/**
* @since 2.4
*
* @param DIProperty $property
*/
public function fetchConversionData(DIProperty $property)
{
$this->unitIds = array();
$this->unitFactors = array();
$this->mainUnit = false;
$this->prefixalUnitPreference = array();
$this->errors = array();
$factors = $this->cachedPropertyValuesPrefetcher->getPropertyValues($property->getDiWikiPage(), new DIProperty('_CONV'));
$this->numberValue->setContextPage($property->getDiWikiPage());
if ($factors === null || $factors === array()) {
// no custom type
return $this->errors[] = 'smw_nounitsdeclared';
}
$number = '';
$unit = '';
foreach ($factors as $di) {
// ignore corrupted data and bogus inputs
if (!$di instanceof DIBlob || $this->numberValue->parseNumberValue($di->getString(), $number, $unit, $asPrefix) != 0 || $number == 0) {
continue;
}
$this->matchUnitAliases($number, $asPrefix, preg_split('/\\s*,\\s*/u', $unit));
}
// No unit with factor 1? Make empty string the main unit.
if ($this->mainUnit === false) {
$this->mainUnit = '';
}
// Always add an extra empty unit; not as a synonym for the main unit
// but as a new unit with ID '' so if users do not give any unit, the
// conversion tooltip will still display the main unit for clarity
// (the empty unit is never displayed; we filter it when making
// conversion values)
$this->unitFactors = array('' => 1) + $this->unitFactors;
$this->unitIds[''] = '';
}
/**
* This method initializes $m_unitfactors, $m_unitids, and $m_mainunit.
*/
protected function initConversionData()
{
if ($this->m_unitids !== false) {
return;
// do the below only once
}
$this->m_unitids = array();
$this->m_unitfactors = array();
$this->m_mainunit = false;
if (!is_null($this->m_property)) {
$propertyDiWikiPage = $this->m_property->getDiWikiPage();
}
if (is_null($this->m_property) || is_null($propertyDiWikiPage)) {
return;
// we cannot find conversion factors without the property
}
$factors = \SMW\StoreFactory::getStore()->getPropertyValues($propertyDiWikiPage, new SMWDIProperty('_CONV'));
if (count($factors) == 0) {
// no custom type
$this->addError(wfMessage('smw_nounitsdeclared')->inContentLanguage()->text());
return;
}
$number = $unit = '';
foreach ($factors as $di) {
if (!$di instanceof SMWDIBlob || SMWNumberValue::parseNumberValue($di->getString(), $number, $unit) != 0 || $number == 0) {
continue;
// ignore corrupted data and bogus inputs
}
$unit_aliases = preg_split('/\\s*,\\s*/u', $unit);
$first = true;
foreach ($unit_aliases as $unit) {
$unit = SMWNumberValue::normalizeUnit($unit);
if ($first) {
$unitid = $unit;
if ($number == 1) {
// add main unit to front of array (displayed first)
$this->m_mainunit = $unit;
$this->m_unitfactors = array($unit => 1) + $this->m_unitfactors;
} else {
// non-main units are not ordered (can be modified via display units)
$this->m_unitfactors[$unit] = $number;
}
$first = false;
}
// add all known units to m_unitids to simplify checking for them
$this->m_unitids[$unit] = $unitid;
}
}
if ($this->m_mainunit === false) {
// No unit with factor 1? Make empty string the main unit.
$this->m_mainunit = '';
}
// always add an extra empty unit; not as a synonym for the main unit but as a new unit with ID ''
// so if users do not give any unit, the conversion tooltip will still display the main unit for clarity
// (the empty unit is never displayed; we filter it when making conversion values)
$this->m_unitfactors = array('' => 1) + $this->m_unitfactors;
$this->m_unitids[''] = '';
}
