includes/Linker.php

   1 <?php
   2 /**
   3  * Split off some of the internal bits from Skin.php.
   4  * These functions are used for primarily page content:
   5  * links, embedded images, table of contents. Links are
   6  * also used in the skin.
   7  * For the moment, Skin is a descendent class of Linker.
   8  * In the future, it should probably be further split
   9  * so that ever other bit of the wiki doesn't have to
  10  * go loading up Skin to get at it.
  11  *
  12  * @addtogroup Skins
  13  */
  14 class Linker {
  15
  16         /**
  17          * Flags for userToolLinks()
  18          */
  19         const TOOL_LINKS_NOBLOCK = 1;
  20
  21         function __construct() {}
  22
  23         /**
  24          * @deprecated
  25          */
  26         function postParseLinkColour( $s = NULL ) {
  27                 return NULL;
  28         }
  29
  30         /** @todo document */
  31         function getExternalLinkAttributes( $link, $text, $class='' ) {
  32                 $link = htmlspecialchars( $link );
  33
  34                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  35
  36                 $r .= " title=\"{$link}\"";
  37                 return $r;
  38         }
  39
  40         function getInterwikiLinkAttributes( $link, $text, $class='' ) {
  41                 global $wgContLang;
  42
  43                 $link = urldecode( $link );
  44                 $link = $wgContLang->checkTitleEncoding( $link );
  45                 $link = preg_replace( '/[\\x00-\\x1f]/', ' ', $link );
  46                 $link = htmlspecialchars( $link );
  47
  48                 $r = ($class != '') ? " class=\"$class\"" : " class=\"external\"";
  49
  50                 $r .= " title=\"{$link}\"";
  51                 return $r;
  52         }
  53
  54         /** @todo document */
  55         function getInternalLinkAttributes( $link, $text, $class='' ) {
  56                 $link = urldecode( $link );
  57                 $link = str_replace( '_', ' ', $link );
  58                 $link = htmlspecialchars( $link );
  59                 $r = ($class != '') ? ' class="' . htmlspecialchars( $class ) . '"' : '';
  60                 $r .= " title=\"{$link}\"";
  61                 return $r;
  62         }
  63
  64         /**
  65          * @param $nt Title object.
  66          * @param $text String: FIXME
  67          * @param $class String: CSS class of the link, default ''.
  68          */
  69         function getInternalLinkAttributesObj( &$nt, $text, $class='' ) {
  70                 $r = ($class != '') ? ' class="' . htmlspecialchars( $class ) . '"' : '';
  71                 $r .= ' title="' . $nt->getEscapedText() . '"';
  72                 return $r;
  73         }
  74
  75         /**
  76          * Return the CSS colour of a known link
  77          *
  78          * @param mixed $s
  79          * @param integer $id
  80          * @param integer $threshold
  81          */
  82         function getLinkColour( $s, $threshold ) {
  83                 if( $threshold > 0 && $s!=false ) {
  84                         $colour = (     $s->page_len >= $threshold ||
  85                                         $s->page_is_redirect ||
  86                                         !Namespace::isContent( $s->page_namespace )
  87                             ? '' : 'stub' );
  88                 }
  89                 else {
  90                         $colour = '';
  91                 }
  92                 return $colour;
  93         }
  94
  95         /**
  96          * This function is a shortcut to makeLinkObj(Title::newFromText($title),...). Do not call
  97          * it if you already have a title object handy. See makeLinkObj for further documentation.
  98          *
  99          * @param $title String: the text of the title
 100          * @param $text  String: link text
 101          * @param $query String: optional query part
 102          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 103          *                      be included in the link text. Other characters will be appended after
 104          *                      the end of the link.
 105          */
 106         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
 107                 wfProfileIn( __METHOD__ );
 108                 $nt = Title::newFromText( $title );
 109                 if ( $nt instanceof Title ) {
 110                         $result = $this->makeLinkObj( $nt, $text, $query, $trail );
 111                 } else {
 112                         wfDebug( 'Invalid title passed to Linker::makeLink(): "'.$title."\"\n" );
 113                         $result = $text == "" ? $title : $text;
 114                 }
 115
 116                 wfProfileOut( __METHOD__ );
 117                 return $result;
 118         }
 119
 120         /**
 121          * This function is a shortcut to makeKnownLinkObj(Title::newFromText($title),...). Do not call
 122          * it if you already have a title object handy. See makeKnownLinkObj for further documentation.
 123          *
 124          * @param $title String: the text of the title
 125          * @param $text  String: link text
 126          * @param $query String: optional query part
 127          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 128          *                      be included in the link text. Other characters will be appended after
 129          *                      the end of the link.
 130          */
 131         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
 132                 $nt = Title::newFromText( $title );
 133                 if ( $nt instanceof Title ) {
 134                         return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix , $aprops );
 135                 } else {
 136                         wfDebug( 'Invalid title passed to Linker::makeKnownLink(): "'.$title."\"\n" );
 137                         return $text == '' ? $title : $text;
 138                 }
 139         }
 140
 141         /**
 142          * This function is a shortcut to makeBrokenLinkObj(Title::newFromText($title),...). Do not call
 143          * it if you already have a title object handy. See makeBrokenLinkObj for further documentation.
 144          *
 145          * @param string $title The text of the title
 146          * @param string $text Link text
 147          * @param string $query Optional query part
 148          * @param string $trail Optional trail. Alphabetic characters at the start of this string will
 149          *                      be included in the link text. Other characters will be appended after
 150          *                      the end of the link.
 151          */
 152         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
 153                 $nt = Title::newFromText( $title );
 154                 if ( $nt instanceof Title ) {
 155                         return $this->makeBrokenLinkObj( $nt, $text, $query, $trail );
 156                 } else {
 157                         wfDebug( 'Invalid title passed to Linker::makeBrokenLink(): "'.$title."\"\n" );
 158                         return $text == '' ? $title : $text;
 159                 }
 160         }
 161
 162         /**
 163          * @deprecated use makeColouredLinkObj
 164          *
 165          * This function is a shortcut to makeStubLinkObj(Title::newFromText($title),...). Do not call
 166          * it if you already have a title object handy. See makeStubLinkObj for further documentation.
 167          *
 168          * @param $title String: the text of the title
 169          * @param $text  String: link text
 170          * @param $query String: optional query part
 171          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 172          *                      be included in the link text. Other characters will be appended after
 173          *                      the end of the link.
 174          */
 175         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
 176                 $nt = Title::newFromText( $title );
 177                 if ( $nt instanceof Title ) {
 178                         return $this->makeStubLinkObj( $nt, $text, $query, $trail );
 179                 } else {
 180                         wfDebug( 'Invalid title passed to Linker::makeStubLink(): "'.$title."\"\n" );
 181                         return $text == '' ? $title : $text;
 182                 }
 183         }
 184
 185         /**
 186          * Make a link for a title which may or may not be in the database. If you need to
 187          * call this lots of times, pre-fill the link cache with a LinkBatch, otherwise each
 188          * call to this will result in a DB query.
 189          *
 190          * @param $nt     Title: the title object to make the link from, e.g. from
 191          *                      Title::newFromText.
 192          * @param $text  String: link text
 193          * @param $query String: optional query part
 194          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 195          *                      be included in the link text. Other characters will be appended after
 196          *                      the end of the link.
 197          * @param $prefix String: optional prefix. As trail, only before instead of after.
 198          */
 199         function makeLinkObj( $nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
 200                 global $wgUser;
 201                 wfProfileIn( __METHOD__ );
 202
 203                 if ( !$nt instanceof Title ) {
 204                         # Fail gracefully
 205                         wfProfileOut( __METHOD__ );
 206                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 207                 }
 208
 209                 if ( $nt->isExternal() ) {
 210                         $u = $nt->getFullURL();
 211                         $link = $nt->getPrefixedURL();
 212                         if ( '' == $text ) { $text = $nt->getPrefixedText(); }
 213                         $style = $this->getInterwikiLinkAttributes( $link, $text, 'extiw' );
 214
 215                         $inside = '';
 216                         if ( '' != $trail ) {
 217                                 $m = array();
 218                                 if ( preg_match( '/^([a-z]+)(.*)$$/sD', $trail, $m ) ) {
 219                                         $inside = $m[1];
 220                                         $trail = $m[2];
 221                                 }
 222                         }
 223                         $t = "<a href=\"{$u}\"{$style}>{$text}{$inside}</a>";
 224
 225                         wfProfileOut( __METHOD__ );
 226                         return $t;
 227                 } elseif ( $nt->isAlwaysKnown() ) {
 228                         # Image links, special page links and self-links with fragements are always known.
 229                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 230                 } else {
 231                         wfProfileIn( __METHOD__.'-immediate' );
 232
 233                         # Handles links to special pages wich do not exist in the database:
 234                         if( $nt->getNamespace() == NS_SPECIAL ) {
 235                                 if( SpecialPage::exists( $nt->getDBkey() ) ) {
 236                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 237                                 } else {
 238                                         $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 239                                 }
 240                                 wfProfileOut( __METHOD__.'-immediate' );
 241                                 wfProfileOut( __METHOD__ );
 242                                 return $retVal;
 243                         }
 244
 245                         # Work out link colour immediately
 246                         $aid = $nt->getArticleID() ;
 247                         if ( 0 == $aid ) {
 248                                 $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 249                         } else {
 250                                 $colour = '';
 251                                 if ( $nt->isContentPage() ) {
 252                                         $threshold = $wgUser->getOption('stubthreshold');
 253                                         if ( $threshold > 0 ) {
 254                                                 $dbr = wfGetDB( DB_SLAVE );
 255                                                 $s = $dbr->selectRow(
 256                                                         array( 'page' ),
 257                                                         array( 'page_len', 'page_is_redirect', 'page_namespace' ),
 258                                                         array( 'page_id' => $aid ), __METHOD__ ) ;
 259                                                 $colour = $this->getLinkColour( $s, $threshold );
 260                                         }
 261                                 }
 262                                 $retVal = $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 263                         }
 264                         wfProfileOut( __METHOD__.'-immediate' );
 265                 }
 266                 wfProfileOut( __METHOD__ );
 267                 return $retVal;
 268         }
 269
 270         /**
 271          * Make a link for a title which definitely exists. This is faster than makeLinkObj because
 272          * it doesn't have to do a database query. It's also valid for interwiki titles and special
 273          * pages.
 274          *
 275          * @param $nt Title object of target page
 276          * @param $text   String: text to replace the title
 277          * @param $query  String: link target
 278          * @param $trail  String: text after link
 279          * @param $prefix String: text before link text
 280          * @param $aprops String: extra attributes to the a-element
 281          * @param $style  String: style to apply - if empty, use getInternalLinkAttributesObj instead
 282          * @return the a-element
 283          */
 284         function makeKnownLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '', $style = '' ) {
 285                 wfProfileIn( __METHOD__ );
 286
 287                 if ( !$nt instanceof Title ) {
 288                         # Fail gracefully
 289                         wfProfileOut( __METHOD__ );
 290                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 291                 }
 292
 293                 $u = $nt->escapeLocalURL( $query );
 294                 if ( $nt->getFragment() != '' ) {
 295                         if( $nt->getPrefixedDbkey() == '' ) {
 296                                 $u = '';
 297                                 if ( '' == $text ) {
 298                                         $text = htmlspecialchars( $nt->getFragment() );
 299                                 }
 300                         }
 301                         $u .= $nt->getFragmentForURL();
 302                 }
 303                 if ( $text == '' ) {
 304                         $text = htmlspecialchars( $nt->getPrefixedText() );
 305                 }
 306                 if ( $style == '' ) {
 307                         $style = $this->getInternalLinkAttributesObj( $nt, $text );
 308                 }
 309
 310                 if ( $aprops !== '' ) $aprops = ' ' . $aprops;
 311
 312                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 313                 $r = "<a href=\"{$u}\"{$style}{$aprops}>{$prefix}{$text}{$inside}</a>{$trail}";
 314                 wfProfileOut( __METHOD__ );
 315                 return $r;
 316         }
 317
 318         /**
 319          * Make a red link to the edit page of a given title.
 320          *
 321          * @param $nt Title object of the target page
 322          * @param $text  String: Link text
 323          * @param $query String: Optional query part
 324          * @param $trail String: Optional trail. Alphabetic characters at the start of this string will
 325          *                      be included in the link text. Other characters will be appended after
 326          *                      the end of the link.
 327          */
 328         function makeBrokenLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 329                 wfProfileIn( __METHOD__ );
 330
 331                 if ( !$nt instanceof Title ) {
 332                         # Fail gracefully
 333                         wfProfileOut( __METHOD__ );
 334                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 335                 }
 336
 337                 if( $nt->getNamespace() == NS_SPECIAL ) {
 338                         $q = $query;
 339                 } else if ( '' == $query ) {
 340                         $q = 'action=edit';
 341                 } else {
 342                         $q = 'action=edit&'.$query;
 343                 }
 344                 $u = $nt->escapeLocalURL( $q );
 345
 346                 if ( '' == $text ) {
 347                         $text = htmlspecialchars( $nt->getPrefixedText() );
 348                 }
 349                 $style = $this->getInternalLinkAttributesObj( $nt, $text, 'new' );
 350
 351                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 352                 $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 353
 354                 wfProfileOut( __METHOD__ );
 355                 return $s;
 356         }
 357
 358         /**
 359          * @deprecated use makeColouredLinkObj
 360          *
 361          * Make a brown link to a short article.
 362          *
 363          * @param $nt Title object of the target page
 364          * @param $text  String: link text
 365          * @param $query String: optional query part
 366          * @param $trail String: optional trail. Alphabetic characters at the start of this string will
 367          *                      be included in the link text. Other characters will be appended after
 368          *                      the end of the link.
 369          */
 370         function makeStubLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 371                 return $this->makeColouredLinkObj( $nt, 'stub', $text, $query, $trail, $prefix );
 372         }
 373
 374         /**
 375          * Make a coloured link.
 376          *
 377          * @param $nt Title object of the target page
 378          * @param $colour Integer: colour of the link
 379          * @param $text   String:  link text
 380          * @param $query  String:  optional query part
 381          * @param $trail  String:  optional trail. Alphabetic characters at the start of this string will
 382          *                      be included in the link text. Other characters will be appended after
 383          *                      the end of the link.
 384          */
 385         function makeColouredLinkObj( $nt, $colour, $text = '', $query = '', $trail = '', $prefix = '' ) {
 386
 387                 if($colour != ''){
 388                         $style = $this->getInternalLinkAttributesObj( $nt, $text, $colour );
 389                 } else $style = '';
 390                 return $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix, '', $style );
 391         }
 392
 393         /**
 394          * Generate either a normal exists-style link or a stub link, depending
 395          * on the given page size.
 396          *
 397          * @param $size Integer
 398          * @param $nt Title object.
 399          * @param $text String
 400          * @param $query String
 401          * @param $trail String
 402          * @param $prefix String
 403          * @return string HTML of link
 404          */
 405         function makeSizeLinkObj( $size, $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 406                 global $wgUser;
 407                 $threshold = intval( $wgUser->getOption( 'stubthreshold' ) );
 408                 $colour = ( $size < $threshold ) ? 'stub' : '';
 409                 return $this->makeColouredLinkObj( $nt, $colour, $text, $query, $trail, $prefix );
 410         }
 411
 412         /**
 413          * Make appropriate markup for a link to the current article. This is currently rendered
 414          * as the bold link text. The calling sequence is the same as the other make*LinkObj functions,
 415          * despite $query not being used.
 416          */
 417         function makeSelfLinkObj( $nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 418                 if ( '' == $text ) {
 419                         $text = htmlspecialchars( $nt->getPrefixedText() );
 420                 }
 421                 list( $inside, $trail ) = Linker::splitTrail( $trail );
 422                 return "<strong class=\"selflink\">{$prefix}{$text}{$inside}</strong>{$trail}";
 423         }
 424
 425         /** @todo document */
 426         function fnamePart( $url ) {
 427                 $basename = strrchr( $url, '/' );
 428                 if ( false === $basename ) {
 429                         $basename = $url;
 430                 } else {
 431                         $basename = substr( $basename, 1 );
 432                 }
 433                 return htmlspecialchars( $basename );
 434         }
 435
 436         /** Obsolete alias */
 437         function makeImage( $url, $alt = '' ) {
 438                 return $this->makeExternalImage( $url, $alt );
 439         }
 440
 441         /** @todo document */
 442         function makeExternalImage( $url, $alt = '' ) {
 443                 if ( '' == $alt ) {
 444                         $alt = $this->fnamePart( $url );
 445                 }
 446                 $s = '<img src="'.$url.'" alt="'.$alt.'" />';
 447                 return $s;
 448         }
 449
 450         /**
 451          * Creates the HTML source for images
 452          * @deprecated use makeImageLink2
 453          *
 454          * @param object $title
 455          * @param string $label label text
 456          * @param string $alt alt text
 457          * @param string $align horizontal alignment: none, left, center, right)
 458          * @param array $handlerParams Parameters to be passed to the media handler
 459          * @param boolean $framed shows image in original size in a frame
 460          * @param boolean $thumb shows image as thumbnail in a frame
 461          * @param string $manualthumb image name for the manual thumbnail
 462          * @param string $valign vertical alignment: baseline, sub, super, top, text-top, middle, bottom, text-bottom
 463          * @return string
 464          */
 465         function makeImageLinkObj( $title, $label, $alt, $align = '', $handlerParams = array(), $framed = false,
 466           $thumb = false, $manualthumb = '', $valign = '', $time = false )
 467         {
 468                 $frameParams = array( 'alt' => $alt, 'caption' => $label );
 469                 if ( $align ) {
 470                         $frameParams['align'] = $align;
 471                 }
 472                 if ( $framed ) {
 473                         $frameParams['framed'] = true;
 474                 }
 475                 if ( $thumb ) {
 476                         $frameParams['thumbnail'] = true;
 477                 }
 478                 if ( $manualthumb ) {
 479                         $frameParams['manualthumb'] = $manualthumb;
 480                 }
 481                 if ( $valign ) {
 482                         $frameParams['valign'] = $valign;
 483                 }
 484                 $file = wfFindFile( $title, $time );
 485                 return $this->makeImageLink2( $title, $file, $frameParams, $handlerParams );
 486         }
 487
 488         /**
 489          * Make an image link
 490          * @param Title $title Title object
 491          * @param File $file File object, or false if it doesn't exist
 492          *
 493          * @param array $frameParams Associative array of parameters external to the media handler.
 494          *     Boolean parameters are indicated by presence or absence, the value is arbitrary and
 495          *     will often be false.
 496          *          thumbnail       If present, downscale and frame
 497          *          manualthumb     Image name to use as a thumbnail, instead of automatic scaling
 498          *          framed          Shows image in original size in a frame
 499          *          frameless       Downscale but don't frame
 500          *          upright         If present, tweak default sizes for portrait orientation
 501          *          upright_factor  Fudge factor for "upright" tweak (default 0.75)
 502          *          border          If present, show a border around the image
 503          *          align           Horizontal alignment (left, right, center, none)
 504          *          valign          Vertical alignment (baseline, sub, super, top, text-top, middle,
 505          *                          bottom, text-bottom)
 506          *          alt             Alternate text for image (i.e. alt attribute). Plain text.
 507          *          caption         HTML for image caption.
 508          *
 509          * @param array $handlerParams Associative array of media handler parameters, to be passed
 510          *       to transform(). Typical keys are "width" and "page".
 511          */
 512         function makeImageLink2( Title $title, $file, $frameParams = array(), $handlerParams = array() ) {
 513                 global $wgContLang, $wgUser, $wgThumbLimits, $wgThumbUpright;
 514                 if ( $file && !$file->allowInlineDisplay() ) {
 515                         wfDebug( __METHOD__.': '.$title->getPrefixedDBkey()." does not allow inline display\n" );
 516                         return $this->makeKnownLinkObj( $title );
 517                 }
 518
 519                 // Shortcuts
 520                 $fp =& $frameParams;
 521                 $hp =& $handlerParams;
 522
 523                 // Clean up parameters
 524                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 525                 if ( !isset( $fp['align'] ) ) $fp['align'] = '';
 526                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 527
 528                 $prefix = $postfix = '';
 529
 530                 if ( 'center' == $fp['align'] )
 531                 {
 532                         $prefix  = '<div class="center">';
 533                         $postfix = '</div>';
 534                         $fp['align']   = 'none';
 535                 }
 536                 if ( $file && !isset( $hp['width'] ) ) {
 537                         $hp['width'] = $file->getWidth( $page );
 538
 539                         if( isset( $fp['thumbnail'] ) || isset( $fp['framed'] ) || isset( $fp['frameless'] ) || !$hp['width'] ) {
 540                                 $wopt = $wgUser->getOption( 'thumbsize' );
 541
 542                                 if( !isset( $wgThumbLimits[$wopt] ) ) {
 543                                          $wopt = User::getDefaultOption( 'thumbsize' );
 544                                 }
 545
 546                                 // Reduce width for upright images when parameter 'upright' is used
 547                                 if ( isset( $fp['upright'] ) && $fp['upright'] == 0 ) {
 548                                         $fp['upright'] = $wgThumbUpright;
 549                                 }
 550                                 // Use width which is smaller: real image width or user preference width
 551                                 // 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
 552                                 $prefWidth = isset( $fp['upright'] ) ?
 553                                         round( $wgThumbLimits[$wopt] * $fp['upright'], -1 ) :
 554                                         $wgThumbLimits[$wopt];
 555                                 if ( $hp['width'] <= 0 || $prefWidth < $hp['width'] ) {
 556                                         $hp['width'] = $prefWidth;
 557                                 }
 558                         }
 559                 }
 560
 561                 if ( isset( $fp['thumbnail'] ) || isset( $fp['manualthumb'] ) || isset( $fp['framed'] ) ) {
 562
 563                         # Create a thumbnail. Alignment depends on language
 564                         # writing direction, # right aligned for left-to-right-
 565                         # languages ("Western languages"), left-aligned
 566                         # for right-to-left-languages ("Semitic languages")
 567                         #
 568                         # If  thumbnail width has not been provided, it is set
 569                         # to the default user option as specified in Language*.php
 570                         if ( $fp['align'] == '' ) {
 571                                 $fp['align'] = $wgContLang->isRTL() ? 'left' : 'right';
 572                         }
 573                         return $prefix.$this->makeThumbLink2( $title, $file, $fp, $hp ).$postfix;
 574                 }
 575
 576                 if ( $file && isset( $fp['frameless'] ) ) {
 577                         $srcWidth = $file->getWidth( $page );
 578                         # For "frameless" option: do not present an image bigger than the source (for bitmap-style images)
 579                         # This is the same behaviour as the "thumb" option does it already.
 580                         if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 581                                 $hp['width'] = $srcWidth;
 582                         }
 583                 }
 584
 585                 if ( $file && $hp['width'] ) {
 586                         # Create a resized image, without the additional thumbnail features
 587                         $thumb = $file->transform( $hp );
 588                 } else {
 589                         $thumb = false;
 590                 }
 591
 592                 if ( !$thumb ) {
 593                         $s = $this->makeBrokenImageLinkObj( $title );
 594                 } else {
 595                         $s = $thumb->toHtml( array(
 596                                 'desc-link' => true,
 597                                 'alt' => $fp['alt'],
 598                                 'valign' => isset( $fp['valign'] ) ? $fp['valign'] : false ,
 599                                 'img-class' => isset( $fp['border'] ) ? 'thumbborder' : false ) );
 600                 }
 601                 if ( '' != $fp['align'] ) {
 602                         $s = "<div class=\"float{$fp['align']}\"><span>{$s}</span></div>";
 603                 }
 604                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 605         }
 606
 607         /**
 608          * Make HTML for a thumbnail including image, border and caption
 609          * @param Title $title
 610          * @param File $file File object or false if it doesn't exist
 611          */
 612         function makeThumbLinkObj( Title $title, $file, $label = '', $alt, $align = 'right', $params = array(), $framed=false , $manualthumb = "" ) {
 613                 $frameParams = array(
 614                         'alt' => $alt,
 615                         'caption' => $label,
 616                         'align' => $align
 617                 );
 618                 if ( $framed ) $frameParams['framed'] = true;
 619                 if ( $manualthumb ) $frameParams['manualthumb'] = $manualthumb;
 620                 return $this->makeThumbLink2( $title, $file, $frameParams, $params );
 621         }
 622
 623         function makeThumbLink2( Title $title, $file, $frameParams = array(), $handlerParams = array() ) {
 624                 global $wgStylePath, $wgContLang;
 625                 $exists = $file && $file->exists();
 626
 627                 # Shortcuts
 628                 $fp =& $frameParams;
 629                 $hp =& $handlerParams;
 630
 631                 $page = isset( $hp['page'] ) ? $hp['page'] : false;
 632                 if ( !isset( $fp['align'] ) ) $fp['align'] = 'right';
 633                 if ( !isset( $fp['alt'] ) ) $fp['alt'] = '';
 634                 if ( !isset( $fp['caption'] ) ) $fp['caption'] = '';
 635
 636                 if ( empty( $hp['width'] ) ) {
 637                         // Reduce width for upright images when parameter 'upright' is used
 638                         $hp['width'] = isset( $fp['upright'] ) ? 130 : 180;
 639                 }
 640                 $thumb = false;
 641
 642                 if ( !$exists ) {
 643                         $outerWidth = $hp['width'] + 2;
 644                 } else {
 645                         if ( isset( $fp['manualthumb'] ) ) {
 646                                 # Use manually specified thumbnail
 647                                 $manual_title = Title::makeTitleSafe( NS_IMAGE, $fp['manualthumb'] );
 648                                 if( $manual_title ) {
 649                                         $manual_img = wfFindFile( $manual_title );
 650                                         if ( $manual_img ) {
 651                                                 $thumb = $manual_img->getUnscaledThumb();
 652                                         } else {
 653                                                 $exists = false;
 654                                         }
 655                                 }
 656                         } elseif ( isset( $fp['framed'] ) ) {
 657                                 // Use image dimensions, don't scale
 658                                 $thumb = $file->getUnscaledThumb( $page );
 659                         } else {
 660                                 # Do not present an image bigger than the source, for bitmap-style images
 661                                 # This is a hack to maintain compatibility with arbitrary pre-1.10 behaviour
 662                                 $srcWidth = $file->getWidth( $page );
 663                                 if ( $srcWidth && !$file->mustRender() && $hp['width'] > $srcWidth ) {
 664                                         $hp['width'] = $srcWidth;
 665                                 }
 666                                 $thumb = $file->transform( $hp );
 667                         }
 668
 669                         if ( $thumb ) {
 670                                 $outerWidth = $thumb->getWidth() + 2;
 671                         } else {
 672                                 $outerWidth = $hp['width'] + 2;
 673                         }
 674                 }
 675
 676                 $query = $page ? 'page=' . urlencode( $page ) : '';
 677                 $url = $title->getLocalURL( $query );
 678
 679                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 680                 $magnifyalign = $wgContLang->isRTL() ? 'left' : 'right';
 681                 $textalign = $wgContLang->isRTL() ? ' style="text-align:right"' : '';
 682
 683                 $s = "<div class=\"thumb t{$fp['align']}\"><div class=\"thumbinner\" style=\"width:{$outerWidth}px;\">";
 684                 if( !$exists ) {
 685                         $s .= $this->makeBrokenImageLinkObj( $title );
 686                         $zoomicon = '';
 687                 } elseif ( !$thumb ) {
 688                         $s .= htmlspecialchars( wfMsg( 'thumbnail_error', '' ) );
 689                         $zoomicon = '';
 690                 } else {
 691                         $s .= $thumb->toHtml( array(
 692                                 'alt' => $fp['alt'],
 693                                 'img-class' => 'thumbimage',
 694                                 'desc-link' => true ) );
 695                         if ( isset( $fp['framed'] ) ) {
 696                                 $zoomicon="";
 697                         } else {
 698                                 $zoomicon =  '<div class="magnify" style="float:'.$magnifyalign.'">'.
 699                                         '<a href="'.$url.'" class="internal" title="'.$more.'">'.
 700                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 701                                         'width="15" height="11" alt="" /></a></div>';
 702                         }
 703                 }
 704                 $s .= '  <div class="thumbcaption"'.$textalign.'>'.$zoomicon.$fp['caption']."</div></div></div>";
 705                 return str_replace("\n", ' ', $s);
 706         }
 707
 708         /**
 709          * Make a "broken" link to an image
 710          *
 711          * @param Title $title Image title
 712          * @param string $text Link label
 713          * @param string $query Query string
 714          * @param string $trail Link trail
 715          * @param string $prefix Link prefix
 716          * @return string
 717          */
 718         public function makeBrokenImageLinkObj( $title, $text = '', $query = '', $trail = '', $prefix = '' ) {
 719                 global $wgEnableUploads;
 720                 if( $title instanceof Title ) {
 721                         wfProfileIn( __METHOD__ );
 722                         if( $wgEnableUploads ) {
 723                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 724                                 if( $text == '' )
 725                                         $text = htmlspecialchars( $title->getPrefixedText() );
 726                                 $redir = RepoGroup::singleton()->getLocalRepo()->checkRedirect( $title );
 727                                 if( $redir ) {
 728                                         return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 729                                 }
 730                                 $q = 'wpDestFile=' . $title->getPartialUrl();
 731                                 if( $query != '' )
 732                                         $q .= '&' . $query;
 733                                 list( $inside, $trail ) = self::splitTrail( $trail );
 734                                 $style = $this->getInternalLinkAttributesObj( $title, $text, 'new' );
 735                                 wfProfileOut( __METHOD__ );
 736                                 return '<a href="' . $upload->escapeLocalUrl( $q ) . '"'
 737                                         . $style . '>' . $prefix . $text . $inside . '</a>' . $trail;
 738                         } else {
 739                                 wfProfileOut( __METHOD__ );
 740                                 return $this->makeKnownLinkObj( $title, $text, $query, $trail, $prefix );
 741                         }
 742                 } else {
 743                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 744                 }
 745         }
 746
 747         /** @deprecated use Linker::makeMediaLinkObj() */
 748         function makeMediaLink( $name, $unused = '', $text = '' ) {
 749                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 750                 return $this->makeMediaLinkObj( $nt, $text );
 751         }
 752
 753         /**
 754          * Create a direct link to a given uploaded file.
 755          *
 756          * @param $title Title object.
 757          * @param $text  String: pre-sanitized HTML
 758          * @return string HTML
 759          *
 760          * @public
 761          * @todo Handle invalid or missing images better.
 762          */
 763         function makeMediaLinkObj( $title, $text = '' ) {
 764                 if( is_null( $title ) ) {
 765                         ### HOTFIX. Instead of breaking, return empty string.
 766                         return $text;
 767                 } else {
 768                         $img  = wfFindFile( $title );
 769                         if( $img ) {
 770                                 $url  = $img->getURL();
 771                                 $class = 'internal';
 772                         } else {
 773                                 $upload = SpecialPage::getTitleFor( 'Upload' );
 774                                 $url = $upload->getLocalUrl( 'wpDestFile=' . urlencode( $title->getDBkey() ) );
 775                                 $class = 'new';
 776                         }
 777                         $alt = htmlspecialchars( $title->getText() );
 778                         if( $text == '' ) {
 779                                 $text = $alt;
 780                         }
 781                         $u = htmlspecialchars( $url );
 782                         return "<a href=\"{$u}\" class=\"$class\" title=\"{$alt}\">{$text}</a>";
 783                 }
 784         }
 785
 786         /** @todo document */
 787         function specialLink( $name, $key = '' ) {
 788                 global $wgContLang;
 789
 790                 if ( '' == $key ) { $key = strtolower( $name ); }
 791                 $pn = $wgContLang->ucfirst( $name );
 792                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 793                   wfMsg( $key ) );
 794         }
 795
 796         /** @todo document */
 797         function makeExternalLink( $url, $text, $escape = true, $linktype = '', $ns = null ) {
 798                 $style = $this->getExternalLinkAttributes( $url, $text, 'external ' . $linktype );
 799                 global $wgNoFollowLinks, $wgNoFollowNsExceptions;
 800                 if( $wgNoFollowLinks && !(isset($ns) && in_array($ns, $wgNoFollowNsExceptions)) ) {
 801                         $style .= ' rel="nofollow"';
 802                 }
 803                 $url = htmlspecialchars( $url );
 804                 if( $escape ) {
 805                         $text = htmlspecialchars( $text );
 806                 }
 807                 return '<a href="'.$url.'"'.$style.'>'.$text.'</a>';
 808         }
 809
 810         /**
 811          * Make user link (or user contributions for unregistered users)
 812          * @param $userId   Integer: user id in database.
 813          * @param $userText String: user name in database
 814          * @return string HTML fragment
 815          * @private
 816          */
 817         function userLink( $userId, $userText ) {
 818                 $encName = htmlspecialchars( $userText );
 819                 if( $userId == 0 ) {
 820                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 821                         return $this->makeKnownLinkObj( $contribsPage,
 822                                 $encName);
 823                 } else {
 824                         $userPage = Title::makeTitle( NS_USER, $userText );
 825                         return $this->makeLinkObj( $userPage, $encName );
 826                 }
 827         }
 828
 829         /**
 830          * Generate standard user tool links (talk, contributions, block link, etc.)
 831          *
 832          * @param int $userId User identifier
 833          * @param string $userText User name or IP address
 834          * @param bool $redContribsWhenNoEdits Should the contributions link be red if the user has no edits?
 835          * @param int $flags Customisation flags (e.g. self::TOOL_LINKS_NOBLOCK)
 836          * @return string
 837          */
 838         public function userToolLinks( $userId, $userText, $redContribsWhenNoEdits = false, $flags = 0 ) {
 839                 global $wgUser, $wgDisableAnonTalk, $wgSysopUserBans;
 840                 $talkable = !( $wgDisableAnonTalk && 0 == $userId );
 841                 $blockable = ( $wgSysopUserBans || 0 == $userId ) && !$flags & self::TOOL_LINKS_NOBLOCK;
 842
 843                 $items = array();
 844                 if( $talkable ) {
 845                         $items[] = $this->userTalkLink( $userId, $userText );
 846                 }
 847                 if( $userId ) {
 848                         // check if the user has an edit
 849                         if( $redContribsWhenNoEdits && User::edits( $userId ) == 0 ) {
 850                                 $style = " class='new'";
 851                         } else {
 852                                 $style = '';
 853                         }
 854                         $contribsPage = SpecialPage::getTitleFor( 'Contributions', $userText );
 855
 856                         $items[] = $this->makeKnownLinkObj( $contribsPage, wfMsgHtml( 'contribslink' ), '', '', '', '', $style );
 857                 }
 858                 if( $blockable && $wgUser->isAllowed( 'block' ) ) {
 859                         $items[] = $this->blockLink( $userId, $userText );
 860                 }
 861
 862                 if( $items ) {
 863                         return ' (' . implode( ' | ', $items ) . ')';
 864                 } else {
 865                         return '';
 866                 }
 867         }
 868
 869         /**
 870          * Alias for userToolLinks( $userId, $userText, true );
 871          */
 872         public function userToolLinksRedContribs( $userId, $userText ) {
 873                 return $this->userToolLinks( $userId, $userText, true );
 874         }
 875
 876
 877         /**
 878          * @param $userId Integer: user id in database.
 879          * @param $userText String: user name in database.
 880          * @return string HTML fragment with user talk link
 881          * @private
 882          */
 883         function userTalkLink( $userId, $userText ) {
 884                 $userTalkPage = Title::makeTitle( NS_USER_TALK, $userText );
 885                 $userTalkLink = $this->makeLinkObj( $userTalkPage, wfMsgHtml( 'talkpagelinktext' ) );
 886                 return $userTalkLink;
 887         }
 888
 889         /**
 890          * @param $userId Integer: userid
 891          * @param $userText String: user name in database.
 892          * @return string HTML fragment with block link
 893          * @private
 894          */
 895         function blockLink( $userId, $userText ) {
 896                 $blockPage = SpecialPage::getTitleFor( 'Blockip', $userText );
 897                 $blockLink = $this->makeKnownLinkObj( $blockPage,
 898                         wfMsgHtml( 'blocklink' ) );
 899                 return $blockLink;
 900         }
 901
 902         /**
 903          * Generate a user link if the current user is allowed to view it
 904          * @param $rev Revision object.
 905          * @return string HTML
 906          */
 907         function revUserLink( $rev ) {
 908                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 909                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() );
 910                 } else {
 911                         $link = wfMsgHtml( 'rev-deleted-user' );
 912                 }
 913                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 914                         return '<span class="history-deleted">' . $link . '</span>';
 915                 }
 916                 return $link;
 917         }
 918
 919         /**
 920          * Generate a user tool link cluster if the current user is allowed to view it
 921          * @param $rev Revision object.
 922          * @return string HTML
 923          */
 924         function revUserTools( $rev ) {
 925                 if( $rev->userCan( Revision::DELETED_USER ) ) {
 926                         $link = $this->userLink( $rev->getRawUser(), $rev->getRawUserText() ) .
 927                                 ' ' .
 928                                 $this->userToolLinks( $rev->getRawUser(), $rev->getRawUserText() );
 929                 } else {
 930                         $link = wfMsgHtml( 'rev-deleted-user' );
 931                 }
 932                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 933                         return '<span class="history-deleted">' . $link . '</span>';
 934                 }
 935                 return $link;
 936         }
 937
 938         /**
 939          * This function is called by all recent changes variants, by the page history,
 940          * and by the user contributions list. It is responsible for formatting edit
 941          * comments. It escapes any HTML in the comment, but adds some CSS to format
 942          * auto-generated comments (from section editing) and formats [[wikilinks]].
 943          *
 944          * @author Erik Moeller <moeller@scireview.de>
 945          *
 946          * Note: there's not always a title to pass to this function.
 947          * Since you can't set a default parameter for a reference, I've turned it
 948          * temporarily to a value pass. Should be adjusted further. --brion
 949          *
 950          * @param string $comment
 951          * @param mixed $title Title object (to generate link to the section in autocomment) or null
 952          * @param bool $local Whether section links should refer to local page
 953          */
 954         function formatComment($comment, $title = NULL, $local = false) {
 955                 wfProfileIn( __METHOD__ );
 956
 957                 # Sanitize text a bit:
 958                 $comment = str_replace( "\n", " ", $comment );
 959                 $comment = htmlspecialchars( $comment );
 960
 961                 # Render autocomments and make links:
 962                 $comment = $this->formatAutoComments( $comment, $title, $local );
 963                 $comment = $this->formatLinksInComment( $comment );
 964
 965                 wfProfileOut( __METHOD__ );
 966                 return $comment;
 967         }
 968
 969         /**
 970          * The pattern for autogen comments is / * foo * /, which makes for
 971          * some nasty regex.
 972          * We look for all comments, match any text before and after the comment,
 973          * add a separator where needed and format the comment itself with CSS
 974          * Called by Linker::formatComment.
 975          *
 976          * @param $comment Comment text
 977          * @param $title An optional title object used to links to sections
 978          *
 979          * @todo Document the $local parameter.
 980          */
 981         private function formatAutocomments( $comment, $title = NULL, $local = false ) {
 982                 $match = array();
 983                 while (preg_match('!(.*)/\*\s*(.*?)\s*\*/(.*)!', $comment,$match)) {
 984                         $pre=$match[1];
 985                         $auto=$match[2];
 986                         $post=$match[3];
 987                         $link='';
 988                         if( $title ) {
 989                                 $section = $auto;
 990
 991                                 # Generate a valid anchor name from the section title.
 992                                 # Hackish, but should generally work - we strip wiki
 993                                 # syntax, including the magic [[: that is used to
 994                                 # "link rather than show" in case of images and
 995                                 # interlanguage links.
 996                                 $section = str_replace( '[[:', '', $section );
 997                                 $section = str_replace( '[[', '', $section );
 998                                 $section = str_replace( ']]', '', $section );
 999                                 if ( $local ) {
1000                                         $sectionTitle = Title::newFromText( '#' . $section);
1001                                 } else {
1002                                         $sectionTitle = wfClone( $title );
1003                                         $sectionTitle->mFragment = $section;
1004                                 }
1005                                 $link = $this->makeKnownLinkObj( $sectionTitle, wfMsg( 'sectionlink' ) );
1006                         }
1007                         $sep='-';
1008                         $auto=$link.$auto;
1009                         if($pre) { $auto = $sep.' '.$auto; }
1010                         if($post) { $auto .= ' '.$sep; }
1011                         $auto='<span class="autocomment">'.$auto.'</span>';
1012                         $comment=$pre.$auto.$post;
1013                 }
1014
1015                 return $comment;
1016         }
1017
1018         /**
1019          * Formats wiki links and media links in text; all other wiki formatting
1020          * is ignored
1021          *
1022          * @fixme doesn't handle sub-links as in image thumb texts like the main parser
1023          * @param string $comment Text to format links in
1024          * @return string
1025          */
1026         public function formatLinksInComment( $comment ) {
1027                 return preg_replace_callback(
1028                         '/\[\[:?(.*?)(\|(.*?))*\]\]([^[]*)/',
1029                         array( $this, 'formatLinksInCommentCallback' ),
1030                         $comment );
1031         }
1032
1033         protected function formatLinksInCommentCallback( $match ) {
1034                 global $wgContLang;
1035
1036                 $medians = '(?:' . preg_quote( Namespace::getCanonicalName( NS_MEDIA ), '/' ) . '|';
1037                 $medians .= preg_quote( $wgContLang->getNsText( NS_MEDIA ), '/' ) . '):';
1038
1039                 $comment = $match[0];
1040
1041                 # Handle link renaming [[foo|text]] will show link as "text"
1042                 if( "" != $match[3] ) {
1043                         $text = $match[3];
1044                 } else {
1045                         $text = $match[1];
1046                 }
1047                 $submatch = array();
1048                 if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
1049                         # Media link; trail not supported.
1050                         $linkRegexp = '/\[\[(.*?)\]\]/';
1051                         $thelink = $this->makeMediaLink( $submatch[1], "", $text );
1052                 } else {
1053                         # Other kind of link
1054                         if( preg_match( $wgContLang->linkTrail(), $match[4], $submatch ) ) {
1055                                 $trail = $submatch[1];
1056                         } else {
1057                                 $trail = "";
1058                         }
1059                         $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
1060                         if (isset($match[1][0]) && $match[1][0] == ':')
1061                                 $match[1] = substr($match[1], 1);
1062                         $thelink = $this->makeLink( $match[1], $text, "", $trail );
1063                 }
1064                 $comment = preg_replace( $linkRegexp, StringUtils::escapeRegexReplacement( $thelink ), $comment, 1 );
1065
1066                 return $comment;
1067         }
1068
1069         /**
1070          * Wrap a comment in standard punctuation and formatting if
1071          * it's non-empty, otherwise return empty string.
1072          *
1073          * @param string $comment
1074          * @param mixed $title Title object (to generate link to section in autocomment) or null
1075          * @param bool $local Whether section links should refer to local page
1076          *
1077          * @return string
1078          */
1079         function commentBlock( $comment, $title = NULL, $local = false ) {
1080                 // '*' used to be the comment inserted by the software way back
1081                 // in antiquity in case none was provided, here for backwards
1082                 // compatability, acc. to brion -ævar
1083                 if( $comment == '' || $comment == '*' ) {
1084                         return '';
1085                 } else {
1086                         $formatted = $this->formatComment( $comment, $title, $local );
1087                         return " <span class=\"comment\">($formatted)</span>";
1088                 }
1089         }
1090
1091         /**
1092          * Wrap and format the given revision's comment block, if the current
1093          * user is allowed to view it.
1094          *
1095          * @param Revision $rev
1096          * @param bool $local Whether section links should refer to local page
1097          * @return string HTML
1098          */
1099         function revComment( Revision $rev, $local = false ) {
1100                 if( $rev->userCan( Revision::DELETED_COMMENT ) ) {
1101                         $block = $this->commentBlock( $rev->getRawComment(), $rev->getTitle(), $local );
1102                 } else {
1103                         $block = " <span class=\"comment\">" .
1104                                 wfMsgHtml( 'rev-deleted-comment' ) . "</span>";
1105                 }
1106                 if( $rev->isDeleted( Revision::DELETED_COMMENT ) ) {
1107                         return " <span class=\"history-deleted\">$block</span>";
1108                 }
1109                 return $block;
1110         }
1111
1112         /** @todo document */
1113         function tocIndent() {
1114                 return "\n<ul>";
1115         }
1116
1117         /** @todo document */
1118         function tocUnindent($level) {
1119                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
1120         }
1121
1122         /**
1123          * parameter level defines if we are on an indentation level
1124          */
1125         function tocLine( $anchor, $tocline, $tocnumber, $level ) {
1126                 return "\n<li class=\"toclevel-$level\"><a href=\"#" .
1127                         $anchor . '"><span class="tocnumber">' .
1128                         $tocnumber . '</span> <span class="toctext">' .
1129                         $tocline . '</span></a>';
1130         }
1131
1132         /** @todo document */
1133         function tocLineEnd() {
1134                 return "</li>\n";
1135         }
1136
1137         /** @todo document */
1138         function tocList($toc) {
1139                 global $wgJsMimeType;
1140                 $title = wfMsgHtml('toc') ;
1141                 return
1142                    '<table id="toc" class="toc" summary="' . $title .'"><tr><td>'
1143                  . '<div id="toctitle"><h2>' . $title . "</h2></div>\n"
1144                  . $toc
1145                  # no trailing newline, script should not be wrapped in a
1146                  # paragraph
1147                  . "</ul>\n</td></tr></table>"
1148                  . '<script type="' . $wgJsMimeType . '">'
1149                  . ' if (window.showTocToggle) {'
1150                  . ' var tocShowText = "' . wfEscapeJsString( wfMsg('showtoc') ) . '";'
1151                  . ' var tocHideText = "' . wfEscapeJsString( wfMsg('hidetoc') ) . '";'
1152                  . ' showTocToggle();'
1153                  . ' } '
1154                  . "</script>\n";
1155         }
1156
1157         /**
1158          * Used to generate section edit links that point to "other" pages
1159          * (sections that are really part of included pages).
1160          *
1161          * @param $title Title string.
1162          * @param $section Integer: section number.
1163          */
1164         public function editSectionLinkForOther( $title, $section ) {
1165                 $title = Title::newFromText( $title );
1166                 return $this->doEditSectionLink( $title, $section, '', 'EditSectionLinkForOther' );
1167         }
1168
1169         /**
1170          * @param $nt Title object.
1171          * @param $section Integer: section number.
1172          * @param $hint Link String: title, or default if omitted or empty
1173          */
1174         public function editSectionLink( Title $nt, $section, $hint='' ) {
1175                 if( $hint != '' ) {
1176                         $hint = wfMsgHtml( 'editsectionhint', htmlspecialchars( $hint ) );
1177                         $hint = " title=\"$hint\"";
1178                 }
1179                 return $this->doEditSectionLink( $nt, $section, $hint, 'EditSectionLink' );
1180         }
1181
1182         /**
1183          * Implement editSectionLink and editSectionLinkForOther.
1184          *
1185          * @param $nt      Title object
1186          * @param $section Integer, section number
1187          * @param $hint    String, for HTML title attribute
1188          * @param $hook    String, name of hook to run
1189          * @return         String, HTML to use for edit link
1190          */
1191         protected function doEditSectionLink( Title $nt, $section, $hint, $hook ) {
1192                 global $wgContLang;
1193                 $editurl = '&section='.$section;
1194                 $url = $this->makeKnownLinkObj(
1195                         $nt,
1196                         wfMsg('editsection'),
1197                         'action=edit'.$editurl,
1198                         '', '', '',  $hint
1199                 );
1200                 $result = null;
1201
1202                 // The two hooks have slightly different interfaces . . .
1203                 if( $hook == 'EditSectionLink' ) {
1204                         wfRunHooks( 'EditSectionLink', array( &$this, $nt, $section, $hint, $url, &$result ) );
1205                 } elseif( $hook == 'EditSectionLinkForOther' ) {
1206                         wfRunHooks( 'EditSectionLinkForOther', array( &$this, $nt, $section, $url, &$result ) );
1207                 }
1208
1209                 // For reverse compatibility, add the brackets *after* the hook is run,
1210                 // and even add them to hook-provided text.
1211                 if( is_null( $result ) ) {
1212                         $result = wfMsg( 'editsection-brackets', $url );
1213                 } else {
1214                         $result = wfMsg( 'editsection-brackets', $result );
1215                 }
1216                 return "<span class=\"editsection\">$result</span>";
1217         }
1218
1219         /**
1220          * Create a headline for content
1221          *
1222          * @param int    $level   The level of the headline (1-6)
1223          * @param string $attribs Any attributes for the headline, starting with a space and ending with '>'
1224          *                        This *must* be at least '>' for no attribs
1225          * @param string $anchor  The anchor to give the headline (the bit after the #)
1226          * @param string $text    The text of the header
1227          * @param string $link    HTML to add for the section edit link
1228          *
1229          * @return string HTML headline
1230          */
1231         public function makeHeadline( $level, $attribs, $anchor, $text, $link ) {
1232                 return "<a name=\"$anchor\"></a><h$level$attribs$link <span class=\"mw-headline\">$text</span></h$level>";
1233         }
1234
1235         /**
1236          * Split a link trail, return the "inside" portion and the remainder of the trail
1237          * as a two-element array
1238          *
1239          * @static
1240          */
1241         static function splitTrail( $trail ) {
1242                 static $regex = false;
1243                 if ( $regex === false ) {
1244                         global $wgContLang;
1245                         $regex = $wgContLang->linkTrail();
1246                 }
1247                 $inside = '';
1248                 if ( '' != $trail ) {
1249                         $m = array();
1250                         if ( preg_match( $regex, $trail, $m ) ) {
1251                                 $inside = $m[1];
1252                                 $trail = $m[2];
1253                         }
1254                 }
1255                 return array( $inside, $trail );
1256         }
1257
1258         /**
1259          * Generate a rollback link for a given revision.  Currently it's the
1260          * caller's responsibility to ensure that the revision is the top one. If
1261          * it's not, of course, the user will get an error message.
1262          *
1263          * If the calling page is called with the parameter &bot=1, all rollback
1264          * links also get that parameter. It causes the edit itself and the rollback
1265          * to be marked as "bot" edits. Bot edits are hidden by default from recent
1266          * changes, so this allows sysops to combat a busy vandal without bothering
1267          * other users.
1268          *
1269          * @param Revision $rev
1270          */
1271         function generateRollback( $rev ) {
1272                 return '<span class="mw-rollback-link">['
1273                         . $this->buildRollbackLink( $rev )
1274                         . ']</span>';
1275         }
1276
1277         /**
1278          * Build a raw rollback link, useful for collections of "tool" links
1279          *
1280          * @param Revision $rev
1281          * @return string
1282          */
1283         public function buildRollbackLink( $rev ) {
1284                 global $wgRequest, $wgUser;
1285                 $title = $rev->getTitle();
1286                 $extra  = $wgRequest->getBool( 'bot' ) ? '&bot=1' : '';
1287                 $extra .= '&token=' . urlencode( $wgUser->editToken( array( $title->getPrefixedText(),
1288                         $rev->getUserText() ) ) );
1289                 return $this->makeKnownLinkObj(
1290                         $title,
1291                         wfMsgHtml( 'rollbacklink' ),
1292                         'action=rollback&from=' . urlencode( $rev->getUserText() ) . $extra
1293                 );
1294         }
1295
1296         /**
1297          * Returns HTML for the "templates used on this page" list.
1298          *
1299          * @param array $templates Array of templates from Article::getUsedTemplate
1300          * or similar
1301          * @param bool $preview Whether this is for a preview
1302          * @param bool $section Whether this is for a section edit
1303          * @return string HTML output
1304          */
1305         public function formatTemplates( $templates, $preview = false, $section = false) {
1306                 global $wgUser;
1307                 wfProfileIn( __METHOD__ );
1308
1309                 $sk = $wgUser->getSkin();
1310
1311                 $outText = '';
1312                 if ( count( $templates ) > 0 ) {
1313                         # Do a batch existence check
1314                         $batch = new LinkBatch;
1315                         foreach( $templates as $title ) {
1316                                 $batch->addObj( $title );
1317                         }
1318                         $batch->execute();
1319
1320                         # Construct the HTML
1321                         $outText = '<div class="mw-templatesUsedExplanation">';
1322                         if ( $preview ) {
1323                                 $outText .= wfMsgExt( 'templatesusedpreview', array( 'parse' ) );
1324                         } elseif ( $section ) {
1325                                 $outText .= wfMsgExt( 'templatesusedsection', array( 'parse' ) );
1326                         } else {
1327                                 $outText .= wfMsgExt( 'templatesused', array( 'parse' ) );
1328                         }
1329                         $outText .= '</div><ul>';
1330
1331                         foreach ( $templates as $titleObj ) {
1332                                 $r = $titleObj->getRestrictions( 'edit' );
1333                                 if ( in_array( 'sysop', $r ) ) {
1334                                         $protected = wfMsgExt( 'template-protected', array( 'parseinline' ) );
1335                                 } elseif ( in_array( 'autoconfirmed', $r ) ) {
1336                                         $protected = wfMsgExt( 'template-semiprotected', array( 'parseinline' ) );
1337                                 } else {
1338                                         $protected = '';
1339                                 }
1340                                 $outText .= '<li>' . $sk->makeLinkObj( $titleObj ) . ' ' . $protected . '</li>';
1341                         }
1342                         $outText .= '</ul>';
1343                 }
1344                 wfProfileOut( __METHOD__  );
1345                 return $outText;
1346         }
1347
1348         /**
1349          * Format a size in bytes for output, using an appropriate
1350          * unit (B, KB, MB or GB) according to the magnitude in question
1351          *
1352          * @param $size Size to format
1353          * @return string
1354          */
1355         public function formatSize( $size ) {
1356                 global $wgLang;
1357                 return htmlspecialchars( $wgLang->formatSize( $size ) );
1358         }
1359
1360         /**
1361          * Given the id of an interface element, constructs the appropriate title
1362          * and accesskey attributes from the system messages.  (Note, this is usu-
1363          * ally the id but isn't always, because sometimes the accesskey needs to
1364          * go on a different element than the id, for reverse-compatibility, etc.)
1365          *
1366          * @param string $name Id of the element, minus prefixes.
1367          * @return string title and accesskey attributes, ready to drop in an
1368          *   element (e.g., ' title="This does something [x]" accesskey="x"').
1369          */
1370         public function tooltipAndAccesskey($name) {
1371                 $fname="Linker::tooltipAndAccesskey";
1372                 wfProfileIn($fname);
1373                 $out = '';
1374
1375                 $tooltip = wfMsg('tooltip-'.$name);
1376                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1377                         // Compatibility: formerly some tooltips had [alt-.] hardcoded
1378                         $tooltip = preg_replace( "/ ?\[alt-.\]$/", '', $tooltip );
1379                         $out .= ' title="'.htmlspecialchars($tooltip);
1380                 }
1381                 $accesskey = wfMsg('accesskey-'.$name);
1382                 if ($accesskey && $accesskey != '-' && !wfEmptyMsg('accesskey-'.$name, $accesskey)) {
1383                         if ($out) $out .= " [$accesskey]\" accesskey=\"$accesskey\"";
1384                         else $out .= " title=\"[$accesskey]\" accesskey=\"$accesskey\"";
1385                 } elseif ($out) {
1386                         $out .= '"';
1387                 }
1388                 wfProfileOut($fname);
1389                 return $out;
1390         }
1391
1392         /**
1393          * Given the id of an interface element, constructs the appropriate title
1394          * attribute from the system messages.  (Note, this is usually the id but
1395          * isn't always, because sometimes the accesskey needs to go on a different
1396          * element than the id, for reverse-compatibility, etc.)
1397          *
1398          * @param string $name Id of the element, minus prefixes.
1399          * @return string title attribute, ready to drop in an element
1400          * (e.g., ' title="This does something"').
1401          */
1402         public function tooltip($name) {
1403                 $out = '';
1404
1405                 $tooltip = wfMsg('tooltip-'.$name);
1406                 if (!wfEmptyMsg('tooltip-'.$name, $tooltip) && $tooltip != '-') {
1407                         $out = ' title="'.htmlspecialchars($tooltip).'"';
1408                 }
1409
1410                 return $out;
1411         }
1412 }