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