Differential D14390 Diff 34772 src/applications/transactions/editfield/PhabricatorTokenizerEditField.php

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src/applications/transactions/editfield/PhabricatorTokenizerEditField.php

This file was added.

				<?php

				abstract class PhabricatorTokenizerEditField
				extends PhabricatorEditField {

				private $originalValue;

				abstract protected function newDatasource();

				protected function newControl() {
				$control = id(new AphrontFormTokenizerControl())
				->setDatasource($this->newDatasource());

				if ($this->originalValue !== null) {
				$control->setOriginalValue($this->originalValue);
				}

				return $control;
				}

				public function setOriginalValue(array $value) {
				$this->originalValue = $value;
				return $this;
				}

				public function setValue($value) {
				$this->originalValue = $value;
				return parent::setValue($value);
				}

				protected function getValueFromSubmit(AphrontRequest $request, $key) {
				// TODO: Maybe move this unusual read somewhere else so subclassing this
				// correctly is easier?
				$this->originalValue = $request->getArr($key.'.original');

				return $this->getListFromRequest($request, $key);
				}

				protected function getDefaultValue() {
				return array();
				}

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

				$edge_types = array(
				PhabricatorTransactions::TYPE_EDGE => true,
				PhabricatorTransactions::TYPE_SUBSCRIBERS => true,
				);

				if (isset($edge_types[$this->getTransactionType()])) {
				if ($this->originalValue !== null) {
				// 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.

				$new = parent::getValueForTransaction();
				$old = $this->originalValue;

				$add = array_diff($new, $old);
				$rem = array_diff($old, $new);

				$value = array();

				if ($add) {
				$value['+'] = array_fuse($add);
				}
				if ($rem) {
				$value['-'] = array_fuse($rem);
				}

				return $value;
				} else {

				if (!is_array($new)) {
				throw new Exception(print_r($new, true));
				}

				return array(
				'=' => array_fuse($new),
				);
				}
				}

				return $new;
				}

				}