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, $class='' ) {
  56                 $link = urldecode( $link );
  57                 $link = str_replace( '_', ' ', $link );
  58                 $link = htmlspecialchars( $link );
  59                 $r = ($class != '') ? ' class="' . htmlspecialchars( $class ) . '"' : '';
  60                 $r .= " title=\"{$link}\"";
  61                 return $r;
  62         }
  63
  64         /**
  65          * @param $nt Title object.
  66          * @param $text String: FIXME
  67          * @param $class String: CSS class of the link, default ''.
  68          */
  69         function getInternalLinkAttributesObj( &$nt, $text, $class = '', $titleAttr = false ) {
  70                 $r = ($class != '') ? ' class="' . htmlspecialchars( $class ) . '"' : '';
  71                 if ( $titleAttr === false ) {
  72                         $r .= ' title="' . $nt->getEscapedText() . '"';
  73                 } else {
  74                         $r .= ' title="' . htmlspecialchars( $titleAttr ) . '"';
  75                 }
  76                 return $r;
  77         }
  78
  79         /**
  80          * Return the CSS colour of a known link
  81          *
  82          * @param mixed $s
  83          * @param integer $threshold user defined threshold
  84          * @return string CSS class
  85          */
  86         function getLinkColour( $s, $threshold ) {
  87                 if( $s === false ) {
  88                         return '';
  89                 }
  90
  91                 $colour = '';
  92                 if ( !empty( $s->page_is_redirect ) ) {
  93                         # Page is a redirect
  94                         $colour = 'mw-redirect';
  95                 } elseif ( $threshold > 0 && $s->page_len < $threshold && Namespace::isContent( $s->page_namespace ) ) {
  96                         # Page is a stub
  97                         $colour = 'stub';
  98                 }
  99                 return $colour;
 100         }
 101
 102         /**
 103          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
 104          * it if you already have a title object handy. See makeLinkObj for further documentation.
 105          *
 106          * @param $title String: the text of the title
 107          * @param $text  String: link text
 108          * @param $query String: optional query part
 109          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 110          *                      be included in the link text. Other characters will be appended after
 111          *                      the end of the link.
 112          */
 113         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
 114                 wfProfileIn( __METHOD__ );
 115                 $nt = Title::newFromText( $title );
 116                 if ( $nt instanceof Title ) {
 117                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
 118                 } else {
 119                         wfDebug( 'Invalid title passed to Linker::makeLink(): "'.$title."\"\n" );
 120                         $result = $text == "" ? $title : $text;
 121                 }
 122
 123                 wfProfileOut( __METHOD__ );
 124                 return $result;
 125         }
 126
 127         /**
 128          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
 129          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
 130          *
 131          * @param $title String: the text of the title
 132          * @param $text  String: link text
 133          * @param $query String: optional query part
 134          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 135          *                      be included in the link text. Other characters will be appended after
 136          *                      the end of the link.
 137          */
 138         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
 139                 $nt = Title::newFromText( $title );
 140                 if ( $nt instanceof Title ) {
 141                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
 142                 } else {
 143                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "'.$title."\"\n" );
 144                         return $text == '' ? $title : $text;
 145                 }
 146         }
 147
 148         /**
 149          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
 150          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
 151          *
 152          * @param string $title The text of the title
 153          * @param string $text Link text
 154          * @param string $query Optional query part
 155          * @param string $trail Optional trail. Alphabetic characters at the start of this string will
 156          *                      be included in the link text. Other characters will be appended after
 157          *                      the end of the link.
 158          */
 159         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
 160                 $nt = Title::newFromText( $title );
 161                 if ( $nt instanceof Title ) {
 162                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
 163                 } else {
 164                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "'.$title."\"\n" );
 165                         return $text == '' ? $title : $text;
 166                 }
 167         }
 168
 169         /**
 170          * @deprecated use makeColouredLinkObj
 171          *
 172          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
 173          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
 174          *
 175          * @param $title String: the text of the title
 176          * @param $text  String: link text
 177          * @param $query String: optional query part
 178          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 179          *                      be included in the link text. Other characters will be appended after
 180          *                      the end of the link.
 181          */
 182         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
 183                 $nt = Title::newFromText( $title );
 184                 if ( $nt instanceof Title ) {
 185                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
 186                 } else {
 187                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "'.$title."\"\n" );
 188                         return $text == '' ? $title : $text;
 189                 }
 190         }
 191
 192         /**
 193          * Make a link for a title which may or may not be in the database. If you need to
 194          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
 195          * call to this will result in a DB query.
 196          *
 197          * @param $nt     Title: the title object to make the link from, e.g. from
 198          *                      Title::newFromText.
 199          * @param $text  String: link text
 200          * @param $query String: optional query part
 201          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 202          *                      be included in the link text. Other characters will be appended after
 203          *                      the end of the link.
 204          * @param $prefix String: optional prefix. As trail, only before instead of after.
 205          */
 206         function makeLinkObj( $nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
 207                 global $wgUser;
 208                 wfProfileIn( __METHOD__ );
 209
 210                 if ( !$nt instanceof Title ) {
 211                         # Fail gracefully
 212                         wfProfileOut( __METHOD__ );
 213                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 214                 }
 215
 216                 if ( $nt->isExternal() ) {
 217                         $u = $nt->getFullURL();
 218                         $link = $nt->getPrefixedURL();
 219                         if ( '' == $text ) { $text = $nt->getPrefixedText(); }
 220                         $style = $this->getInterwikiLinkAttributes( $link, $text, 'extiw' );
 221
 222                         $inside = '';
 223                         if ( '' != $trail ) {
 224                                 $m = array();
 225                                 if ( preg_match( '/^([a-z]+)(.*)$$/sD', $trail, $m ) ) {
 226                                         $inside = $m[1];
 227                                         $trail = $m[2];
 228                                 }
 229                         }
 230                         $t = "<a href=\"{$u}\"{$style}>{$text}{$inside}</a>";
 231
 232                         wfProfileOut( __METHOD__ );
 233                         return $t;
 234                 } elseif ( $nt->isAlwaysKnown() ) {
 235                         # Image links, special page links and self-links with fragements are always known.
 236                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 237                 } else {
 238                         wfProfileIn( __METHOD__.'-immediate' );
 239
 240                         # Handles links to special pages which do not exist in the database:
 241                         if( $nt->getNamespace() == NS_SPECIAL ) {
 242                                 if( SpecialPage::exists( $nt->getDBkey() ) ) {
 243                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 244                                 } else {
 245                                         $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 246                                 }
 247                                 wfProfileOut( __METHOD__.'-immediate' );
 248                                 wfProfileOut( __METHOD__ );
 249                                 return $retVal;
 250                         }
 251
 252                         # Work out link colour immediately
 253                         $aid = $nt->getArticleID() ;
 254                         if ( 0 == $aid ) {
 255                                 $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 256                         } else {
 257                                 $colour = '';
 258                                 if ( $nt->isContentPage() ) {
 259                                         # FIXME: This is stupid, we should combine this query with
 260                                         # the Title::getArticleID() query above.
 261                                         $threshold = $wgUser->getOption('stubthreshold');
 262                                         $dbr = wfGetDB( DB_SLAVE );
 263                                         $s = $dbr->selectRow(
 264                                                 array( 'page' ),
 265                                                 array( 'page_len', 'page_is_redirect', 'page_namespace' ),
 266                                                 array( 'page_id' => $aid ), __METHOD__ ) ;
 267                                         $colour = $this->getLinkColour( $s, $threshold );
 268                                 }
 269                                 $retVal = $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 270                         }
 271                         wfProfileOut( __METHOD__.'-immediate' );
 272                 }
 273                 wfProfileOut( __METHOD__ );
 274                 return $retVal;
 275         }
 276
 277         /**
 278          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
 279          * it doesn't have to do a database query. It's also valid for interwiki titles and special
 280          * pages.
 281          *
 282          * @param $nt Title object of target page
 283          * @param $text   String: text to replace the title
 284          * @param $query  String: link target
 285          * @param $trail  String: text after link
 286          * @param $prefix String: text before link text
 287          * @param $aprops String: extra attributes to the a-element
 288          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
 289          * @return the a-element
 290          */
 291         function makeKnownLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
 292                 wfProfileIn( __METHOD__ );
 293
 294                 if ( !$nt instanceof Title ) {
 295                         # Fail gracefully
 296                         wfProfileOut( __METHOD__ );
 297                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 298                 }
 299
 300                 $u = $nt->escapeLocalURL( $query );
 301                 if ( $nt->getFragment() != '' ) {
 302                         if( $nt->getPrefixedDbkey() == '' ) {
 303                                 $u = '';
 304                                 if ( '' == $text ) {
 305                                         $text = htmlspecialchars( $nt->getFragment() );
 306                                 }
 307                         }
 308                         $u .= $nt->getFragmentForURL();
 309                 }
 310                 if ( $text == '' ) {
 311                         $text = htmlspecialchars( $nt->getPrefixedText() );
 312                 }
 313                 if ( $style == '' ) {
 314                         $style = $this->getInternalLinkAttributesObj( $nt, $text );
 315                 }
 316
 317                 if ( $aprops !== '' ) $aprops = ' ' . $aprops;
 318
 319                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 320                 $r = "<a href=\"{$u}\"{$style}{$aprops}>{$prefix}{$text}{$inside}</a>{$trail}";
 321                 wfProfileOut( __METHOD__ );
 322                 return $r;
 323         }
 324
 325         /**
 326          * Make a red link to the edit page of a given title.
 327          *
 328          * @param $nt Title object of the target page
 329          * @param $text  String: Link text
 330          * @param $query String: Optional query part
 331          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
 332          *                      be included in the link text. Other characters will be appended after
 333          *                      the end of the link.
 334          */
 335         function makeBrokenLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 336                 wfProfileIn( __METHOD__ );
 337
 338                 if ( !$nt instanceof Title ) {
 339                         # Fail gracefully
 340                         wfProfileOut( __METHOD__ );
 341                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 342                 }
 343
 344                 if( $nt->getNamespace() == NS_SPECIAL ) {
 345                         $q = $query;
 346                 } else if ( '' == $query ) {
 347                         $q = 'action=edit&redlink=1';
 348                 } else {
 349                         $q = 'action=edit&redlink=1&'.$query;
 350                 }
 351                 $u = $nt->escapeLocalURL( $q );
 352
 353                 $titleText = $nt->getPrefixedText();
 354                 if ( '' == $text ) {
 355                         $text = htmlspecialchars( $titleText );
 356                 }
 357                 $titleAttr = wfMsg( 'red-link-title', $titleText );
 358                 $style = $this->getInternalLinkAttributesObj( $nt, $text, 'new', $titleAttr );
 359                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 360
 361                 wfRunHooks( 'BrokenLink', array( &$this, $nt, $query, &$u, &$style, &$prefix, &$text, &$inside, &$trail ) );
 362                 $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 363
 364                 wfProfileOut( __METHOD__ );
 365                 return $s;
 366         }
 367
 368         /**
 369          * @deprecated use makeColouredLinkObj
 370          *
 371          * Make a brown link to a short article.
 372          *
 373          * @param $nt Title object of the target page
 374          * @param $text  String: link text
 375          * @param $query String: optional query part
 376          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 377          *                      be included in the link text. Other characters will be appended after
 378          *                      the end of the link.
 379          */
 380         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 381                 return $this->makeColouredLinkObj( $nt, 'stub', $text, $query, $trail, $prefix );
 382         }
 383
 384         /**
 385          * Make a coloured link.
 386          *
 387          * @param $nt Title object of the target page
 388          * @param $colour Integer: colour of the link
 389          * @param $text   String:  link text
 390          * @param $query  String:  optional query part
 391          * @param $trail  String:  optional trail. Alphabetic characters at the start of this string will
 392          *                      be included in the link text. Other characters will be appended after
 393          *                      the end of the link.
 394          */
 395         function makeColouredLinkObj( $nt, $colour, $text = '', $query = '', $trail = '', $prefix = '' ) {
 396
 397                 if($colour != ''){
 398                         $style = $this->getInternalLinkAttributesObj( $nt, $text, $colour );
 399                 } else $style = '';
 400                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
 401         }
 402
 403         /**
 404          * Generate either a normal exists-style link or a stub link, depending
 405          * on the given page size.
 406          *
 407          * @param $size Integer
 408          * @param $nt Title object.
 409          * @param $text String
 410          * @param $query String
 411          * @param $trail String
 412          * @param $prefix String
 413          * @return string HTML of link
 414          */
 415         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 416                 global $wgUser;
 417                 $threshold = intval( $wgUser->getOption( 'stubthreshold' ) );
 418                 $colour = ( $size < $threshold ) ? 'stub' : '';
 419                 return $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 420         }
 421
 422         /**
 423          * Make appropriate markup for a link to the current article. This is currently rendered
 424          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 425          * despite $query not being used.
 426          */
 427         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 428                 if ( '' == $text ) {
 429                         $text = htmlspecialchars( $nt->getPrefixedText() );
 430                 }
 431                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 432                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 433         }
 434
 435         /** @todo document */
 436         function fnamePart( $url ) {
 437                 $basename = strrchr( $url, '/' );
 438                 if ( false === $basename ) {
 439                         $basename = $url;
 440                 } else {
 441                         $basename = substr( $basename, 1 );
 442                 }
 443                 return htmlspecialchars( $basename );
 444         }
 445
 446         /** Obsolete alias */
 447         function makeImage( $url, $alt = '' ) {
 448                 return $this->makeExternalImage( $url, $alt );
 449         }
 450
 451         /** @todo document */
 452         function makeExternalImage( $url, $alt = '' ) {
 453                 if ( '' == $alt ) {
 454                         $alt = $this->fnamePart( $url );
 455                 }
 456                 $s = '<img src="'.$url.'" alt="'.$alt.'" />';
 457                 return $s;
 458         }
 459
 460         /**
 461          * Creates the HTML source for images
 462          * @deprecated use makeImageLink2
 463          *
 464          * @param object $title
 465          * @param string $label label text
 466          * @param string $alt alt text
 467          * @param string $align horizontal alignment: none, left, center, right)
 468          * @param array $handlerParams Parameters to be passed to the media handler
 469          * @param boolean $framed shows image in original size in a frame
 470          * @param boolean $thumb shows image as thumbnail in a frame
 471          * @param string $manualthumb image name for the manual thumbnail
 472          * @param string $valign vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
 473          * @param string $time, timestamp of the file, set as false for current
 474          * @return string
 475          */
 476         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(), $framed = false,
 477           $thumb = false, $manualthumb = '', $valign = '', $time = false )
 478         {
 479                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
 480                 if ( $align ) {
 481                         $frameParams['align'] = $align;
 482                 }
 483                 if ( $framed ) {
 484                         $frameParams['framed'] = true;
 485                 }
 486                 if ( $thumb ) {
 487                         $frameParams['thumbnail'] = true;
 488                 }
 489                 if ( $manualthumb ) {
 490                         $frameParams['manualthumb'] = $manualthumb;
 491                 }
 492                 if ( $valign ) {
 493                         $frameParams['valign'] = $valign;
 494                 }
 495                 $file = wfFindFile( $title, $time );
 496                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams, $time );
 497         }
 498
 499         /**
 500          * Given parameters derived from [[Image:Foo|options...]], generate the
 501          * HTML that that syntax inserts in the page.
 502          *
 503          * @param Title $title Title object
 504          * @param File $file File object, or false if it doesn't exist
 505          *
 506          * @param array $frameParams Associative array of parameters external to the media handler.
 507          *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
 508          *     will often be false.
 509          *          thumbnail       If present, downscale and frame
 510          *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
 511          *          framed          Shows image in original size in a frame
 512          *          frameless       Downscale but don't frame
 513          *          upright         If present, tweak default sizes for portrait orientation
 514          *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
 515          *          border          If present, show a border around the image
 516          *          align           Horizontal alignment (left, right, center, none)
 517          *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
 518          *                          bottom, text-bottom)
 519          *          alt             Alternate text for image (i.e. alt attribute). Plain text.
 520          *          caption         HTML for image caption.
 521          *
 522          * @param array $handlerParams Associative array of media handler parameters, to be passed
 523          *       to transform(). Typical keys are "width" and "page".
 524          * @param string $time, timestamp of the file, set as false for current
 525          * @return string HTML for an image, with links, wrappers, etc.
 526          */
 527         function makeImageLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false ) {
 528                 $res = null;
 529                 if( !wfRunHooks( 'ImageBeforeProduceHTML', array( &$this, &$title,
 530                 &$file, &$frameParams, &$handlerParams, &$time, &$res ) ) ) {
 531                         return $res;
 532                 }
 533
 534                 global $wgContLang, $wgUser, $wgThumbLimits, $wgThumbUpright;
 535                 if ( $file && !$file->allowInlineDisplay() ) {
 536                         wfDebug( __METHOD__.': '.$title->getPrefixedDBkey()." does not allow inline display\n" );
 537                         return $this->makeKnownLinkObj( $title );
 538                 }
 539
 540                 // Shortcuts
 541                 $fp =& $frameParams;
 542                 $hp =& $handlerParams;
 543
 544                 // Clean up parameters
 545                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 546                 if ( !isset( $fp['align'] ) ) $fp['align'] = '';
 547                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 548
 549                 $prefix = $postfix = '';
 550
 551                 if ( 'center' == $fp['align'] )
 552                 {
 553                         $prefix  = '<div class="center">';
 554                         $postfix = '</div>';
 555                         $fp['align']   = 'none';
 556                 }
 557                 if ( $file && !isset( $hp['width'] ) ) {
 558                         $hp['width'] = $file->getWidth( $page );
 559
 560                         if( isset( $fp['thumbnail'] ) || isset( $fp['framed'] ) || isset( $fp['frameless'] ) || !$hp['width'] ) {
 561                                 $wopt = $wgUser->getOption( 'thumbsize' );
 562
 563                                 if( !isset( $wgThumbLimits[$wopt] ) ) {
 564                                          $wopt = User::getDefaultOption( 'thumbsize' );
 565                                 }
 566
 567                                 // Reduce width for upright images when parameter 'upright' is used
 568                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 569                                         $fp['upright'] = $wgThumbUpright;
 570                                 }
 571                                 // Use width which is smaller: real image width or user preference width
 572                                 // 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
 573                                 $prefWidth = isset( $fp['upright'] ) ?
 574                                         round( $wgThumbLimits[$wopt] * $fp['upright'], -1 ) :
 575                                         $wgThumbLimits[$wopt];
 576                                 if ( $hp['width'] <= 0 || $prefWidth < $hp['width'] ) {
 577                                         $hp['width'] = $prefWidth;
 578                                 }
 579                         }
 580                 }
 581
 582                 if ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) {
 583
 584                         # Create a thumbnail. Alignment depends on language
 585                         # writing direction, # right aligned for left-to-right-
 586                         # languages ("Western languages"), left-aligned
 587                         # for right-to-left-languages ("Semitic languages")
 588                         #
 589                         # If  thumbnail width has not been provided, it is set
 590                         # to the default user option as specified in Language*.php
 591                         if ( $fp['align'] == '' ) {
 592                                 $fp['align'] = $wgContLang->isRTL() ? 'left' : 'right';
 593                         }
 594                         return $prefix.$this->makeThumbLink2( $title, $file, $fp, $hp, $time ).$postfix;
 595                 }
 596
 597                 if ( $file && isset( $fp['frameless'] ) ) {
 598                         $srcWidth = $file->getWidth( $page );
 599                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 600                         # This is the same behaviour as the "thumb" option does it already.
 601                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 602                                 $hp['width'] = $srcWidth;
 603                         }
 604                 }
 605
 606                 if ( $file && $hp['width'] ) {
 607                         # Create a resized image, without the additional thumbnail features
 608                         $thumb = $file->transform( $hp );
 609                 } else {
 610                         $thumb = false;
 611                 }
 612
 613                 if ( !$thumb ) {
 614                         $s = $this->makeBrokenImageLinkObj( $title, '', '', '', '', $time==true );
 615                 } else {
 616                         $s = $thumb->toHtml( array(
 617                                 'desc-link' => true,
 618                                 'alt' => $fp['alt'],
 619                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 620                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false ) );
 621                 }
 622                 if ( '' != $fp['align'] ) {
 623                         $s = "<div class=\"float{$fp['align']}\"><span>{$s}</span></div>";
 624                 }
 625                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 626         }
 627
 628         /**
 629          * Make HTML for a thumbnail including image, border and caption
 630          * @param Title $title
 631          * @param File $file File object or false if it doesn't exist
 632          */
 633         function makeThumbLinkObj( Title $title, $file, $label = '', $alt, $align = 'right', $params = array(), $framed=false , $manualthumb = "" ) {
 634                 $frameParams = array(
 635                         'alt' => $alt,
 636                         'caption' => $label,
 637                         'align' => $align
 638                 );
 639                 if ( $framed ) $frameParams['framed'] = true;
 640                 if ( $manualthumb ) $frameParams['manualthumb'] = $manualthumb;
 641                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 642         }
 643
 644         function makeThumbLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false ) {
 645                 global $wgStylePath, $wgContLang;
 646                 $exists = $file && $file->exists();
 647
 648                 # Shortcuts
 649                 $fp =& $frameParams;
 650                 $hp =& $handlerParams;
 651
 652                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 653                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 654                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 655                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 656
 657                 if ( empty( $hp['width'] ) ) {
 658                         // Reduce width for upright images when parameter 'upright' is used
 659                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 660                 }
 661                 $thumb = false;
 662
 663                 if ( !$exists ) {
 664                         $outerWidth = $hp['width'] + 2;
 665                 } else {
 666                         if ( isset( $fp['manualthumb'] ) ) {
 667                                 # Use manually specified thumbnail
 668                                 $manual_title = Title::makeTitleSafe( NS_IMAGE, $fp['manualthumb'] );
 669                                 if( $manual_title ) {
 670                                         $manual_img = wfFindFile( $manual_title );
 671                                         if ( $manual_img ) {
 672                                                 $thumb = $manual_img->getUnscaledThumb();
 673                                         } else {
 674                                                 $exists = false;
 675                                         }
 676                                 }
 677                         } elseif ( isset( $fp['framed'] ) ) {
 678                                 // Use image dimensions, don't scale
 679                                 $thumb = $file->getUnscaledThumb( $page );
 680                         } else {
 681                                 # Do not present an image bigger than the source, for bitmap-style images
 682                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 683                                 $srcWidth = $file->getWidth( $page );
 684                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 685                                         $hp['width'] = $srcWidth;
 686                                 }
 687                                 $thumb = $file->transform( $hp );
 688                         }
 689
 690                         if ( $thumb ) {
 691                                 $outerWidth = $thumb->getWidth() + 2;
 692                         } else {
 693                                 $outerWidth = $hp['width'] + 2;
 694                         }
 695                 }
 696
 697                 $query = $page ? 'page=' . urlencode( $page ) : '';
 698                 $url = $title->getLocalURL( $query );
 699
 700                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 701
 702                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 703                 if( !$exists ) {
 704                         $s .= $this->makeBrokenImageLinkObj( $title, '', '', '', '', $time==true );
 705                         $zoomicon = '';
 706                 } elseif ( !$thumb ) {
 707                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 708                         $zoomicon = '';
 709                 } else {
 710                         $s .= $thumb->toHtml( array(
 711                                 'alt' => $fp['alt'],
 712                                 'img-class' => 'thumbimage',
 713                                 'desc-link' => true ) );
 714                         if ( isset( $fp['framed'] ) ) {
 715                                 $zoomicon="";
 716                         } else {
 717                                 $zoomicon =  '<div class="magnify">'.
 718                                         '<a href="'.$url.'" class="internal" title="'.$more.'">'.
 719                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 720                                         'width="15" height="11" alt="" /></a></div>';
 721                         }
 722                 }
 723                 $s .= '  <div class="thumbcaption">'.$zoomicon.$fp['caption']."</div></div></div>";
 724                 return str_replace("\n", ' ', $s);
 725         }
 726
 727         /**
 728          * Make a "broken" link to an image
 729          *
 730          * @param Title $title Image title
 731          * @param string $text Link label
 732          * @param string $query Query string
 733          * @param string $trail Link trail
 734          * @param string $prefix Link prefix
 735          * @param bool $time, a file of a certain timestamp was requested
 736          * @return string
 737          */
 738         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '', $time = false ) {
 739                 global $wgEnableUploads;
 740                 if( $title instanceof Title ) {
 741                         wfProfileIn( __METHOD__ );
 742                         $currentExists = $time ? ( wfFindFile( $title ) != false ) : false;
 743                         if( $wgEnableUploads && !$currentExists ) {
 744                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 745                                 if( $text == '' )
 746                                         $text = htmlspecialchars( $title->getPrefixedText() );
 747                                 $redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
 748                                 if( $redir ) {
 749                                         return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 750                                 }
 751                                 $q = 'wpDestFile=' . $title->getPartialUrl();
 752                                 if( $query != '' )
 753                                         $q .= '&' . $query;
 754                                 list( $inside, $trail ) = self::splitTrail( $trail );
 755                                 $style = $this->getInternalLinkAttributesObj( $title, $text, 'new' );
 756                                 wfProfileOut( __METHOD__ );
 757                                 return '<a href="' . $upload->escapeLocalUrl( $q ) . '"'
 758                                         . $style . '>' . $prefix . $text . $inside . '</a>' . $trail;
 759                         } else {
 760                                 wfProfileOut( __METHOD__ );
 761                                 return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 762                         }
 763                 } else {
 764                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 765                 }
 766         }
 767
 768         /** @deprecated use Linker::makeMediaLinkObj() */
 769         function makeMediaLink( $name, $unused = '', $text = '' ) {
 770                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 771                 return $this->makeMediaLinkObj( $nt, $text );
 772         }
 773
 774         /**
 775          * Create a direct link to a given uploaded file.
 776          *
 777          * @param $title Title object.
 778          * @param $text  String: pre-sanitized HTML
 779          * @return string HTML
 780          *
 781          * @public
 782          * @todo Handle invalid or missing images better.
 783          */
 784         function makeMediaLinkObj( $title, $text = '' ) {
 785                 if( is_null( $title ) ) {
 786                         ### HOTFIX. Instead of breaking, return empty string.
 787                         return $text;
 788                 } else {
 789                         $img  = wfFindFile( $title );
 790                         if( $img ) {
 791                                 $url  = $img->getURL();
 792                                 $class = 'internal';
 793                         } else {
 794                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 795                                 $url = $upload->getLocalUrl( 'wpDestFile=' . urlencode( $title->getDBkey() ) );
 796                                 $class = 'new';
 797                         }
 798                         $alt = htmlspecialchars( $title->getText() );
 799                         if( $text == '' ) {
 800                                 $text = $alt;
 801                         }
 802                         $u = htmlspecialchars( $url );
 803                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 804                 }
 805         }
 806
 807         /** @todo document */
 808         function specialLink( $name, $key = '' ) {
 809                 global $wgContLang;
 810
 811                 if ( '' == $key ) { $key = strtolower( $name ); }
 812                 $pn = $wgContLang->ucfirst( $name );
 813                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 814                   wfMsg( $key ) );
 815         }
 816
 817         /** @todo document */
 818         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $ns = null ) {
 819                 $style = $this->getExternalLinkAttributes( $url, $text, 'external ' . $linktype );
 820                 global $wgNoFollowLinks, $wgNoFollowNsExceptions;
 821                 if( $wgNoFollowLinks && !(isset($ns) && in_array($ns, $wgNoFollowNsExceptions)) ) {
 822                         $style .= ' rel="nofollow"';
 823                 }
 824                 $url = htmlspecialchars( $url );
 825                 if( $escape ) {
 826                         $text = htmlspecialchars( $text );
 827                 }
 828                 return '<a href="'.$url.'"'.$style.'>'.$text.'</a>';
 829         }
 830
 831         /**
 832          * Make user link (or user contributions for unregistered users)
 833          * @param $userId   Integer: user id in database.
 834          * @param $userText String: user name in database
 835          * @return string HTML fragment
 836          * @private
 837          */
 838         function userLink( $userId, $userText ) {
 839                 $encName = htmlspecialchars( $userText );
 840                 if( $userId == 0 ) {
 841                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 842                         return $this->makeKnownLinkObj( $contribsPage,
 843                                 $encName);
 844                 } else {
 845                         $userPage = Title::makeTitle( NS_USER, $userText );
 846                         return $this->makeLinkObj( $userPage, $encName );
 847                 }
 848         }
 849
 850         /**
 851          * Generate standard user tool links (talk, contributions, block link, etc.)
 852          *
 853          * @param int $userId User identifier
 854          * @param string $userText User name or IP address
 855          * @param bool $redContribsWhenNoEdits Should the contributions link be red if the user has no edits?
 856          * @param int $flags Customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 857          * @return string
 858          */
 859         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0 ) {
 860                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 861                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 862                 $blockable = ( $wgSysopUserBans || 0 == $userId ) && !$flags & self::TOOL_LINKS_NOBLOCK;
 863
 864                 $items = array();
 865                 if( $talkable ) {
 866                         $items[] = $this->userTalkLink( $userId, $userText );
 867                 }
 868                 if( $userId ) {
 869                         // check if the user has an edit
 870                         if( $redContribsWhenNoEdits && User::edits( $userId ) == 0 ) {
 871                                 $style = " class='new'";
 872                         } else {
 873                                 $style = '';
 874                         }
 875                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 876
 877                         $items[] = $this->makeKnownLinkObj( $contribsPage, wfMsgHtml( 'contribslink' ), '', '', '', '', $style );
 878                 }
 879                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 880                         $items[] = $this->blockLink( $userId, $userText );
 881                 }
 882
 883                 if( $items ) {
 884                         return ' (' . implode( ' | ', $items ) . ')';
 885                 } else {
 886                         return '';
 887                 }
 888         }
 889
 890         /**
 891          * Alias for userToolLinks( $userId, $userText, true );
 892          */
 893         public function userToolLinksRedContribs( $userId, $userText ) {
 894                 return $this->userToolLinks( $userId, $userText, true );
 895         }
 896
 897
 898         /**
 899          * @param $userId Integer: user id in database.
 900          * @param $userText String: user name in database.
 901          * @return string HTML fragment with user talk link
 902          * @private
 903          */
 904         function userTalkLink( $userId, $userText ) {
 905                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 906                 $userTalkLink = $this->makeLinkObj( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 907                 return $userTalkLink;
 908         }
 909
 910         /**
 911          * @param $userId Integer: userid
 912          * @param $userText String: user name in database.
 913          * @return string HTML fragment with block link
 914          * @private
 915          */
 916         function blockLink( $userId, $userText ) {
 917                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 918                 $blockLink = $this->makeKnownLinkObj( $blockPage,
 919                         wfMsgHtml( 'blocklink' ) );
 920                 return $blockLink;
 921         }
 922
 923         /**
 924          * Generate a user link if the current user is allowed to view it
 925          * @param $rev Revision object.
 926          * @param $isPublic, bool, show only if all users can see it
 927          * @return string HTML
 928          */
 929         function revUserLink( $rev, $isPublic = false ) {
 930                 if( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 931                         $link = wfMsgHtml( 'rev-deleted-user' );
 932                 } else if( $rev->userCan( Revision::DELETED_USER ) ) {
 933                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() );
 934                 } else {
 935                         $link = wfMsgHtml( 'rev-deleted-user' );
 936                 }
 937                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 938                         return '<span class="history-deleted">' . $link . '</span>';
 939                 }
 940                 return $link;
 941         }
 942
 943         /**
 944          * Generate a user tool link cluster if the current user is allowed to view it
 945          * @param $rev Revision object.
 946          * @param $isPublic, bool, show only if all users can see it
 947          * @return string HTML
 948          */
 949         function revUserTools( $rev, $isPublic = false ) {
 950                 if( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 951                         $link = wfMsgHtml( 'rev-deleted-user' );
 952                 } else if( $rev->userCan( Revision::DELETED_USER ) ) {
 953                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() ) .
 954                         ' ' . $this->userToolLinks( $rev->getRawUser(), $rev->getRawUserText() );
 955                 } else {
 956                         $link = wfMsgHtml( 'rev-deleted-user' );
 957                 }
 958                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 959                         return ' <span class="history-deleted">' . $link . '</span>';
 960                 }
 961                 return $link;
 962         }
 963
 964         /**
 965          * This function is called by all recent changes variants, by the page history,
 966          * and by the user contributions list. It is responsible for formatting edit
 967          * comments. It escapes any HTML in the comment, but adds some CSS to format
 968          * auto-generated comments (from section editing) and formats [[wikilinks]].
 969          *
 970          * @author Erik Moeller <moeller@scireview.de>
 971          *
 972          * Note: there's not always a title to pass to this function.
 973          * Since you can't set a default parameter for a reference, I've turned it
 974          * temporarily to a value pass. Should be adjusted further. --brion
 975          *
 976          * @param string $comment
 977          * @param mixed $title Title object (to generate link to the section in autocomment) or null
 978          * @param bool $local Whether section links should refer to local page
 979          */
 980         function formatComment($comment, $title = NULL, $local = false) {
 981                 wfProfileIn( __METHOD__ );
 982
 983                 # Sanitize text a bit:
 984                 $comment = str_replace( "\n", " ", $comment );
 985                 $comment = htmlspecialchars( $comment );
 986
 987                 # Render autocomments and make links:
 988                 $comment = $this->formatAutoComments( $comment, $title, $local );
 989                 $comment = $this->formatLinksInComment( $comment );
 990
 991                 wfProfileOut( __METHOD__ );
 992                 return $comment;
 993         }
 994
 995         /**
 996          * The pattern for autogen comments is / * foo * /, which makes for
 997          * some nasty regex.
 998          * We look for all comments, match any text before and after the comment,
 999          * add a separator where needed and format the comment itself with CSS
1000          * Called by Linker::formatComment.
1001          *
1002          * @param string $comment Comment text
1003          * @param object $title An optional title object used to links to sections
1004          * @return string $comment formatted comment
1005          *
1006          * @todo Document the $local parameter.
1007          */
1008         private function formatAutocomments( $comment, $title = NULL, $local = false ) {
1009                 $match = array();
1010                 while (preg_match('!(.*)/\*\s*(.*?)\s*\*/(.*)!', $comment,$match)) {
1011                         $pre=$match[1];
1012                         $auto=$match[2];
1013                         $post=$match[3];
1014                         $link='';
1015                         if( $title ) {
1016                                 $section = $auto;
1017
1018                                 # Generate a valid anchor name from the section title.
1019                                 # Hackish, but should generally work - we strip wiki
1020                                 # syntax, including the magic [[: that is used to
1021                                 # "link rather than show" in case of images and
1022                                 # interlanguage links.
1023                                 $section = str_replace( '[[:', '', $section );
1024                                 $section = str_replace( '[[', '', $section );
1025                                 $section = str_replace( ']]', '', $section );
1026                                 if ( $local ) {
1027                                         $sectionTitle = Title::newFromText( '#' . $section);
1028                                 } else {
1029                                         $sectionTitle = wfClone( $title );
1030                                         $sectionTitle->mFragment = $section;
1031                                 }
1032                                 $link = $this->makeKnownLinkObj( $sectionTitle, wfMsgForContent( 'sectionlink' ) );
1033                         }
1034                         $auto = $link . $auto;
1035                         if( $pre ) {
1036                                 # written summary $presep autocomment (summary /* section */)
1037                                 $auto = wfMsgExt( 'autocomment-prefix', array( 'escapenoentities', 'content' ) ) . $auto;
1038                         }
1039                         if( $post ) {
1040                                 # autocomment $postsep written summary (/* section */ summary)
1041                                 $auto .= wfMsgExt( 'colon-separator', array( 'escapenoentities', 'content' ) );
1042                         }
1043                         $auto = '<span class="autocomment">' . $auto . '</span>';
1044                         $comment = $pre . $auto . $post;
1045                 }
1046
1047                 return $comment;
1048         }
1049
1050         /**
1051          * Formats wiki links and media links in text; all other wiki formatting
1052          * is ignored
1053          *
1054          * @fixme doesn't handle sub-links as in image thumb texts like the main parser
1055          * @param string $comment Text to format links in
1056          * @return string
1057          */
1058         public function formatLinksInComment( $comment ) {
1059                 return preg_replace_callback(
1060                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1061                         array( $this, 'formatLinksInCommentCallback' ),
1062                         $comment );
1063         }
1064
1065         protected function formatLinksInCommentCallback( $match ) {
1066                 global $wgContLang;
1067
1068                 $medians = '(?:' . preg_quote( Namespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1069                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1070
1071                 $comment = $match[0];
1072
1073                 # Handle link renaming [[foo|text]] will show link as "text"
1074                 if( "" != $match[3] ) {
1075                         $text = $match[3];
1076                 } else {
1077                         $text = $match[1];
1078                 }
1079                 $submatch = array();
1080                 if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1081                         # Media link; trail not supported.
1082                         $linkRegexp = '/\[\[(.*?)\]\]/';
1083                         $thelink = $this->makeMediaLink( $submatch[1], "", $text );
1084                 } else {
1085                         # Other kind of link
1086                         if( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1087                                 $trail = $submatch[1];
1088                         } else {
1089                                 $trail = "";
1090                         }
1091                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1092                         if (isset($match[1][0]) && $match[1][0] == ':')
1093                                 $match[1] = substr($match[1], 1);
1094                         $thelink = $this->makeLink( $match[1], $text, "", $trail );
1095                 }
1096                 $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1097
1098                 return $comment;
1099         }
1100
1101         /**
1102          * Wrap a comment in standard punctuation and formatting if
1103          * it's non-empty, otherwise return empty string.
1104          *
1105          * @param string $comment
1106          * @param mixed $title Title object (to generate link to section in autocomment) or null
1107          * @param bool $local Whether section links should refer to local page
1108          *
1109          * @return string
1110          */
1111         function commentBlock( $comment, $title = NULL, $local = false ) {
1112                 // '*' used to be the comment inserted by the software way back
1113                 // in antiquity in case none was provided, here for backwards
1114                 // compatability, acc. to brion -ævar
1115                 if( $comment == '' || $comment == '*' ) {
1116                         return '';
1117                 } else {
1118                         $formatted = $this->formatComment( $comment, $title, $local );
1119                         return " <span class=\"comment\">($formatted)</span>";
1120                 }
1121         }
1122
1123         /**
1124          * Wrap and format the given revision's comment block, if the current
1125          * user is allowed to view it.
1126          *
1127          * @param Revision $rev
1128          * @param bool $local Whether section links should refer to local page
1129          * @param $isPublic, show only if all users can see it
1130          * @return string HTML
1131          */
1132         function revComment( Revision $rev, $local = false, $isPublic = false ) {
1133                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) && $isPublic ) {
1134                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1135                 } else if( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1136                         $block = $this->commentBlock( $rev->getRawComment(), $rev->getTitle(), $local );
1137                 } else {
1138                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1139                 }
1140                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1141                         return " <span class=\"history-deleted\">$block</span>";
1142                 }
1143                 return $block;
1144         }
1145
1146         /** @todo document */
1147         function tocIndent() {
1148                 return "\n<ul>";
1149         }
1150
1151         /** @todo document */
1152         function tocUnindent($level) {
1153                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
1154         }
1155
1156         /**
1157          * parameter level defines if we are on an indentation level
1158          */
1159         function tocLine( $anchor, $tocline, $tocnumber, $level ) {
1160                 return "\n<li class=\"toclevel-$level\"><a href=\"#" .
1161                         $anchor . '"><span class="tocnumber">' .
1162                         $tocnumber . '</span> <span class="toctext">' .
1163                         $tocline . '</span></a>';
1164         }
1165
1166         /** @todo document */
1167         function tocLineEnd() {
1168                 return "</li>\n";
1169         }
1170
1171         /** @todo document */
1172         function tocList($toc) {
1173                 global $wgJsMimeType;
1174                 $title = wfMsgHtml('toc') ;
1175                 return
1176                    '<table id="toc" class="toc" summary="' . $title .'"><tr><td>'
1177                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1178                  . $toc
1179                  # no trailing newline, script should not be wrapped in a
1180                  # paragraph
1181                  . "</ul>\n</td></tr></table>"
1182                  . '<script type="' . $wgJsMimeType . '">'
1183                  . ' if (window.showTocToggle) {'
1184                  . ' var tocShowText = "' . wfEscapeJsString( wfMsg('showtoc') ) . '";'
1185                  . ' var tocHideText = "' . wfEscapeJsString( wfMsg('hidetoc') ) . '";'
1186                  . ' showTocToggle();'
1187                  . ' } '
1188                  . "</script>\n";
1189         }
1190
1191         /**
1192          * Used to generate section edit links that point to "other" pages
1193          * (sections that are really part of included pages).
1194          *
1195          * @param $title Title string.
1196          * @param $section Integer: section number.
1197          */
1198         public function editSectionLinkForOther( $title, $section ) {
1199                 $title = Title::newFromText( $title );
1200                 return $this->doEditSectionLink( $title, $section, '', 'EditSectionLinkForOther' );
1201         }
1202
1203         /**
1204          * @param $nt Title object.
1205          * @param $section Integer: section number.
1206          * @param $hint Link String: title, or default if omitted or empty
1207          */
1208         public function editSectionLink( Title $nt, $section, $hint='' ) {
1209                 if( $hint != '' ) {
1210                         $hint = wfMsgHtml( 'editsectionhint', htmlspecialchars( $hint ) );
1211                         $hint = " title=\"$hint\"";
1212                 }
1213                 return $this->doEditSectionLink( $nt, $section, $hint, 'EditSectionLink' );
1214         }
1215
1216         /**
1217          * Implement editSectionLink and editSectionLinkForOther.
1218          *
1219          * @param $nt      Title object
1220          * @param $section Integer, section number
1221          * @param $hint    String, for HTML title attribute
1222          * @param $hook    String, name of hook to run
1223          * @return         String, HTML to use for edit link
1224          */
1225         protected function doEditSectionLink( Title $nt, $section, $hint, $hook ) {
1226                 global $wgContLang;
1227                 $editurl = '&section='.$section;
1228                 $url = $this->makeKnownLinkObj(
1229                         $nt,
1230                         wfMsg('editsection'),
1231                         'action=edit'.$editurl,
1232                         '', '', '',  $hint
1233                 );
1234                 $result = null;
1235
1236                 // The two hooks have slightly different interfaces . . .
1237                 if( $hook == 'EditSectionLink' ) {
1238                         wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $hint, $url, &$result ) );
1239                 } elseif( $hook == 'EditSectionLinkForOther' ) {
1240                         wfRunHooks( 'EditSectionLinkForOther', array( &$this, $nt, $section, $url, &$result ) );
1241                 }
1242
1243                 // For reverse compatibility, add the brackets *after* the hook is run,
1244                 // and even add them to hook-provided text.
1245                 if( is_null( $result ) ) {
1246                         $result = wfMsg( 'editsection-brackets', $url );
1247                 } else {
1248                         $result = wfMsg( 'editsection-brackets', $result );
1249                 }
1250                 return "<span class=\"editsection\">$result</span>";
1251         }
1252
1253         /**
1254          * Create a headline for content
1255          *
1256          * @param int    $level   The level of the headline (1-6)
1257          * @param string $attribs Any attributes for the headline, starting with a space and ending with '>'
1258          *                        This *must* be at least '>' for no attribs
1259          * @param string $anchor  The anchor to give the headline (the bit after the #)
1260          * @param string $text    The text of the header
1261          * @param string $link    HTML to add for the section edit link
1262          *
1263          * @return string HTML headline
1264          */
1265         public function makeHeadline( $level, $attribs, $anchor, $text, $link ) {
1266                 return "<a name=\"$anchor\"></a><h$level$attribs$link <span class=\"mw-headline\">$text</span></h$level>";
1267         }
1268
1269         /**
1270          * Split a link trail, return the "inside" portion and the remainder of the trail
1271          * as a two-element array
1272          *
1273          * @static
1274          */
1275         static function splitTrail( $trail ) {
1276                 static $regex = false;
1277                 if ( $regex === false ) {
1278                         global $wgContLang;
1279                         $regex = $wgContLang->linkTrail();
1280                 }
1281                 $inside = '';
1282                 if ( '' != $trail ) {
1283                         $m = array();
1284                         if ( preg_match( $regex, $trail, $m ) ) {
1285                                 $inside = $m[1];
1286                                 $trail = $m[2];
1287                         }
1288                 }
1289                 return array( $inside, $trail );
1290         }
1291
1292         /**
1293          * Generate a rollback link for a given revision.  Currently it's the
1294          * caller's responsibility to ensure that the revision is the top one. If
1295          * it's not, of course, the user will get an error message.
1296          *
1297          * If the calling page is called with the parameter &bot=1, all rollback
1298          * links also get that parameter. It causes the edit itself and the rollback
1299          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1300          * changes, so this allows sysops to combat a busy vandal without bothering
1301          * other users.
1302          *
1303          * @param Revision $rev
1304          */
1305         function generateRollback( $rev ) {
1306                 return '<span class="mw-rollback-link">['
1307                         . $this->buildRollbackLink( $rev )
1308                         . ']</span>';
1309         }
1310
1311         /**
1312          * Build a raw rollback link, useful for collections of "tool" links
1313          *
1314          * @param Revision $rev
1315          * @return string
1316          */
1317         public function buildRollbackLink( $rev ) {
1318                 global $wgRequest, $wgUser;
1319                 $title = $rev->getTitle();
1320                 $extra  = $wgRequest->getBool( 'bot' ) ? '&bot=1' : '';
1321                 $extra .= '&token=' . urlencode( $wgUser->editToken( array( $title->getPrefixedText(),
1322                         $rev->getUserText() ) ) );
1323                 return $this->makeKnownLinkObj(
1324                         $title,
1325                         wfMsgHtml( 'rollbacklink' ),
1326                         'action=rollback&from=' . urlencode( $rev->getUserText() ) . $extra
1327                 );
1328         }
1329
1330         /**
1331          * Returns HTML for the "templates used on this page" list.
1332          *
1333          * @param array $templates Array of templates from Article::getUsedTemplate
1334          * or similar
1335          * @param bool $preview Whether this is for a preview
1336          * @param bool $section Whether this is for a section edit
1337          * @return string HTML output
1338          */
1339         public function formatTemplates( $templates, $preview = false, $section = false) {
1340                 global $wgUser;
1341                 wfProfileIn( __METHOD__ );
1342
1343                 $sk = $wgUser->getSkin();
1344
1345                 $outText = '';
1346                 if ( count( $templates ) > 0 ) {
1347                         # Do a batch existence check
1348                         $batch = new LinkBatch;
1349                         foreach( $templates as $title ) {
1350                                 $batch->addObj( $title );
1351                         }
1352                         $batch->execute();
1353
1354                         # Construct the HTML
1355                         $outText = '<div class="mw-templatesUsedExplanation">';
1356                         if ( $preview ) {
1357                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ) );
1358                         } elseif ( $section ) {
1359                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ) );
1360                         } else {
1361                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ) );
1362                         }
1363                         $outText .= '</div><ul>';
1364
1365                         foreach ( $templates as $titleObj ) {
1366                                 $r = $titleObj->getRestrictions( 'edit' );
1367                                 if ( in_array( 'sysop', $r ) ) {
1368                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1369                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1370                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1371                                 } else {
1372                                         $protected = '';
1373                                 }
1374                                 $outText .= '<li>' . $sk->makeLinkObj( $titleObj ) . ' ' . $protected . '</li>';
1375                         }
1376                         $outText .= '</ul>';
1377                 }
1378                 wfProfileOut( __METHOD__  );
1379                 return $outText;
1380         }
1381
1382         /**
1383          * Returns HTML for the "hidden categories on this page" list.
1384          *
1385          * @param array $hiddencats Array of hidden categories from Article::getHiddenCategories
1386          * or similar
1387          * @return string HTML output
1388          */
1389         public function formatHiddenCategories( $hiddencats) {
1390                 global $wgUser, $wgLang;
1391                 wfProfileIn( __METHOD__ );
1392
1393                 $sk = $wgUser->getSkin();
1394
1395                 $outText = '';
1396                 if ( count( $hiddencats ) > 0 ) {
1397                         # Construct the HTML
1398                         $outText = '<div class="mw-hiddenCategoriesExplanation">';
1399                         $outText .= wfMsgExt( 'hiddencategories', array( 'parse' ), $wgLang->formatnum( count( $hiddencats ) ) );
1400                         $outText .= '</div><ul>';
1401
1402                         foreach ( $hiddencats as $titleObj ) {
1403                                 $outText .= '<li>' . $sk->makeKnownLinkObj( $titleObj ) . '</li>'; # If it's hidden, it must exist - no need to check with a LinkBatch
1404                         }
1405                         $outText .= '</ul>';
1406                 }
1407                 wfProfileOut( __METHOD__  );
1408                 return $outText;
1409         }
1410
1411         /**
1412          * Format a size in bytes for output, using an appropriate
1413          * unit (B, KB, MB or GB) according to the magnitude in question
1414          *
1415          * @param $size Size to format
1416          * @return string
1417          */
1418         public function formatSize( $size ) {
1419                 global $wgLang;
1420                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1421         }
1422
1423         /**
1424          * Given the id of an interface element, constructs the appropriate title
1425          * and accesskey attributes from the system messages.  (Note, this is usu-
1426          * ally the id but isn't always, because sometimes the accesskey needs to
1427          * go on a different element than the id, for reverse-compatibility, etc.)
1428          *
1429          * @param string $name Id of the element, minus prefixes.
1430          * @return string title and accesskey attributes, ready to drop in an
1431          *   element (e.g., ' title="This does something [x]" accesskey="x"').
1432          */
1433         public function tooltipAndAccesskey($name) {
1434                 $fname="Linker::tooltipAndAccesskey";
1435                 wfProfileIn($fname);
1436                 $out = '';
1437
1438                 $tooltip = wfMsg('tooltip-'.$name);
1439                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1440                         // Compatibility: formerly some tooltips had [alt-.] hardcoded
1441                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1442                         $out .= ' title="'.htmlspecialchars($tooltip);
1443                 }
1444                 $accesskey = wfMsg('accesskey-'.$name);
1445                 if ($accesskey && $accesskey != '-' && !wfEmptyMsg('accesskey-'.$name, $accesskey)) {
1446                         if ($out) $out .= " [$accesskey]\" accesskey=\"$accesskey\"";
1447                         else $out .= " title=\"[$accesskey]\" accesskey=\"$accesskey\"";
1448                 } elseif ($out) {
1449                         $out .= '"';
1450                 }
1451                 wfProfileOut($fname);
1452                 return $out;
1453         }
1454
1455         /**
1456          * Given the id of an interface element, constructs the appropriate title
1457          * attribute from the system messages.  (Note, this is usually the id but
1458          * isn't always, because sometimes the accesskey needs to go on a different
1459          * element than the id, for reverse-compatibility, etc.)
1460          *
1461          * @param string $name Id of the element, minus prefixes.
1462          * @return string title attribute, ready to drop in an element
1463          * (e.g., ' title="This does something"').
1464          */
1465         public function tooltip($name) {
1466                 $out = '';
1467
1468                 $tooltip = wfMsg('tooltip-'.$name);
1469                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1470                         $out = ' title="'.htmlspecialchars($tooltip).'"';
1471                 }
1472
1473                 return $out;
1474         }
1475 }