Add EditEngine typeahead

Summary: Allows you to set forms via typeahead

Test Plan: `/typeahead/browse/PhabricatorEditEngineDatasource/`

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17065

src/__phutil_library_map__.php

@@ -2572,6 +2572,7 @@ phutil_register_library_map(array(
     'PhabricatorEditEngineConfigurationViewController' => 'applications/transactions/controller/PhabricatorEditEngineConfigurationViewController.php',
     'PhabricatorEditEngineController' => 'applications/transactions/controller/PhabricatorEditEngineController.php',
     'PhabricatorEditEngineCreateQuickActions' => 'applications/settings/quickmenu/PhabricatorEditEngineCreateQuickActions.php',
+    'PhabricatorEditEngineDatasource' => 'applications/transactions/typeahead/PhabricatorEditEngineDatasource.php',
     'PhabricatorEditEngineExtension' => 'applications/transactions/engineextension/PhabricatorEditEngineExtension.php',
     'PhabricatorEditEngineExtensionModule' => 'applications/transactions/engineextension/PhabricatorEditEngineExtensionModule.php',
     'PhabricatorEditEngineListController' => 'applications/transactions/controller/PhabricatorEditEngineListController.php',
@@ -7551,6 +7552,7 @@ phutil_register_library_map(array(
     'PhabricatorEditEngineConfigurationViewController' => 'PhabricatorEditEngineController',
     'PhabricatorEditEngineController' => 'PhabricatorApplicationTransactionController',
     'PhabricatorEditEngineCreateQuickActions' => 'PhabricatorQuickActions',
+    'PhabricatorEditEngineDatasource' => 'PhabricatorTypeaheadDatasource',
     'PhabricatorEditEngineExtension' => 'Phobject',
     'PhabricatorEditEngineExtensionModule' => 'PhabricatorConfigModule',
     'PhabricatorEditEngineListController' => 'PhabricatorEditEngineController',

src/applications/transactions/typeahead/PhabricatorEditEngineDatasource.php

@@ -0,0 +1,39 @@
+<?php
+
+final class PhabricatorEditEngineDatasource
+  extends PhabricatorTypeaheadDatasource {
+
+  public function getBrowseTitle() {
+    return pht('Browse Forms');
+  }
+
+  public function getPlaceholderText() {
+    return pht('Type a form name...');
+  }
+
+  public function getDatasourceApplicationClass() {
+    return 'PhabricatorTransactionsApplication';
+  }
+
+  public function loadResults() {
+    $query = id(new PhabricatorEditEngineConfigurationQuery());
+
+    $forms = $this->executeQuery($query);
+    $results = array();
+    foreach ($forms as $form) {
+
+      $result = id(new PhabricatorTypeaheadResult())
+        ->setName($form->getName())
+        ->setPHID($form->getPHID());
+
+      if ($form->getIsDisabled()) {
+        $result->setClosed(pht('Archived'));
+      }
+
+      $results[] = $result;
+    }
+
+    return $this->filterResultsAgainstTokens($results);
+  }
+
+}