D17844.id42925.diff
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D17844.id42925.diff
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	diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
	--- a/src/__phutil_library_map__.php
	+++ b/src/__phutil_library_map__.php
	@@ -1510,14 +1510,18 @@
	'ManiphestTaskAssignOtherHeraldAction' => 'applications/maniphest/herald/ManiphestTaskAssignOtherHeraldAction.php',
	'ManiphestTaskAssignSelfHeraldAction' => 'applications/maniphest/herald/ManiphestTaskAssignSelfHeraldAction.php',
	'ManiphestTaskAssigneeHeraldField' => 'applications/maniphest/herald/ManiphestTaskAssigneeHeraldField.php',
	+ 'ManiphestTaskAttachTransaction' => 'applications/maniphest/xaction/ManiphestTaskAttachTransaction.php',
	'ManiphestTaskAuthorHeraldField' => 'applications/maniphest/herald/ManiphestTaskAuthorHeraldField.php',
	'ManiphestTaskAuthorPolicyRule' => 'applications/maniphest/policyrule/ManiphestTaskAuthorPolicyRule.php',
	'ManiphestTaskCloseAsDuplicateRelationship' => 'applications/maniphest/relationship/ManiphestTaskCloseAsDuplicateRelationship.php',
	'ManiphestTaskClosedStatusDatasource' => 'applications/maniphest/typeahead/ManiphestTaskClosedStatusDatasource.php',
	+ 'ManiphestTaskCoverImageTransaction' => 'applications/maniphest/xaction/ManiphestTaskCoverImageTransaction.php',
	'ManiphestTaskDependedOnByTaskEdgeType' => 'applications/maniphest/edge/ManiphestTaskDependedOnByTaskEdgeType.php',
	'ManiphestTaskDependsOnTaskEdgeType' => 'applications/maniphest/edge/ManiphestTaskDependsOnTaskEdgeType.php',
	'ManiphestTaskDescriptionHeraldField' => 'applications/maniphest/herald/ManiphestTaskDescriptionHeraldField.php',
	+ 'ManiphestTaskDescriptionTransaction' => 'applications/maniphest/xaction/ManiphestTaskDescriptionTransaction.php',
	'ManiphestTaskDetailController' => 'applications/maniphest/controller/ManiphestTaskDetailController.php',
	+ 'ManiphestTaskEdgeTransaction' => 'applications/maniphest/xaction/ManiphestTaskEdgeTransaction.php',
	'ManiphestTaskEditBulkJobType' => 'applications/maniphest/bulk/ManiphestTaskEditBulkJobType.php',
	'ManiphestTaskEditController' => 'applications/maniphest/controller/ManiphestTaskEditController.php',
	'ManiphestTaskEditEngineLock' => 'applications/maniphest/editor/ManiphestTaskEditEngineLock.php',
	@@ -1540,14 +1544,20 @@
	'ManiphestTaskListView' => 'applications/maniphest/view/ManiphestTaskListView.php',
	'ManiphestTaskMailReceiver' => 'applications/maniphest/mail/ManiphestTaskMailReceiver.php',
	'ManiphestTaskMergeInRelationship' => 'applications/maniphest/relationship/ManiphestTaskMergeInRelationship.php',
	+ 'ManiphestTaskMergedFromTransaction' => 'applications/maniphest/xaction/ManiphestTaskMergedFromTransaction.php',
	+ 'ManiphestTaskMergedIntoTransaction' => 'applications/maniphest/xaction/ManiphestTaskMergedIntoTransaction.php',
	'ManiphestTaskOpenStatusDatasource' => 'applications/maniphest/typeahead/ManiphestTaskOpenStatusDatasource.php',
	+ 'ManiphestTaskOwnerTransaction' => 'applications/maniphest/xaction/ManiphestTaskOwnerTransaction.php',
	'ManiphestTaskPHIDResolver' => 'applications/maniphest/httpparametertype/ManiphestTaskPHIDResolver.php',
	'ManiphestTaskPHIDType' => 'applications/maniphest/phid/ManiphestTaskPHIDType.php',
	+ 'ManiphestTaskParentTransaction' => 'applications/maniphest/xaction/ManiphestTaskParentTransaction.php',
	'ManiphestTaskPoints' => 'applications/maniphest/constants/ManiphestTaskPoints.php',
	+ 'ManiphestTaskPointsTransaction' => 'applications/maniphest/xaction/ManiphestTaskPointsTransaction.php',
	'ManiphestTaskPriority' => 'applications/maniphest/constants/ManiphestTaskPriority.php',
	'ManiphestTaskPriorityDatasource' => 'applications/maniphest/typeahead/ManiphestTaskPriorityDatasource.php',
	'ManiphestTaskPriorityHeraldAction' => 'applications/maniphest/herald/ManiphestTaskPriorityHeraldAction.php',
	'ManiphestTaskPriorityHeraldField' => 'applications/maniphest/herald/ManiphestTaskPriorityHeraldField.php',
	+ 'ManiphestTaskPriorityTransaction' => 'applications/maniphest/xaction/ManiphestTaskPriorityTransaction.php',
	'ManiphestTaskQuery' => 'applications/maniphest/query/ManiphestTaskQuery.php',
	'ManiphestTaskRelationship' => 'applications/maniphest/relationship/ManiphestTaskRelationship.php',
	'ManiphestTaskRelationshipSource' => 'applications/search/relationship/ManiphestTaskRelationshipSource.php',
	@@ -1559,9 +1569,14 @@
	'ManiphestTaskStatusHeraldAction' => 'applications/maniphest/herald/ManiphestTaskStatusHeraldAction.php',
	'ManiphestTaskStatusHeraldField' => 'applications/maniphest/herald/ManiphestTaskStatusHeraldField.php',
	'ManiphestTaskStatusTestCase' => 'applications/maniphest/constants/__tests__/ManiphestTaskStatusTestCase.php',
	+ 'ManiphestTaskStatusTransaction' => 'applications/maniphest/xaction/ManiphestTaskStatusTransaction.php',
	+ 'ManiphestTaskSubpriorityTransaction' => 'applications/maniphest/xaction/ManiphestTaskSubpriorityTransaction.php',
	'ManiphestTaskSubtypeDatasource' => 'applications/maniphest/typeahead/ManiphestTaskSubtypeDatasource.php',
	'ManiphestTaskTestCase' => 'applications/maniphest/__tests__/ManiphestTaskTestCase.php',
	'ManiphestTaskTitleHeraldField' => 'applications/maniphest/herald/ManiphestTaskTitleHeraldField.php',
	+ 'ManiphestTaskTitleTransaction' => 'applications/maniphest/xaction/ManiphestTaskTitleTransaction.php',
	+ 'ManiphestTaskTransactionType' => 'applications/maniphest/xaction/ManiphestTaskTransactionType.php',
	+ 'ManiphestTaskUnblockTransaction' => 'applications/maniphest/xaction/ManiphestTaskUnblockTransaction.php',
	'ManiphestTransaction' => 'applications/maniphest/storage/ManiphestTransaction.php',
	'ManiphestTransactionComment' => 'applications/maniphest/storage/ManiphestTransactionComment.php',
	'ManiphestTransactionEditor' => 'applications/maniphest/editor/ManiphestTransactionEditor.php',
	@@ -6558,14 +6573,18 @@
	'ManiphestTaskAssignOtherHeraldAction' => 'ManiphestTaskAssignHeraldAction',
	'ManiphestTaskAssignSelfHeraldAction' => 'ManiphestTaskAssignHeraldAction',
	'ManiphestTaskAssigneeHeraldField' => 'ManiphestTaskHeraldField',
	+ 'ManiphestTaskAttachTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskAuthorHeraldField' => 'ManiphestTaskHeraldField',
	'ManiphestTaskAuthorPolicyRule' => 'PhabricatorPolicyRule',
	'ManiphestTaskCloseAsDuplicateRelationship' => 'ManiphestTaskRelationship',
	'ManiphestTaskClosedStatusDatasource' => 'PhabricatorTypeaheadDatasource',
	+ 'ManiphestTaskCoverImageTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskDependedOnByTaskEdgeType' => 'PhabricatorEdgeType',
	'ManiphestTaskDependsOnTaskEdgeType' => 'PhabricatorEdgeType',
	'ManiphestTaskDescriptionHeraldField' => 'ManiphestTaskHeraldField',
	+ 'ManiphestTaskDescriptionTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskDetailController' => 'ManiphestController',
	+ 'ManiphestTaskEdgeTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskEditBulkJobType' => 'PhabricatorWorkerBulkJobType',
	'ManiphestTaskEditController' => 'ManiphestController',
	'ManiphestTaskEditEngineLock' => 'PhabricatorEditEngineLock',
	@@ -6588,14 +6607,20 @@
	'ManiphestTaskListView' => 'ManiphestView',
	'ManiphestTaskMailReceiver' => 'PhabricatorObjectMailReceiver',
	'ManiphestTaskMergeInRelationship' => 'ManiphestTaskRelationship',
	+ 'ManiphestTaskMergedFromTransaction' => 'ManiphestTaskTransactionType',
	+ 'ManiphestTaskMergedIntoTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskOpenStatusDatasource' => 'PhabricatorTypeaheadDatasource',
	+ 'ManiphestTaskOwnerTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskPHIDResolver' => 'PhabricatorPHIDResolver',
	'ManiphestTaskPHIDType' => 'PhabricatorPHIDType',
	+ 'ManiphestTaskParentTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskPoints' => 'Phobject',
	+ 'ManiphestTaskPointsTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskPriority' => 'ManiphestConstants',
	'ManiphestTaskPriorityDatasource' => 'PhabricatorTypeaheadDatasource',
	'ManiphestTaskPriorityHeraldAction' => 'HeraldAction',
	'ManiphestTaskPriorityHeraldField' => 'ManiphestTaskHeraldField',
	+ 'ManiphestTaskPriorityTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
	'ManiphestTaskRelationship' => 'PhabricatorObjectRelationship',
	'ManiphestTaskRelationshipSource' => 'PhabricatorObjectRelationshipSource',
	@@ -6607,10 +6632,15 @@
	'ManiphestTaskStatusHeraldAction' => 'HeraldAction',
	'ManiphestTaskStatusHeraldField' => 'ManiphestTaskHeraldField',
	'ManiphestTaskStatusTestCase' => 'PhabricatorTestCase',
	+ 'ManiphestTaskStatusTransaction' => 'ManiphestTaskTransactionType',
	+ 'ManiphestTaskSubpriorityTransaction' => 'ManiphestTaskTransactionType',
	'ManiphestTaskSubtypeDatasource' => 'PhabricatorTypeaheadDatasource',
	'ManiphestTaskTestCase' => 'PhabricatorTestCase',
	'ManiphestTaskTitleHeraldField' => 'ManiphestTaskHeraldField',
	- 'ManiphestTransaction' => 'PhabricatorApplicationTransaction',
	+ 'ManiphestTaskTitleTransaction' => 'ManiphestTaskTransactionType',
	+ 'ManiphestTaskTransactionType' => 'PhabricatorModularTransactionType',
	+ 'ManiphestTaskUnblockTransaction' => 'ManiphestTaskTransactionType',
	+ 'ManiphestTransaction' => 'PhabricatorModularTransaction',
	'ManiphestTransactionComment' => 'PhabricatorApplicationTransactionComment',
	'ManiphestTransactionEditor' => 'PhabricatorApplicationTransactionEditor',
	'ManiphestTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
	diff --git a/src/applications/maniphest/__tests__/ManiphestTaskTestCase.php b/src/applications/maniphest/__tests__/ManiphestTaskTestCase.php
	--- a/src/applications/maniphest/__tests__/ManiphestTaskTestCase.php
	+++ b/src/applications/maniphest/__tests__/ManiphestTaskTestCase.php
	@@ -133,7 +133,7 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_TITLE)
	+ ->setTransactionType(ManiphestTaskTitleTransaction::TRANSACTIONTYPE)
	->setNewValue($title);


	@@ -169,11 +169,11 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($pri);

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
	+ ->setTransactionType(ManiphestTaskSubpriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($sub);

	return $this->applyTaskTransactions($viewer, $src, $xactions);
	@@ -192,11 +192,11 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($pri);

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
	+ ->setTransactionType(ManiphestTaskSubpriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($sub);

	return $this->applyTaskTransactions($viewer, $src, $xactions);
	diff --git a/src/applications/maniphest/bulk/ManiphestTaskEditBulkJobType.php b/src/applications/maniphest/bulk/ManiphestTaskEditBulkJobType.php
	--- a/src/applications/maniphest/bulk/ManiphestTaskEditBulkJobType.php
	+++ b/src/applications/maniphest/bulk/ManiphestTaskEditBulkJobType.php
	@@ -76,9 +76,9 @@
	$value_map = array();
	$type_map = array(
	'add_comment' => PhabricatorTransactions::TYPE_COMMENT,
	- 'assign' => ManiphestTransaction::TYPE_OWNER,
	- 'status' => ManiphestTransaction::TYPE_STATUS,
	- 'priority' => ManiphestTransaction::TYPE_PRIORITY,
	+ 'assign' => ManiphestTaskOwnerTransaction::TRANSACTIONTYPE,
	+ 'status' => ManiphestTaskStatusTransaction::TRANSACTIONTYPE,
	+ 'priority' => ManiphestTaskPriorityTransaction::TRANSACTIONTYPE,
	'add_project' => PhabricatorTransactions::TYPE_EDGE,
	'remove_project' => PhabricatorTransactions::TYPE_EDGE,
	'add_ccs' => PhabricatorTransactions::TYPE_SUBSCRIBERS,
	@@ -114,13 +114,13 @@
	case PhabricatorTransactions::TYPE_COMMENT:
	$current = null;
	break;
	- case ManiphestTransaction::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	$current = $task->getOwnerPHID();
	break;
	- case ManiphestTransaction::TYPE_STATUS:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	$current = $task->getStatus();
	break;
	- case ManiphestTransaction::TYPE_PRIORITY:
	+ case ManiphestTaskPriorityTransaction::TRANSACTIONTYPE:
	$current = $task->getPriority();
	break;
	case PhabricatorTransactions::TYPE_EDGE:
	@@ -153,7 +153,7 @@
	}
	$value = head($value);
	break;
	- case ManiphestTransaction::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	if (empty($value)) {
	continue 2;
	}
	diff --git a/src/applications/maniphest/command/ManiphestAssignEmailCommand.php b/src/applications/maniphest/command/ManiphestAssignEmailCommand.php
	--- a/src/applications/maniphest/command/ManiphestAssignEmailCommand.php
	+++ b/src/applications/maniphest/command/ManiphestAssignEmailCommand.php
	@@ -53,7 +53,7 @@
	}

	$xactions[] = $object->getApplicationTransactionTemplate()
	- ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
	+ ->setTransactionType(ManiphestTaskOwnerTransaction::TRANSACTIONTYPE)
	->setNewValue($assign_phid);

	return $xactions;
	diff --git a/src/applications/maniphest/command/ManiphestClaimEmailCommand.php b/src/applications/maniphest/command/ManiphestClaimEmailCommand.php
	--- a/src/applications/maniphest/command/ManiphestClaimEmailCommand.php
	+++ b/src/applications/maniphest/command/ManiphestClaimEmailCommand.php
	@@ -23,7 +23,7 @@
	$xactions = array();

	$xactions[] = $object->getApplicationTransactionTemplate()
	- ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
	+ ->setTransactionType(ManiphestTaskOwnerTransaction::TRANSACTIONTYPE)
	->setNewValue($viewer->getPHID());

	return $xactions;
	diff --git a/src/applications/maniphest/command/ManiphestCloseEmailCommand.php b/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
	--- a/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
	+++ b/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
	@@ -24,7 +24,7 @@
	$xactions = array();

	$xactions[] = $object->getApplicationTransactionTemplate()
	- ->setTransactionType(ManiphestTransaction::TYPE_STATUS)
	+ ->setTransactionType(ManiphestTaskStatusTransaction::TRANSACTIONTYPE)
	->setNewValue(ManiphestTaskStatus::getDefaultClosedStatus());

	return $xactions;
	diff --git a/src/applications/maniphest/command/ManiphestPriorityEmailCommand.php b/src/applications/maniphest/command/ManiphestPriorityEmailCommand.php
	--- a/src/applications/maniphest/command/ManiphestPriorityEmailCommand.php
	+++ b/src/applications/maniphest/command/ManiphestPriorityEmailCommand.php
	@@ -71,7 +71,7 @@
	}

	$xactions[] = $object->getApplicationTransactionTemplate()
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($priority);

	return $xactions;
	diff --git a/src/applications/maniphest/command/ManiphestStatusEmailCommand.php b/src/applications/maniphest/command/ManiphestStatusEmailCommand.php
	--- a/src/applications/maniphest/command/ManiphestStatusEmailCommand.php
	+++ b/src/applications/maniphest/command/ManiphestStatusEmailCommand.php
	@@ -73,7 +73,7 @@
	}

	$xactions[] = $object->getApplicationTransactionTemplate()
	- ->setTransactionType(ManiphestTransaction::TYPE_STATUS)
	+ ->setTransactionType(ManiphestTaskStatusTransaction::TRANSACTIONTYPE)
	->setNewValue($status);

	return $xactions;
	diff --git a/src/applications/maniphest/conduit/ManiphestConduitAPIMethod.php b/src/applications/maniphest/conduit/ManiphestConduitAPIMethod.php
	--- a/src/applications/maniphest/conduit/ManiphestConduitAPIMethod.php
	+++ b/src/applications/maniphest/conduit/ManiphestConduitAPIMethod.php
	@@ -60,7 +60,7 @@
	if ($is_new) {
	$task->setTitle((string)$request->getValue('title'));
	$task->setDescription((string)$request->getValue('description'));
	- $changes[ManiphestTransaction::TYPE_STATUS] =
	+ $changes[ManiphestTaskStatusTransaction::TRANSACTIONTYPE] =
	ManiphestTaskStatus::getDefaultStatus();
	$changes[PhabricatorTransactions::TYPE_SUBSCRIBERS] =
	array('+' => array($request->getUser()->getPHID()));
	@@ -73,12 +73,12 @@

	$title = $request->getValue('title');
	if ($title !== null) {
	- $changes[ManiphestTransaction::TYPE_TITLE] = $title;
	+ $changes[ManiphestTaskTitleTransaction::TRANSACTIONTYPE] = $title;
	}

	$desc = $request->getValue('description');
	if ($desc !== null) {
	- $changes[ManiphestTransaction::TYPE_DESCRIPTION] = $desc;
	+ $changes[ManiphestTaskDescriptionTransaction::TRANSACTIONTYPE] = $desc;
	}

	$status = $request->getValue('status');
	@@ -88,7 +88,7 @@
	throw id(new ConduitException('ERR-INVALID-PARAMETER'))
	->setErrorDescription(pht('Status set to invalid value.'));
	}
	- $changes[ManiphestTransaction::TYPE_STATUS] = $status;
	+ $changes[ManiphestTaskStatusTransaction::TRANSACTIONTYPE] = $status;
	}
	}

	@@ -99,7 +99,7 @@
	throw id(new ConduitException('ERR-INVALID-PARAMETER'))
	->setErrorDescription(pht('Priority set to invalid value.'));
	}
	- $changes[ManiphestTransaction::TYPE_PRIORITY] = $priority;
	+ $changes[ManiphestTaskPriorityTransaction::TRANSACTIONTYPE] = $priority;
	}

	$owner_phid = $request->getValue('ownerPHID');
	@@ -108,7 +108,7 @@
	array($owner_phid),
	PhabricatorPeopleUserPHIDType::TYPECONST,
	'ownerPHID');
	- $changes[ManiphestTransaction::TYPE_OWNER] = $owner_phid;
	+ $changes[ManiphestTaskOwnerTransaction::TRANSACTIONTYPE] = $owner_phid;
	}

	$ccs = $request->getValue('ccPHIDs');
	diff --git a/src/applications/maniphest/controller/ManiphestReportController.php b/src/applications/maniphest/controller/ManiphestReportController.php
	--- a/src/applications/maniphest/controller/ManiphestReportController.php
	+++ b/src/applications/maniphest/controller/ManiphestReportController.php
	@@ -93,7 +93,7 @@
	ORDER BY x.dateCreated ASC',
	$table->getTableName(),
	$joins,
	- ManiphestTransaction::TYPE_STATUS);
	+ ManiphestTaskStatusTransaction::TRANSACTIONTYPE);

	$stats = array();
	$day_buckets = array();
	diff --git a/src/applications/maniphest/controller/ManiphestSubpriorityController.php b/src/applications/maniphest/controller/ManiphestSubpriorityController.php
	--- a/src/applications/maniphest/controller/ManiphestSubpriorityController.php
	+++ b/src/applications/maniphest/controller/ManiphestSubpriorityController.php
	@@ -43,11 +43,11 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($pri);

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
	+ ->setTransactionType(ManiphestTaskSubpriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($sub);

	$editor = id(new ManiphestTransactionEditor())
	diff --git a/src/applications/maniphest/controller/ManiphestTaskDetailController.php b/src/applications/maniphest/controller/ManiphestTaskDetailController.php
	--- a/src/applications/maniphest/controller/ManiphestTaskDetailController.php
	+++ b/src/applications/maniphest/controller/ManiphestTaskDetailController.php
	@@ -277,7 +277,7 @@
	$can_create = (bool)$edit_config;

	$can_reassign = $edit_engine->hasEditAccessToTransaction(
	- ManiphestTransaction::TYPE_OWNER);
	+ ManiphestTaskOwnerTransaction::TRANSACTIONTYPE);

	if ($can_create) {
	$form_key = $edit_config->getIdentifier();
	diff --git a/src/applications/maniphest/editor/ManiphestEditEngine.php b/src/applications/maniphest/editor/ManiphestEditEngine.php
	--- a/src/applications/maniphest/editor/ManiphestEditEngine.php
	+++ b/src/applications/maniphest/editor/ManiphestEditEngine.php
	@@ -150,7 +150,7 @@
	->setConduitDescription(pht('Create as a subtask of another task.'))
	->setConduitTypeDescription(pht('PHID of the parent task.'))
	->setAliases(array('parentPHID'))
	- ->setTransactionType(ManiphestTransaction::TYPE_PARENT)
	+ ->setTransactionType(ManiphestTaskParentTransaction::TRANSACTIONTYPE)
	->setHandleParameterType(new ManiphestTaskListHTTPParameterType())
	->setSingleValue(null)
	->setIsReorderable(false)
	@@ -179,7 +179,7 @@
	->setDescription(pht('Name of the task.'))
	->setConduitDescription(pht('Rename the task.'))
	->setConduitTypeDescription(pht('New task name.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_TITLE)
	+ ->setTransactionType(ManiphestTaskTitleTransaction::TRANSACTIONTYPE)
	->setIsRequired(true)
	->setValue($object->getTitle()),
	id(new PhabricatorUsersEditField())
	@@ -190,7 +190,7 @@
	->setConduitDescription(pht('Reassign the task.'))
	->setConduitTypeDescription(
	pht('New task owner, or `null` to unassign.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
	+ ->setTransactionType(ManiphestTaskOwnerTransaction::TRANSACTIONTYPE)
	->setIsCopyable(true)
	->setSingleValue($object->getOwnerPHID())
	->setCommentActionLabel(pht('Assign / Claim'))
	@@ -201,7 +201,7 @@
	->setDescription(pht('Status of the task.'))
	->setConduitDescription(pht('Change the task status.'))
	->setConduitTypeDescription(pht('New task status constant.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_STATUS)
	+ ->setTransactionType(ManiphestTaskStatusTransaction::TRANSACTIONTYPE)
	->setIsCopyable(true)
	->setValue($object->getStatus())
	->setOptions($status_map)
	@@ -213,7 +213,7 @@
	->setDescription(pht('Priority of the task.'))
	->setConduitDescription(pht('Change the priority of the task.'))
	->setConduitTypeDescription(pht('New task priority constant.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setIsCopyable(true)
	->setValue($object->getPriority())
	->setOptions($priority_map)
	@@ -230,7 +230,7 @@
	->setDescription(pht('Point value of the task.'))
	->setConduitDescription(pht('Change the task point value.'))
	->setConduitTypeDescription(pht('New task point value.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_POINTS)
	+ ->setTransactionType(ManiphestTaskPointsTransaction::TRANSACTIONTYPE)
	->setIsCopyable(true)
	->setValue($object->getPoints())
	->setCommentActionLabel($action_label);
	@@ -242,7 +242,7 @@
	->setDescription(pht('Task description.'))
	->setConduitDescription(pht('Update the task description.'))
	->setConduitTypeDescription(pht('New task description.'))
	- ->setTransactionType(ManiphestTransaction::TYPE_DESCRIPTION)
	+ ->setTransactionType(ManiphestTaskDescriptionTransaction::TRANSACTIONTYPE)
	->setValue($object->getDescription())
	->setPreviewPanel(
	id(new PHUIRemarkupPreviewPanel())
	diff --git a/src/applications/maniphest/editor/ManiphestTransactionEditor.php b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
	--- a/src/applications/maniphest/editor/ManiphestTransactionEditor.php
	+++ b/src/applications/maniphest/editor/ManiphestTransactionEditor.php
	@@ -18,18 +18,6 @@

	$types[] = PhabricatorTransactions::TYPE_COMMENT;
	$types[] = PhabricatorTransactions::TYPE_EDGE;
	- $types[] = ManiphestTransaction::TYPE_PRIORITY;
	- $types[] = ManiphestTransaction::TYPE_STATUS;
	- $types[] = ManiphestTransaction::TYPE_TITLE;
	- $types[] = ManiphestTransaction::TYPE_DESCRIPTION;
	- $types[] = ManiphestTransaction::TYPE_OWNER;
	- $types[] = ManiphestTransaction::TYPE_SUBPRIORITY;
	- $types[] = ManiphestTransaction::TYPE_MERGED_INTO;
	- $types[] = ManiphestTransaction::TYPE_MERGED_FROM;
	- $types[] = ManiphestTransaction::TYPE_UNBLOCK;
	- $types[] = ManiphestTransaction::TYPE_PARENT;
	- $types[] = ManiphestTransaction::TYPE_COVER_IMAGE;
	- $types[] = ManiphestTransaction::TYPE_POINTS;
	$types[] = PhabricatorTransactions::TYPE_COLUMNS;
	$types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
	$types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
	@@ -37,85 +25,6 @@
	return $types;
	}

	- protected function getCustomTransactionOldValue(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_PRIORITY:
	- if ($this->getIsNewObject()) {
	- return null;
	- }
	- return (int)$object->getPriority();
	- case ManiphestTransaction::TYPE_STATUS:
	- if ($this->getIsNewObject()) {
	- return null;
	- }
	- return $object->getStatus();
	- case ManiphestTransaction::TYPE_TITLE:
	- if ($this->getIsNewObject()) {
	- return null;
	- }
	- return $object->getTitle();
	- case ManiphestTransaction::TYPE_DESCRIPTION:
	- if ($this->getIsNewObject()) {
	- return null;
	- }
	- return $object->getDescription();
	- case ManiphestTransaction::TYPE_OWNER:
	- return nonempty($object->getOwnerPHID(), null);
	- case ManiphestTransaction::TYPE_SUBPRIORITY:
	- return $object->getSubpriority();
	- case ManiphestTransaction::TYPE_COVER_IMAGE:
	- return $object->getCoverImageFilePHID();
	- case ManiphestTransaction::TYPE_POINTS:
	- $points = $object->getPoints();
	- if ($points !== null) {
	- $points = (double)$points;
	- }
	- return $points;
	- case ManiphestTransaction::TYPE_MERGED_INTO:
	- case ManiphestTransaction::TYPE_MERGED_FROM:
	- return null;
	- case ManiphestTransaction::TYPE_PARENT:
	- case PhabricatorTransactions::TYPE_COLUMNS:
	- return null;
	- }
	- }
	-
	- protected function getCustomTransactionNewValue(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_PRIORITY:
	- return (int)$xaction->getNewValue();
	- case ManiphestTransaction::TYPE_OWNER:
	- return nonempty($xaction->getNewValue(), null);
	- case ManiphestTransaction::TYPE_STATUS:
	- case ManiphestTransaction::TYPE_TITLE:
	- case ManiphestTransaction::TYPE_DESCRIPTION:
	- case ManiphestTransaction::TYPE_SUBPRIORITY:
	- case ManiphestTransaction::TYPE_MERGED_INTO:
	- case ManiphestTransaction::TYPE_MERGED_FROM:
	- case ManiphestTransaction::TYPE_UNBLOCK:
	- case ManiphestTransaction::TYPE_COVER_IMAGE:
	- return $xaction->getNewValue();
	- case ManiphestTransaction::TYPE_PARENT:
	- case PhabricatorTransactions::TYPE_COLUMNS:
	- return $xaction->getNewValue();
	- case ManiphestTransaction::TYPE_POINTS:
	- $value = $xaction->getNewValue();
	- if (!strlen($value)) {
	- $value = null;
	- }
	- if ($value !== null) {
	- $value = (double)$value;
	- }
	- return $value;
	- }
	- }
	-
	protected function transactionHasEffect(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {
	@@ -131,103 +40,16 @@
	return parent::transactionHasEffect($object, $xaction);
	}

	- protected function applyCustomInternalTransaction(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_PRIORITY:
	- return $object->setPriority($xaction->getNewValue());
	- case ManiphestTransaction::TYPE_STATUS:
	- return $object->setStatus($xaction->getNewValue());
	- case ManiphestTransaction::TYPE_TITLE:
	- return $object->setTitle($xaction->getNewValue());
	- case ManiphestTransaction::TYPE_DESCRIPTION:
	- return $object->setDescription($xaction->getNewValue());
	- case ManiphestTransaction::TYPE_OWNER:
	- $phid = $xaction->getNewValue();
	-
	- // Update the "ownerOrdering" column to contain the full name of the
	- // owner, if the task is assigned.
	-
	- $handle = null;
	- if ($phid) {
	- $handle = id(new PhabricatorHandleQuery())
	- ->setViewer($this->getActor())
	- ->withPHIDs(array($phid))
	- ->executeOne();
	- }
	-
	- if ($handle) {
	- $object->setOwnerOrdering($handle->getName());
	- } else {
	- $object->setOwnerOrdering(null);
	- }
	-
	- return $object->setOwnerPHID($phid);
	- case ManiphestTransaction::TYPE_SUBPRIORITY:
	- $object->setSubpriority($xaction->getNewValue());
	- return;
	- case ManiphestTransaction::TYPE_MERGED_INTO:
	- $object->setStatus(ManiphestTaskStatus::getDuplicateStatus());
	- return;
	- case ManiphestTransaction::TYPE_COVER_IMAGE:
	- $file_phid = $xaction->getNewValue();
	-
	- if ($file_phid) {
	- $file = id(new PhabricatorFileQuery())
	- ->setViewer($this->getActor())
	- ->withPHIDs(array($file_phid))
	- ->executeOne();
	- } else {
	- $file = null;
	- }
	-
	- if (!$file \|\| !$file->isTransformableImage()) {
	- $object->setProperty('cover.filePHID', null);
	- $object->setProperty('cover.thumbnailPHID', null);
	- return;
	- }
	-
	- $xform_key = PhabricatorFileThumbnailTransform::TRANSFORM_WORKCARD;
	-
	- $xform = PhabricatorFileTransform::getTransformByKey($xform_key)
	- ->executeTransform($file);
	-
	- $object->setProperty('cover.filePHID', $file->getPHID());
	- $object->setProperty('cover.thumbnailPHID', $xform->getPHID());
	- return;
	- case ManiphestTransaction::TYPE_POINTS:
	- $object->setPoints($xaction->getNewValue());
	- return;
	- case ManiphestTransaction::TYPE_MERGED_FROM:
	- case ManiphestTransaction::TYPE_PARENT:
	- case PhabricatorTransactions::TYPE_COLUMNS:
	- return;
	- }
	- }
	-
	protected function applyCustomExternalTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_PARENT:
	- $parent_phid = $xaction->getNewValue();
	- $parent_type = ManiphestTaskDependsOnTaskEdgeType::EDGECONST;
	- $task_phid = $object->getPHID();
	-
	- id(new PhabricatorEdgeEditor())
	- ->addEdge($parent_phid, $parent_type, $task_phid)
	- ->save();
	- break;
	case PhabricatorTransactions::TYPE_COLUMNS:
	foreach ($xaction->getNewValue() as $move) {
	$this->applyBoardMove($object, $move);
	}
	break;
	- default:
	- break;
	}
	}

	@@ -240,7 +62,7 @@
	$unblock_xaction = null;
	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_STATUS:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	$unblock_xaction = $xaction;
	break;
	}
	@@ -265,7 +87,8 @@

	foreach ($blocked_tasks as $blocked_task) {
	$parent_xaction = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_UNBLOCK)
	+ ->setTransactionType(
	+ ManiphestTaskUnblockTransaction::TRANSACTIONTYPE)
	->setOldValue(array($object->getPHID() => $old))
	->setNewValue(array($object->getPHID() => $new));

	@@ -426,11 +249,11 @@
	parent::requireCapabilities($object, $xaction);

	$app_capability_map = array(
	- ManiphestTransaction::TYPE_PRIORITY =>
	+ ManiphestTaskPriorityTransaction::TRANSACTIONTYPE =>
	ManiphestEditPriorityCapability::CAPABILITY,
	- ManiphestTransaction::TYPE_STATUS =>
	+ ManiphestTaskStatusTransaction::TRANSACTIONTYPE =>
	ManiphestEditStatusCapability::CAPABILITY,
	- ManiphestTransaction::TYPE_OWNER =>
	+ ManiphestTaskOwnerTransaction::TRANSACTIONTYPE =>
	ManiphestEditAssignCapability::CAPABILITY,
	PhabricatorTransactions::TYPE_EDIT_POLICY =>
	ManiphestEditPoliciesCapability::CAPABILITY,
	@@ -471,7 +294,7 @@
	$copy = parent::adjustObjectForPolicyChecks($object, $xactions);
	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	$copy->setOwnerPHID($xaction->getNewValue());
	break;
	default:
	@@ -637,23 +460,7 @@
	$errors = parent::validateTransaction($object, $type, $xactions);

	switch ($type) {
	- case ManiphestTransaction::TYPE_TITLE:
	- $missing = $this->validateIsEmptyTextField(
	- $object->getTitle(),
	- $xactions);
	-
	- if ($missing) {
	- $error = new PhabricatorApplicationTransactionValidationError(
	- $type,
	- pht('Required'),
	- pht('Task title is required.'),
	- nonempty(last($xactions), null));
	-
	- $error->setIsMissingFieldError(true);
	- $errors[] = $error;
	- }
	- break;
	- case ManiphestTransaction::TYPE_PARENT:
	+ case ManiphestTaskParentTransaction::TRANSACTIONTYPE:
	$with_effect = array();
	foreach ($xactions as $xaction) {
	$task_phid = $xaction->getNewValue();
	@@ -689,7 +496,7 @@
	last($with_effect));
	}
	break;
	- case ManiphestTransaction::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	foreach ($xactions as $xaction) {
	$old = $xaction->getOldValue();
	$new = $xaction->getNewValue();
	@@ -716,43 +523,8 @@
	}
	}
	break;
	- case ManiphestTransaction::TYPE_COVER_IMAGE:
	- foreach ($xactions as $xaction) {
	- $old = $xaction->getOldValue();
	- $new = $xaction->getNewValue();
	- if (!$new) {
	- continue;
	- }
	-
	- if ($new === $old) {
	- continue;
	- }
	-
	- $file = id(new PhabricatorFileQuery())
	- ->setViewer($this->getActor())
	- ->withPHIDs(array($new))
	- ->executeOne();
	- if (!$file) {
	- $errors[] = new PhabricatorApplicationTransactionValidationError(
	- $type,
	- pht('Invalid'),
	- pht('File "%s" is not valid.', $new),
	- $xaction);
	- continue;
	- }
	-
	- if (!$file->isTransformableImage()) {
	- $errors[] = new PhabricatorApplicationTransactionValidationError(
	- $type,
	- pht('Invalid'),
	- pht('File "%s" is not a valid image file.', $new),
	- $xaction);
	- continue;
	- }
	- }
	- break;

	- case ManiphestTransaction::TYPE_POINTS:
	+ case ManiphestTaskPointsTransaction::TRANSACTIONTYPE:
	foreach ($xactions as $xaction) {
	$new = $xaction->getNewValue();
	if (strlen($new) && !is_numeric($new)) {
	@@ -806,7 +578,8 @@

	$any_assign = false;
	foreach ($xactions as $xaction) {
	- if ($xaction->getTransactionType() == ManiphestTransaction::TYPE_OWNER) {
	+ if ($xaction->getTransactionType() ==
	+ ManiphestTaskOwnerTransaction::TRANSACTIONTYPE) {
	$any_assign = true;
	break;
	}
	@@ -817,7 +590,7 @@
	$new_status = null;
	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_STATUS:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	$new_status = $xaction->getNewValue();
	break;
	}
	@@ -838,7 +611,7 @@
	// Don't claim the task if the status is configured to not claim.
	if ($actor_phid && $is_claim) {
	$results[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
	+ ->setTransactionType(ManiphestTaskOwnerTransaction::TRANSACTIONTYPE)
	->setNewValue($actor_phid);
	}
	}
	@@ -881,7 +654,7 @@
	$this->moreValidationErrors[] = $error;
	}
	break;
	- case ManiphestTransaction::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	// If this is a no-op update, don't expand it.
	$old_value = $object->getOwnerPHID();
	$new_value = $xaction->getNewValue();
	@@ -906,20 +679,6 @@
	return $results;
	}

	- protected function extractFilePHIDsFromCustomTransaction(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	- $phids = parent::extractFilePHIDsFromCustomTransaction($object, $xaction);
	-
	- switch ($xaction->getTransactionType()) {
	- case ManiphestTransaction::TYPE_COVER_IMAGE:
	- $phids[] = $xaction->getNewValue();
	- break;
	- }
	-
	- return $phids;
	- }
	-
	private function buildMoveTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {
	diff --git a/src/applications/maniphest/herald/ManiphestTaskAssignHeraldAction.php b/src/applications/maniphest/herald/ManiphestTaskAssignHeraldAction.php
	--- a/src/applications/maniphest/herald/ManiphestTaskAssignHeraldAction.php
	+++ b/src/applications/maniphest/herald/ManiphestTaskAssignHeraldAction.php
	@@ -40,7 +40,7 @@
	}

	$xaction = $adapter->newTransaction()
	- ->setTransactionType(ManiphestTransaction::TYPE_OWNER)
	+ ->setTransactionType(ManiphestTaskOwnerTransaction::TRANSACTIONTYPE)
	->setNewValue($phid);

	$adapter->queueTransaction($xaction);
	diff --git a/src/applications/maniphest/herald/ManiphestTaskPriorityHeraldAction.php b/src/applications/maniphest/herald/ManiphestTaskPriorityHeraldAction.php
	--- a/src/applications/maniphest/herald/ManiphestTaskPriorityHeraldAction.php
	+++ b/src/applications/maniphest/herald/ManiphestTaskPriorityHeraldAction.php
	@@ -40,7 +40,7 @@
	}

	$xaction = $adapter->newTransaction()
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($priority);

	$adapter->queueTransaction($xaction);
	diff --git a/src/applications/maniphest/herald/ManiphestTaskStatusHeraldAction.php b/src/applications/maniphest/herald/ManiphestTaskStatusHeraldAction.php
	--- a/src/applications/maniphest/herald/ManiphestTaskStatusHeraldAction.php
	+++ b/src/applications/maniphest/herald/ManiphestTaskStatusHeraldAction.php
	@@ -40,7 +40,7 @@
	}

	$xaction = $adapter->newTransaction()
	- ->setTransactionType(ManiphestTransaction::TYPE_STATUS)
	+ ->setTransactionType(ManiphestTaskStatusTransaction::TRANSACTIONTYPE)
	->setNewValue($status);

	$adapter->queueTransaction($xaction);
	diff --git a/src/applications/maniphest/lipsum/PhabricatorManiphestTaskTestDataGenerator.php b/src/applications/maniphest/lipsum/PhabricatorManiphestTaskTestDataGenerator.php
	--- a/src/applications/maniphest/lipsum/PhabricatorManiphestTaskTestDataGenerator.php
	+++ b/src/applications/maniphest/lipsum/PhabricatorManiphestTaskTestDataGenerator.php
	@@ -22,15 +22,15 @@
	$template = new ManiphestTransaction();
	// Accumulate Transactions
	$changes = array();
	- $changes[ManiphestTransaction::TYPE_TITLE] =
	+ $changes[ManiphestTaskTitleTransaction::TRANSACTIONTYPE] =
	$this->generateTitle();
	- $changes[ManiphestTransaction::TYPE_DESCRIPTION] =
	+ $changes[ManiphestTaskDescriptionTransaction::TRANSACTIONTYPE] =
	$this->generateDescription();
	- $changes[ManiphestTransaction::TYPE_OWNER] =
	+ $changes[ManiphestTaskOwnerTransaction::TRANSACTIONTYPE] =
	$this->loadOwnerPHID();
	- $changes[ManiphestTransaction::TYPE_STATUS] =
	+ $changes[ManiphestTaskStatusTransaction::TRANSACTIONTYPE] =
	$this->generateTaskStatus();
	- $changes[ManiphestTransaction::TYPE_PRIORITY] =
	+ $changes[ManiphestTaskPriorityTransaction::TRANSACTIONTYPE] =
	$this->generateTaskPriority();
	$changes[PhabricatorTransactions::TYPE_SUBSCRIBERS] =
	array('=' => $this->getCCPHIDs());
	diff --git a/src/applications/maniphest/storage/ManiphestTransaction.php b/src/applications/maniphest/storage/ManiphestTransaction.php
	--- a/src/applications/maniphest/storage/ManiphestTransaction.php
	+++ b/src/applications/maniphest/storage/ManiphestTransaction.php
	@@ -1,25 +1,7 @@
	<?php

	final class ManiphestTransaction
	- extends PhabricatorApplicationTransaction {
	-
	- const TYPE_TITLE = 'title';
	- const TYPE_STATUS = 'status';
	- const TYPE_DESCRIPTION = 'description';
	- const TYPE_OWNER = 'reassign';
	- const TYPE_PRIORITY = 'priority';
	- const TYPE_EDGE = 'edge';
	- const TYPE_SUBPRIORITY = 'subpriority';
	- const TYPE_MERGED_INTO = 'mergedinto';
	- const TYPE_MERGED_FROM = 'mergedfrom';
	- const TYPE_UNBLOCK = 'unblock';
	- const TYPE_PARENT = 'parent';
	- const TYPE_COVER_IMAGE = 'cover-image';
	- const TYPE_POINTS = 'points';
	-
	- // NOTE: this type is deprecated. Keep it around for legacy installs
	- // so any transactions render correctly.
	- const TYPE_ATTACH = 'attach';
	+ extends PhabricatorModularTransaction {

	const MAILTAG_STATUS = 'maniphest-status';
	const MAILTAG_OWNER = 'maniphest-owner';
	@@ -44,30 +26,20 @@
	return new ManiphestTransactionComment();
	}

	+ public function getBaseTransactionClass() {
	+ return 'ManiphestTaskTransactionType';
	+ }
	+
	public function shouldGenerateOldValue() {
	switch ($this->getTransactionType()) {
	- case self::TYPE_EDGE:
	- case self::TYPE_UNBLOCK:
	+ case ManiphestTaskEdgeTransaction::TRANSACTIONTYPE:
	+ case ManiphestTaskUnblockTransaction::TRANSACTIONTYPE:
	return false;
	}

	return parent::shouldGenerateOldValue();
	}

	- protected function newRemarkupChanges() {
	- $changes = array();
	-
	- switch ($this->getTransactionType()) {
	- case self::TYPE_DESCRIPTION:
	- $changes[] = $this->newRemarkupChange()
	- ->setOldValue($this->getOldValue())
	- ->setNewValue($this->getNewValue());
	- break;
	- }
	-
	- return $changes;
	- }
	-
	public function getRequiredHandlePHIDs() {
	$phids = parent::getRequiredHandlePHIDs();

	@@ -75,7 +47,7 @@
	$old = $this->getOldValue();

	switch ($this->getTransactionType()) {
	- case self::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	if ($new) {
	$phids[] = $new;
	}
	@@ -84,13 +56,13 @@
	$phids[] = $old;
	}
	break;
	- case self::TYPE_MERGED_INTO:
	+ case ManiphestTaskMergedIntoTransaction::TRANSACTIONTYPE:
	$phids[] = $new;
	break;
	- case self::TYPE_MERGED_FROM:
	+ case ManiphestTaskMergedFromTransaction::TRANSACTIONTYPE:
	$phids = array_merge($phids, $new);
	break;
	- case self::TYPE_EDGE:
	+ case ManiphestTaskEdgeTransaction::TRANSACTIONTYPE:
	$phids = array_mergev(
	array(
	$phids,
	@@ -98,7 +70,7 @@
	array_keys(nonempty($new, array())),
	));
	break;
	- case self::TYPE_ATTACH:
	+ case ManiphestTaskAttachTransaction::TRANSACTIONTYPE:
	$old = nonempty($old, array());
	$new = nonempty($new, array());
	$phids = array_mergev(
	@@ -108,12 +80,12 @@
	array_keys(idx($old, 'FILE', array())),
	));
	break;
	- case self::TYPE_UNBLOCK:
	+ case ManiphestTaskUnblockTransaction::TRANSACTIONTYPE:
	foreach (array_keys($new) as $phid) {
	$phids[] = $phid;
	}
	break;
	- case self::TYPE_STATUS:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	$commit_phid = $this->getMetadataValue('commitPHID');
	if ($commit_phid) {
	$phids[] = $commit_phid;
	@@ -124,41 +96,6 @@
	return $phids;
	}

	- public function shouldHide() {
	- switch ($this->getTransactionType()) {
	- case PhabricatorTransactions::TYPE_EDGE:
	- $commit_phid = $this->getMetadataValue('commitPHID');
	- $edge_type = $this->getMetadataValue('edge:type');
	-
	- if ($edge_type == ManiphestTaskHasCommitEdgeType::EDGECONST) {
	- if ($commit_phid) {
	- return true;
	- }
	- }
	- break;
	- case self::TYPE_DESCRIPTION:
	- case self::TYPE_PRIORITY:
	- case self::TYPE_STATUS:
	- if ($this->getOldValue() === null) {
	- return true;
	- } else {
	- return false;
	- }
	- break;
	- case self::TYPE_SUBPRIORITY:
	- case self::TYPE_PARENT:
	- return true;
	- case self::TYPE_COVER_IMAGE:
	- // At least for now, don't show these.
	- return true;
	- case self::TYPE_POINTS:
	- if (!ManiphestTaskPoints::getIsEnabled()) {
	- return true;
	- }
	- }
	-
	- return parent::shouldHide();
	- }

	public function shouldHideForMail(array $xactions) {
	switch ($this->getTransactionType()) {
	@@ -169,230 +106,27 @@
	return parent::shouldHideForMail($xactions);
	}

	- public function shouldHideForFeed() {
	- switch ($this->getTransactionType()) {
	- case self::TYPE_UNBLOCK:
	- // Hide "alice created X, a task blocking Y." from feed because it
	- // will almost always appear adjacent to "alice created Y".
	- $is_new = $this->getMetadataValue('blocker.new');
	- if ($is_new) {
	- return true;
	- }
	- break;
	- case self::TYPE_POINTS:
	- return true;
	- }
	-
	- return parent::shouldHideForFeed();
	- }
	-
	- public function getActionStrength() {
	- switch ($this->getTransactionType()) {
	- case self::TYPE_TITLE:
	- return 1.4;
	- case self::TYPE_STATUS:
	- return 1.3;
	- case self::TYPE_OWNER:
	- return 1.2;
	- case self::TYPE_PRIORITY:
	- return 1.1;
	- }
	-
	- return parent::getActionStrength();
	- }
	-
	-
	- public function getColor() {
	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	- switch ($this->getTransactionType()) {
	- case self::TYPE_OWNER:
	- if ($this->getAuthorPHID() == $new) {
	- return 'green';
	- } else if (!$new) {
	- return 'black';
	- } else if (!$old) {
	- return 'green';
	- } else {
	- return 'green';
	- }
	-
	- case self::TYPE_STATUS:
	- $color = ManiphestTaskStatus::getStatusColor($new);
	- if ($color !== null) {
	- return $color;
	- }
	-
	- if (ManiphestTaskStatus::isOpenStatus($new)) {
	- return 'green';
	- } else {
	- return 'indigo';
	- }
	-
	- case self::TYPE_PRIORITY:
	- if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	- return 'green';
	- } else if ($old > $new) {
	- return 'grey';
	- } else {
	- return 'yellow';
	- }
	-
	- case self::TYPE_MERGED_FROM:
	- return 'orange';
	-
	- case self::TYPE_MERGED_INTO:
	- return 'indigo';
	- }
	-
	- return parent::getColor();
	- }
	-
	public function getActionName() {
	$old = $this->getOldValue();
	$new = $this->getNewValue();
	-
	switch ($this->getTransactionType()) {
	- case self::TYPE_TITLE:
	- if ($old === null) {
	- return pht('Created');
	- }
	-
	- return pht('Retitled');
	-
	- case self::TYPE_STATUS:
	- $action = ManiphestTaskStatus::getStatusActionName($new);
	- if ($action) {
	- return $action;
	- }
	-
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	-
	- if ($new_closed && !$old_closed) {
	- return pht('Closed');
	- } else if (!$new_closed && $old_closed) {
	- return pht('Reopened');
	- } else {
	- return pht('Changed Status');
	- }
	-
	- case self::TYPE_DESCRIPTION:
	- return pht('Edited');
	-
	- case self::TYPE_OWNER:
	- if ($this->getAuthorPHID() == $new) {
	- return pht('Claimed');
	- } else if (!$new) {
	- return pht('Unassigned');
	- } else if (!$old) {
	- return pht('Assigned');
	- } else {
	- return pht('Reassigned');
	- }
	-
	case PhabricatorTransactions::TYPE_COLUMNS:
	return pht('Changed Project Column');
	-
	- case self::TYPE_PRIORITY:
	- if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	- return pht('Triaged');
	- } else if ($old > $new) {
	- return pht('Lowered Priority');
	- } else {
	- return pht('Raised Priority');
	- }
	-
	- case self::TYPE_EDGE:
	- case self::TYPE_ATTACH:
	- return pht('Attached');
	-
	- case self::TYPE_UNBLOCK:
	- $old_status = head($old);
	- $new_status = head($new);
	-
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	-
	- if ($old_closed && !$new_closed) {
	- return pht('Block');
	- } else if (!$old_closed && $new_closed) {
	- return pht('Unblock');
	- } else {
	- return pht('Blocker');
	- }
	-
	- case self::TYPE_MERGED_INTO:
	- case self::TYPE_MERGED_FROM:
	- return pht('Merged');
	-
	}

	return parent::getActionName();
	}

	public function getIcon() {
	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	switch ($this->getTransactionType()) {
	- case self::TYPE_OWNER:
	- return 'fa-user';
	-
	- case self::TYPE_TITLE:
	- if ($old === null) {
	- return 'fa-pencil';
	- }
	-
	- return 'fa-pencil';
	-
	- case self::TYPE_STATUS:
	- $action = ManiphestTaskStatus::getStatusIcon($new);
	- if ($action !== null) {
	- return $action;
	- }
	-
	- if (ManiphestTaskStatus::isClosedStatus($new)) {
	- return 'fa-check';
	- } else {
	- return 'fa-pencil';
	- }
	-
	- case self::TYPE_DESCRIPTION:
	- return 'fa-pencil';
	-
	case PhabricatorTransactions::TYPE_COLUMNS:
	return 'fa-columns';
	-
	- case self::TYPE_MERGED_INTO:
	- return 'fa-check';
	- case self::TYPE_MERGED_FROM:
	- return 'fa-compress';
	-
	- case self::TYPE_PRIORITY:
	- if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	- return 'fa-arrow-right';
	- } else if ($old > $new) {
	- return 'fa-arrow-down';
	- } else {
	- return 'fa-arrow-up';
	- }
	-
	- case self::TYPE_EDGE:
	- case self::TYPE_ATTACH:
	- return 'fa-thumb-tack';
	-
	- case self::TYPE_UNBLOCK:
	- return 'fa-shield';
	-
	}

	return parent::getIcon();
	}


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

	@@ -400,244 +134,13 @@
	$new = $this->getNewValue();

	switch ($this->getTransactionType()) {
	- case PhabricatorTransactions::TYPE_CREATE:
	- return pht(
	- '%s created this task.',
	- $this->renderHandleLink($author_phid));
	case PhabricatorTransactions::TYPE_SUBTYPE:
	return pht(
	'%s changed the subtype of this task from "%s" to "%s".',
	$this->renderHandleLink($author_phid),
	$this->renderSubtypeName($old),
	$this->renderSubtypeName($new));
	- case self::TYPE_TITLE:
	- if ($old === null) {
	- return pht(
	- '%s created this task.',
	- $this->renderHandleLink($author_phid));
	- }
	- return pht(
	- '%s changed the title from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old,
	- $new);
	-
	- case self::TYPE_DESCRIPTION:
	- return pht(
	- '%s edited the task description.',
	- $this->renderHandleLink($author_phid));
	-
	- case self::TYPE_STATUS:
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	-
	- $old_name = ManiphestTaskStatus::getTaskStatusName($old);
	- $new_name = ManiphestTaskStatus::getTaskStatusName($new);
	-
	- $commit_phid = $this->getMetadataValue('commitPHID');
	-
	- if ($new_closed && !$old_closed) {
	- if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
	- if ($commit_phid) {
	- return pht(
	- '%s closed this task as a duplicate by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s closed this task as a duplicate.',
	- $this->renderHandleLink($author_phid));
	- }
	- } else {
	- if ($commit_phid) {
	- return pht(
	- '%s closed this task as "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s closed this task as "%s".',
	- $this->renderHandleLink($author_phid),
	- $new_name);
	- }
	- }
	- } else if (!$new_closed && $old_closed) {
	- if ($commit_phid) {
	- return pht(
	- '%s reopened this task as "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s reopened this task as "%s".',
	- $this->renderHandleLink($author_phid),
	- $new_name);
	- }
	- } else {
	- if ($commit_phid) {
	- return pht(
	- '%s changed the task status from "%s" to "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $old_name,
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s changed the task status from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old_name,
	- $new_name);
	- }
	- }
	-
	- case self::TYPE_UNBLOCK:
	- $blocker_phid = key($new);
	- $old_status = head($old);
	- $new_status = head($new);
	-
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	-
	- $old_name = ManiphestTaskStatus::getTaskStatusName($old_status);
	- $new_name = ManiphestTaskStatus::getTaskStatusName($new_status);
	-
	- if ($this->getMetadataValue('blocker.new')) {
	- return pht(
	- '%s created subtask %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid));
	- } else if ($old_closed && !$new_closed) {
	- return pht(
	- '%s reopened subtask %s as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $new_name);
	- } else if (!$old_closed && $new_closed) {
	- return pht(
	- '%s closed subtask %s as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $new_name);
	- } else {
	- return pht(
	- '%s changed the status of subtask %s from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $old_name,
	- $new_name);
	- }
	-
	- case self::TYPE_OWNER:
	- if ($author_phid == $new) {
	- return pht(
	- '%s claimed this task.',
	- $this->renderHandleLink($author_phid));
	- } else if (!$new) {
	- return pht(
	- '%s removed %s as the assignee of this task.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($old));
	- } else if (!$old) {
	- return pht(
	- '%s assigned this task to %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($new));
	- } else {
	- return pht(
	- '%s reassigned this task from %s to %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($old),
	- $this->renderHandleLink($new));
	- }
	-
	- case self::TYPE_PRIORITY:
	- $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
	- $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
	-
	- if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	- return pht(
	- '%s triaged this task as "%s" priority.',
	- $this->renderHandleLink($author_phid),
	- $new_name);
	- } else if ($old > $new) {
	- return pht(
	- '%s lowered the priority of this task from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old_name,
	- $new_name);
	- } else {
	- return pht(
	- '%s raised the priority of this task from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old_name,
	- $new_name);
	- }
	-
	- case self::TYPE_ATTACH:
	- $old = nonempty($old, array());
	- $new = nonempty($new, array());
	- $new = array_keys(idx($new, 'FILE', array()));
	- $old = array_keys(idx($old, 'FILE', array()));
	-
	- $added = array_diff($new, $old);
	- $removed = array_diff($old, $new);
	- if ($added && !$removed) {
	- return pht(
	- '%s attached %s file(s): %s.',
	- $this->renderHandleLink($author_phid),
	- phutil_count($added),
	- $this->renderHandleList($added));
	- } else if ($removed && !$added) {
	- return pht(
	- '%s detached %s file(s): %s.',
	- $this->renderHandleLink($author_phid),
	- phutil_count($removed),
	- $this->renderHandleList($removed));
	- } else {
	- return pht(
	- '%s changed file(s), attached %s: %s; detached %s: %s.',
	- $this->renderHandleLink($author_phid),
	- phutil_count($added),
	- $this->renderHandleList($added),
	- phutil_count($removed),
	- $this->renderHandleList($removed));
	- }
	-
	- case self::TYPE_MERGED_INTO:
	- return pht(
	- '%s closed this task as a duplicate of %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($new));
	break;
	-
	- case self::TYPE_MERGED_FROM:
	- return pht(
	- '%s merged %s task(s): %s.',
	- $this->renderHandleLink($author_phid),
	- phutil_count($new),
	- $this->renderHandleList($new));
	- break;
	-
	- case self::TYPE_POINTS:
	- if ($old === null) {
	- return pht(
	- '%s set the point value for this task to %s.',
	- $this->renderHandleLink($author_phid),
	- $new);
	- } else if ($new === null) {
	- return pht(
	- '%s removed the point value for this task.',
	- $this->renderHandleLink($author_phid));
	- } else {
	- return pht(
	- '%s changed the point value for this task from %s to %s.',
	- $this->renderHandleLink($author_phid),
	- $old,
	- $new);
	- }
	-
	}

	return parent::getTitle();
	@@ -651,236 +154,6 @@
	$new = $this->getNewValue();

	switch ($this->getTransactionType()) {
	- case self::TYPE_TITLE:
	- if ($old === null) {
	- return pht(
	- '%s created %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid));
	- }
	-
	- return pht(
	- '%s renamed %s from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $old,
	- $new);
	-
	- case self::TYPE_DESCRIPTION:
	- return pht(
	- '%s edited the description of %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid));
	-
	- case self::TYPE_STATUS:
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	-
	- $old_name = ManiphestTaskStatus::getTaskStatusName($old);
	- $new_name = ManiphestTaskStatus::getTaskStatusName($new);
	-
	- $commit_phid = $this->getMetadataValue('commitPHID');
	-
	- if ($new_closed && !$old_closed) {
	- if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
	- if ($commit_phid) {
	- return pht(
	- '%s closed %s as a duplicate by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s closed %s as a duplicate.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid));
	- }
	- } else {
	- if ($commit_phid) {
	- return pht(
	- '%s closed %s as "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s closed %s as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name);
	- }
	- }
	- } else if (!$new_closed && $old_closed) {
	- if ($commit_phid) {
	- return pht(
	- '%s reopened %s as "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s reopened %s as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name);
	- }
	- } else {
	- if ($commit_phid) {
	- return pht(
	- '%s changed the status of %s from "%s" to "%s" by committing %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $old_name,
	- $new_name,
	- $this->renderHandleLink($commit_phid));
	- } else {
	- return pht(
	- '%s changed the status of %s from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $old_name,
	- $new_name);
	- }
	- }
	-
	- case self::TYPE_UNBLOCK:
	- $blocker_phid = key($new);
	- $old_status = head($old);
	- $new_status = head($new);
	-
	- $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	- $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	-
	- $old_name = ManiphestTaskStatus::getTaskStatusName($old_status);
	- $new_name = ManiphestTaskStatus::getTaskStatusName($new_status);
	-
	- if ($old_closed && !$new_closed) {
	- return pht(
	- '%s reopened %s, a subtask of %s, as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name);
	- } else if (!$old_closed && $new_closed) {
	- return pht(
	- '%s closed %s, a subtask of %s, as "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name);
	- } else {
	- return pht(
	- '%s changed the status of %s, a subtask of %s, '.
	- 'from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($blocker_phid),
	- $this->renderHandleLink($object_phid),
	- $old_name,
	- $new_name);
	- }
	-
	- case self::TYPE_OWNER:
	- if ($author_phid == $new) {
	- return pht(
	- '%s claimed %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid));
	- } else if (!$new) {
	- return pht(
	- '%s placed %s up for grabs.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid));
	- } else if (!$old) {
	- return pht(
	- '%s assigned %s to %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $this->renderHandleLink($new));
	- } else {
	- return pht(
	- '%s reassigned %s from %s to %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $this->renderHandleLink($old),
	- $this->renderHandleLink($new));
	- }
	-
	- case self::TYPE_PRIORITY:
	- $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
	- $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
	-
	- if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	- return pht(
	- '%s triaged %s as "%s" priority.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $new_name);
	- } else if ($old > $new) {
	- return pht(
	- '%s lowered the priority of %s from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $old_name,
	- $new_name);
	- } else {
	- return pht(
	- '%s raised the priority of %s from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $old_name,
	- $new_name);
	- }
	-
	- case self::TYPE_ATTACH:
	- $old = nonempty($old, array());
	- $new = nonempty($new, array());
	- $new = array_keys(idx($new, 'FILE', array()));
	- $old = array_keys(idx($old, 'FILE', array()));
	-
	- $added = array_diff($new, $old);
	- $removed = array_diff($old, $new);
	- if ($added && !$removed) {
	- return pht(
	- '%s attached %d file(s) of %s: %s',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- count($added),
	- $this->renderHandleList($added));
	- } else if ($removed && !$added) {
	- return pht(
	- '%s detached %d file(s) of %s: %s',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- count($removed),
	- $this->renderHandleList($removed));
	- } else {
	- return pht(
	- '%s changed file(s) for %s, attached %d: %s; detached %d: %s',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- count($added),
	- $this->renderHandleList($added),
	- count($removed),
	- $this->renderHandleList($removed));
	- }
	-
	- case self::TYPE_MERGED_INTO:
	- return pht(
	- '%s merged task %s into %s.',
	- $this->renderHandleLink($author_phid),
	- $this->renderHandleLink($object_phid),
	- $this->renderHandleLink($new));
	-
	- case self::TYPE_MERGED_FROM:
	- return pht(
	- '%s merged %s task(s) %s into %s.',
	- $this->renderHandleLink($author_phid),
	- phutil_count($new),
	- $this->renderHandleList($new),
	- $this->renderHandleLink($object_phid));
	-
	case PhabricatorTransactions::TYPE_SUBTYPE:
	return pht(
	'%s changed the subtype of %s from "%s" to "%s".',
	@@ -893,39 +166,14 @@
	return parent::getTitleForFeed();
	}

	- private function renderSubtypeName($value) {
	- $object = $this->getObject();
	- $map = $object->newEditEngineSubtypeMap();
	- if (!isset($map[$value])) {
	- return $value;
	- }
	-
	- return $map[$value]->getName();
	- }
	-
	- public function hasChangeDetails() {
	- switch ($this->getTransactionType()) {
	- case self::TYPE_DESCRIPTION:
	- return true;
	- }
	- return parent::hasChangeDetails();
	- }
	-
	- public function renderChangeDetails(PhabricatorUser $viewer) {
	- return $this->renderTextCorpusChangeDetails(
	- $viewer,
	- $this->getOldValue(),
	- $this->getNewValue());
	- }
	-
	public function getMailTags() {
	$tags = array();
	switch ($this->getTransactionType()) {
	- case self::TYPE_MERGED_INTO:
	- case self::TYPE_STATUS:
	+ case ManiphestTaskMergedIntoTransaction::TRANSACTIONTYPE:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	$tags[] = self::MAILTAG_STATUS;
	break;
	- case self::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	$tags[] = self::MAILTAG_OWNER;
	break;
	case PhabricatorTransactions::TYPE_SUBSCRIBERS:
	@@ -941,10 +189,10 @@
	break;
	}
	break;
	- case self::TYPE_PRIORITY:
	+ case ManiphestTaskPriorityTransaction::TRANSACTIONTYPE:
	$tags[] = self::MAILTAG_PRIORITY;
	break;
	- case self::TYPE_UNBLOCK:
	+ case ManiphestTaskUnblockTransaction::TRANSACTIONTYPE:
	$tags[] = self::MAILTAG_UNBLOCK;
	break;
	case PhabricatorTransactions::TYPE_COLUMNS:
	@@ -961,13 +209,12 @@
	}

	public function getNoEffectDescription() {
	-
	switch ($this->getTransactionType()) {
	- case self::TYPE_STATUS:
	+ case ManiphestTaskStatusTransaction::TRANSACTIONTYPE:
	return pht('The task already has the selected status.');
	- case self::TYPE_OWNER:
	+ case ManiphestTaskOwnerTransaction::TRANSACTIONTYPE:
	return pht('The task already has the selected owner.');
	- case self::TYPE_PRIORITY:
	+ case ManiphestTaskPriorityTransaction::TRANSACTIONTYPE:
	return pht('The task already has the selected priority.');
	}

	diff --git a/src/applications/maniphest/xaction/ManiphestTaskAttachTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskAttachTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskAttachTransaction.php
	@@ -0,0 +1,91 @@
	+<?php
	+
	+final class ManiphestTaskAttachTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ // NOTE: this type is deprecated. Keep it around for legacy installs
	+ // so any transactions render correctly.
	+
	+ const TRANSACTIONTYPE = 'attach';
	+
	+ public function getActionName() {
	+ return pht('Attached');
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old = nonempty($old, array());
	+ $new = nonempty($new, array());
	+ $new = array_keys(idx($new, 'FILE', array()));
	+ $old = array_keys(idx($old, 'FILE', array()));
	+
	+ $added = array_diff($new, $old);
	+ $removed = array_diff($old, $new);
	+ if ($added && !$removed) {
	+ return pht(
	+ '%s attached %s file(s): %s.',
	+ $this->renderAuthor(),
	+ phutil_count($added),
	+ $this->renderHandleList($added));
	+ } else if ($removed && !$added) {
	+ return pht(
	+ '%s detached %s file(s): %s.',
	+ $this->renderAuthor(),
	+ phutil_count($removed),
	+ $this->renderHandleList($removed));
	+ } else {
	+ return pht(
	+ '%s changed file(s), attached %s: %s; detached %s: %s.',
	+ $this->renderAuthor(),
	+ phutil_count($added),
	+ $this->renderHandleList($added),
	+ phutil_count($removed),
	+ $this->renderHandleList($removed));
	+ }
	+
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old = nonempty($old, array());
	+ $new = nonempty($new, array());
	+ $new = array_keys(idx($new, 'FILE', array()));
	+ $old = array_keys(idx($old, 'FILE', array()));
	+
	+ $added = array_diff($new, $old);
	+ $removed = array_diff($old, $new);
	+ if ($added && !$removed) {
	+ return pht(
	+ '%s attached %d file(s) of %s: %s',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ count($added),
	+ $this->renderHandleList($added));
	+ } else if ($removed && !$added) {
	+ return pht(
	+ '%s detached %d file(s) of %s: %s',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ count($removed),
	+ $this->renderHandleList($removed));
	+ } else {
	+ return pht(
	+ '%s changed file(s) for %s, attached %d: %s; detached %d: %s',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ count($added),
	+ $this->renderHandleList($added),
	+ count($removed),
	+ $this->renderHandleList($removed));
	+ }
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-thumb-tack';
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskCoverImageTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskCoverImageTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskCoverImageTransaction.php
	@@ -0,0 +1,102 @@
	+<?php
	+
	+final class ManiphestTaskCoverImageTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'cover-image';
	+
	+ public function generateOldValue($object) {
	+ return $object->getCoverImageFilePHID();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $file_phid = $value;
	+
	+ if ($file_phid) {
	+ $file = id(new PhabricatorFileQuery())
	+ ->setViewer($this->getActor())
	+ ->withPHIDs(array($file_phid))
	+ ->executeOne();
	+ } else {
	+ $file = null;
	+ }
	+
	+ if (!$file \|\| !$file->isTransformableImage()) {
	+ $object->setProperty('cover.filePHID', null);
	+ $object->setProperty('cover.thumbnailPHID', null);
	+ return;
	+ }
	+
	+ $xform_key = PhabricatorFileThumbnailTransform::TRANSFORM_WORKCARD;
	+ $xform = PhabricatorFileTransform::getTransformByKey($xform_key)
	+ ->executeTransform($file);
	+
	+ $object->setProperty('cover.filePHID', $file->getPHID());
	+ $object->setProperty('cover.thumbnailPHID', $xform->getPHID());
	+ }
	+
	+ public function shouldHide() {
	+ return true;
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ if ($old === null) {
	+ return pht(
	+ '%s added a cover image.',
	+ $this->renderAuthor());
	+ }
	+
	+ return pht(
	+ '%s updated the cover image.',
	+ $this->renderAuthor());
	+
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ if ($old === null) {
	+ return pht(
	+ '%s added a cover image to %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ }
	+
	+ return pht(
	+ '%s updated the cover image for %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ }
	+
	+ public function validateTransactions($object, array $xactions) {
	+ $errors = array();
	+ $viewer = $this->getActor();
	+
	+ foreach ($xactions as $xaction) {
	+ $file_phid = $xaction->getNewValue();
	+
	+ $file = id(new PhabricatorFileQuery())
	+ ->setViewer($viewer)
	+ ->withPHIDs(array($file_phid))
	+ ->executeOne();
	+
	+ if (!$file) {
	+ $errors[] = $this->newInvalidError(
	+ pht('"%s" is not a valid file PHID.',
	+ $file_phid));
	+ } else {
	+ if (!$file->isViewableInBrowser()) {
	+ $mime_type = $file->getMimeType();
	+ $errors[] = $this->newInvalidError(
	+ pht('File mime type of "%s" is not a valid viewable image.',
	+ $mime_type));
	+ }
	+ }
	+
	+ }
	+
	+ return $errors;
	+ }
	+
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskDescriptionTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskDescriptionTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskDescriptionTransaction.php
	@@ -0,0 +1,61 @@
	+<?php
	+
	+final class ManiphestTaskDescriptionTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'description';
	+
	+ public function generateOldValue($object) {
	+ return $object->getDescription();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setDescription($value);
	+ }
	+
	+ public function getActionName() {
	+ return pht('Edited');
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s updated the task description.',
	+ $this->renderAuthor());
	+ }
	+
	+ public function getTitleForFeed() {
	+ return pht(
	+ '%s updated the task description for %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ }
	+
	+ public function hasChangeDetailView() {
	+ return true;
	+ }
	+
	+ public function getMailDiffSectionHeader() {
	+ return pht('CHANGES TO TASK DESCRIPTION');
	+ }
	+
	+ public function newChangeDetailView() {
	+ $viewer = $this->getViewer();
	+
	+ return id(new PhabricatorApplicationTransactionTextDiffDetailView())
	+ ->setViewer($viewer)
	+ ->setOldText($this->getOldValue())
	+ ->setNewText($this->getNewValue());
	+ }
	+
	+ public function newRemarkupChanges() {
	+ $changes = array();
	+
	+ $changes[] = $this->newRemarkupChange()
	+ ->setOldValue($this->getOldValue())
	+ ->setNewValue($this->getNewValue());
	+
	+ return $changes;
	+ }
	+
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskEdgeTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskEdgeTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskEdgeTransaction.php
	@@ -0,0 +1,31 @@
	+<?php
	+
	+final class ManiphestTaskEdgeTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'edge';
	+
	+ public function generateOldValue($object) {
	+ return null;
	+ }
	+
	+ public function shouldHide() {
	+ $commit_phid = $this->getMetadataValue('commitPHID');
	+ $edge_type = $this->getMetadataValue('edge:type');
	+
	+ if ($edge_type == ManiphestTaskHasCommitEdgeType::EDGECONST) {
	+ if ($commit_phid) {
	+ return true;
	+ }
	+ }
	+ }
	+
	+ public function getActionName() {
	+ return pht('Attached');
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-thumb-tack';
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskMergedFromTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskMergedFromTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskMergedFromTransaction.php
	@@ -0,0 +1,45 @@
	+<?php
	+
	+final class ManiphestTaskMergedFromTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'mergedfrom';
	+
	+ public function generateOldValue($object) {
	+ return null;
	+ }
	+
	+ public function getActionName() {
	+ return pht('Merged');
	+ }
	+
	+ public function getTitle() {
	+ $new = $this->getNewValue();
	+
	+ return pht(
	+ '%s merged %s task(s): %s.',
	+ $this->renderAuthor(),
	+ phutil_count($new),
	+ $this->renderHandleList($new));
	+ }
	+
	+ public function getTitleForFeed() {
	+ $new = $this->getNewValue();
	+
	+ return pht(
	+ '%s merged %s task(s) %s into %s.',
	+ $this->renderAuthor(),
	+ phutil_count($new),
	+ $this->renderHandleList($new),
	+ $this->renderObject());
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-compress';
	+ }
	+
	+ public function getColor() {
	+ return 'orange';
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskMergedIntoTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskMergedIntoTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskMergedIntoTransaction.php
	@@ -0,0 +1,47 @@
	+<?php
	+
	+final class ManiphestTaskMergedIntoTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'mergedinto';
	+
	+ public function generateOldValue($object) {
	+ return null;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setStatus(ManiphestTaskStatus::getDuplicateStatus());
	+ }
	+
	+ public function getActionName() {
	+ return pht('Merged');
	+ }
	+
	+ public function getTitle() {
	+ $new = $this->getNewValue();
	+
	+ return pht(
	+ '%s closed this task as a duplicate of %s.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($new));
	+ }
	+
	+ public function getTitleForFeed() {
	+ $new = $this->getNewValue();
	+
	+ return pht(
	+ '%s merged task %s into %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $this->renderHandleLink($new));
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-check';
	+ }
	+
	+ public function getColor() {
	+ return 'indigo';
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskOwnerTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskOwnerTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskOwnerTransaction.php
	@@ -0,0 +1,130 @@
	+<?php
	+
	+final class ManiphestTaskOwnerTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'reassign';
	+
	+ public function generateOldValue($object) {
	+ return nonempty($object->getOwnerPHID(), null);
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ // Update the "ownerOrdering" column to contain the full name of the
	+ // owner, if the task is assigned.
	+
	+ $handle = null;
	+ if ($value) {
	+ $handle = id(new PhabricatorHandleQuery())
	+ ->setViewer($this->getActor())
	+ ->withPHIDs(array($value))
	+ ->executeOne();
	+ }
	+
	+ if ($handle) {
	+ $object->setOwnerOrdering($handle->getName());
	+ } else {
	+ $object->setOwnerOrdering(null);
	+ }
	+
	+ $object->setOwnerPHID($value);
	+ }
	+
	+ public function getActionStrength() {
	+ return 1.2;
	+ }
	+
	+ public function getActionName() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($this->getAuthorPHID() == $new) {
	+ return pht('Claimed');
	+ } else if (!$new) {
	+ return pht('Unassigned');
	+ } else if (!$old) {
	+ return pht('Assigned');
	+ } else {
	+ return pht('Reassigned');
	+ }
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($this->getAuthorPHID() == $new) {
	+ return pht(
	+ '%s claimed this task.',
	+ $this->renderAuthor());
	+ } else if (!$new) {
	+ return pht(
	+ '%s removed %s as the assignee of this task.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($old));
	+ } else if (!$old) {
	+ return pht(
	+ '%s assigned this task to %s.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($new));
	+ } else {
	+ return pht(
	+ '%s reassigned this task from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($old),
	+ $this->renderHandleLink($new));
	+ }
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($this->getAuthorPHID() == $new) {
	+ return pht(
	+ '%s claimed %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ } else if (!$new) {
	+ return pht(
	+ '%s placed %s up for grabs.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ } else if (!$old) {
	+ return pht(
	+ '%s assigned %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $this->renderHandleLink($new));
	+ } else {
	+ return pht(
	+ '%s reassigned %s from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $this->renderHandleLink($old),
	+ $this->renderHandleLink($new));
	+ }
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-user';
	+ }
	+
	+ public function getColor() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($this->getAuthorPHID() == $new) {
	+ return 'green';
	+ } else if (!$new) {
	+ return 'black';
	+ } else if (!$old) {
	+ return 'green';
	+ } else {
	+ return 'green';
	+ }
	+
	+ }
	+
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskParentTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskParentTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskParentTransaction.php
	@@ -0,0 +1,26 @@
	+<?php
	+
	+final class ManiphestTaskParentTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'parent';
	+
	+ public function generateOldValue($object) {
	+ return null;
	+ }
	+
	+ public function shouldHide() {
	+ return true;
	+ }
	+
	+ public function applyExternalEffects($object, $value) {
	+ $parent_phid = $value;
	+ $parent_type = ManiphestTaskDependsOnTaskEdgeType::EDGECONST;
	+ $task_phid = $object->getPHID();
	+
	+ id(new PhabricatorEdgeEditor())
	+ ->addEdge($parent_phid, $parent_type, $task_phid)
	+ ->save();
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskPointsTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskPointsTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskPointsTransaction.php
	@@ -0,0 +1,60 @@
	+<?php
	+
	+final class ManiphestTaskPointsTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'points';
	+
	+ public function generateOldValue($object) {
	+ $points = $object->getPoints();
	+ if ($points !== null) {
	+ $points = (double)$points;
	+ }
	+ return $points;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ if (!strlen($value)) {
	+ $value = null;
	+ }
	+ if ($value !== null) {
	+ $value = (double)$value;
	+ }
	+ $object->setPoints($value);
	+ }
	+
	+ // TODO: Is this needed without feed story title?
	+ public function shouldHideForFeed() {
	+ return true;
	+ }
	+
	+ public function shouldHide() {
	+ if (!ManiphestTaskPoints::getIsEnabled()) {
	+ return true;
	+ }
	+ return false;
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($old === null) {
	+ return pht(
	+ '%s set the point value for this task to %s.',
	+ $this->renderAuthor(),
	+ $this->renderNewValue());
	+ } else if ($new === null) {
	+ return pht(
	+ '%s removed the point value for this task.',
	+ $this->renderAuthor());
	+ } else {
	+ return pht(
	+ '%s changed the point value for this task from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderOldValue(),
	+ $this->renderNewValue());
	+ }
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskPriorityTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskPriorityTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskPriorityTransaction.php
	@@ -0,0 +1,127 @@
	+<?php
	+
	+final class ManiphestTaskPriorityTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'priority';
	+
	+ public function generateOldValue($object) {
	+ if ($this->isNewObject()) {
	+ return null;
	+ }
	+ return (int)$object->getPriority();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setPriority((int)$value);
	+ }
	+
	+ public function shouldHide() {
	+ if ($this->getOldValue() === null) {
	+ return true;
	+ } else {
	+ return false;
	+ }
	+ }
	+
	+ public function getActionStrength() {
	+ return 1.1;
	+ }
	+
	+ public function getActionName() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	+ return pht('Triaged');
	+ } else if ($old > $new) {
	+ return pht('Lowered Priority');
	+ } else {
	+ return pht('Raised Priority');
	+ }
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
	+ $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
	+
	+ if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	+ return pht(
	+ '%s triaged this task as "%s" priority.',
	+ $this->renderAuthor(),
	+ $new_name);
	+ } else if ($old > $new) {
	+ return pht(
	+ '%s lowered the priority of this task from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $old_name,
	+ $new_name);
	+ } else {
	+ return pht(
	+ '%s raised the priority of this task from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old_name = ManiphestTaskPriority::getTaskPriorityName($old);
	+ $new_name = ManiphestTaskPriority::getTaskPriorityName($new);
	+
	+ if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	+ return pht(
	+ '%s triaged %s as "%s" priority.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $new_name);
	+ } else if ($old > $new) {
	+ return pht(
	+ '%s lowered the priority of %s from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $old_name,
	+ $new_name);
	+ } else {
	+ return pht(
	+ '%s raised the priority of %s from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+
	+ public function getIcon() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	+ return 'fa-arrow-right';
	+ } else if ($old > $new) {
	+ return 'fa-arrow-down';
	+ } else {
	+ return 'fa-arrow-up';
	+ }
	+ }
	+
	+ public function getColor() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($old == ManiphestTaskPriority::getDefaultPriority()) {
	+ return 'green';
	+ } else if ($old > $new) {
	+ return 'grey';
	+ } else {
	+ return 'yellow';
	+ }
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskStatusTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskStatusTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskStatusTransaction.php
	@@ -0,0 +1,232 @@
	+<?php
	+
	+final class ManiphestTaskStatusTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'status';
	+
	+ public function generateOldValue($object) {
	+ if ($this->getIsNewObject()) {
	+ return null;
	+ }
	+ return $object->getStatus();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setStatus($value);
	+ }
	+
	+ public function shouldHide() {
	+ if ($this->getOldValue() === null) {
	+ return true;
	+ } else {
	+ return false;
	+ }
	+ }
	+
	+ public function getActionStrength() {
	+ return 1.3;
	+ }
	+
	+ public function getActionName() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $action = ManiphestTaskStatus::getStatusActionName($new);
	+ if ($action) {
	+ return $action;
	+ }
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	+
	+ if ($new_closed && !$old_closed) {
	+ return pht('Closed');
	+ } else if (!$new_closed && $old_closed) {
	+ return pht('Reopened');
	+ } else {
	+ return pht('Changed Status');
	+ }
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	+
	+ $old_name = ManiphestTaskStatus::getTaskStatusName($old);
	+ $new_name = ManiphestTaskStatus::getTaskStatusName($new);
	+
	+ $commit_phid = $this->getMetadataValue('commitPHID');
	+
	+ if ($new_closed && !$old_closed) {
	+ if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s closed this task as a duplicate by committing %s.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s closed this task as a duplicate.',
	+ $this->renderAuthor());
	+ }
	+ } else {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s closed this task as "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s closed this task as "%s".',
	+ $this->renderAuthor(),
	+ $new_name);
	+ }
	+ }
	+ } else if (!$new_closed && $old_closed) {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s reopened this task as "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s reopened this task as "%s".',
	+ $this->renderAuthor(),
	+ $new_name);
	+ }
	+ } else {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s changed the task status from "%s" to "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $old_name,
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s changed the task status from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new);
	+
	+ $old_name = ManiphestTaskStatus::getTaskStatusName($old);
	+ $new_name = ManiphestTaskStatus::getTaskStatusName($new);
	+
	+ $commit_phid = $this->getMetadataValue('commitPHID');
	+
	+ if ($new_closed && !$old_closed) {
	+ if ($new == ManiphestTaskStatus::getDuplicateStatus()) {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s closed %s as a duplicate by committing %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s closed %s as a duplicate.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ }
	+ } else {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s closed %s as "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s closed %s as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $new_name);
	+ }
	+ }
	+ } else if (!$new_closed && $old_closed) {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s reopened %s as "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s reopened %s as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $new_name);
	+ }
	+ } else {
	+ if ($commit_phid) {
	+ return pht(
	+ '%s changed the status of %s from "%s" to "%s" by committing %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $old_name,
	+ $new_name,
	+ $this->renderHandleLink($commit_phid));
	+ } else {
	+ return pht(
	+ '%s changed the status of %s from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+ }
	+
	+ public function getIcon() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $action = ManiphestTaskStatus::getStatusIcon($new);
	+ if ($action !== null) {
	+ return $action;
	+ }
	+
	+ if (ManiphestTaskStatus::isClosedStatus($new)) {
	+ return 'fa-check';
	+ } else {
	+ return 'fa-pencil';
	+ }
	+ }
	+
	+ public function getColor() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $color = ManiphestTaskStatus::getStatusColor($new);
	+ if ($color !== null) {
	+ return $color;
	+ }
	+
	+ if (ManiphestTaskStatus::isOpenStatus($new)) {
	+ return 'green';
	+ } else {
	+ return 'indigo';
	+ }
	+
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskSubpriorityTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskSubpriorityTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskSubpriorityTransaction.php
	@@ -0,0 +1,21 @@
	+<?php
	+
	+final class ManiphestTaskSubpriorityTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'subpriority';
	+
	+ public function generateOldValue($object) {
	+ return $object->getSubpriority();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setSubpriority($value);
	+ }
	+
	+ public function shouldHide() {
	+ return true;
	+ }
	+
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskTitleTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskTitleTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskTitleTransaction.php
	@@ -0,0 +1,74 @@
	+<?php
	+
	+final class ManiphestTaskTitleTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'title';
	+
	+ public function generateOldValue($object) {
	+ return $object->getTitle();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setTitle($value);
	+ }
	+
	+ public function getActionStrength() {
	+ return 1.4;
	+ }
	+
	+ public function getActionName() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+ if ($old === null) {
	+ return pht('Created');
	+ }
	+
	+ return pht('Retitled');
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ if ($old === null) {
	+ return pht(
	+ '%s created this task.',
	+ $this->renderAuthor());
	+ }
	+
	+ return pht(
	+ '%s changed the title from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderOldValue(),
	+ $this->renderNewValue());
	+
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ if ($old === null) {
	+ return pht(
	+ '%s created %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject());
	+ }
	+
	+ return pht(
	+ '%s changed %s title from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderObject(),
	+ $this->renderOldValue(),
	+ $this->renderNewValue());
	+ }
	+
	+ public function validateTransactions($object, array $xactions) {
	+ $errors = array();
	+
	+ if ($this->isEmptyTextTransaction($object->getTitle(), $xactions)) {
	+ $errors[] = $this->newRequiredError(
	+ pht('Tasks must have a title.'));
	+ }
	+
	+ return $errors;
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskTransactionType.php b/src/applications/maniphest/xaction/ManiphestTaskTransactionType.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskTransactionType.php
	@@ -0,0 +1,16 @@
	+<?php
	+
	+abstract class ManiphestTaskTransactionType
	+ extends PhabricatorModularTransactionType {
	+
	+ public function renderSubtypeName($value) {
	+ $object = $this->getObject();
	+ $map = $object->newEditEngineSubtypeMap();
	+ if (!isset($map[$value])) {
	+ return $value;
	+ }
	+
	+ return $map[$value]->getName();
	+ }
	+
	+}
	diff --git a/src/applications/maniphest/xaction/ManiphestTaskUnblockTransaction.php b/src/applications/maniphest/xaction/ManiphestTaskUnblockTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/maniphest/xaction/ManiphestTaskUnblockTransaction.php
	@@ -0,0 +1,126 @@
	+<?php
	+
	+final class ManiphestTaskUnblockTransaction
	+ extends ManiphestTaskTransactionType {
	+
	+ const TRANSACTIONTYPE = 'unblock';
	+
	+ public function generateOldValue($object) {
	+ return null;
	+ }
	+
	+ // TODO: Is this needed without feed story title?
	+ public function shouldHideForFeed() {
	+ // Hide "alice created X, a task blocking Y." from feed because it
	+ // will almost always appear adjacent to "alice created Y".
	+ $is_new = $this->getMetadataValue('blocker.new');
	+ if ($is_new) {
	+ return true;
	+ }
	+ }
	+
	+ public function getActionName() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $old_status = head($old);
	+ $new_status = head($new);
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	+
	+ if ($old_closed && !$new_closed) {
	+ return pht('Block');
	+ } else if (!$old_closed && $new_closed) {
	+ return pht('Unblock');
	+ } else {
	+ return pht('Blocker');
	+ }
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ $blocker_phid = key($new);
	+ $old_status = head($old);
	+ $new_status = head($new);
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	+
	+ $old_name = ManiphestTaskStatus::getTaskStatusName($old_status);
	+ $new_name = ManiphestTaskStatus::getTaskStatusName($new_status);
	+
	+ if ($this->getMetadataValue('blocker.new')) {
	+ return pht(
	+ '%s created subtask %s.',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid));
	+ } else if ($old_closed && !$new_closed) {
	+ return pht(
	+ '%s reopened subtask %s as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $new_name);
	+ } else if (!$old_closed && $new_closed) {
	+ return pht(
	+ '%s closed subtask %s as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $new_name);
	+ } else {
	+ return pht(
	+ '%s changed the status of subtask %s from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+
	+ public function getTitleForFeed() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+ $blocker_phid = key($new);
	+ $old_status = head($old);
	+ $new_status = head($new);
	+
	+ $old_closed = ManiphestTaskStatus::isClosedStatus($old_status);
	+ $new_closed = ManiphestTaskStatus::isClosedStatus($new_status);
	+
	+ $old_name = ManiphestTaskStatus::getTaskStatusName($old_status);
	+ $new_name = ManiphestTaskStatus::getTaskStatusName($new_status);
	+
	+ if ($old_closed && !$new_closed) {
	+ return pht(
	+ '%s reopened %s, a subtask of %s, as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $this->renderObject(),
	+ $new_name);
	+ } else if (!$old_closed && $new_closed) {
	+ return pht(
	+ '%s closed %s, a subtask of %s, as "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $this->renderObject(),
	+ $new_name);
	+ } else {
	+ return pht(
	+ '%s changed the status of %s, a subtask of %s, '.
	+ 'from "%s" to "%s".',
	+ $this->renderAuthor(),
	+ $this->renderHandleLink($blocker_phid),
	+ $this->renderObject(),
	+ $old_name,
	+ $new_name);
	+ }
	+ }
	+
	+ public function getIcon() {
	+ return 'fa-shield';
	+ }
	+
	+
	+}
	diff --git a/src/applications/project/__tests__/PhabricatorProjectCoreTestCase.php b/src/applications/project/__tests__/PhabricatorProjectCoreTestCase.php
	--- a/src/applications/project/__tests__/PhabricatorProjectCoreTestCase.php
	+++ b/src/applications/project/__tests__/PhabricatorProjectCoreTestCase.php
	@@ -1337,7 +1337,7 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_TITLE)
	+ ->setTransactionType(ManiphestTaskTitleTransaction::TRANSACTIONTYPE)
	->setNewValue($name);

	if ($projects) {
	diff --git a/src/applications/project/controller/PhabricatorProjectCoverController.php b/src/applications/project/controller/PhabricatorProjectCoverController.php
	--- a/src/applications/project/controller/PhabricatorProjectCoverController.php
	+++ b/src/applications/project/controller/PhabricatorProjectCoverController.php
	@@ -36,7 +36,7 @@
	$xactions = array();

	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_COVER_IMAGE)
	+ ->setTransactionType(ManiphestTaskCoverImageTransaction::TRANSACTIONTYPE)
	->setNewValue($file->getPHID());

	$editor = id(new ManiphestTransactionEditor())
	diff --git a/src/applications/project/controller/PhabricatorProjectMoveController.php b/src/applications/project/controller/PhabricatorProjectMoveController.php
	--- a/src/applications/project/controller/PhabricatorProjectMoveController.php
	+++ b/src/applications/project/controller/PhabricatorProjectMoveController.php
	@@ -153,10 +153,11 @@
	$xactions = array();
	if ($pri !== null) {
	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_PRIORITY)
	+ ->setTransactionType(ManiphestTaskPriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($pri);
	$xactions[] = id(new ManiphestTransaction())
	- ->setTransactionType(ManiphestTransaction::TYPE_SUBPRIORITY)
	+ ->setTransactionType(
	+ ManiphestTaskSubpriorityTransaction::TRANSACTIONTYPE)
	->setNewValue($sub);
	}

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