $redContribsWhenNoEdits && User::edits( $userId ) == 0 ) {
 828                                 $style = " class='new'";
 829                         } else {
 830                                 $style = '';
 831                         }
 832                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 833
 834                         $items[] = $this->makeKnownLinkObj( $contribsPage, wfMsgHtml( 'contribslink' ), '', '', '', '', $style );
 835                 }
 836                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 837                         $items[] = $this->blockLink( $userId, $userText );
 838                 }
 839
 840                 if( $items ) {
 841                         return ' (' . implode( ' | ', $items ) . ')';
 842                 } else {
 843                         return '';
 844                 }
 845         }
 846
 847         /**
 848          * Alias for userToolLinks( $userId, $userText, true );
 849          */
 850         public function userToolLinksRedContribs( $userId, $userText ) {
 851                 return $this->userToolLinks( $userId, $userText, true );
 852         }
 853
 854
 855         /**
 856          * @param $userId Integer: user id in database.
 857          * @param $userText String: user name in database.
 858          * @return string HTML fragment with user talk link
 859          * @private
 860          */
 861         function userTalkLink( $userId, $userText ) {
 862                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 863                 $userTalkLink = $this->makeLinkObj( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 864                 return $userTalkLink;
 865         }
 866
 867         /**
 868          * @param $userId Integer: userid
 869          * @param $userText String: user name in database.
 870          * @return string HTML fragment with block link
 871          * @private
 872          */
 873         function blockLink( $userId, $userText ) {
 874                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 875                 $blockLink = $this->makeKnownLinkObj( $blockPage,
 876                         wfMsgHtml( 'blocklink' ) );
 877                 return $blockLink;
 878         }
 879
 880         /**
 881          * Generate a user link if the current user is allowed to view it
 882          * @param $rev Revision object.
 883          * @return string HTML
 884          */
 885         function revUserLink( $rev ) {
 886                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 887                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() );
 888                 } else {
 889                         $link = wfMsgHtml( 'rev-deleted-user' );
 890                 }
 891                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 892                         return '<span class="history-deleted">' . $link . '</span>';
 893                 }
 894                 return $link;
 895         }
 896
 897         /**
 898          * Generate a user tool link cluster if the current user is allowed to view it
 899          * @param $rev Revision object.
 900          * @return string HTML
 901          */
 902         function revUserTools( $rev ) {
 903                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 904                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() ) .
 905                                 ' ' .
 906                                 $this->userToolLinks( $rev->getRawUser(), $rev->getRawUserText() );
 907                 } else {
 908                         $link = wfMsgHtml( 'rev-deleted-user' );
 909                 }
 910                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 911                         return '<span class="history-deleted">' . $link . '</span>';
 912                 }
 913                 return $link;
 914         }
 915
 916         /**
 917          * This function is called by all recent changes variants, by the page history,
 918          * and by the user contributions list. It is responsible for formatting edit
 919          * comments. It escapes any HTML in the comment, but adds some CSS to format
 920          * auto-generated comments (from section editing) and formats [[wikilinks]].
 921          *
 922          * @author Erik Moeller <moeller@scireview.de>
 923          *
 924          * Note: there's not always a title to pass to this function.
 925          * Since you can't set a default parameter for a reference, I've turned it
 926          * temporarily to a value pass. Should be adjusted further. --brion
 927          *
 928          * @param string $comment
 929          * @param mixed $title Title object (to generate link to the section in autocomment) or null
 930          * @param bool $local Whether section links should refer to local page
 931          */
 932         function formatComment($comment, $title = NULL, $local = false) {
 933                 wfProfileIn( __METHOD__ );
 934
 935                 # Sanitize text a bit:
 936                 $comment = str_replace( "\n", " ", $comment );
 937                 $comment = htmlspecialchars( $comment );
 938
 939                 # Render autocomments and make links:
 940                 $comment = $this->formatAutoComments( $comment, $title, $local );
 941                 $comment = $this->formatLinksInComment( $comment );
 942
 943                 wfProfileOut( __METHOD__ );
 944                 return $comment;
 945         }
 946
 947         /**
 948          * The pattern for autogen comments is / * foo * /, which makes for
 949          * some nasty regex.
 950          * We look for all comments, match any text before and after the comment,
 951          * add a separator where needed and format the comment itself with CSS
 952          * Called by Linker::formatComment.
 953          *
 954          * @param $comment Comment text
 955          * @param $title An optional title object used to links to sections
 956          *
 957          * @todo Document the $local parameter.
 958          */
 959         private function formatAutocomments( $comment, $title = NULL, $local = false ) {
 960                 $match = array();
 961                 while (preg_match('!(.*)/\*\s*(.*?)\s*\*/(.*)!', $comment,$match)) {
 962                         $pre=$match[1];
 963                         $auto=$match[2];
 964                         $post=$match[3];
 965                         $link='';
 966                         if( $title ) {
 967                                 $section = $auto;
 968
 969                                 # Generate a valid anchor name from the section title.
 970                                 # Hackish, but should generally work - we strip wiki
 971                                 # syntax, including the magic [[: that is used to
 972                                 # "link rather than show" in case of images and
 973                                 # interlanguage links.
 974                                 $section = str_replace( '[[:', '', $section );
 975                                 $section = str_replace( '[[', '', $section );
 976                                 $section = str_replace( ']]', '', $section );
 977                                 if ( $local ) {
 978                                         $sectionTitle = Title::newFromText( '#' . $section);
 979                                 } else {
 980                                         $sectionTitle = wfClone( $title );
 981                                         $sectionTitle->mFragment = $section;
 982                                 }
 983                                 $link = $this->makeKnownLinkObj( $sectionTitle, wfMsg( 'sectionlink' ) );
 984                         }
 985                         $sep='-';
 986                         $auto=$link.$auto;
 987                         if($pre) { $auto = $sep.' '.$auto; }
 988                         if($post) { $auto .= ' '.$sep; }
 989                         $auto='<span class="autocomment">'.$auto.'</span>';
 990                         $comment=$pre.$auto.$post;
 991                 }
 992
 993                 return $comment;
 994         }
 995
 996         /**
 997          * Formats wiki links and media links in text; all other wiki formatting
 998          * is ignored
 999          *
1000          * @fixme doesn't handle sub-links as in image thumb texts like the main parser
1001          * @param string $comment Text to format links in
1002          * @return string
1003          */
1004         public function formatLinksInComment( $comment ) {
1005                 return preg_replace_callback(
1006                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1007                         array( $this, 'formatLinksInCommentCallback' ),
1008                         $comment );
1009         }
1010
1011         protected function formatLinksInCommentCallback( $match ) {
1012                 global $wgContLang;
1013
1014                 $medians = '(?:' . preg_quote( Namespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1015                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1016
1017                 $comment = $match[0];
1018
1019                 # Handle link renaming [[foo|text]] will show link as "text"
1020                 if( "" != $match[3] ) {
1021                         $text = $match[3];
1022                 } else {
1023                         $text = $match[1];
1024                 }
1025                 $submatch = array();
1026                 if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1027                         # Media link; trail not supported.
1028                         $linkRegexp = '/\[\[(.*?)\]\]/';
1029                         $thelink = $this->makeMediaLink( $submatch[1], "", $text );
1030                 } else {
1031                         # Other kind of link
1032                         if( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1033                                 $trail = $submatch[1];
1034                         } else {
1035                                 $trail = "";
1036                         }
1037                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1038                         if (isset($match[1][0]) && $match[1][0] == ':')
1039                                 $match[1] = substr($match[1], 1);
1040                         $thelink = $this->makeLink( $match[1], $text, "", $trail );
1041                 }
1042                 $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1043
1044                 return $comment;
1045         }
1046
1047         /**
1048          * Wrap a comment in standard punctuation and formatting if
1049          * it's non-empty, otherwise return empty string.
1050          *
1051          * @param string $comment
1052          * @param mixed $title Title object (to generate link to section in autocomment) or null
1053          * @param bool $local Whether section links should refer to local page
1054          *
1055          * @return string
1056          */
1057         function commentBlock( $comment, $title = NULL, $local = false ) {
1058                 // '*' used to be the comment inserted by the software way back
1059                 // in antiquity in case none was provided, here for backwards
1060                 // compatability, acc. to brion -ævar
1061                 if( $comment == '' || $comment == '*' ) {
1062                         return '';
1063                 } else {
1064                         $formatted = $this->formatComment( $comment, $title, $local );
1065                         return " <span class=\"comment\">($formatted)</span>";
1066                 }
1067         }
1068
1069         /**
1070          * Wrap and format the given revision's comment block, if the current
1071          * user is allowed to view it.
1072          *
1073          * @param Revision $rev
1074          * @param bool $local Whether section links should refer to local page
1075          * @return string HTML
1076          */
1077         function revComment( Revision $rev, $local = false ) {
1078                 if( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1079                         $block = $this->commentBlock( $rev->getRawComment(), $rev->getTitle(), $local );
1080                 } else {
1081                         $block = " <span class=\"comment\">" .
1082                                 wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1083                 }
1084                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1085                         return " <span class=\"history-deleted\">$block</span>";
1086                 }
1087                 return $block;
1088         }
1089
1090         /** @todo document */
1091         function tocIndent() {
1092                 return "\n<ul>";
1093         }
1094
1095         /** @todo document */
1096         function tocUnindent($level) {
1097                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
1098         }
1099
1100         /**
1101          * parameter level defines if we are on an indentation level
1102          */
1103         function tocLine( $anchor, $tocline, $tocnumber, $level ) {
1104                 return "\n<li class=\"toclevel-$level\"><a href=\"#" .
1105                         $anchor . '"><span class="tocnumber">' .
1106                         $tocnumber . '</span> <span class="toctext">' .
1107                         $tocline . '</span></a>';
1108         }
1109
1110         /** @todo document */
1111         function tocLineEnd() {
1112                 return "</li>\n";
1113         }
1114
1115         /** @todo document */
1116         function tocList($toc) {
1117                 global $wgJsMimeType;
1118                 $title = wfMsgHtml('toc') ;
1119                 return
1120                    '<table id="toc" class="toc" summary="' . $title .'"><tr><td>'
1121                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1122                  . $toc
1123                  # no trailing newline, script should not be wrapped in a
1124                  # paragraph
1125                  . "</ul>\n</td></tr></table>"
1126                  . '<script type="' . $wgJsMimeType . '">'
1127                  . ' if (window.showTocToggle) {'
1128                  . ' var tocShowText = "' . wfEscapeJsString( wfMsg('showtoc') ) . '";'
1129                  . ' var tocHideText = "' . wfEscapeJsString( wfMsg('hidetoc') ) . '";'
1130                  . ' showTocToggle();'
1131                  . ' } '
1132                  . "</script>\n";
1133         }
1134
1135         /**
1136          * Used to generate section edit links that point to "other" pages
1137          * (sections that are really part of included pages).
1138          *
1139          * @param $title Title string.
1140          * @param $section Integer: section number.
1141          */
1142         public function editSectionLinkForOther( $title, $section ) {
1143                 $title = Title::newFromText( $title );
1144                 return $this->doEditSectionLink( $title, $section, '', 'EditSectionLinkForOther' );
1145         }
1146
1147         /**
1148          * @param $nt Title object.
1149          * @param $section Integer: section number.
1150          * @param $hint Link String: title, or default if omitted or empty
1151          */
1152         public function editSectionLink( Title $nt, $section, $hint='' ) {
1153                 if( $hint != '' ) {
1154                         $hint = wfMsgHtml( 'editsectionhint', htmlspecialchars( $hint ) );
1155                         $hint = " title=\"$hint\"";
1156                 }
1157                 return $this->doEditSectionLink( $nt, $section, $hint, 'EditSectionLink' );
1158         }
1159
1160         /**
1161          * Implement editSectionLink and editSectionLinkForOther.
1162          *
1163          * @param $nt      Title object
1164          * @param $section Integer, section number
1165          * @param $hint    String, for HTML title attribute
1166          * @param $hook    String, name of hook to run
1167          * @return         String, HTML to use for edit link
1168          */
1169         protected function doEditSectionLink( Title $nt, $section, $hint, $hook ) {
1170                 global $wgContLang;
1171                 $editurl = '&section='.$section;
1172                 $url = $this->makeKnownLinkObj(
1173                         $nt,
1174                         wfMsg('editsection'),
1175                         'action=edit'.$editurl,
1176                         '', '', '',  $hint
1177                 );
1178                 $result = null;
1179
1180                 // The two hooks have slightly different interfaces . . .
1181                 if( $hook == 'EditSectionLink' ) {
1182                         wfRunHooks( $hook, array( &$this, $nt, $section, $hint, $url, &$result ) );
1183                 } elseif( $hook == 'EditSectionLinkForOther' ) {
1184                         wfRunHooks( $hook, array( &$this, $nt, $section, $url, &$result ) );
1185                 }
1186
1187                 // For reverse compatibility, add the brackets *after* the hook is run,
1188                 // and even add them to hook-provided text.
1189                 if( is_null( $result ) ) {
1190                         $result = wfMsg( 'editsection-brackets', $url );
1191                 } else {
1192                         $result = wfMsg( 'editsection-brackets', $result );
1193                 }
1194                 return "<span class=\"editsection\">$result</span>";
1195         }
1196
1197         /**
1198          * Create a headline for content
1199          *
1200          * @param int    $level   The level of the headline (1-6)
1201          * @param string $attribs Any attributes for the headline, starting with a space and ending with '>'
1202          *                        This *must* be at least '>' for no attribs
1203          * @param string $anchor  The anchor to give the headline (the bit after the #)
1204          * @param string $text    The text of the header
1205          * @param string $link    HTML to add for the section edit link
1206          *
1207          * @return string HTML headline
1208          */
1209         public function makeHeadline( $level, $attribs, $anchor, $text, $link ) {
1210                 return "<a name=\"$anchor\"></a><h$level$attribs$link <span class=\"mw-headline\">$text</span></h$level>";
1211         }
1212
1213         /**
1214          * Split a link trail, return the "inside" portion and the remainder of the trail
1215          * as a two-element array
1216          *
1217          * @static
1218          */
1219         static function splitTrail( $trail ) {
1220                 static $regex = false;
1221                 if ( $regex === false ) {
1222                         global $wgContLang;
1223                         $regex = $wgContLang->linkTrail();
1224                 }
1225                 $inside = '';
1226                 if ( '' != $trail ) {
1227                         $m = array();
1228                         if ( preg_match( $regex, $trail, $m ) ) {
1229                                 $inside = $m[1];
1230                                 $trail = $m[2];
1231                         }
1232                 }
1233                 return array( $inside, $trail );
1234         }
1235
1236         /**
1237          * Generate a rollback link for a given revision.  Currently it's the
1238          * caller's responsibility to ensure that the revision is the top one. If
1239          * it's not, of course, the user will get an error message.
1240          *
1241          * If the calling page is called with the parameter &bot=1, all rollback
1242          * links also get that parameter. It causes the edit itself and the rollback
1243          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1244          * changes, so this allows sysops to combat a busy vandal without bothering
1245          * other users.
1246          *
1247          * @param Revision $rev
1248          */
1249         function generateRollback( $rev ) {
1250                 return '<span class="mw-rollback-link">['
1251                         . $this->buildRollbackLink( $rev )
1252                         . ']</span>';
1253         }
1254
1255         /**
1256          * Build a raw rollback link, useful for collections of "tool" links
1257          *
1258          * @param Revision $rev
1259          * @return string
1260          */
1261         public function buildRollbackLink( $rev ) {
1262                 global $wgRequest, $wgUser;
1263                 $title = $rev->getTitle();
1264                 $extra  = $wgRequest->getBool( 'bot' ) ? '&bot=1' : '';
1265                 $extra .= '&token=' . urlencode( $wgUser->editToken( array( $title->getPrefixedText(),
1266                         $rev->getUserText() ) ) );
1267                 return $this->makeKnownLinkObj(
1268                         $title,
1269                         wfMsgHtml( 'rollbacklink' ),
1270                         'action=rollback&from=' . urlencode( $rev->getUserText() ) . $extra
1271                 );
1272         }
1273
1274         /**
1275          * Returns HTML for the "templates used on this page" list.
1276          *
1277          * @param array $templates Array of templates from Article::getUsedTemplate
1278          * or similar
1279          * @param bool $preview Whether this is for a preview
1280          * @param bool $section Whether this is for a section edit
1281          * @return string HTML output
1282          */
1283         public function formatTemplates( $templates, $preview = false, $section = false) {
1284                 global $wgUser;
1285                 wfProfileIn( __METHOD__ );
1286
1287                 $sk = $wgUser->getSkin();
1288
1289                 $outText = '';
1290                 if ( count( $templates ) > 0 ) {
1291                         # Do a batch existence check
1292                         $batch = new LinkBatch;
1293                         foreach( $templates as $title ) {
1294                                 $batch->addObj( $title );
1295                         }
1296                         $batch->execute();
1297
1298                         # Construct the HTML
1299                         $outText = '<div class="mw-templatesUsedExplanation">';
1300                         if ( $preview ) {
1301                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ) );
1302                         } elseif ( $section ) {
1303                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ) );
1304                         } else {
1305                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ) );
1306                         }
1307                         $outText .= '</div><ul>';
1308
1309                         foreach ( $templates as $titleObj ) {
1310                                 $r = $titleObj->getRestrictions( 'edit' );
1311                                 if ( in_array( 'sysop', $r ) ) {
1312                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1313                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1314                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1315                                 } else {
1316                                         $protected = '';
1317                                 }
1318                                 $outText .= '<li>' . $sk->makeLinkObj( $titleObj ) . ' ' . $protected . '</li>';
1319                         }
1320                         $outText .= '</ul>';
1321                 }
1322                 wfProfileOut( __METHOD__  );
1323                 return $outText;
1324         }
1325
1326         /**
1327          * Format a size in bytes for output, using an appropriate
1328          * unit (B, KB, MB or GB) according to the magnitude in question
1329          *
1330          * @param $size Size to format
1331          * @return string
1332          */
1333         public function formatSize( $size ) {
1334                 global $wgLang;
1335                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1336         }
1337
1338         /**
1339          * Given the id of an interface element, constructs the appropriate title
1340          * and accesskey attributes from the system messages.  (Note, this is usu-
1341          * ally the id but isn't always, because sometimes the accesskey needs to
1342          * go on a different element than the id, for reverse-compatibility, etc.)
1343          *
1344          * @param string $name Id of the element, minus prefixes.
1345          * @return string title and accesskey attributes, ready to drop in an
1346          *   element (e.g., ' title="This does something [x]" accesskey="x"').
1347          */
1348         public function tooltipAndAccesskey($name) {
1349                 $fname="Linker::tooltipAndAccesskey";
1350                 wfProfileIn($fname);
1351                 $out = '';
1352
1353                 $tooltip = wfMsg('tooltip-'.$name);
1354                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1355                         // Compatibility: formerly some tooltips had [alt-.] hardcoded
1356                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1357                         $out .= ' title="'.htmlspecialchars($tooltip);
1358                 }
1359                 $accesskey = wfMsg('accesskey-'.$name);
1360                 if ($accesskey && $accesskey != '-' && !wfEmptyMsg('accesskey-'.$name, $accesskey)) {
1361                         if ($out) $out .= " [$accesskey]\" accesskey=\"$accesskey\"";
1362                         else $out .= " title=\"[$accesskey]\" accesskey=\"$accesskey\"";
1363                 } elseif ($out) {
1364                         $out .= '"';
1365                 }
1366                 wfProfileOut($fname);
1367                 return $out;
1368         }
1369
1370         /**
1371          * Given the id of an interface element, constructs the appropriate title
1372          * attribute from the system messages.  (Note, this is usually the id but
1373          * isn't always, because sometimes the accesskey needs to go on a different
1374          * element than the id, for reverse-compatibility, etc.)
1375          *
1376          * @param string $name Id of the element, minus prefixes.
1377          * @return string title attribute, ready to drop in an element
1378          * (e.g., ' title="This does something"').
1379          */
1380         public function tooltip($name) {
1381                 $out = '';
1382
1383                 $tooltip = wfMsg('tooltip-'.$name);
1384                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1385                         $out = ' title="'.htmlspecialchars($tooltip).'"';
1386                 }
1387
1388                 return $out;
1389         }
1390 }