[iOS] Select promo mode in SigninPromoViewConfigurator browser state.

Uses the current state of identity services to select the mode in which
to display the sign-in promo. This prepares the configurator for a third
syncing state to be added in a subsequent patch.

Bug: 1151289
Change-Id: I9a73ef89c30782ed2e09cbda2f3e3e03e985c978
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2578942
Commit-Queue: Nohemi Fernandez <fernandex@chromium.org>
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843007}

ios/chrome/browser/ui/authentication/cells/signin_promo_view_configurator.h

@@ -6,6 +6,7 @@
 #define IOS_CHROME_BROWSER_UI_AUTHENTICATION_CELLS_SIGNIN_PROMO_VIEW_CONFIGURATOR_H_
 
 #import <UIKit/UIKit.h>
+#import "ios/chrome/browser/ui/authentication/cells/signin_promo_view_constants.h"
 
 @class SigninPromoView;
 
@@ -14,9 +15,11 @@
 
 - (instancetype)init NS_UNAVAILABLE;
 
-// Initializes the instance. For cold state mode, set all parameters to nil.
-// For warm state mode set at least the |userEmail| to not nil.
-- (instancetype)initWithUserEmail:(NSString*)userEmail
+// Initializes the instance.
+// |userEmail| is used as a proxy to determine if accounts have
+// been added to the device.
+- (instancetype)initWithIdentityPromoViewMode:(IdentityPromoViewMode)viewMode
+                                    userEmail:(NSString*)userEmail
                                  userFullName:(NSString*)userFullName
                                     userImage:(UIImage*)userImage
                                hasCloseButton:(BOOL)hasCloseButton

ios/chrome/browser/ui/authentication/cells/signin_promo_view_configurator.mm

@@ -36,22 +36,22 @@ using l10n_util::GetNSStringF;
 // If YES the close button will be shown.
 @property(nonatomic) BOOL hasCloseButton;
 
+// State of the identity promo view.
+@property(nonatomic, assign) IdentityPromoViewMode identityPromoViewMode;
+
 @end
 
 @implementation SigninPromoViewConfigurator
 
-@synthesize userEmail = _userEmail;
-@synthesize userFullName = _userFullName;
-@synthesize userImage = _userImage;
-@synthesize hasCloseButton = _hasCloseButton;
-
-- (instancetype)initWithUserEmail:(NSString*)userEmail
+- (instancetype)initWithIdentityPromoViewMode:(IdentityPromoViewMode)viewMode
+                                    userEmail:(NSString*)userEmail
                                  userFullName:(NSString*)userFullName
                                     userImage:(UIImage*)userImage
                                hasCloseButton:(BOOL)hasCloseButton {
   self = [super init];
   if (self) {
     DCHECK(userEmail || (!userEmail && !userFullName && !userImage));
+    _identityPromoViewMode = viewMode;
     _userFullName = [userFullName copy];
     _userEmail = [userEmail copy];
     _userImage = [userImage copy];
@@ -62,15 +62,18 @@ using l10n_util::GetNSStringF;
 
 - (void)configureSigninPromoView:(SigninPromoView*)signinPromoView {
   signinPromoView.closeButton.hidden = !self.hasCloseButton;
-  if (!self.userEmail) {
-    signinPromoView.mode = IdentityPromoViewModeNoAccounts;
+  signinPromoView.mode = self.identityPromoViewMode;
+
+  switch (self.identityPromoViewMode) {
+    case IdentityPromoViewModeNoAccounts: {
       NSString* signInString =
           GetNSString(IDS_IOS_OPTIONS_IMPORT_DATA_TITLE_SIGNIN);
       signinPromoView.accessibilityLabel = signInString;
       [signinPromoView.primaryButton setTitle:signInString
                                      forState:UIControlStateNormal];
-  } else {
-    signinPromoView.mode = IdentityPromoViewModeSigninWithAccount;
+      break;
+    }
+    case IdentityPromoViewModeSigninWithAccount: {
       NSString* name =
           self.userFullName.length ? self.userFullName : self.userEmail;
       base::string16 name16 = SysNSStringToUTF16(name);
@@ -89,6 +92,8 @@ using l10n_util::GetNSStringF;
                     ->GetDefaultAvatar();
       }
       [signinPromoView setProfileImage:image];
+      break;
+    }
   }
 }
 

ios/chrome/browser/ui/authentication/signin_promo_view_mediator.mm

@@ -436,12 +436,15 @@ const char* AlreadySeenSigninViewPreferenceKey(
       AlreadySeenSigninViewPreferenceKey(self.accessPoint) != nullptr;
   if (_defaultIdentity) {
     return [[SigninPromoViewConfigurator alloc]
-        initWithUserEmail:_defaultIdentity.userEmail
+        initWithIdentityPromoViewMode:IdentityPromoViewModeSigninWithAccount
+                            userEmail:_defaultIdentity.userEmail
                          userFullName:_defaultIdentity.userFullName
                             userImage:self.identityAvatar
                        hasCloseButton:hasCloseButton];
   }
-  return [[SigninPromoViewConfigurator alloc] initWithUserEmail:nil
+  return [[SigninPromoViewConfigurator alloc]
+      initWithIdentityPromoViewMode:IdentityPromoViewModeNoAccounts
+                          userEmail:nil
                        userFullName:nil
                           userImage:nil
                      hasCloseButton:hasCloseButton];

ios/chrome/browser/ui/settings/table_cell_catalog_view_controller.mm

@@ -489,7 +489,8 @@ typedef NS_ENUM(NSInteger, ItemType) {
   TableViewSigninPromoItem* signinPromo =
       [[TableViewSigninPromoItem alloc] initWithType:ItemTypeAccount];
   signinPromo.configurator = [[SigninPromoViewConfigurator alloc]
-      initWithUserEmail:@"jonhdoe@example.com"
+      initWithIdentityPromoViewMode:IdentityPromoViewModeSigninWithAccount
+                          userEmail:@"jonhdoe@example.com"
                        userFullName:@"John Doe"
                           userImage:nil
                      hasCloseButton:NO];