Add support for custom "Wait for Approval" instructions

Summary:
See PHI1229. An install has a somewhat duct-taped registration flow which can dump users on the "Wait for Approval" screen without clear guidance. The desired guidance is something like "this is totally normal, just wait a bit for a bot to approve you".

Adding guidance here is generally reasonable and consistent with the intent of this feature.

Test Plan: {F6426583}

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: kylec

Differential Revision: https://secure.phabricator.com/D20492

src/__phutil_library_map__.php

@@ -2419,6 +2419,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthTryFactorAction' => 'applications/auth/action/PhabricatorAuthTryFactorAction.php',
     'PhabricatorAuthUnlinkController' => 'applications/auth/controller/PhabricatorAuthUnlinkController.php',
     'PhabricatorAuthValidateController' => 'applications/auth/controller/PhabricatorAuthValidateController.php',
+    'PhabricatorAuthWaitForApprovalMessageType' => 'applications/auth/message/PhabricatorAuthWaitForApprovalMessageType.php',
     'PhabricatorAuthWelcomeMailMessageType' => 'applications/auth/message/PhabricatorAuthWelcomeMailMessageType.php',
     'PhabricatorAuthenticationConfigOptions' => 'applications/config/option/PhabricatorAuthenticationConfigOptions.php',
     'PhabricatorAutoEventListener' => 'infrastructure/events/PhabricatorAutoEventListener.php',
@@ -8357,6 +8358,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthTryFactorAction' => 'PhabricatorSystemAction',
     'PhabricatorAuthUnlinkController' => 'PhabricatorAuthController',
     'PhabricatorAuthValidateController' => 'PhabricatorAuthController',
+    'PhabricatorAuthWaitForApprovalMessageType' => 'PhabricatorAuthMessageType',
     'PhabricatorAuthWelcomeMailMessageType' => 'PhabricatorAuthMessageType',
     'PhabricatorAuthenticationConfigOptions' => 'PhabricatorApplicationConfigOptions',
     'PhabricatorAutoEventListener' => 'PhabricatorEventListener',

src/applications/auth/controller/PhabricatorAuthNeedsApprovalController.php

@@ -18,20 +18,51 @@ final class PhabricatorAuthNeedsApprovalController
   public function handleRequest(AphrontRequest $request) {
     $viewer = $this->getViewer();
 
+    $instructions = $this->newCustomWaitForApprovalInstructions();
+
     $wait_for_approval = pht(
       "Your account has been created, but needs to be approved by an ".
       "administrator. You'll receive an email once your account is approved.");
 
-    $dialog = id(new AphrontDialogView())
-      ->setUser($viewer)
+    $dialog = $this->newDialog()
       ->setTitle(pht('Wait for Approval'))
       ->appendChild($wait_for_approval)
       ->addCancelButton('/', pht('Wait Patiently'));
 
+    $crumbs = $this->buildApplicationCrumbs()
+      ->addTextCrumb(pht('Wait For Approval'))
+      ->setBorder(true);
+
     return $this->newPage()
       ->setTitle(pht('Wait For Approval'))
-      ->appendChild($dialog);
+      ->setCrumbs($crumbs)
+      ->appendChild(
+        array(
+          $instructions,
+          $dialog,
+        ));
 
   }
 
+  private function newCustomWaitForApprovalInstructions() {
+    $viewer = $this->getViewer();
+
+    $text = PhabricatorAuthMessage::loadMessageText(
+      $viewer,
+      PhabricatorAuthWaitForApprovalMessageType::MESSAGEKEY);
+
+    if (!strlen($text)) {
+      return null;
+    }
+
+    $remarkup_view = new PHUIRemarkupView($viewer, $text);
+
+    return phutil_tag(
+      'div',
+      array(
+        'class' => 'auth-custom-message',
+      ),
+      $remarkup_view);
+  }
+
 }

src/applications/auth/message/PhabricatorAuthWaitForApprovalMessageType.php

@@ -0,0 +1,19 @@
+<?php
+
+final class PhabricatorAuthWaitForApprovalMessageType
+  extends PhabricatorAuthMessageType {
+
+  const MESSAGEKEY = 'auth.wait-for-approval';
+
+  public function getDisplayName() {
+    return pht('Wait For Approval Instructions');
+  }
+
+  public function getShortDescription() {
+    return pht(
+      'Instructions on the "Wait For Approval" screen, shown to users who '.
+      'have registered an account that has not yet been approved by an '.
+      'administrator.');
+  }
+
+}