Replaced all @fixme with "@todo Fixme" since doxygen doesn't have a @fixme command
[lhc/web/wiklou.git] / includes / specials / SpecialSearch.php
index f9d08f9..a58c95d 100644 (file)
  */
 function wfSpecialSearch( $par = '' ) {
        global $wgRequest, $wgUser;
-
        // Strip underscores from title parameter; most of the time we'll want
        // text form here. But don't strip underscores from actual text params!
        $titleParam = str_replace( '_', ' ', $par );
-       
+       // Fetch the search term
        $search = str_replace( "\n", " ", $wgRequest->getText( 'search', $titleParam ) );
        $searchPage = new SpecialSearch( $wgRequest, $wgUser );
-       if( $wgRequest->getVal( 'fulltext' ) 
-               || !is_null( $wgRequest->getVal( 'offset' )) 
-               || !is_null( $wgRequest->getVal( 'searchx' ))) {
-               $searchPage->showResults( $search, 'search' );
+       if( $wgRequest->getVal( 'fulltext' )
+               || !is_null( $wgRequest->getVal( 'offset' ))
+               || !is_null( $wgRequest->getVal( 'searchx' )) )
+       {
+               $searchPage->showResults( $search );
        } else {
                $searchPage->goResult( $search );
        }
@@ -60,93 +60,80 @@ class SpecialSearch {
         * @param User $user
         * @public
         */
-       function SpecialSearch( &$request, &$user ) {
+       function __construct( &$request, &$user ) {
                list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
-
+               $this->mPrefix = $request->getVal('prefix', '');
+               # Extract requested namespaces
                $this->namespaces = $this->powerSearch( $request );
                if( empty( $this->namespaces ) ) {
                        $this->namespaces = SearchEngine::userNamespaces( $user );
                }
-
                $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
+               $this->searchAdvanced = $request->getVal( 'advanced' );
+               $this->active = 'advanced';
+               $this->sk = $user->getSkin();
+               $this->didYouMeanHtml = ''; # html of did you mean... link
+               $this->fulltext = $request->getVal('fulltext');
        }
 
        /**
         * If an exact title match can be found, jump straight ahead to it.
         * @param string $term
-        * @public
         */
-       function goResult( $term ) {
+       public function goResult( $term ) {
                global $wgOut;
-               global $wgGoToEdit;
-
                $this->setupPage( $term );
-
                # Try to go to page as entered.
                $t = Title::newFromText( $term );
-
                # If the string cannot be used to create a title
-               if( is_null( $t ) ){
+               if( is_null( $t ) ) {
                        return $this->showResults( $term );
                }
-
                # If there's an exact or very near match, jump right there.
                $t = SearchEngine::getNearMatch( $term );
                if( !is_null( $t ) ) {
                        $wgOut->redirect( $t->getFullURL() );
                        return;
                }
-
                # No match, generate an edit URL
                $t = Title::newFromText( $term );
-               if( ! is_null( $t ) ) {
+               if( !is_null( $t ) ) {
+                       global $wgGoToEdit;
                        wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
                        # If the feature is enabled, go straight to the edit page
-                       if ( $wgGoToEdit ) {
-                               $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
+                       if( $wgGoToEdit ) {
+                               $wgOut->redirect( $t->getFullURL( array( 'action' => 'edit' ) ) );
                                return;
                        }
                }
-
-               $wgOut->wrapWikiMsg( "==$1==\n", 'notitlematches' );
-               if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
-                       $wgOut->addWikiMsg( 'noexactmatch', wfEscapeWikiText( $term ) );
-               } else {
-                       $wgOut->addWikiMsg( 'noexactmatch-nocreate', wfEscapeWikiText( $term ) );
-               }
-
                return $this->showResults( $term );
        }
 
        /**
         * @param string $term
-        * @public
         */
-       function showResults( $term ) {
-               $fname = 'SpecialSearch::showResults';
-               wfProfileIn( $fname );
-               global $wgOut, $wgUser;
-               $sk = $wgUser->getSkin();
+       public function showResults( $term ) {
+               global $wgOut, $wgUser, $wgDisableTextSearch, $wgContLang, $wgScript;
+               wfProfileIn( __METHOD__ );
 
-               $this->setupPage( $term );
+               $sk = $wgUser->getSkin();
 
-               $wgOut->addWikiMsg( 'searchresulttext' );
+               $this->searchEngine = SearchEngine::create();
+               $search =& $this->searchEngine;
+               $search->setLimitOffset( $this->limit, $this->offset );
+               $search->setNamespaces( $this->namespaces );
+               $search->showRedirects = $this->searchRedirects;
+               $search->prefix = $this->mPrefix;
+               $term = $search->transformSearchTerm($term);
 
-               if( '' === trim( $term ) ) {
-                       // Empty query -- straight view of search form
-                       $wgOut->setSubtitle( '' );
-                       $wgOut->addHTML( $this->powerSearchBox( $term ) );
-                       $wgOut->addHTML( $this->powerSearchFocus() );
-                       wfProfileOut( $fname );
-                       return;
-               }
+               $this->setupPage( $term );
 
-               global $wgDisableTextSearch;
-               if ( $wgDisableTextSearch ) {
+               if( $wgDisableTextSearch ) {
                        global $wgSearchForwardUrl;
                        if( $wgSearchForwardUrl ) {
                                $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
                                $wgOut->redirect( $url );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
                        global $wgInputEncoding;
@@ -161,134 +148,218 @@ class SpecialSearch {
                                ) .
                                Xml::closeElement( 'fieldset' )
                        );
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
 
-               $wgOut->addHTML( $this->shortDialog( $term ) );
+               $t = Title::newFromText( $term );
 
-               $search = SearchEngine::create();
-               $search->setLimitOffset( $this->limit, $this->offset );
-               $search->setNamespaces( $this->namespaces );
-               $search->showRedirects = $this->searchRedirects;
+               // fetch search results
                $rewritten = $search->replacePrefixes($term);
 
                $titleMatches = $search->searchTitle( $rewritten );
+               if( !($titleMatches instanceof SearchResultTooMany))
+                       $textMatches = $search->searchText( $rewritten );
+
+               // did you mean... suggestions
+               if( $textMatches && $textMatches->hasSuggestion() ) {
+                       $st = SpecialPage::getTitleFor( 'Search' );
+
+                       # mirror Go/Search behaviour of original request ..
+                       $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
+
+                       if($this->fulltext != null)
+                               $didYouMeanParams['fulltext'] = $this->fulltext;
+
+                       $stParams = array_merge(
+                               $didYouMeanParams,
+                               $this->powerSearchOptions()
+                       );
+
+                       $suggestionSnippet = $textMatches->getSuggestionSnippet();
+
+                       if( $suggestionSnippet == '' )
+                               $suggestionSnippet = null;
+
+                       $suggestLink = $sk->linkKnown(
+                               $st,
+                               $suggestionSnippet,
+                               array(),
+                               $stParams
+                       );
+
+                       $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
+               }
+               // start rendering the page
+               $wgOut->addHtml(
+                       Xml::openElement(
+                               'form',
+                               array(
+                                       'id' => ( $this->searchAdvanced ? 'powersearch' : 'search' ),
+                                       'method' => 'get',
+                                       'action' => $wgScript
+                               )
+                       )
+               );
+               $wgOut->addHtml(
+                       Xml::openElement( 'table', array( 'id'=>'mw-search-top-table', 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
+                       Xml::openElement( 'tr' ) .
+                       Xml::openElement( 'td' ) . "\n" .
+                       $this->shortDialog( $term ) .
+                       Xml::closeElement('td') .
+                       Xml::closeElement('tr') .
+                       Xml::closeElement('table')
+               );
 
                // Sometimes the search engine knows there are too many hits
-               if ($titleMatches instanceof SearchResultTooMany) {
+               if( $titleMatches instanceof SearchResultTooMany ) {
                        $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
-                       $wgOut->addHTML( $this->powerSearchBox( $term ) );
-                       $wgOut->addHTML( $this->powerSearchFocus() );
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
-               
-               $textMatches = $search->searchText( $rewritten );
 
-               // did you mean... suggestions
-               if($textMatches && $textMatches->hasSuggestion()){
-                       $st = SpecialPage::getTitleFor( 'Search' );                     
-                       $stParams = wfArrayToCGI( array( 
-                                       'search'        => $textMatches->getSuggestionQuery(), 
-                                       'fulltext'      => wfMsg('search')),
-                                       $this->powerSearchOptions());
-                                       
-                       $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
-                                       $textMatches->getSuggestionSnippet().'</a>';
-                                       
-                       $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
-               }
-
-               // show number of results
-               $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
-                       + ( $textMatches ? $textMatches->numRows() : 0);
-               $totalNum = 0;
-               if($titleMatches && !is_null($titleMatches->getTotalHits()))
-                       $totalNum += $titleMatches->getTotalHits();
-               if($textMatches && !is_null($textMatches->getTotalHits()))
-                       $totalNum += $textMatches->getTotalHits();
-               if ( $num > 0 ) {
-                       if ( $totalNum > 0 ){
-                               $top = wfMsgExt('showingresultstotal', array( 'parseinline' ), 
-                                       $this->offset+1, $this->offset+$num, $totalNum, $num );
-                       } elseif ( $num >= $this->limit ) {
-                               $top = wfShowingResults( $this->offset, $this->limit );
-                       } else {
-                               $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
-                       }
-                       $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
+               $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
+               if( '' === trim( $term ) || $filePrefix === trim( $term ) ) {
+                       $wgOut->addHTML( $this->searchFocus() );
+                       $wgOut->addHTML( $this->formHeader($term, 0, 0));
+                       if( $this->searchAdvanced ) {
+                               $wgOut->addHTML( $this->powerSearchBox( $term ) );
+                       } 
+                       $wgOut->addHTML( '</form>' );
+                       // Empty query -- straight view of search form
+                       wfProfileOut( __METHOD__ );
+                       return;
                }
 
+               // Get number of results
+               $titleMatchesNum = $titleMatches ? $titleMatches->numRows() : 0;
+               $textMatchesNum = $textMatches ? $textMatches->numRows() : 0;
+               // Total initial query matches (possible false positives)
+               $num = $titleMatchesNum + $textMatchesNum;
+               
+               // Get total actual results (after second filtering, if any)
+               $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
+                       $titleMatches->getTotalHits() : $titleMatchesNum;
+               $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
+                       $textMatches->getTotalHits() : $textMatchesNum;
+
+               // get total number of results if backend can calculate it
+               $totalRes = 0;
+               if($titleMatches && !is_null( $titleMatches->getTotalHits() ) )
+                       $totalRes += $titleMatches->getTotalHits();
+               if($textMatches && !is_null( $textMatches->getTotalHits() ))
+                       $totalRes += $textMatches->getTotalHits();
+                       
+               // show number of results and current offset
+               $wgOut->addHTML( $this->formHeader($term, $num, $totalRes));
+               if( $this->searchAdvanced ) {
+                       $wgOut->addHTML( $this->powerSearchBox( $term ) );
+               }
+               
+               $wgOut->addHtml( Xml::closeElement( 'form' ) );
+               $wgOut->addHtml( "<div class='searchresults'>" );
+
                // prev/next links
                if( $num || $this->offset ) {
+                       // Show the create link ahead
+                       $this->showCreateLink( $t );
                        $prevnext = wfViewPrevNext( $this->offset, $this->limit,
                                SpecialPage::getTitleFor( 'Search' ),
-                               wfArrayToCGI(
-                                       $this->powerSearchOptions(),
-                                       array( 'search' => $term ) ),
-                                       ($num < $this->limit) );
-                       $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
+                               wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
+                               max( $titleMatchesNum, $textMatchesNum ) < $this->limit
+                       );
+                       //$wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
                        wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
                } else {
                        wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
-               }
+               } 
 
                if( $titleMatches ) {
-                       if( $titleMatches->numRows() ) {
+                       if( $numTitleMatches > 0 ) {
                                $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
                                $wgOut->addHTML( $this->showMatches( $titleMatches ) );
                        }
                        $titleMatches->free();
                }
-
                if( $textMatches ) {
                        // output appropriate heading
-                       if( $textMatches->numRows() ) {
-                               if($titleMatches)
-                                       $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
-                               else // if no title matches the heading is redundant
-                                       $wgOut->addHTML("<hr/>");                                                               
-                       } elseif( $num == 0 ) {
+                       if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
+                               // if no title matches the heading is redundant
+                               $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
+                       } elseif( $totalRes == 0 ) {
                                # Don't show the 'no text matches' if we received title matches
-                               $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
+                               $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
                        }
                        // show interwiki results if any
-                       if( $textMatches->hasInterwikiResults() )
-                               $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
+                       if( $textMatches->hasInterwikiResults() ) {
+                               $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
+                       }
                        // show results
-                       if( $textMatches->numRows() )
+                       if( $numTextMatches > 0 ) {
                                $wgOut->addHTML( $this->showMatches( $textMatches ) );
+                       }
 
                        $textMatches->free();
                }
-
-               if ( $num == 0 ) {
-                       $wgOut->addWikiMsg( 'nonefound' );
+               if( $num === 0 ) {
+                       $wgOut->addWikiMsg( 'search-nonefound', wfEscapeWikiText( $term ) );
+                       $this->showCreateLink( $t );
+               }
+               $wgOut->addHtml( "</div>" );
+               if( $num === 0 ) {
+                       $wgOut->addHTML( $this->searchFocus() );
                }
+
                if( $num || $this->offset ) {
                        $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
                }
-               $wgOut->addHTML( $this->powerSearchBox( $term ) );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__ );
        }
-
-       #------------------------------------------------------------------
-       # Private methods below this line
        
+       protected function showCreateLink( $t ) {
+               global $wgOut;
+               
+               // show direct page/create link
+               if( !is_null($t) ) {
+                       if( !$t->isKnown() ) {
+                               $wgOut->addWikiMsg( 'searchmenu-new', wfEscapeWikiText( $t->getPrefixedText() ) );
+                       } else {
+                               $wgOut->addWikiMsg( 'searchmenu-exists', wfEscapeWikiText( $t->getPrefixedText() ) );
+                       }
+               } else {
+                       // preserve the paragraph for margins etc...
+                       $wgOut->addHTML('<p></p>');
+               }
+       }
+
        /**
         *
         */
-       function setupPage( $term ) {
+       protected function setupPage( $term ) {
                global $wgOut;
-               if( !empty( $term ) ){
+               // Figure out the active search profile header
+               $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
+               if( $this->searchAdvanced )
+                       $this->active = 'advanced';
+               else {
+                       $profiles = $this->getSearchProfiles();
+                       
+                       foreach( $profiles as $key => $data ) {
+                               if ( $this->namespaces == $data['namespaces'] && $key != 'advanced')
+                                       $this->active = $key;
+                       }
+                       
+               }
+               # Should advanced UI be used?
+               $this->searchAdvanced = ($this->active === 'advanced');
+               if( !empty( $term ) ) {
                        $wgOut->setPageTitle( wfMsg( 'searchresults') );
-                       $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
-               }                       
-               $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
-               $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
+                       $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
+               }
                $wgOut->setArticleRelated( false );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
+               // add javascript specific to special:search
+               $wgOut->addScriptFile( 'search.js' );
        }
 
        /**
@@ -297,9 +368,8 @@ class SpecialSearch {
         *
         * @param WebRequest $request
         * @return array
-        * @private
         */
-       function powerSearch( &$request ) {
+       protected function powerSearch( &$request ) {
                $arr = array();
                foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
                        if( $request->getCheck( 'ns' . $ns ) ) {
@@ -312,48 +382,45 @@ class SpecialSearch {
        /**
         * Reconstruct the 'power search' options for links
         * @return array
-        * @private
         */
-       function powerSearchOptions() {
+       protected function powerSearchOptions() {
                $opt = array();
                foreach( $this->namespaces as $n ) {
                        $opt['ns' . $n] = 1;
                }
                $opt['redirs'] = $this->searchRedirects ? 1 : 0;
+               if( $this->searchAdvanced ) {
+                       $opt['advanced'] = $this->searchAdvanced;
+               }
                return $opt;
        }
 
        /**
-        * Show whole set of results 
-        * 
+        * Show whole set of results
+        *
         * @param SearchResultSet $matches
         */
-       function showMatches( &$matches ) {
-               $fname = 'SpecialSearch::showMatches';
-               wfProfileIn( $fname );
-
+       protected function showMatches( &$matches ) {
                global $wgContLang;
+               wfProfileIn( __METHOD__ );
+
                $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 
                $out = "";
-               
                $infoLine = $matches->getInfo();
-               if( !is_null($infoLine) )
+               if( !is_null($infoLine) ) {
                        $out .= "\n<!-- {$infoLine} -->\n";
-                       
-               
+               }
                $off = $this->offset + 1;
                $out .= "<ul class='mw-search-results'>\n";
-
                while( $result = $matches->next() ) {
                        $out .= $this->showHit( $result, $terms );
                }
                $out .= "</ul>\n";
 
                // convert the whole thing to desired language variant
-               global $wgContLang;
                $out = $wgContLang->convert( $out );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__ );
                return $out;
        }
 
@@ -362,26 +429,38 @@ class SpecialSearch {
         * @param SearchResult $result
         * @param array $terms terms to highlight
         */
-       function showHit( $result, $terms ) {
-               $fname = 'SpecialSearch::showHit';
-               wfProfileIn( $fname );
-               global $wgUser, $wgContLang, $wgLang;
-               
+       protected function showHit( $result, $terms ) {
+               global $wgContLang, $wgLang, $wgUser;
+               wfProfileIn( __METHOD__ );
+
                if( $result->isBrokenTitle() ) {
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return "<!-- Broken link in search result -->\n";
                }
-               
-               $t = $result->getTitle();
+
                $sk = $wgUser->getSkin();
+               $t = $result->getTitle();
+
+               $titleSnippet = $result->getTitleSnippet($terms);
+
+               if( $titleSnippet == '' )
+                       $titleSnippet = null;
+               
+               $link_t = clone $t;
+               
+               wfRunHooks( 'ShowSearchHitTitle',
+                                       array( &$link_t, &$titleSnippet, $result, $terms, $this ) );
 
-               $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
+               $link = $this->sk->linkKnown(
+                       $link_t,
+                       $titleSnippet
+               );
 
                //If page content is not readable, just return the title.
                //This is not quite safe, but better than showing excerpts from non-readable pages
                //Note that hiding the entry entirely would screw up paging.
-               if (!$t->userCanRead()) {
-                       wfProfileOut( $fname );
+               if( !$t->userCanRead() ) {
+                       wfProfileOut( __METHOD__ );
                        return "<li>{$link}</li>\n";
                }
 
@@ -389,9 +468,8 @@ class SpecialSearch {
                // The least confusing at this point is to drop the result.
                // You may get less results, but... oh well. :P
                if( $result->isMissingRevision() ) {
-                       wfProfileOut( $fname );
-                       return "<!-- missing page " .
-                               htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
+                       wfProfileOut( __METHOD__ );
+                       return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
                }
 
                // format redirects / relevant sections
@@ -400,19 +478,42 @@ class SpecialSearch {
                $sectionTitle = $result->getSectionTitle();
                $sectionText = $result->getSectionSnippet($terms);
                $redirect = '';
-               if( !is_null($redirectTitle) )
-                       $redirect = "<span class='searchalttitle'>"
-                               .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
-                               ."</span>";
+
+               if( !is_null($redirectTitle) ) {
+                       if( $redirectText == '' )
+                               $redirectText = null;
+
+                       $redirect = "<span class='searchalttitle'>" .
+                               wfMsg(
+                                       'search-redirect',
+                                       $this->sk->linkKnown(
+                                               $redirectTitle,
+                                               $redirectText
+                                       )
+                               ) .
+                               "</span>";
+               }
+
                $section = '';
-               if( !is_null($sectionTitle) )
-                       $section = "<span class='searchalttitle'>" 
-                               .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
-                               ."</span>";
+
+
+               if( !is_null($sectionTitle) ) {
+                       if( $sectionText == '' )
+                               $sectionText = null;
+
+                       $section = "<span class='searchalttitle'>" .
+                               wfMsg(
+                                       'search-section', $this->sk->linkKnown(
+                                               $sectionTitle,
+                                               $sectionText
+                                       )
+                               ) .
+                               "</span>";
+               }
 
                // format text extract
                $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
-               
+
                // format score
                if( is_null( $result->getScore() ) ) {
                        // Search engine doesn't report scoring info
@@ -427,39 +528,49 @@ class SpecialSearch {
                $byteSize = $result->getByteSize();
                $wordCount = $result->getWordCount();
                $timestamp = $result->getTimestamp();
-               $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
-                       $sk->formatSize( $byteSize ),
-                       $wordCount );
+               $size = wfMsgExt(
+                       'search-result-size',
+                       array( 'parsemag', 'escape' ),
+                       $this->sk->formatSize( $byteSize ),
+                       $wgLang->formatNum( $wordCount )
+               );
                $date = $wgLang->timeanddate( $timestamp );
 
                // link to related articles if supported
                $related = '';
-               if( $result->hasRelated() ){
+               if( $result->hasRelated() ) {
                        $st = SpecialPage::getTitleFor( 'Search' );
-                       $stParams = wfArrayToCGI( $this->powerSearchOptions(),
-                               array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
-                                     'fulltext'  => wfMsg('search') ));
-                       
-                       $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'. 
-                               wfMsg('search-relatedarticle').'</a>';
+                       $stParams = array_merge(
+                               $this->powerSearchOptions(),
+                               array(
+                                       'search' => wfMsgForContent( 'searchrelated' ) . ':' . $t->getPrefixedText(),
+                                       'fulltext' => wfMsg( 'search' )
+                               )
+                       );
+
+                       $related = ' -- ' . $sk->linkKnown(
+                               $st,
+                               wfMsg('search-relatedarticle'),
+                               array(),
+                               $stParams
+                       );
                }
-                               
+
                // Include a thumbnail for media files...
-               if( $t->getNamespace() == NS_IMAGE ) {
+               if( $t->getNamespace() == NS_FILE ) {
                        $img = wfFindFile( $t );
                        if( $img ) {
                                $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
                                if( $thumb ) {
                                        $desc = $img->getShortDesc();
-                                       wfProfileOut( $fname );
-                                       // Ugly table. :D
+                                       wfProfileOut( __METHOD__ );
                                        // Float doesn't seem to interact well with the bullets.
-                                       // Table messes up vertical alignment of the bullet, but I'm
-                                       // not sure what more I can do about that. :(
+                                       // Table messes up vertical alignment of the bullets.
+                                       // Bullets are therefore disabled (didn't look great anyway).
                                        return "<li>" .
                                                '<table class="searchResultImage">' .
                                                '<tr>' .
-                                               '<td width="120" align="center">' .
+                                               '<td width="120" align="center" valign="top">' .
                                                $thumb->toHtml( array( 'desc-link' => true ) ) .
                                                '</td>' .
                                                '<td valign="top">' .
@@ -474,7 +585,7 @@ class SpecialSearch {
                        }
                }
 
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__ );
                return "<li>{$link} {$redirect} {$section} {$extract}\n" .
                        "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
                        "</li>\n";
@@ -483,177 +594,413 @@ class SpecialSearch {
 
        /**
         * Show results from other wikis
-        * 
+        *
         * @param SearchResultSet $matches
         */
-       function showInterwiki( &$matches, $query ) {
-               $fname = 'SpecialSearch::showInterwiki';
-               wfProfileIn( $fname );
-
+       protected function showInterwiki( &$matches, $query ) {
                global $wgContLang;
+               wfProfileIn( __METHOD__ );
                $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 
-               $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";             
+               $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
+                       wfMsg('search-interwiki-caption')."</div>\n";
                $off = $this->offset + 1;
-               $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
+               $out .= "<ul class='mw-search-iwresults'>\n";
 
                // work out custom project captions
                $customCaptions = array();
                $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
-               foreach($customLines as $line){
+               foreach($customLines as $line) {
                        $parts = explode(":",$line,2);
                        if(count($parts) == 2) // validate line
-                               $customCaptions[$parts[0]] = $parts[1]; 
+                               $customCaptions[$parts[0]] = $parts[1];
                }
-               
-               
+
                $prev = null;
                while( $result = $matches->next() ) {
                        $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
                        $prev = $result->getInterwikiPrefix();
                }
-               // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
+               // TODO: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
                $out .= "</ul></div>\n";
 
                // convert the whole thing to desired language variant
-               global $wgContLang;
                $out = $wgContLang->convert( $out );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__ );
                return $out;
        }
-       
+
        /**
         * Show single interwiki link
         *
         * @param SearchResult $result
         * @param string $lastInterwiki
         * @param array $terms
-        * @param string $query 
+        * @param string $query
         * @param array $customCaptions iw prefix -> caption
         */
-       function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions){
-               $fname = 'SpecialSearch::showInterwikiHit';
-               wfProfileIn( $fname );
-               global $wgUser, $wgContLang, $wgLang;
-               
+       protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
+               wfProfileIn( __METHOD__ );
+               global $wgContLang, $wgLang;
+
                if( $result->isBrokenTitle() ) {
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return "<!-- Broken link in search result -->\n";
                }
-               
+
                $t = $result->getTitle();
-               $sk = $wgUser->getSkin();
-               
-               $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
-                               
+
+               $titleSnippet = $result->getTitleSnippet($terms);
+
+               if( $titleSnippet == '' )
+                       $titleSnippet = null;
+
+               $link = $this->sk->linkKnown(
+                       $t,
+                       $titleSnippet
+               );
+
                // format redirect if any
                $redirectTitle = $result->getRedirectTitle();
                $redirectText = $result->getRedirectSnippet($terms);
                $redirect = '';
-               if( !is_null($redirectTitle) )
-                       $redirect = "<span class='searchalttitle'>"
-                               .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
-                               ."</span>";
+               if( !is_null($redirectTitle) ) {
+                       if( $redirectText == '' )
+                               $redirectText = null;
+
+                       $redirect = "<span class='searchalttitle'>" .
+                               wfMsg(
+                                       'search-redirect',
+                                       $this->sk->linkKnown(
+                                               $redirectTitle,
+                                               $redirectText
+                                       )
+                               ) .
+                               "</span>";
+               }
 
                $out = "";
-               // display project name 
-               if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
+               // display project name
+               if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
                        if( key_exists($t->getInterwiki(),$customCaptions) )
                                // captions from 'search-interwiki-custom'
                                $caption = $customCaptions[$t->getInterwiki()];
                        else{
-                               // default is to show the hostname of the other wiki which might suck 
+                               // default is to show the hostname of the other wiki which might suck
                                // if there are many wikis on one hostname
                                $parsed = parse_url($t->getFullURL());
-                               $caption = wfMsg('search-interwiki-default', $parsed['host']); 
-                       }               
+                               $caption = wfMsg('search-interwiki-default', $parsed['host']);
+                       }
                        // "more results" link (special page stuff could be localized, but we might not know target lang)
-                       $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");                        
-                       $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
-                               wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search'))); 
-                       $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
+                       $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
+                       $searchLink = $this->sk->linkKnown(
+                               $searchTitle,
+                               wfMsg('search-interwiki-more'),
+                               array(),
+                               array(
+                                       'search' => $query,
+                                       'fulltext' => 'Search'
+                               )
+                       );
+                       $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
+                               {$searchLink}</span>{$caption}</div>\n<ul>";
                }
 
-               $out .= "<li>{$link} {$redirect}</li>\n"; 
-               wfProfileOut( $fname );
+               $out .= "<li>{$link} {$redirect}</li>\n";
+               wfProfileOut( __METHOD__ );
                return $out;
        }
-       
+
 
        /**
         * Generates the power search box at bottom of [[Special:Search]]
         * @param $term string: search term
         * @return $out string: HTML form
         */
-       function powerSearchBox( $term ) {
-               global $wgScript;
-
-               $namespaces = '';
-               foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
+       protected function powerSearchBox( $term ) {
+               global $wgScript, $wgContLang;
+               
+               // Groups namespaces into rows according to subject
+               $rows = array();
+               foreach( SearchEngine::searchableNamespaces() as $namespace => $name ) {
+                       $subject = MWNamespace::getSubject( $namespace );
+                       if( !array_key_exists( $subject, $rows ) ) {
+                               $rows[$subject] = "";
+                       }
                        $name = str_replace( '_', ' ', $name );
-                       if( '' == $name ) {
+                       if( $name == '' ) {
                                $name = wfMsg( 'blanknamespace' );
                        }
-                       $namespaces .= Xml::openElement( 'span', array( 'style' => 'white-space: nowrap' ) ) .
-                                       Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
-                                       Xml::closeElement( 'span' ) . "\n";
+                       $rows[$subject] .=
+                               Xml::openElement(
+                                       'td', array( 'style' => 'white-space: nowrap' )
+                               ) .
+                               Xml::checkLabel(
+                                       $name,
+                                       "ns{$namespace}",
+                                       "mw-search-ns{$namespace}",
+                                       in_array( $namespace, $this->namespaces )
+                               ) .
+                               Xml::closeElement( 'td' );
                }
-
-               $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
-               $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
-               $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
-               $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
-               $searchTitle = SpecialPage::getTitleFor( 'Search' );
+               $rows = array_values( $rows );
+               $numRows = count( $rows );
                
-               $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
-                       Xml::fieldset( wfMsg( 'powersearch-legend' ),
-                               Xml::hidden( 'title', $searchTitle->getPrefixedText() ) .
-                               "<p>" .
-                               wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
-                               "<br />" .
-                               $namespaces .
-                               "</p>" .
-                               "<p>" .
-                               $redirect . " " . $redirectLabel .
-                               "</p>" .
-                               wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
-                               "&nbsp;" .
-                               $searchField .
-                               "&nbsp;" .
-                               $searchButton ) .
-                       "</form>";
+               // Lays out namespaces in multiple floating two-column tables so they'll
+               // be arranged nicely while still accommodating different screen widths
+               $namespaceTables = '';
+               for( $i = 0; $i < $numRows; $i += 4 ) {
+                       $namespaceTables .= Xml::openElement(
+                               'table',
+                               array( 'cellpadding' => 0, 'cellspacing' => 0, 'border' => 0 )
+                       );
+                       for( $j = $i; $j < $i + 4 && $j < $numRows; $j++ ) {
+                               $namespaceTables .= Xml::tags( 'tr', null, $rows[$j] );
+                       }
+                       $namespaceTables .= Xml::closeElement( 'table' );
+               }
+               // Show redirects check only if backend supports it
+               $redirects = '';
+               if( $this->searchEngine->acceptListRedirects() ) {
+                       $redirects =
+                               Xml::check(
+                                       'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' )
+                               ) .
+                               ' ' .
+                               Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
+               }
+               // Return final output
+               return
+                       Xml::openElement(
+                               'fieldset',
+                               array( 'id' => 'mw-searchoptions', 'style' => 'margin:0em;' )
+                       ) .
+                       Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
+                       Xml::tags( 'h4', null, wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) ) .
+                       Xml::tags(
+                               'div',
+                               array( 'id' => 'mw-search-togglebox' ),
+                               Xml::label( wfMsg( 'powersearch-togglelabel' ), 'mw-search-togglelabel' ) .
+                                       Xml::element(
+                                               'input',
+                                               array(
+                                                       'type'=>'button',
+                                                       'id' => 'mw-search-toggleall',
+                                                       'onclick' => 'mwToggleSearchCheckboxes("all");',
+                                                       'value' => wfMsg( 'powersearch-toggleall' )
+                                               )
+                                       ) .
+                                       Xml::element(
+                                               'input',
+                                               array(
+                                                       'type'=>'button',
+                                                       'id' => 'mw-search-togglenone',
+                                                       'onclick' => 'mwToggleSearchCheckboxes("none");',
+                                                       'value' => wfMsg( 'powersearch-togglenone' )
+                                               )
+                                       )
+                       ) .
+                       Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
+                       $namespaceTables .
+                       Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
+                       $redirects .
+                       Xml::hidden( 'title', SpecialPage::getTitleFor( 'Search' )->getPrefixedText() ) .
+                       Xml::hidden( 'advanced', $this->searchAdvanced ) .
+                       Xml::hidden( 'fulltext', 'Advanced search' ) .
+                       Xml::closeElement( 'fieldset' );
+       }
 
-               return $out;
+       protected function searchFocus() {
+               return Html::inlineScript(
+                       "hookEvent(\"load\", function() {" .
+                               "document.getElementById('searchText').focus();" .
+                       "});" );
        }
+       
+       protected function getSearchProfiles() {
+               // Builds list of Search Types (profiles)
+               $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
+               
+               $profiles = array(
+                       'default' => array(
+                               'message' => 'searchprofile-articles',
+                               'tooltip' => 'searchprofile-articles-tooltip',
+                               'namespaces' => SearchEngine::defaultNamespaces(),
+                               'namespace-messages' => SearchEngine::namespacesAsText(
+                                       SearchEngine::defaultNamespaces()
+                               ),
+                       ),
+                       'images' => array(
+                               'message' => 'searchprofile-images',
+                               'tooltip' => 'searchprofile-images-tooltip',
+                               'namespaces' => array( NS_FILE ),
+                       ),
+                       'help' => array(
+                               'message' => 'searchprofile-project',
+                               'tooltip' => 'searchprofile-project-tooltip',
+                               'namespaces' => SearchEngine::helpNamespaces(),
+                               'namespace-messages' => SearchEngine::namespacesAsText(
+                                       SearchEngine::helpNamespaces()
+                               ),
+                       ),
+                       'all' => array(
+                               'message' => 'searchprofile-everything',
+                               'tooltip' => 'searchprofile-everything-tooltip',
+                               'namespaces' => $nsAllSet,
+                       ),
+                       'advanced' => array(
+                               'message' => 'searchprofile-advanced',
+                               'tooltip' => 'searchprofile-advanced-tooltip',
+                               'namespaces' => $this->namespaces,
+                               'parameters' => array( 'advanced' => 1 ),
+                       )
+               );
+               
+               wfRunHooks( 'SpecialSearchProfiles', array( &$profiles ) );
 
-       function powerSearchFocus() {
-               global $wgJsMimeType;
-               return "<script type=\"$wgJsMimeType\">" .
-                       "hookEvent(\"load\", function(){" .
-                               "document.getElementById('powerSearchText').focus();" .
-                       "});" .
-                       "</script>";
+               foreach( $profiles as $key => &$data ) {
+                       sort($data['namespaces']);
+               }
+               
+               return $profiles;
        }
 
-       function shortDialog($term) {
-               global $wgScript;
+       protected function formHeader( $term, $resultsShown, $totalNum ) {
+               global $wgContLang, $wgLang;
+               
+               $out = Xml::openElement('div', array( 'class' =>  'mw-search-formheader' ) );
+               
+               $bareterm = $term;
+               if( $this->startsWithImage( $term ) ) {
+                       // Deletes prefixes
+                       $bareterm = substr( $term, strpos( $term, ':' ) + 1 );
+               }
 
-               $out  = Xml::openElement( 'form', array(
-                       'id' => 'search',
-                       'method' => 'get',
-                       'action' => $wgScript
-               ));
-               $searchTitle = SpecialPage::getTitleFor( 'Search' );
-               $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
-               $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
-               foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
-                       if( in_array( $ns, $this->namespaces ) ) {
+               
+               $profiles = $this->getSearchProfiles();
+               
+               // Outputs XML for Search Types
+               $out .= Xml::openElement( 'div', array( 'class' => 'search-types' ) );
+               $out .= Xml::openElement( 'ul' );
+               foreach ( $profiles as $id => $profile ) {
+                       $tooltipParam = isset( $profile['namespace-messages'] ) ?
+                               $wgLang->commaList( $profile['namespace-messages'] ) : null;
+                       $out .= Xml::tags(
+                               'li',
+                               array(
+                                       'class' => $this->active == $id ? 'current' : 'normal'
+                               ),
+                               $this->makeSearchLink(
+                                       $bareterm,
+                                       $profile['namespaces'],
+                                       wfMsg( $profile['message'] ),
+                                       wfMsg( $profile['tooltip'], $tooltipParam ),
+                                       isset( $profile['parameters'] ) ? $profile['parameters'] : array() 
+                               )
+                       );
+               }
+               $out .= Xml::closeElement( 'ul' );
+               $out .= Xml::closeElement('div') ;
+
+               // Results-info
+               if ( $resultsShown > 0 ) {
+                       if ( $totalNum > 0 ){
+                               $top = wfMsgExt( 'showingresultsheader', array( 'parseinline' ),
+                                       $wgLang->formatNum( $this->offset + 1 ),
+                                       $wgLang->formatNum( $this->offset + $resultsShown ),
+                                       $wgLang->formatNum( $totalNum ),
+                                       wfEscapeWikiText( $term ),
+                                       $wgLang->formatNum( $resultsShown )
+                               );
+                       } elseif ( $resultsShown >= $this->limit ) {
+                               $top = wfShowingResults( $this->offset, $this->limit );
+                       } else {
+                               $top = wfShowingResultsNum( $this->offset, $this->limit, $resultsShown );
+                       }
+                       $out .= Xml::tags( 'div', array( 'class' => 'results-info' ),
+                               Xml::tags( 'ul', null, Xml::tags( 'li', null, $top ) )
+                       );
+               }
+               
+               $out .= Xml::element( 'div', array( 'style' => 'clear:both' ), '', false );
+               $out .= Xml::closeElement('div');
+               
+               // Adds hidden namespace fields
+               if ( !$this->searchAdvanced ) {
+                       foreach( $this->namespaces as $ns ) {
                                $out .= Xml::hidden( "ns{$ns}", '1' );
                        }
                }
-               $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
-               $out .= Xml::closeElement( 'form' );
-
+               
                return $out;
        }
+
+       protected function shortDialog( $term ) {
+               $searchTitle = SpecialPage::getTitleFor( 'Search' );
+               $searchable = SearchEngine::searchableNamespaces();
+               $out = Html::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
+               // Keep redirect setting
+               $out .= Html::hidden( "redirs", (int)$this->searchRedirects ) . "\n";
+               // Term box
+               $out .= Html::input( 'search', $term, 'search', array(
+                       'id' => 'searchText',
+                       'size' => '50',
+                       'autofocus'
+               ) ) . "\n";
+               $out .= Html::hidden( 'fulltext', 'Search' ) . "\n";
+               $out .= Xml::submitButton( wfMsg( 'searchbutton' ) ) . "\n";
+               return $out . $this->didYouMeanHtml;            
+       }
+
+       /** Make a search link with some target namespaces */
+       protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
+               $opt = $params;
+               foreach( $namespaces as $n ) {
+                       $opt['ns' . $n] = 1;
+               }
+               $opt['redirs'] = $this->searchRedirects ? 1 : 0;
+
+               $st = SpecialPage::getTitleFor( 'Search' );
+               $stParams = array_merge(
+                       array(
+                               'search' => $term,
+                               'fulltext' => wfMsg( 'search' )
+                       ),
+                       $opt
+               );
+
+               return Xml::element(
+                       'a',
+                       array(
+                               'href' => $st->getLocalURL( $stParams ),
+                               'title' => $tooltip, 
+                               'onmousedown' => 'mwSearchHeaderClick(this);',
+                               'onkeydown' => 'mwSearchHeaderClick(this);'),
+                       $label
+               );
+       }
+
+       /** Check if query starts with image: prefix */
+       protected function startsWithImage( $term ) {
+               global $wgContLang;
+
+               $p = explode( ':', $term );
+               if( count( $p ) > 1 ) {
+                       return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
+               }
+               return false;
+       }
+       
+       /** Check if query starts with all: prefix */
+       protected function startsWithAll( $term ) {
+
+               $allkeyword = wfMsgForContent('searchall');
+               
+               $p = explode( ':', $term );
+               if( count( $p ) > 1 ) {
+                       return $p[0]  == $allkeyword;
+               }
+               return false;
+       }
 }
+