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PhabricatorProjectTriggerNameTransaction.php
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			<?php

			final class PhabricatorProjectTriggerNameTransaction
			extends PhabricatorProjectTriggerTransactionType {

			const TRANSACTIONTYPE = 'name';

			public function generateOldValue($object) {
			return $object->getName();
			}

			public function applyInternalEffects($object, $value) {
			$object->setName($value);
			}

			public function getTitle() {
			$old = $this->getOldValue();
			$new = $this->getNewValue();

			if (strlen($old) && strlen($new)) {
			return pht(
			'%s renamed this trigger from %s to %s.',
			$this->renderAuthor(),
			$this->renderOldValue(),
			$this->renderNewValue());
			} else if (strlen($new)) {
			return pht(
			'%s named this trigger %s.',
			$this->renderAuthor(),
			$this->renderNewValue());
			} else {
			return pht(
			'%s stripped the name %s from this trigger.',
			$this->renderAuthor(),
			$this->renderOldValue());
			}
			}

			public function validateTransactions($object, array $xactions) {
			$errors = array();

			$max_length = $object->getColumnMaximumByteLength('name');
			foreach ($xactions as $xaction) {
			$new_value = $xaction->getNewValue();
			$new_length = strlen($new_value);
			if ($new_length > $max_length) {
			$errors[] = $this->newInvalidError(
			pht(
			'Trigger names must not be longer than %s characters.',
			new PhutilNumber($max_length)),
			$xaction);
			}
			}

			return $errors;
			}

			}