Differential D14601 Diff 35338 src/applications/transactions/editfield/PhabricatorPHIDListEditField.php

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src/applications/transactions/editfield/PhabricatorPHIDListEditField.php

This file was added.

				<?php

				abstract class PhabricatorPHIDListEditField
				extends PhabricatorEditField {

				private $useEdgeTransactions;
				private $transactionDescriptions = array();

				public function setUseEdgeTransactions($use_edge_transactions) {
				$this->useEdgeTransactions = $use_edge_transactions;
				return $this;
				}

				public function getUseEdgeTransactions() {
				return $this->useEdgeTransactions;
				}

				public function setEdgeTransactionDescriptions($add, $rem, $set) {
				$this->transactionDescriptions = array(
				'+' => $add,
				'-' => $rem,
				'=' => $set,
				);
				return $this;
				}

				protected function newHTTPParameterType() {
				return new AphrontPHIDListHTTPParameterType();
				}

				protected function getValueForTransaction() {
				$new = parent::getValueForTransaction();

				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();
				}

				return parent::newEditType();
				}

				public function getEditTransactionTypes() {
				if (!$this->getUseEdgeTransactions()) {
				return parent::getEditTransactionTypes();
				}

				$transaction_type = $this->getTransactionType();
				if ($transaction_type === null) {
				return array();
				}

				$type_key = $this->getEditTypeKey();
				$strings = $this->transactionDescriptions;

				$base = $this->getEditTransactionType();

				$add = id(clone $base)
				->setEditType($type_key.'.add')
				->setEdgeOperation('+')
				->setDescription(idx($strings, '+'))
				->setValueDescription(pht('List of PHIDs to add.'));

				$rem = id(clone $base)
				->setEditType($type_key.'.remove')
				->setEdgeOperation('-')
				->setDescription(idx($strings, '-'))
				->setValueDescription(pht('List of PHIDs to remove.'));

				$set = id(clone $base)
				->setEditType($type_key.'.set')
				->setEdgeOperation('=')
				->setDescription(idx($strings, '='))
				->setValueDescription(pht('List of PHIDs to set.'));

				return array(
				$add,
				$rem,
				$set,
				);
				}

				}