includes/specials/SpecialSearch.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19
  20 /**
  21  * Run text & title search and display the output
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 /**
  27  * Entry point
  28  *
  29  * @param $par String: (default '')
  30  */
  31 function wfSpecialSearch( $par = '' ) {
  32         global $wgRequest, $wgUser;
  33
  34         // Strip underscores from title parameter; most of the time we'll want
  35         // text form here. But don't strip underscores from actual text params!
  36         $titleParam = str_replace( '_', ' ', $par );
  37
  38         $search = str_replace( "\n", " ", $wgRequest->getText( 'search', $titleParam ) );
  39         $searchPage = new SpecialSearch( $wgRequest, $wgUser );
  40         if( $wgRequest->getVal( 'fulltext' )
  41                 || !is_null( $wgRequest->getVal( 'offset' ))
  42                 || !is_null( $wgRequest->getVal( 'searchx' ))) {
  43                 $searchPage->showResults( $search, 'search' );
  44         } else {
  45                 $searchPage->goResult( $search );
  46         }
  47 }
  48
  49 /**
  50  * implements Special:Search - Run text & title search and display the output
  51  * @ingroup SpecialPage
  52  */
  53 class SpecialSearch {
  54
  55         /**
  56          * Set up basic search parameters from the request and user settings.
  57          * Typically you'll pass $wgRequest and $wgUser.
  58          *
  59          * @param WebRequest $request
  60          * @param User $user
  61          * @public
  62          */
  63         function SpecialSearch( &$request, &$user ) {
  64                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
  65
  66                 $this->namespaces = $this->powerSearch( $request );
  67                 if( empty( $this->namespaces ) ) {
  68                         $this->namespaces = SearchEngine::userNamespaces( $user );
  69                 }
  70
  71                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
  72         }
  73
  74         /**
  75          * If an exact title match can be found, jump straight ahead to it.
  76          * @param string $term
  77          * @public
  78          */
  79         function goResult( $term ) {
  80                 global $wgOut;
  81                 global $wgGoToEdit;
  82
  83                 $this->setupPage( $term );
  84
  85                 # Try to go to page as entered.
  86                 $t = Title::newFromText( $term );
  87
  88                 # If the string cannot be used to create a title
  89                 if( is_null( $t ) ){
  90                         return $this->showResults( $term );
  91                 }
  92
  93                 # If there's an exact or very near match, jump right there.
  94                 $t = SearchEngine::getNearMatch( $term );
  95                 if( !is_null( $t ) ) {
  96                         $wgOut->redirect( $t->getFullURL() );
  97                         return;
  98                 }
  99
 100                 # No match, generate an edit URL
 101                 $t = Title::newFromText( $term );
 102                 if( ! is_null( $t ) ) {
 103                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 104                         # If the feature is enabled, go straight to the edit page
 105                         if ( $wgGoToEdit ) {
 106                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 107                                 return;
 108                         }
 109                 }
 110
 111                 $wgOut->wrapWikiMsg( "==$1==\n", 'notitlematches' );
 112                 if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
 113                         $wgOut->addWikiMsg( 'noexactmatch', wfEscapeWikiText( $term ) );
 114                 } else {
 115                         $wgOut->addWikiMsg( 'noexactmatch-nocreate', wfEscapeWikiText( $term ) );
 116                 }
 117
 118                 return $this->showResults( $term );
 119         }
 120
 121         /**
 122          * @param string $term
 123          * @public
 124          */
 125         function showResults( $term ) {
 126                 $fname = 'SpecialSearch::showResults';
 127                 wfProfileIn( $fname );
 128                 global $wgOut, $wgUser;
 129                 $sk = $wgUser->getSkin();
 130
 131                 $this->setupPage( $term );
 132
 133                 $wgOut->addWikiMsg( 'searchresulttext' );
 134
 135                 if( '' === trim( $term ) ) {
 136                         // Empty query -- straight view of search form
 137                         $wgOut->setSubtitle( '' );
 138                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 139                         $wgOut->addHTML( $this->powerSearchFocus() );
 140                         wfProfileOut( $fname );
 141                         return;
 142                 }
 143
 144                 global $wgDisableTextSearch;
 145                 if ( $wgDisableTextSearch ) {
 146                         global $wgSearchForwardUrl;
 147                         if( $wgSearchForwardUrl ) {
 148                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 149                                 $wgOut->redirect( $url );
 150                                 return;
 151                         }
 152                         global $wgInputEncoding;
 153                         $wgOut->addHTML(
 154                                 Xml::openElement( 'fieldset' ) .
 155                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 156                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 157                                 wfMsg( 'googlesearch',
 158                                         htmlspecialchars( $term ),
 159                                         htmlspecialchars( $wgInputEncoding ),
 160                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 161                                 ) .
 162                                 Xml::closeElement( 'fieldset' )
 163                         );
 164                         wfProfileOut( $fname );
 165                         return;
 166                 }
 167
 168                 $wgOut->addHTML( $this->shortDialog( $term ) );
 169
 170                 $search = SearchEngine::create();
 171                 $search->setLimitOffset( $this->limit, $this->offset );
 172                 $search->setNamespaces( $this->namespaces );
 173                 $search->showRedirects = $this->searchRedirects;
 174                 $rewritten = $search->replacePrefixes($term);
 175
 176                 $titleMatches = $search->searchTitle( $rewritten );
 177
 178                 // Sometimes the search engine knows there are too many hits
 179                 if ($titleMatches instanceof SearchResultTooMany) {
 180                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 181                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 182                         $wgOut->addHTML( $this->powerSearchFocus() );
 183                         wfProfileOut( $fname );
 184                         return;
 185                 }
 186
 187                 $textMatches = $search->searchText( $rewritten );
 188
 189                 // did you mean... suggestions
 190                 if($textMatches && $textMatches->hasSuggestion()){
 191                         $st = SpecialPage::getTitleFor( 'Search' );
 192                         $stParams = wfArrayToCGI( array(
 193                                         'search'        => $textMatches->getSuggestionQuery(),
 194                                         'fulltext'      => wfMsg('search')),
 195                                         $this->powerSearchOptions());
 196
 197                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 198                                         $textMatches->getSuggestionSnippet().'</a>';
 199
 200                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 201                 }
 202
 203                 // show number of results
 204                 $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
 205                         + ( $textMatches ? $textMatches->numRows() : 0);
 206                 $totalNum = 0;
 207                 if($titleMatches && !is_null($titleMatches->getTotalHits()))
 208                         $totalNum += $titleMatches->getTotalHits();
 209                 if($textMatches && !is_null($textMatches->getTotalHits()))
 210                         $totalNum += $textMatches->getTotalHits();
 211                 if ( $num > 0 ) {
 212                         if ( $totalNum > 0 ){
 213                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
 214                                         $this->offset+1, $this->offset+$num, $totalNum, $num );
 215                         } elseif ( $num >= $this->limit ) {
 216                                 $top = wfShowingResults( $this->offset, $this->limit );
 217                         } else {
 218                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
 219                         }
 220                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
 221                 }
 222
 223                 // prev/next links
 224                 if( $num || $this->offset ) {
 225                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 226                                 SpecialPage::getTitleFor( 'Search' ),
 227                                 wfArrayToCGI(
 228                                         $this->powerSearchOptions(),
 229                                         array( 'search' => $term ) ),
 230                                         ($num < $this->limit) );
 231                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 232                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 233                 } else {
 234                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 235                 }
 236
 237                 if( $titleMatches ) {
 238                         if( $titleMatches->numRows() ) {
 239                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 240                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 241                         }
 242                         $titleMatches->free();
 243                 }
 244
 245                 if( $textMatches ) {
 246                         // output appropriate heading
 247                         if( $textMatches->numRows() ) {
 248                                 if($titleMatches)
 249                                         $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 250                                 else // if no title matches the heading is redundant
 251                                         $wgOut->addHTML("<hr/>");
 252                         } elseif( $num == 0 ) {
 253                                 # Don't show the 'no text matches' if we received title matches
 254                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 255                         }
 256                         // show interwiki results if any
 257                         if( $textMatches->hasInterwikiResults() )
 258                                 $wgOut->addHtml( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
 259                         // show results
 260                         if( $textMatches->numRows() )
 261                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 262
 263                         $textMatches->free();
 264                 }
 265
 266                 if ( $num == 0 ) {
 267                         $wgOut->addWikiMsg( 'nonefound' );
 268                 }
 269                 if( $num || $this->offset ) {
 270                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 271                 }
 272                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
 273                 wfProfileOut( $fname );
 274         }
 275
 276         #------------------------------------------------------------------
 277         # Private methods below this line
 278
 279         /**
 280          *
 281          */
 282         function setupPage( $term ) {
 283                 global $wgOut;
 284                 if( !empty( $term ) ){
 285                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 286                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
 287                 }
 288                 $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
 289                 $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
 290                 $wgOut->setArticleRelated( false );
 291                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 292         }
 293
 294         /**
 295          * Extract "power search" namespace settings from the request object,
 296          * returning a list of index numbers to search.
 297          *
 298          * @param WebRequest $request
 299          * @return array
 300          * @private
 301          */
 302         function powerSearch( &$request ) {
 303                 $arr = array();
 304                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 305                         if( $request->getCheck( 'ns' . $ns ) ) {
 306                                 $arr[] = $ns;
 307                         }
 308                 }
 309                 return $arr;
 310         }
 311
 312         /**
 313          * Reconstruct the 'power search' options for links
 314          * @return array
 315          * @private
 316          */
 317         function powerSearchOptions() {
 318                 $opt = array();
 319                 foreach( $this->namespaces as $n ) {
 320                         $opt['ns' . $n] = 1;
 321                 }
 322                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 323                 return $opt;
 324         }
 325
 326         /**
 327          * Show whole set of results
 328          *
 329          * @param SearchResultSet $matches
 330          */
 331         function showMatches( &$matches ) {
 332                 $fname = 'SpecialSearch::showMatches';
 333                 wfProfileIn( $fname );
 334
 335                 global $wgContLang;
 336                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 337
 338                 $out = "";
 339
 340                 $infoLine = $matches->getInfo();
 341                 if( !is_null($infoLine) )
 342                         $out .= "\n<!-- {$infoLine} -->\n";
 343
 344
 345                 $off = $this->offset + 1;
 346                 $out .= "<ul class='mw-search-results'>\n";
 347
 348                 while( $result = $matches->next() ) {
 349                         $out .= $this->showHit( $result, $terms );
 350                 }
 351                 $out .= "</ul>\n";
 352
 353                 // convert the whole thing to desired language variant
 354                 global $wgContLang;
 355                 $out = $wgContLang->convert( $out );
 356                 wfProfileOut( $fname );
 357                 return $out;
 358         }
 359
 360         /**
 361          * Format a single hit result
 362          * @param SearchResult $result
 363          * @param array $terms terms to highlight
 364          */
 365         function showHit( $result, $terms ) {
 366                 $fname = 'SpecialSearch::showHit';
 367                 wfProfileIn( $fname );
 368                 global $wgUser, $wgContLang, $wgLang;
 369
 370                 if( $result->isBrokenTitle() ) {
 371                         wfProfileOut( $fname );
 372                         return "<!-- Broken link in search result -->\n";
 373                 }
 374
 375                 $t = $result->getTitle();
 376                 $sk = $wgUser->getSkin();
 377
 378                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 379
 380                 //If page content is not readable, just return the title.
 381                 //This is not quite safe, but better than showing excerpts from non-readable pages
 382                 //Note that hiding the entry entirely would screw up paging.
 383                 if (!$t->userCanRead()) {
 384                         wfProfileOut( $fname );
 385                         return "<li>{$link}</li>\n";
 386                 }
 387
 388                 // If the page doesn't *exist*... our search index is out of date.
 389                 // The least confusing at this point is to drop the result.
 390                 // You may get less results, but... oh well. :P
 391                 if( $result->isMissingRevision() ) {
 392                         wfProfileOut( $fname );
 393                         return "<!-- missing page " .
 394                                 htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 395                 }
 396
 397                 // format redirects / relevant sections
 398                 $redirectTitle = $result->getRedirectTitle();
 399                 $redirectText = $result->getRedirectSnippet($terms);
 400                 $sectionTitle = $result->getSectionTitle();
 401                 $sectionText = $result->getSectionSnippet($terms);
 402                 $redirect = '';
 403                 if( !is_null($redirectTitle) )
 404                         $redirect = "<span class='searchalttitle'>"
 405                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 406                                 ."</span>";
 407                 $section = '';
 408                 if( !is_null($sectionTitle) )
 409                         $section = "<span class='searchalttitle'>"
 410                                 .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
 411                                 ."</span>";
 412
 413                 // format text extract
 414                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 415
 416                 // format score
 417                 if( is_null( $result->getScore() ) ) {
 418                         // Search engine doesn't report scoring info
 419                         $score = '';
 420                 } else {
 421                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 422                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 423                                 . ' - ';
 424                 }
 425
 426                 // format description
 427                 $byteSize = $result->getByteSize();
 428                 $wordCount = $result->getWordCount();
 429                 $timestamp = $result->getTimestamp();
 430                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
 431                         $sk->formatSize( $byteSize ),
 432                         $wordCount );
 433                 $date = $wgLang->timeanddate( $timestamp );
 434
 435                 // link to related articles if supported
 436                 $related = '';
 437                 if( $result->hasRelated() ){
 438                         $st = SpecialPage::getTitleFor( 'Search' );
 439                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
 440                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
 441                                       'fulltext'  => wfMsg('search') ));
 442
 443                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
 444                                 wfMsg('search-relatedarticle').'</a>';
 445                 }
 446
 447                 // Include a thumbnail for media files...
 448                 if( $t->getNamespace() == NS_IMAGE ) {
 449                         $img = wfFindFile( $t );
 450                         if( $img ) {
 451                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 452                                 if( $thumb ) {
 453                                         $desc = $img->getShortDesc();
 454                                         wfProfileOut( $fname );
 455                                         // Ugly table. :D
 456                                         // Float doesn't seem to interact well with the bullets.
 457                                         // Table messes up vertical alignment of the bullet, but I'm
 458                                         // not sure what more I can do about that. :(
 459                                         return "<li>" .
 460                                                 '<table class="searchResultImage">' .
 461                                                 '<tr>' .
 462                                                 '<td width="120" align="center">' .
 463                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 464                                                 '</td>' .
 465                                                 '<td valign="top">' .
 466                                                 $link .
 467                                                 $extract .
 468                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 469                                                 '</td>' .
 470                                                 '</tr>' .
 471                                                 '</table>' .
 472                                                 "</li>\n";
 473                                 }
 474                         }
 475                 }
 476
 477                 wfProfileOut( $fname );
 478                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
 479                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 480                         "</li>\n";
 481
 482         }
 483
 484         /**
 485          * Show results from other wikis
 486          *
 487          * @param SearchResultSet $matches
 488          */
 489         function showInterwiki( &$matches, $query ) {
 490                 $fname = 'SpecialSearch::showInterwiki';
 491                 wfProfileIn( $fname );
 492
 493                 global $wgContLang;
 494                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 495
 496                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";
 497                 $off = $this->offset + 1;
 498                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
 499
 500                 // work out custom project captions
 501                 $customCaptions = array();
 502                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 503                 foreach($customLines as $line){
 504                         $parts = explode(":",$line,2);
 505                         if(count($parts) == 2) // validate line
 506                                 $customCaptions[$parts[0]] = $parts[1];
 507                 }
 508
 509
 510                 $prev = null;
 511                 while( $result = $matches->next() ) {
 512                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 513                         $prev = $result->getInterwikiPrefix();
 514                 }
 515                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 516                 $out .= "</ul></div>\n";
 517
 518                 // convert the whole thing to desired language variant
 519                 global $wgContLang;
 520                 $out = $wgContLang->convert( $out );
 521                 wfProfileOut( $fname );
 522                 return $out;
 523         }
 524
 525         /**
 526          * Show single interwiki link
 527          *
 528          * @param SearchResult $result
 529          * @param string $lastInterwiki
 530          * @param array $terms
 531          * @param string $query
 532          * @param array $customCaptions iw prefix -> caption
 533          */
 534         function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions){
 535                 $fname = 'SpecialSearch::showInterwikiHit';
 536                 wfProfileIn( $fname );
 537                 global $wgUser, $wgContLang, $wgLang;
 538
 539                 if( $result->isBrokenTitle() ) {
 540                         wfProfileOut( $fname );
 541                         return "<!-- Broken link in search result -->\n";
 542                 }
 543
 544                 $t = $result->getTitle();
 545                 $sk = $wgUser->getSkin();
 546
 547                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 548
 549                 // format redirect if any
 550                 $redirectTitle = $result->getRedirectTitle();
 551                 $redirectText = $result->getRedirectSnippet($terms);
 552                 $redirect = '';
 553                 if( !is_null($redirectTitle) )
 554                         $redirect = "<span class='searchalttitle'>"
 555                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 556                                 ."</span>";
 557
 558                 $out = "";
 559                 // display project name
 560                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
 561                         if( key_exists($t->getInterwiki(),$customCaptions) )
 562                                 // captions from 'search-interwiki-custom'
 563                                 $caption = $customCaptions[$t->getInterwiki()];
 564                         else{
 565                                 // default is to show the hostname of the other wiki which might suck
 566                                 // if there are many wikis on one hostname
 567                                 $parsed = parse_url($t->getFullURL());
 568                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 569                         }
 570                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 571                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 572                         $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
 573                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
 574                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
 575                 }
 576
 577                 $out .= "<li>{$link} {$redirect}</li>\n";
 578                 wfProfileOut( $fname );
 579                 return $out;
 580         }
 581
 582
 583         /**
 584          * Generates the power search box at bottom of [[Special:Search]]
 585          * @param $term string: search term
 586          * @return $out string: HTML form
 587          */
 588         function powerSearchBox( $term ) {
 589                 global $wgScript;
 590
 591                 $namespaces = '';
 592                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 593                         $name = str_replace( '_', ' ', $name );
 594                         if( '' == $name ) {
 595                                 $name = wfMsg( 'blanknamespace' );
 596                         }
 597                         $namespaces .= Xml::openElement( 'span', array( 'style' => 'white-space: nowrap' ) ) .
 598                                         Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
 599                                         Xml::closeElement( 'span' ) . "\n";
 600                 }
 601
 602                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
 603                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 604                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
 605                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
 606                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 607
 608                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
 609                         Xml::fieldset( wfMsg( 'powersearch-legend' ),
 610                                 Xml::hidden( 'title', $searchTitle->getPrefixedText() ) .
 611                                 "<p>" .
 612                                 wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
 613                                 "<br />" .
 614                                 $namespaces .
 615                                 "</p>" .
 616                                 "<p>" .
 617                                 $redirect . " " . $redirectLabel .
 618                                 "</p>" .
 619                                 wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
 620                                 "&nbsp;" .
 621                                 $searchField .
 622                                 "&nbsp;" .
 623                                 $searchButton ) .
 624                         "</form>";
 625
 626                 return $out;
 627         }
 628
 629         function powerSearchFocus() {
 630                 global $wgJsMimeType;
 631                 return "<script type=\"$wgJsMimeType\">" .
 632                         "hookEvent(\"load\", function(){" .
 633                                 "document.getElementById('powerSearchText').focus();" .
 634                         "});" .
 635                         "</script>";
 636         }
 637
 638         function shortDialog($term) {
 639                 global $wgScript;
 640
 641                 $out  = Xml::openElement( 'form', array(
 642                         'id' => 'search',
 643                         'method' => 'get',
 644                         'action' => $wgScript
 645                 ));
 646                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 647                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
 648                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
 649                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 650                         if( in_array( $ns, $this->namespaces ) ) {
 651                                 $out .= Xml::hidden( "ns{$ns}", '1' );
 652                         }
 653                 }
 654                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
 655                 $out .= Xml::closeElement( 'form' );
 656
 657                 return $out;
 658         }
 659 }