AlmanacDeviceStatusTransaction.php
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AlmanacDeviceStatusTransaction.php
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	<?php

	final class AlmanacDeviceStatusTransaction
	extends AlmanacDeviceTransactionType {

	const TRANSACTIONTYPE = 'almanac:device:status';

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

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

	public function getTitle() {
	$old_value = $this->getOldValue();
	$new_value = $this->getNewValue();

	$old_status = AlmanacDeviceStatus::newStatusFromValue($old_value);
	$new_status = AlmanacDeviceStatus::newStatusFromValue($new_value);

	$old_name = $old_status->getName();
	$new_name = $new_status->getName();

	return pht(
	'%s changed the status of this device from %s to %s.',
	$this->renderAuthor(),
	$this->renderValue($old_name),
	$this->renderValue($new_name));
	}

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

	$status_map = AlmanacDeviceStatus::getStatusMap();

	$old_value = $this->generateOldValue($object);
	foreach ($xactions as $xaction) {
	$new_value = $xaction->getNewValue();

	if ($new_value === $old_value) {
	continue;
	}

	if (!isset($status_map[$new_value])) {
	$errors[] = $this->newInvalidError(
	pht(
	'Almanac device status "%s" is unrecognized. Valid status '.
	'values are: %s.',
	$new_value,
	implode(', ', array_keys($status_map))),
	$xaction);
	continue;
	}
	}

	return $errors;
	}

	}