testing

PhortuneMerchantTransaction.php
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			<?php

			final class PhortuneMerchantTransaction
			extends PhabricatorApplicationTransaction {

			const TYPE_NAME = 'merchant:name';
			const TYPE_DESCRIPTION = 'merchant:description';

			public function getApplicationName() {
			return 'phortune';
			}

			public function getApplicationTransactionType() {
			return PhortuneMerchantPHIDType::TYPECONST;
			}

			public function getApplicationTransactionCommentObject() {
			return null;
			}

			public function getTitle() {
			$author_phid = $this->getAuthorPHID();

			$old = $this->getOldValue();
			$new = $this->getNewValue();

			switch ($this->getTransactionType()) {
			case self::TYPE_NAME:
			if ($old === null) {
			return pht(
			'%s created this merchant.',
			$this->renderHandleLink($author_phid));
			} else {
			return pht(
			'%s renamed this merchant from "%s" to "%s".',
			$this->renderHandleLink($author_phid),
			$old,
			$new);
			}
			break;
			case self::TYPE_DESCRIPTION:
			return pht(
			'%s updated the description for this merchant.',
			$this->renderHandleLink($author_phid));
			}

			return parent::getTitle();
			}

			public function shouldHide() {
			$old = $this->getOldValue();
			switch ($this->getTransactionType()) {
			case self::TYPE_DESCRIPTION:
			return ($old === null);
			}
			return parent::shouldHide();
			}

			public function hasChangeDetails() {
			switch ($this->getTransactionType()) {
			case self::TYPE_DESCRIPTION:
			return ($this->getOldValue() !== null);
			}

			return parent::hasChangeDetails();
			}

			public function renderChangeDetails(PhabricatorUser $viewer) {
			return $this->renderTextCorpusChangeDetails(
			$viewer,
			$this->getOldValue(),
			$this->getNewValue());
			}

			}