PhabricatorSubscriptionsEditEngineExtension.php
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PhabricatorSubscriptionsEditEngineExtension.php
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	<?php

	final class PhabricatorSubscriptionsEditEngineExtension
	extends PhabricatorEditEngineExtension {

	const EXTENSIONKEY = 'subscriptions.subscribers';

	public function getExtensionPriority() {
	return 750;
	}

	public function isExtensionEnabled() {
	return true;
	}

	public function getExtensionName() {
	return pht('Subscriptions');
	}

	public function supportsObject(
	PhabricatorEditEngine $engine,
	PhabricatorApplicationTransactionInterface $object) {
	return ($object instanceof PhabricatorSubscribableInterface);
	}

	public function buildCustomEditFields(
	PhabricatorEditEngine $engine,
	PhabricatorApplicationTransactionInterface $object) {

	$subscribers_type = PhabricatorTransactions::TYPE_SUBSCRIBERS;

	$object_phid = $object->getPHID();
	if ($object_phid) {
	$sub_phids = PhabricatorSubscribersQuery::loadSubscribersForPHID(
	$object_phid);
	} else {
	// TODO: Allow applications to provide default subscribers? Maniphest
	// does this at a minimum.
	$sub_phids = array();
	}

	$subscribers_field = id(new PhabricatorSubscribersEditField())
	->setKey('subscriberPHIDs')
	->setLabel(pht('Subscribers'))
	->setEditTypeKey('subscribers')
	->setDescription(pht('Manage subscribers.'))
	->setAliases(array('subscriber', 'subscribers'))
	->setUseEdgeTransactions(true)
	->setEdgeTransactionDescriptions(
	pht('Add subscribers.'),
	pht('Remove subscribers.'),
	pht('Set subscribers, overwriting current value.'))
	->setTransactionType($subscribers_type)
	->setValue($sub_phids);

	return array(
	$subscribers_field,
	);
	}

	}