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PhabricatorPHIDListEditField.php
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Created
Mon, Jul 15, 09:59

PhabricatorPHIDListEditField.php
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<?php
abstract class PhabricatorPHIDListEditField
extends PhabricatorEditField {
private $useEdgeTransactions;
private $isSingleValue;
public function setUseEdgeTransactions($use_edge_transactions) {
$this->useEdgeTransactions = $use_edge_transactions;
return $this;
}
public function getUseEdgeTransactions() {
return $this->useEdgeTransactions;
}
public function setSingleValue($value) {
if ($value === null) {
$value = array();
} else {
$value = array($value);
}
$this->isSingleValue = true;
return $this->setValue($value);
}
public function getIsSingleValue() {
return $this->isSingleValue;
}
protected function newHTTPParameterType() {
return new AphrontPHIDListHTTPParameterType();
}
protected function newConduitParameterType() {
if ($this->getIsSingleValue()) {
return new ConduitPHIDParameterType();
} else {
return new ConduitPHIDListParameterType();
}
}
protected function getValueFromRequest(AphrontRequest $request, $key) {
$value = parent::getValueFromRequest($request, $key);
if ($this->getIsSingleValue()) {
$value = array_slice($value, 0, 1);
}
return $value;
}
public function getValueForTransaction() {
$new = parent::getValueForTransaction();
if ($this->getIsSingleValue()) {
if ($new) {
return head($new);
} else {
return null;
}
}
if (!$this->getUseEdgeTransactions()) {
return $new;
}
$old = $this->getInitialValue();
if ($old === null) {
return array(
'=' => array_fuse($new),
);
}
// If we're building an edge transaction and the request has data about the
// original value the user saw when they loaded the form, interpret the
// edit as a mixture of "+" and "-" operations instead of a single "="
// operation. This limits our exposure to race conditions by making most
// concurrent edits merge correctly.
$add = array_diff($new, $old);
$rem = array_diff($old, $new);
$value = array();
if ($add) {
$value['+'] = array_fuse($add);
}
if ($rem) {
$value['-'] = array_fuse($rem);
}
return $value;
}
protected function newEditType() {
if ($this->getUseEdgeTransactions()) {
return new PhabricatorEdgeEditType();
}
$type = new PhabricatorDatasourceEditType();
$type->setIsSingleValue($this->getIsSingleValue());
$type->setConduitParameterType($this->newConduitParameterType());
return $type;
}
protected function newConduitEditTypes() {
if (!$this->getUseEdgeTransactions()) {
return parent::newConduitEditTypes();
}
$transaction_type = $this->getTransactionType();
if ($transaction_type === null) {
return array();
}
$type_key = $this->getEditTypeKey();
$base = $this->getEditType();
$add = id(clone $base)
->setEditType($type_key.'.add')
->setEdgeOperation('+')
->setConduitTypeDescription(pht('List of PHIDs to add.'))
->setConduitParameterType($this->getConduitParameterType());
$rem = id(clone $base)
->setEditType($type_key.'.remove')
->setEdgeOperation('-')
->setConduitTypeDescription(pht('List of PHIDs to remove.'))
->setConduitParameterType($this->getConduitParameterType());
$set = id(clone $base)
->setEditType($type_key.'.set')
->setEdgeOperation('=')
->setConduitTypeDescription(pht('List of PHIDs to set.'))
->setConduitParameterType($this->getConduitParameterType());
return array(
$add,
$rem,
$set,
);
}
}

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