includes/Linker.php

   1 <?php
   2 /**
   3  * Split off some of the internal bits from Skin.php. These functions are used
   4  * for primarily page content: links, embedded images, table of contents. Links
   5  * are also used in the skin. For the moment, Skin is a descendent class of
   6  * Linker.  In the future, it should probably be further split so that every
   7  * other bit of the wiki doesn't have to go loading up Skin to get at it.
   8  *
   9  * @ingroup Skins
  10  */
  11 class Linker {
  12
  13         /**
  14          * Flags for userToolLinks()
  15          */
  16         const TOOL_LINKS_NOBLOCK = 1;
  17
  18         function __construct() {}
  19
  20         /**
  21          * Get the appropriate HTML attributes to add to the "a" element of an ex-
  22          * ternal link, as created by [wikisyntax].
  23          *
  24          * @param string $class  The contents of the class attribute; if an empty
  25          *   string is passed, which is the default value, defaults to 'external'.
  26          */
  27         function getExternalLinkAttributes( $class = 'external' ) {
  28                 return $this->getLinkAttributesInternal( '', $class );
  29         }
  30
  31         /**
  32          * Get the appropriate HTML attributes to add to the "a" element of an in-
  33          * terwiki link.
  34          *
  35          * @param string $title  The title text for the link, URL-encoded (???) but
  36          *   not HTML-escaped
  37          * @param string $unused Unused
  38          * @param string $class  The contents of the class attribute; if an empty
  39          *   string is passed, which is the default value, defaults to 'external'.
  40          */
  41         function getInterwikiLinkAttributes( $title, $unused = null, $class = 'external' ) {
  42                 global $wgContLang;
  43
  44                 # FIXME: We have a whole bunch of handling here that doesn't happen in
  45                 # getExternalLinkAttributes, why?
  46                 $title = urldecode( $title );
  47                 $title = $wgContLang->checkTitleEncoding( $title );
  48                 $title = preg_replace( '/[\\x00-\\x1f]/', ' ', $title );
  49
  50                 return $this->getLinkAttributesInternal( $title, $class );
  51         }
  52
  53         /**
  54          * Get the appropriate HTML attributes to add to the "a" element of an in-
  55          * ternal link.
  56          *
  57          * @param string $title  The title text for the link, URL-encoded (???) but
  58          *   not HTML-escaped
  59          * @param string $unused Unused
  60          * @param string $class  The contents of the class attribute, default none
  61          */
  62         function getInternalLinkAttributes( $title, $unused = null, $class='' ) {
  63                 $title = urldecode( $title );
  64                 $title = str_replace( '_', ' ', $title );
  65                 return $this->getLinkAttributesInternal( $title, $class );
  66         }
  67
  68         /**
  69          * Get the appropriate HTML attributes to add to the "a" element of an in-
  70          * ternal link, given the Title object for the page we want to link to.
  71          *
  72          * @param Title  $nt     The Title object
  73          * @param string $unused Unused
  74          * @param string $class  The contents of the class attribute, default none
  75          * @param mixed  $title  Optional (unescaped) string to use in the title
  76          *   attribute; if false, default to the name of the page we're linking to
  77          */
  78         function getInternalLinkAttributesObj( $nt, $unused = null, $class = '', $title = false ) {
  79                 if( $title === false ) {
  80                         $title = $nt->getPrefixedText();
  81                 }
  82                 return $this->getLinkAttributesInternal( $title, $class );
  83         }
  84
  85         /**
  86          * Common code for getLinkAttributesX functions
  87          */
  88         private function getLinkAttributesInternal( $title, $class ) {
  89                 $title = htmlspecialchars( $title );
  90                 $class = htmlspecialchars( $class );
  91                 $r = '';
  92                 if ( $class != '' ) {
  93                         $r .= " class=\"$class\"";
  94                 }
  95                 if ( $title != '') {
  96                         $r .= " title=\"$title\"";
  97                 }
  98                 return $r;
  99         }
 100
 101         /**
 102          * Return the CSS colour of a known link
 103          *
 104          * @param Title $t
 105          * @param integer $threshold user defined threshold
 106          * @return string CSS class
 107          */
 108         function getLinkColour( $t, $threshold ) {
 109                 $colour = '';
 110                 if ( $t->isRedirect() ) {
 111                         # Page is a redirect
 112                         $colour = 'mw-redirect';
 113                 } elseif ( $threshold > 0 &&
 114                            $t->exists() && $t->getLength() < $threshold &&
 115                            MWNamespace::isContent( $t->getNamespace() ) ) {
 116                         # Page is a stub
 117                         $colour = 'stub';
 118                 }
 119                 return $colour;
 120         }
 121
 122         /**
 123          * This function returns an HTML link to the given target.  It serves a few
 124          * purposes:
 125          *   1) If $target is a Title, the correct URL to link to will be figured
 126          *      out automatically.
 127          *   2) It automatically adds the usual classes for various types of link
 128          *      targets: "new" for red links, "stub" for short articles, etc.
 129          *   3) It escapes all attribute values safely so there's no risk of XSS.
 130          *   4) It provides a default tooltip if the target is a Title (the page
 131          *      name of the target).
 132          * link() replaces the old functions in the makeLink() family.
 133          *
 134          * @param $target        Title  Can currently only be a Title, but this may
 135          *   change to support Images, literal URLs, etc.
 136          * @param $text          string The HTML contents of the <a> element, i.e.,
 137          *   the link text.  This is raw HTML and will not be escaped.  If null,
 138          *   defaults to the prefixed text of the Title; or if the Title is just a
 139          *   fragment, the contents of the fragment.
 140          * @param $customAttribs array  A key => value array of extra HTML attri-
 141          *   butes, such as title and class.  (href is ignored.)  Classes will be
 142          *   merged with the default classes, while other attributes will replace
 143          *   default attributes.  All passed attribute values will be HTML-escaped.
 144          *   A false attribute value means to suppress that attribute.
 145          * @param $query         array  The query string to append to the URL
 146          *   you're linking to, in key => value array form.  Query keys and values
 147          *   will be URL-encoded.
 148          * @param $options       mixed  String or array of strings:
 149          *     'known': Page is known to exist, so don't check if it does.
 150          *     'broken': Page is known not to exist, so don't check if it does.
 151          *     'noclasses': Don't add any classes automatically (includes "new",
 152          *       "stub", "mw-redirect", "extiw").  Only use the class attribute
 153          *       provided, if any, so you get a simple blue link with no funny i-
 154          *       cons.
 155          *     'forcearticlepath': Use the article path always, even with a querystring.
 156          *       Has compatibility issues on some setups, so avoid wherever possible.
 157          * @return string HTML <a> attribute
 158          */
 159         public function link( $target, $text = null, $customAttribs = array(), $query = array(), $options = array() ) {
 160                 wfProfileIn( __METHOD__ );
 161                 if( !$target instanceof Title ) {
 162                         return "<!-- ERROR -->$text";
 163                 }
 164                 $options = (array)$options;
 165
 166                 $ret = null;
 167                 if( !wfRunHooks( 'LinkBegin', array( $this, $target, &$text,
 168                 &$customAttribs, &$query, &$options, &$ret ) ) ) {
 169                         wfProfileOut( __METHOD__ );
 170                         return $ret;
 171                 }
 172
 173                 # Normalize the Title if it's a special page
 174                 $target = $this->normaliseSpecialPage( $target );
 175
 176                 # If we don't know whether the page exists, let's find out.
 177                 wfProfileIn( __METHOD__ . '-checkPageExistence' );
 178                 if( !in_array( 'known', $options ) and !in_array( 'broken', $options ) ) {
 179                         if( $target->isKnown() ) {
 180                                 $options []= 'known';
 181                         } else {
 182                                 $options []= 'broken';
 183                         }
 184                 }
 185                 wfProfileOut( __METHOD__ . '-checkPageExistence' );
 186
 187                 $oldquery = array();
 188                 if( in_array( "forcearticlepath", $options ) && $query ){
 189                         $oldquery = $query;
 190                         $query = array();
 191                 }
 192
 193                 # Note: we want the href attribute first, for prettiness.
 194                 $attribs = array( 'href' => $this->linkUrl( $target, $query, $options ) );
 195                 if( in_array( 'forcearticlepath', $options ) && $oldquery ){
 196                         $attribs['href'] = wfAppendQuery( $attribs['href'], wfArrayToCgi( $oldquery ) );
 197                 }
 198
 199                 $attribs = array_merge(
 200                         $attribs,
 201                         $this->linkAttribs( $target, $customAttribs, $options )
 202                 );
 203                 if( is_null( $text ) ) {
 204                         $text = $this->linkText( $target );
 205                 }
 206
 207                 $ret = null;
 208                 if( wfRunHooks( 'LinkEnd', array( $this, $target, $options, &$text, &$attribs, &$ret ) ) ) {
 209                         $ret = Html::rawElement( 'a', $attribs, $text );
 210                 }
 211
 212                 wfProfileOut( __METHOD__ );
 213                 return $ret;
 214         }
 215
 216         /**
 217          * Identical to link(), except $options defaults to 'known'.
 218          */
 219         public function linkKnown( $target, $text = null, $customAttribs = array(), $query = array(), $options = array('known','noclasses') ) {
 220                 return $this->link( $target, $text, $customAttribs, $query, $options );
 221         }
 222
 223         /**
 224          * Returns the Url used to link to a Title
 225          */
 226         private function linkUrl( $target, $query, $options ) {
 227                 wfProfileIn( __METHOD__ );
 228                 # We don't want to include fragments for broken links, because they
 229                 # generally make no sense.
 230                 if( in_array( 'broken', $options ) and $target->mFragment !== '' ) {
 231                         $target = clone $target;
 232                         $target->mFragment = '';
 233                 }
 234
 235                 # If it's a broken link, add the appropriate query pieces, unless
 236                 # there's already an action specified, or unless 'edit' makes no sense
 237                 # (i.e., for a nonexistent special page).
 238                 if( in_array( 'broken', $options ) and empty( $query['action'] )
 239                 and $target->getNamespace() != NS_SPECIAL ) {
 240                         $query['action'] = 'edit';
 241                         $query['redlink'] = '1';
 242                 }
 243                 $ret = $target->getLinkUrl( $query );
 244                 wfProfileOut( __METHOD__ );
 245                 return $ret;
 246         }
 247
 248         /**
 249          * Returns the array of attributes used when linking to the Title $target
 250          */
 251         private function linkAttribs( $target, $attribs, $options ) {
 252                 wfProfileIn( __METHOD__ );
 253                 global $wgUser;
 254                 $defaults = array();
 255
 256                 if( !in_array( 'noclasses', $options ) ) {
 257                         wfProfileIn( __METHOD__ . '-getClasses' );
 258                         # Now build the classes.
 259                         $classes = array();
 260
 261                         if( in_array( 'broken', $options ) ) {
 262                                 $classes[] = 'new';
 263                         }
 264
 265                         if( $target->isExternal() ) {
 266                                 $classes[] = 'extiw';
 267                         }
 268
 269                         # Note that redirects never count as stubs here.
 270                         if ( !in_array( 'broken', $options ) && $target->isRedirect() ) {
 271                                 $classes[] = 'mw-redirect';
 272                         } elseif( $target->isContentPage() ) {
 273                                 # Check for stub.
 274                                 $threshold = $wgUser->getOption( 'stubthreshold' );
 275                                 if( $threshold > 0 and $target->exists() and $target->getLength() < $threshold ) {
 276                                         $classes[] = 'stub';
 277                                 }
 278                         }
 279                         if( $classes != array() ) {
 280                                 $defaults['class'] = implode( ' ', $classes );
 281                         }
 282                         wfProfileOut( __METHOD__ . '-getClasses' );
 283                 }
 284
 285                 # Get a default title attribute.
 286                 if( $target->getPrefixedText() == '' ) {
 287                         # A link like [[#Foo]].  This used to mean an empty title
 288                         # attribute, but that's silly.  Just don't output a title.
 289                 } elseif( in_array( 'known', $options ) ) {
 290                         $defaults['title'] = $target->getPrefixedText();
 291                 } else {
 292                         $defaults['title'] = wfMsg( 'red-link-title', $target->getPrefixedText() );
 293                 }
 294
 295                 # Finally, merge the custom attribs with the default ones, and iterate
 296                 # over that, deleting all "false" attributes.
 297                 $ret = array();
 298                 $merged = Sanitizer::mergeAttributes( $defaults, $attribs );
 299                 foreach( $merged as $key => $val ) {
 300                         # A false value suppresses the attribute, and we don't want the
 301                         # href attribute to be overridden.
 302                         if( $key != 'href' and $val !== false ) {
 303                                 $ret[$key] = $val;
 304                         }
 305                 }
 306                 wfProfileOut( __METHOD__ );
 307                 return $ret;
 308         }
 309
 310         /**
 311          * Default text of the links to the Title $target
 312          */
 313         private function linkText( $target ) {
 314                 # We might be passed a non-Title by make*LinkObj().  Fail gracefully.
 315                 if( !$target instanceof Title ) {
 316                         return '';
 317                 }
 318
 319                 # If the target is just a fragment, with no title, we return the frag-
 320                 # ment text.  Otherwise, we return the title text itself.
 321                 if( $target->getPrefixedText() === '' and $target->getFragment() !== '' ) {
 322                         return htmlspecialchars( $target->getFragment() );
 323                 }
 324                 return htmlspecialchars( $target->getPrefixedText() );
 325         }
 326
 327         /**
 328          * Generate either a normal exists-style link or a stub link, depending
 329          * on the given page size.
 330          *
 331          * @param $size Integer
 332          * @param $nt Title object.
 333          * @param $text String
 334          * @param $query String
 335          * @param $trail String
 336          * @param $prefix String
 337          * @return string HTML of link
 338          */
 339         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 340                 global $wgUser;
 341                 $threshold = intval( $wgUser->getOption( 'stubthreshold' ) );
 342                 $colour = ( $size < $threshold ) ? 'stub' : '';
 343                 // FIXME: replace deprecated makeColouredLinkObj by link()
 344                 return $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 345         }
 346
 347         /**
 348          * Make appropriate markup for a link to the current article. This is currently rendered
 349          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 350          * despite $query not being used.
 351          */
 352         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 353                 if ( '' == $text ) {
 354                         $text = htmlspecialchars( $nt->getPrefixedText() );
 355                 }
 356                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 357                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 358         }
 359
 360         function normaliseSpecialPage( Title $title ) {
 361                 if ( $title->getNamespace() == NS_SPECIAL ) {
 362                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $title->getDBkey() );
 363                         if ( !$name ) return $title;
 364                         $ret = SpecialPage::getTitleFor( $name, $subpage );
 365                         $ret->mFragment = $title->getFragment();
 366                         return $ret;
 367                 } else {
 368                         return $title;
 369                 }
 370         }
 371
 372         /**
 373          * Returns the filename part of an url.
 374          * Used as alternative text for external images.
 375          */
 376         function fnamePart( $url ) {
 377                 $basename = strrchr( $url, '/' );
 378                 if ( false === $basename ) {
 379                         $basename = $url;
 380                 } else {
 381                         $basename = substr( $basename, 1 );
 382                 }
 383                 return $basename;
 384         }
 385
 386         /**
 387          * Return the code for images which were added via external links,
 388          * via Parser::maybeMakeExternalImage().
 389          */
 390         function makeExternalImage( $url, $alt = '' ) {
 391                 if ( '' == $alt ) {
 392                         $alt = $this->fnamePart( $url );
 393                 }
 394                 $img = '';
 395                 $success = wfRunHooks('LinkerMakeExternalImage', array( &$url, &$alt, &$img ) );
 396                 if(!$success) {
 397                         wfDebug("Hook LinkerMakeExternalImage changed the output of external image with url {$url} and alt text {$alt} to {$img}\n", true);
 398                         return $img;
 399                 }
 400                 return Html::element( 'img',
 401                         array(
 402                                 'src' => $url,
 403                                 'alt' => $alt ) );
 404         }
 405
 406         /**
 407          * Given parameters derived from [[Image:Foo|options...]], generate the
 408          * HTML that that syntax inserts in the page.
 409          *
 410          * @param Title $title Title object
 411          * @param File $file File object, or false if it doesn't exist
 412          *
 413          * @param array $frameParams Associative array of parameters external to the media handler.
 414          *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
 415          *     will often be false.
 416          *          thumbnail       If present, downscale and frame
 417          *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
 418          *          framed          Shows image in original size in a frame
 419          *          frameless       Downscale but don't frame
 420          *          upright         If present, tweak default sizes for portrait orientation
 421          *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
 422          *          border          If present, show a border around the image
 423          *          align           Horizontal alignment (left, right, center, none)
 424          *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
 425          *                          bottom, text-bottom)
 426          *          alt             Alternate text for image (i.e. alt attribute). Plain text.
 427          *          caption         HTML for image caption.
 428          *          link-url        URL to link to
 429          *          link-title      Title object to link to
 430          *          no-link         Boolean, suppress description link
 431          *
 432          * @param array $handlerParams Associative array of media handler parameters, to be passed
 433          *       to transform(). Typical keys are "width" and "page".
 434          * @param string $time, timestamp of the file, set as false for current
 435          * @param string $query, query params for desc url
 436          * @return string HTML for an image, with links, wrappers, etc.
 437          */
 438         function makeImageLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false, $query = "" ) {
 439                 $res = null;
 440                 if( !wfRunHooks( 'ImageBeforeProduceHTML', array( &$this, &$title,
 441                 &$file, &$frameParams, &$handlerParams, &$time, &$res ) ) ) {
 442                         return $res;
 443                 }
 444
 445                 global $wgContLang, $wgUser, $wgThumbLimits, $wgThumbUpright;
 446                 if ( $file && !$file->allowInlineDisplay() ) {
 447                         wfDebug( __METHOD__.': '.$title->getPrefixedDBkey()." does not allow inline display\n" );
 448                         return $this->link( $title );
 449                 }
 450
 451                 // Shortcuts
 452                 $fp =& $frameParams;
 453                 $hp =& $handlerParams;
 454
 455                 // Clean up parameters
 456                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 457                 if ( !isset( $fp['align'] ) ) $fp['align'] = '';
 458                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 459                 if ( !isset( $fp['title'] ) ) $fp['title'] = '';
 460
 461                 $prefix = $postfix = '';
 462
 463                 if ( 'center' == $fp['align'] ) {
 464                         $prefix  = '<div class="center">';
 465                         $postfix = '</div>';
 466                         $fp['align']   = 'none';
 467                 }
 468                 if ( $file && !isset( $hp['width'] ) ) {
 469                         $hp['width'] = $file->getWidth( $page );
 470
 471                         if( isset( $fp['thumbnail'] ) || isset( $fp['framed'] ) || isset( $fp['frameless'] ) || !$hp['width'] ) {
 472                                 $wopt = $wgUser->getOption( 'thumbsize' );
 473
 474                                 if( !isset( $wgThumbLimits[$wopt] ) ) {
 475                                          $wopt = User::getDefaultOption( 'thumbsize' );
 476                                 }
 477
 478                                 // Reduce width for upright images when parameter 'upright' is used
 479                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 480                                         $fp['upright'] = $wgThumbUpright;
 481                                 }
 482                                 // Use width which is smaller: real image width or user preference width
 483                                 // For caching health: If width scaled down due to upright parameter, round to full __0 pixel to avoid the creation of a lot of odd thumbs
 484                                 $prefWidth = isset( $fp['upright'] ) ?
 485                                         round( $wgThumbLimits[$wopt] * $fp['upright'], -1 ) :
 486                                         $wgThumbLimits[$wopt];
 487                                 if ( $hp['width'] <= 0 || $prefWidth < $hp['width'] ) {
 488                                         $hp['width'] = $prefWidth;
 489                                 }
 490                         }
 491                 }
 492
 493                 if ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) {
 494                         # Create a thumbnail. Alignment depends on language
 495                         # writing direction, # right aligned for left-to-right-
 496                         # languages ("Western languages"), left-aligned
 497                         # for right-to-left-languages ("Semitic languages")
 498                         #
 499                         # If  thumbnail width has not been provided, it is set
 500                         # to the default user option as specified in Language*.php
 501                         if ( $fp['align'] == '' ) {
 502                                 $fp['align'] = $wgContLang->alignEnd();
 503                         }
 504                         return $prefix.$this->makeThumbLink2( $title, $file, $fp, $hp, $time, $query ).$postfix;
 505                 }
 506
 507                 if ( $file && isset( $fp['frameless'] ) ) {
 508                         $srcWidth = $file->getWidth( $page );
 509                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 510                         # This is the same behaviour as the "thumb" option does it already.
 511                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 512                                 $hp['width'] = $srcWidth;
 513                         }
 514                 }
 515
 516                 if ( $file && $hp['width'] ) {
 517                         # Create a resized image, without the additional thumbnail features
 518                         $thumb = $file->transform( $hp );
 519                 } else {
 520                         $thumb = false;
 521                 }
 522
 523                 if ( !$thumb ) {
 524                         $s = $this->makeBrokenImageLinkObj( $title, '', '', '', '', $time==true );
 525                 } else {
 526                         $params = array(
 527                                 'alt' => $fp['alt'],
 528                                 'title' => $fp['title'],
 529                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 530                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false );
 531                         if ( !empty( $fp['link-url'] ) ) {
 532                                 $params['custom-url-link'] = $fp['link-url'];
 533                         } elseif ( !empty( $fp['link-title'] ) ) {
 534                                 $params['custom-title-link'] = $fp['link-title'];
 535                         } elseif ( !empty( $fp['no-link'] ) ) {
 536                                 // No link
 537                         } else {
 538                                 $params['desc-link'] = true;
 539                                 $params['desc-query'] = $query;
 540                         }
 541
 542                         $s = $thumb->toHtml( $params );
 543                 }
 544                 if ( '' != $fp['align'] ) {
 545                         $s = "<div class=\"float{$fp['align']}\">{$s}</div>";
 546                 }
 547                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 548         }
 549
 550         /**
 551          * Make HTML for a thumbnail including image, border and caption
 552          * @param Title $title
 553          * @param File $file File object or false if it doesn't exist
 554          */
 555         function makeThumbLinkObj( Title $title, $file, $label = '', $alt, $align = 'right', $params = array(), $framed=false , $manualthumb = "" ) {
 556                 $frameParams = array(
 557                         'alt' => $alt,
 558                         'caption' => $label,
 559                         'align' => $align
 560                 );
 561                 if ( $framed ) $frameParams['framed'] = true;
 562                 if ( $manualthumb ) $frameParams['manualthumb'] = $manualthumb;
 563                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 564         }
 565
 566         function makeThumbLink2( Title $title, $file, $frameParams = array(), $handlerParams = array(), $time = false, $query = "" ) {
 567                 global $wgStylePath, $wgContLang;
 568                 $exists = $file && $file->exists();
 569
 570                 # Shortcuts
 571                 $fp =& $frameParams;
 572                 $hp =& $handlerParams;
 573
 574                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 575                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 576                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 577                 if ( !isset( $fp['title'] ) ) $fp['title'] = '';
 578                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 579
 580                 if ( empty( $hp['width'] ) ) {
 581                         // Reduce width for upright images when parameter 'upright' is used
 582                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 583                 }
 584                 $thumb = false;
 585
 586                 if ( !$exists ) {
 587                         $outerWidth = $hp['width'] + 2;
 588                 } else {
 589                         if ( isset( $fp['manualthumb'] ) ) {
 590                                 # Use manually specified thumbnail
 591                                 $manual_title = Title::makeTitleSafe( NS_FILE, $fp['manualthumb'] );
 592                                 if( $manual_title ) {
 593                                         $manual_img = wfFindFile( $manual_title );
 594                                         if ( $manual_img ) {
 595                                                 $thumb = $manual_img->getUnscaledThumb();
 596                                         } else {
 597                                                 $exists = false;
 598                                         }
 599                                 }
 600                         } elseif ( isset( $fp['framed'] ) ) {
 601                                 // Use image dimensions, don't scale
 602                                 $thumb = $file->getUnscaledThumb( $page );
 603                         } else {
 604                                 # Do not present an image bigger than the source, for bitmap-style images
 605                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 606                                 $srcWidth = $file->getWidth( $page );
 607                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 608                                         $hp['width'] = $srcWidth;
 609                                 }
 610                                 $thumb = $file->transform( $hp );
 611                         }
 612
 613                         if ( $thumb ) {
 614                                 $outerWidth = $thumb->getWidth() + 2;
 615                         } else {
 616                                 $outerWidth = $hp['width'] + 2;
 617                         }
 618                 }
 619
 620                 # ThumbnailImage::toHtml() already adds page= onto the end of DjVu URLs
 621                 # So we don't need to pass it here in $query. However, the URL for the
 622                 # zoom icon still needs it, so we make a unique query for it. See bug 14771
 623                 $url = $title->getLocalURL( $query );
 624                 if( $page ) {
 625                         $url = wfAppendQuery( $url, 'page=' . urlencode( $page ) );
 626                 }
 627
 628                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 629
 630                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 631                 if( !$exists ) {
 632                         $s .= $this->makeBrokenImageLinkObj( $title, '', '', '', '', $time==true );
 633                         $zoomicon = '';
 634                 } elseif ( !$thumb ) {
 635                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 636                         $zoomicon = '';
 637                 } else {
 638                         $s .= $thumb->toHtml( array(
 639                                 'alt' => $fp['alt'],
 640                                 'title' => $fp['title'],
 641                                 'img-class' => 'thumbimage',
 642                                 'desc-link' => true,
 643                                 'desc-query' => $query ) );
 644                         if ( isset( $fp['framed'] ) ) {
 645                                 $zoomicon="";
 646                         } else {
 647                                 $zoomicon =  '<div class="magnify">'.
 648                                         '<a href="'.$url.'" class="internal" title="'.$more.'">'.
 649                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 650                                         'width="15" height="11" alt="" /></a></div>';
 651                         }
 652                 }
 653                 $s .= '  <div class="thumbcaption">'.$zoomicon.$fp['caption']."</div></div></div>";
 654                 return str_replace("\n", ' ', $s);
 655         }
 656
 657         /**
 658          * Make a "broken" link to an image
 659          *
 660          * @param Title $title Image title
 661          * @param string $text Link label
 662          * @param string $query Query string
 663          * @param string $trail Link trail
 664          * @param string $prefix Link prefix
 665          * @param bool $time, a file of a certain timestamp was requested
 666          * @return string
 667          */
 668         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '', $time = false ) {
 669                 global $wgEnableUploads;
 670                 if( $title instanceof Title ) {
 671                         wfProfileIn( __METHOD__ );
 672                         $currentExists = $time ? ( wfFindFile( $title ) != false ) : false;
 673                         if( $wgEnableUploads && !$currentExists ) {
 674                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 675                                 if( $text == '' )
 676                                         $text = htmlspecialchars( $title->getPrefixedText() );
 677                                 $redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
 678                                 if( $redir ) {
 679                                         return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 680                                 }
 681                                 $q = 'wpDestFile=' . $title->getPartialUrl();
 682                                 if( $query != '' )
 683                                         $q .= '&' . $query;
 684                                 list( $inside, $trail ) = self::splitTrail( $trail );
 685                                 $style = $this->getInternalLinkAttributesObj( $title, $text, 'new' );
 686                                 wfProfileOut( __METHOD__ );
 687                                 return '<a href="' . $upload->escapeLocalUrl( $q ) . '"'
 688                                         . $style . '>' . $prefix . $text . $inside . '</a>' . $trail;
 689                         } else {
 690                                 wfProfileOut( __METHOD__ );
 691                                 return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 692                         }
 693                 } else {
 694                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 695                 }
 696         }
 697
 698         /**
 699          * Create a direct link to a given uploaded file.
 700          *
 701          * @param $title Title object.
 702          * @param $text String: pre-sanitized HTML
 703          * @param $time string: time image was created
 704          * @return string HTML
 705          *
 706          * @public
 707          * @todo Handle invalid or missing images better.
 708          */
 709         function makeMediaLinkObj( $title, $text = '', $time = false ) {
 710                 if( is_null( $title ) ) {
 711                         ### HOTFIX. Instead of breaking, return empty string.
 712                         return $text;
 713                 } else {
 714                         $img  = wfFindFile( $title, array( 'time' => $time ) );
 715                         if( $img ) {
 716                                 $url  = $img->getURL();
 717                                 $class = 'internal';
 718                         } else {
 719                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 720                                 $url = $upload->getLocalUrl( 'wpDestFile=' . urlencode( $title->getDBkey() ) );
 721                                 $class = 'new';
 722                         }
 723                         $alt = htmlspecialchars( $title->getText() );
 724                         if( $text == '' ) {
 725                                 $text = $alt;
 726                         }
 727                         $u = htmlspecialchars( $url );
 728                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 729                 }
 730         }
 731
 732         /**
 733          *  Make a link to a special page given its name and, optionally,
 734          * a message key from the link text.
 735          * Usage example: $skin->specialLink( 'recentchanges' )
 736          */
 737         function specialLink( $name, $key = '' ) {
 738                 global $wgContLang;
 739
 740                 if ( '' == $key ) { $key = strtolower( $name ); }
 741                 $pn = $wgContLang->ucfirst( $name );
 742                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 743                   wfMsg( $key ) );
 744         }
 745
 746         /**
 747          * Make an external link
 748          * @param String $url URL to link to
 749          * @param String $text text of link
 750          * @param boolean $escape Do we escape the link text?
 751          * @param String $linktype Type of external link. Gets added to the classes
 752          * @param array $attribs Array of extra attributes to <a>
 753          *
 754          * @todo FIXME: This is a really crappy implementation. $linktype and
 755          * 'external' are mashed into the class attrib for the link (which is made
 756          * into a string). Then, if we've got additional params in $attribs, we
 757          * add to it. People using this might want to change the classes (or other
 758          * default link attributes), but passing $attribsText is just messy. Would
 759          * make a lot more sense to make put the classes into $attribs, let the
 760          * hook play with them, *then* expand it all at once.
 761          */
 762         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $attribs = array() ) {
 763                 if ( isset( $attribs[ 'class' ] ) ) $class = $attribs[ 'class' ]; # yet another hack :(
 764                 else $class =  'external ' . $linktype;
 765
 766                 $attribsText = $this->getExternalLinkAttributes( $class );
 767                 $url = htmlspecialchars( $url );
 768                 if( $escape ) {
 769                         $text = htmlspecialchars( $text );
 770                 }
 771                 $link = '';
 772                 $success = wfRunHooks('LinkerMakeExternalLink', array( &$url, &$text, &$link, &$attribs, $linktype ) );
 773                 if(!$success) {
 774                         wfDebug("Hook LinkerMakeExternalLink changed the output of link with url {$url} and text {$text} to {$link}\n", true);
 775                         return $link;
 776                 }
 777                 if ( $attribs ) {
 778                         $attribsText .= Html::expandAttributes( $attribs );
 779                 }
 780                 return '<a href="'.$url.'"'.$attribsText.'>'.$text.'</a>';
 781         }
 782
 783         /**
 784          * Make user link (or user contributions for unregistered users)
 785          * @param $userId   Integer: user id in database.
 786          * @param $userText String: user name in database
 787          * @return string HTML fragment
 788          * @private
 789          */
 790         function userLink( $userId, $userText ) {
 791                 if( $userId == 0 ) {
 792                         $page = SpecialPage::getTitleFor( 'Contributions', $userText );
 793                 } else {
 794                         $page = Title::makeTitle( NS_USER, $userText );
 795                 }
 796                 return $this->link( $page, htmlspecialchars( $userText ), array( 'class' => 'mw-userlink' ) );
 797         }
 798
 799         /**
 800          * Generate standard user tool links (talk, contributions, block link, etc.)
 801          *
 802          * @param int $userId User identifier
 803          * @param string $userText User name or IP address
 804          * @param bool $redContribsWhenNoEdits Should the contributions link be red if the user has no edits?
 805          * @param int $flags Customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 806          * @param int $edits, user edit count (optional, for performance)
 807          * @return string
 808          */
 809         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0, $edits=null ) {
 810                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans, $wgLang;
 811                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 812                 $blockable = ( $wgSysopUserBans || 0 == $userId ) && !$flags & self::TOOL_LINKS_NOBLOCK;
 813
 814                 $items = array();
 815                 if( $talkable ) {
 816                         $items[] = $this->userTalkLink( $userId, $userText );
 817                 }
 818                 if( $userId ) {
 819                         // check if the user has an edit
 820                         $attribs = array();
 821                         if( $redContribsWhenNoEdits ) {
 822                                 $count = !is_null($edits) ? $edits : User::edits( $userId );
 823                                 if( $count == 0 ) {
 824                                         $attribs['class'] = 'new';
 825                                 }
 826                         }
 827                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 828
 829                         $items[] = $this->link( $contribsPage, wfMsgHtml( 'contribslink' ), $attribs );
 830                 }
 831                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 832                         $items[] = $this->blockLink( $userId, $userText );
 833                 }
 834
 835                 if( $items ) {
 836                         return ' <span class="mw-usertoollinks">(' . $wgLang->pipeList( $items ) . ')</span>';
 837                 } else {
 838                         return '';
 839                 }
 840         }
 841
 842         /**
 843          * Alias for userToolLinks( $userId, $userText, true );
 844          * @param int $userId User identifier
 845          * @param string $userText User name or IP address
 846          * @param int $edits, user edit count (optional, for performance)
 847          */
 848         public function userToolLinksRedContribs( $userId, $userText, $edits=null ) {
 849                 return $this->userToolLinks( $userId, $userText, true, 0, $edits );
 850         }
 851
 852
 853         /**
 854          * @param $userId Integer: user id in database.
 855          * @param $userText String: user name in database.
 856          * @return string HTML fragment with user talk link
 857          * @private
 858          */
 859         function userTalkLink( $userId, $userText ) {
 860                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 861                 $userTalkLink = $this->link( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 862                 return $userTalkLink;
 863         }
 864
 865         /**
 866          * @param $userId Integer: userid
 867          * @param $userText String: user name in database.
 868          * @return string HTML fragment with block link
 869          * @private
 870          */
 871         function blockLink( $userId, $userText ) {
 872                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 873                 $blockLink = $this->link( $blockPage, wfMsgHtml( 'blocklink' ) );
 874                 return $blockLink;
 875         }
 876
 877         /**
 878          * Generate a user link if the current user is allowed to view it
 879          * @param $rev Revision object.
 880          * @param $isPublic, bool, show only if all users can see it
 881          * @return string HTML
 882          */
 883         function revUserLink( $rev, $isPublic = false ) {
 884                 if( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 885                         $link = wfMsgHtml( 'rev-deleted-user' );
 886                 } else if( $rev->userCan( Revision::DELETED_USER ) ) {
 887                         $link = $this->userLink( $rev->getUser( Revision::FOR_THIS_USER ),
 888                                 $rev->getUserText( Revision::FOR_THIS_USER ) );
 889                 } else {
 890                         $link = wfMsgHtml( 'rev-deleted-user' );
 891                 }
 892                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 893                         return '<span class="history-deleted">' . $link . '</span>';
 894                 }
 895                 return $link;
 896         }
 897
 898         /**
 899          * Generate a user tool link cluster if the current user is allowed to view it
 900          * @param $rev Revision object.
 901          * @param $isPublic, bool, show only if all users can see it
 902          * @return string HTML
 903          */
 904         function revUserTools( $rev, $isPublic = false ) {
 905                 if( $rev->isDeleted( Revision::DELETED_USER ) && $isPublic ) {
 906                         $link = wfMsgHtml( 'rev-deleted-user' );
 907                 } else if( $rev->userCan( Revision::DELETED_USER ) ) {
 908                         $userId = $rev->getUser( Revision::FOR_THIS_USER );
 909                         $userText = $rev->getUserText( Revision::FOR_THIS_USER );
 910                         $link = $this->userLink( $userId, $userText ) .
 911                                 ' ' . $this->userToolLinks( $userId, $userText );
 912                 } else {
 913                         $link = wfMsgHtml( 'rev-deleted-user' );
 914                 }
 915                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 916                         return ' <span class="history-deleted">' . $link . '</span>';
 917                 }
 918                 return $link;
 919         }
 920
 921         /**
 922          * This function is called by all recent changes variants, by the page history,
 923          * and by the user contributions list. It is responsible for formatting edit
 924          * comments. It escapes any HTML in the comment, but adds some CSS to format
 925          * auto-generated comments (from section editing) and formats [[wikilinks]].
 926          *
 927          * @author Erik Moeller <moeller@scireview.de>
 928          *
 929          * Note: there's not always a title to pass to this function.
 930          * Since you can't set a default parameter for a reference, I've turned it
 931          * temporarily to a value pass. Should be adjusted further. --brion
 932          *
 933          * @param string $comment
 934          * @param mixed $title Title object (to generate link to the section in autocomment) or null
 935          * @param bool $local Whether section links should refer to local page
 936          */
 937         function formatComment($comment, $title = null, $local = false) {
 938                 wfProfileIn( __METHOD__ );
 939
 940                 # Sanitize text a bit:
 941                 $comment = str_replace( "\n", " ", $comment );
 942                 # Allow HTML entities (for bug 13815)
 943                 $comment = Sanitizer::escapeHtmlAllowEntities( $comment );
 944
 945                 # Render autocomments and make links:
 946                 $comment = $this->formatAutoComments( $comment, $title, $local );
 947                 $comment = $this->formatLinksInComment( $comment, $title, $local );
 948
 949                 wfProfileOut( __METHOD__ );
 950                 return $comment;
 951         }
 952
 953         /**
 954          * The pattern for autogen comments is / * foo * /, which makes for
 955          * some nasty regex.
 956          * We look for all comments, match any text before and after the comment,
 957          * add a separator where needed and format the comment itself with CSS
 958          * Called by Linker::formatComment.
 959          *
 960          * @param string $comment Comment text
 961          * @param object $title An optional title object used to links to sections
 962          * @return string $comment formatted comment
 963          *
 964          * @todo Document the $local parameter.
 965          */
 966         private function formatAutocomments( $comment, $title = null, $local = false ) {
 967                 // Bah!
 968                 $this->autocommentTitle = $title;
 969                 $this->autocommentLocal = $local;
 970                 $comment = preg_replace_callback(
 971                         '!(.*)/\*\s*(.*?)\s*\*/(.*)!',
 972                         array( $this, 'formatAutocommentsCallback' ),
 973                         $comment );
 974                 unset( $this->autocommentTitle );
 975                 unset( $this->autocommentLocal );
 976                 return $comment;
 977         }
 978
 979         private function formatAutocommentsCallback( $match ) {
 980                 $title = $this->autocommentTitle;
 981                 $local = $this->autocommentLocal;
 982
 983                 $pre=$match[1];
 984                 $auto=$match[2];
 985                 $post=$match[3];
 986                 $link='';
 987                 if( $title ) {
 988                         $section = $auto;
 989
 990                         # Generate a valid anchor name from the section title.
 991                         # Hackish, but should generally work - we strip wiki
 992                         # syntax, including the magic [[: that is used to
 993                         # "link rather than show" in case of images and
 994                         # interlanguage links.
 995                         $section = str_replace( '[[:', '', $section );
 996                         $section = str_replace( '[[', '', $section );
 997                         $section = str_replace( ']]', '', $section );
 998                         if ( $local ) {
 999                                 $sectionTitle = Title::newFromText( '#' . $section );
1000                         } else {
1001                                 $sectionTitle = Title::makeTitleSafe( $title->getNamespace(),
1002                                         $title->getDBkey(), $section );
1003                         }
1004                         if ( $sectionTitle ) {
1005                                 $link = $this->link( $sectionTitle,
1006                                         htmlspecialchars( wfMsgForContent( 'sectionlink' ) ), array(), array(),
1007                                         'noclasses' );
1008                         } else {
1009                                 $link = '';
1010                         }
1011                 }
1012                 $auto = "$link$auto";
1013                 if( $pre ) {
1014                         # written summary $presep autocomment (summary /* section */)
1015                         $auto = wfMsgExt( 'autocomment-prefix', array( 'escapenoentities', 'content' ) ) . $auto;
1016                 }
1017                 if( $post ) {
1018                         # autocomment $postsep written summary (/* section */ summary)
1019                         $auto .= wfMsgExt( 'colon-separator', array( 'escapenoentities', 'content' ) );
1020                 }
1021                 $auto = '<span class="autocomment">' . $auto . '</span>';
1022                 $comment = $pre . $auto . $post;
1023                 return $comment;
1024         }
1025
1026         /**
1027          * Formats wiki links and media links in text; all other wiki formatting
1028          * is ignored
1029          *
1030          * @todo Fixme: doesn't handle sub-links as in image thumb texts like the main parser
1031          * @param string $comment Text to format links in
1032          * @return string
1033          */
1034         public function formatLinksInComment( $comment, $title = null, $local = false ) {
1035                 $this->commentContextTitle = $title;
1036                 $this->commentLocal = $local;
1037                 $html = preg_replace_callback(
1038                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1039                         array( $this, 'formatLinksInCommentCallback' ),
1040                         $comment );
1041                 unset( $this->commentContextTitle );
1042                 unset( $this->commentLocal );
1043                 return $html;
1044         }
1045
1046         protected function formatLinksInCommentCallback( $match ) {
1047                 global $wgContLang;
1048
1049                 $medians = '(?:' . preg_quote( MWNamespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1050                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1051
1052                 $comment = $match[0];
1053
1054                 # fix up urlencoded title texts (copied from Parser::replaceInternalLinks)
1055                 if( strpos( $match[1], '%' ) !== false ) {
1056                         $match[1] = str_replace( array('<', '>'), array('&lt;', '&gt;'), urldecode($match[1]) );
1057                 }
1058
1059                 # Handle link renaming [[foo|text]] will show link as "text"
1060                 if( "" != $match[3] ) {
1061                         $text = $match[3];
1062                 } else {
1063                         $text = $match[1];
1064                 }
1065                 $submatch = array();
1066                 $thelink = null;
1067                 if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1068                         # Media link; trail not supported.
1069                         $linkRegexp = '/\[\[(.*?)\]\]/';
1070                         $title = Title::makeTitleSafe( NS_FILE, $submatch[1] );
1071                         $thelink = $this->makeMediaLinkObj( $title, $text );
1072                 } else {
1073                         # Other kind of link
1074                         if( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1075                                 $trail = $submatch[1];
1076                         } else {
1077                                 $trail = "";
1078                         }
1079                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1080                         if (isset($match[1][0]) && $match[1][0] == ':')
1081                                 $match[1] = substr($match[1], 1);
1082                         list( $inside, $trail ) = Linker::splitTrail( $trail );
1083
1084                         $linkText = $text;
1085                         $linkTarget = Linker::normalizeSubpageLink( $this->commentContextTitle,
1086                                 $match[1], $linkText );
1087
1088                         $target = Title::newFromText( $linkTarget );
1089                         if( $target ) {
1090                                 if( $target->getText() == '' && !$this->commentLocal && $this->commentContextTitle ) {
1091                                         $newTarget = clone( $this->commentContextTitle );
1092                                         $newTarget->setFragment( '#' . $target->getFragment() );
1093                                         $target = $newTarget;
1094                                 }
1095                                 $thelink = $this->link(
1096                                         $target,
1097                                         $linkText . $inside
1098                                 ) . $trail;
1099                         }
1100                 }
1101                 if( $thelink ) {
1102                         // If the link is still valid, go ahead and replace it in!
1103                         $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1104                 }
1105
1106                 return $comment;
1107         }
1108
1109         static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
1110                 # Valid link forms:
1111                 # Foobar -- normal
1112                 # :Foobar -- override special treatment of prefix (images, language links)
1113                 # /Foobar -- convert to CurrentPage/Foobar
1114                 # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
1115                 # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
1116                 # ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage
1117
1118                 wfProfileIn( __METHOD__ );
1119                 $ret = $target; # default return value is no change
1120
1121                 # Some namespaces don't allow subpages,
1122                 # so only perform processing if subpages are allowed
1123                 if( $contextTitle && MWNamespace::hasSubpages( $contextTitle->getNamespace() ) ) {
1124                         $hash = strpos( $target, '#' );
1125                         if( $hash !== false ) {
1126                                 $suffix = substr( $target, $hash );
1127                                 $target = substr( $target, 0, $hash );
1128                         } else {
1129                                 $suffix = '';
1130                         }
1131                         # bug 7425
1132                         $target = trim( $target );
1133                         # Look at the first character
1134                         if( $target != '' && $target{0} === '/' ) {
1135                                 # / at end means we don't want the slash to be shown
1136                                 $m = array();
1137                                 $trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
1138                                 if( $trailingSlashes ) {
1139                                         $noslash = $target = substr( $target, 1, -strlen($m[0][0]) );
1140                                 } else {
1141                                         $noslash = substr( $target, 1 );
1142                                 }
1143
1144                                 $ret = $contextTitle->getPrefixedText(). '/' . trim($noslash) . $suffix;
1145                                 if( '' === $text ) {
1146                                         $text = $target . $suffix;
1147                                 } # this might be changed for ugliness reasons
1148                         } else {
1149                                 # check for .. subpage backlinks
1150                                 $dotdotcount = 0;
1151                                 $nodotdot = $target;
1152                                 while( strncmp( $nodotdot, "../", 3 ) == 0 ) {
1153                                         ++$dotdotcount;
1154                                         $nodotdot = substr( $nodotdot, 3 );
1155                                 }
1156                                 if($dotdotcount > 0) {
1157                                         $exploded = explode( '/', $contextTitle->GetPrefixedText() );
1158                                         if( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
1159                                                 $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
1160                                                 # / at the end means don't show full path
1161                                                 if( substr( $nodotdot, -1, 1 ) === '/' ) {
1162                                                         $nodotdot = substr( $nodotdot, 0, -1 );
1163                                                         if( '' === $text ) {
1164                                                                 $text = $nodotdot . $suffix;
1165                                                         }
1166                                                 }
1167                                                 $nodotdot = trim( $nodotdot );
1168                                                 if( $nodotdot != '' ) {
1169                                                         $ret .= '/' . $nodotdot;
1170                                                 }
1171                                                 $ret .= $suffix;
1172                                         }
1173                                 }
1174                         }
1175                 }
1176
1177                 wfProfileOut( __METHOD__ );
1178                 return $ret;
1179         }
1180
1181         /**
1182          * Wrap a comment in standard punctuation and formatting if
1183          * it's non-empty, otherwise return empty string.
1184          *
1185          * @param string $comment
1186          * @param mixed $title Title object (to generate link to section in autocomment) or null
1187          * @param bool $local Whether section links should refer to local page
1188          *
1189          * @return string
1190          */
1191         function commentBlock( $comment, $title = null, $local = false ) {
1192                 // '*' used to be the comment inserted by the software way back
1193                 // in antiquity in case none was provided, here for backwards
1194                 // compatability, acc. to brion -ævar
1195                 if( $comment == '' || $comment == '*' ) {
1196                         return '';
1197                 } else {
1198                         $formatted = $this->formatComment( $comment, $title, $local );
1199                         return " <span class=\"comment\">($formatted)</span>";
1200                 }
1201         }
1202
1203         /**
1204          * Wrap and format the given revision's comment block, if the current
1205          * user is allowed to view it.
1206          *
1207          * @param Revision $rev
1208          * @param bool $local Whether section links should refer to local page
1209          * @param $isPublic, show only if all users can see it
1210          * @return string HTML
1211          */
1212         function revComment( Revision $rev, $local = false, $isPublic = false ) {
1213                 if( $rev->getRawComment() == "" ) return "";
1214                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) && $isPublic ) {
1215                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1216                 } else if( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1217                         $block = $this->commentBlock( $rev->getComment( Revision::FOR_THIS_USER ),
1218                                 $rev->getTitle(), $local );
1219                 } else {
1220                         $block = " <span class=\"comment\">" . wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1221                 }
1222                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1223                         return " <span class=\"history-deleted\">$block</span>";
1224                 }
1225                 return $block;
1226         }
1227
1228         public function formatRevisionSize( $size ) {
1229                 if ( $size == 0 ) {
1230                         $stxt = wfMsgExt( 'historyempty', 'parsemag' );
1231                 } else {
1232                         global $wgLang;
1233                         $stxt = wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $size ) );
1234                         $stxt = "($stxt)";
1235                 }
1236                 $stxt = htmlspecialchars( $stxt );
1237                 return "<span class=\"history-size\">$stxt</span>";
1238         }
1239
1240         /**
1241          * Add another level to the Table of Contents
1242          */
1243         function tocIndent() {
1244                 return "\n<ul>";
1245         }
1246
1247         /**
1248          * Finish one or more sublevels on the Table of Contents
1249          */
1250         function tocUnindent($level) {
1251                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
1252         }
1253
1254         /**
1255          * parameter level defines if we are on an indentation level
1256          */
1257         function tocLine( $anchor, $tocline, $tocnumber, $level, $sectionIndex = false ) {
1258                 $classes = "toclevel-$level";
1259                 if ( $sectionIndex !== false )
1260                         $classes .= " tocsection-$sectionIndex";
1261                 return "\n<li class=\"$classes\"><a href=\"#" .
1262                         $anchor . '"><span class="tocnumber">' .
1263                         $tocnumber . '</span> <span class="toctext">' .
1264                         $tocline . '</span></a>';
1265         }
1266
1267         /**
1268          * End a Table Of Contents line.
1269          * tocUnindent() will be used instead if we're ending a line below
1270          * the new level.
1271          */
1272         function tocLineEnd() {
1273                 return "</li>\n";
1274         }
1275
1276         /**
1277          * Wraps the TOC in a table and provides the hide/collapse javascript.
1278          * @param string $toc html of the Table Of Contents
1279          * @return string Full html of the TOC
1280          */
1281         function tocList($toc) {
1282                 $title = wfMsgHtml('toc') ;
1283                 return
1284                    '<table id="toc" class="toc"><tr><td>'
1285                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1286                  . $toc
1287                  # no trailing newline, script should not be wrapped in a
1288                  # paragraph
1289                  . "</ul>\n</td></tr></table>"
1290                  . Html::inlineScript(
1291                         'if (window.showTocToggle) {'
1292                         . ' var tocShowText = "' . Xml::escapeJsString( wfMsg('showtoc') ) . '";'
1293                         . ' var tocHideText = "' . Xml::escapeJsString( wfMsg('hidetoc') ) . '";'
1294                         . ' showTocToggle();'
1295                         . ' } ' )
1296                 . "\n";
1297         }
1298
1299         /**
1300          * Generate a table of contents from a section tree
1301          * Currently unused.
1302          * @param $tree Return value of ParserOutput::getSections()
1303          * @return string HTML
1304          */
1305         public function generateTOC( $tree ) {
1306                 $toc = '';
1307                 $lastLevel = 0;
1308                 foreach ( $tree as $section ) {
1309                         if ( $section['toclevel'] > $lastLevel )
1310                                 $toc .= $this->tocIndent();
1311                         else if ( $section['toclevel'] < $lastLevel )
1312                                 $toc .= $this->tocUnindent(
1313                                         $lastLevel - $section['toclevel'] );
1314                         else
1315                                 $toc .= $this->tocLineEnd();
1316
1317                         $toc .= $this->tocLine( $section['anchor'],
1318                                 $section['line'], $section['number'],
1319                                 $section['toclevel'], $section['index'] );
1320                         $lastLevel = $section['toclevel'];
1321                 }
1322                 $toc .= $this->tocLineEnd();
1323                 return $this->tocList( $toc );
1324         }
1325
1326         /**
1327          * Create a section edit link.  This supersedes editSectionLink() and
1328          * editSectionLinkForOther().
1329          *
1330          * @param $nt      Title  The title being linked to (may not be the same as
1331          *   $wgTitle, if the section is included from a template)
1332          * @param $section string The designation of the section being pointed to,
1333          *   to be included in the link, like "&section=$section"
1334          * @param $tooltip string The tooltip to use for the link: will be escaped
1335          *   and wrapped in the 'editsectionhint' message
1336          * @return         string HTML to use for edit link
1337          */
1338         public function doEditSectionLink( Title $nt, $section, $tooltip = null ) {
1339                 $attribs = array();
1340                 if( !is_null( $tooltip ) ) {
1341                         $attribs['title'] = wfMsg( 'editsectionhint', $tooltip );
1342                 }
1343                 $link = $this->link( $nt, wfMsg('editsection'),
1344                         $attribs,
1345                         array( 'action' => 'edit', 'section' => $section ),
1346                         array( 'noclasses', 'known' )
1347                 );
1348
1349                 # Run the old hook.  This takes up half of the function . . . hopefully
1350                 # we can rid of it someday.
1351                 $attribs = '';
1352                 if( $tooltip ) {
1353                         $attribs = wfMsgHtml( 'editsectionhint', htmlspecialchars( $tooltip ) );
1354                         $attribs = " title=\"$attribs\"";
1355                 }
1356                 $result = null;
1357                 wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $attribs, $link, &$result ) );
1358                 if( !is_null( $result ) ) {
1359                         # For reverse compatibility, add the brackets *after* the hook is
1360                         # run, and even add them to hook-provided text.  (This is the main
1361                         # reason that the EditSectionLink hook is deprecated in favor of
1362                         # DoEditSectionLink: it can't change the brackets or the span.)
1363                         $result = wfMsgHtml( 'editsection-brackets', $result );
1364                         return "<span class=\"editsection\">$result</span>";
1365                 }
1366
1367                 # Add the brackets and the span, and *then* run the nice new hook, with
1368                 # clean and non-redundant arguments.
1369                 $result = wfMsgHtml( 'editsection-brackets', $link );
1370                 $result = "<span class=\"editsection\">$result</span>";
1371
1372                 wfRunHooks( 'DoEditSectionLink', array( $this, $nt, $section, $tooltip, &$result ) );
1373                 return $result;
1374         }
1375
1376         /**
1377          * Create a headline for content
1378          *
1379          * @param int    $level   The level of the headline (1-6)
1380          * @param string $attribs Any attributes for the headline, starting with a space and ending with '>'
1381          *                        This *must* be at least '>' for no attribs
1382          * @param string $anchor  The anchor to give the headline (the bit after the #)
1383          * @param string $text    The text of the header
1384          * @param string $link    HTML to add for the section edit link
1385          * @param mixed  $legacyAnchor A second, optional anchor to give for
1386          *   backward compatibility (false to omit)
1387          *
1388          * @return string HTML headline
1389          */
1390         public function makeHeadline( $level, $attribs, $anchor, $text, $link, $legacyAnchor = false ) {
1391                 $ret = "<h$level$attribs"
1392                         . $link
1393                         . " <span class=\"mw-headline\" id=\"$anchor\">$text</span>"
1394                         . "</h$level>";
1395                 if ( $legacyAnchor !== false ) {
1396                         $ret = "<a id=\"$legacyAnchor\"></a>$ret";
1397                 }
1398                 return $ret;
1399         }
1400
1401         /**
1402          * Split a link trail, return the "inside" portion and the remainder of the trail
1403          * as a two-element array
1404          *
1405          * @static
1406          */
1407         static function splitTrail( $trail ) {
1408                 static $regex = false;
1409                 if ( $regex === false ) {
1410                         global $wgContLang;
1411                         $regex = $wgContLang->linkTrail();
1412                 }
1413                 $inside = '';
1414                 if ( '' != $trail ) {
1415                         $m = array();
1416                         if ( preg_match( $regex, $trail, $m ) ) {
1417                                 $inside = $m[1];
1418                                 $trail = $m[2];
1419                         }
1420                 }
1421                 return array( $inside, $trail );
1422         }
1423
1424         /**
1425          * Generate a rollback link for a given revision.  Currently it's the
1426          * caller's responsibility to ensure that the revision is the top one. If
1427          * it's not, of course, the user will get an error message.
1428          *
1429          * If the calling page is called with the parameter &bot=1, all rollback
1430          * links also get that parameter. It causes the edit itself and the rollback
1431          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1432          * changes, so this allows sysops to combat a busy vandal without bothering
1433          * other users.
1434          *
1435          * @param Revision $rev
1436          */
1437         function generateRollback( $rev ) {
1438                 return '<span class="mw-rollback-link">['
1439                         . $this->buildRollbackLink( $rev )
1440                         . ']</span>';
1441         }
1442
1443         /**
1444          * Build a raw rollback link, useful for collections of "tool" links
1445          *
1446          * @param Revision $rev
1447          * @return string
1448          */
1449         public function buildRollbackLink( $rev ) {
1450                 global $wgRequest, $wgUser;
1451                 $title = $rev->getTitle();
1452                 $query = array(
1453                         'action' => 'rollback',
1454                         'from' => $rev->getUserText()
1455                 );
1456                 if( $wgRequest->getBool( 'bot' ) ) {
1457                         $query['bot'] = '1';
1458                         $query['hidediff'] = '1'; // bug 15999
1459                 }
1460                 $query['token'] = $wgUser->editToken( array( $title->getPrefixedText(),
1461                         $rev->getUserText() ) );
1462                 return $this->link( $title, wfMsgHtml( 'rollbacklink' ),
1463                         array( 'title' => wfMsg( 'tooltip-rollback' ) ),
1464                         $query, array( 'known', 'noclasses' ) );
1465         }
1466
1467         /**
1468          * Returns HTML for the "templates used on this page" list.
1469          *
1470          * @param array $templates Array of templates from Article::getUsedTemplate
1471          * or similar
1472          * @param bool $preview Whether this is for a preview
1473          * @param bool $section Whether this is for a section edit
1474          * @return string HTML output
1475          */
1476         public function formatTemplates( $templates, $preview = false, $section = false ) {
1477                 wfProfileIn( __METHOD__ );
1478
1479                 $outText = '';
1480                 if ( count( $templates ) > 0 ) {
1481                         # Do a batch existence check
1482                         $batch = new LinkBatch;
1483                         foreach( $templates as $title ) {
1484                                 $batch->addObj( $title );
1485                         }
1486                         $batch->execute();
1487
1488                         # Construct the HTML
1489                         $outText = '<div class="mw-templatesUsedExplanation">';
1490                         if ( $preview ) {
1491                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ), count( $templates ) );
1492                         } elseif ( $section ) {
1493                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ), count( $templates ) );
1494                         } else {
1495                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ), count( $templates ) );
1496                         }
1497                         $outText .= "</div><ul>\n";
1498
1499                         usort( $templates, array( 'Title', 'compare' ) );
1500                         foreach ( $templates as $titleObj ) {
1501                                 $r = $titleObj->getRestrictions( 'edit' );
1502                                 if ( in_array( 'sysop', $r ) ) {
1503                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1504                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1505                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1506                                 } else {
1507                                         $protected = '';
1508                                 }
1509                                 if( $titleObj->quickUserCan( 'edit' ) ) {
1510                                         $editLink = $this->link(
1511                                                 $titleObj,
1512                                                 wfMsg( 'editlink' ),
1513                                                 array(),
1514                                                 array( 'action' => 'edit' )
1515                                         );
1516                                 } else {
1517                                         $editLink = $this->link(
1518                                                 $titleObj,
1519                                                 wfMsg( 'viewsourcelink' ),
1520                                                 array(),
1521                                                 array( 'action' => 'edit' )
1522                                         );
1523                                 }
1524                                 $outText .= '<li>' . $this->link( $titleObj ) . ' (' . $editLink . ') ' . $protected . '</li>';
1525                         }
1526                         $outText .= '</ul>';
1527                 }
1528                 wfProfileOut( __METHOD__  );
1529                 return $outText;
1530         }
1531
1532         /**
1533          * Returns HTML for the "hidden categories on this page" list.
1534          *
1535          * @param array $hiddencats Array of hidden categories from Article::getHiddenCategories
1536          * or similar
1537          * @return string HTML output
1538          */
1539         public function formatHiddenCategories( $hiddencats ) {
1540                 global $wgLang;
1541                 wfProfileIn( __METHOD__ );
1542
1543                 $outText = '';
1544                 if ( count( $hiddencats ) > 0 ) {
1545                         # Construct the HTML
1546                         $outText = '<div class="mw-hiddenCategoriesExplanation">';
1547                         $outText .= wfMsgExt( 'hiddencategories', array( 'parse' ), $wgLang->formatnum( count( $hiddencats ) ) );
1548                         $outText .= "</div><ul>\n";
1549
1550                         foreach ( $hiddencats as $titleObj ) {
1551                                 $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
1552                         }
1553                         $outText .= '</ul>';
1554                 }
1555                 wfProfileOut( __METHOD__  );
1556                 return $outText;
1557         }
1558
1559         /**
1560          * Format a size in bytes for output, using an appropriate
1561          * unit (B, KB, MB or GB) according to the magnitude in question
1562          *
1563          * @param $size Size to format
1564          * @return string
1565          */
1566         public function formatSize( $size ) {
1567                 global $wgLang;
1568                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1569         }
1570
1571         /**
1572          * Given the id of an interface element, constructs the appropriate title
1573          * attribute from the system messages.  (Note, this is usually the id but
1574          * isn't always, because sometimes the accesskey needs to go on a different
1575          * element than the id, for reverse-compatibility, etc.)
1576          *
1577          * @param string $name    Id of the element, minus prefixes.
1578          * @param mixed  $options null or the string 'withaccess' to add an access-
1579          *   key hint
1580          * @return string Contents of the title attribute (which you must HTML-
1581          *   escape), or false for no title attribute
1582          */
1583         public function titleAttrib( $name, $options = null ) {
1584                 wfProfileIn( __METHOD__ );
1585
1586                 $tooltip = wfMsg( "tooltip-$name" );
1587                 # Compatibility: formerly some tooltips had [alt-.] hardcoded
1588                 $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1589
1590                 # Message equal to '-' means suppress it.
1591                 if ( wfEmptyMsg( "tooltip-$name", $tooltip ) || $tooltip == '-' ) {
1592                         $tooltip = false;
1593                 }
1594
1595                 if ( $options == 'withaccess' ) {
1596                         $accesskey = $this->accesskey( $name );
1597                         if( $accesskey !== false ) {
1598                                 if ( $tooltip === false || $tooltip === '' ) {
1599                                         $tooltip = "[$accesskey]";
1600                                 } else {
1601                                         $tooltip .= " [$accesskey]";
1602                                 }
1603                         }
1604                 }
1605
1606                 wfProfileOut( __METHOD__ );
1607                 return $tooltip;
1608         }
1609
1610         /**
1611          * Given the id of an interface element, constructs the appropriate
1612          * accesskey attribute from the system messages.  (Note, this is usually
1613          * the id but isn't always, because sometimes the accesskey needs to go on
1614          * a different element than the id, for reverse-compatibility, etc.)
1615          *
1616          * @param string $name    Id of the element, minus prefixes.
1617          * @return string Contents of the accesskey attribute (which you must HTML-
1618          *   escape), or false for no accesskey attribute
1619          */
1620         public function accesskey( $name ) {
1621                 wfProfileIn( __METHOD__ );
1622
1623                 $accesskey = wfMsg( "accesskey-$name" );
1624
1625                 # FIXME: Per standard MW behavior, a value of '-' means to suppress the
1626                 # attribute, but this is broken for accesskey: that might be a useful
1627                 # value.
1628                 if( $accesskey != '' && $accesskey != '-' && !wfEmptyMsg( "accesskey-$name", $accesskey ) ) {
1629                         wfProfileOut( __METHOD__ );
1630                         return $accesskey;
1631                 }
1632
1633                 wfProfileOut( __METHOD__ );
1634                 return false;
1635         }
1636
1637         /**
1638          * Creates a (show/hide) link for deleting revisions/log entries
1639          *
1640          * @param array $query  Query parameters to be passed to link()
1641          * @param bool $restricted  Set to true to use a <strong> instead of a <span>
1642          * @param bool $delete Set to true to use (show/hide) rather than (show)
1643          *
1644          * @return string HTML <a> link to Special:Revisiondelete, wrapped in a
1645          * span to allow for customization of appearance with CSS
1646          */
1647         public function revDeleteLink( $query = array(), $restricted = false, $delete = true ) {
1648                 $sp = SpecialPage::getTitleFor( 'Revisiondelete' );
1649                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1650                 $tag = $restricted ? 'strong' : 'span';
1651                 $link = $this->link( $sp, $text, array(), $query, array( 'known', 'noclasses' ) );
1652                 return Xml::tags( $tag, array( 'class' => 'mw-revdelundel-link' ), "($link)" );
1653         }
1654
1655         /**
1656          * Creates a dead (show/hide) link for deleting revisions/log entries
1657          *
1658          * @param bool $delete Set to true to use (show/hide) rather than (show)
1659          *
1660          * @return string HTML text wrapped in a span to allow for customization
1661          * of appearance with CSS
1662          */
1663         public function revDeleteLinkDisabled( $delete = true ) {
1664                 $text = $delete ? wfMsgHtml( 'rev-delundel' ) : wfMsgHtml( 'rev-showdeleted' );
1665                 return Xml::tags( 'span', array( 'class' => 'mw-revdelundel-link' ), "($text)" );
1666         }
1667
1668         /* Deprecated methods */
1669
1670         /**
1671          * @deprecated
1672          */
1673         function postParseLinkColour( $s = null ) {
1674                 wfDeprecated( __METHOD__ );
1675                 return null;
1676         }
1677
1678
1679         /**
1680          * @deprecated Use link()
1681          *
1682          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
1683          * it if you already have a title object handy. See makeLinkObj for further documentation.
1684          *
1685          * @param $title String: the text of the title
1686          * @param $text  String: link text
1687          * @param $query String: optional query part
1688          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1689          *                      be included in the link text. Other characters will be appended after
1690          *                      the end of the link.
1691          */
1692         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
1693                 wfProfileIn( __METHOD__ );
1694                 $nt = Title::newFromText( $title );
1695                 if ( $nt instanceof Title ) {
1696                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
1697                 } else {
1698                         wfDebug( 'Invalid title passed to Linker::makeLink(): "'.$title."\"\n" );
1699                         $result = $text == "" ? $title : $text;
1700                 }
1701
1702                 wfProfileOut( __METHOD__ );
1703                 return $result;
1704         }
1705
1706         /**
1707          * @deprecated Use link()
1708          *
1709          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
1710          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
1711          *
1712          * @param $title String: the text of the title
1713          * @param $text  String: link text
1714          * @param $query String: optional query part
1715          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1716          *                      be included in the link text. Other characters will be appended after
1717          *                      the end of the link.
1718          */
1719         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
1720                 $nt = Title::newFromText( $title );
1721                 if ( $nt instanceof Title ) {
1722                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
1723                 } else {
1724                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "'.$title."\"\n" );
1725                         return $text == '' ? $title : $text;
1726                 }
1727         }
1728
1729         /**
1730          * @deprecated Use link()
1731          *
1732          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
1733          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
1734          *
1735          * @param string $title The text of the title
1736          * @param string $text Link text
1737          * @param string $query Optional query part
1738          * @param string $trail 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          */
1742         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
1743                 $nt = Title::newFromText( $title );
1744                 if ( $nt instanceof Title ) {
1745                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
1746                 } else {
1747                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "'.$title."\"\n" );
1748                         return $text == '' ? $title : $text;
1749                 }
1750         }
1751
1752         /**
1753          * @deprecated Use link()
1754          *
1755          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
1756          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
1757          *
1758          * @param $title String: the text of the title
1759          * @param $text  String: link text
1760          * @param $query String: optional query part
1761          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1762          *                      be included in the link text. Other characters will be appended after
1763          *                      the end of the link.
1764          */
1765         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
1766                 wfDeprecated( __METHOD__ );
1767                 $nt = Title::newFromText( $title );
1768                 if ( $nt instanceof Title ) {
1769                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
1770                 } else {
1771                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "'.$title."\"\n" );
1772                         return $text == '' ? $title : $text;
1773                 }
1774         }
1775
1776         /**
1777          * @deprecated Use link()
1778          *
1779          * Make a link for a title which may or may not be in the database. If you need to
1780          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
1781          * call to this will result in a DB query.
1782          *
1783          * @param $nt     Title: the title object to make the link from, e.g. from
1784          *                      Title::newFromText.
1785          * @param $text  String: link text
1786          * @param $query String: optional query part
1787          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1788          *                      be included in the link text. Other characters will be appended after
1789          *                      the end of the link.
1790          * @param $prefix String: optional prefix. As trail, only before instead of after.
1791          */
1792         function makeLinkObj( $nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
1793                 wfProfileIn( __METHOD__ );
1794
1795                 $query = wfCgiToArray( $query );
1796                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1797                 if( $text === '' ) {
1798                         $text = $this->linkText( $nt );
1799                 }
1800
1801                 $ret = $this->link( $nt, "$prefix$text$inside", array(), $query ) . $trail;
1802
1803                 wfProfileOut( __METHOD__ );
1804                 return $ret;
1805         }
1806
1807         /**
1808          * @deprecated Use link()
1809          *
1810          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
1811          * it doesn't have to do a database query. It's also valid for interwiki titles and special
1812          * pages.
1813          *
1814          * @param $nt Title object of target page
1815          * @param $text   String: text to replace the title
1816          * @param $query  String: link target
1817          * @param $trail  String: text after link
1818          * @param $prefix String: text before link text
1819          * @param $aprops String: extra attributes to the a-element
1820          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
1821          * @return the a-element
1822          */
1823         function makeKnownLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
1824                 wfProfileIn( __METHOD__ );
1825
1826                 if ( $text == '' ) {
1827                         $text = $this->linkText( $title );
1828                 }
1829                 $attribs = Sanitizer::mergeAttributes(
1830                         Sanitizer::decodeTagAttributes( $aprops ),
1831                         Sanitizer::decodeTagAttributes( $style )
1832                 );
1833                 $query = wfCgiToArray( $query );
1834                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1835
1836                 $ret = $this->link( $title, "$prefix$text$inside", $attribs, $query,
1837                         array( 'known', 'noclasses' ) ) . $trail;
1838
1839                 wfProfileOut( __METHOD__ );
1840                 return $ret;
1841         }
1842
1843         /**
1844          * @deprecated Use link()
1845          *
1846          * Make a red link to the edit page of a given title.
1847          *
1848          * @param $nt Title object of the target page
1849          * @param $text  String: Link text
1850          * @param $query String: Optional query part
1851          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
1852          *                      be included in the link text. Other characters will be appended after
1853          *                      the end of the link.
1854          */
1855         function makeBrokenLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' ) {
1856                 wfProfileIn( __METHOD__ );
1857
1858                 list( $inside, $trail ) = Linker::splitTrail( $trail );
1859                 if( $text === '' ) {
1860                         $text = $this->linkText( $title );
1861                 }
1862                 $nt = $this->normaliseSpecialPage( $title );
1863
1864                 $ret = $this->link( $title, "$prefix$text$inside", array(),
1865                         wfCgiToArray( $query ), 'broken' ) . $trail;
1866
1867                 wfProfileOut( __METHOD__ );
1868                 return $ret;
1869         }
1870
1871         /**
1872          * @deprecated Use link()
1873          *
1874          * Make a brown link to a short article.
1875          *
1876          * @param $nt Title object of the target page
1877          * @param $text  String: link text
1878          * @param $query String: optional query part
1879          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
1880          *                      be included in the link text. Other characters will be appended after
1881          *                      the end of the link.
1882          */
1883         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
1884                 wfDeprecated( __METHOD__ );
1885                 return $this->makeColouredLinkObj( $nt, 'stub', $text, $query, $trail, $prefix );
1886         }
1887
1888         /**
1889          * @deprecated Use link()
1890          *
1891          * Make a coloured link.
1892          *
1893          * @param $nt Title object of the target page
1894          * @param $colour Integer: colour of the link
1895          * @param $text   String:  link text
1896          * @param $query  String:  optional query part
1897          * @param $trail  String:  optional trail. Alphabetic characters at the start of this string will
1898          *                      be included in the link text. Other characters will be appended after
1899          *                      the end of the link.
1900          */
1901         function makeColouredLinkObj( $nt, $colour, $text = '', $query = '', $trail = '', $prefix = '' ) {
1902                 if($colour != ''){
1903                         $style = $this->getInternalLinkAttributesObj( $nt, $text, $colour );
1904                 } else $style = '';
1905                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
1906         }
1907
1908         /** Obsolete alias */
1909         function makeImage( $url, $alt = '' ) {
1910                 wfDeprecated( __METHOD__ );
1911                 return $this->makeExternalImage( $url, $alt );
1912         }
1913
1914         /**
1915          * Creates the HTML source for images
1916          * @deprecated use makeImageLink2
1917          *
1918          * @param object $title
1919          * @param string $label label text
1920          * @param string $alt alt text
1921          * @param string $align horizontal alignment: none, left, center, right)
1922          * @param array $handlerParams Parameters to be passed to the media handler
1923          * @param boolean $framed shows image in original size in a frame
1924          * @param boolean $thumb shows image as thumbnail in a frame
1925          * @param string $manualthumb image name for the manual thumbnail
1926          * @param string $valign vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
1927          * @param string $time, timestamp of the file, set as false for current
1928          * @return string
1929          */
1930         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(), $framed = false,
1931           $thumb = false, $manualthumb = '', $valign = '', $time = false )
1932         {
1933                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
1934                 if ( $align ) {
1935                         $frameParams['align'] = $align;
1936                 }
1937                 if ( $framed ) {
1938                         $frameParams['framed'] = true;
1939                 }
1940                 if ( $thumb ) {
1941                         $frameParams['thumbnail'] = true;
1942                 }
1943                 if ( $manualthumb ) {
1944                         $frameParams['manualthumb'] = $manualthumb;
1945                 }
1946                 if ( $valign ) {
1947                         $frameParams['valign'] = $valign;
1948                 }
1949                 $file = wfFindFile( $title, array( 'time' => $time ) );
1950                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams, $time );
1951         }
1952
1953         /** @deprecated use Linker::makeMediaLinkObj() */
1954         function makeMediaLink( $name, $unused = '', $text = '', $time = false ) {
1955                 $nt = Title::makeTitleSafe( NS_FILE, $name );
1956                 return $this->makeMediaLinkObj( $nt, $text, $time );
1957         }
1958
1959         /**
1960          * Used to generate section edit links that point to "other" pages
1961          * (sections that are really part of included pages).
1962          *
1963          * @deprecated use Linker::doEditSectionLink()
1964          * @param $title Title string.
1965          * @param $section Integer: section number.
1966          */
1967         public function editSectionLinkForOther( $title, $section ) {
1968                 wfDeprecated( __METHOD__ );
1969                 $title = Title::newFromText( $title );
1970                 return $this->doEditSectionLink( $title, $section );
1971         }
1972
1973         /**
1974          * @deprecated use Linker::doEditSectionLink()
1975          * @param $nt Title object.
1976          * @param $section Integer: section number.
1977          * @param $hint Link String: title, or default if omitted or empty
1978          */
1979         public function editSectionLink( Title $nt, $section, $hint = '' ) {
1980                 wfDeprecated( __METHOD__ );
1981                 if( $hint === '' ) {
1982                         # No way to pass an actual empty $hint here!  The new interface al-
1983                         # lows this, so we have to do this for compatibility.
1984                         $hint = null;
1985                 }
1986                 return $this->doEditSectionLink( $nt, $section, $hint );
1987         }
1988
1989         /**
1990          * Returns the attributes for the tooltip and access key
1991          */
1992         public function tooltipAndAccesskeyAttribs( $name ) {
1993                 global $wgEnableTooltipsAndAccesskeys;
1994                 if ( !$wgEnableTooltipsAndAccesskeys )
1995                         return '';
1996                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
1997                 # no attribute" instead of "output '' as value for attribute", this
1998                 # would be three lines.
1999                 $attribs = array(
2000                         'title' => $this->titleAttrib( $name, 'withaccess' ),
2001                         'accesskey' => $this->accesskey( $name )
2002                 );
2003                 if ( $attribs['title'] === false ) {
2004                         unset( $attribs['title'] );
2005                 }
2006                 if ( $attribs['accesskey'] === false ) {
2007                         unset( $attribs['accesskey'] );
2008                 }
2009                 return $attribs;
2010         }
2011         /**
2012          * @deprecated Returns raw bits of HTML, use titleAttrib() and accesskey()
2013          */
2014         public function tooltipAndAccesskey( $name ) {
2015                 return Xml::expandAttributes( $this->tooltipAndAccesskeyAttribs( $name ) );
2016         }
2017
2018
2019         /** @deprecated Returns raw bits of HTML, use titleAttrib() */
2020         public function tooltip( $name, $options = null ) {
2021                 global $wgEnableTooltipsAndAccesskeys;
2022                 if ( !$wgEnableTooltipsAndAccesskeys )
2023                         return '';
2024                 # FIXME: If Sanitizer::expandAttributes() treated "false" as "output
2025                 # no attribute" instead of "output '' as value for attribute", this
2026                 # would be two lines.
2027                 $tooltip = $this->titleAttrib( $name, $options );
2028                 if ( $tooltip === false ) {
2029                         return '';
2030                 }
2031                 return Xml::expandAttributes( array(
2032                         'title' => $this->titleAttrib( $name, $options )
2033                 ) );
2034         }
2035 }