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          * @param $widthOption: Used by the parser to remember the user preference thumbnailsize
 437          * @return String: HTML for an image, with links, wrappers, etc.
 438          */
 439         function makeImageLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false, $query = "", $widthOption = null ) {
 440                 $res = null;
 441                 if ( !wfRunHooks( 'ImageBeforeProduceHTML', array( &$this, &$title,
 442                 &$file, &$frameParams, &$handlerParams, &$time, &$res ) ) ) {
 443                         return $res;
 444                 }
 445
 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                                 global $wgThumbLimits, $wgThumbUpright;
 473                                 if ( !isset( $widthOption ) || !isset( $wgThumbLimits[$widthOption] ) ) {
 474                                         $widthOption = User::getDefaultOption( 'thumbsize' );
 475                                 }
 476
 477                                 // Reduce width for upright images when parameter 'upright' is used
 478                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 479                                         $fp['upright'] = $wgThumbUpright;
 480                                 }
 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
 486                                 // Use width which is smaller: real image width or user preference width
 487                                 // Unless image is scalable vector.
 488                                 if ( !isset( $hp['height'] ) && ( $hp['width'] <= 0 ||
 489                                                 $prefWidth < $hp['width'] || $file->isVectorized() ) ) {
 490                                         $hp['width'] = $prefWidth;
 491                                 }
 492                         }
 493                 }
 494
 495                 if ( $file && ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) ) {
 496                         global $wgContLang;
 497                         # Create a thumbnail. Alignment depends on language
 498                         # writing direction, # right aligned for left-to-right-
 499                         # languages ("Western languages"), left-aligned
 500                         # for right-to-left-languages ("Semitic languages")
 501                         #
 502                         # If  thumbnail width has not been provided, it is set
 503                         # to the default user option as specified in Language*.php
 504                         if ( $fp['align'] == '' ) {
 505                                 $fp['align'] = $wgContLang->alignEnd();
 506                         }
 507                         return $prefix . $this->makeThumbLink2( $title, $file, $fp, $hp, $time, $query ) . $postfix;
 508                 }
 509
 510                 if ( $file && isset( $fp['frameless'] ) ) {
 511                         $srcWidth = $file->getWidth( $page );
 512                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 513                         # This is the same behaviour as the "thumb" option does it already.
 514                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 515                                 $hp['width'] = $srcWidth;
 516                         }
 517                 }
 518
 519                 if ( $file && isset( $hp['width'] ) ) {
 520                         # Create a resized image, without the additional thumbnail features
 521                         $thumb = $file->transform( $hp );
 522                 } else {
 523                         $thumb = false;
 524                 }
 525
 526                 if ( !$thumb ) {
 527                         $s = $this->makeBrokenImageLinkObj( $title, $fp['title'], '', '', '', $time == true );
 528                 } else {
 529                         $params = array(
 530                                 'alt' => $fp['alt'],
 531                                 'title' => $fp['title'],
 532                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 533                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false );
 534                         $params = $this->getImageLinkMTOParams( $fp, $query ) + $params;
 535
 536                         $s = $thumb->toHtml( $params );
 537                 }
 538                 if ( $fp['align'] != '' ) {
 539                         $s = "<div class=\"float{$fp['align']}\">{$s}</div>";
 540                 }
 541                 return str_replace( "\n", ' ', $prefix . $s . $postfix );
 542         }
 543
 544         /**
 545          * Get the link parameters for MediaTransformOutput::toHtml() from given
 546          * frame parameters supplied by the Parser.
 547          * @param $frameParams The frame parameters
 548          * @param $query An optional query string to add to description page links
 549          */
 550         function getImageLinkMTOParams( $frameParams, $query = '' ) {
 551                 $mtoParams = array();
 552                 if ( isset( $frameParams['link-url'] ) && $frameParams['link-url'] !== '' ) {
 553                         $mtoParams['custom-url-link'] = $frameParams['link-url'];
 554                 } elseif ( isset( $frameParams['link-title'] ) && $frameParams['link-title'] !== '' ) {
 555                         $mtoParams['custom-title-link'] = $frameParams['link-title'];
 556                 } elseif ( !empty( $frameParams['no-link'] ) ) {
 557                         // No link
 558                 } else {
 559                         $mtoParams['desc-link'] = true;
 560                         $mtoParams['desc-query'] = $query;
 561                 }
 562                 return $mtoParams;
 563         }
 564
 565         /**
 566          * Make HTML for a thumbnail including image, border and caption
 567          * @param $title Title object
 568          * @param $file File object or false if it doesn't exist
 569          * @param $label String
 570          * @param $alt String
 571          * @param $align String
 572          * @param $params Array
 573          * @param $framed Boolean
 574          * @param $manualthumb String
 575          */
 576         function makeThumbLinkObj( Title $title, $file, $label = '', $alt, $align = 'right', $params = array(), $framed = false , $manualthumb = "" ) {
 577                 $frameParams = array(
 578                         'alt' => $alt,
 579                         'caption' => $label,
 580                         'align' => $align
 581                 );
 582                 if ( $framed ) $frameParams['framed'] = true;
 583                 if ( $manualthumb ) $frameParams['manualthumb'] = $manualthumb;
 584                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 585         }
 586
 587         function makeThumbLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false, $query = "" ) {
 588                 global $wgStylePath;
 589                 $exists = $file && $file->exists();
 590
 591                 # Shortcuts
 592                 $fp =& $frameParams;
 593                 $hp =& $handlerParams;
 594
 595                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 596                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 597                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 598                 if ( !isset( $fp['title'] ) ) $fp['title'] = '';
 599                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 600
 601                 if ( empty( $hp['width'] ) ) {
 602                         // Reduce width for upright images when parameter 'upright' is used
 603                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 604                 }
 605                 $thumb = false;
 606
 607                 if ( !$exists ) {
 608                         $outerWidth = $hp['width'] + 2;
 609                 } else {
 610                         if ( isset( $fp['manualthumb'] ) ) {
 611                                 # Use manually specified thumbnail
 612                                 $manual_title = Title::makeTitleSafe( NS_FILE, $fp['manualthumb'] );
 613                                 if ( $manual_title ) {
 614                                         $manual_img = wfFindFile( $manual_title );
 615                                         if ( $manual_img ) {
 616                                                 $thumb = $manual_img->getUnscaledThumb( $hp );
 617                                         } else {
 618                                                 $exists = false;
 619                                         }
 620                                 }
 621                         } elseif ( isset( $fp['framed'] ) ) {
 622                                 // Use image dimensions, don't scale
 623                                 $thumb = $file->getUnscaledThumb( $hp );
 624                         } else {
 625                                 # Do not present an image bigger than the source, for bitmap-style images
 626                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 627                                 $srcWidth = $file->getWidth( $page );
 628                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 629                                         $hp['width'] = $srcWidth;
 630                                 }
 631                                 $thumb = $file->transform( $hp );
 632                         }
 633
 634                         if ( $thumb ) {
 635                                 $outerWidth = $thumb->getWidth() + 2;
 636                         } else {
 637                                 $outerWidth = $hp['width'] + 2;
 638                         }
 639                 }
 640
 641                 # ThumbnailImage::toHtml() already adds page= onto the end of DjVu URLs
 642                 # So we don't need to pass it here in $query. However, the URL for the
 643                 # zoom icon still needs it, so we make a unique query for it. See bug 14771
 644                 $url = $title->getLocalURL( $query );
 645                 if ( $page ) {
 646                         $url = wfAppendQuery( $url, 'page=' . urlencode( $page ) );
 647                 }
 648
 649                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 650                 if ( !$exists ) {
 651                         $s .= $this->makeBrokenImageLinkObj( $title, $fp['title'], '', '', '', $time == true );
 652                         $zoomIcon = '';
 653                 } elseif ( !$thumb ) {
 654                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 655                         $zoomIcon = '';
 656                 } else {
 657                         $params = array(
 658                                 'alt' => $fp['alt'],
 659                                 'title' => $fp['title'],
 660                                 'img-class' => 'thumbimage' );
 661                         $params = $this->getImageLinkMTOParams( $fp, $query ) + $params;
 662                         $s .= $thumb->toHtml( $params );
 663                         if ( isset( $fp['framed'] ) ) {
 664                                 $zoomIcon = "";
 665                         } else {
 666                                 $zoomIcon =  '<div class="magnify">' .
 667                                         '<a href="' . htmlspecialchars( $url ) . '" class="internal" ' .
 668                                                 'title="' . htmlspecialchars( wfMsg( 'thumbnail-more' ) ) . '">' .
 669                                         '<img src="' . htmlspecialchars( $wgStylePath ) . '/common/images/magnify-clip.png" ' .
 670                                                 'width="15" height="11" alt="" /></a></div>';
 671                         }
 672                 }
 673                 $s .= '  <div class="thumbcaption">' . $zoomIcon . $fp['caption'] . "</div></div></div>";
 674                 return str_replace( "\n", ' ', $s );
 675         }
 676
 677         /**
 678          * Make a "broken" link to an image
 679          *
 680          * @param $title Title object
 681          * @param $text String: link label
 682          * @param $query String: query string
 683          * @param $trail String: link trail
 684          * @param $prefix String: link prefix
 685          * @param $time Boolean: a file of a certain timestamp was requested
 686          * @return String
 687          */
 688         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '', $time = false ) {
 689                 global $wgEnableUploads, $wgUploadMissingFileUrl;
 690                 if ( $title instanceof Title ) {
 691                         wfProfileIn( __METHOD__ );
 692                         $currentExists = $time ? ( wfFindFile( $title ) != false ) : false;
 693
 694                         list( $inside, $trail ) = self::splitTrail( $trail );
 695                         if ( $text == '' )
 696                                 $text = htmlspecialchars( $title->getPrefixedText() );
 697
 698                         if ( ( $wgUploadMissingFileUrl || $wgEnableUploads ) && !$currentExists ) {
 699                                 $redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
 700
 701                                 if ( $redir ) {
 702                                         wfProfileOut( __METHOD__ );
 703                                         return $this->linkKnown( $title, "$prefix$text$inside", array(), $query ) . $trail;
 704                                 }
 705
 706                                 $href = $this->getUploadUrl( $title, $query );
 707
 708                                 wfProfileOut( __METHOD__ );
 709                                 return '<a href="' . htmlspecialchars( $href ) . '" class="new" title="' .
 710                                                                 htmlspecialchars( $title->getPrefixedText(), ENT_QUOTES ) . '">' .
 711                                                                 htmlspecialchars( $prefix . $text . $inside, ENT_NOQUOTES ) . '</a>' . $trail;
 712                         } else {
 713                                 wfProfileOut( __METHOD__ );
 714                                 return $this->linkKnown( $title, "$prefix$text$inside", array(), $query ) . $trail;
 715                         }
 716                 } else {
 717                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 718                 }
 719         }
 720
 721         /**
 722          * Get the URL to upload a certain file
 723          *
 724          * @param $destFile Title object of the file to upload
 725          * @param $query String: urlencoded query string to prepend
 726          * @return String: urlencoded URL
 727          */
 728         protected function getUploadUrl( $destFile, $query = '' ) {
 729                 global $wgUploadMissingFileUrl;
 730                 $q = 'wpDestFile=' . $destFile->getPartialUrl();
 731                 if ( $query != '' )
 732                         $q .= '&' . $query;
 733
 734                 if ( $wgUploadMissingFileUrl ) {
 735                         return wfAppendQuery( $wgUploadMissingFileUrl, $q );
 736                 } else {
 737                         $upload = SpecialPage::getTitleFor( 'Upload' );
 738                         return $upload->getLocalUrl( $q );
 739                 }
 740         }
 741
 742         /**
 743          * Create a direct link to a given uploaded file.
 744          *
 745          * @param $title Title object.
 746          * @param $text String: pre-sanitized HTML
 747          * @param $time string: time image was created
 748          * @return String: HTML
 749          *
 750          * @todo Handle invalid or missing images better.
 751          */
 752         public function makeMediaLinkObj( $title, $text = '', $time = false ) {
 753                 if ( is_null( $title ) ) {
 754                         # # # HOTFIX. Instead of breaking, return empty string.
 755                         return $text;
 756                 } else {
 757                         $img  = wfFindFile( $title, array( 'time' => $time ) );
 758                         if ( $img ) {
 759                                 $url  = $img->getURL();
 760                                 $class = 'internal';
 761                         } else {
 762                                 $url = $this->getUploadUrl( $title );
 763                                 $class = 'new';
 764                         }
 765                         $alt = htmlspecialchars( $title->getText(),  ENT_QUOTES );
 766                         if ( $text == '' ) {
 767                                 $text = $alt;
 768                         }
 769                         $u = htmlspecialchars( $url );
 770                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 771                 }
 772         }
 773
 774         /**
 775          *  Make a link to a special page given its name and, optionally,
 776          * a message key from the link text.
 777          * Usage example: $skin->specialLink( 'recentchanges' )
 778          */
 779         function specialLink( $name, $key = '' ) {
 780                 if ( $key == '' ) { $key = strtolower( $name ); }
 781
 782                 return $this->linkKnown( SpecialPage::getTitleFor( $name ) , wfMsg( $key ) );
 783         }
 784
 785         /**
 786          * Make an external link
 787          * @param $url String: URL to link to
 788          * @param $text String: text of link
 789          * @param $escape Boolean: do we escape the link text?
 790          * @param $linktype String: type of external link. Gets added to the classes
 791          * @param $attribs Array of extra attributes to <a>
 792          *
 793          * @todo FIXME: This is a really crappy implementation. $linktype and
 794          * 'external' are mashed into the class attrib for the link (which is made
 795          * into a string). Then, if we've got additional params in $attribs, we
 796          * add to it. People using this might want to change the classes (or other
 797          * default link attributes), but passing $attribsText is just messy. Would
 798          * make a lot more sense to make put the classes into $attribs, let the
 799          * hook play with them, *then* expand it all at once.
 800          */
 801         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $attribs = array() ) {
 802                 if ( isset( $attribs['class'] ) ) {
 803                         # yet another hack :(
 804                         $class = $attribs['class'];
 805                 } else {
 806                         $class =  "external $linktype";
 807                 }
 808
 809                 $attribsText = $this->getExternalLinkAttributes( $class );
 810                 $url = htmlspecialchars( $url );
 811                 if ( $escape ) {
 812                         $text = htmlspecialchars( $text );
 813                 }
 814                 $link = '';
 815                 $success = wfRunHooks( 'LinkerMakeExternalLink', array( &$url, &$text, &$link, &$attribs, $linktype ) );
 816                 if ( !$success ) {
 817                         wfDebug( "Hook LinkerMakeExternalLink changed the output of link with url {$url} and text {$text} to {$link}\n", true );
 818                         return $link;
 819                 }
 820                 if ( $attribs ) {
 821                         $attribsText .= Html::expandAttributes( $attribs );
 822                 }
 823                 return '<a href="' . $url . '"' . $attribsText . '>' . $text . '</a>';
 824         }
 825
 826         /**
 827          * Make user link (or user contributions for unregistered users)
 828          * @param $userId   Integer: user id in database.
 829          * @param $userText String: user name in database
 830          * @return String: HTML fragment
 831          * @private
 832          */
 833         function userLink( $userId, $userText ) {
 834                 if ( $userId == 0 ) {
 835                         $page = SpecialPage::getTitleFor( 'Contributions', $userText );
 836                 } else {
 837                         $page = Title::makeTitle( NS_USER, $userText );
 838                 }
 839                 return $this->link( $page, htmlspecialchars( $userText ), array( 'class' => 'mw-userlink' ) );
 840         }
 841
 842         /**
 843          * Generate standard user tool links (talk, contributions, block link, etc.)
 844          *
 845          * @param $userId Integer: user identifier
 846          * @param $userText String: user name or IP address
 847          * @param $redContribsWhenNoEdits Boolean: should the contributions link be
 848          *        red if the user has no edits?
 849          * @param $flags Integer: customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 850          * @param $edits Integer: user edit count (optional, for performance)
 851          * @return String: HTML fragment
 852          */
 853         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits = null ) {
 854                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans, $wgLang;
 855                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 856                 $blockable = ( $wgSysopUserBans || 0 == $userId ) && !$flags & self::TOOL_LINKS_NOBLOCK;
 857
 858                 $items = array();
 859                 if ( $talkable ) {
 860                         $items[] = $this->userTalkLink( $userId, $userText );
 861                 }
 862                 if ( $userId ) {
 863                         // check if the user has an edit
 864                         $attribs = array();
 865                         if ( $redContribsWhenNoEdits ) {
 866                                 $count = !is_null( $edits ) ? $edits : User::edits( $userId );
 867                                 if ( $count == 0 ) {
 868                                         $attribs['class'] = 'new';
 869                                 }
 870                         }
 871                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 872
 873                         $items[] = $this->link( $contribsPage, wfMsgHtml( 'contribslink' ), $attribs );
 874                 }
 875                 if ( $blockable && $wgUser->isAllowed( 'block' ) ) {
 876                         $items[] = $this->blockLink( $userId, $userText );
 877                 }
 878
 879                 if ( $items ) {
 880                         return ' <span class="mw-usertoollinks">(' . $wgLang->pipeList( $items ) . ')</span>';
 881                 } else {
 882                         return '';
 883                 }
 884         }
 885
 886         /**
 887          * Alias for userToolLinks( $userId, $userText, true );
 888          * @param $userId Integer: user identifier
 889          * @param $userText String: user name or IP address
 890          * @param $edits Integer: user edit count (optional, for performance)
 891          */
 892         public function userToolLinksRedContribs( $userId, $userText, $edits = null ) {
 893                 return $this->userToolLinks( $userId, $userText, true, 0, $edits );
 894         }
 895
 896
 897         /**
 898          * @param $userId Integer: user id in database.
 899          * @param $userText String: user name in database.
 900          * @return String: HTML fragment with user talk link
 901          * @private
 902          */
 903         function userTalkLink( $userId, $userText ) {
 904                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 905                 $userTalkLink = $this->link( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 906                 return $userTalkLink;
 907         }
 908
 909         /**
 910          * @param $userId Integer: userid
 911          * @param $userText String: user name in database.
 912          * @return String: HTML fragment with block link
 913          * @private
 914          */
 915         function blockLink( $userId, $userText ) {
 916                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 917                 $blockLink = $this->link( $blockPage, wfMsgHtml( 'blocklink' ) );
 918                 return $blockLink;
 919         }
 920
 921         /**
 922          * Generate a user link if the current user is allowed to view it
 923          * @param $rev Revision object.
 924          * @param $isPublic Boolean: show only if all users can see it
 925          * @return String: HTML fragment
 926          */
 927         function revUserLink( $rev, $isPublic = false ) {
 928                 if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 929                         $link = wfMsgHtml( 'rev-deleted-user' );
 930                 } else if ( $rev->userCan( Revision::DELETED_USER ) ) {
 931                         $link = $this->userLink( $rev->getUser( Revision::FOR_THIS_USER ),
 932                                 $rev->getUserText( Revision::FOR_THIS_USER ) );
 933                 } else {
 934                         $link = wfMsgHtml( 'rev-deleted-user' );
 935                 }
 936                 if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 937                         return '<span class="history-deleted">' . $link . '</span>';
 938                 }
 939                 return $link;
 940         }
 941
 942         /**
 943          * Generate a user tool link cluster if the current user is allowed to view it
 944          * @param $rev Revision object.
 945          * @param $isPublic Boolean: show only if all users can see it
 946          * @return string HTML
 947          */
 948         function revUserTools( $rev, $isPublic = false ) {
 949                 if ( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 950                         $link = wfMsgHtml( 'rev-deleted-user' );
 951                 } else if ( $rev->userCan( Revision::DELETED_USER ) ) {
 952                         $userId = $rev->getUser( Revision::FOR_THIS_USER );
 953                         $userText = $rev->getUserText( Revision::FOR_THIS_USER );
 954                         $link = $this->userLink( $userId, $userText ) .
 955                                 ' ' . $this->userToolLinks( $userId, $userText );
 956                 } else {
 957                         $link = wfMsgHtml( 'rev-deleted-user' );
 958                 }
 959                 if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 960                         return ' <span class="history-deleted">' . $link . '</span>';
 961                 }
 962                 return $link;
 963         }
 964
 965         /**
 966          * This function is called by all recent changes variants, by the page history,
 967          * and by the user contributions list. It is responsible for formatting edit
 968          * comments. It escapes any HTML in the comment, but adds some CSS to format
 969          * auto-generated comments (from section editing) and formats [[wikilinks]].
 970          *
 971          * @author Erik Moeller <moeller@scireview.de>
 972          *
 973          * Note: there's not always a title to pass to this function.
 974          * Since you can't set a default parameter for a reference, I've turned it
 975          * temporarily to a value pass. Should be adjusted further. --brion
 976          *
 977          * @param $comment String
 978          * @param $title Mixed: Title object (to generate link to the section in autocomment) or null
 979          * @param $local Boolean: whether section links should refer to local page
 980          */
 981         function formatComment( $comment, $title = null, $local = false ) {
 982                 wfProfileIn( __METHOD__ );
 983
 984                 # Sanitize text a bit:
 985                 $comment = str_replace( "\n", " ", $comment );
 986                 # Allow HTML entities (for bug 13815)
 987                 $comment = Sanitizer::escapeHtmlAllowEntities( $comment );
 988
 989                 # Render autocomments and make links:
 990                 $comment = $this->formatAutocomments( $comment, $title, $local );
 991                 $comment = $this->formatLinksInComment( $comment, $title, $local );
 992
 993                 wfProfileOut( __METHOD__ );
 994                 return $comment;
 995         }
 996
 997         /**
 998          * The pattern for autogen comments is / * foo * /, which makes for
 999          * some nasty regex.
1000          * We look for all comments, match any text before and after the comment,
1001          * add a separator where needed and format the comment itself with CSS
1002          * Called by Linker::formatComment.
1003          *
1004          * @param $comment String: comment text
1005          * @param $title An optional title object used to links to sections
1006          * @param $local Boolean: whether section links should refer to local page
1007          * @return String: formatted comment
1008          */
1009         private function formatAutocomments( $comment, $title = null, $local = false ) {
1010                 // Bah!
1011                 $this->autocommentTitle = $title;
1012                 $this->autocommentLocal = $local;
1013                 $comment = preg_replace_callback(
1014                         '!(.*)/\*\s*(.*?)\s*\*/(.*)!',
1015                         array( $this, 'formatAutocommentsCallback' ),
1016                         $comment );
1017                 unset( $this->autocommentTitle );
1018                 unset( $this->autocommentLocal );
1019                 return $comment;
1020         }
1021
1022         private function formatAutocommentsCallback( $match ) {
1023                 $title = $this->autocommentTitle;
1024                 $local = $this->autocommentLocal;
1025
1026                 $pre = $match[1];
1027                 $auto = $match[2];
1028                 $post = $match[3];
1029                 $link = '';
1030                 if ( $title ) {
1031                         $section = $auto;
1032
1033                         # Remove links that a user may have manually put in the autosummary
1034                         # This could be improved by copying as much of Parser::stripSectionName as desired.
1035                         $section = str_replace( '[[:', '', $section );
1036                         $section = str_replace( '[[', '', $section );
1037                         $section = str_replace( ']]', '', $section );
1038
1039                         $section = Sanitizer::normalizeSectionNameWhitespace( $section ); # bug 22784
1040                         if ( $local ) {
1041                                 $sectionTitle = Title::newFromText( '#' . $section );
1042                         } else {
1043                                 $sectionTitle = Title::makeTitleSafe( $title->getNamespace(),
1044                                         $title->getDBkey(), $section );
1045                         }
1046                         if ( $sectionTitle ) {
1047                                 $link = $this->link( $sectionTitle,
1048                                         htmlspecialchars( wfMsgForContent( 'sectionlink' ) ), array(), array(),
1049                                         'noclasses' );
1050                         } else {
1051                                 $link = '';
1052                         }
1053                 }
1054                 $auto = "$link$auto";
1055                 if ( $pre ) {
1056                         # written summary $presep autocomment (summary /* section */)
1057                         $auto = wfMsgExt( 'autocomment-prefix', array( 'escapenoentities', 'content' ) ) . $auto;
1058                 }
1059                 if ( $post ) {
1060                         # autocomment $postsep written summary (/* section */ summary)
1061                         $auto .= wfMsgExt( 'colon-separator', array( 'escapenoentities', 'content' ) );
1062                 }
1063                 $auto = '<span class="autocomment">' . $auto . '</span>';
1064                 $comment = $pre . $auto . $post;
1065                 return $comment;
1066         }
1067
1068         /**
1069          * Formats wiki links and media links in text; all other wiki formatting
1070          * is ignored
1071          *
1072          * @todo Fixme: doesn't handle sub-links as in image thumb texts like the main parser
1073          * @param $comment String: text to format links in
1074          * @param $title An optional title object used to links to sections
1075          * @param $local Boolean: whether section links should refer to local page
1076          * @return String
1077          */
1078         public function formatLinksInComment( $comment, $title = null, $local = false ) {
1079                 $this->commentContextTitle = $title;
1080                 $this->commentLocal = $local;
1081                 $html = preg_replace_callback(
1082                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1083                         array( $this, 'formatLinksInCommentCallback' ),
1084                         $comment );
1085                 unset( $this->commentContextTitle );
1086                 unset( $this->commentLocal );
1087                 return $html;
1088         }
1089
1090         protected function formatLinksInCommentCallback( $match ) {
1091                 global $wgContLang;
1092
1093                 $medians = '(?:' . preg_quote( MWNamespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1094                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1095
1096                 $comment = $match[0];
1097
1098                 # fix up urlencoded title texts (copied from Parser::replaceInternalLinks)
1099                 if ( strpos( $match[1], '%' ) !== false ) {
1100                         $match[1] = str_replace( array( '<', '>' ), array( '&lt;', '&gt;' ), urldecode( $match[1] ) );
1101                 }
1102
1103                 # Handle link renaming [[foo|text]] will show link as "text"
1104                 if ( $match[3] != "" ) {
1105                         $text = $match[3];
1106                 } else {
1107                         $text = $match[1];
1108                 }
1109                 $submatch = array();
1110                 $thelink = null;
1111                 if ( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1112                         # Media link; trail not supported.
1113                         $linkRegexp = '/\[\[(.*?)\]\]/';
1114                         $title = Title::makeTitleSafe( NS_FILE, $submatch[1] );
1115                         $thelink = $this->makeMediaLinkObj( $title, $text );
1116                 } else {
1117                         # Other kind of link
1118                         if ( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1119                                 $trail = $submatch[1];
1120                         } else {
1121                                 $trail = "";
1122                         }
1123                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1124                         if ( isset( $match[1][0] ) && $match[1][0] == ':' )
1125                                 $match[1] = substr( $match[1], 1 );
1126                         list( $inside, $trail ) = Linker::splitTrail( $trail );
1127
1128                         $linkText = $text;
1129                         $linkTarget = Linker::normalizeSubpageLink( $this->commentContextTitle,
1130                                 $match[1], $linkText );
1131
1132                         $target = Title::newFromText( $linkTarget );
1133                         if ( $target ) {
1134                                 if ( $target->getText() == '' && $target->getInterwiki() === ''
1135                                         && !$this->commentLocal && $this->commentContextTitle )
1136                                 {
1137                                         $newTarget = clone ( $this->commentContextTitle );
1138                                         $newTarget->setFragment( '#' . $target->getFragment() );
1139                                         $target = $newTarget;
1140                                 }
1141                                 $thelink = $this->link(
1142                                         $target,
1143                                         $linkText . $inside
1144                                 ) . $trail;
1145                         }
1146                 }
1147                 if ( $thelink ) {
1148                         // If the link is still valid, go ahead and replace it in!
1149                         $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1150                 }
1151
1152                 return $comment;
1153         }
1154
1155         static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
1156                 # Valid link forms:
1157                 # Foobar -- normal
1158                 # :Foobar -- override special treatment of prefix (images, language links)
1159                 # /Foobar -- convert to CurrentPage/Foobar
1160                 # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
1161                 # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
1162                 # ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage
1163
1164                 wfProfileIn( __METHOD__ );
1165                 $ret = $target; # default return value is no change
1166
1167                 # Some namespaces don't allow subpages,
1168                 # so only perform processing if subpages are allowed
1169                 if ( $contextTitle && MWNamespace::hasSubpages( $contextTitle->getNamespace() ) ) {
1170                         $hash = strpos( $target, '#' );
1171                         if ( $hash !== false ) {
1172                                 $suffix = substr( $target, $hash );
1173                                 $target = substr( $target, 0, $hash );
1174                         } else {
1175                                 $suffix = '';
1176                         }
1177                         # bug 7425
1178                         $target = trim( $target );
1179                         # Look at the first character
1180                         if ( $target != '' && $target { 0 } === '/' ) {
1181                                 # / at end means we don't want the slash to be shown
1182                                 $m = array();
1183                                 $trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
1184                                 if ( $trailingSlashes ) {
1185                                         $noslash = $target = substr( $target, 1, -strlen( $m[0][0] ) );
1186                                 } else {
1187                                         $noslash = substr( $target, 1 );
1188                                 }
1189
1190                                 $ret = $contextTitle->getPrefixedText() . '/' . trim( $noslash ) . $suffix;
1191                                 if ( $text === '' ) {
1192                                         $text = $target . $suffix;
1193                                 } # this might be changed for ugliness reasons
1194                         } else {
1195                                 # check for .. subpage backlinks
1196                                 $dotdotcount = 0;
1197                                 $nodotdot = $target;
1198                                 while ( strncmp( $nodotdot, "../", 3 ) == 0 ) {
1199                                         ++$dotdotcount;
1200                                         $nodotdot = substr( $nodotdot, 3 );
1201                                 }
1202                                 if ( $dotdotcount > 0 ) {
1203                                         $exploded = explode( '/', $contextTitle->GetPrefixedText() );
1204                                         if ( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
1205                                                 $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
1206                                                 # / at the end means don't show full path
1207                                                 if ( substr( $nodotdot, -1, 1 ) === '/' ) {
1208                                                         $nodotdot = substr( $nodotdot, 0, -1 );
1209                                                         if ( $text === '' ) {
1210                                                                 $text = $nodotdot . $suffix;
1211                                                         }
1212                                                 }
1213                                                 $nodotdot = trim( $nodotdot );
1214                                                 if ( $nodotdot != '' ) {
1215                                                         $ret .= '/' . $nodotdot;
1216                                                 }
1217                                                 $ret .= $suffix;
1218                                         }
1219                                 }
1220                         }
1221                 }
1222
1223                 wfProfileOut( __METHOD__ );
1224                 return $ret;
1225         }
1226
1227         /**
1228          * Wrap a comment in standard punctuation and formatting if
1229          * it's non-empty, otherwise return empty string.
1230          *
1231          * @param $comment String
1232          * @param $title Mixed: Title object (to generate link to section in autocomment) or null
1233          * @param $local Boolean: whether section links should refer to local page
1234          *
1235          * @return string
1236          */
1237         function commentBlock( $comment, $title = null, $local = false ) {
1238                 // '*' used to be the comment inserted by the software way back
1239                 // in antiquity in case none was provided, here for backwards
1240                 // compatability, acc. to brion -ævar
1241                 if ( $comment == '' || $comment == '*' ) {
1242                         return '';
1243                 } else {
1244                         $formatted = $this->formatComment( $comment, $title, $local );
1245                         return " <span class=\"comment\">($formatted)</span>";
1246                 }
1247         }
1248
1249         /**
1250          * Wrap and format the given revision's comment block, if the current
1251          * user is allowed to view it.
1252          *
1253          * @param $rev Revision object
1254          * @param $local Boolean: whether section links should refer to local page
1255          * @param $isPublic Boolean: show only if all users can see it
1256          * @return String: HTML fragment
1257          */
1258         function revComment( Revision $rev, $local = false, $isPublic = false ) {
1259                 if ( $rev->getRawComment() == "" ) return "";
1260                 if ( $rev->isDeleted( Revision::DELETED_COMMENT ) && $isPublic ) {
1261                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1262                 } else if ( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1263                         $block = $this->commentBlock( $rev->getComment( Revision::FOR_THIS_USER ),
1264                                 $rev->getTitle(), $local );
1265                 } else {
1266                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1267                 }
1268                 if ( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1269                         return " <span class=\"history-deleted\">$block</span>";
1270                 }
1271                 return $block;
1272         }
1273
1274         public function formatRevisionSize( $size ) {
1275                 if ( $size == 0 ) {
1276                         $stxt = wfMsgExt( 'historyempty', 'parsemag' );
1277                 } else {
1278                         global $wgLang;
1279                         $stxt = wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $size ) );
1280                         $stxt = "($stxt)";
1281                 }
1282                 $stxt = htmlspecialchars( $stxt );
1283                 return "<span class=\"history-size\">$stxt</span>";
1284         }
1285
1286         /**
1287          * Add another level to the Table of Contents
1288          */
1289         function tocIndent() {
1290                 return "\n<ul>";
1291         }
1292
1293         /**
1294          * Finish one or more sublevels on the Table of Contents
1295          */
1296         function tocUnindent( $level ) {
1297                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level > 0 ? $level : 0 );
1298         }
1299
1300         /**
1301          * parameter level defines if we are on an indentation level
1302          */
1303         function tocLine( $anchor, $tocline, $tocnumber, $level, $sectionIndex = false ) {
1304                 $classes = "toclevel-$level";
1305                 if ( $sectionIndex !== false )
1306                         $classes .= " tocsection-$sectionIndex";
1307                 return "\n<li class=\"$classes\"><a href=\"#" .
1308                         $anchor . '"><span class="tocnumber">' .
1309                         $tocnumber . '</span> <span class="toctext">' .
1310                         $tocline . '</span></a>';
1311         }
1312
1313         /**
1314          * End a Table Of Contents line.
1315          * tocUnindent() will be used instead if we're ending a line below
1316          * the new level.
1317          */
1318         function tocLineEnd() {
1319                 return "</li>\n";
1320         }
1321
1322         /**
1323          * Wraps the TOC in a table and provides the hide/collapse javascript.
1324          *
1325          * @param $toc String: html of the Table Of Contents
1326          * @return String: full html of the TOC
1327          */
1328         function tocList( $toc ) {
1329                 $title = wfMsgHtml( 'toc' ) ;
1330                 return
1331                    '<table id="toc" class="toc"><tr><td>'
1332                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1333                  . $toc
1334                  . "</ul>\n</td></tr></table>\n";
1335         }
1336
1337         /**
1338          * Generate a table of contents from a section tree
1339          * Currently unused.
1340          *
1341          * @param $tree Return value of ParserOutput::getSections()
1342          * @return String: HTML fragment
1343          */
1344         public function generateTOC( $tree ) {
1345                 $toc = '';
1346                 $lastLevel = 0;
1347                 foreach ( $tree as $section ) {
1348                         if ( $section['toclevel'] > $lastLevel )
1349                                 $toc .= $this->tocIndent();
1350                         else if ( $section['toclevel'] < $lastLevel )
1351                                 $toc .= $this->tocUnindent(
1352                                         $lastLevel - $section['toclevel'] );
1353                         else
1354                                 $toc .= $this->tocLineEnd();
1355
1356                         $toc .= $this->tocLine( $section['anchor'],
1357                                 $section['line'], $section['number'],
1358                                 $section['toclevel'], $section['index'] );
1359                         $lastLevel = $section['toclevel'];
1360                 }
1361                 $toc .= $this->tocLineEnd();
1362                 return $this->tocList( $toc );
1363         }
1364
1365         /**
1366          * Create a section edit link.  This supersedes editSectionLink() and
1367          * editSectionLinkForOther().
1368          *
1369          * @param $nt      Title  The title being linked to (may not be the same as
1370          *   $wgTitle, if the section is included from a template)
1371          * @param $section string The designation of the section being pointed to,
1372          *   to be included in the link, like "&section=$section"
1373          * @param $tooltip string The tooltip to use for the link: will be escaped
1374          *   and wrapped in the 'editsectionhint' message
1375          * @param $lang    string Language code
1376          * @return         string HTML to use for edit link
1377          */
1378         public function doEditSectionLink( Title $nt, $section, $tooltip = null, $lang = false ) {
1379                 // HTML generated here should probably have userlangattributes
1380                 // added to it for LTR text on RTL pages
1381                 $attribs = array();
1382                 if ( !is_null( $tooltip ) ) {
1383                         # Bug 25462: undo double-escaping.
1384                         $tooltip = Sanitizer::decodeCharReferences( $tooltip );
1385                         $attribs['title'] = wfMsgReal( 'editsectionhint', array( $tooltip ), true, $lang );
1386                 }
1387                 $link = $this->link( $nt, wfMsgExt( 'editsection', array( 'language' => $lang ) ),
1388                         $attribs,
1389                         array( 'action' => 'edit', 'section' => $section ),
1390                         array( 'noclasses', 'known' )
1391                 );
1392
1393                 # Run the old hook.  This takes up half of the function . . . hopefully
1394                 # we can rid of it someday.
1395                 $attribs = '';
1396                 if ( $tooltip ) {
1397                         $attribs = htmlspecialchars( wfMsgReal( 'editsectionhint', array( $tooltip ), true, $lang ) );
1398                         $attribs = " title=\"$attribs\"";
1399                 }
1400                 $result = null;
1401                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result, $lang ) );
1402                 if ( !is_null( $result ) ) {
1403                         # For reverse compatibility, add the brackets *after* the hook is
1404                         # run, and even add them to hook-provided text.  (This is the main
1405                         # reason that the EditSectionLink hook is deprecated in favor of
1406                         # DoEditSectionLink: it can't change the brackets or the span.)
1407                         $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $result );
1408                         return "<span class=\"editsection\">$result</span>";
1409                 }
1410
1411                 # Add the brackets and the span, and *then* run the nice new hook, with
1412                 # clean and non-redundant arguments.
1413                 $result = wfMsgExt( 'editsection-brackets', array( 'escape', 'replaceafter', 'language' => $lang ), $link );
1414                 $result = "<span class=\"editsection\">$result</span>";
1415
1416                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result, $lang ) );
1417                 return $result;
1418         }
1419
1420         /**
1421          * Create a headline for content
1422          *
1423          * @param $level Integer: the level of the headline (1-6)
1424          * @param $attribs String: any attributes for the headline, starting with
1425          *                 a space and ending with '>'
1426          *                 This *must* be at least '>' for no attribs
1427          * @param $anchor String: the anchor to give the headline (the bit after the #)
1428          * @param $text String: the text of the header
1429          * @param $link String: HTML to add for the section edit link
1430          * @param $legacyAnchor Mixed: a second, optional anchor to give for
1431          *   backward compatibility (false to omit)
1432          *
1433          * @return String: HTML headline
1434          */
1435         public function makeHeadline( $level, $attribs, $anchor, $text, $link, $legacyAnchor = false ) {
1436                 $ret = "<h$level$attribs"
1437                         . $link
1438                         . " <span class=\"mw-headline\" id=\"$anchor\">$text</span>"
1439                         . "</h$level>";
1440                 if ( $legacyAnchor !== false ) {
1441                         $ret = "<div id=\"$legacyAnchor\"></div>$ret";
1442                 }
1443                 return $ret;
1444         }
1445
1446         /**
1447          * Split a link trail, return the "inside" portion and the remainder of the trail
1448          * as a two-element array
1449          */
1450         static function splitTrail( $trail ) {
1451                 static $regex = false;
1452                 if ( $regex === false ) {
1453                         global $wgContLang;
1454                         $regex = $wgContLang->linkTrail();
1455                 }
1456                 $inside = '';
1457                 if ( $trail !== '' ) {
1458                         $m = array();
1459                         if ( preg_match( $regex, $trail, $m ) ) {
1460                                 $inside = $m[1];
1461                                 $trail = $m[2];
1462                         }
1463                 }
1464                 return array( $inside, $trail );
1465         }
1466
1467         /**
1468          * Generate a rollback link for a given revision.  Currently it's the
1469          * caller's responsibility to ensure that the revision is the top one. If
1470          * it's not, of course, the user will get an error message.
1471          *
1472          * If the calling page is called with the parameter &bot=1, all rollback
1473          * links also get that parameter. It causes the edit itself and the rollback
1474          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1475          * changes, so this allows sysops to combat a busy vandal without bothering
1476          * other users.
1477          *
1478          * @param $rev Revision object
1479          */
1480         function generateRollback( $rev ) {
1481                 return '<span class="mw-rollback-link">['
1482                         . $this->buildRollbackLink( $rev )
1483                         . ']</span>';
1484         }
1485
1486         /**
1487          * Build a raw rollback link, useful for collections of "tool" links
1488          *
1489          * @param $rev Revision object
1490          * @return String: HTML fragment
1491          */
1492         public function buildRollbackLink( $rev ) {
1493                 global $wgRequest, $wgUser;
1494                 $title = $rev->getTitle();
1495                 $query = array(
1496                         'action' => 'rollback',
1497                         'from' => $rev->getUserText()
1498                 );
1499                 if ( $wgRequest->getBool( 'bot' ) ) {
1500                         $query['bot'] = '1';
1501                         $query['hidediff'] = '1'; // bug 15999
1502                 }
1503                 $query['token'] = $wgUser->editToken( array( $title->getPrefixedText(),
1504                         $rev->getUserText() ) );
1505                 return $this->link( $title, wfMsgHtml( 'rollbacklink' ),
1506                         array( 'title' => wfMsg( 'tooltip-rollback' ) ),
1507                         $query, array( 'known', 'noclasses' ) );
1508         }
1509
1510         /**
1511          * Returns HTML for the "templates used on this page" list.
1512          *
1513          * @param $templates Array of templates from Article::getUsedTemplate
1514          * or similar
1515          * @param $preview Boolean: whether this is for a preview
1516          * @param $section Boolean: whether this is for a section edit
1517          * @return String: HTML output
1518          */
1519         public function formatTemplates( $templates, $preview = false, $section = false ) {
1520                 wfProfileIn( __METHOD__ );
1521
1522                 $outText = '';
1523                 if ( count( $templates ) > 0 ) {
1524                         # Do a batch existence check
1525                         $batch = new LinkBatch;
1526                         foreach ( $templates as $title ) {
1527                                 $batch->addObj( $title );
1528                         }
1529                         $batch->execute();
1530
1531                         # Construct the HTML
1532                         $outText = '<div class="mw-templatesUsedExplanation">';
1533                         if ( $preview ) {
1534                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ), count( $templates ) );
1535                         } elseif ( $section ) {
1536                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ), count( $templates ) );
1537                         } else {
1538                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ), count( $templates ) );
1539                         }
1540                         $outText .= "</div><ul>\n";
1541
1542                         usort( $templates, array( 'Title', 'compare' ) );
1543                         foreach ( $templates as $titleObj ) {
1544                                 $r = $titleObj->getRestrictions( 'edit' );
1545                                 if ( in_array( 'sysop', $r ) ) {
1546                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1547                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1548                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1549                                 } else {
1550                                         $protected = '';
1551                                 }
1552                                 if ( $titleObj->quickUserCan( 'edit' ) ) {
1553                                         $editLink = $this->link(
1554                                                 $titleObj,
1555                                                 wfMsg( 'editlink' ),
1556                                                 array(),
1557                                                 array( 'action' => 'edit' )
1558                                         );
1559                                 } else {
1560                                         $editLink = $this->link(
1561                                                 $titleObj,
1562                                                 wfMsg( 'viewsourcelink' ),
1563                                                 array(),
1564                                                 array( 'action' => 'edit' )
1565                                         );
1566                                 }
1567                                 $outText .= '<li>' . $this->link( $titleObj ) . ' (' . $editLink . ') ' . $protected . '</li>';
1568                         }
1569                         $outText .= '</ul>';
1570                 }
1571                 wfProfileOut( __METHOD__  );
1572                 return $outText;
1573         }
1574
1575         /**
1576          * Returns HTML for the "hidden categories on this page" list.
1577          *
1578          * @param $hiddencats Array of hidden categories from Article::getHiddenCategories
1579          * or similar
1580          * @return String: HTML output
1581          */
1582         public function formatHiddenCategories( $hiddencats ) {
1583                 global $wgLang;
1584                 wfProfileIn( __METHOD__ );
1585
1586                 $outText = '';
1587                 if ( count( $hiddencats ) > 0 ) {
1588                         # Construct the HTML
1589                         $outText = '<div class="mw-hiddenCategoriesExplanation">';
1590                         $outText .= wfMsgExt( 'hiddencategories', array( 'parse' ), $wgLang->formatnum( count( $hiddencats ) ) );
1591                         $outText .= "</div><ul>\n";
1592
1593                         foreach ( $hiddencats as $titleObj ) {
1594                                 $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
1595                         }
1596                         $outText .= '</ul>';
1597                 }
1598                 wfProfileOut( __METHOD__  );
1599                 return $outText;
1600         }
1601
1602         /**
1603          * Format a size in bytes for output, using an appropriate
1604          * unit (B, KB, MB or GB) according to the magnitude in question
1605          *
1606          * @param $size Size to format
1607          * @return String
1608          */
1609         public function formatSize( $size ) {
1610                 global $wgLang;
1611                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1612         }
1613
1614         /**
1615          * Given the id of an interface element, constructs the appropriate title
1616          * attribute from the system messages.  (Note, this is usually the id but
1617          * isn't always, because sometimes the accesskey needs to go on a different
1618          * element than the id, for reverse-compatibility, etc.)
1619          *
1620          * @param $name String: id of the element, minus prefixes.
1621          * @param $options Mixed: null or the string 'withaccess' to add an access-
1622          *   key hint
1623          * @return String: contents of the title attribute (which you must HTML-
1624          *   escape), or false for no title attribute
1625          */
1626         public function titleAttrib( $name, $options = null ) {
1627                 wfProfileIn( __METHOD__ );
1628
1629                 if ( wfEmptyMsg( "tooltip-$name" ) ) {
1630                         $tooltip = false;
1631                 } else {
1632                         $tooltip = wfMsg( "tooltip-$name" );
1633                         # Compatibility: formerly some tooltips had [alt-.] hardcoded
1634                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1635                         # Message equal to '-' means suppress it.
1636                         if (  $tooltip == '-' ) {
1637                                 $tooltip = false;
1638                         }
1639                 }
1640
1641                 if ( $options == 'withaccess' ) {
1642                         $accesskey = $this->accesskey( $name );
1643                         if ( $accesskey !== false ) {
1644                                 if ( $tooltip === false || $tooltip === '' ) {
1645                                         $tooltip = "[$accesskey]";
1646                                 } else {
1647                                         $tooltip .= " [$accesskey]";
1648                                 }
1649                         }
1650                 }
1651
1652                 wfProfileOut( __METHOD__ );
1653                 return $tooltip;
1654         }
1655
1656         /**
1657          * Given the id of an interface element, constructs the appropriate
1658          * accesskey attribute from the system messages.  (Note, this is usually
1659          * the id but isn't always, because sometimes the accesskey needs to go on
1660          * a different element than the id, for reverse-compatibility, etc.)
1661          *
1662          * @param $name String: id of the element, minus prefixes.
1663          * @return String: contents of the accesskey attribute (which you must HTML-
1664          *   escape), or false for no accesskey attribute
1665          */
1666         public function accesskey( $name ) {
1667                 wfProfileIn( __METHOD__ );
1668
1669                 if ( wfEmptyMsg( "accesskey-$name" ) ) {
1670                         $accesskey = false;
1671                 } else {
1672                         $accesskey = wfMsg( "accesskey-$name" );
1673                         if ( $accesskey === '' || $accesskey === '-' ) {
1674                                 # FIXME: Per standard MW behavior, a value of '-' means to suppress the
1675                                 # attribute, but this is broken for accesskey: that might be a useful
1676                                 # value.
1677                                 $accesskey = false;
1678                         }
1679                 }
1680
1681                 wfProfileOut( __METHOD__ );
1682                 return $accesskey;
1683         }
1684
1685         /**
1686          * Creates a (show/hide) link for deleting revisions/log entries
1687          *
1688          * @param $query Array: query parameters to be passed to link()
1689          * @param $restricted Boolean: set to true to use a <strong> instead of a <span>
1690          * @param $delete Boolean: set to true to use (show/hide) rather than (show)
1691          *
1692          * @return String: HTML <a> link to Special:Revisiondelete, wrapped in a
1693          * span to allow for customization of appearance with CSS
1694          */
1695         public function revDeleteLink( $query = array(), $restricted = false, $delete = true ) {
1696                 $sp = SpecialPage::getTitleFor( 'Revisiondelete' );
1697                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1698                 $tag = $restricted ? 'strong' : 'span';
1699                 $link = $this->link( $sp, $text, array(), $query, array( 'known', 'noclasses' ) );
1700                 return Xml::tags( $tag, array( 'class' => 'mw-revdelundel-link' ), "($link)" );
1701         }
1702
1703         /**
1704          * Creates a dead (show/hide) link for deleting revisions/log entries
1705          *
1706          * @param $delete Boolean: set to true to use (show/hide) rather than (show)
1707          *
1708          * @return string HTML text wrapped in a span to allow for customization
1709          * of appearance with CSS
1710          */
1711         public function revDeleteLinkDisabled( $delete = true ) {
1712                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1713                 return Xml::tags( 'span', array( 'class' => 'mw-revdelundel-link' ), "($text)" );
1714         }
1715
1716         /* Deprecated methods */
1717
1718         /**
1719          * @deprecated
1720          */
1721         function postParseLinkColour( $s = null ) {
1722                 wfDeprecated( __METHOD__ );
1723                 return null;
1724         }
1725
1726
1727         /**
1728          * @deprecated Use link()
1729          *
1730          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
1731          * it if you already have a title object handy. See makeLinkObj for further documentation.
1732          *
1733          * @param $title String: the text of the title
1734          * @param $text  String: link text
1735          * @param $query String: optional query part
1736          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1737          *                      be included in the link text. Other characters will be appended after
1738          *                      the end of the link.
1739          */
1740         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
1741                 wfProfileIn( __METHOD__ );
1742                 $nt = Title::newFromText( $title );
1743                 if ( $nt instanceof Title ) {
1744                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
1745                 } else {
1746                         wfDebug( 'Invalid title passed to Linker::makeLink(): "' . $title . "\"\n" );
1747                         $result = $text == "" ? $title : $text;
1748                 }
1749
1750                 wfProfileOut( __METHOD__ );
1751                 return $result;
1752         }
1753
1754         /**
1755          * @deprecated Use link()
1756          *
1757          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
1758          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
1759          *
1760          * @param $title String: the text of the title
1761          * @param $text  String: link text
1762          * @param $query String: optional query part
1763          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1764          *                      be included in the link text. Other characters will be appended after
1765          *                      the end of the link.
1766          * @param $prefix String: Optional prefix
1767          * @param $aprops String: extra attributes to the a-element
1768          */
1769         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '', $aprops = '' ) {
1770                 $nt = Title::newFromText( $title );
1771                 if ( $nt instanceof Title ) {
1772                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
1773                 } else {
1774                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "' . $title . "\"\n" );
1775                         return $text == '' ? $title : $text;
1776                 }
1777         }
1778
1779         /**
1780          * @deprecated Use link()
1781          *
1782          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
1783          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
1784          *
1785          * @param $title String: The text of the title
1786          * @param $text String: Link text
1787          * @param $query String: Optional query part
1788          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
1789          *               be included in the link text. Other characters will be appended after
1790          *               the end of the link.
1791          */
1792         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
1793                 $nt = Title::newFromText( $title );
1794                 if ( $nt instanceof Title ) {
1795                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
1796                 } else {
1797                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "' . $title . "\"\n" );
1798                         return $text == '' ? $title : $text;
1799                 }
1800         }
1801
1802         /**
1803          * @deprecated Use link()
1804          *
1805          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
1806          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
1807          *
1808          * @param $title String: the text of the title
1809          * @param $text  String: link text
1810          * @param $query String: optional query part
1811          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1812          *                      be included in the link text. Other characters will be appended after
1813          *                      the end of the link.
1814          */
1815         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
1816                 wfDeprecated( __METHOD__ );
1817                 $nt = Title::newFromText( $title );
1818                 if ( $nt instanceof Title ) {
1819                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
1820                 } else {
1821                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "' . $title . "\"\n" );
1822                         return $text == '' ? $title : $text;
1823                 }
1824         }
1825
1826         /**
1827          * @deprecated Use link()
1828          *
1829          * Make a link for a title which may or may not be in the database. If you need to
1830          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
1831          * call to this will result in a DB query.
1832          *
1833          * @param $nt     Title: the title object to make the link from, e.g. from
1834          *                      Title::newFromText.
1835          * @param $text  String: link text
1836          * @param $query String: optional query part
1837          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1838          *                      be included in the link text. Other characters will be appended after
1839          *                      the end of the link.
1840          * @param $prefix String: optional prefix. As trail, only before instead of after.
1841          */
1842         function makeLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
1843                 wfProfileIn( __METHOD__ );
1844
1845                 $query = wfCgiToArray( $query );
1846                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1847                 if ( $text === '' ) {
1848                         $text = $this->linkText( $nt );
1849                 }
1850
1851                 $ret = $this->link( $nt, "$prefix$text$inside", array(), $query ) . $trail;
1852
1853                 wfProfileOut( __METHOD__ );
1854                 return $ret;
1855         }
1856
1857         /**
1858          * @deprecated Use link()
1859          *
1860          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
1861          * it doesn't have to do a database query. It's also valid for interwiki titles and special
1862          * pages.
1863          *
1864          * @param $title  Title object of target page
1865          * @param $text   String: text to replace the title
1866          * @param $query  String: link target
1867          * @param $trail  String: text after link
1868          * @param $prefix String: text before link text
1869          * @param $aprops String: extra attributes to the a-element
1870          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
1871          * @return the a-element
1872          */
1873         function makeKnownLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
1874                 wfProfileIn( __METHOD__ );
1875
1876                 if ( $text == '' ) {
1877                         $text = $this->linkText( $title );
1878                 }
1879                 $attribs = Sanitizer::mergeAttributes(
1880                         Sanitizer::decodeTagAttributes( $aprops ),
1881                         Sanitizer::decodeTagAttributes( $style )
1882                 );
1883                 $query = wfCgiToArray( $query );
1884                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1885
1886                 $ret = $this->link( $title, "$prefix$text$inside", $attribs, $query,
1887                         array( 'known', 'noclasses' ) ) . $trail;
1888
1889                 wfProfileOut( __METHOD__ );
1890                 return $ret;
1891         }
1892
1893         /**
1894          * @deprecated Use link()
1895          *
1896          * Make a red link to the edit page of a given title.
1897          *
1898          * @param $title Title object of the target page
1899          * @param $text  String: Link text
1900          * @param $query String: Optional query part
1901          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
1902          *                      be included in the link text. Other characters will be appended after
1903          *                      the end of the link.
1904          * @param $prefix String: Optional prefix
1905          */
1906         function makeBrokenLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' ) {
1907                 wfProfileIn( __METHOD__ );
1908
1909                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1910                 if ( $text === '' ) {
1911                         $text = $this->linkText( $title );
1912                 }
1913
1914                 $ret = $this->link( $title, "$prefix$text$inside", array(),
1915                         wfCgiToArray( $query ), 'broken' ) . $trail;
1916
1917                 wfProfileOut( __METHOD__ );
1918                 return $ret;
1919         }
1920
1921         /**
1922          * @deprecated Use link()
1923          *
1924          * Make a brown link to a short article.
1925          *
1926          * @param $nt Title object of the target page
1927          * @param $text  String: link text
1928          * @param $query String: optional query part
1929          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1930          *                      be included in the link text. Other characters will be appended after
1931          *                      the end of the link.
1932          * @param $prefix String: Optional prefix
1933          */
1934         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
1935                 // wfDeprecated( __METHOD__ );
1936                 return $this->makeColouredLinkObj( $nt, 'stub', $text, $query, $trail, $prefix );
1937         }
1938
1939         /**
1940          * @deprecated Use link()
1941          *
1942          * Make a coloured link.
1943          *
1944          * @param $nt Title object of the target page
1945          * @param $colour Integer: colour of the link
1946          * @param $text   String:  link text
1947          * @param $query  String:  optional query part
1948          * @param $trail  String:  optional trail. Alphabetic characters at the start of this string will
1949          *                      be included in the link text. Other characters will be appended after
1950          *                      the end of the link.
1951          * @param $prefix String: Optional prefix
1952          */
1953         function makeColouredLinkObj( $nt, $colour, $text = '', $query = '', $trail = '', $prefix = '' ) {
1954                 // wfDeprecated( __METHOD__ );
1955                 if ( $colour != '' ) {
1956                         $style = $this->getInternalLinkAttributesObj( $nt, $text, $colour );
1957                 } else $style = '';
1958                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
1959         }
1960
1961         /** Obsolete alias */
1962         function makeImage( $url, $alt = '' ) {
1963                 wfDeprecated( __METHOD__ );
1964                 return $this->makeExternalImage( $url, $alt );
1965         }
1966
1967         /**
1968          * Creates the HTML source for images
1969          * @deprecated use makeImageLink2
1970          *
1971          * @param $title Title object
1972          * @param $label String: label text
1973          * @param $alt String: alt text
1974          * @param $align String: horizontal alignment: none, left, center, right)
1975          * @param $handlerParams Array: parameters to be passed to the media handler
1976          * @param $framed Boolean: shows image in original size in a frame
1977          * @param $thumb Boolean: shows image as thumbnail in a frame
1978          * @param $manualthumb String: image name for the manual thumbnail
1979          * @param $valign String: vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
1980          * @param $time String: timestamp of the file, set as false for current
1981          * @return String
1982          */
1983         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(), $framed = false,
1984           $thumb = false, $manualthumb = '', $valign = '', $time = false )
1985         {
1986                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
1987                 if ( $align ) {
1988                         $frameParams['align'] = $align;
1989                 }
1990                 if ( $framed ) {
1991                         $frameParams['framed'] = true;
1992                 }
1993                 if ( $thumb ) {
1994                         $frameParams['thumbnail'] = true;
1995                 }
1996                 if ( $manualthumb ) {
1997                         $frameParams['manualthumb'] = $manualthumb;
1998                 }
1999                 if ( $valign ) {
2000                         $frameParams['valign'] = $valign;
2001                 }
2002                 $file = wfFindFile( $title, array( 'time' => $time ) );
2003                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams, $time );
2004         }
2005
2006         /** @deprecated use Linker::makeMediaLinkObj() */
2007         function makeMediaLink( $name, $unused = '', $text = '', $time = false ) {
2008                 $nt = Title::makeTitleSafe( NS_FILE, $name );
2009                 return $this->makeMediaLinkObj( $nt, $text, $time );
2010         }
2011
2012         /**
2013          * Used to generate section edit links that point to "other" pages
2014          * (sections that are really part of included pages).
2015          *
2016          * @deprecated use Linker::doEditSectionLink()
2017          * @param $title Title string.
2018          * @param $section Integer: section number.
2019          */
2020         public function editSectionLinkForOther( $title, $section ) {
2021                 wfDeprecated( __METHOD__ );
2022                 $title = Title::newFromText( $title );
2023                 return $this->doEditSectionLink( $title, $section );
2024         }
2025
2026         /**
2027          * @deprecated use Linker::doEditSectionLink()
2028          * @param $nt Title object.
2029          * @param $section Integer: section number.
2030          * @param $hint Link String: title, or default if omitted or empty
2031          */
2032         public function editSectionLink( Title $nt, $section, $hint = '' ) {
2033                 wfDeprecated( __METHOD__ );
2034                 if ( $hint === '' ) {
2035                         # No way to pass an actual empty $hint here!  The new interface al-
2036                         # lows this, so we have to do this for compatibility.
2037                         $hint = null;
2038                 }
2039                 return $this->doEditSectionLink( $nt, $section, $hint );
2040         }
2041
2042         /**
2043          * Returns the attributes for the tooltip and access key.
2044          */
2045         public function tooltipAndAccesskeyAttribs( $name ) {
2046                 global $wgEnableTooltipsAndAccesskeys;
2047                 if ( !$wgEnableTooltipsAndAccesskeys )
2048                         return array();
2049                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
2050                 # no attribute" instead of "output '' as value for attribute", this
2051                 # would be three lines.
2052                 $attribs = array(
2053                         'title' => $this->titleAttrib( $name, 'withaccess' ),
2054                         'accesskey' => $this->accesskey( $name )
2055                 );
2056                 if ( $attribs['title'] === false ) {
2057                         unset( $attribs['title'] );
2058                 }
2059                 if ( $attribs['accesskey'] === false ) {
2060                         unset( $attribs['accesskey'] );
2061                 }
2062                 return $attribs;
2063         }
2064         /**
2065          * @deprecated Returns raw bits of HTML, use titleAttrib() and accesskey()
2066          */
2067         public function tooltipAndAccesskey( $name ) {
2068                 return Xml::expandAttributes( $this->tooltipAndAccesskeyAttribs( $name ) );
2069         }
2070
2071         /** @deprecated Returns raw bits of HTML, use titleAttrib() */
2072         public function tooltip( $name, $options = null ) {
2073                 global $wgEnableTooltipsAndAccesskeys;
2074                 if ( !$wgEnableTooltipsAndAccesskeys )
2075                         return '';
2076                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
2077                 # no attribute" instead of "output '' as value for attribute", this
2078                 # would be two lines.
2079                 $tooltip = $this->titleAttrib( $name, $options );
2080                 if ( $tooltip === false ) {
2081                         return '';
2082                 }
2083                 return Xml::expandAttributes( array(
2084                         'title' => $this->titleAttrib( $name, $options )
2085                 ) );
2086         }
2087 }