PhabricatorRepositoryTouchLimitTransaction.php
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	<?php

	final class PhabricatorRepositoryTouchLimitTransaction
	extends PhabricatorRepositoryTransactionType {

	const TRANSACTIONTYPE = 'limit.touch';

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

	public function generateNewValue($object, $value) {
	if (!strlen($value)) {
	return null;
	}

	$value = (int)$value;
	if (!$value) {
	return null;
	}

	return $value;
	}

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

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

	if ($old && $new) {
	return pht(
	'%s changed the touch limit for this repository from %s paths to '.
	'%s paths.',
	$this->renderAuthor(),
	$this->renderOldValue(),
	$this->renderNewValue());
	} else if ($new) {
	return pht(
	'%s set the touch limit for this repository to %s paths.',
	$this->renderAuthor(),
	$this->renderNewValue());
	} else {
	return pht(
	'%s removed the touch limit (%s paths) for this repository.',
	$this->renderAuthor(),
	$this->renderOldValue());
	}
	}

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

	foreach ($xactions as $xaction) {
	$new = $xaction->getNewValue();

	if (!strlen($new)) {
	continue;
	}

	if (!preg_match('/^\d+\z/', $new)) {
	$errors[] = $this->newInvalidError(
	pht(
	'Unable to parse touch limit, specify a positive number of '.
	'paths.'),
	$xaction);
	continue;
	}
	}

	return $errors;
	}

	}