SemanticMediaWiki/specials/SearchTriple/SMW_SpecialPageProperty.php

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<?php
class SMWPageProperty extends SpecialPage {

        public function __construct() {
                parent::__construct( 'PageProperty', '', false );
        }

        public function execute( $query ) {
                global $wgRequest, $wgOut;
                $linker = smwfGetLinker();
                $this->setHeaders();

                // Get parameters
                $pagename = $wgRequest->getVal( 'from' );
                $propname = $wgRequest->getVal( 'type' );
                $limit = $wgRequest->getVal( 'limit' );
                $offset = $wgRequest->getVal( 'offset' );

                if ( $limit === '' ) $limit =  20;
                if ( $offset === '' ) $offset = 0;

                if ( $propname === '' ) { // No GET parameters? Try the URL:
                        $queryparts = explode( '::', $query );
                        $propname = $query;
                        if ( count( $queryparts ) > 1 ) {
                                $pagename = $queryparts[0];
                                $propname = implode( '::', array_slice( $queryparts, 1 ) );
                        }
                }

                $subject = SMWDataValueFactory::newTypeIDValue( '_wpg', $pagename );
                $pagename = $subject->isValid() ? $subject->getPrefixedText() : '';
                $property = SMWPropertyValue::makeUserProperty( $propname );
                $propname = $property->isValid() ? $property->getWikiValue() : '';

                // Produce output
                $html = '';
                if ( ( $propname === '' ) ) { // no property given, show a message
                        $html .= wfMsg( 'smw_pp_docu' ) . "\n";
                } else { // property given, find and display results
                        // FIXME: very ugly, needs i18n
                        $wgOut->setPagetitle( ( $pagename !== '' ? $pagename . ' ':'' ) . $property->getWikiValue() );

                        // get results (get one more, to see if we have to add a link to more)
                        $options = new SMWRequestOptions();
                        $options->limit = $limit + 1;
                        $options->offset = $offset;
                        $options->sort = true;
                        $results = smwfGetStore()->getPropertyValues( $pagename !== '' ? $subject->getDataItem() : null, $property->getDataItem(), $options );

                        // prepare navigation bar if needed
                        if ( ( $offset > 0 ) || ( count( $results ) > $limit ) ) {
                                if ( $offset > 0 ) {
                                        $navigation = Html::element(
                                                'a',
                                                array(
                                                        'href' => $this->getTitle()->getLocalURL( array(
                                                                'offset' => max( 0, $offset - $limit ),
                                                                'limit' => $limit,
                                                                'type' => $propname,
                                                                'from' => $pagename
                                                        ) )
                                                ),
                                                wfMsg( 'smw_result_prev' )
                                        );
                                } else {
                                        $navigation = wfMsg( 'smw_result_prev' );
                                }

                                $navigation .=
                                        '&#160;&#160;&#160;&#160; <b>' .
                                                wfMsg( 'smw_result_results' ) . ' ' .
                                                ( $offset + 1 ) . '– ' . ( $offset + min( count( $results ), $limit ) ) .
                                        '</b>&#160;&#160;&#160;&#160;';

                                if ( count( $results ) == ( $limit + 1 ) ) {
                                        $navigation = Html::element(
                                                'a',
                                                array(
                                                        'href' => $this->getTitle()->getLocalURL( array(
                                                                'offset' => ( $offset + $limit ),
                                                                'limit' => $limit,
                                                                'type' => $propname,
                                                                'from' => $pagename
                                                        ) )
                                                ),
                                                wfMsg( 'smw_result_next' )
                                        );
                                } else {
                                        $navigation .= wfMsg( 'smw_result_next' );
                                }
                        } else {
                                $navigation = '';
                        }

                        // display results
                        $html .= '<br />' . $navigation;
                        if ( count( $results ) == 0 ) {
                                $html .= wfMsg( 'smw_result_noresults' );
                        } else {
                                $html .= "<ul>\n";
                                $count = $limit + 1;

                                foreach ( $results as $di ) {
                                        $count--;
                                        if ( $count < 1 ) continue;

                                        $dv = SMWDataValueFactory::newDataItemValue( $di, $property->getDataItem() );
                                        $html .= '<li>' . $dv->getLongHTMLText( $linker ); // do not show infolinks, the magnifier "+" is ambiguous with the browsing '+' for '_wpg' (see below)

                                        if ( $property->getDataItem()->findPropertyTypeID() == '_wpg' ) {
                                                $browselink = SMWInfolink::newBrowsingLink( '+', $dv->getLongWikiText() );
                                                $html .= ' &#160;' . $browselink->getHTML( $linker );
                                        }

                                        $html .=  "</li> \n";
                                }

                                $html .= "</ul>\n";
                        }

                        $html .= $navigation;
                }

                // Display query form
                $spectitle = $this->getTitle();
                $html .= '<p>&#160;</p>';
                $html .= '<form name="pageproperty" action="' . htmlspecialchars( $spectitle->getLocalURL() ) . '" method="get">' . "\n" .
                         '<input type="hidden" name="title" value="' . $spectitle->getPrefixedText() . '"/>' ;
                $html .= wfMsg( 'smw_pp_from' ) . ' <input type="text" name="from" value="' . htmlspecialchars( $pagename ) . '" />' . "&#160;&#160;&#160;\n";
                $html .= wfMsg( 'smw_pp_type' ) . ' <input type="text" name="type" value="' . htmlspecialchars( $propname ) . '" />' . "\n";
                $html .= '<input type="submit" value="' . wfMsg( 'smw_pp_submit' ) . "\"/>\n</form>\n";

                $wgOut->addHTML( $html );
                SMWOutputs::commitToOutputPage( $wgOut ); // make sure locally collected output data is pushed to the output!
        }

}

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