Differential D19122 Diff 45821 src/applications/fact/engine/PhabricatorTransactionFactEngine.php

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src/applications/fact/engine/PhabricatorTransactionFactEngine.php

This file was added.

				<?php

				abstract class PhabricatorTransactionFactEngine
				extends PhabricatorFactEngine {

				public function newTransactionGroupsForObject(PhabricatorLiskDAO $object) {
				$viewer = $this->getViewer();

				$xaction_query = PhabricatorApplicationTransactionQuery::newQueryForObject(
				$object);
				$xactions = $xaction_query
				->setViewer($viewer)
				->withObjectPHIDs(array($object->getPHID()))
				->execute();

				$xactions = msortv($xactions, 'newChronologicalSortVector');

				return $this->groupTransactions($xactions);
				}

				protected function groupTransactions(array $xactions) {
				// These grouping rules are generally much looser than the display grouping
				// rules. As long as the same user is editing the task and they don't leave
				// it alone for a particularly long time, we'll group things together.

				$breaks = array();

				$touch_window = phutil_units('15 minutes in seconds');
				$user_type = PhabricatorPeopleUserPHIDType::TYPECONST;

				$last_actor = null;
				$last_epoch = null;

				foreach ($xactions as $key => $xaction) {
				$this_actor = $xaction->getAuthorPHID();
				if (phid_get_type($this_actor) != $user_type) {
				$this_actor = null;
				}

				if ($this_actor && $last_actor && ($this_actor != $last_actor)) {
				$breaks[$key] = true;
				}

				// If too much time passed between changes, group them separately.
				$this_epoch = $xaction->getDateCreated();
				if ($last_epoch) {
				if (($this_epoch - $last_epoch) > $touch_window) {
				$breaks[$key] = true;
				}
				}

				// The clock gets reset every time the same real user touches the
				// task, but does not reset if an automated actor touches things.
				if (!$last_actor \|\| ($this_actor == $last_actor)) {
				$last_epoch = $this_epoch;
				}

				if ($this_actor && ($last_actor != $this_actor)) {
				$last_actor = $this_actor;
				$last_epoch = $this_epoch;
				}
				}

				$groups = array();
				$group = array();
				foreach ($xactions as $key => $xaction) {
				if (isset($breaks[$key])) {
				if ($group) {
				$groups[] = $group;
				$group = array();
				}
				}

				$group[] = $xaction;
				}

				if ($group) {
				$groups[] = $group;
				}

				return $groups;
				}

				}