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PhabricatorDashboardPanelNameTransaction.php
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			<?php

			final class PhabricatorDashboardPanelNameTransaction
			extends PhabricatorDashboardPanelTransactionType {

			const TRANSACTIONTYPE = 'dashpanel: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();

			return pht(
			'%s renamed this panel from %s to %s.',
			$this->renderAuthor(),
			$this->renderOldValue(),
			$this->renderNewValue());
			}

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

			$max_length = $object->getColumnMaximumByteLength('name');
			foreach ($xactions as $xaction) {
			$new = $xaction->getNewValue();
			if (!strlen($new)) {
			$errors[] = $this->newInvalidError(
			pht('Panels must have a title.'),
			$xaction);
			continue;
			}

			if (strlen($new) > $max_length) {
			$errors[] = $this->newInvalidError(
			pht(
			'Panel names must not be longer than %s characters.',
			$max_length));
			continue;
			}
			}

			if (!$errors) {
			if ($this->isEmptyTextTransaction($object->getName(), $xactions)) {
			$errors[] = $this->newRequiredError(
			pht('Panels must have a title.'));
			}
			}

			return $errors;
			}

			public function getTransactionTypeForConduit($xaction) {
			return 'name';
			}

			public function getFieldValuesForConduit($xaction, $data) {
			return array(
			'old' => $xaction->getOldValue(),
			'new' => $xaction->getNewValue(),
			);
			}

			}