includes/Linker.php

   1 <?php
   2 /**
   3  * Split off some of the internal bits from Skin.php. These functions are used
   4  * for primarily page content: links, embedded images, table of contents. Links
   5  * are also used in the skin. For the moment, Skin is a descendent class of
   6  * Linker.  In the future, it should probably be further split so that every
   7  * other bit of the wiki doesn't have to go loading up Skin to get at it.
   8  *
   9  * @ingroup Skins
  10  */
  11 class Linker {
  12
  13         /**
  14          * Flags for userToolLinks()
  15          */
  16         const TOOL_LINKS_NOBLOCK = 1;
  17
  18         function __construct() {}
  19
  20         /**
  21          * Get the appropriate HTML attributes to add to the "a" element of an ex-
  22          * ternal link, as created by [wikisyntax].
  23          *
  24          * @param $class String: the contents of the class attribute; if an empty
  25          *   string is passed, which is the default value, defaults to 'external'.
  26          * @deprecated Just pass the external class directly to something using Html::expandAttributes
  27          */
  28         function getExternalLinkAttributes( $class = 'external' ) {
  29                 wfDeprecated( __METHOD__ );
  30                 return $this->getLinkAttributesInternal( '', $class );
  31         }
  32
  33         /**
  34          * Get the appropriate HTML attributes to add to the "a" element of an in-
  35          * terwiki link.
  36          *
  37          * @param $title String: the title text for the link, URL-encoded (???) but
  38          *   not HTML-escaped
  39          * @param $unused String: unused
  40          * @param $class String: the contents of the class attribute; if an empty
  41          *   string is passed, which is the default value, defaults to 'external'.
  42          */
  43         function getInterwikiLinkAttributes( $title, $unused = null, $class = 'external' ) {
  44                 global $wgContLang;
  45
  46                 # FIXME: We have a whole bunch of handling here that doesn't happen in
  47                 # getExternalLinkAttributes, why?
  48                 $title = urldecode( $title );
  49                 $title = $wgContLang->checkTitleEncoding( $title );
  50                 $title = preg_replace( '/[\\x00-\\x1f]/', ' ', $title );
  51
  52                 return $this->getLinkAttributesInternal( $title, $class );
  53         }
  54
  55         /**
  56          * Get the appropriate HTML attributes to add to the "a" element of an in-
  57          * ternal link.
  58          *
  59          * @param $title String: the title text for the link, URL-encoded (???) but
  60          *   not HTML-escaped
  61          * @param $unused String: unused
  62          * @param $class String: the contents of the class attribute, default none
  63          */
  64         function getInternalLinkAttributes( $title, $unused = null, $class = '' ) {
  65                 $title = urldecode( $title );
  66                 $title = str_replace( '_', ' ', $title );
  67                 return $this->getLinkAttributesInternal( $title, $class );
  68         }
  69
  70         /**
  71          * Get the appropriate HTML attributes to add to the "a" element of an in-
  72          * ternal link, given the Title object for the page we want to link to.
  73          *
  74          * @param $nt Title
  75          * @param $unused String: unused
  76          * @param $class String: the contents of the class attribute, default none
  77          * @param $title Mixed: optional (unescaped) string to use in the title
  78          *   attribute; if false, default to the name of the page we're linking to
  79          */
  80         function getInternalLinkAttributesObj( $nt, $unused = null, $class = '', $title = false ) {
  81                 if ( $title === false ) {
  82                         $title = $nt->getPrefixedText();
  83                 }
  84                 return $this->getLinkAttributesInternal( $title, $class );
  85         }
  86
  87         /**
  88          * Common code for getLinkAttributesX functions
  89          */
  90         private function getLinkAttributesInternal( $title, $class ) {
  91                 $title = htmlspecialchars( $title );
  92                 $class = htmlspecialchars( $class );
  93                 $r = '';
  94                 if ( $class != '' ) {
  95                         $r .= " class=\"$class\"";
  96                 }
  97                 if ( $title != '' ) {
  98                         $r .= " title=\"$title\"";
  99                 }
 100                 return $r;
 101         }
 102
 103         /**
 104          * Return the CSS colour of a known link
 105          *
 106          * @param $t Title object
 107          * @param $threshold Integer: user defined threshold
 108          * @return String: CSS class
 109          */
 110         function getLinkColour( $t, $threshold ) {
 111                 $colour = '';
 112                 if ( $t->isRedirect() ) {
 113                         # Page is a redirect
 114                         $colour = 'mw-redirect';
 115                 } elseif ( $threshold > 0 &&
 116                            $t->exists() && $t->getLength() < $threshold &&
 117                            $t->isContentPage() ) {
 118                         # Page is a stub
 119                         $colour = 'stub';
 120                 }
 121                 return $colour;
 122         }
 123
 124         /**
 125          * This function returns an HTML link to the given target.  It serves a few
 126          * purposes:
 127          *   1) If $target is a Title, the correct URL to link to will be figured
 128          *      out automatically.
 129          *   2) It automatically adds the usual classes for various types of link
 130          *      targets: "new" for red links, "stub" for short articles, etc.
 131          *   3) It escapes all attribute values safely so there's no risk of XSS.
 132          *   4) It provides a default tooltip if the target is a Title (the page
 133          *      name of the target).
 134          * link() replaces the old functions in the makeLink() family.
 135          *
 136          * @param $target        Title  Can currently only be a Title, but this may
 137          *   change to support Images, literal URLs, etc.
 138          * @param $text          string The HTML contents of the <a> element, i.e.,
 139          *   the link text.  This is raw HTML and will not be escaped.  If null,
 140          *   defaults to the prefixed text of the Title; or if the Title is just a
 141          *   fragment, the contents of the fragment.
 142          * @param $customAttribs array  A key => value array of extra HTML attri-
 143          *   butes, such as title and class.  (href is ignored.)  Classes will be
 144          *   merged with the default classes, while other attributes will replace
 145          *   default attributes.  All passed attribute values will be HTML-escaped.
 146          *   A false attribute value means to suppress that attribute.
 147          * @param $query         array  The query string to append to the URL
 148          *   you're linking to, in key => value array form.  Query keys and values
 149          *   will be URL-encoded.
 150          * @param $options       mixed  String or array of strings:
 151          *     'known': Page is known to exist, so don't check if it does.
 152          *     'broken': Page is known not to exist, so don't check if it does.
 153          *     'noclasses': Don't add any classes automatically (includes "new",
 154          *       "stub", "mw-redirect", "extiw").  Only use the class attribute
 155          *       provided, if any, so you get a simple blue link with no funny i-
 156          *       cons.
 157          *     'forcearticlepath': Use the article path always, even with a querystring.
 158          *       Has compatibility issues on some setups, so avoid wherever possible.
 159          * @return string HTML <a> attribute
 160          */
 161         public function link(
 162                 $target, $text = null, $customAttribs = array(), $query = array(), $options = array()
 163         ) {
 164                 wfProfileIn( __METHOD__ );
 165                 if ( !$target instanceof Title ) {
 166                         wfProfileOut( __METHOD__ );
 167                         return "<!-- ERROR -->$text";
 168                 }
 169                 $options = (array)$options;
 170
 171                 $ret = null;
 172                 if ( !wfRunHooks( 'LinkBegin', array( $this, $target, &$text,
 173                 &$customAttribs, &$query, &$options, &$ret ) ) ) {
 174                         wfProfileOut( __METHOD__ );
 175                         return $ret;
 176                 }
 177
 178                 # Normalize the Title if it's a special page
 179                 $target = $this->normaliseSpecialPage( $target );
 180
 181                 # If we don't know whether the page exists, let's find out.
 182                 wfProfileIn( __METHOD__ . '-checkPageExistence' );
 183                 if ( !in_array( 'known', $options ) and !in_array( 'broken', $options ) ) {
 184                         if ( $target->isKnown() ) {
 185                                 $options[] = 'known';
 186                         } else {
 187                                 $options[] = 'broken';
 188                         }
 189                 }
 190                 wfProfileOut( __METHOD__ . '-checkPageExistence' );
 191
 192                 $oldquery = array();
 193                 if ( in_array( "forcearticlepath", $options ) && $query ) {
 194                         $oldquery = $query;
 195                         $query = array();
 196                 }
 197
 198                 # Note: we want the href attribute first, for prettiness.
 199                 $attribs = array( 'href' => $this->linkUrl( $target, $query, $options ) );
 200                 if ( in_array( 'forcearticlepath', $options ) && $oldquery ) {
 201                         $attribs['href'] = wfAppendQuery( $attribs['href'], wfArrayToCgi( $oldquery ) );
 202                 }
 203
 204                 $attribs = array_merge(
 205                         $attribs,
 206                         $this->linkAttribs( $target, $customAttribs, $options, $text )
 207                 );
 208                 if ( is_null( $text ) ) {
 209                         $text = $this->linkText( $target );
 210                 }
 211
 212                 $ret = null;
 213                 if ( wfRunHooks( 'LinkEnd', array( $this, $target, $options, &$text, &$attribs, &$ret ) ) ) {
 214                         $ret = Html::rawElement( 'a', $attribs, $text );
 215                 }
 216
 217                 wfProfileOut( __METHOD__ );
 218                 return $ret;
 219         }
 220
 221         /**
 222          * Identical to link(), except $options defaults to 'known'.
 223          */
 224         public function linkKnown(
 225                 $target, $text = null, $customAttribs = array(),
 226                 $query = array(), $options = array( 'known', 'noclasses' ) )
 227         {
 228                 return $this->link( $target, $text, $customAttribs, $query, $options );
 229         }
 230
 231         /**
 232          * Returns the Url used to link to a Title
 233          *
 234          * @param $target Title
 235          */
 236         private function linkUrl( $target, $query, $options ) {
 237                 wfProfileIn( __METHOD__ );
 238                 # We don't want to include fragments for broken links, because they
 239                 # generally make no sense.
 240                 if ( in_array( 'broken', $options ) && $target->mFragment !== '' ) {
 241                         $target = clone $target;
 242                         $target->mFragment = '';
 243                 }
 244
 245                 # If it's a broken link, add the appropriate query pieces, unless
 246                 # there's already an action specified, or unless 'edit' makes no sense
 247                 # (i.e., for a nonexistent special page).
 248                 if ( in_array( 'broken', $options ) && empty( $query['action'] )
 249                         && $target->getNamespace() != NS_SPECIAL ) {
 250                         $query['action'] = 'edit';
 251                         $query['redlink'] = '1';
 252                 }
 253                 $ret = $target->getLinkUrl( $query );
 254                 wfProfileOut( __METHOD__ );
 255                 return $ret;
 256         }
 257
 258         /**
 259          * Returns the array of attributes used when linking to the Title $target
 260          *
 261          * @param $target Title
 262          */
 263         private function linkAttribs( $target, $attribs, $options, $linkText ) {
 264                 wfProfileIn( __METHOD__ );
 265                 global $wgUser;
 266                 $defaults = array();
 267
 268                 if ( !in_array( 'noclasses', $options ) ) {
 269                         wfProfileIn( __METHOD__ . '-getClasses' );
 270                         # Now build the classes.
 271                         $classes = array();
 272
 273                         if ( in_array( 'broken', $options ) ) {
 274                                 $classes[] = 'new';
 275                         }
 276
 277                         if ( $target->isExternal() ) {
 278                                 $classes[] = 'extiw';
 279                         }
 280
 281                         if ( !in_array( 'broken', $options ) ) { # Avoid useless calls to LinkCache (see r50387)
 282                                 $colour = $this->getLinkColour( $target, $wgUser->getStubThreshold() );
 283                                 if ( $colour !== '' ) {
 284                                         $classes[] = $colour; # mw-redirect or stub
 285                                 }
 286                         }
 287                         if ( $classes != array() ) {
 288                                 $defaults['class'] = implode( ' ', $classes );
 289                         }
 290                         wfProfileOut( __METHOD__ . '-getClasses' );
 291                 }
 292
 293                 # Get a default title attribute.
 294                 global $wgLang;
 295                 $known = in_array( 'known', $options );
 296                 if ( $target->getPrefixedText() == '' ) {
 297                         # A link like [[#Foo]].  This used to mean an empty title
 298                         # attribute, but that's silly.  Just don't output a title.
 299                 } elseif ( $known &&
 300                         $wgLang->caseFold($linkText) !== $wgLang->caseFold($target->getPrefixedText() ) )
 301                 {
 302                         $defaults['title'] = $target->getPrefixedText();
 303                 } elseif ( !$known ) {
 304                         $defaults['title'] = wfMsg( 'red-link-title', $target->getPrefixedText() );
 305                 }
 306
 307                 # Finally, merge the custom attribs with the default ones, and iterate
 308                 # over that, deleting all "false" attributes.
 309                 $ret = array();
 310                 $merged = Sanitizer::mergeAttributes( $defaults, $attribs );
 311                 foreach ( $merged as $key => $val ) {
 312                         # A false value suppresses the attribute, and we don't want the
 313                         # href attribute to be overridden.
 314                         if ( $key != 'href' and $val !== false ) {
 315                                 $ret[$key] = $val;
 316                         }
 317                 }
 318                 wfProfileOut( __METHOD__ );
 319                 return $ret;
 320         }
 321
 322         /**
 323          * Default text of the links to the Title $target
 324          *
 325          * @param $target Title
 326          */
 327         private function linkText( $target ) {
 328                 # We might be passed a non-Title by make*LinkObj().  Fail gracefully.
 329                 if ( !$target instanceof Title ) {
 330                         return '';
 331                 }
 332
 333                 # If the target is just a fragment, with no title, we return the frag-
 334                 # ment text.  Otherwise, we return the title text itself.
 335                 if ( $target->getPrefixedText() === '' && $target->getFragment() !== '' ) {
 336                         return htmlspecialchars( $target->getFragment() );
 337                 }
 338                 return htmlspecialchars( $target->getPrefixedText() );
 339         }
 340
 341         /**
 342          * Generate either a normal exists-style link or a stub link, depending
 343          * on the given page size.
 344          *
 345          * @param $size Integer
 346          * @param $nt Title object.
 347          * @param $text String
 348          * @param $query String
 349          * @param $trail String
 350          * @param $prefix String
 351          * @return string HTML of link
 352          * @deprecated since 1.17
 353          */
 354         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 355                 global $wgUser;
 356                 wfDeprecated( __METHOD__ );
 357
 358                 $threshold = $wgUser->getStubThreshold();
 359                 $colour = ( $size < $threshold ) ? 'stub' : '';
 360                 // FIXME: replace deprecated makeColouredLinkObj by link()
 361                 return $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 362         }
 363
 364         /**
 365          * Make appropriate markup for a link to the current article. This is currently rendered
 366          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 367          * despite $query not being used.
 368          *
 369          * @param $nt Title
 370          */
 371         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 372                 if ( $text == '' ) {
 373                         $text = htmlspecialchars( $nt->getPrefixedText() );
 374                 }
 375                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 376                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 377         }
 378
 379         function normaliseSpecialPage( Title $title ) {
 380                 if ( $title->getNamespace() == NS_SPECIAL ) {
 381                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $title->getDBkey() );
 382                         if ( !$name ) {
 383                                 return $title;
 384                         }
 385                         $ret = SpecialPage::getTitleFor( $name, $subpage );
 386                         $ret->mFragment = $title->getFragment();
 387                         return $ret;
 388                 } else {
 389                         return $title;
 390                 }
 391         }
 392
 393         /**
 394          * Returns the filename part of an url.
 395          * Used as alternative text for external images.
 396          */
 397         function fnamePart( $url ) {
 398                 $basename = strrchr( $url, '/' );
 399                 if ( false === $basename ) {
 400                         $basename = $url;
 401                 } else {
 402                         $basename = substr( $basename, 1 );
 403                 }
 404                 return $basename;
 405         }
 406
 407         /**
 408          * Return the code for images which were added via external links,
 409          * via Parser::maybeMakeExternalImage().
 410          */
 411         function makeExternalImage( $url, $alt = '' ) {
 412                 if ( $alt == '' ) {
 413                         $alt = $this->fnamePart( $url );
 414                 }
 415                 $img = '';
 416                 $success = wfRunHooks( 'LinkerMakeExternalImage', array( &$url, &$alt, &$img ) );
 417                 if ( !$success ) {
 418                         wfDebug( "Hook LinkerMakeExternalImage changed the output of external image with url {$url} and alt text {$alt} to {$img}\n", true );
 419                         return $img;
 420                 }
 421                 return Html::element( 'img',
 422                         array(
 423                                 'src' => $url,
 424                                 'alt' => $alt ) );
 425         }
 426
 427         /**
 428          * Given parameters derived from [[Image:Foo|options...]], generate the
 429          * HTML that that syntax inserts in the page.
 430          *
 431          * @param $title Title object
 432          * @param $file File object, or false if it doesn't exist
 433          * @param $frameParams Array: associative array of parameters external to the media handler.
 434          *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
 435          *     will often be false.
 436          *          thumbnail       If present, downscale and frame
 437          *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
 438          *          framed          Shows image in original size in a frame
 439          *          frameless       Downscale but don't frame
 440          *          upright         If present, tweak default sizes for portrait orientation
 441          *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
 442          *          border          If present, show a border around the image
 443          *          align           Horizontal alignment (left, right, center, none)
 444          *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
 445          *                          bottom, text-bottom)
 446          *          alt             Alternate text for image (i.e. alt attribute). Plain text.
 447          *          caption         HTML for image caption.
 448          *          link-url        URL to link to
 449          *          link-title      Title object to link to
 450          *          link-target     Value for the target attribue, only with link-url
 451          *          no-link         Boolean, suppress description link
 452          *
 453          * @param $handlerParams Array: associative array of media handler parameters, to be passed
 454          *       to transform(). Typical keys are "width" and "page".
 455          * @param $time String: timestamp of the file, set as false for current
 456          * @param $query String: query params for desc url
 457          * @param $widthOption: Used by the parser to remember the user preference thumbnailsize
 458          * @return String: HTML for an image, with links, wrappers, etc.
 459          */
 460         function makeImageLink2( Title $title, $file, $frameParams = array(),
 461                 $handlerParams = array(), $time = false, $query = "", $widthOption = null )
 462         {
 463                 $res = null;
 464                 if ( !wfRunHooks( 'ImageBeforeProduceHTML', array( &$this, &$title,
 465                         &$file, &$frameParams, &$handlerParams, &$time, &$res ) ) ) {
 466                         return $res;
 467                 }
 468
 469                 if ( $file && !$file->allowInlineDisplay() ) {
 470                         wfDebug( __METHOD__ . ': ' . $title->getPrefixedDBkey() . " does not allow inline display\n" );
 471                         return $this->link( $title );
 472                 }
 473
 474                 // Shortcuts
 475                 $fp =& $frameParams;
 476                 $hp =& $handlerParams;
 477
 478                 // Clean up parameters
 479                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 480                 if ( !isset( $fp['align'] ) ) {
 481                         $fp['align'] = '';
 482                 }
 483                 if ( !isset( $fp['alt'] ) ) {
 484                         $fp['alt'] = '';
 485                 }
 486                 if ( !isset( $fp['title'] ) ) {
 487                         $fp['title'] = '';
 488                 }
 489
 490                 $prefix = $postfix = '';
 491
 492                 if ( 'center' == $fp['align'] ) {
 493                         $prefix  = '<div class="center">';
 494                         $postfix = '</div>';
 495                         $fp['align']   = 'none';
 496                 }
 497                 if ( $file && !isset( $hp['width'] ) ) {
 498                         $hp['width'] = $file->getWidth( $page );
 499
 500                         if ( isset( $fp['thumbnail'] ) || isset( $fp['framed'] ) || isset( $fp['frameless'] ) || !$hp['width'] ) {
 501                                 global $wgThumbLimits, $wgThumbUpright;
 502                                 if ( !isset( $widthOption ) || !isset( $wgThumbLimits[$widthOption] ) ) {
 503                                         $widthOption = User::getDefaultOption( 'thumbsize' );
 504                                 }
 505
 506                                 // Reduce width for upright images when parameter 'upright' is used
 507                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 508                                         $fp['upright'] = $wgThumbUpright;
 509                                 }
 510                                 // 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
 511                                 $prefWidth = isset( $fp['upright'] ) ?
 512                                         round( $wgThumbLimits[$widthOption] * $fp['upright'], -1 ) :
 513                                         $wgThumbLimits[$widthOption];
 514
 515                                 // Use width which is smaller: real image width or user preference width
 516                                 // Unless image is scalable vector.
 517                                 if ( !isset( $hp['height'] ) && ( $hp['width'] <= 0 ||
 518                                                 $prefWidth < $hp['width'] || $file->isVectorized() ) ) {
 519                                         $hp['width'] = $prefWidth;
 520                                 }
 521                         }
 522                 }
 523
 524                 if ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) {
 525                         global $wgContLang;
 526                         # Create a thumbnail. Alignment depends on language
 527                         # writing direction, # right aligned for left-to-right-
 528                         # languages ("Western languages"), left-aligned
 529                         # for right-to-left-languages ("Semitic languages")
 530                         #
 531                         # If  thumbnail width has not been provided, it is set
 532                         # to the default user option as specified in Language*.php
 533                         if ( $fp['align'] == '' ) {
 534                                 $fp['align'] = $wgContLang->alignEnd();
 535                         }
 536                         return $prefix . $this->makeThumbLink2( $title, $file, $fp, $hp, $time, $query ) . $postfix;
 537                 }
 538
 539                 if ( $file && isset( $fp['frameless'] ) ) {
 540                         $srcWidth = $file->getWidth( $page );
 541                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 542                         # This is the same behaviour as the "thumb" option does it already.
 543                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 544                                 $hp['width'] = $srcWidth;
 545                         }
 546                 }
 547
 548                 if ( $file && isset( $hp['width'] ) ) {
 549                         # Create a resized image, without the additional thumbnail features
 550                         $thumb = $file->transform( $hp );
 551                 } else {
 552                         $thumb = false;
 553                 }
 554
 555                 if ( !$thumb ) {
 556                         $s = $this->makeBrokenImageLinkObj( $title, $fp['title'], '', '', '', $time == true );
 557                 } else {
 558                         $params = array(
 559                                 'alt' => $fp['alt'],
 560                                 'title' => $fp['title'],
 561                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 562                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false );
 563                         $params = $this->getImageLinkMTOParams( $fp, $query ) + $params;
 564
 565                         $s = $thumb->toHtml( $params );
 566                 }
 567                 if ( $fp['align'] != '' ) {
 568                         $s = "<div class=\"float{$fp['align']}\">{$s}</div>";
 569                 }
 570                 return str_replace( "\n", ' ', $prefix . $s . $postfix );
 571         }
 572
 573         /**
 574          * Get the link parameters for MediaTransformOutput::toHtml() from given
 575          * frame parameters supplied by the Parser.
 576          * @param $frameParams The frame parameters
 577          * @param $query An optional query string to add to description page links
 578          */
 579         function getImageLinkMTOParams( $frameParams, $query = '' ) {
 580                 $mtoParams = array();
 581                 if ( isset( $frameParams['link-url'] ) && $frameParams['link-url'] !== '' ) {
 582                         $mtoParams['custom-url-link'] = $frameParams['link-url'];
 583                         if ( isset( $frameParams['link-target'] ) ) {
 584                                 $mtoParams['custom-target-link'] = $frameParams['link-target'];
 585                         }
 586                 } elseif ( isset( $frameParams['link-title'] ) && $frameParams['link-title'] !== '' ) {
 587                         $mtoParams['custom-title-link'] = $this->normaliseSpecialPage( $frameParams['link-title'] );
 588                 } elseif ( !empty( $frameParams['no-link'] ) ) {
 589                         // No link
 590                 } else {
 591                         $mtoParams['desc-link'] = true;
 592                         $mtoParams['desc-query'] = $query;
 593                 }
 594                 return $mtoParams;
 595         }
 596
 597         /**
 598          * Make HTML for a thumbnail including image, border and caption
 599          * @param $title Title object
 600          * @param $file File object or false if it doesn't exist
 601          * @param $label String
 602          * @param $alt String
 603          * @param $align String
 604          * @param $params Array
 605          * @param $framed Boolean
 606          * @param $manualthumb String
 607          */
 608         function makeThumbLinkObj( Title $title, $file, $label = '', $alt,
 609                 $align = 'right', $params = array(), $framed = false , $manualthumb = "" )
 610         {
 611                 $frameParams = array(
 612                         'alt' => $alt,
 613                         'caption' => $label,
 614                         'align' => $align
 615                 );
 616                 if ( $framed ) {
 617                         $frameParams['framed'] = true;
 618                 }
 619                 if ( $manualthumb ) {
 620                         $frameParams['manualthumb'] = $manualthumb;
 621                 }
 622                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 623         }
 624
 625         /**
 626          * @param $title Title
 627          * @param  $file File
 628          * @param array $frameParams
 629          * @param array $handlerParams
 630          * @param bool $time
 631          * @param string $query
 632          * @return mixed
 633          */
 634         function makeThumbLink2( Title $title, $file, $frameParams = array(),
 635                 $handlerParams = array(), $time = false, $query = "" )
 636         {
 637                 global $wgStylePath;
 638                 $exists = $file && $file->exists();
 639
 640                 # Shortcuts
 641                 $fp =& $frameParams;
 642                 $hp =& $handlerParams;
 643
 644                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 645                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 646                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 647                 if ( !isset( $fp['title'] ) ) $fp['title'] = '';
 648                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 649
 650                 if ( empty( $hp['width'] ) ) {
 651                         // Reduce width for upright images when parameter 'upright' is used
 652                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 653                 }
 654                 $thumb = false;
 655
 656                 if ( !$exists ) {
 657                         $outerWidth = $hp['width'] + 2;
 658                 } else {
 659                         if ( isset( $fp['manualthumb'] ) ) {
 660                                 # Use manually specified thumbnail
 661                                 $manual_title = Title::makeTitleSafe( NS_FILE, $fp['manualthumb'] );
 662                                 if ( $manual_title ) {
 663                                         $manual_img = wfFindFile( $manual_title );
 664                                         if ( $manual_img ) {
 665                                                 $thumb = $manual_img->getUnscaledThumb( $hp );
 666                                         } else {
 667                                                 $exists = false;
 668                                         }
 669                                 }
 670                         } elseif ( isset( $fp['framed'] ) ) {
 671                                 // Use image dimensions, don't scale
 672                                 $thumb = $file->getUnscaledThumb( $hp );
 673                         } else {
 674                                 # Do not present an image bigger than the source, for bitmap-style images
 675                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 676                                 $srcWidth = $file->getWidth( $page );
 677                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 678                                         $hp['width'] = $srcWidth;
 679                                 }
 680                                 $thumb = $file->transform( $hp );
 681                         }
 682
 683                         if ( $thumb ) {
 684                                 $outerWidth = $thumb->getWidth() + 2;
 685                         } else {
 686                                 $outerWidth = $hp['width'] + 2;
 687                         }
 688                 }
 689
 690                 # ThumbnailImage::toHtml() already adds page= onto the end of DjVu URLs
 691                 # So we don't need to pass it here in $query. However, the URL for the
 692                 # zoom icon still needs it, so we make a unique query for it. See bug 14771
 693                 $url = $title->getLocalURL( $query );
 694                 if ( $page ) {
 695                         $url = wfAppendQuery( $url, 'page=' . urlencode( $page ) );
 696                 }
 697
 698                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 699                 if ( !$exists ) {
 700                         $s .= $this->makeBrokenImageLinkObj( $title, $fp['title'], '', '', '', $time == true );
 701                         $zoomIcon = '';
 702                 } elseif ( !$thumb ) {
 703                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 704                         $zoomIcon = '';
 705                 } else {
 706                         $params = array(
 707                                 'alt' => $fp['alt'],
 708                                 'title' => $fp['title'],
 709                                 'img-class' => 'thumbimage' );
 710                         $params = $this->getImageLinkMTOParams( $fp, $query ) + $params;
 711                         $s .= $thumb->toHtml( $params );
 712                         if ( isset( $fp['framed'] ) ) {
 713                                 $zoomIcon = "";
 714                         } else {
 715                                 $zoomIcon =  '<div class="magnify">' .
 716                                         '<a href="' . htmlspecialchars( $url ) . '" class="internal" ' .
 717                                                 'title="' . htmlspecialchars( wfMsg( 'thumbnail-more' ) ) . '">' .
 718                                         '<img src="' . htmlspecialchars( $wgStylePath ) . '/common/images/magnify-clip.png" ' .
 719                                                 'width="15" height="11" alt="" /></a></div>';
 720                         }
 721                 }
 722                 $s .= '  <div class="thumbcaption">' . $zoomIcon . $fp['caption'] . "</div></div></div>";
 723                 return str_replace( "\n", ' ', $s );
 724         }
 725
 726         /**
 727          * Make a "broken" link to an image
 728          *
 729          * @param $title Title object
 730          * @param $text String: link label in unescaped text form
 731          * @param $query String: query string
 732          * @param $trail String: link trail (HTML fragment)
 733          * @param $prefix String: link prefix (HTML fragment)
 734          * @param $time Boolean: a file of a certain timestamp was requested
 735          * @return String
 736          */
 737         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '', $time = false ) {
 738                 global $wgEnableUploads, $wgUploadMissingFileUrl;
 739                 if ( $title instanceof Title ) {
 740                         wfProfileIn( __METHOD__ );
 741                         $currentExists = $time ? ( wfFindFile( $title ) != false ) : false;
 742
 743                         list( $inside, $trail ) = self::splitTrail( $trail );
 744                         if ( $text == '' )
 745                                 $text = htmlspecialchars( $title->getPrefixedText() );
 746
 747                         if ( ( $wgUploadMissingFileUrl || $wgEnableUploads ) && !$currentExists ) {
 748                                 $redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
 749
 750                                 if ( $redir ) {
 751                                         wfProfileOut( __METHOD__ );
 752                                         return $this->linkKnown( $title, "$prefix$text$inside", array(), $query ) . $trail;
 753                                 }
 754
 755                                 $href = $this->getUploadUrl( $title, $query );
 756
 757                                 wfProfileOut( __METHOD__ );
 758                                 return '<a href="' . htmlspecialchars( $href ) . '" class="new" title="' .
 759                                         htmlspecialchars( $title->getPrefixedText(), ENT_QUOTES ) . '">' .
 760                                         "$prefix$text$inside</a>$trail";
 761                         } else {
 762                                 wfProfileOut( __METHOD__ );
 763                                 return $this->linkKnown( $title, "$prefix$text$inside", array(), $query ) . $trail;
 764                         }
 765                 } else {
 766                         wfProfileOut( __METHOD__ );
 767                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 768                 }
 769         }
 770
 771         /**
 772          * Get the URL to upload a certain file
 773          *
 774          * @param $destFile Title object of the file to upload
 775          * @param $query String: urlencoded query string to prepend
 776          * @return String: urlencoded URL
 777          */
 778         protected function getUploadUrl( $destFile, $query = '' ) {
 779                 global $wgUploadMissingFileUrl;
 780                 $q = 'wpDestFile=' . $destFile->getPartialUrl();
 781                 if ( $query != '' )
 782                         $q .= '&' . $query;
 783
 784                 if ( $wgUploadMissingFileUrl ) {
 785                         return wfAppendQuery( $wgUploadMissingFileUrl, $q );
 786                 } else {
 787                         $upload = SpecialPage::getTitleFor( 'Upload' );
 788                         return $upload->getLocalUrl( $q );
 789                 }
 790         }
 791
 792         /**
 793          * Create a direct link to a given uploaded file.
 794          *
 795          * @param $title Title object.
 796          * @param $text String: pre-sanitized HTML
 797          * @param $time string: MW timestamp of file creation time
 798          * @return String: HTML
 799          */
 800         public function makeMediaLinkObj( $title, $text = '', $time = false ) {
 801                 $img = wfFindFile( $title, array( 'time' => $time ) );
 802                 return $this->makeMediaLinkFile( $title, $img, $text );
 803         }
 804
 805         /**
 806          * Create a direct link to a given uploaded file.
 807          * This will make a broken link if $file is false.
 808          *
 809          * @param $title Title object.
 810          * @param $file mixed File object or false
 811          * @param $text String: pre-sanitized HTML
 812          * @return String: HTML
 813          *
 814          * @todo Handle invalid or missing images better.
 815          */
 816         public function makeMediaLinkFile( Title $title, $file, $text = '' ) {
 817                 if ( $file && $file->exists() ) {
 818                         $url = $file->getURL();
 819                         $class = 'internal';
 820                 } else {
 821                         $url = $this->getUploadUrl( $title );
 822                         $class = 'new';
 823                 }
 824                 $alt = htmlspecialchars( $title->getText(), ENT_QUOTES );
 825                 if ( $text == '' ) {
 826                         $text = $alt;
 827                 }
 828                 $u = htmlspecialchars( $url );
 829                 return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 830         }
 831
 832         /**
 833          *  Make a link to a special page given its name and, optionally,
 834          * a message key from the link text.
 835          * Usage example: $skin->specialLink( 'recentchanges' )
 836          */
 837         function specialLink( $name, $key = '' ) {
 838                 if ( $key == '' ) { $key = strtolower( $name ); }
 839
 840                 return $this->linkKnown( SpecialPage::getTitleFor( $name ) , wfMsg( $key ) );
 841         }
 842
 843         /**
 844          * Make an external link
 845          * @param $url String: URL to link to
 846          * @param $text String: text of link
 847          * @param $escape Boolean: do we escape the link text?
 848          * @param $linktype String: type of external link. Gets added to the classes
 849          * @param $attribs Array of extra attributes to <a>
 850          */
 851         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $attribs = array() ) {
 852                 $class = "external";
 853                 if ( isset($linktype) && $linktype ) {
 854                         $class .= " $linktype";
 855                 }
 856                 if ( isset($attribs['class']) && $attribs['class'] ) {
 857                         $class .= " {$attribs['class']}";
 858                 }
 859                 $attribs['class'] = $class;
 860
 861                 if ( $escape ) {
 862                         $text = htmlspecialchars( $text );
 863                 }
 864                 $link = '';
 865                 $success = wfRunHooks( 'LinkerMakeExternalLink',
 866                         array( &$url, &$text, &$link, &$attribs, $linktype ) );
 867                 if ( !$success ) {
 868                         wfDebug( "Hook LinkerMakeExternalLink changed the output of link with url {$url} and text {$text} to {$link}\n", true );
 869                         return $link;
 870                 }
 871                 $attribs['href'] = $url;
 872                 return Html::rawElement( 'a', $attribs, $text );
 873         }
 874
 875         /**
 876          * Make user link (or user contributions for unregistered users)
 877          * @param $userId   Integer: user id in database.
 878          * @param $userText String: user name in database
 879          * @return String: HTML fragment
 880          * @private
 881          */
 882         function userLink( $userId, $userText ) {
 883                 if ( $userId == 0 ) {
 884                         $page = SpecialPage::getTitleFor( 'Contributions', $userText );
 885                 } else {
 886                         $page = Title::makeTitle( NS_USER, $userText );
 887                 }
 888                 return $this->link( $page, htmlspecialchars( $userText ), array( 'class' => 'mw-userlink' ) );
 889         }
 890
 891         /**
 892          * Generate standard user tool links (talk, contributions, block link, etc.)
 893          *
 894          * @param $userId Integer: user identifier
 895          * @param $userText String: user name or IP address
 896          * @param $redContribsWhenNoEdits Boolean: should the contributions link be
 897          *        red if the user has no edits?
 898          * @param $flags Integer: customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 899          * @param $edits Integer: user edit count (optional, for performance)
 900          * @return String: HTML fragment
 901          */
 902         public function userToolLinks(
 903                 $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits = null
 904         ) {
 905                 global $wgUser, $wgDisableAnonTalk, $wgLang;
 906                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 907                 $blockable = !$flags & self::TOOL_LINKS_NOBLOCK;
 908
 909                 $items = array();
 910                 if ( $talkable ) {
 911                         $items[] = $this->userTalkLink( $userId, $userText );
 912                 }
 913                 if ( $userId ) {
 914                         // check if the user has an edit
 915                         $attribs = array();
 916                         if ( $redContribsWhenNoEdits ) {
 917                                 $count = !is_null( $edits ) ? $edits : User::edits( $userId );
 918                                 if ( $count == 0 ) {
 919                                         $attribs['class'] = 'new';
 920                                 }
 921                         }
 922                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 923
 924                         $items[] = $this->link( $contribsPage, wfMsgHtml( 'contribslink' ), $attribs );
 925                 }
 926                 if ( $blockable && $wgUser->isAllowed( 'block' ) ) {
 927                         $items[] = $this->blockLink( $userId, $userText );
 928                 }
 929
 930                 if ( $items ) {
 931                         return ' <span class="mw-usertoollinks">(' . $wgLang->pipeList( $items ) . ')</span>';
 932                 } else {
 933                         return '';
 934                 }
 935         }
 936
 937         /**
 938          * Alias for userToolLinks( $userId, $userText, true );
 939          * @param $userId Integer: user identifier
 940          * @param $userText String: user name or IP address
 941          * @param $edits Integer: user edit count (optional, for performance)
 942          */
 943         public function userToolLinksRedContribs( $userId, $userText, $edits = null ) {
 944                 return $this->userToolLinks( $userId, $userText, true, 0, $edits );
 945         }
 946
 947
 948         /**
 949          * @param $userId Integer: user id in database.
 950          * @param $userText String: user name in database.
 951          * @return String: HTML fragment with user talk link
 952          * @private
 953          */
 954         function userTalkLink( $userId, $userText ) {
 955                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 956                 $userTalkLink = $this->link( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 957                 return $userTalkLink;
 958         }
 959
 960         /**
 961          * @param $userId Integer: userid
 962          * @param $userText String: user name in database.
 963          * @return String: HTML fragment with block link
 964          * @private
 965          */
 966         function blockLink( $userId, $userText ) {
 967                 $blockPage = SpecialPage::getTitleFor( 'Block', $userText );
 968                 $blockLink = $this->link( $blockPage, wfMsgHtml( 'blocklink' ) );
 969                 return $blockLink;
 970         }
 971
 972         /**
 973          * Generate a user link if the current user is allowed to view it
 974          * @param $rev Revision object.
 975          * @param $isPublic Boolean: show only if all users can see it
 976          * @return String: HTML fragment
 977          */
 978         function revUserLink( $rev, $isPublic = false ) {
 979                 if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 980                         $link = wfMsgHtml( 'rev-deleted-user' );
 981                 } else if ( $rev->userCan( Revision::DELETED_USER ) ) {
 982                         $link = $this->userLink( $rev->getUser( Revision::FOR_THIS_USER ),
 983                                 $rev->getUserText( Revision::FOR_THIS_USER ) );
 984                 } else {
 985                         $link = wfMsgHtml( 'rev-deleted-user' );
 986                 }
 987                 if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 988                         return '<span class="history-deleted">' . $link . '</span>';
 989                 }
 990                 return $link;
 991         }
 992
 993         /**
 994          * Generate a user tool link cluster if the current user is allowed to view it
 995          * @param $rev Revision object.
 996          * @param $isPublic Boolean: show only if all users can see it
 997          * @return string HTML
 998          */
 999         function revUserTools( $rev, $isPublic = false ) {
1000                 if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
1001                         $link = wfMsgHtml( 'rev-deleted-user' );
1002                 } else if ( $rev->userCan( Revision::DELETED_USER ) ) {
1003                         $userId = $rev->getUser( Revision::FOR_THIS_USER );
1004                         $userText = $rev->getUserText( Revision::FOR_THIS_USER );
1005                         $link = $this->userLink( $userId, $userText ) .
1006                                 ' ' . $this->userToolLinks( $userId, $userText );
1007                 } else {
1008                         $link = wfMsgHtml( 'rev-deleted-user' );
1009                 }
1010                 if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
1011                         return ' <span class="history-deleted">' . $link . '</span>';
1012                 }
1013                 return $link;
1014         }
1015
1016         /**
1017          * This function is called by all recent changes variants, by the page history,
1018          * and by the user contributions list. It is responsible for formatting edit
1019          * comments. It escapes any HTML in the comment, but adds some CSS to format
1020          * auto-generated comments (from section editing) and formats [[wikilinks]].
1021          *
1022          * @author Erik Moeller <moeller@scireview.de>
1023          *
1024          * Note: there's not always a title to pass to this function.
1025          * Since you can't set a default parameter for a reference, I've turned it
1026          * temporarily to a value pass. Should be adjusted further. --brion
1027          *
1028          * @param $comment String
1029          * @param $title Mixed: Title object (to generate link to the section in autocomment) or null
1030          * @param $local Boolean: whether section links should refer to local page
1031          */
1032         function formatComment( $comment, $title = null, $local = false ) {
1033                 wfProfileIn( __METHOD__ );
1034
1035                 # Sanitize text a bit:
1036                 $comment = str_replace( "\n", " ", $comment );
1037                 # Allow HTML entities (for bug 13815)
1038                 $comment = Sanitizer::escapeHtmlAllowEntities( $comment );
1039
1040                 # Render autocomments and make links:
1041                 $comment = $this->formatAutocomments( $comment, $title, $local );
1042                 $comment = $this->formatLinksInComment( $comment, $title, $local );
1043
1044                 wfProfileOut( __METHOD__ );
1045                 return $comment;
1046         }
1047
1048         /**
1049          * The pattern for autogen comments is / * foo * /, which makes for
1050          * some nasty regex.
1051          * We look for all comments, match any text before and after the comment,
1052          * add a separator where needed and format the comment itself with CSS
1053          * Called by Linker::formatComment.
1054          *
1055          * @param $comment String: comment text
1056          * @param $title An optional title object used to links to sections
1057          * @param $local Boolean: whether section links should refer to local page
1058          * @return String: formatted comment
1059          */
1060         private function formatAutocomments( $comment, $title = null, $local = false ) {
1061                 // Bah!
1062                 $this->autocommentTitle = $title;
1063                 $this->autocommentLocal = $local;
1064                 $comment = preg_replace_callback(
1065                         '!(.*)/\*\s*(.*?)\s*\*/(.*)!',
1066                         array( $this, 'formatAutocommentsCallback' ),
1067                         $comment );
1068                 unset( $this->autocommentTitle );
1069                 unset( $this->autocommentLocal );
1070                 return $comment;
1071         }
1072
1073         private function formatAutocommentsCallback( $match ) {
1074                 $title = $this->autocommentTitle;
1075                 $local = $this->autocommentLocal;
1076
1077                 $pre = $match[1];
1078                 $auto = $match[2];
1079                 $post = $match[3];
1080                 $link = '';
1081                 if ( $title ) {
1082                         $section = $auto;
1083
1084                         # Remove links that a user may have manually put in the autosummary
1085                         # This could be improved by copying as much of Parser::stripSectionName as desired.
1086                         $section = str_replace( '[[:', '', $section );
1087                         $section = str_replace( '[[', '', $section );
1088                         $section = str_replace( ']]', '', $section );
1089
1090                         $section = Sanitizer::normalizeSectionNameWhitespace( $section ); # bug 22784
1091                         if ( $local ) {
1092                                 $sectionTitle = Title::newFromText( '#' . $section );
1093                         } else {
1094                                 $sectionTitle = Title::makeTitleSafe( $title->getNamespace(),
1095                                         $title->getDBkey(), $section );
1096                         }
1097                         if ( $sectionTitle ) {
1098                                 $link = $this->link( $sectionTitle,
1099                                         htmlspecialchars( wfMsgForContent( 'sectionlink' ) ), array(), array(),
1100                                         'noclasses' );
1101                         } else {
1102                                 $link = '';
1103                         }
1104                 }
1105                 $auto = "$link$auto";
1106                 if ( $pre ) {
1107                         # written summary $presep autocomment (summary /* section */)
1108                         $auto = wfMsgExt( 'autocomment-prefix', array( 'escapenoentities', 'content' ) ) . $auto;
1109                 }
1110                 if ( $post ) {
1111                         # autocomment $postsep written summary (/* section */ summary)
1112                         $auto .= wfMsgExt( 'colon-separator', array( 'escapenoentities', 'content' ) );
1113                 }
1114                 $auto = '<span class="autocomment">' . $auto . '</span>';
1115                 $comment = $pre . $auto . $post;
1116                 return $comment;
1117         }
1118
1119         /**
1120          * Formats wiki links and media links in text; all other wiki formatting
1121          * is ignored
1122          *
1123          * @todo Fixme: doesn't handle sub-links as in image thumb texts like the main parser
1124          * @param $comment String: text to format links in
1125          * @param $title An optional title object used to links to sections
1126          * @param $local Boolean: whether section links should refer to local page
1127          * @return String
1128          */
1129         public function formatLinksInComment( $comment, $title = null, $local = false ) {
1130                 $this->commentContextTitle = $title;
1131                 $this->commentLocal = $local;
1132                 $html = preg_replace_callback(
1133                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1134                         array( $this, 'formatLinksInCommentCallback' ),
1135                         $comment );
1136                 unset( $this->commentContextTitle );
1137                 unset( $this->commentLocal );
1138                 return $html;
1139         }
1140
1141         protected function formatLinksInCommentCallback( $match ) {
1142                 global $wgContLang;
1143
1144                 $medians = '(?:' . preg_quote( MWNamespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1145                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1146
1147                 $comment = $match[0];
1148
1149                 # fix up urlencoded title texts (copied from Parser::replaceInternalLinks)
1150                 if ( strpos( $match[1], '%' ) !== false ) {
1151                         $match[1] = str_replace( array( '<', '>' ), array( '&lt;', '&gt;' ), rawurldecode( $match[1] ) );
1152                 }
1153
1154                 # Handle link renaming [[foo|text]] will show link as "text"
1155                 if ( $match[3] != "" ) {
1156                         $text = $match[3];
1157                 } else {
1158                         $text = $match[1];
1159                 }
1160                 $submatch = array();
1161                 $thelink = null;
1162                 if ( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1163                         # Media link; trail not supported.
1164                         $linkRegexp = '/\[\[(.*?)\]\]/';
1165                         $title = Title::makeTitleSafe( NS_FILE, $submatch[1] );
1166                         $thelink = $this->makeMediaLinkObj( $title, $text );
1167                 } else {
1168                         # Other kind of link
1169                         if ( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1170                                 $trail = $submatch[1];
1171                         } else {
1172                                 $trail = "";
1173                         }
1174                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1175                         if ( isset( $match[1][0] ) && $match[1][0] == ':' )
1176                                 $match[1] = substr( $match[1], 1 );
1177                         list( $inside, $trail ) = Linker::splitTrail( $trail );
1178
1179                         $linkText = $text;
1180                         $linkTarget = Linker::normalizeSubpageLink( $this->commentContextTitle,
1181                                 $match[1], $linkText );
1182
1183                         $target = Title::newFromText( $linkTarget );
1184                         if ( $target ) {
1185                                 if ( $target->getText() == '' && $target->getInterwiki() === ''
1186                                         && !$this->commentLocal && $this->commentContextTitle )
1187                                 {
1188                                         $newTarget = clone ( $this->commentContextTitle );
1189                                         $newTarget->setFragment( '#' . $target->getFragment() );
1190                                         $target = $newTarget;
1191                                 }
1192                                 $thelink = $this->link(
1193                                         $target,
1194                                         $linkText . $inside
1195                                 ) . $trail;
1196                         }
1197                 }
1198                 if ( $thelink ) {
1199                         // If the link is still valid, go ahead and replace it in!
1200                         $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1201                 }
1202
1203                 return $comment;
1204         }
1205
1206         /**
1207          * @static
1208          * @param $contextTitle Title
1209          * @param  $target
1210          * @param  $text
1211          * @return string
1212          */
1213         static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
1214                 # Valid link forms:
1215                 # Foobar -- normal
1216                 # :Foobar -- override special treatment of prefix (images, language links)
1217                 # /Foobar -- convert to CurrentPage/Foobar
1218                 # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
1219                 # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
1220                 # ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage
1221
1222                 wfProfileIn( __METHOD__ );
1223                 $ret = $target; # default return value is no change
1224
1225                 # Some namespaces don't allow subpages,
1226                 # so only perform processing if subpages are allowed
1227                 if ( $contextTitle && MWNamespace::hasSubpages( $contextTitle->getNamespace() ) ) {
1228                         $hash = strpos( $target, '#' );
1229                         if ( $hash !== false ) {
1230                                 $suffix = substr( $target, $hash );
1231                                 $target = substr( $target, 0, $hash );
1232                         } else {
1233                                 $suffix = '';
1234                         }
1235                         # bug 7425
1236                         $target = trim( $target );
1237                         # Look at the first character
1238                         if ( $target != '' && $target { 0 } === '/' ) {
1239                                 # / at end means we don't want the slash to be shown
1240                                 $m = array();
1241                                 $trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
1242                                 if ( $trailingSlashes ) {
1243                                         $noslash = $target = substr( $target, 1, -strlen( $m[0][0] ) );
1244                                 } else {
1245                                         $noslash = substr( $target, 1 );
1246                                 }
1247
1248                                 $ret = $contextTitle->getPrefixedText() . '/' . trim( $noslash ) . $suffix;
1249                                 if ( $text === '' ) {
1250                                         $text = $target . $suffix;
1251                                 } # this might be changed for ugliness reasons
1252                         } else {
1253                                 # check for .. subpage backlinks
1254                                 $dotdotcount = 0;
1255                                 $nodotdot = $target;
1256                                 while ( strncmp( $nodotdot, "../", 3 ) == 0 ) {
1257                                         ++$dotdotcount;
1258                                         $nodotdot = substr( $nodotdot, 3 );
1259                                 }
1260                                 if ( $dotdotcount > 0 ) {
1261                                         $exploded = explode( '/', $contextTitle->GetPrefixedText() );
1262                                         if ( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
1263                                                 $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
1264                                                 # / at the end means don't show full path
1265                                                 if ( substr( $nodotdot, -1, 1 ) === '/' ) {
1266                                                         $nodotdot = substr( $nodotdot, 0, -1 );
1267                                                         if ( $text === '' ) {
1268                                                                 $text = $nodotdot . $suffix;
1269                                                         }
1270                                                 }
1271                                                 $nodotdot = trim( $nodotdot );
1272                                                 if ( $nodotdot != '' ) {
1273                                                         $ret .= '/' . $nodotdot;
1274                                                 }
1275                                                 $ret .= $suffix;
1276                                         }
1277                                 }
1278                         }
1279                 }
1280
1281                 wfProfileOut( __METHOD__ );
1282                 return $ret;
1283         }
1284
1285         /**
1286          * Wrap a comment in standard punctuation and formatting if
1287          * it's non-empty, otherwise return empty string.
1288          *
1289          * @param $comment String
1290          * @param $title Mixed: Title object (to generate link to section in autocomment) or null
1291          * @param $local Boolean: whether section links should refer to local page
1292          *
1293          * @return string
1294          */
1295         function commentBlock( $comment, $title = null, $local = false ) {
1296                 // '*' used to be the comment inserted by the software way back
1297                 // in antiquity in case none was provided, here for backwards
1298                 // compatability, acc. to brion -ævar
1299                 if ( $comment == '' || $comment == '*' ) {
1300                         return '';
1301                 } else {
1302                         $formatted = $this->formatComment( $comment, $title, $local );
1303                         return " <span class=\"comment\">($formatted)</span>";
1304                 }
1305         }
1306
1307         /**
1308          * Wrap and format the given revision's comment block, if the current
1309          * user is allowed to view it.
1310          *
1311          * @param $rev Revision object
1312          * @param $local Boolean: whether section links should refer to local page
1313          * @param $isPublic Boolean: show only if all users can see it
1314          * @return String: HTML fragment
1315          */
1316         function revComment( Revision $rev, $local = false, $isPublic = false ) {
1317                 if ( $rev->getRawComment() == "" ) {
1318                         return "";
1319                 }
1320                 if ( $rev->isDeleted( Revision::DELETED_COMMENT ) && $isPublic ) {
1321                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1322                 } else if ( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1323                         $block = $this->commentBlock( $rev->getComment( Revision::FOR_THIS_USER ),
1324                                 $rev->getTitle(), $local );
1325                 } else {
1326                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1327                 }
1328                 if ( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1329                         return " <span class=\"history-deleted\">$block</span>";
1330                 }
1331                 return $block;
1332         }
1333
1334         public function formatRevisionSize( $size ) {
1335                 if ( $size == 0 ) {
1336                         $stxt = wfMsgExt( 'historyempty', 'parsemag' );
1337                 } else {
1338                         global $wgLang;
1339                         $stxt = wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $size ) );
1340                         $stxt = "($stxt)";
1341                 }
1342                 $stxt = htmlspecialchars( $stxt );
1343                 return "<span class=\"history-size\">$stxt</span>";
1344         }
1345
1346         /**
1347          * Add another level to the Table of Contents
1348          */
1349         function tocIndent() {
1350                 return "\n<ul>";
1351         }
1352
1353         /**
1354          * Finish one or more sublevels on the Table of Contents
1355          */
1356         function tocUnindent( $level ) {
1357                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level > 0 ? $level : 0 );
1358         }
1359
1360         /**
1361          * parameter level defines if we are on an indentation level
1362          */
1363         function tocLine( $anchor, $tocline, $tocnumber, $level, $sectionIndex = false ) {
1364                 $classes = "toclevel-$level";
1365                 if ( $sectionIndex !== false )
1366                         $classes .= " tocsection-$sectionIndex";
1367                 return "\n<li class=\"$classes\"><a href=\"#" .
1368                         $anchor . '"><span class="tocnumber">' .
1369                         $tocnumber . '</span> <span class="toctext">' .
1370                         $tocline . '</span></a>';
1371         }
1372
1373         /**
1374          * End a Table Of Contents line.
1375          * tocUnindent() will be used instead if we're ending a line below
1376          * the new level.
1377          */
1378         function tocLineEnd() {
1379                 return "</li>\n";
1380         }
1381
1382         /**
1383          * Wraps the TOC in a table and provides the hide/collapse javascript.
1384          *
1385          * @param $toc String: html of the Table Of Contents
1386          * @param $lang mixed: Language code for the toc title
1387          * @return String: full html of the TOC
1388          */
1389         function tocList( $toc, $lang = false ) {
1390                 $title = wfMsgExt( 'toc', array( 'language' => $lang, 'escape' ) );
1391                 return
1392                    '<table id="toc" class="toc"><tr><td>'
1393                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1394                  . $toc
1395                  . "</ul>\n</td></tr></table>\n";
1396         }
1397
1398         /**
1399          * Generate a table of contents from a section tree
1400          * Currently unused.
1401          *
1402          * @param $tree Return value of ParserOutput::getSections()
1403          * @return String: HTML fragment
1404          */
1405         public function generateTOC( $tree ) {
1406                 $toc = '';
1407                 $lastLevel = 0;
1408                 foreach ( $tree as $section ) {
1409                         if ( $section['toclevel'] > $lastLevel )
1410                                 $toc .= $this->tocIndent();
1411                         else if ( $section['toclevel'] < $lastLevel )
1412                                 $toc .= $this->tocUnindent(
1413                                         $lastLevel - $section['toclevel'] );
1414                         else
1415                                 $toc .= $this->tocLineEnd();
1416
1417                         $toc .= $this->tocLine( $section['anchor'],
1418                                 $section['line'], $section['number'],
1419                                 $section['toclevel'], $section['index'] );
1420                         $lastLevel = $section['toclevel'];
1421                 }
1422                 $toc .= $this->tocLineEnd();
1423                 return $this->tocList( $toc );
1424         }
1425
1426         /**
1427          * Create a section edit link.  This supersedes editSectionLink() and
1428          * editSectionLinkForOther().
1429          *
1430          * @param $nt      Title  The title being linked to (may not be the same as
1431          *   $wgTitle, if the section is included from a template)
1432          * @param $section string The designation of the section being pointed to,
1433          *   to be included in the link, like "&section=$section"
1434          * @param $tooltip string The tooltip to use for the link: will be escaped
1435          *   and wrapped in the 'editsectionhint' message
1436          * @param $lang    string Language code
1437          * @return         string HTML to use for edit link
1438          */
1439         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1440                 // HTML generated here should probably have userlangattributes
1441                 // added to it for LTR text on RTL pages
1442                 $attribs = array();
1443                 if ( !is_null( $tooltip ) ) {
1444                         # Bug 25462: undo double-escaping.
1445                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1446                         $attribs['title'] = wfMsgReal( 'editsectionhint', array( $tooltip ), true, $lang );
1447                 }
1448                 $link = $this->link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1449                         $attribs,
1450                         array( 'action' => 'edit', 'section' => $section ),
1451                         array( 'noclasses', 'known' )
1452                 );
1453
1454                 # Run the old hook.  This takes up half of the function . . . hopefully
1455                 # we can rid of it someday.
1456                 $attribs = '';
1457                 if ( $tooltip ) {
1458                         $attribs = htmlspecialchars( wfMsgReal( 'editsectionhint', array( $tooltip ), true, $lang ) );
1459                         $attribs = " title=\"$attribs\"";
1460                 }
1461                 $result = null;
1462                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1463                 if ( !is_null( $result ) ) {
1464                         # For reverse compatibility, add the brackets *after* the hook is
1465                         # run, and even add them to hook-provided text.  (This is the main
1466                         # reason that the EditSectionLink hook is deprecated in favor of
1467                         # DoEditSectionLink: it can't change the brackets or the span.)
1468                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1469                         return "<span class=\"editsection\">$result</span>";
1470                 }
1471
1472                 # Add the brackets and the span, and *then* run the nice new hook, with
1473                 # clean and non-redundant arguments.
1474                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1475                 $result = "<span class=\"editsection\">$result</span>";
1476
1477                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1478                 return $result;
1479         }
1480
1481         /**
1482          * Create a headline for content
1483          *
1484          * @param $level Integer: the level of the headline (1-6)
1485          * @param $attribs String: any attributes for the headline, starting with
1486          *                 a space and ending with '>'
1487          *                 This *must* be at least '>' for no attribs
1488          * @param $anchor String: the anchor to give the headline (the bit after the #)
1489          * @param $text String: the text of the header
1490          * @param $link String: HTML to add for the section edit link
1491          * @param $legacyAnchor Mixed: a second, optional anchor to give for
1492          *   backward compatibility (false to omit)
1493          *
1494          * @return String: HTML headline
1495          */
1496         public function makeHeadline( $level, $attribs, $anchor, $text, $link, $legacyAnchor = false ) {
1497                 $ret = "<h$level$attribs"
1498                         . $link
1499                         . " <span class=\"mw-headline\" id=\"$anchor\">$text</span>"
1500                         . "</h$level>";
1501                 if ( $legacyAnchor !== false ) {
1502                         $ret = "<div id=\"$legacyAnchor\"></div>$ret";
1503                 }
1504                 return $ret;
1505         }
1506
1507         /**
1508          * Split a link trail, return the "inside" portion and the remainder of the trail
1509          * as a two-element array
1510          */
1511         static function splitTrail( $trail ) {
1512                 static $regex = false;
1513                 if ( $regex === false ) {
1514                         global $wgContLang;
1515                         $regex = $wgContLang->linkTrail();
1516                 }
1517                 $inside = '';
1518                 if ( $trail !== '' ) {
1519                         $m = array();
1520                         if ( preg_match( $regex, $trail, $m ) ) {
1521                                 $inside = $m[1];
1522                                 $trail = $m[2];
1523                         }
1524                 }
1525                 return array( $inside, $trail );
1526         }
1527
1528         /**
1529          * Generate a rollback link for a given revision.  Currently it's the
1530          * caller's responsibility to ensure that the revision is the top one. If
1531          * it's not, of course, the user will get an error message.
1532          *
1533          * If the calling page is called with the parameter &bot=1, all rollback
1534          * links also get that parameter. It causes the edit itself and the rollback
1535          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1536          * changes, so this allows sysops to combat a busy vandal without bothering
1537          * other users.
1538          *
1539          * @param $rev Revision object
1540          */
1541         function generateRollback( $rev ) {
1542                 return '<span class="mw-rollback-link">['
1543                         . $this->buildRollbackLink( $rev )
1544                         . ']</span>';
1545         }
1546
1547         /**
1548          * Build a raw rollback link, useful for collections of "tool" links
1549          *
1550          * @param $rev Revision object
1551          * @return String: HTML fragment
1552          */
1553         public function buildRollbackLink( $rev ) {
1554                 global $wgRequest, $wgUser;
1555                 $title = $rev->getTitle();
1556                 $query = array(
1557                         'action' => 'rollback',
1558                         'from' => $rev->getUserText(),
1559                         'token' => $wgUser->editToken( array( $title->getPrefixedText(), $rev->getUserText() ) ),
1560                 );
1561                 if ( $wgRequest->getBool( 'bot' ) ) {
1562                         $query['bot'] = '1';
1563                         $query['hidediff'] = '1'; // bug 15999
1564                 }
1565                 return $this->link(
1566                         $title,
1567                         wfMsgHtml( 'rollbacklink' ),
1568                         array( 'title' => wfMsg( 'tooltip-rollback' ) ),
1569                         $query,
1570                         array( 'known', 'noclasses' )
1571                 );
1572         }
1573
1574         /**
1575          * Returns HTML for the "templates used on this page" list.
1576          *
1577          * @param $templates Array of templates from Article::getUsedTemplate
1578          * or similar
1579          * @param $preview Boolean: whether this is for a preview
1580          * @param $section Boolean: whether this is for a section edit
1581          * @return String: HTML output
1582          */
1583         public function formatTemplates( $templates, $preview = false, $section = false ) {
1584                 wfProfileIn( __METHOD__ );
1585
1586                 $outText = '';
1587                 if ( count( $templates ) > 0 ) {
1588                         # Do a batch existence check
1589                         $batch = new LinkBatch;
1590                         foreach ( $templates as $title ) {
1591                                 $batch->addObj( $title );
1592                         }
1593                         $batch->execute();
1594
1595                         # Construct the HTML
1596                         $outText = '<div class="mw-templatesUsedExplanation">';
1597                         if ( $preview ) {
1598                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ), count( $templates ) );
1599                         } elseif ( $section ) {
1600                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ), count( $templates ) );
1601                         } else {
1602                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ), count( $templates ) );
1603                         }
1604                         $outText .= "</div><ul>\n";
1605
1606                         usort( $templates, array( 'Title', 'compare' ) );
1607                         foreach ( $templates as $titleObj ) {
1608                                 $r = $titleObj->getRestrictions( 'edit' );
1609                                 if ( in_array( 'sysop', $r ) ) {
1610                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1611                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1612                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1613                                 } else {
1614                                         $protected = '';
1615                                 }
1616                                 if ( $titleObj->quickUserCan( 'edit' ) ) {
1617                                         $editLink = $this->link(
1618                                                 $titleObj,
1619                                                 wfMsg( 'editlink' ),
1620                                                 array(),
1621                                                 array( 'action' => 'edit' )
1622                                         );
1623                                 } else {
1624                                         $editLink = $this->link(
1625                                                 $titleObj,
1626                                                 wfMsg( 'viewsourcelink' ),
1627                                                 array(),
1628                                                 array( 'action' => 'edit' )
1629                                         );
1630                                 }
1631                                 $outText .= '<li>' . $this->link( $titleObj ) . ' (' . $editLink . ') ' . $protected . '</li>';
1632                         }
1633                         $outText .= '</ul>';
1634                 }
1635                 wfProfileOut( __METHOD__  );
1636                 return $outText;
1637         }
1638
1639         /**
1640          * Returns HTML for the "hidden categories on this page" list.
1641          *
1642          * @param $hiddencats Array of hidden categories from Article::getHiddenCategories
1643          * or similar
1644          * @return String: HTML output
1645          */
1646         public function formatHiddenCategories( $hiddencats ) {
1647                 global $wgLang;
1648                 wfProfileIn( __METHOD__ );
1649
1650                 $outText = '';
1651                 if ( count( $hiddencats ) > 0 ) {
1652                         # Construct the HTML
1653                         $outText = '<div class="mw-hiddenCategoriesExplanation">';
1654                         $outText .= wfMsgExt( 'hiddencategories', array( 'parse' ), $wgLang->formatnum( count( $hiddencats ) ) );
1655                         $outText .= "</div><ul>\n";
1656
1657                         foreach ( $hiddencats as $titleObj ) {
1658                                 $outText .= '<li>' . $this->link( $titleObj, null, array(), array(), 'known' ) . "</li>\n"; # If it's hidden, it must exist - no need to check with a LinkBatch
1659                         }
1660                         $outText .= '</ul>';
1661                 }
1662                 wfProfileOut( __METHOD__  );
1663                 return $outText;
1664         }
1665
1666         /**
1667          * Format a size in bytes for output, using an appropriate
1668          * unit (B, KB, MB or GB) according to the magnitude in question
1669          *
1670          * @param $size Size to format
1671          * @return String
1672          */
1673         public function formatSize( $size ) {
1674                 global $wgLang;
1675                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1676         }
1677
1678         /**
1679          * Given the id of an interface element, constructs the appropriate title
1680          * attribute from the system messages.  (Note, this is usually the id but
1681          * isn't always, because sometimes the accesskey needs to go on a different
1682          * element than the id, for reverse-compatibility, etc.)
1683          *
1684          * @param $name String: id of the element, minus prefixes.
1685          * @param $options Mixed: null or the string 'withaccess' to add an access-
1686          *   key hint
1687          * @return String: contents of the title attribute (which you must HTML-
1688          *   escape), or false for no title attribute
1689          */
1690         public function titleAttrib( $name, $options = null ) {
1691                 wfProfileIn( __METHOD__ );
1692
1693                 $message = wfMessage( "tooltip-$name" );
1694
1695                 if ( !$message->exists() ) {
1696                         $tooltip = false;
1697                 } else {
1698                         $tooltip = $message->text();
1699                         # Compatibility: formerly some tooltips had [alt-.] hardcoded
1700                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1701                         # Message equal to '-' means suppress it.
1702                         if (  $tooltip == '-' ) {
1703                                 $tooltip = false;
1704                         }
1705                 }
1706
1707                 if ( $options == 'withaccess' ) {
1708                         $accesskey = $this->accesskey( $name );
1709                         if ( $accesskey !== false ) {
1710                                 if ( $tooltip === false || $tooltip === '' ) {
1711                                         $tooltip = "[$accesskey]";
1712                                 } else {
1713                                         $tooltip .= " [$accesskey]";
1714                                 }
1715                         }
1716                 }
1717
1718                 wfProfileOut( __METHOD__ );
1719                 return $tooltip;
1720         }
1721
1722         /**
1723          * Given the id of an interface element, constructs the appropriate
1724          * accesskey attribute from the system messages.  (Note, this is usually
1725          * the id but isn't always, because sometimes the accesskey needs to go on
1726          * a different element than the id, for reverse-compatibility, etc.)
1727          *
1728          * @param $name String: id of the element, minus prefixes.
1729          * @return String: contents of the accesskey attribute (which you must HTML-
1730          *   escape), or false for no accesskey attribute
1731          */
1732         public function accesskey( $name ) {
1733                 if ( isset( $this->accesskeycache[$name] ) ) {
1734                         return $this->accesskeycache[$name];
1735                 }
1736                 wfProfileIn( __METHOD__ );
1737
1738                 $message = wfMessage( "accesskey-$name" );
1739
1740                 if ( !$message->exists() ) {
1741                         $accesskey = false;
1742                 } else {
1743                         $accesskey = $message->plain();
1744                         if ( $accesskey === '' || $accesskey === '-' ) {
1745                                 # FIXME: Per standard MW behavior, a value of '-' means to suppress the
1746                                 # attribute, but this is broken for accesskey: that might be a useful
1747                                 # value.
1748                                 $accesskey = false;
1749                         }
1750                 }
1751
1752                 wfProfileOut( __METHOD__ );
1753                 return $this->accesskeycache[$name] = $accesskey;
1754         }
1755
1756         /**
1757          * Creates a (show/hide) link for deleting revisions/log entries
1758          *
1759          * @param $query Array: query parameters to be passed to link()
1760          * @param $restricted Boolean: set to true to use a <strong> instead of a <span>
1761          * @param $delete Boolean: set to true to use (show/hide) rather than (show)
1762          *
1763          * @return String: HTML <a> link to Special:Revisiondelete, wrapped in a
1764          * span to allow for customization of appearance with CSS
1765          */
1766         public function revDeleteLink( $query = array(), $restricted = false, $delete = true ) {
1767                 $sp = SpecialPage::getTitleFor( 'Revisiondelete' );
1768                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1769                 $tag = $restricted ? 'strong' : 'span';
1770                 $link = $this->link( $sp, $text, array(), $query, array( 'known', 'noclasses' ) );
1771                 return Xml::tags( $tag, array( 'class' => 'mw-revdelundel-link' ), "($link)" );
1772         }
1773
1774         /**
1775          * Creates a dead (show/hide) link for deleting revisions/log entries
1776          *
1777          * @param $delete Boolean: set to true to use (show/hide) rather than (show)
1778          *
1779          * @return string HTML text wrapped in a span to allow for customization
1780          * of appearance with CSS
1781          */
1782         public function revDeleteLinkDisabled( $delete = true ) {
1783                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1784                 return Xml::tags( 'span', array( 'class' => 'mw-revdelundel-link' ), "($text)" );
1785         }
1786
1787         /* Deprecated methods */
1788
1789         /**
1790          * @deprecated since 1.16 Use link()
1791          *
1792          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
1793          * it if you already have a title object handy. See makeLinkObj for further documentation.
1794          *
1795          * @param $title String: the text of the title
1796          * @param $text  String: link text
1797          * @param $query String: optional query part
1798          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1799          *                      be included in the link text. Other characters will be appended after
1800          *                      the end of the link.
1801          */
1802         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
1803                 wfProfileIn( __METHOD__ );
1804                 $nt = Title::newFromText( $title );
1805                 if ( $nt instanceof Title ) {
1806                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
1807                 } else {
1808                         wfDebug( 'Invalid title passed to Linker::makeLink(): "' . $title . "\"\n" );
1809                         $result = $text == "" ? $title : $text;
1810                 }
1811
1812                 wfProfileOut( __METHOD__ );
1813                 return $result;
1814         }
1815
1816         /**
1817          * @deprecated since 1.16 Use link()
1818          *
1819          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
1820          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
1821          *
1822          * @param $title String: the text of the title
1823          * @param $text  String: link text
1824          * @param $query String: optional query part
1825          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1826          *                      be included in the link text. Other characters will be appended after
1827          *                      the end of the link.
1828          * @param $prefix String: Optional prefix
1829          * @param $aprops String: extra attributes to the a-element
1830          */
1831         function makeKnownLink(
1832                 $title, $text = '', $query = '', $trail = '', $prefix = '', $aprops = ''
1833         ) {
1834                 $nt = Title::newFromText( $title );
1835                 if ( $nt instanceof Title ) {
1836                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
1837                 } else {
1838                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "' . $title . "\"\n" );
1839                         return $text == '' ? $title : $text;
1840                 }
1841         }
1842
1843         /**
1844          * @deprecated since 1.16 Use link()
1845          *
1846          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
1847          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
1848          *
1849          * @param $title String: The text of the title
1850          * @param $text String: Link text
1851          * @param $query String: Optional query part
1852          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
1853          *               be included in the link text. Other characters will be appended after
1854          *               the end of the link.
1855          */
1856         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
1857                 $nt = Title::newFromText( $title );
1858                 if ( $nt instanceof Title ) {
1859                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
1860                 } else {
1861                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "' . $title . "\"\n" );
1862                         return $text == '' ? $title : $text;
1863                 }
1864         }
1865
1866         /**
1867          * @deprecated since 1.16 Use link()
1868          *
1869          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
1870          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
1871          *
1872          * @param $title String: the text of the title
1873          * @param $text  String: link text
1874          * @param $query String: optional query part
1875          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1876          *                      be included in the link text. Other characters will be appended after
1877          *                      the end of the link.
1878          */
1879         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
1880                 wfDeprecated( __METHOD__ );
1881                 $nt = Title::newFromText( $title );
1882                 if ( $nt instanceof Title ) {
1883                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
1884                 } else {
1885                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "' . $title . "\"\n" );
1886                         return $text == '' ? $title : $text;
1887                 }
1888         }
1889
1890         /**
1891          * @deprecated since 1.16 Use link()
1892          *
1893          * Make a link for a title which may or may not be in the database. If you need to
1894          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
1895          * call to this will result in a DB query.
1896          *
1897          * @param $nt     Title: the title object to make the link from, e.g. from
1898          *                      Title::newFromText.
1899          * @param $text  String: link text
1900          * @param $query String: optional query part
1901          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1902          *                      be included in the link text. Other characters will be appended after
1903          *                      the end of the link.
1904          * @param $prefix String: optional prefix. As trail, only before instead of after.
1905          */
1906         function makeLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
1907                 wfProfileIn( __METHOD__ );
1908                 $query = wfCgiToArray( $query );
1909                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1910                 if ( $text === '' ) {
1911                         $text = $this->linkText( $nt );
1912                 }
1913
1914                 $ret = $this->link( $nt, "$prefix$text$inside", array(), $query ) . $trail;
1915
1916                 wfProfileOut( __METHOD__ );
1917                 return $ret;
1918         }
1919
1920         /**
1921          * @deprecated since 1.16 Use link()
1922          *
1923          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
1924          * it doesn't have to do a database query. It's also valid for interwiki titles and special
1925          * pages.
1926          *
1927          * @param $title  Title object of target page
1928          * @param $text   String: text to replace the title
1929          * @param $query  String: link target
1930          * @param $trail  String: text after link
1931          * @param $prefix String: text before link text
1932          * @param $aprops String: extra attributes to the a-element
1933          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
1934          * @return the a-element
1935          */
1936         function makeKnownLinkObj(
1937                 $title, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = ''
1938         ) {
1939                 wfProfileIn( __METHOD__ );
1940
1941                 if ( $text == '' ) {
1942                         $text = $this->linkText( $title );
1943                 }
1944                 $attribs = Sanitizer::mergeAttributes(
1945                         Sanitizer::decodeTagAttributes( $aprops ),
1946                         Sanitizer::decodeTagAttributes( $style )
1947                 );
1948                 $query = wfCgiToArray( $query );
1949                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1950
1951                 $ret = $this->link( $title, "$prefix$text$inside", $attribs, $query,
1952                         array( 'known', 'noclasses' ) ) . $trail;
1953
1954                 wfProfileOut( __METHOD__ );
1955                 return $ret;
1956         }
1957
1958         /**
1959          * @deprecated since 1.16 Use link()
1960          *
1961          * Make a red link to the edit page of a given title.
1962          *
1963          * @param $title Title object of the target page
1964          * @param $text  String: Link text
1965          * @param $query String: Optional query part
1966          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
1967          *                      be included in the link text. Other characters will be appended after
1968          *                      the end of the link.
1969          * @param $prefix String: Optional prefix
1970          */
1971         function makeBrokenLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' ) {
1972                 wfProfileIn( __METHOD__ );
1973
1974                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1975                 if ( $text === '' ) {
1976                         $text = $this->linkText( $title );
1977                 }
1978
1979                 $ret = $this->link( $title, "$prefix$text$inside", array(),
1980                         wfCgiToArray( $query ), 'broken' ) . $trail;
1981
1982                 wfProfileOut( __METHOD__ );
1983                 return $ret;
1984         }
1985
1986         /**
1987          * @deprecated since 1.16 Use link()
1988          *
1989          * Make a brown link to a short article.
1990          *
1991          * @param $nt Title object of the target page
1992          * @param $text  String: link text
1993          * @param $query String: optional query part
1994          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1995          *                      be included in the link text. Other characters will be appended after
1996          *                      the end of the link.
1997          * @param $prefix String: Optional prefix
1998          */
1999         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
2000                 return $this->makeColouredLinkObj( $nt, 'stub', $text, $query, $trail, $prefix );
2001         }
2002
2003         /**
2004          * @deprecated since 1.16 Use link()
2005          *
2006          * Make a coloured link.
2007          *
2008          * @param $nt Title object of the target page
2009          * @param $colour Integer: colour of the link
2010          * @param $text   String:  link text
2011          * @param $query  String:  optional query part
2012          * @param $trail  String:  optional trail. Alphabetic characters at the start of this string will
2013          *                      be included in the link text. Other characters will be appended after
2014          *                      the end of the link.
2015          * @param $prefix String: Optional prefix
2016          */
2017         function makeColouredLinkObj( $nt, $colour, $text = '', $query = '', $trail = '', $prefix = '' ) {
2018                 if ( $colour != '' ) {
2019                         $style = $this->getInternalLinkAttributesObj( $nt, $text, $colour );
2020                 } else {
2021                         $style = '';
2022                 }
2023                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
2024         }
2025
2026         /** Obsolete alias */
2027         function makeImage( $url, $alt = '' ) {
2028                 wfDeprecated( __METHOD__ );
2029                 return $this->makeExternalImage( $url, $alt );
2030         }
2031
2032         /**
2033          * Creates the HTML source for images
2034          * @deprecated since 1.16 use makeImageLink2
2035          *
2036          * @param $title Title object
2037          * @param $label String: label text
2038          * @param $alt String: alt text
2039          * @param $align String: horizontal alignment: none, left, center, right)
2040          * @param $handlerParams Array: parameters to be passed to the media handler
2041          * @param $framed Boolean: shows image in original size in a frame
2042          * @param $thumb Boolean: shows image as thumbnail in a frame
2043          * @param $manualthumb String: image name for the manual thumbnail
2044          * @param $valign String: vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
2045          * @param $time String: timestamp of the file, set as false for current
2046          * @return String
2047          */
2048         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(),
2049                 $framed = false, $thumb = false, $manualthumb = '', $valign = '', $time = false )
2050         {
2051                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
2052                 if ( $align ) {
2053                         $frameParams['align'] = $align;
2054                 }
2055                 if ( $framed ) {
2056                         $frameParams['framed'] = true;
2057                 }
2058                 if ( $thumb ) {
2059                         $frameParams['thumbnail'] = true;
2060                 }
2061                 if ( $manualthumb ) {
2062                         $frameParams['manualthumb'] = $manualthumb;
2063                 }
2064                 if ( $valign ) {
2065                         $frameParams['valign'] = $valign;
2066                 }
2067                 $file = wfFindFile( $title, array( 'time' => $time ) );
2068                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams, $time );
2069         }
2070
2071         /** @deprecated use Linker::makeMediaLinkObj() */
2072         function makeMediaLink( $name, $unused = '', $text = '', $time = false ) {
2073                 $nt = Title::makeTitleSafe( NS_FILE, $name );
2074                 return $this->makeMediaLinkObj( $nt, $text, $time );
2075         }
2076
2077         /**
2078          * Returns the attributes for the tooltip and access key.
2079          */
2080         public function tooltipAndAccesskeyAttribs( $name ) {
2081                 global $wgEnableTooltipsAndAccesskeys;
2082                 if ( !$wgEnableTooltipsAndAccesskeys )
2083                         return array();
2084                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
2085                 # no attribute" instead of "output '' as value for attribute", this
2086                 # would be three lines.
2087                 $attribs = array(
2088                         'title' => $this->titleAttrib( $name, 'withaccess' ),
2089                         'accesskey' => $this->accesskey( $name )
2090                 );
2091                 if ( $attribs['title'] === false ) {
2092                         unset( $attribs['title'] );
2093                 }
2094                 if ( $attribs['accesskey'] === false ) {
2095                         unset( $attribs['accesskey'] );
2096                 }
2097                 return $attribs;
2098         }
2099
2100         /**
2101          * @deprecated since 1.14
2102          * Returns raw bits of HTML, use titleAttrib() and accesskey()
2103          */
2104         public function tooltipAndAccesskey( $name ) {
2105                 return Xml::expandAttributes( $this->tooltipAndAccesskeyAttribs( $name ) );
2106         }
2107
2108         /**
2109          * @deprecated since 1.14
2110          * Returns raw bits of HTML, use titleAttrib()
2111          */
2112         public function tooltip( $name, $options = null ) {
2113                 global $wgEnableTooltipsAndAccesskeys;
2114                 if ( !$wgEnableTooltipsAndAccesskeys )
2115                         return '';
2116                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
2117                 # no attribute" instead of "output '' as value for attribute", this
2118                 # would be two lines.
2119                 $tooltip = $this->titleAttrib( $name, $options );
2120                 if ( $tooltip === false ) {
2121                         return '';
2122                 }
2123                 return Xml::expandAttributes( array(
2124                         'title' => $this->titleAttrib( $name, $options )
2125                 ) );
2126         }
2127 }