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<?php
namespace SMW\MediaWiki\Specials;
use SMW\ApplicationFactory;
use SMW\DataValueFactory;
use SMW\Encoder;
use SMW\MediaWiki\Specials\PageProperty\PageBuilder;
use SMW\Options;
use SMW\RequestOptions;
use SMWInfolink as Infolink;
use SpecialPage;
/**
* This special page implements a view on a object-relation pair, i.e. a page that
* shows all the values of a property for a certain page.
*
* This is typically used for overflow results from other dynamic output pages.
*
* @license GNU GPL v2+
* @since 1.4
*
* @author Denny Vrandecic
* @author mwjames
*/
class SpecialPageProperty extends SpecialPage {
/**
* @codeCoverageIgnore
*/
public function __construct() {
parent::__construct( 'PageProperty', '', false );
}
/**
* @see SpecialPage::execute
*/
public function execute( $query ) {
$request = $this->getRequest();
if ( $request->getText( 'cl', '' ) !== '' ) {
$query = Infolink::decodeCompactLink( 'cl:'. $request->getText( 'cl' ) );
} else {
$query = Infolink::decodeCompactLink( $query );
}
if ( $query !== '' ) {
$query = Encoder::unescape( $query );
}
// Get parameters
$pagename = $request->getVal( 'from' );
$propname = $request->getVal( 'type' );
// No GET parameters? Try the URL with the convention `PageName::PropertyName`
if ( $propname == '' ) {
$queryparts = explode( '::', $query );
$propname = $query;
if ( count( $queryparts ) > 1 ) {
$pagename = $queryparts[0];
$propname = implode( '::', array_slice( $queryparts, 1 ) );
}
}
$options = new Options(
[
'from' => $pagename,
'type' => $propname,
'property' => $propname,
'limit' => $request->getVal( 'limit', 20 ),
'offset' => $request->getVal( 'offset', 0 ),
]
);
$this->addHelpLink(
wfMessage( 'smw-special-pageproperty-helplink' )->escaped(),
true
);
$this->load( $options );
}
/**
* @see SpecialPage::getGroupName
*/
protected function getGroupName() {
return 'smw_group';
}
private function load( $options ) {
$applicationFactory = ApplicationFactory::getInstance();
$dataValueFactory = DataValueFactory::getInstance();
$subject = $dataValueFactory->newTypeIDValue(
'_wpg',
$options->get( 'from' )
);
$propertyValue = $dataValueFactory->newPropertyValueByLabel(
$options->get( 'property' )
);
$pagename = '';
$propname = '';
if ( $subject->isValid() ) {
$pagename = $subject->getPrefixedText();
}
if ( $propertyValue->isValid() ) {
$propname = $propertyValue->getWikiValue();
}
$options->set( 'from', $pagename );
$options->set( 'property', $propname );
$options->set( 'type', $propname );
$htmlFormRenderer = $applicationFactory->newMwCollaboratorFactory()->newHtmlFormRenderer(
$this->getContext()->getTitle(),
$this->getLanguage()
);
$pageBuilder = new PageBuilder(
$htmlFormRenderer,
$options
);
$html = '';
// No property given, no results
if ( $propname === '' ) {
$html .= $pageBuilder->buildForm();
$html .= wfMessage( 'smw_result_noresults' )->text();
} else {
$requestOptions = new RequestOptions();
$requestOptions->setLimit( $options->get( 'limit' ) + 1 );
$requestOptions->setOffset( $options->get( 'offset' ) );
$requestOptions->sort = true;
// Restrict the request otherwise the entire SemanticData record
// is fetched which can in case of a subject with a large
// subobject/subpage pool create excessive DB queries that are not
// used for the display
$requestOptions->conditionConstraint = true;
$dataItem = $pagename !== '' ? $subject->getDataItem() : null;
$results = $applicationFactory->getStore()->getPropertyValues(
$dataItem,
$propertyValue->getDataItem(),
$requestOptions
);
$html .= $pageBuilder->buildForm( count( $results ) );
$html .= $pageBuilder->buildHtml( $results );
}
$output = $this->getOutput();
$output->setPagetitle( wfMessage( 'pageproperty' )->text() );
$output->addModuleStyles( 'ext.smw.special.style' );
$output->addModules( 'ext.smw.tooltip' );
$output->addModules( 'ext.smw.autocomplete.property' );
$output->addModules( 'ext.smw.autocomplete.article' );
$output->addHTML( $html );
}
}
|
