Refine SAE UI.

SignalMessaging/attachments/SharingThreadPickerViewController.m

@@ -149,6 +149,12 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
 
     NSString *_Nullable messageText = [self convertAttachmentToMessageTextIfPossible];
 
+    // Hide the navigation bar before presenting the approval view.
+    //
+    // Note that cancelling in the approval views will dismiss the entire
+    // share extension, so there is no "back" button.
+    self.navigationController.navigationBarHidden = YES;
+
     if (messageText) {
         MessageApprovalViewController *approvalVC =
             [[MessageApprovalViewController alloc] initWithMessageText:messageText

SignalMessaging/contacts/CountryCodeViewController.h

@@ -21,4 +21,6 @@
 
 @property (nonatomic, weak) id<CountryCodeViewControllerDelegate> countryCodeDelegate;
 
+@property (nonatomic) BOOL isPresentedInNavigationController;
+
 @end

SignalMessaging/contacts/CountryCodeViewController.m

@@ -31,10 +31,12 @@
 
     self.countryCodes = [PhoneNumberUtil countryCodesForSearchTerm:nil];
 
-    self.navigationItem.leftBarButtonItem =
-        [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop
-                                                      target:self
-                                                      action:@selector(dismissWasPressed:)];
+    if (!self.isPresentedInNavigationController) {
+        self.navigationItem.leftBarButtonItem =
+            [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop
+                                                          target:self
+                                                          action:@selector(dismissWasPressed:)];
+    }
 
     [self createViews];
 }

SignalMessaging/contacts/SelectRecipientViewController.h

@@ -40,6 +40,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property (nonatomic, readonly) ContactsViewHelper *contactsViewHelper;
 
+@property (nonatomic) BOOL isPresentedInNavigationController;
+
 @end
 
 NS_ASSUME_NONNULL_END

SignalMessaging/contacts/SelectRecipientViewController.m

@@ -238,10 +238,10 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
                   callingCode:(NSString *)callingCode
                   countryCode:(NSString *)countryCode
 {
-
     _callingCode = callingCode;
 
-    NSString *title = [NSString stringWithFormat:@"%@ (%@)", callingCode, countryCode.uppercaseString];
+    NSString *titleFormat = ([UIView new].isRTL ? @"(%2$@) %1$@" : @"%1$@ (%2$@)");
+    NSString *title = [NSString stringWithFormat:titleFormat, callingCode, countryCode.uppercaseString];
     [self.countryCodeButton setTitle:title forState:UIControlStateNormal];
     [self.countryCodeButton layoutSubviews];
 
@@ -263,9 +263,14 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
 {
     CountryCodeViewController *countryCodeController = [CountryCodeViewController new];
     countryCodeController.countryCodeDelegate = self;
-    UINavigationController *navigationController =
-        [[UINavigationController alloc] initWithRootViewController:countryCodeController];
-    [self presentViewController:navigationController animated:YES completion:[UIUtil modalCompletionBlock]];
+    countryCodeController.isPresentedInNavigationController = self.isPresentedInNavigationController;
+    if (self.isPresentedInNavigationController) {
+        [self.navigationController pushViewController:countryCodeController animated:YES];
+    } else {
+        UINavigationController *navigationController =
+            [[UINavigationController alloc] initWithRootViewController:countryCodeController];
+        [self presentViewController:navigationController animated:YES completion:[UIUtil modalCompletionBlock]];
+    }
 }
 
 - (void)phoneNumberButtonPressed

SignalMessaging/contacts/SelectThreadViewController.m

@@ -181,6 +181,7 @@ NS_ASSUME_NONNULL_BEGIN
                                              NewNonContactConversationViewController *viewController =
                                                  [NewNonContactConversationViewController new];
                                              viewController.nonContactConversationDelegate = weakSelf;
+                                             viewController.isPresentedInNavigationController = YES;
                                              [weakSelf.navigationController pushViewController:viewController
                                                                                       animated:YES];
                                          }]];

SignalShareExtension/ShareViewController.swift

@@ -10,7 +10,7 @@ import SignalServiceKit
 import PromiseKit
 
 @objc
-public class ShareViewController: UINavigationController, ShareViewDelegate, SAEFailedViewDelegate {
+public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailedViewDelegate {
 
     enum ShareViewControllerError: Error {
         case assertionError(description: String)
@@ -105,8 +105,6 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
             self.versionMigrationsDidComplete()
         })
 
-        self.isNavigationBarHidden = true
-
         // We don't need to use "screen protection" in the SAE.
 
         // Ensure OWSContactsSyncing is instantiated.
@@ -470,7 +468,6 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
         self.buildAttachment().then { attachment -> Void in
             let conversationPicker = SharingThreadPickerViewController(shareViewDelegate: self)
             conversationPicker.attachment = attachment
-            self.shareViewNavigationController.isNavigationBarHidden = true
             self.progressPoller = nil
             self.loadViewController = nil
             self.showPrimaryViewController(conversationPicker)