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