D20595.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
	@@ -2172,9 +2172,11 @@
	'PhabricatorApplicationTransactionCommentView' => 'applications/transactions/view/PhabricatorApplicationTransactionCommentView.php',
	'PhabricatorApplicationTransactionController' => 'applications/transactions/controller/PhabricatorApplicationTransactionController.php',
	'PhabricatorApplicationTransactionDetailController' => 'applications/transactions/controller/PhabricatorApplicationTransactionDetailController.php',
	+ 'PhabricatorApplicationTransactionDetailView' => 'applications/transactions/view/PhabricatorApplicationTransactionDetailView.php',
	'PhabricatorApplicationTransactionEditor' => 'applications/transactions/editor/PhabricatorApplicationTransactionEditor.php',
	'PhabricatorApplicationTransactionFeedStory' => 'applications/transactions/feed/PhabricatorApplicationTransactionFeedStory.php',
	'PhabricatorApplicationTransactionInterface' => 'applications/transactions/interface/PhabricatorApplicationTransactionInterface.php',
	+ 'PhabricatorApplicationTransactionJSONDiffDetailView' => 'applications/transactions/view/PhabricatorApplicationTransactionJSONDiffDetailView.php',
	'PhabricatorApplicationTransactionNoEffectException' => 'applications/transactions/exception/PhabricatorApplicationTransactionNoEffectException.php',
	'PhabricatorApplicationTransactionNoEffectResponse' => 'applications/transactions/response/PhabricatorApplicationTransactionNoEffectResponse.php',
	'PhabricatorApplicationTransactionPublishWorker' => 'applications/transactions/worker/PhabricatorApplicationTransactionPublishWorker.php',
	@@ -3151,16 +3153,26 @@
	'PhabricatorEditEngineConfigurationTransactionQuery' => 'applications/transactions/query/PhabricatorEditEngineConfigurationTransactionQuery.php',
	'PhabricatorEditEngineConfigurationViewController' => 'applications/transactions/controller/PhabricatorEditEngineConfigurationViewController.php',
	'PhabricatorEditEngineController' => 'applications/transactions/controller/PhabricatorEditEngineController.php',
	+ 'PhabricatorEditEngineCreateOrderTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineCreateOrderTransaction.php',
	'PhabricatorEditEngineDatasource' => 'applications/transactions/typeahead/PhabricatorEditEngineDatasource.php',
	+ 'PhabricatorEditEngineDefaultCreateTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineDefaultCreateTransaction.php',
	'PhabricatorEditEngineDefaultLock' => 'applications/transactions/editengine/PhabricatorEditEngineDefaultLock.php',
	+ 'PhabricatorEditEngineDefaultTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineDefaultTransaction.php',
	+ 'PhabricatorEditEngineDisableTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineDisableTransaction.php',
	+ 'PhabricatorEditEngineEditOrderTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineEditOrderTransaction.php',
	'PhabricatorEditEngineExtension' => 'applications/transactions/engineextension/PhabricatorEditEngineExtension.php',
	'PhabricatorEditEngineExtensionModule' => 'applications/transactions/engineextension/PhabricatorEditEngineExtensionModule.php',
	+ 'PhabricatorEditEngineIsEditTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineIsEditTransaction.php',
	'PhabricatorEditEngineListController' => 'applications/transactions/controller/PhabricatorEditEngineListController.php',
	'PhabricatorEditEngineLock' => 'applications/transactions/editengine/PhabricatorEditEngineLock.php',
	'PhabricatorEditEngineLockableInterface' => 'applications/transactions/editengine/PhabricatorEditEngineLockableInterface.php',
	+ 'PhabricatorEditEngineLocksTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineLocksTransaction.php',
	'PhabricatorEditEngineMFAEngine' => 'applications/transactions/editengine/PhabricatorEditEngineMFAEngine.php',
	'PhabricatorEditEngineMFAInterface' => 'applications/transactions/editengine/PhabricatorEditEngineMFAInterface.php',
	+ 'PhabricatorEditEngineNameTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineNameTransaction.php',
	+ 'PhabricatorEditEngineOrderTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineOrderTransaction.php',
	'PhabricatorEditEnginePointsCommentAction' => 'applications/transactions/commentaction/PhabricatorEditEnginePointsCommentAction.php',
	+ 'PhabricatorEditEnginePreambleTransaction' => 'applications/transactions/xaction/PhabricatorEditEnginePreambleTransaction.php',
	'PhabricatorEditEngineProfileMenuItem' => 'applications/search/menuitem/PhabricatorEditEngineProfileMenuItem.php',
	'PhabricatorEditEngineQuery' => 'applications/transactions/query/PhabricatorEditEngineQuery.php',
	'PhabricatorEditEngineSearchEngine' => 'applications/transactions/query/PhabricatorEditEngineSearchEngine.php',
	@@ -3171,7 +3183,9 @@
	'PhabricatorEditEngineSubtypeInterface' => 'applications/transactions/editengine/PhabricatorEditEngineSubtypeInterface.php',
	'PhabricatorEditEngineSubtypeMap' => 'applications/transactions/editengine/PhabricatorEditEngineSubtypeMap.php',
	'PhabricatorEditEngineSubtypeTestCase' => 'applications/transactions/editengine/__tests__/PhabricatorEditEngineSubtypeTestCase.php',
	+ 'PhabricatorEditEngineSubtypeTransaction' => 'applications/transactions/xaction/PhabricatorEditEngineSubtypeTransaction.php',
	'PhabricatorEditEngineTokenizerCommentAction' => 'applications/transactions/commentaction/PhabricatorEditEngineTokenizerCommentAction.php',
	+ 'PhabricatorEditEngineTransactionType' => 'applications/transactions/xaction/PhabricatorEditEngineTransactionType.php',
	'PhabricatorEditField' => 'applications/transactions/editfield/PhabricatorEditField.php',
	'PhabricatorEditPage' => 'applications/transactions/editengine/PhabricatorEditPage.php',
	'PhabricatorEditType' => 'applications/transactions/edittype/PhabricatorEditType.php',
	@@ -8091,8 +8105,10 @@
	'PhabricatorApplicationTransactionCommentView' => 'AphrontView',
	'PhabricatorApplicationTransactionController' => 'PhabricatorController',
	'PhabricatorApplicationTransactionDetailController' => 'PhabricatorApplicationTransactionController',
	+ 'PhabricatorApplicationTransactionDetailView' => 'AphrontView',
	'PhabricatorApplicationTransactionEditor' => 'PhabricatorEditor',
	'PhabricatorApplicationTransactionFeedStory' => 'PhabricatorFeedStory',
	+ 'PhabricatorApplicationTransactionJSONDiffDetailView' => 'PhabricatorApplicationTransactionDetailView',
	'PhabricatorApplicationTransactionNoEffectException' => 'Exception',
	'PhabricatorApplicationTransactionNoEffectResponse' => 'AphrontProxyResponse',
	'PhabricatorApplicationTransactionPublishWorker' => 'PhabricatorWorker',
	@@ -8103,7 +8119,7 @@
	'PhabricatorApplicationTransactionShowOlderController' => 'PhabricatorApplicationTransactionController',
	'PhabricatorApplicationTransactionStructureException' => 'Exception',
	'PhabricatorApplicationTransactionTemplatedCommentQuery' => 'PhabricatorApplicationTransactionCommentQuery',
	- 'PhabricatorApplicationTransactionTextDiffDetailView' => 'AphrontView',
	+ 'PhabricatorApplicationTransactionTextDiffDetailView' => 'PhabricatorApplicationTransactionDetailView',
	'PhabricatorApplicationTransactionTransactionPHIDType' => 'PhabricatorPHIDType',
	'PhabricatorApplicationTransactionType' => 'PhabricatorModularTransactionType',
	'PhabricatorApplicationTransactionValidationError' => 'Phobject',
	@@ -9228,18 +9244,28 @@
	'PhabricatorEditEngineConfigurationSearchEngine' => 'PhabricatorApplicationSearchEngine',
	'PhabricatorEditEngineConfigurationSortController' => 'PhabricatorEditEngineController',
	'PhabricatorEditEngineConfigurationSubtypeController' => 'PhabricatorEditEngineController',
	- 'PhabricatorEditEngineConfigurationTransaction' => 'PhabricatorApplicationTransaction',
	+ 'PhabricatorEditEngineConfigurationTransaction' => 'PhabricatorModularTransaction',
	'PhabricatorEditEngineConfigurationTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
	'PhabricatorEditEngineConfigurationViewController' => 'PhabricatorEditEngineController',
	'PhabricatorEditEngineController' => 'PhabricatorApplicationTransactionController',
	+ 'PhabricatorEditEngineCreateOrderTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineDatasource' => 'PhabricatorTypeaheadDatasource',
	+ 'PhabricatorEditEngineDefaultCreateTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineDefaultLock' => 'PhabricatorEditEngineLock',
	+ 'PhabricatorEditEngineDefaultTransaction' => 'PhabricatorEditEngineTransactionType',
	+ 'PhabricatorEditEngineDisableTransaction' => 'PhabricatorEditEngineTransactionType',
	+ 'PhabricatorEditEngineEditOrderTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineExtension' => 'Phobject',
	'PhabricatorEditEngineExtensionModule' => 'PhabricatorConfigModule',
	+ 'PhabricatorEditEngineIsEditTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineListController' => 'PhabricatorEditEngineController',
	'PhabricatorEditEngineLock' => 'Phobject',
	+ 'PhabricatorEditEngineLocksTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineMFAEngine' => 'Phobject',
	+ 'PhabricatorEditEngineNameTransaction' => 'PhabricatorEditEngineTransactionType',
	+ 'PhabricatorEditEngineOrderTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEnginePointsCommentAction' => 'PhabricatorEditEngineCommentAction',
	+ 'PhabricatorEditEnginePreambleTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineProfileMenuItem' => 'PhabricatorProfileMenuItem',
	'PhabricatorEditEngineQuery' => 'PhabricatorCursorPagedPolicyAwareQuery',
	'PhabricatorEditEngineSearchEngine' => 'PhabricatorApplicationSearchEngine',
	@@ -9249,7 +9275,9 @@
	'PhabricatorEditEngineSubtype' => 'Phobject',
	'PhabricatorEditEngineSubtypeMap' => 'Phobject',
	'PhabricatorEditEngineSubtypeTestCase' => 'PhabricatorTestCase',
	+ 'PhabricatorEditEngineSubtypeTransaction' => 'PhabricatorEditEngineTransactionType',
	'PhabricatorEditEngineTokenizerCommentAction' => 'PhabricatorEditEngineCommentAction',
	+ 'PhabricatorEditEngineTransactionType' => 'PhabricatorModularTransactionType',
	'PhabricatorEditField' => 'Phobject',
	'PhabricatorEditPage' => 'Phobject',
	'PhabricatorEditType' => 'Phobject',
	diff --git a/src/applications/herald/xaction/HeraldRuleEditTransaction.php b/src/applications/herald/xaction/HeraldRuleEditTransaction.php
	--- a/src/applications/herald/xaction/HeraldRuleEditTransaction.php
	+++ b/src/applications/herald/xaction/HeraldRuleEditTransaction.php
	@@ -40,17 +40,10 @@
	public function newChangeDetailView() {
	$viewer = $this->getViewer();

	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	- $json = new PhutilJSON();
	- $old_json = $json->encodeFormatted($old);
	- $new_json = $json->encodeFormatted($new);
	-
	- return id(new PhabricatorApplicationTransactionTextDiffDetailView())
	+ return id(new PhabricatorApplicationTransactionJSONDiffDetailView())
	->setViewer($viewer)
	- ->setOldText($old_json)
	- ->setNewText($new_json);
	+ ->setOld($this->getOldValue())
	+ ->setNew($this->getNewValue());
	}

	}
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultCreateController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultCreateController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultCreateController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultCreateController.php
	@@ -15,7 +15,7 @@
	$key = $config->getIdentifier();
	$cancel_uri = "/transactions/editengine/{$engine_key}/view/{$key}/";

	- $type = PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE;
	+ $type = PhabricatorEditEngineDefaultCreateTransaction::TRANSACTIONTYPE;

	if ($request->isFormPost()) {
	$xactions = array();
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultsController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultsController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultsController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDefaultsController.php
	@@ -52,7 +52,7 @@
	$field->readValueFromSubmit($request);
	}

	- $type = PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT;
	+ $type = PhabricatorEditEngineDefaultTransaction::TRANSACTIONTYPE;

	$xactions = array();
	foreach ($fields as $field) {
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDisableController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDisableController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDisableController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationDisableController.php
	@@ -15,7 +15,7 @@
	$key = $config->getIdentifier();
	$cancel_uri = "/transactions/editengine/{$engine_key}/view/{$key}/";

	- $type = PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE;
	+ $type = PhabricatorEditEngineDisableTransaction::TRANSACTIONTYPE;

	if ($request->isFormPost()) {
	$xactions = array();
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationIsEditController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationIsEditController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationIsEditController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationIsEditController.php
	@@ -15,8 +15,7 @@
	$key = $config->getIdentifier();
	$cancel_uri = "/transactions/editengine/{$engine_key}/view/{$key}/";

	- $type = PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT;
	-
	+ $type = PhabricatorEditEngineIsEditTransaction::TRANSACTIONTYPE;
	if ($request->isFormPost()) {
	$xactions = array();

	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationLockController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationLockController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationLockController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationLockController.php
	@@ -30,8 +30,7 @@
	$xactions = array();

	$locks = $request->getArr('locks');
	- $type_locks = PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS;
	-
	+ $type_locks = PhabricatorEditEngineLocksTransaction::TRANSACTIONTYPE;
	$xactions[] = id(new PhabricatorEditEngineConfigurationTransaction())
	->setTransactionType($type_locks)
	->setNewValue($locks);
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationReorderController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationReorderController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationReorderController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationReorderController.php
	@@ -31,8 +31,7 @@
	$xactions = array();
	$key_order = $request->getStrList('keyOrder');

	- $type_order = PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER;
	-
	+ $type_order = PhabricatorEditEngineOrderTransaction::TRANSACTIONTYPE;
	$xactions[] = id(new PhabricatorEditEngineConfigurationTransaction())
	->setTransactionType($type_order)
	->setNewValue($key_order);
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSortController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSortController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSortController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSortController.php
	@@ -70,10 +70,10 @@

	if ($is_create) {
	$xaction_type =
	- PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER;
	+ PhabricatorEditEngineCreateOrderTransaction::TRANSACTIONTYPE;
	} else {
	$xaction_type =
	- PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER;
	+ PhabricatorEditEngineEditOrderTransaction::TRANSACTIONTYPE;
	}

	$xactions[] = id(new PhabricatorEditEngineConfigurationTransaction())
	diff --git a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSubtypeController.php b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSubtypeController.php
	--- a/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSubtypeController.php
	+++ b/src/applications/transactions/controller/PhabricatorEditEngineConfigurationSubtypeController.php
	@@ -35,9 +35,7 @@
	$xactions = array();

	$subtype = $request->getStr('subtype');
	- $type_subtype =
	- PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE;
	-
	+ $type_subtype = PhabricatorEditEngineSubtypeTransaction::TRANSACTIONTYPE;
	$xactions[] = id(new PhabricatorEditEngineConfigurationTransaction())
	->setTransactionType($type_subtype)
	->setNewValue($subtype);
	diff --git a/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditEngine.php b/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditEngine.php
	--- a/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditEngine.php
	+++ b/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditEngine.php
	@@ -99,14 +99,14 @@
	->setLabel(pht('Name'))
	->setDescription(pht('Name of the form.'))
	->setTransactionType(
	- PhabricatorEditEngineConfigurationTransaction::TYPE_NAME)
	+ PhabricatorEditEngineNameTransaction::TRANSACTIONTYPE)
	->setValue($object->getName()),
	id(new PhabricatorRemarkupEditField())
	->setKey('preamble')
	->setLabel(pht('Preamble'))
	->setDescription(pht('Optional instructions, shown above the form.'))
	->setTransactionType(
	- PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE)
	+ PhabricatorEditEnginePreambleTransaction::TRANSACTIONTYPE)
	->setValue($object->getPreamble()),
	);
	}
	diff --git a/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditor.php b/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditor.php
	--- a/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditor.php
	+++ b/src/applications/transactions/editor/PhabricatorEditEngineConfigurationEditor.php
	@@ -13,191 +13,9 @@

	public function getTransactionTypes() {
	$types = parent::getTransactionTypes();
	-
	$types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;

	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_NAME;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE;
	- $types[] =
	- PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE;
	-
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER;
	- $types[] = PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER;
	-
	return $types;
	}

	- protected function validateTransaction(
	- PhabricatorLiskDAO $object,
	- $type,
	- array $xactions) {
	-
	- $errors = parent::validateTransaction($object, $type, $xactions);
	- switch ($type) {
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_NAME:
	- $missing = $this->validateIsEmptyTextField(
	- $object->getName(),
	- $xactions);
	-
	- if ($missing) {
	- $error = new PhabricatorApplicationTransactionValidationError(
	- $type,
	- pht('Required'),
	- pht('Form name is required.'),
	- nonempty(last($xactions), null));
	-
	- $error->setIsMissingFieldError(true);
	- $errors[] = $error;
	- }
	- break;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE:
	- if ($xactions) {
	- $map = $object->getEngine()
	- ->setViewer($this->getActor())
	- ->newSubtypeMap();
	- foreach ($xactions as $xaction) {
	- $new = $xaction->getNewValue();
	-
	- if ($map->isValidSubtype($new)) {
	- continue;
	- }
	-
	- $errors[] = new PhabricatorApplicationTransactionValidationError(
	- $type,
	- pht('Invalid'),
	- pht('Subtype "%s" is not a valid subtype.', $new),
	- $xaction);
	- }
	- }
	- break;
	- }
	-
	- return $errors;
	- }
	-
	- protected function getCustomTransactionOldValue(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_NAME:
	- return $object->getName();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE;
	- return $object->getPreamble();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER:
	- return $object->getFieldOrder();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT:
	- $field_key = $xaction->getMetadataValue('field.key');
	- return $object->getFieldDefault($field_key);
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS:
	- return $object->getFieldLocks();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE:
	- return $object->getSubtype();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE:
	- return (int)$object->getIsDefault();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT:
	- return (int)$object->getIsEdit();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE:
	- return (int)$object->getIsDisabled();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER:
	- return (int)$object->getCreateOrder();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER:
	- return (int)$object->getEditOrder();
	-
	- }
	- }
	-
	- protected function getCustomTransactionNewValue(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_NAME:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE:
	- return $xaction->getNewValue();
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER:
	- return (int)$xaction->getNewValue();
	- }
	- }
	-
	- protected function applyCustomInternalTransaction(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_NAME:
	- $object->setName($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE;
	- $object->setPreamble($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER:
	- $object->setFieldOrder($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT:
	- $field_key = $xaction->getMetadataValue('field.key');
	- $object->setFieldDefault($field_key, $xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS:
	- $object->setFieldLocks($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE:
	- $object->setSubtype($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE:
	- $object->setIsDefault($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT:
	- $object->setIsEdit($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE:
	- $object->setIsDisabled($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER:
	- $object->setCreateOrder($xaction->getNewValue());
	- return;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER:
	- $object->setEditOrder($xaction->getNewValue());
	- return;
	- }
	-
	- return parent::applyCustomInternalTransaction($object, $xaction);
	- }
	-
	- protected function applyCustomExternalTransaction(
	- PhabricatorLiskDAO $object,
	- PhabricatorApplicationTransaction $xaction) {
	-
	- switch ($xaction->getTransactionType()) {
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_NAME:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_PREAMBLE;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ORDER;
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULT:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_ISEDIT:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_LOCKS:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_SUBTYPE:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DEFAULTCREATE:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_DISABLE:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_CREATEORDER:
	- case PhabricatorEditEngineConfigurationTransaction::TYPE_EDITORDER:
	- return;
	- }
	-
	- return parent::applyCustomExternalTransaction($object, $xaction);
	- }
	-
	}
	diff --git a/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php b/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
	--- a/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
	+++ b/src/applications/transactions/storage/PhabricatorEditEngineConfigurationTransaction.php
	@@ -1,19 +1,7 @@
	<?php

	final class PhabricatorEditEngineConfigurationTransaction
	- extends PhabricatorApplicationTransaction {
	-
	- const TYPE_NAME = 'editengine.config.name';
	- const TYPE_PREAMBLE = 'editengine.config.preamble';
	- const TYPE_ORDER = 'editengine.config.order';
	- const TYPE_DEFAULT = 'editengine.config.default';
	- const TYPE_LOCKS = 'editengine.config.locks';
	- const TYPE_DEFAULTCREATE = 'editengine.config.default.create';
	- const TYPE_ISEDIT = 'editengine.config.isedit';
	- const TYPE_DISABLE = 'editengine.config.disable';
	- const TYPE_CREATEORDER = 'editengine.order.create';
	- const TYPE_EDITORDER = 'editengine.order.edit';
	- const TYPE_SUBTYPE = 'editengine.config.subtype';
	+ extends PhabricatorModularTransaction {

	public function getApplicationName() {
	return 'search';
	@@ -23,203 +11,8 @@
	return PhabricatorEditEngineConfigurationPHIDType::TYPECONST;
	}

	- public function getTitle() {
	- $author_phid = $this->getAuthorPHID();
	-
	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	- $type = $this->getTransactionType();
	- switch ($type) {
	- case PhabricatorTransactions::TYPE_CREATE:
	- return pht(
	- '%s created this form configuration.',
	- $this->renderHandleLink($author_phid));
	- case self::TYPE_NAME:
	- if (strlen($old)) {
	- return pht(
	- '%s renamed this form from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old,
	- $new);
	- } else {
	- return pht(
	- '%s named this form "%s".',
	- $this->renderHandleLink($author_phid),
	- $new);
	- }
	- case self::TYPE_PREAMBLE:
	- return pht(
	- '%s updated the preamble for this form.',
	- $this->renderHandleLink($author_phid));
	- case self::TYPE_ORDER:
	- return pht(
	- '%s reordered the fields in this form.',
	- $this->renderHandleLink($author_phid));
	- case self::TYPE_DEFAULT:
	- $key = $this->getMetadataValue('field.key');
	-
	- $object = $this->getObject();
	- $engine = $object->getEngine();
	- $fields = $engine->getFieldsForConfig($object);
	-
	- $field = idx($fields, $key);
	- if (!$field) {
	- return pht(
	- '%s changed the default value for field "%s".',
	- $this->renderHandleLink($author_phid),
	- $key);
	- }
	-
	- return pht(
	- '%s changed the default value for field "%s".',
	- $this->renderHandleLink($author_phid),
	- $field->getLabel());
	- case self::TYPE_LOCKS:
	- return pht(
	- '%s changed locked and hidden fields.',
	- $this->renderHandleLink($author_phid));
	- case self::TYPE_DEFAULTCREATE:
	- if ($new) {
	- return pht(
	- '%s added this form to the "Create" menu.',
	- $this->renderHandleLink($author_phid));
	- } else {
	- return pht(
	- '%s removed this form from the "Create" menu.',
	- $this->renderHandleLink($author_phid));
	- }
	- case self::TYPE_ISEDIT:
	- if ($new) {
	- return pht(
	- '%s marked this form as an edit form.',
	- $this->renderHandleLink($author_phid));
	- } else {
	- return pht(
	- '%s unmarked this form as an edit form.',
	- $this->renderHandleLink($author_phid));
	- }
	- case self::TYPE_DISABLE:
	- if ($new) {
	- return pht(
	- '%s disabled this form.',
	- $this->renderHandleLink($author_phid));
	- } else {
	- return pht(
	- '%s enabled this form.',
	- $this->renderHandleLink($author_phid));
	- }
	- case self::TYPE_SUBTYPE:
	- return pht(
	- '%s changed the subtype of this form from "%s" to "%s".',
	- $this->renderHandleLink($author_phid),
	- $old,
	- $new);
	- }
	-
	- return parent::getTitle();
	- }
	-
	- public function getColor() {
	- $author_phid = $this->getAuthorPHID();
	-
	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	- $type = $this->getTransactionType();
	- switch ($type) {
	- case PhabricatorTransactions::TYPE_CREATE:
	- return 'green';
	- case self::TYPE_DISABLE:
	- if ($new) {
	- return 'indigo';
	- } else {
	- return 'green';
	- }
	- }
	-
	- return parent::getColor();
	- }
	-
	- public function getIcon() {
	- $author_phid = $this->getAuthorPHID();
	-
	- $old = $this->getOldValue();
	- $new = $this->getNewValue();
	-
	- $type = $this->getTransactionType();
	- switch ($type) {
	- case PhabricatorTransactions::TYPE_CREATE:
	- return 'fa-plus';
	- case self::TYPE_DISABLE:
	- if ($new) {
	- return 'fa-ban';
	- } else {
	- return 'fa-check';
	- }
	- }
	-
	- return parent::getIcon();
	- }
	-
	- protected function newRemarkupChanges() {
	- $changes = array();
	-
	- $type = $this->getTransactionType();
	- switch ($type) {
	- case self::TYPE_PREAMBLE:
	- $changes[] = $this->newRemarkupChange()
	- ->setOldValue($this->getOldValue())
	- ->setNewValue($this->getNewValue());
	- break;
	- }
	-
	- return $changes;
	- }
	-
	- public function hasChangeDetails() {
	- switch ($this->getTransactionType()) {
	- case self::TYPE_DEFAULT:
	- return true;
	- }
	-
	- return parent::hasChangeDetails();
	- }
	-
	- public function renderChangeDetails(PhabricatorUser $viewer) {
	- switch ($this->getTransactionType()) {
	- case self::TYPE_DEFAULT:
	- $old_value = $this->getOldValue();
	- $new_value = $this->getNewValue();
	-
	- $old_value = $this->renderDefaultValueAsFallbackText($old_value);
	- $new_value = $this->renderDefaultValueAsFallbackText($new_value);
	-
	- return $this->renderTextCorpusChangeDetails(
	- $viewer,
	- $old_value,
	- $new_value);
	- }
	-
	- return parent::renderChangeDetails($viewer);
	- }
	-
	- private function renderDefaultValueAsFallbackText($default_value) {
	- // See T13319. When rendering an "alice changed the default value for
	- // field X." story on custom forms, we may fall back to a generic
	- // rendering. Try to present the value change in a comprehensible way
	- // even if it isn't especially human readable (for example, it may
	- // contain PHIDs or other internal identifiers).
	-
	- if (is_scalar($default_value) \|\| is_null($default_value)) {
	- return $default_value;
	- }
	-
	- if (phutil_is_natural_list($default_value)) {
	- return id(new PhutilJSON())->encodeAsList($default_value);
	- }
	-
	- return id(new PhutilJSON())->encodeAsObject($default_value);
	+ public function getBaseTransactionClass() {
	+ return 'PhabricatorEditEngineTransactionType';
	}

	}
	diff --git a/src/applications/transactions/view/PhabricatorApplicationTransactionDetailView.php b/src/applications/transactions/view/PhabricatorApplicationTransactionDetailView.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/view/PhabricatorApplicationTransactionDetailView.php
	@@ -0,0 +1,172 @@
	+<?php
	+
	+abstract class PhabricatorApplicationTransactionDetailView
	+ extends AphrontView {
	+ protected $oldText;
	+ protected $newText;
	+
	+ public function setNewText($new_text) {
	+ $this->newText = $new_text;
	+ return $this;
	+ }
	+
	+ public function setOldText($old_text) {
	+ $this->oldText = $old_text;
	+ return $this;
	+ }
	+
	+ public function renderForMail() {
	+ $diff = $this->buildDiff();
	+
	+ $viewer = $this->getViewer();
	+ $old_bright = $viewer->getCSSValue('old-bright');
	+ $new_bright = $viewer->getCSSValue('new-bright');
	+
	+ $old_styles = array(
	+ 'padding: 0 2px;',
	+ 'color: #333333;',
	+ "background: {$old_bright};",
	+ );
	+ $old_styles = implode(' ', $old_styles);
	+
	+ $new_styles = array(
	+ 'padding: 0 2px;',
	+ 'color: #333333;',
	+ "background: {$new_bright};",
	+ );
	+ $new_styles = implode(' ', $new_styles);
	+
	+ $omit_styles = array(
	+ 'padding: 8px 0;',
	+ );
	+ $omit_styles = implode(' ', $omit_styles);
	+
	+ $result = array();
	+ foreach ($diff->getSummaryParts() as $part) {
	+ $type = $part['type'];
	+ $text = $part['text'];
	+ switch ($type) {
	+ case '.':
	+ $result[] = phutil_tag(
	+ 'div',
	+ array(
	+ 'style' => $omit_styles,
	+ ),
	+ pht('...'));
	+ break;
	+ case '-':
	+ $result[] = phutil_tag(
	+ 'span',
	+ array(
	+ 'style' => $old_styles,
	+ ),
	+ $text);
	+ break;
	+ case '+':
	+ $result[] = phutil_tag(
	+ 'span',
	+ array(
	+ 'style' => $new_styles,
	+ ),
	+ $text);
	+ break;
	+ case '=':
	+ $result[] = $text;
	+ break;
	+ }
	+ }
	+
	+ $styles = array(
	+ 'white-space: pre-wrap;',
	+ 'color: #74777D;',
	+ );
	+
	+ // Beyond applying "pre-wrap", convert newlines to "<br />" explicitly
	+ // to improve behavior in clients like Airmail.
	+ $result = phutil_escape_html_newlines($result);
	+
	+ return phutil_tag(
	+ 'div',
	+ array(
	+ 'style' => implode(' ', $styles),
	+ ),
	+ $result);
	+ }
	+
	+ public function render() {
	+ $diff = $this->buildDiff();
	+
	+ require_celerity_resource('differential-changeset-view-css');
	+
	+ $result = array();
	+ foreach ($diff->getParts() as $part) {
	+ $type = $part['type'];
	+ $text = $part['text'];
	+ switch ($type) {
	+ case '-':
	+ $result[] = phutil_tag(
	+ 'span',
	+ array(
	+ 'class' => 'old',
	+ ),
	+ $text);
	+ break;
	+ case '+':
	+ $result[] = phutil_tag(
	+ 'span',
	+ array(
	+ 'class' => 'new',
	+ ),
	+ $text);
	+ break;
	+ case '=':
	+ $result[] = $text;
	+ break;
	+ }
	+ }
	+
	+ $diff_view = phutil_tag(
	+ 'div',
	+ array(
	+ 'class' => 'prose-diff',
	+ ),
	+ $result);
	+
	+ $old_view = phutil_tag(
	+ 'div',
	+ array(
	+ 'class' => 'prose-diff',
	+ ),
	+ $this->oldText);
	+
	+ $new_view = phutil_tag(
	+ 'div',
	+ array(
	+ 'class' => 'prose-diff',
	+ ),
	+ $this->newText);
	+
	+ return id(new PHUITabGroupView())
	+ ->addTab(
	+ id(new PHUITabView())
	+ ->setKey('old')
	+ ->setName(pht('Old'))
	+ ->appendChild($old_view))
	+ ->addTab(
	+ id(new PHUITabView())
	+ ->setKey('new')
	+ ->setName(pht('New'))
	+ ->appendChild($new_view))
	+ ->addTab(
	+ id(new PHUITabView())
	+ ->setKey('diff')
	+ ->setName(pht('Diff'))
	+ ->appendChild($diff_view))
	+ ->selectTab('diff');
	+ }
	+
	+ private function buildDiff() {
	+ $engine = new PhutilProseDifferenceEngine();
	+ return $engine->getDiff($this->oldText, $this->newText);
	+ }
	+}
	diff --git a/src/applications/transactions/view/PhabricatorApplicationTransactionJSONDiffDetailView.php b/src/applications/transactions/view/PhabricatorApplicationTransactionJSONDiffDetailView.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/view/PhabricatorApplicationTransactionJSONDiffDetailView.php
	@@ -0,0 +1,17 @@
	+<?php
	+
	+final class PhabricatorApplicationTransactionJSONDiffDetailView
	+ extends PhabricatorApplicationTransactionDetailView {
	+
	+ public function setNew($new_object) {
	+ $json = new PhutilJSON();
	+ $this->setNewText($json->encodeFormatted($new_object));
	+ return $this;
	+ }
	+
	+ public function setOld($old_object) {
	+ $json = new PhutilJSON();
	+ $this->setOldText($json->encodeFormatted($old_object));
	+ return $this;
	+ }
	+}
	diff --git a/src/applications/transactions/view/PhabricatorApplicationTransactionTextDiffDetailView.php b/src/applications/transactions/view/PhabricatorApplicationTransactionTextDiffDetailView.php
	--- a/src/applications/transactions/view/PhabricatorApplicationTransactionTextDiffDetailView.php
	+++ b/src/applications/transactions/view/PhabricatorApplicationTransactionTextDiffDetailView.php
	@@ -1,174 +1,4 @@
	<?php

	final class PhabricatorApplicationTransactionTextDiffDetailView
	- extends AphrontView {
	-
	- private $oldText;
	- private $newText;
	-
	- public function setNewText($new_text) {
	- $this->newText = $new_text;
	- return $this;
	- }
	-
	- public function setOldText($old_text) {
	- $this->oldText = $old_text;
	- return $this;
	- }
	-
	- public function renderForMail() {
	- $diff = $this->buildDiff();
	-
	- $viewer = $this->getViewer();
	- $old_bright = $viewer->getCSSValue('old-bright');
	- $new_bright = $viewer->getCSSValue('new-bright');
	-
	- $old_styles = array(
	- 'padding: 0 2px;',
	- 'color: #333333;',
	- "background: {$old_bright};",
	- );
	- $old_styles = implode(' ', $old_styles);
	-
	- $new_styles = array(
	- 'padding: 0 2px;',
	- 'color: #333333;',
	- "background: {$new_bright};",
	- );
	- $new_styles = implode(' ', $new_styles);
	-
	- $omit_styles = array(
	- 'padding: 8px 0;',
	- );
	- $omit_styles = implode(' ', $omit_styles);
	-
	- $result = array();
	- foreach ($diff->getSummaryParts() as $part) {
	- $type = $part['type'];
	- $text = $part['text'];
	- switch ($type) {
	- case '.':
	- $result[] = phutil_tag(
	- 'div',
	- array(
	- 'style' => $omit_styles,
	- ),
	- pht('...'));
	- break;
	- case '-':
	- $result[] = phutil_tag(
	- 'span',
	- array(
	- 'style' => $old_styles,
	- ),
	- $text);
	- break;
	- case '+':
	- $result[] = phutil_tag(
	- 'span',
	- array(
	- 'style' => $new_styles,
	- ),
	- $text);
	- break;
	- case '=':
	- $result[] = $text;
	- break;
	- }
	- }
	-
	- $styles = array(
	- 'white-space: pre-wrap;',
	- 'color: #74777D;',
	- );
	-
	- // Beyond applying "pre-wrap", convert newlines to "<br />" explicitly
	- // to improve behavior in clients like Airmail.
	- $result = phutil_escape_html_newlines($result);
	-
	- return phutil_tag(
	- 'div',
	- array(
	- 'style' => implode(' ', $styles),
	- ),
	- $result);
	- }
	-
	- public function render() {
	- $diff = $this->buildDiff();
	-
	- require_celerity_resource('differential-changeset-view-css');
	-
	- $result = array();
	- foreach ($diff->getParts() as $part) {
	- $type = $part['type'];
	- $text = $part['text'];
	- switch ($type) {
	- case '-':
	- $result[] = phutil_tag(
	- 'span',
	- array(
	- 'class' => 'old',
	- ),
	- $text);
	- break;
	- case '+':
	- $result[] = phutil_tag(
	- 'span',
	- array(
	- 'class' => 'new',
	- ),
	- $text);
	- break;
	- case '=':
	- $result[] = $text;
	- break;
	- }
	- }
	-
	- $diff_view = phutil_tag(
	- 'div',
	- array(
	- 'class' => 'prose-diff',
	- ),
	- $result);
	-
	- $old_view = phutil_tag(
	- 'div',
	- array(
	- 'class' => 'prose-diff',
	- ),
	- $this->oldText);
	-
	- $new_view = phutil_tag(
	- 'div',
	- array(
	- 'class' => 'prose-diff',
	- ),
	- $this->newText);
	-
	- return id(new PHUITabGroupView())
	- ->addTab(
	- id(new PHUITabView())
	- ->setKey('old')
	- ->setName(pht('Old'))
	- ->appendChild($old_view))
	- ->addTab(
	- id(new PHUITabView())
	- ->setKey('new')
	- ->setName(pht('New'))
	- ->appendChild($new_view))
	- ->addTab(
	- id(new PHUITabView())
	- ->setKey('diff')
	- ->setName(pht('Diff'))
	- ->appendChild($diff_view))
	- ->selectTab('diff');
	- }
	-
	- private function buildDiff() {
	- $engine = new PhutilProseDifferenceEngine();
	- return $engine->getDiff($this->oldText, $this->newText);
	- }
	-
	-}
	+ extends PhabricatorApplicationTransactionDetailView {}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineCreateOrderTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineCreateOrderTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineCreateOrderTransaction.php
	@@ -0,0 +1,26 @@
	+<?php
	+
	+final class PhabricatorEditEngineCreateOrderTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.order.create';
	+
	+ public function generateOldValue($object) {
	+ return (int)$object->getCreateOrder();
	+ }
	+
	+ public function generateNewValue($object, $value) {
	+ return (int)$value;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setCreateOrder($value);
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s changed the order in which this form appears in the "Create" menu.',
	+ $this->renderAuthor());
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineDefaultCreateTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineDefaultCreateTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineDefaultCreateTransaction.php
	@@ -0,0 +1,35 @@
	+<?php
	+
	+final class PhabricatorEditEngineDefaultCreateTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.default.create';
	+
	+ public function generateOldValue($object) {
	+ return (int)$object->getIsDefault();
	+ }
	+
	+ public function generateNewValue($object, $value) {
	+ return (int)$value;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setIsDefault($value);
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ if ($new) {
	+ return pht(
	+ '%s added this form to the "Create" menu.',
	+ $this->renderAuthor());
	+ } else {
	+ return pht(
	+ '%s removed this form from the "Create" menu.',
	+ $this->renderAuthor());
	+ }
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineDefaultTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineDefaultTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineDefaultTransaction.php
	@@ -0,0 +1,71 @@
	+<?php
	+
	+final class PhabricatorEditEngineDefaultTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.default';
	+
	+ public function generateOldValue($object) {
	+ $field_key = $this->getMetadataValue('field.key');
	+ return $object->getFieldDefault($field_key);
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $field_key = $this->getMetadataValue('field.key');
	+ $object->setFieldDefault($field_key, $value);
	+ }
	+
	+ public function getTitle() {
	+ $key = $this->getMetadataValue('field.key');
	+ $object = $this->getObject();
	+ $engine = $object->getEngine();
	+ $fields = $engine->getFieldsForConfig($object);
	+ $field = idx($fields, $key);
	+
	+ if (!$field) {
	+ return pht(
	+ '%s changed the default values for field %s.',
	+ $this->renderAuthor(),
	+ $this->renderValue($key));
	+ }
	+
	+ return pht(
	+ '%s changed the default value for field %s.',
	+ $this->renderAuthor(),
	+ $this->renderValue($field->getLabel()));
	+ }
	+
	+ public function hasChangeDetailView() {
	+ return true;
	+ }
	+
	+ public function newChangeDetailView() {
	+ $viewer = $this->getViewer();
	+ $old = $this->renderDefaultValueAsFallbackText($this->getOldValue());
	+ $new = $this->renderDefaultValueAsFallbackText($this->getNewValue());
	+
	+ return id(new PhabricatorApplicationTransactionTextDiffDetailView())
	+ ->setViewer($viewer)
	+ ->setOldText($old)
	+ ->setNewText($new);
	+ }
	+
	+ private function renderDefaultValueAsFallbackText($default_value) {
	+ // See T13319. When rendering an "alice changed the default value for
	+ // field X." story on custom forms, we may fall back to a generic
	+ // rendering. Try to present the value change in a comprehensible way
	+ // even if it isn't especially human readable (for example, it may
	+ // contain PHIDs or other internal identifiers).
	+
	+ if (is_scalar($default_value) \|\| is_null($default_value)) {
	+ return $default_value;
	+ }
	+
	+ if (phutil_is_natural_list($default_value)) {
	+ return id(new PhutilJSON())->encodeAsList($default_value);
	+ }
	+
	+ return id(new PhutilJSON())->encodeAsObject($default_value);
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineDisableTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineDisableTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineDisableTransaction.php
	@@ -0,0 +1,51 @@
	+<?php
	+
	+final class PhabricatorEditEngineDisableTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.disable';
	+
	+ public function generateOldValue($object) {
	+ return (int)$object->getIsDisabled();
	+ }
	+
	+ public function generateNewValue($object, $value) {
	+ return (int)$value;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setIsDisabled($value);
	+ }
	+
	+ public function getTitle() {
	+ $new = $this->getNewValue();
	+ if ($new) {
	+ return pht(
	+ '%s disabled this form.',
	+ $this->renderAuthor());
	+ } else {
	+ return pht(
	+ '%s enabled this form.',
	+ $this->renderAuthor());
	+ }
	+ }
	+
	+ public function getColor() {
	+ $new = $this->getNewValue();
	+ if ($new) {
	+ return 'indigo';
	+ } else {
	+ return 'green';
	+ }
	+ }
	+
	+ public function getIcon() {
	+ $new = $this->getNewValue();
	+ if ($new) {
	+ return 'fa-ban';
	+ } else {
	+ return 'fa-check';
	+ }
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineEditOrderTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineEditOrderTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineEditOrderTransaction.php
	@@ -0,0 +1,26 @@
	+<?php
	+
	+final class PhabricatorEditEngineEditOrderTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.order.edit';
	+
	+ public function generateOldValue($object) {
	+ return (int)$object->getEditOrder();
	+ }
	+
	+ public function generateNewValue($object, $value) {
	+ return (int)$value;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setEditOrder($value);
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s changed the order in which this form appears in the "Edit" menu.',
	+ $this->renderAuthor());
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineIsEditTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineIsEditTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineIsEditTransaction.php
	@@ -0,0 +1,34 @@
	+<?php
	+
	+final class PhabricatorEditEngineIsEditTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.isedit';
	+
	+ public function generateOldValue($object) {
	+ return (int)$object->getIsEdit();
	+ }
	+
	+ public function generateNewValue($object, $value) {
	+ return (int)$value;
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setIsEdit($value);
	+ }
	+
	+ public function getTitle() {
	+ $new = $this->getNewValue();
	+
	+ if ($new) {
	+ return pht(
	+ '%s marked this form as an edit form.',
	+ $this->renderAuthor());
	+ } else {
	+ return pht(
	+ '%s unmarked this form as an edit form.',
	+ $this->renderAuthor());
	+ }
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineLocksTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineLocksTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineLocksTransaction.php
	@@ -0,0 +1,35 @@
	+<?php
	+
	+final class PhabricatorEditEngineLocksTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.locks';
	+
	+ public function generateOldValue($object) {
	+ return $object->getFieldLocks();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setFieldLocks($value);
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s changed locked and hidden fields.',
	+ $this->renderAuthor());
	+ }
	+
	+ public function hasChangeDetailView() {
	+ return true;
	+ }
	+
	+ public function newChangeDetailView() {
	+ $viewer = $this->getViewer();
	+
	+ return id(new PhabricatorApplicationTransactionJSONDiffDetailView())
	+ ->setViewer($viewer)
	+ ->setOld($this->getOldValue())
	+ ->setNew($this->getNewValue());
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineNameTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineNameTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineNameTransaction.php
	@@ -0,0 +1,54 @@
	+<?php
	+
	+final class PhabricatorEditEngineNameTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.name';
	+
	+ public function generateOldValue($object) {
	+ return $object->getName();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setName($value);
	+ }
	+
	+ public function getTitle() {
	+ if (strlen($this->getOldValue())) {
	+ return pht(
	+ '%s renamed this form from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderOldValue(),
	+ $this->renderNewValue());
	+ } else {
	+ return pht(
	+ '%s named this form %s.',
	+ $this->renderAuthor(),
	+ $this->renderNewValue());
	+ }
	+ }
	+
	+ public function validateTransactions($object, array $xactions) {
	+ $errors = array();
	+
	+ foreach ($xactions as $xaction) {
	+ $new = $xaction->getNewValue();
	+ if (!strlen($new)) {
	+ $errors[] = $this->newRequiredError(
	+ pht('Form name is required.'),
	+ $xaction);
	+ continue;
	+ }
	+ }
	+
	+ if (!$errors) {
	+ if ($this->isEmptyTextTransaction($object->getName(), $xactions)) {
	+ $errors[] = $this->newRequiredError(
	+ pht('Forms must have a name.'));
	+ }
	+ }
	+
	+ return $errors;
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineOrderTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineOrderTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineOrderTransaction.php
	@@ -0,0 +1,35 @@
	+<?php
	+
	+final class PhabricatorEditEngineOrderTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.order';
	+
	+ public function generateOldValue($object) {
	+ return $object->getFieldOrder();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setFieldOrder($value);
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s reordered the fields in this form.',
	+ $this->renderAuthor());
	+ }
	+
	+ public function hasChangeDetailView() {
	+ return true;
	+ }
	+
	+ public function newChangeDetailView() {
	+ $viewer = $this->getViewer();
	+
	+ return id(new PhabricatorApplicationTransactionJSONDiffDetailView())
	+ ->setViewer($viewer)
	+ ->setOld($this->getOldValue())
	+ ->setNew($this->getNewValue());
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEnginePreambleTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEnginePreambleTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEnginePreambleTransaction.php
	@@ -0,0 +1,45 @@
	+<?php
	+
	+final class PhabricatorEditEnginePreambleTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.preamble';
	+
	+ public function generateOldValue($object) {
	+ return $object->getPreamble();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setPreamble($value);
	+ }
	+
	+ public function getTitle() {
	+ return pht(
	+ '%s updated the preamble for this form.',
	+ $this->renderAuthor());
	+ }
	+
	+ public function hasChangeDetailView() {
	+ return true;
	+ }
	+
	+ 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 $changes;
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineSubtypeTransaction.php b/src/applications/transactions/xaction/PhabricatorEditEngineSubtypeTransaction.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineSubtypeTransaction.php
	@@ -0,0 +1,48 @@
	+<?php
	+
	+final class PhabricatorEditEngineSubtypeTransaction
	+ extends PhabricatorEditEngineTransactionType {
	+
	+ const TRANSACTIONTYPE = 'editengine.config.subtype';
	+
	+ public function generateOldValue($object) {
	+ return $object->getSubtype();
	+ }
	+
	+ public function applyInternalEffects($object, $value) {
	+ $object->setSubtype($value);
	+ }
	+
	+ public function getTitle() {
	+ $old = $this->getOldValue();
	+ $new = $this->getNewValue();
	+
	+ return pht(
	+ '%s changed the subtype of this form from %s to %s.',
	+ $this->renderAuthor(),
	+ $this->renderOldValue(),
	+ $this->renderNewValue());
	+ }
	+
	+ public function validateTransactions($object, array $xactions) {
	+ $map = $object->getEngine()
	+ ->setViewer($this->getActor())
	+ ->newSubtypeMap();
	+
	+ $errors = array();
	+ foreach ($xactions as $xaction) {
	+ $new = $xaction->getNewValue();
	+
	+ if ($map->isValidSubtype($new)) {
	+ continue;
	+ }
	+
	+ $errors[] = $this->newInvalidError(
	+ pht('Subtype "%s" is not a valid subtype.', $new),
	+ $xaction);
	+ }
	+
	+ return $errors;
	+ }
	+
	+}
	diff --git a/src/applications/transactions/xaction/PhabricatorEditEngineTransactionType.php b/src/applications/transactions/xaction/PhabricatorEditEngineTransactionType.php
	new file mode 100644
	--- /dev/null
	+++ b/src/applications/transactions/xaction/PhabricatorEditEngineTransactionType.php
	@@ -0,0 +1,4 @@
	+<?php
	+
	+abstract class PhabricatorEditEngineTransactionType
	+ extends PhabricatorModularTransactionType {}

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