NuanceSourceDefaultQueueTransaction.php
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	<?php

	final class NuanceSourceDefaultQueueTransaction
	extends NuanceSourceTransactionType {

	const TRANSACTIONTYPE = 'source.queue.default';

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

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

	public function getTitle() {
	return pht(
	'%s changed the default queue for this source from %s to %s.',
	$this->renderAuthor(),
	$this->renderOldHandle(),
	$this->renderNewHandle());
	}

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

	if (!$object->getDefaultQueuePHID() && !$xactions) {
	$errors[] = $this->newRequiredError(
	pht('Sources must have a default queue.'));
	}

	foreach ($xactions as $xaction) {
	if (!$xaction->getNewValue()) {
	$errors[] = $this->newRequiredError(
	pht('Sources must have a default queue.'));
	}
	}

	return $errors;
	}

	}