/**
* Given a set of selected values (aCurrentSelections) for a given
* field set (iFieldSet), returns an array (possibly empty) with the
* keys set to newly uncovered fields, and the contents an array of
* the value instances that are available to choose in those fields.
*
* Return value:
*
* array(
* array('field' => DocumentField, 'values' => array(Metadata, Metadata)),
* ...
* )
*
*/
function getNext($oFieldset, $aCurrentSelections)
{
/*
* GENERAL GAME PLAN
*
* Firstly, if there are no current selections, return the
* master field and all of its values.
*
* If there are selections, get the behaviour for the selected
* value of the master field, and call _getNextForBehaviour on
* it, passing in the current selections. This will return an
* array keyed on field id with values of an array of lookup ids
* for that field.
*
* Convert these to objects and the return format.
*/
$oFieldset =& KTUtil::getObject('KTFieldset', $oFieldset);
$GLOBALS['default']->log->debug('KTMetadataUtil::getNext, selections are: ' . print_r($aCurrentSelections, true));
if (empty($aCurrentSelections)) {
$oField =& DocumentField::get($oFieldset->getMasterFieldId());
if (PEAR::isError($oField)) {
return array();
}
// FIXME we now need: the VALUES of MasterField that are assigned to a behaviour. (ONLY)
return array($oField->getId() => array('field' => $oField, 'values' => MetaData::getEnabledByDocumentField($oField)));
}
$oMasterField =& DocumentField::get($oFieldset->getMasterFieldId());
if (PEAR::isError($oMasterField)) {
return array();
}
$aSelectedFields = array_keys($aCurrentSelections);
$field = $oMasterField->getId();
$val = $aCurrentSelections[$field];
$lookup = MetaData::getByValueAndDocumentField($val, $field);
//var_dump($lookup); exit(0);
$oValueInstance = KTValueInstance::getByLookupSingle($lookup);
if (PEAR::isError($oValueInstance) || is_null($oValueInstance) || $oValueInstance === false) {
return true;
}
// throw an error
$aValues = KTMetadataUtil::_getNextForBehaviour($oValueInstance->getBehaviourId(), $aCurrentSelections);
$GLOBALS['default']->log->debug('KTMetadataUtil::getNext, values are ' . print_r($aValues, true));
$aReturn = array();
foreach ($aValues as $iFieldId => $aValueIds) {
$aTheseValues = array();
foreach ($aValueIds as $iLookupId) {
$aTheseValues[$iLookupId] = MetaData::get($iLookupId);
}
$aReturn[$iFieldId] = array('field' => DocumentField::get($iFieldId), 'values' => $aTheseValues);
}
return $aReturn;
}
