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  * @package MediaWiki
   8  */
   9
  10 /**
  11  * For the moment, Skin is a descendent class of Linker.
  12  * In the future, it should probably be further split
  13  * so that ever other bit of the wiki doesn't have to
  14  * go loading up Skin to get at it.
  15  *
  16  * @package MediaWiki
  17  */
  18 class Linker {
  19         var $linktrail ; # linktrail regexp
  20         var $postParseLinkColour = false;
  21
  22         /** @todo document */
  23         function Linker() {
  24                 global $wgContLang;
  25                 $this->linktrail = $wgContLang->linkTrail();
  26
  27                 # Cache option lookups done very frequently
  28                 $options = array( 'highlightbroken', 'hover' );
  29                 foreach( $options as $opt ) {
  30                         global $wgUser;
  31                         $this->mOptions[$opt] = $wgUser->getOption( $opt );
  32                 }
  33         }
  34
  35         /**
  36          * Get/set accessor for delayed link colouring
  37          */
  38         function postParseLinkColour( $setting = NULL ) {
  39                 return wfSetVar( $this->postParseLinkColour, $setting );
  40         }
  41
  42         /** @todo document */
  43         function getExternalLinkAttributes( $link, $text, $class='' ) {
  44                 global $wgContLang;
  45
  46                 $same = ($link == $text);
  47                 $link = urldecode( $link );
  48                 $link = $wgContLang->checkTitleEncoding( $link );
  49                 $link = preg_replace( '/[\\x00-\\x1f_]/', ' ', $link );
  50                 $link = htmlspecialchars( $link );
  51
  52                 $r = ($class != '') ? " class='$class'" : " class='external'";
  53
  54                 if( !$same && $this->mOptions['hover'] ) {
  55                         $r .= " title=\"{$link}\"";
  56                 }
  57                 return $r;
  58         }
  59
  60         /** @todo document */
  61         function getInternalLinkAttributes( $link, $text, $broken = false ) {
  62                 $link = urldecode( $link );
  63                 $link = str_replace( '_', ' ', $link );
  64                 $link = htmlspecialchars( $link );
  65
  66                 if( $broken == 'stub' ) {
  67                         $r = ' class="stub"';
  68                 } else if ( $broken == 'yes' ) {
  69                         $r = ' class="new"';
  70                 } else {
  71                         $r = '';
  72                 }
  73
  74                 if( $this->mOptions['hover'] ) {
  75                         $r .= " title=\"{$link}\"";
  76                 }
  77                 return $r;
  78         }
  79
  80         /**
  81          * @param bool $broken
  82          */
  83         function getInternalLinkAttributesObj( &$nt, $text, $broken = false ) {
  84                 if( $broken == 'stub' ) {
  85                         $r = ' class="stub"';
  86                 } else if ( $broken == 'yes' ) {
  87                         $r = ' class="new"';
  88                 } else {
  89                         $r = '';
  90                 }
  91
  92                 if( $this->mOptions['hover'] ) {
  93                         $r .= ' title="' . $nt->getEscapedText() . '"';
  94                 }
  95                 return $r;
  96         }
  97
  98         /**
  99          * Note: This function MUST call getArticleID() on the link,
 100          * otherwise the cache won't get updated properly.  See LINKCACHE.DOC.
 101          */
 102         function makeLink( $title, $text = '', $query = '', $trail = '' ) {
 103                 wfProfileIn( 'Skin::makeLink' );
 104                 $nt = Title::newFromText( $title );
 105                 if ($nt) {
 106                         $result = $this->makeLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 107                 } else {
 108                         wfDebug( 'Invalid title passed to Skin::makeLink(): "'.$title."\"\n" );
 109                         $result = $text == "" ? $title : $text;
 110                 }
 111
 112                 wfProfileOut( 'Skin::makeLink' );
 113                 return $result;
 114         }
 115
 116         /** @todo document */
 117         function makeKnownLink( $title, $text = '', $query = '', $trail = '', $prefix = '',$aprops = '') {
 118                 $nt = Title::newFromText( $title );
 119                 if ($nt) {
 120                         return $this->makeKnownLinkObj( Title::newFromText( $title ), $text, $query, $trail, $prefix , $aprops );
 121                 } else {
 122                         wfDebug( 'Invalid title passed to Skin::makeKnownLink(): "'.$title."\"\n" );
 123                         return $text == '' ? $title : $text;
 124                 }
 125         }
 126
 127         /** @todo document */
 128         function makeBrokenLink( $title, $text = '', $query = '', $trail = '' ) {
 129                 $nt = Title::newFromText( $title );
 130                 if ($nt) {
 131                         return $this->makeBrokenLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 132                 } else {
 133                         wfDebug( 'Invalid title passed to Skin::makeBrokenLink(): "'.$title."\"\n" );
 134                         return $text == '' ? $title : $text;
 135                 }
 136         }
 137
 138         /** @todo document */
 139         function makeStubLink( $title, $text = '', $query = '', $trail = '' ) {
 140                 $nt = Title::newFromText( $title );
 141                 if ($nt) {
 142                         return $this->makeStubLinkObj( Title::newFromText( $title ), $text, $query, $trail );
 143                 } else {
 144                         wfDebug( 'Invalid title passed to Skin::makeStubLink(): "'.$title."\"\n" );
 145                         return $text == '' ? $title : $text;
 146                 }
 147         }
 148
 149         /**
 150          * Pass a title object, not a title string
 151          */
 152         function makeLinkObj( &$nt, $text= '', $query = '', $trail = '', $prefix = '' ) {
 153                 global $wgOut, $wgUser, $wgLinkHolders;
 154                 $fname = 'Skin::makeLinkObj';
 155                 wfProfileIn( $fname );
 156
 157                 # Fail gracefully
 158                 if ( ! isset($nt) ) {
 159                         # wfDebugDieBacktrace();
 160                         wfProfileOut( $fname );
 161                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 162                 }
 163
 164                 $ns = $nt->getNamespace();
 165                 $dbkey = $nt->getDBkey();
 166                 if ( $nt->isExternal() ) {
 167                         $u = $nt->getFullURL();
 168                         $link = $nt->getPrefixedURL();
 169                         if ( '' == $text ) { $text = $nt->getPrefixedText(); }
 170                         $style = $this->getExternalLinkAttributes( $link, $text, 'extiw' );
 171
 172                         $inside = '';
 173                         if ( '' != $trail ) {
 174                                 if ( preg_match( '/^([a-z]+)(.*)$$/sD', $trail, $m ) ) {
 175                                         $inside = $m[1];
 176                                         $trail = $m[2];
 177                                 }
 178                         }
 179                         $t = "<a href=\"{$u}\"{$style}>{$text}{$inside}</a>";
 180                         if( $this->postParseLinkColour ) {
 181                                 # There's no existence check, but this will prevent
 182                                 # interwiki links from being parsed as external links.
 183                                 global $wgInterwikiLinkHolders;
 184                                 $nr = array_push($wgInterwikiLinkHolders, $t);
 185                                 $retVal = '<!--IWLINK '. ($nr-1) ."-->{$trail}";
 186                         } else {
 187                                 return $t;
 188                         }
 189                 } elseif ( 0 == $ns && "" == $dbkey ) {
 190                         # A self-link with a fragment; skip existence check.
 191                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 192                 } elseif ( ( NS_SPECIAL == $ns ) || ( NS_IMAGE == $ns ) ) {
 193                         # These are always shown as existing, currently.
 194                         # Special pages don't exist in the database; images may
 195                         # occasionally be present when there is no description
 196                         # page per se, so we always shown them.
 197                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 198                 } elseif ( $this->postParseLinkColour ) {
 199                         wfProfileIn( $fname.'-postparse' );
 200                         # Insert a placeholder, and we'll work out the existence checks
 201                         # in a big lump later.
 202                         $inside = '';
 203                         if ( '' != $trail ) {
 204                                 if ( preg_match( $this->linktrail, $trail, $m ) ) {
 205                                         $inside = $m[1];
 206                                         $trail = $m[2];
 207                                 }
 208                         }
 209
 210                         # These get picked up by Parser::replaceLinkHolders()
 211                         $nr = array_push( $wgLinkHolders['namespaces'], $nt->getNamespace() );
 212                         $wgLinkHolders['dbkeys'][] = $dbkey;
 213                         $wgLinkHolders['queries'][] = $query;
 214                         $wgLinkHolders['texts'][] = $prefix.$text.$inside;
 215                         $wgLinkHolders['titles'][] =& $nt;
 216
 217                         $retVal = '<!--LINK '. ($nr-1) ."-->{$trail}";
 218                         wfProfileOut( $fname.'-postparse' );
 219                 } else {
 220                         wfProfileIn( $fname.'-immediate' );
 221                         # Work out link colour immediately
 222                         $aid = $nt->getArticleID() ;
 223                         if ( 0 == $aid ) {
 224                                 $retVal = $this->makeBrokenLinkObj( $nt, $text, $query, $trail, $prefix );
 225                         } else {
 226                                 $threshold = $wgUser->getOption('stubthreshold') ;
 227                                 if ( $threshold > 0 ) {
 228                                         $dbr =& wfGetDB( DB_SLAVE );
 229                                         $s = $dbr->selectRow(
 230                                                 array( 'page' ),
 231                                                 array( 'page_len',
 232                                                         'page_namespace',
 233                                                         'page_is_redirect' ),
 234                                                 array( 'page_id' => $aid ), $fname ) ;
 235                                         if ( $s !== false ) {
 236                                                 $size = $s->page_len;
 237                                                 if ( $s->page_is_redirect OR $s->page_namespace != NS_MAIN ) {
 238                                                         $size = $threshold*2 ; # Really big
 239                                                 }
 240                                         } else {
 241                                                 $size = $threshold*2 ; # Really big
 242                                         }
 243                                 } else {
 244                                         $size = 1 ;
 245                                 }
 246                                 if ( $size < $threshold ) {
 247                                         $retVal = $this->makeStubLinkObj( $nt, $text, $query, $trail, $prefix );
 248                                 } else {
 249                                         $retVal = $this->makeKnownLinkObj( $nt, $text, $query, $trail, $prefix );
 250                                 }
 251                         }
 252                         wfProfileOut( $fname.'-immediate' );
 253                 }
 254                 wfProfileOut( $fname );
 255                 return $retVal;
 256         }
 257
 258         /**
 259          * Pass a title object, not a title string
 260          */
 261         function makeKnownLinkObj( &$nt, $text = '', $query = '', $trail = '', $prefix = '' , $aprops = '' ) {
 262                 global $wgOut, $wgTitle, $wgInputEncoding;
 263
 264                 $fname = 'Skin::makeKnownLinkObj';
 265                 wfProfileIn( $fname );
 266
 267                 if ( !is_object( $nt ) ) {
 268                         wfProfileIn( $fname );
 269                         return $text;
 270                 }
 271
 272                 $u = $nt->escapeLocalURL( $query );
 273                 if ( '' != $nt->getFragment() ) {
 274                         if( $nt->getPrefixedDbkey() == '' ) {
 275                                 $u = '';
 276                                 if ( '' == $text ) {
 277                                         $text = htmlspecialchars( $nt->getFragment() );
 278                                 }
 279                         }
 280                         $anchor = urlencode( do_html_entity_decode( str_replace(' ', '_', $nt->getFragment()), ENT_COMPAT, $wgInputEncoding ) );
 281                         $replacearray = array(
 282                                 '%3A' => ':',
 283                                 '%' => '.'
 284                         );
 285                         $u .= '#' . str_replace(array_keys($replacearray),array_values($replacearray),$anchor);
 286                 }
 287                 if ( '' == $text ) {
 288                         $text = htmlspecialchars( $nt->getPrefixedText() );
 289                 }
 290                 $style = $this->getInternalLinkAttributesObj( $nt, $text );
 291
 292                 $inside = '';
 293                 if ( '' != $trail ) {
 294                         if ( preg_match( $this->linktrail, $trail, $m ) ) {
 295                                 $inside = $m[1];
 296                                 $trail = $m[2];
 297                         }
 298                 }
 299                 $r = "<a href=\"{$u}\"{$style}{$aprops}>{$prefix}{$text}{$inside}</a>{$trail}";
 300                 wfProfileOut( $fname );
 301                 return $r;
 302         }
 303
 304         /**
 305          * Pass a title object, not a title string
 306          */
 307         function makeBrokenLinkObj( &$nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 308                 # Fail gracefully
 309                 if ( ! isset($nt) ) {
 310                         # wfDebugDieBacktrace();
 311                         return "<!-- ERROR -->{$prefix}{$text}{$trail}";
 312                 }
 313
 314                 $fname = 'Skin::makeBrokenLinkObj';
 315                 wfProfileIn( $fname );
 316
 317                 if ( '' == $query ) {
 318                         $q = 'action=edit';
 319                 } else {
 320                         $q = 'action=edit&'.$query;
 321                 }
 322                 $u = $nt->escapeLocalURL( $q );
 323
 324                 if ( '' == $text ) {
 325                         $text = htmlspecialchars( $nt->getPrefixedText() );
 326                 }
 327                 $style = $this->getInternalLinkAttributesObj( $nt, $text, "yes" );
 328
 329                 $inside = '';
 330                 if ( '' != $trail ) {
 331                         if ( preg_match( $this->linktrail, $trail, $m ) ) {
 332                                 $inside = $m[1];
 333                                 $trail = $m[2];
 334                         }
 335                 }
 336                 if ( $this->mOptions['highlightbroken'] ) {
 337                         $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 338                 } else {
 339                         $s = "{$prefix}{$text}{$inside}<a href=\"{$u}\"{$style}>?</a>{$trail}";
 340                 }
 341
 342                 wfProfileOut( $fname );
 343                 return $s;
 344         }
 345
 346         /**
 347          * Pass a title object, not a title string
 348          */
 349         function makeStubLinkObj( &$nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 350                 $link = $nt->getPrefixedURL();
 351
 352                 $u = $nt->escapeLocalURL( $query );
 353
 354                 if ( '' == $text ) {
 355                         $text = htmlspecialchars( $nt->getPrefixedText() );
 356                 }
 357                 $style = $this->getInternalLinkAttributesObj( $nt, $text, 'stub' );
 358
 359                 $inside = '';
 360                 if ( '' != $trail ) {
 361                         if ( preg_match( $this->linktrail, $trail, $m ) ) {
 362                                 $inside = $m[1];
 363                                 $trail = $m[2];
 364                         }
 365                 }
 366                 if ( $this->mOptions['highlightbroken'] ) {
 367                         $s = "<a href=\"{$u}\"{$style}>{$prefix}{$text}{$inside}</a>{$trail}";
 368                 } else {
 369                         $s = "{$prefix}{$text}{$inside}<a href=\"{$u}\"{$style}>!</a>{$trail}";
 370                 }
 371                 return $s;
 372         }
 373
 374         /** @todo document */
 375         function makeSelfLinkObj( &$nt, $text = '', $query = '', $trail = '', $prefix = '' ) {
 376                 $u = $nt->escapeLocalURL( $query );
 377                 if ( '' == $text ) {
 378                         $text = htmlspecialchars( $nt->getPrefixedText() );
 379                 }
 380                 $inside = '';
 381                 if ( '' != $trail ) {
 382                         if ( preg_match( $this->linktrail, $trail, $m ) ) {
 383                                 $inside = $m[1];
 384                                 $trail = $m[2];
 385                         }
 386                 }
 387                 return "<strong>{$prefix}{$text}{$inside}</strong>{$trail}";
 388         }
 389
 390         /** @todo document */
 391         function fnamePart( $url ) {
 392                 $basename = strrchr( $url, '/' );
 393                 if ( false === $basename ) {
 394                         $basename = $url;
 395                 } else {
 396                         $basename = substr( $basename, 1 );
 397                 }
 398                 return htmlspecialchars( $basename );
 399         }
 400
 401         /** @todo document */
 402         function makeImage( $url, $alt = '' ) {
 403                 global $wgOut;
 404                 if ( '' == $alt ) {
 405                         $alt = $this->fnamePart( $url );
 406                 }
 407                 $s = '<img src="'.$url.'" alt="'.$alt.'" />';
 408                 return $s;
 409         }
 410
 411         /** @todo document */
 412         function makeImageLink( $name, $url, $alt = '' ) {
 413                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 414                 return $this->makeImageLinkObj( $nt, $alt );
 415         }
 416
 417         /** @todo document */
 418         function makeImageLinkObj( $nt, $alt = '' ) {
 419                 global $wgContLang, $wgUseImageResize;
 420                 $img   = Image::newFromTitle( $nt );
 421                 $url   = $img->getViewURL();
 422
 423                 $align = '';
 424                 $prefix = $postfix = '';
 425
 426                 # Check if the alt text is of the form "options|alt text"
 427                 # Options are:
 428                 #  * thumbnail          make a thumbnail with enlarge-icon and caption, alignment depends on lang
 429                 #  * left               no resizing, just left align. label is used for alt= only
 430                 #  * right              same, but right aligned
 431                 #  * none               same, but not aligned
 432                 #  * ___px              scale to ___ pixels width, no aligning. e.g. use in taxobox
 433                 #  * center             center the image
 434                 #  * framed             Keep original image size, no magnify-button.
 435
 436                 $part = explode( '|', $alt);
 437
 438                 $mwThumb  =& MagicWord::get( MAG_IMG_THUMBNAIL );
 439                 $mwLeft   =& MagicWord::get( MAG_IMG_LEFT );
 440                 $mwRight  =& MagicWord::get( MAG_IMG_RIGHT );
 441                 $mwNone   =& MagicWord::get( MAG_IMG_NONE );
 442                 $mwWidth  =& MagicWord::get( MAG_IMG_WIDTH );
 443                 $mwCenter =& MagicWord::get( MAG_IMG_CENTER );
 444                 $mwFramed =& MagicWord::get( MAG_IMG_FRAMED );
 445                 $alt = '';
 446
 447                 $height = $framed = $thumb = false;
 448                 $manual_thumb = "" ;
 449
 450                 foreach( $part as $key => $val ) {
 451                         $val_parts = explode ( "=" , $val , 2 ) ;
 452                         $left_part = array_shift ( $val_parts ) ;
 453                         if ( $wgUseImageResize && ! is_null( $mwThumb->matchVariableStartToEnd($val) ) ) {
 454                                 $thumb=true;
 455                         } elseif ( $wgUseImageResize && count ( $val_parts ) == 1 && ! is_null( $mwThumb->matchVariableStartToEnd($left_part) ) ) {
 456                                 # use manually specified thumbnail
 457                                 $thumb=true;
 458                                 $manual_thumb = array_shift ( $val_parts ) ;
 459                         } elseif ( ! is_null( $mwRight->matchVariableStartToEnd($val) ) ) {
 460                                 # remember to set an alignment, don't render immediately
 461                                 $align = 'right';
 462                         } elseif ( ! is_null( $mwLeft->matchVariableStartToEnd($val) ) ) {
 463                                 # remember to set an alignment, don't render immediately
 464                                 $align = 'left';
 465                         } elseif ( ! is_null( $mwCenter->matchVariableStartToEnd($val) ) ) {
 466                                 # remember to set an alignment, don't render immediately
 467                                 $align = 'center';
 468                         } elseif ( ! is_null( $mwNone->matchVariableStartToEnd($val) ) ) {
 469                                 # remember to set an alignment, don't render immediately
 470                                 $align = 'none';
 471                         } elseif ( $wgUseImageResize && ! is_null( $match = $mwWidth->matchVariableStartToEnd($val) ) ) {
 472                                 # $match is the image width in pixels
 473                                 if ( preg_match( '/^([0-9]*)x([0-9]*)$/', $match, $m ) ) {
 474                                         $width = intval( $m[1] );
 475                                         $height = intval( $m[2] );
 476                                 } else {
 477                                         $width = intval($match);
 478                                 }
 479                         } elseif ( ! is_null( $mwFramed->matchVariableStartToEnd($val) ) ) {
 480                                 $framed=true;
 481                         } else {
 482                                 $alt = $val;
 483                         }
 484                 }
 485                 if ( 'center' == $align )
 486                 {
 487                         $prefix  = '<div class="center">';
 488                         $postfix = '</div>';
 489                         $align   = 'none';
 490                 }
 491
 492                 if ( $thumb || $framed ) {
 493
 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                         # here to 180 pixels
 501                         if ( $align == '' ) {
 502                                 $align = $wgContLang->isRTL() ? 'left' : 'right';
 503                         }
 504                         if ( ! isset($width) ) {
 505                                 $width = 180;
 506                         }
 507                         return $prefix.$this->makeThumbLinkObj( $img, $alt, $align, $width, $height, $framed, $manual_thumb ).$postfix;
 508
 509                 } elseif ( isset($width) ) {
 510
 511                         # Create a resized image, without the additional thumbnail
 512                         # features
 513
 514                         if (    ( ! $height === false )
 515                              && ( $img->getHeight() * $width / $img->getWidth() > $height ) ) {
 516                                 $width = $img->getWidth() * $height / $img->getHeight();
 517                         }
 518                         if ( '' == $manual_thumb ) $url = $img->createThumb( $width );
 519                 }
 520
 521                 # FIXME: This is a gross hack using a global.
 522                 # Replace link color holders in the caption text so the
 523                 # text portion can be placed int the alt/title attributes.
 524                 global $wgParser;
 525                 $wgParser->replaceLinkHolders( $alt );
 526
 527                 $alt = Sanitizer::stripAllTags( $alt );
 528
 529                 $u = $nt->escapeLocalURL();
 530                 if ( $url == '' ) {
 531                         $s = wfMsg( 'missingimage', $img->getName() );
 532                         $s .= "<br />{$alt}<br />{$url}<br />\n";
 533                 } else {
 534                         $s = '<a href="'.$u.'" class="image" title="'.$alt.'">' .
 535                                  '<img src="'.$url.'" alt="'.$alt.'" longdesc="'.$u.'" /></a>';
 536                 }
 537                 if ( '' != $align ) {
 538                         $s = "<div class=\"float{$align}\"><span>{$s}</span></div>";
 539                 }
 540                 return str_replace("\n", ' ',$prefix.$s.$postfix);
 541         }
 542
 543         /**
 544          * Make HTML for a thumbnail including image, border and caption
 545          * $img is an Image object
 546          */
 547         function makeThumbLinkObj( $img, $label = '', $align = 'right', $boxwidth = 180, $boxheight=false, $framed=false , $manual_thumb = "" ) {
 548                 global $wgStylePath, $wgContLang;
 549                 # $image = Title::makeTitleSafe( NS_IMAGE, $name );
 550                 $url  = $img->getViewURL();
 551
 552                 #$label = htmlspecialchars( $label );
 553                 $alt = Sanitizer::stripAllTags( $label );
 554
 555                 $width = $height = 0;
 556                 if ( $img->exists() )
 557                 {
 558                         $width  = $img->getWidth();
 559                         $height = $img->getHeight();
 560                 }
 561                 if ( 0 == $width || 0 == $height )
 562                 {
 563                         $width = $height = 200;
 564                 }
 565                 if ( $boxwidth == 0 )
 566                 {
 567                         $boxwidth = 200;
 568                 }
 569                 if ( $framed )
 570                 {
 571                         // Use image dimensions, don't scale
 572                         $boxwidth  = $width;
 573                         $oboxwidth = $boxwidth + 2;
 574                         $boxheight = $height;
 575                         $thumbUrl  = $url;
 576                 } else {
 577                         $h  = intval( $height/($width/$boxwidth) );
 578                         $oboxwidth = $boxwidth + 2;
 579                         if ( ( ! $boxheight === false ) &&  ( $h > $boxheight ) )
 580                         {
 581                                 $boxwidth *= $boxheight/$h;
 582                         } else {
 583                                 $boxheight = $h;
 584                         }
 585                         if ( '' == $manual_thumb ) $thumbUrl = $img->createThumb( $boxwidth );
 586                 }
 587
 588                 if ( $manual_thumb != '' ) # Use manually specified thumbnail
 589                 {
 590                         $manual_title = Title::makeTitleSafe( NS_IMAGE, $manual_thumb ); #new Title ( $manual_thumb ) ;
 591                         $manual_img = Image::newFromTitle( $manual_title );
 592                         $thumbUrl = $manual_img->getViewURL();
 593                         if ( $manual_img->exists() )
 594                         {
 595                                 $width  = $manual_img->getWidth();
 596                                 $height = $manual_img->getHeight();
 597                                 $boxwidth = $width ;
 598                                 $boxheight = $height ;
 599                                 $oboxwidth = $boxwidth + 2 ;
 600                         }
 601                 }
 602
 603                 $u = $img->getEscapeLocalURL();
 604
 605                 $more = htmlspecialchars( wfMsg( 'thumbnail-more' ) );
 606                 $magnifyalign = $wgContLang->isRTL() ? 'left' : 'right';
 607                 $textalign = $wgContLang->isRTL() ? ' style="text-align:right"' : '';
 608
 609                 $s = "<div class=\"thumb t{$align}\"><div style=\"width:{$oboxwidth}px;\">";
 610                 if ( $thumbUrl == '' ) {
 611                         $s .= wfMsg( 'missingimage', $img->getName() );
 612                         $zoomicon = '';
 613                 } else {
 614                         $s .= '<a href="'.$u.'" class="internal" title="'.$alt.'">'.
 615                                 '<img src="'.$thumbUrl.'" alt="'.$alt.'" ' .
 616                                 'width="'.$boxwidth.'" height="'.$boxheight.'" ' .
 617                                 'longdesc="'.$u.'" /></a>';
 618                         if ( $framed ) {
 619                                 $zoomicon="";
 620                         } else {
 621                                 $zoomicon =  '<div class="magnify" style="float:'.$magnifyalign.'">'.
 622                                         '<a href="'.$u.'" class="internal" title="'.$more.'">'.
 623                                         '<img src="'.$wgStylePath.'/common/images/magnify-clip.png" ' .
 624                                         'width="15" height="11" alt="'.$more.'" /></a></div>';
 625                         }
 626                 }
 627                 $s .= '  <div class="thumbcaption" '.$textalign.'>'.$zoomicon.$label."</div></div></div>";
 628                 return str_replace("\n", ' ', $s);
 629         }
 630
 631         /** @todo document */
 632         function makeMediaLink( $name, $url, $alt = '' ) {
 633                 $nt = Title::makeTitleSafe( NS_IMAGE, $name );
 634                 return $this->makeMediaLinkObj( $nt, $alt );
 635         }
 636
 637         /**
 638          * Create a direct link to a given uploaded file.
 639          *
 640          * @param Title  $title
 641          * @param string $text   pre-sanitized HTML
 642          * @param bool   $nourl  Mask absolute URLs, so the parser doesn't
 643          *                       linkify them (it is currently not context-aware)
 644          * @return string HTML
 645          *
 646          * @access public
 647          * @todo Handle invalid or missing images better.
 648          */
 649         function makeMediaLinkObj( $title, $text = '', $nourl=false ) {
 650                 if( is_null( $title ) ) {
 651                         ### HOTFIX. Instead of breaking, return empty string.
 652                         return $text;
 653                 } else {
 654                         $name = $title->getDBKey();
 655                         $img  = Image::newFromTitle( $title );
 656                         $url  = $img->getURL();
 657                         if( $nourl ) {
 658                                 $url = str_replace( "http://", "http-noparse://", $url );
 659                         }
 660                         $alt = htmlspecialchars( $title->getText() );
 661                         if( $text == '' ) {
 662                                 $text = $alt;
 663                         }
 664                         $u = htmlspecialchars( $url );
 665                         return "<a href=\"{$u}\" class='internal' title=\"{$alt}\">{$text}</a>";
 666                 }
 667         }
 668
 669         /** @todo document */
 670         function specialLink( $name, $key = '' ) {
 671                 global $wgContLang;
 672
 673                 if ( '' == $key ) { $key = strtolower( $name ); }
 674                 $pn = $wgContLang->ucfirst( $name );
 675                 return $this->makeKnownLink( $wgContLang->specialPage( $pn ),
 676                   wfMsg( $key ) );
 677         }
 678
 679         /** @todo document */
 680         function makeExternalLink( $url, $text, $escape = true, $linktype = '' ) {
 681                 $style = $this->getExternalLinkAttributes( $url, $text, 'external ' . $linktype );
 682                 global $wgNoFollowLinks;
 683                 if( $wgNoFollowLinks ) {
 684                         $style .= ' rel="nofollow"';
 685                 }
 686                 $url = htmlspecialchars( $url );
 687                 if( $escape ) {
 688                         $text = htmlspecialchars( $text );
 689                 }
 690                 return '<a href="'.$url.'"'.$style.'>'.$text.'</a>';
 691         }
 692
 693         /**
 694          * This function is called by all recent changes variants, by the page history,
 695          * and by the user contributions list. It is responsible for formatting edit
 696          * comments. It escapes any HTML in the comment, but adds some CSS to format
 697          * auto-generated comments (from section editing) and formats [[wikilinks]].
 698          *
 699          * The &$title parameter must be a title OBJECT. It is used to generate a
 700          * direct link to the section in the autocomment.
 701          * @author Erik Moeller <moeller@scireview.de>
 702          *
 703          * Note: there's not always a title to pass to this function.
 704          * Since you can't set a default parameter for a reference, I've turned it
 705          * temporarily to a value pass. Should be adjusted further. --brion
 706          */
 707         function formatComment($comment, $title = NULL) {
 708                 $fname = 'Skin::formatComment';
 709                 wfProfileIn( $fname );
 710
 711                 global $wgContLang;
 712                 $comment = htmlspecialchars( $comment );
 713
 714                 # The pattern for autogen comments is / * foo * /, which makes for
 715                 # some nasty regex.
 716                 # We look for all comments, match any text before and after the comment,
 717                 # add a separator where needed and format the comment itself with CSS
 718                 while (preg_match('/(.*)\/\*\s*(.*?)\s*\*\/(.*)/', $comment,$match)) {
 719                         $pre=$match[1];
 720                         $auto=$match[2];
 721                         $post=$match[3];
 722                         $link='';
 723                         if($title) {
 724                                 $section=$auto;
 725
 726                                 # This is hackish but should work in most cases.
 727                                 $section=str_replace('[[','',$section);
 728                                 $section=str_replace(']]','',$section);
 729                                 $title->mFragment=$section;
 730                                 $link=$this->makeKnownLinkObj($title,wfMsg('sectionlink'));
 731                         }
 732                         $sep='-';
 733                         $auto=$link.$auto;
 734                         if($pre) { $auto = $sep.' '.$auto; }
 735                         if($post) { $auto .= ' '.$sep; }
 736                         $auto='<span class="autocomment">'.$auto.'</span>';
 737                         $comment=$pre.$auto.$post;
 738                 }
 739
 740                 # format regular and media links - all other wiki formatting
 741                 # is ignored
 742                 $medians = $wgContLang->getNsText( NS_MEDIA ) . ':';
 743                 while(preg_match('/\[\[(.*?)(\|(.*?))*\]\](.*)$/',$comment,$match)) {
 744                         # Handle link renaming [[foo|text]] will show link as "text"
 745                         if( "" != $match[3] ) {
 746                                 $text = $match[3];
 747                         } else {
 748                                 $text = $match[1];
 749                         }
 750                         if( preg_match( '/^' . $medians . '(.*)$/i', $match[1], $submatch ) ) {
 751                                 # Media link; trail not supported.
 752                                 $linkRegexp = '/\[\[(.*?)\]\]/';
 753                                 $thelink = $this->makeMediaLink( $submatch[1], "", $text );
 754                         } else {
 755                                 # Other kind of link
 756                                 if( preg_match( wfMsgForContent( "linktrail" ), $match[4], $submatch ) ) {
 757                                         $trail = $submatch[1];
 758                                 } else {
 759                                         $trail = "";
 760                                 }
 761                                 $linkRegexp = '/\[\[(.*?)\]\]' . preg_quote( $trail, '/' ) . '/';
 762                                 if ($match[1][0] == ':')
 763                                         $match[1] = substr($match[1], 1);
 764                                 $thelink = $this->makeLink( $match[1], $text, "", $trail );
 765                         }
 766                         $comment = preg_replace( $linkRegexp, $thelink, $comment, 1 );
 767                 }
 768                 wfProfileOut( $fname );
 769                 return $comment;
 770         }
 771
 772         /**
 773          * Wrap a comment in standard punctuation and formatting if
 774          * it's non-empty, otherwise return empty string.
 775          *
 776          * @param string $comment
 777          * @param Title $title
 778          * @return string
 779          * @access public
 780          */
 781         function commentBlock( $comment, $title = NULL ) {
 782                 if( $comment == '' || $comment == '*' ) {
 783                         return '';
 784                 } else {
 785                         $formatted = $this->formatComment( $comment, $title );
 786                         return " <span class='comment'>($formatted)</span>";
 787                 }
 788         }
 789
 790         /** @todo document */
 791         function tocIndent() {
 792                 return "\n<ul>";
 793         }
 794
 795         /** @todo document */
 796         function tocUnindent($level) {
 797                 return "</li>\n" . str_repeat( "</ul>\n</li>\n", $level>0 ? $level : 0 );
 798         }
 799
 800         /**
 801          * parameter level defines if we are on an indentation level
 802          */
 803         function tocLine( $anchor, $tocline, $tocnumber, $level ) {
 804                 return "\n<li class='toclevel-$level'><a href=\"#" .
 805                         $anchor . '"><span class="tocnumber">' .
 806                         $tocnumber . '</span> <span class="toctext">' .
 807                         $tocline . '</span></a>';
 808         }
 809
 810         /** @todo document */
 811         function tocLineEnd() {
 812                 return "</li>\n";
 813         }
 814
 815         /** @todo document */
 816         function tocList($toc) {
 817                 return "<div id='toc'>\n"
 818                            . "<div id='toctitle'><h2>" . wfMsg('toc') . "</h2></div>\n"
 819                      . $toc
 820                                  . "</ul>\n</div>\n"
 821                                  . '<script type="text/javascript">'
 822                                  . ' if (window.showTocToggle) {'
 823                                  . ' var tocShowText = "' . addslashes( wfMsg('showtoc') ) . '";'
 824                                  . ' var tocHideText = "' . addslashes( wfMsg('hidetoc') ) . '"; '
 825                                  . ' showTocToggle();'
 826                                  . ' } '
 827                                  . '</script>'
 828                                  . "<div class='visualClear'></div>\n";
 829         }
 830
 831         /**
 832          * These two do not check for permissions: check $wgTitle->userCanEdit
 833          * before calling them
 834          */
 835         function editSectionScriptForOther( $title, $section, $head ) {
 836                 $ttl = Title::newFromText( $title );
 837                 $url = $ttl->escapeLocalURL( 'action=edit&section='.$section );
 838                 return '<span oncontextmenu=\'document.location="'.$url.'";return false;\'>'.$head.'</span>';
 839         }
 840
 841         /** @todo document */
 842         function editSectionScript( $nt, $section, $head ) {
 843                 global $wgRequest;
 844                 if( $wgRequest->getInt( 'oldid' ) && ( $wgRequest->getVal( 'diff' ) != '0' ) ) {
 845                         return $head;
 846                 }
 847                 $url = $nt->escapeLocalURL( 'action=edit&section='.$section );
 848                 return '<span oncontextmenu=\'document.location="'.$url.'";return false;\'>'.$head.'</span>';
 849         }
 850
 851         /** @todo document */
 852         function editSectionLinkForOther( $title, $section ) {
 853                 global $wgRequest;
 854                 global $wgContLang;
 855
 856                 $title = Title::newFromText($title);
 857                 $editurl = '&section='.$section;
 858                 $url = $this->makeKnownLink($title->getPrefixedText(),wfMsg('editsection'),'action=edit'.$editurl);
 859
 860                 if( $wgContLang->isRTL() ) {
 861                         $farside = 'left';
 862                         $nearside = 'right';
 863                 } else {
 864                         $farside = 'right';
 865                         $nearside = 'left';
 866                 }
 867                 return "<div class=\"editsection\" style=\"float:$farside;margin-$nearside:5px;\">[".$url."]</div>";
 868
 869         }
 870
 871         /** @todo document */
 872         function editSectionLink( $nt, $section ) {
 873                 global $wgRequest;
 874                 global $wgContLang;
 875
 876                 if( $wgRequest->getInt( 'oldid' ) && ( $wgRequest->getVal( 'diff' ) != '0' ) ) {
 877                         # Section edit links would be out of sync on an old page.
 878                         # But, if we're diffing to the current page, they'll be
 879                         # correct.
 880                         return '';
 881                 }
 882
 883                 $editurl = '&section='.$section;
 884                 $url = $this->makeKnownLink($nt->getPrefixedText(),wfMsg('editsection'),'action=edit'.$editurl);
 885
 886                 if( $wgContLang->isRTL() ) {
 887                         $farside = 'left';
 888                         $nearside = 'right';
 889                 } else {
 890                         $farside = 'right';
 891                         $nearside = 'left';
 892                 }
 893                 return "<div class=\"editsection\" style=\"float:$farside;margin-$nearside:5px;\">[".$url."]</div>";
 894         }
 895 }
 896 ?>