SemanticMediaWiki/specials/AskSpecial/SMW_SpecialAsk.php

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<?php

class SMWAskPage extends SpecialPage {

        protected $m_querystring = '';
        protected $m_params = array();
        protected $m_printouts = array();
        protected $m_editquery = false;

        public function __construct() {
                parent::__construct( 'Ask' );
        }

        public function execute( $p ) {
                global $wgOut, $wgRequest, $smwgQEnabled;

                $this->setHeaders();
                wfProfileIn( 'doSpecialAsk (SMW)' );

                if ( !$smwgQEnabled ) {
                        $wgOut->addHTML( '<br />' . wfMsg( 'smw_iq_disabled' ) );
                } else {
                        if ( $wgRequest->getCheck( 'showformatoptions' ) ) {
                                // handle Ajax action
                                $format = $wgRequest->getVal( 'showformatoptions' );
                                $params = $wgRequest->getArray( 'params' );
                                $wgOut->disable();
                                echo $this->showFormatOptions( $format, $params );
                        } else {
                                $this->extractQueryParameters( $p );
                                $this->makeHTMLResult();
                        }
                }

                SMWOutputs::commitToOutputPage( $wgOut ); // make sure locally collected output data is pushed to the output!
                wfProfileOut( 'doSpecialAsk (SMW)' );
        }

        protected function extractQueryParameters( $p ) {
                global $wgRequest, $smwgQMaxInlineLimit;

                // First make all inputs into a simple parameter list that can again be parsed into components later.
                if ( $wgRequest->getCheck( 'q' ) ) { // called by own Special, ignore full param string in that case
                        $query_val = $wgRequest->getVal( 'p' );

                        if ( !empty( $query_val ) )
                                // p is used for any additional parameters in certain links.
                                $rawparams = SMWInfolink::decodeParameters( $query_val, false );
                        else {
                                $query_values = $wgRequest->getArray( 'p' );

                                if ( is_array( $query_values ) ) {
                                        foreach ( $query_values as $key => $val ) {
                                                if ( empty( $val ) ) unset( $query_values[$key] );
                                        }
                                }

                                // p is used for any additional parameters in certain links.
                                $rawparams = SMWInfolink::decodeParameters( $query_values, false );
                        }
                } else { // called from wiki, get all parameters
                        $rawparams = SMWInfolink::decodeParameters( $p, true );
                }

                // Check for q= query string, used whenever this special page calls itself (via submit or plain link):
                $this->m_querystring = $wgRequest->getText( 'q' );
                if ( $this->m_querystring !== '' ) {
                        $rawparams[] = $this->m_querystring;
                }

                // Check for param strings in po (printouts), appears in some links and in submits:
                $paramstring = $wgRequest->getText( 'po' );

                if ( $paramstring !== '' ) { // parameters from HTML input fields
                        $ps = explode( "\n", $paramstring ); // params separated by newlines here (compatible with text-input for printouts)

                        foreach ( $ps as $param ) { // add initial ? if omitted (all params considered as printouts)
                                $param = trim( $param );

                                if ( ( $param !== '' ) && ( $param { 0 } != '?' ) ) {
                                        $param = '?' . $param;
                                }

                                $rawparams[] = $param;
                        }
                }

                // Now parse parameters and rebuilt the param strings for URLs.
                SMWQueryProcessor::processFunctionParams( $rawparams, $this->m_querystring, $this->m_params, $this->m_printouts );

                // Try to complete undefined parameter values from dedicated URL params.
                if ( !array_key_exists( 'format', $this->m_params ) ) {
                        $this->m_params['format'] = 'broadtable';
                }

                if ( !array_key_exists( 'order', $this->m_params ) ) {
                        $order_values = $wgRequest->getArray( 'order' );

                        if ( is_array( $order_values ) ) {
                                $this->m_params['order'] = '';

                                foreach ( $order_values as $order_value ) {
                                        if ( $order_value === '' ) $order_value = 'ASC';
                                        $this->m_params['order'] .= ( $this->m_params['order'] !== '' ? ',' : '' ) . $order_value;
                                }
                        }
                }

                $this->m_num_sort_values = 0;

                if  ( !array_key_exists( 'sort', $this->m_params ) ) {
                        $sort_values = $wgRequest->getArray( 'sort' );
                        if ( is_array( $sort_values ) ) {
                                $this->m_params['sort'] = implode( ',', $sort_values );
                                $this->m_num_sort_values = count( $sort_values );
                        }
                }

                if ( !array_key_exists( 'offset', $this->m_params ) ) {
                        $this->m_params['offset'] = $wgRequest->getVal( 'offset' );
                        if ( $this->m_params['offset'] === '' )  $this->m_params['offset'] = 0;
                }

                if ( !array_key_exists( 'limit', $this->m_params ) ) {
                        $this->m_params['limit'] = $wgRequest->getVal( 'limit' );

                        if ( $this->m_params['limit'] === '' ) {
                                 $this->m_params['limit'] = ( $this->m_params['format'] == 'rss' ) ? 10 : 20; // Standard limit for RSS.
                        }
                }

                $this->m_params['limit'] = min( $this->m_params['limit'], $smwgQMaxInlineLimit );

                $this->m_editquery = ( $wgRequest->getVal( 'eq' ) == 'yes' ) || ( $this->m_querystring === '' );
        }

        protected static function addAutocompletionJavascriptAndCSS() {
                global $wgOut, $smwgScriptPath, $smwgJQueryIncluded, $smwgJQueryUIIncluded;

                // Add CSS and JavaScript for jQuery and jQuery UI.
                $wgOut->addExtensionStyle( "$smwgScriptPath/skins/jquery-ui/base/jquery.ui.all.css" );

                $scripts = array();

                if ( !$smwgJQueryIncluded ) {
                        $realFunction = array( $wgOut, 'includeJQuery' );
                        if ( is_callable( $realFunction ) ) {
                                $wgOut->includeJQuery();
                        } else {
                                $scripts[] = "$smwgScriptPath/libs/jquery-1.4.2.min.js";
                        }

                        $smwgJQueryIncluded = true;
                }

                if ( !$smwgJQueryUIIncluded ) {
                        $scripts[] = "$smwgScriptPath/libs/jquery-ui/jquery.ui.core.min.js";
                        $scripts[] = "$smwgScriptPath/libs/jquery-ui/jquery.ui.widget.min.js";
                        $scripts[] = "$smwgScriptPath/libs/jquery-ui/jquery.ui.position.min.js";
                        $scripts[] = "$smwgScriptPath/libs/jquery-ui/jquery.ui.autocomplete.min.js";
                        $smwgJQueryUIIncluded = true;
                }

                foreach ( $scripts as $js ) {
                        $wgOut->addScriptFile( $js );
                }

                $javascript_autocomplete_text = <<<END
<script type="text/javascript">
function split(val) {
        return val.split('\\n');
}
function extractLast(term) {
        return split(term).pop();
}
function escapeQuestion(term){
        if (term.substring(0, 1) == "?") {
                return term.substring(1);
        } else {
                return term;
        }
}

/* extending jQuery functions for custom highligting */
jQuery.ui.autocomplete.prototype._renderItem = function( ul, item) {
        var term_without_q = escapeQuestion(extractLast(this.term));
        var re = new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term_without_q.replace("/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi", "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi");
        var loc = item.label.search(re);
        if (loc >= 0) {
                var t = item.label.substr(0, loc) + '<strong>' + item.label.substr(loc, term_without_q.length) + '</strong>' + item.label.substr(loc + term_without_q.length);
        } else {
                var t = item.label;
        }
        jQuery( "<li></li>" )
                .data( "item.autocomplete", item )
                .append( " <a>" + t + "</a>" )
                .appendTo( ul );
};

jQuery.extend( jQuery.ui.autocomplete, {
        filter: function(array, term) {
                var matcher = new RegExp("\\\b" + jQuery.ui.autocomplete.escapeRegex(term), "i" );
                return jQuery.grep( array, function(value) {
                        return matcher.test( value.label || value.value || value );
                });
        }
});

jQuery(document).ready(function(){
        jQuery("#add_property").autocomplete({
                minLength: 2,
                source: function(request, response) {
                        request.term=request.term.substr(request.term.lastIndexOf("\\n")+1);
                        url=wgScriptPath+'/api.php?action=opensearch&limit=10&namespace='+wgNamespaceIds['property']+'&format=jsonfm&search=';

                        jQuery.getJSON(url+request.term, function(data){
                                //remove the namespace prefix 'Property:' from returned data and add prefix '?'
                                for(i=0;i<data[1].length;i++) data[1][i]="?"+data[1][i].substr(data[1][i].indexOf(':')+1);
                                response(jQuery.ui.autocomplete.filter(data[1], escapeQuestion(extractLast(request.term))));
                        });
                },
                focus: function() {
                        // prevent value inserted on focus
                        return false;
                },
                select: function(event, ui) {
                        var terms = split( this.value );
                        // remove the current input
                        terms.pop();
                        // add the selected item
                        terms.push( ui.item.value );
                        // add placeholder to get the comma-and-space at the end
                        terms.push("");
                        this.value = terms.join("\\n");
                        return false;
                }
        });
});
</script>

END;

                $wgOut->addScript( $javascript_autocomplete_text );
        }

        protected function makeHTMLResult() {
                global $wgOut, $smwgAutocompleteInSpecialAsk;

                $delete_msg = wfMsg( 'delete' );

                // Javascript code for the dynamic parts of the page
                $javascript_text = <<<END
<script type="text/javascript">
function updateOtherOptions(strURL) {
        jQuery.ajax({ url: strURL, context: document.body, success: function(data){
                jQuery("#other_options").html(data);
        }});
}

// code for handling adding and removing the "sort" inputs
var num_elements = {$this->m_num_sort_values};

function addInstance(starter_div_id, main_div_id) {
        var starter_div = document.getElementById(starter_div_id);
        var main_div = document.getElementById(main_div_id);

        //Create the new instance
        var new_div = starter_div.cloneNode(true);
        var div_id = 'sort_div_' + num_elements;
        new_div.className = 'multipleTemplate';
        new_div.id = div_id;
        new_div.style.display = 'block';

        var children = new_div.getElementsByTagName('*');
        var x;
        for (x = 0; x < children.length; x++) {
                if (children[x].name)
                        children[x].name = children[x].name.replace(/_num/, '[' + num_elements + ']');
        }

        //Create 'delete' link
        var remove_button = document.createElement('span');
        remove_button.innerHTML = '[<a href="javascript:removeInstance(\'sort_div_' + num_elements + '\')">{$delete_msg}</a>]';
        new_div.appendChild(remove_button);

        //Add the new instance
        main_div.appendChild(new_div);
        num_elements++;
}

function removeInstance(div_id) {
        var olddiv = document.getElementById(div_id);
        var parent = olddiv.parentNode;
        parent.removeChild(olddiv);
}
</script>

END;

                $wgOut->addScript( $javascript_text );

                if ( $smwgAutocompleteInSpecialAsk ) {
                        self::addAutocompletionJavascriptAndCSS();
                }

                $result = '';
                $result_mime = false; // output in MW Special page as usual

                // build parameter strings for URLs, based on current settings
                $urlArgs['q'] = $this->m_querystring;

                $tmp_parray = array();
                foreach ( $this->m_params as $key => $value ) {
                        if ( !in_array( $key, array( 'sort', 'order', 'limit', 'offset', 'title' ) ) ) {
                                $tmp_parray[$key] = $value;
                        }
                }

                $urlArgs['p'] = SMWInfolink::encodeParameters( $tmp_parray );
                $printoutstring = '';

                foreach ( $this->m_printouts as /* SMWPrintRequest */ $printout ) {
                        $printoutstring .= $printout->getSerialisation() . "\n";
                }

                if ( $printoutstring !== '' ) $urlArgs['po'] = $printoutstring;
                if ( array_key_exists( 'sort', $this->m_params ) )  $urlArgs['sort'] = $this->m_params['sort'];
                if ( array_key_exists( 'order', $this->m_params ) ) $urlArgs['order'] = $this->m_params['order'];

                if ( $this->m_querystring !== '' ) {
                        // FIXME: this is a hack
                        SMWQueryProcessor::addThisPrintout( $this->m_printouts, $this->m_params );
                        $params = SMWQueryProcessor::getProcessedParams( $this->m_params, $this->m_printouts );
                        $this->m_params['format'] = $params['format'];

                        $queryobj = SMWQueryProcessor::createQuery(
                                $this->m_querystring,
                                $params,
                                SMWQueryProcessor::SPECIAL_PAGE ,
                                $this->m_params['format'],
                                $this->m_printouts
                        );

                        $res = smwfGetStore()->getQueryResult( $queryobj );

                        // Try to be smart for rss/ical if no description/title is given and we have a concept query:
                        if ( $this->m_params['format'] == 'rss' ) {
                                $desckey = 'rssdescription';
                                $titlekey = 'rsstitle';
                        } elseif ( $this->m_params['format'] == 'icalendar' ) {
                                $desckey = 'icalendardescription';
                                $titlekey = 'icalendartitle';
                        } else { $desckey = false; }

                        if ( ( $desckey ) && ( $queryobj->getDescription() instanceof SMWConceptDescription ) &&
                             ( !isset( $this->m_params[$desckey] ) || !isset( $this->m_params[$titlekey] ) ) ) {
                                $concept = $queryobj->getDescription()->getConcept();

                                if ( !isset( $this->m_params[$titlekey] ) ) {
                                        $this->m_params[$titlekey] = $concept->getText();
                                }

                                if ( !isset( $this->m_params[$desckey] ) ) {
                                        // / @bug The current SMWStore will never return SMWConceptValue (an SMWDataValue) here; it might return SMWDIConcept (an SMWDataItem)
                                        $dv = end( smwfGetStore()->getPropertyValues( SMWWikiPageValue::makePageFromTitle( $concept ), new SMWDIProperty( '_CONC' ) ) );
                                        if ( $dv instanceof SMWConceptValue ) {
                                                $this->m_params[$desckey] = $dv->getDocu();
                                        }
                                }
                        }

                        $printer = SMWQueryProcessor::getResultPrinter( $this->m_params['format'], SMWQueryProcessor::SPECIAL_PAGE );
                        $result_mime = $printer->getMimeType( $res );

                        global $wgRequest;

                        $hidequery = $wgRequest->getVal( 'eq' ) == 'no';

                        // if it's an export format (like CSV, JSON, etc.),
                        // don't actually export the data if 'eq' is set to
                        // either 'yes' or 'no' in the query string - just
                        // show the link instead
                        if ( $this->m_editquery || $hidequery ) $result_mime = false;

                        if ( $result_mime == false ) {
                                if ( $res->getCount() > 0 ) {
                                        if ( $this->m_editquery ) {
                                                $urlArgs['eq'] = 'yes';
                                        }
                                        elseif ( $hidequery ) {
                                                $urlArgs['eq'] = 'no';
                                        }

                                        $navigation = $this->getNavigationBar( $res, $urlArgs );
                                        $result .= '<div style="text-align: center;">' . "\n" . $navigation . "\n</div>\n";
                                        $query_result = $printer->getResult( $res, $params, SMW_OUTPUT_HTML );

                                        if ( is_array( $query_result ) ) {
                                                $result .= $query_result[0];
                                        } else {
                                                $result .= $query_result;
                                        }

                                        $result .= '<div style="text-align: center;">' . "\n" . $navigation . "\n</div>\n";
                                } else {
                                        $result = '<div style="text-align: center;">' . wfMsgHtml( 'smw_result_noresults' ) . '</div>';
                                }
                        } else { // make a stand-alone file
                                $result = $printer->getResult( $res, $params, SMW_OUTPUT_FILE );
                                $result_name = $printer->getFileName( $res ); // only fetch that after initialising the parameters
                        }
                }

                if ( $result_mime == false ) {
                        if ( $this->m_querystring ) {
                                $wgOut->setHTMLtitle( $this->m_querystring );
                        } else {
                                $wgOut->setHTMLtitle( wfMsg( 'ask' ) );
                        }

                        $urlArgs['offset'] = $this->m_params['offset'];
                        $urlArgs['limit'] = $this->m_params['limit'];

                        $result = $this->getInputForm(
                                $printoutstring,
                                wfArrayToCGI( $urlArgs )
                        ) . $result;

                        $wgOut->addHTML( $result );
                } else {
                        $wgOut->disable();

                        header( "Content-type: $result_mime; charset=UTF-8" );

                        if ( $result_name !== false ) {
                                header( "content-disposition: attachment; filename=$result_name" );
                        }

                        echo $result;
                }
        }

        protected function getInputForm( $printoutstring, $urltail ) {
                global $smwgQSortingSupport, $smwgResultFormats, $wgScript;

                $result = '';

                if ( $this->m_editquery ) {
                        $result .= Html::openElement( 'form',
                                array( 'action' => $wgScript, 'name' => 'ask', 'method' => 'get' ) );
                        $result .= Html::hidden( 'title', $this->getTitle()->getPrefixedDBKey() );

                        // Table for main query and printouts.
                        $result .= '<table style="width: 100%;"><tr><th>' . wfMsg( 'smw_ask_queryhead' ) . "</th>\n<th>" . wfMsg( 'smw_ask_printhead' ) . "<br />\n" .
                                '<span style="font-weight: normal;">' . wfMsg( 'smw_ask_printdesc' ) . '</span>' . "</th></tr>\n" .
                                '<tr><td style="padding-right: 7px;"><textarea name="q" cols="20" rows="6">' . htmlspecialchars( $this->m_querystring ) . "</textarea></td>\n" .
                                '<td style="padding-left: 7px;"><textarea id = "add_property" name="po" cols="20" rows="6">' . htmlspecialchars( $printoutstring ) . '</textarea></td></tr></table>' . "\n";
// @TODO
                        // sorting inputs
                        if ( $smwgQSortingSupport ) {
                                if ( ! array_key_exists( 'sort', $this->m_params ) || ! array_key_exists( 'order', $this->m_params ) ) {
                                        $orders = array(); // do not even show one sort input here
                                } else {
                                        $sorts = explode( ',', $this->m_params['sort'] );
                                        $orders = explode( ',', $this->m_params['order'] );
                                        reset( $sorts );
                                }

                                foreach ( $orders as $i => $order ) {
                                        $result .=  "<div id=\"sort_div_$i\">" . wfMsg( 'smw_ask_sortby' ) . ' <input type="text" name="sort[' . $i . ']" value="' .
                                                    htmlspecialchars( $sorts[$i] ) . "\" size=\"35\"/>\n" . '<select name="order[' . $i . ']"><option ';

                                        if ( $order == 'ASC' ) $result .= 'selected="selected" ';
                                        $result .=  'value="ASC">' . wfMsg( 'smw_ask_ascorder' ) . '</option><option ';
                                        if ( $order == 'DESC' ) $result .= 'selected="selected" ';

                                        $result .=  'value="DESC">' . wfMsg( 'smw_ask_descorder' ) . "</option></select>\n";
                                        $result .= '[<a href="javascript:removeInstance(\'sort_div_' . $i . '\')">' . wfMsg( 'delete' ) . '</a>]' . "\n";
                                        $result .= "</div>\n";
                                }

                                $result .=  '<div id="sorting_starter" style="display: none">' . wfMsg( 'smw_ask_sortby' ) . ' <input type="text" name="sort_num" size="35" />' . "\n";
                                $result .= ' <select name="order_num">' . "\n";
                                $result .= '    <option value="ASC">' . wfMsg( 'smw_ask_ascorder' ) . "</option>\n";
                                $result .= '    <option value="DESC">' . wfMsg( 'smw_ask_descorder' ) . "</option>\n</select>\n";
                                $result .= "</div>\n";
                                $result .= '<div id="sorting_main"></div>' . "\n";
                                $result .= '<a href="javascript:addInstance(\'sorting_starter\', \'sorting_main\')">' . wfMsg( 'smw_add_sortcondition' ) . '</a>' . "\n";
                        }

                        $printer = SMWQueryProcessor::getResultPrinter( 'broadtable', SMWQueryProcessor::SPECIAL_PAGE );
                        $url = SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( "showformatoptions=' + this.value + '" );

                        foreach ( $this->m_params as $param => $value ) {
                                if ( $param !== 'format' ) {
                                        $url .= '&params[' . Xml::escapeJsString( $param ) . ']=' . Xml::escapeJsString( $value );
                                }
                        }

                        $result .= "<br /><br />\n<p>" . wfMsg( 'smw_ask_format_as' ) . ' <input type="hidden" name="eq" value="yes"/>' . "\n" .
                                '<select id="formatSelector" name="p[format]" onChange="JavaScript:updateOtherOptions(\'' . $url . '\')">' . "\n" .
                                '       <option value="broadtable"' . ( $this->m_params['format'] == 'broadtable' ? ' selected' : '' ) . '>' .
                                $printer->getName() . ' (' . wfMsg( 'smw_ask_defaultformat' ) . ')</option>' . "\n";

                        $formats = array();

                        foreach ( array_keys( $smwgResultFormats ) as $format ) {
                                // Special formats "count" and "debug" currently not supported.
                                if ( $format != 'broadtable' && $format != 'count' && $format != 'debug' ) {
                                        $printer = SMWQueryProcessor::getResultPrinter( $format, SMWQueryProcessor::SPECIAL_PAGE );
                                        $formats[$format] = $printer->getName();
                                }
                        }

                        natcasesort( $formats );

                        foreach ( $formats as $format => $name ) {
                                $result .= '    <option value="' . $format . '"' . ( $this->m_params['format'] == $format ? ' selected' : '' ) . '>' . $name . "</option>\n";
                        }

                        $result .= "</select></p>\n";
                        $result .= '<fieldset><legend>' . wfMsg( 'smw_ask_otheroptions' ) . "</legend>\n";
                        $result .= "<div id=\"other_options\">" . $this->showFormatOptions( $this->m_params['format'], $this->m_params ) . "</div>";
                        $result .= "</fieldset>\n";
                        $urltail = str_replace( '&eq=yes', '', $urltail ) . '&eq=no'; // FIXME: doing it wrong, srysly

                        $result .= '<br /><input type="submit" value="' . wfMsg( 'smw_ask_submit' ) . '"/>' .
                                '<input type="hidden" name="eq" value="yes"/>' .
                                        Html::element(
                                                'a',
                                                array(
                                                        'href' => SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( $urltail ),
                                                        'rel' => 'nofollow'
                                                ),
                                                wfMsg( 'smw_ask_hidequery' )
                                        ) .
                                        '| ' . SMWAskPage::getEmbedToggle() .
                                        '| <a href="' . htmlspecialchars( wfMsg( 'smw_ask_doculink' ) ) . '">' . wfMsg( 'smw_ask_help' ) . '</a>' .
                                "\n</form>";
                } else { // if $this->m_editquery == false
                        $urltail = str_replace( '&eq=no', '', $urltail ) . '&eq=yes';
                        $result .= '<p>' .
                                Html::element(
                                        'a',
                                        array(
                                                'href' => SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( $urltail ),
                                                'rel' => 'nofollow'
                                        ),
                                        wfMsg( 'smw_ask_editquery' )
                                ) .
                                '| ' . SMWAskPage::getEmbedToggle() .
                                '</p>';
                }
        //show|hide inline embed code
                $result .= '<div id="inlinequeryembed" style="display: none"><div id="inlinequeryembedinstruct">' . wfMsg( 'smw_ask_embed_instr' ) . '</div><textarea id="inlinequeryembedarea" readonly="yes" cols="20" rows="6" onclick="this.select()">' .
                        '{{#ask:' . htmlspecialchars( $this->m_querystring ) . "\n";

                foreach ( $this->m_printouts as $printout ) {
                        $result .= '|' . $printout->getSerialisation() . "\n";
                }

                foreach ( $this->m_params as $param_name => $param_value ) {
                        $result .= '|' . htmlspecialchars( $param_name ) . '=' . htmlspecialchars( $param_value ) . "\n";
                }

                $result .= '}}</textarea></div><br />';

                return $result;
        }

        protected static function getEmbedToggle() {
                return '<span id="embed_show"><a href="#" rel="nofollow" onclick="' .
                        "document.getElementById('inlinequeryembed').style.display='block';" .
                        "document.getElementById('embed_hide').style.display='inline';" .
                        "document.getElementById('embed_show').style.display='none';" .
                        "document.getElementById('inlinequeryembedarea').select();" .
                        '">' . wfMsg( 'smw_ask_show_embed' ) . '</a></span>' .
                        '<span id="embed_hide" style="display: none"><a href="#" rel="nofollow" onclick="' .
                        "document.getElementById('inlinequeryembed').style.display='none';" .
                        "document.getElementById('embed_show').style.display='inline';" .
                        "document.getElementById('embed_hide').style.display='none';" .
                        '">' . wfMsg( 'smw_ask_hide_embed' ) . '</a></span>';
        }

        protected function getNavigationBar( SMWQueryResult $res, array $urlArgs ) {
                global $smwgQMaxInlineLimit;

                $offset = $this->m_params['offset'];
                $limit  = $this->m_params['limit'];

                // Prepare navigation bar.
                if ( $offset > 0 ) {
                        $navigation = Html::element(
                                'a',
                                array(
                                        'href' => SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( array(
                                                'offset' => max( 0, $offset - $limit ),
                                                'limit' => $limit
                                        ) + $urlArgs ),
                                        'rel' => 'nofollow'
                                ),
                                wfMsg( 'smw_result_prev' )
                        );

                } else {
                        $navigation = wfMsg( 'smw_result_prev' );
                }

                $navigation .=
                        '&#160;&#160;&#160;&#160; <b>' .
                                wfMsg( 'smw_result_results' ) . ' ' . ( $offset + 1 ) .
                        '&#150; ' .
                                ( $offset + $res->getCount() ) .
                        '</b>&#160;&#160;&#160;&#160;';

                if ( $res->hasFurtherResults() ) {
                        $navigation .= Html::element(
                                'a',
                                array(
                                        'href' => SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( array(
                                                'offset' => ( $offset + $limit ),
                                                'limit' => $limit
                                        )  + $urlArgs ),
                                        'rel' => 'nofollow'
                                ),
                                wfMsg( 'smw_result_next' )
                        );
                } else {
                        $navigation .= wfMsg( 'smw_result_next' );
                }

                $first = true;

                foreach ( array( 20, 50, 100, 250, 500 ) as $l ) {
                        if ( $l > $smwgQMaxInlineLimit ) break;

                        if ( $first ) {
                                $navigation .= '&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;(';
                                $first = false;
                        } else {
                                $navigation .= ' | ';
                        }

                        if ( $limit != $l ) {
                                $navigation .= Html::element(
                                        'a',
                                        array(
                                                'href' => SpecialPage::getSafeTitleFor( 'Ask' )->getLocalURL( array(
                                                        'offset' => $offset,
                                                        'limit' => $l
                                                ) + $urlArgs ),
                                                'rel' => 'nofollow'
                                        ),
                                        $l
                                );
                        } else {
                                $navigation .= '<b>' . $l . '</b>';
                        }
                }

                $navigation .= ')';

                return $navigation;
        }

        protected function showFormatOptions( $format, array $paramValues ) {
                $printer = SMWQueryProcessor::getResultPrinter( $format, SMWQueryProcessor::SPECIAL_PAGE );

                $params = SMWQueryProcessor::getParameters();

                if ( method_exists( $printer, 'getValidatorParameters' ) ) {
                        $params = array_merge( $params, $printer->getValidatorParameters() );
                }

                $optionsHtml = array();

                foreach ( $params as $param ) {
                        // Ignore the format parameter, as we got a special control in the GUI for it already.
                        if ( $param->getName() == 'format' ) {
                                continue;
                        }

                        $currentValue = array_key_exists( $param->getName(), $paramValues ) ? $paramValues[$param->getName()] : false;

                        $optionsHtml[] =
                                Html::rawElement(
                                        'div',
                                        array(
                                                'style' => 'width: 30%; padding: 5px; float: left;'
                                        ),
                                        htmlspecialchars( $param->getName() ) . ': ' .
                                        $this->showFormatOption( $param, $currentValue ) .
                                        '<br />' .
                                        Html::element( 'em', array(), $param->getDescription() )
                                );
                }

                for ( $i = 0, $n = count( $optionsHtml ); $i < $n; $i++ ) {
                        if ( $i % 3 == 2 || $i == $n - 1 ) {
                                $optionsHtml[$i] .= "<div style=\"clear: both\";></div>\n";
                        }
                }

                $i = 0;
                $rowHtml = '';
                $resultHtml = '';

                while ( $option = array_shift( $optionsHtml ) ) {
                        $rowHtml .= $option;
                        $i++;

                        $resultHtml .= Html::rawElement(
                                'div',
                                array(
                                        'style' => 'background: ' . ( $i % 6 == 0 ? 'white' : '#dddddd' ) . ';'
                                ),
                                $rowHtml
                        );

                        $rowHtml = '';
                }

                return $resultHtml;
        }



        protected function showFormatOption( Parameter $parameter, $currentValue ) {
                $input = new ParameterInput( $parameter );
                $input->setInputName( 'p[' . $parameter->getName() . ']' );

                if ( $currentValue !== false ) {
                        $input->setCurrentValue( $currentValue );
                }

                return $input->getHtml();
        }

}

---