1 files changed, 173 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Specials/SpecialPageProperty.php b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Specials/SpecialPageProperty.php
new file mode 100644
index 00000000..d1b287f0
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/Specials/SpecialPageProperty.php
@@ -0,0 +1,173 @@
+<?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 );
+	}
+
+}