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<?php |
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namespace SMW\DataValues; |
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use SMW\DataValues\ValueFormatters\DispatchingDataValueFormatter; |
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use SMW\DataValues\ValueFormatters\MonolingualTextValueFormatter; |
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use SMW\DataValues\ValueFormatters\NoValueFormatter; |
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use SMW\DataValues\ValueFormatters\DataValueFormatter; |
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use SMWDataValue as DataValue; |
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/** |
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* @license GNU GPL v2+ |
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* @since 2.4 |
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* |
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* @author mwjames |
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*/ |
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class ValueFormatterRegistry { |
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/** |
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* @var ValueFormatterRegistry |
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*/ |
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private static $instance = null; |
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/** |
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* @var DispatchingDataValueFormatter |
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*/ |
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private $dispatchingDataValueFormatter = null; |
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/** |
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* @since 2.4 |
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* |
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* @param DispatchingDataValueFormatter|null $dispatchingDataValueFormatter |
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*/ |
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public function __construct( DispatchingDataValueFormatter $dispatchingDataValueFormatter = null ) { |
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$this->dispatchingDataValueFormatter = $dispatchingDataValueFormatter; |
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} |
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/** |
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* @since 2.4 |
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* |
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* @return self |
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*/ |
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public static function getInstance() { |
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if ( self::$instance === null ) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* @since 2.4 |
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*/ |
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public static function clear() { |
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self::$instance = null; |
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} |
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/** |
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* @note This allows extensions to inject their own DataValueFormatter |
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* without further violating SRP of the DataType or DataValue. |
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* |
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* @since 2.4 |
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* |
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* @param DataValueFormatter $dataValueFormatter |
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*/ |
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public function registerDataValueFormatter( DataValueFormatter $dataValueFormatter ) { |
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if ( $this->dispatchingDataValueFormatter === null ) { |
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$this->dispatchingDataValueFormatter = $this->newDispatchingDataValueFormatter(); |
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} |
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return $this->dispatchingDataValueFormatter->addDataValueFormatter( $dataValueFormatter ); |
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} |
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/** |
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* @since 2.4 |
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* |
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* @param DataValue $dataValue |
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* |
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* @return DataValueFormatter |
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*/ |
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public function getDataValueFormatterFor( DataValue $dataValue ) { |
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if ( $this->dispatchingDataValueFormatter === null ) { |
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$this->dispatchingDataValueFormatter = $this->newDispatchingDataValueFormatter(); |
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} |
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return $this->dispatchingDataValueFormatter->getDataValueFormatterFor( $dataValue ); |
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} |
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private function newDispatchingDataValueFormatter() { |
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$dispatchingDataValueFormatter = new DispatchingDataValueFormatter(); |
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$dispatchingDataValueFormatter->addDataValueFormatter( new MonolingualTextValueFormatter() ); |
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// To be checked only after DispatchingDataValueFormatter::addDataValueFormatter did |
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// not match any previous registered DataValueFormatters |
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$dispatchingDataValueFormatter->addDefaultDataValueFormatter( new NoValueFormatter() ); |
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return $dispatchingDataValueFormatter; |
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} |
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} |
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SemanticMediaWiki /
SemanticMediaWiki
