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