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<?php
namespace SMW\DataValues;
use SMW\DataTypeRegistry;
use SMW\Localizer;
use SMWDataItem as DataItem;
use SMWDataItemException as DataItemException;
use SMWDataValue as DataValue;
use SMWDIUri as DIUri;
use SpecialPageFactory;
use Title;
/**
* This datavalue implements special processing suitable for defining types of
* properties. Types behave largely like values of type SMWWikiPageValue
* with three main differences. First, they actively check if a value is an
* alias for another type, modifying the internal representation accordingly.
* Second, they have a modified display for emphasizing if some type is defined
* in SMW (built-in). Third, they use type ids for storing data (DB keys)
* instead of using page titles.
*
* @license GNU GPL v2+
* @since 3.0
*
* @author Markus Krötzsch
* @author mwjames
*/
class TypesValue extends DataValue {
/**
* DV identifier
*/
const TYPE_ID = '__typ';
/**
* @var string
*/
private $typeLabel;
/**
* @var string
*/
private $givenLabel;
/**
* @var string
*/
private $m_typeId;
/**
* @param string $typeid
*/
public function __construct( $typeid = '' ) {
parent::__construct( self::TYPE_ID );
}
/**
* @since 1.6
*
* @param string $typeId
*
* @return TypesValue
*/
public static function newFromTypeId( $typeId ) {
$result = new TypesValue( self::TYPE_ID );
try {
$dataItem = self::getTypeUriFromTypeId( $typeId );
} catch ( DataItemException $e ) {
$dataItem = self::getTypeUriFromTypeId( 'notype' );
}
$result->setDataItem( $dataItem );
return $result;
}
/**
* @since 1.6
*
* @param string $typeId
*
* @return DIUri
*/
public static function getTypeUriFromTypeId( $typeId ) {
return new DIUri( 'http', 'semantic-mediawiki.org/swivt/1.0', '', $typeId );
}
/**
* @see DataValue::getShortWikiText
*
* {@inheritDoc}
*/
public function getShortWikiText( $linker = null ) {
if ( !$linker || $this->m_outformat === '-' || $this->m_caption === '' ) {
return $this->m_caption;
}
$titleText = $this->makeSpecialPageTitleText();
$contentLanguage = Localizer::getInstance()->getLanguage(
$this->getOption( self::OPT_CONTENT_LANGUAGE )
);
$namespace = $contentLanguage->getNsText(
NS_SPECIAL
);
return "[[$namespace:$titleText|{$this->m_caption}]]";
}
/**
* @see DataValue::getShortHTMLText
*
* {@inheritDoc}
*/
public function getShortHTMLText( $linker = null ) {
if ( !$linker || $this->m_outformat === '-' || $this->m_caption === '' ) {
return htmlspecialchars( $this->m_caption );
}
$title = Title::makeTitle(
NS_SPECIAL,
$this->makeSpecialPageTitleText()
);
return $linker->link( $title, htmlspecialchars( $this->m_caption ) );
}
/**
* @see DataValue::getLongWikiText
*
* {@inheritDoc}
*/
public function getLongWikiText( $linker = null ) {
if ( !$linker || $this->typeLabel === '' ) {
return $this->typeLabel;
}
$titleText = $this->makeSpecialPageTitleText();
$contentLanguage = Localizer::getInstance()->getLanguage(
$this->getOption( self::OPT_CONTENT_LANGUAGE )
);
$namespace = $contentLanguage->getNsText(
NS_SPECIAL
);
return "[[$namespace:$titleText|{$this->typeLabel}]]";
}
/**
* @see DataValue::getLongHTMLText
*
* {@inheritDoc}
*/
public function getLongHTMLText( $linker = null ) {
if ( !$linker || $this->typeLabel === '' ) {
return htmlspecialchars( $this->typeLabel );
}
$title = Title::makeTitle(
NS_SPECIAL,
$this->makeSpecialPageTitleText()
);
return $linker->link( $title, htmlspecialchars( $this->typeLabel ) );
}
/**
* @see DataValue::getWikiValue
*
* {@inheritDoc}
*/
public function getWikiValue() {
return $this->typeLabel;
}
/**
* @see DataValue::loadDataItem
*
* {@inheritDoc}
*/
protected function parseUserValue( $value ) {
if ( $this->m_caption === false ) {
$this->m_caption = $value;
}
$valueParts = explode( ':', $value, 2 );
$contentLanguage = $this->getOption( self::OPT_CONTENT_LANGUAGE );
if ( $value !== '' && $value{0} === '_' ) {
$this->m_typeId = $value;
} else {
$this->givenLabel = smwfNormalTitleText( $value );
$this->m_typeId = DataTypeRegistry::getInstance()->findTypeByLabelAndLanguage( $this->givenLabel, $contentLanguage );
}
if ( $this->m_typeId === '' ) {
$this->addErrorMsg( [ 'smw_unknowntype', $this->givenLabel ] );
$this->typeLabel = $this->givenLabel;
} else {
$this->typeLabel = DataTypeRegistry::getInstance()->findTypeLabel( $this->m_typeId );
}
try {
$this->m_dataitem = self::getTypeUriFromTypeId( $this->m_typeId );
} catch ( DataItemException $e ) {
$this->m_dataitem = self::getTypeUriFromTypeId( 'notype' );
$this->addErrorMsg( [ 'smw-datavalue-type-invalid-typeuri', $this->m_typeId ] );
}
}
/**
* @see DataValue::loadDataItem
*
* {@inheritDoc}
*/
protected function loadDataItem( DataItem $dataItem ) {
if ( ( $dataItem instanceof DIUri ) && ( $dataItem->getScheme() == 'http' ) &&
( $dataItem->getHierpart() == 'semantic-mediawiki.org/swivt/1.0' ) &&
( $dataItem->getQuery() === '' ) ) {
$this->m_typeId = $dataItem->getFragment();
$this->typeLabel = DataTypeRegistry::getInstance()->findTypeLabel( $this->m_typeId );
$this->m_caption = $this->givenLabel = $this->typeLabel;
$this->m_dataitem = $dataItem;
return true;
}
return false;
}
protected function makeSpecialPageTitleText() {
return SpecialPageFactory::getLocalNameFor( 'Types', $this->typeLabel );
}
}
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