[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;
 
@@ -14,12 +15,14 @@
 
 - (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
-                     userFullName:(NSString*)userFullName
-                        userImage:(UIImage*)userImage
-                   hasCloseButton:(BOOL)hasCloseButton
+// 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
     NS_DESIGNATED_INITIALIZER;
 
 // Configures a sign-in promo view.

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
-                     userFullName:(NSString*)userFullName
-                        userImage:(UIImage*)userImage
-                   hasCloseButton:(BOOL)hasCloseButton {
+- (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];
@@ -62,33 +62,38 @@ using l10n_util::GetNSStringF;
 
 - (void)configureSigninPromoView:(SigninPromoView*)signinPromoView {
   signinPromoView.closeButton.hidden = !self.hasCloseButton;
-  if (!self.userEmail) {
-    signinPromoView.mode = IdentityPromoViewModeNoAccounts;
-    NSString* signInString =
-        GetNSString(IDS_IOS_OPTIONS_IMPORT_DATA_TITLE_SIGNIN);
-    signinPromoView.accessibilityLabel = signInString;
-    [signinPromoView.primaryButton setTitle:signInString
-                                   forState:UIControlStateNormal];
-  } else {
-    signinPromoView.mode = IdentityPromoViewModeSigninWithAccount;
-    NSString* name =
-        self.userFullName.length ? self.userFullName : self.userEmail;
-    base::string16 name16 = SysNSStringToUTF16(name);
-    [signinPromoView.primaryButton
-        setTitle:GetNSStringF(IDS_IOS_SIGNIN_PROMO_CONTINUE_AS, name16)
-        forState:UIControlStateNormal];
-    signinPromoView.accessibilityLabel =
-        GetNSStringF(IDS_IOS_SIGNIN_PROMO_ACCESSIBILITY_LABEL, name16);
-    [signinPromoView.secondaryButton
-        setTitle:GetNSString(IDS_IOS_SIGNIN_PROMO_CHANGE_ACCOUNT)
-        forState:UIControlStateNormal];
-    UIImage* image = self.userImage;
-    if (!image) {
-      image = ios::GetChromeBrowserProvider()
-                  ->GetSigninResourcesProvider()
-                  ->GetDefaultAvatar();
+  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];
+      break;
+    }
+    case IdentityPromoViewModeSigninWithAccount: {
+      NSString* name =
+          self.userFullName.length ? self.userFullName : self.userEmail;
+      base::string16 name16 = SysNSStringToUTF16(name);
+      [signinPromoView.primaryButton
+          setTitle:GetNSStringF(IDS_IOS_SIGNIN_PROMO_CONTINUE_AS, name16)
+          forState:UIControlStateNormal];
+      signinPromoView.accessibilityLabel =
+          GetNSStringF(IDS_IOS_SIGNIN_PROMO_ACCESSIBILITY_LABEL, name16);
+      [signinPromoView.secondaryButton
+          setTitle:GetNSString(IDS_IOS_SIGNIN_PROMO_CHANGE_ACCOUNT)
+          forState:UIControlStateNormal];
+      UIImage* image = self.userImage;
+      if (!image) {
+        image = ios::GetChromeBrowserProvider()
+                    ->GetSigninResourcesProvider()
+                    ->GetDefaultAvatar();
+      }
+      [signinPromoView setProfileImage:image];
+      break;
     }
-    [signinPromoView setProfileImage:image];
   }
 }
 

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

@@ -436,15 +436,18 @@ const char* AlreadySeenSigninViewPreferenceKey(
       AlreadySeenSigninViewPreferenceKey(self.accessPoint) != nullptr;
   if (_defaultIdentity) {
     return [[SigninPromoViewConfigurator alloc]
-        initWithUserEmail:_defaultIdentity.userEmail
-             userFullName:_defaultIdentity.userFullName
-                userImage:self.identityAvatar
-           hasCloseButton:hasCloseButton];
+        initWithIdentityPromoViewMode:IdentityPromoViewModeSigninWithAccount
+                            userEmail:_defaultIdentity.userEmail
+                         userFullName:_defaultIdentity.userFullName
+                            userImage:self.identityAvatar
+                       hasCloseButton:hasCloseButton];
   }
-  return [[SigninPromoViewConfigurator alloc] initWithUserEmail:nil
-                                                   userFullName:nil
-                                                      userImage:nil
-                                                 hasCloseButton:hasCloseButton];
+  return [[SigninPromoViewConfigurator alloc]
+      initWithIdentityPromoViewMode:IdentityPromoViewModeNoAccounts
+                          userEmail:nil
+                       userFullName:nil
+                          userImage:nil
+                     hasCloseButton:hasCloseButton];
 }
 
 - (void)signinPromoViewIsVisible {

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

@@ -489,10 +489,11 @@ typedef NS_ENUM(NSInteger, ItemType) {
   TableViewSigninPromoItem* signinPromo =
       [[TableViewSigninPromoItem alloc] initWithType:ItemTypeAccount];
   signinPromo.configurator = [[SigninPromoViewConfigurator alloc]
-      initWithUserEmail:@"jonhdoe@example.com"
-           userFullName:@"John Doe"
-              userImage:nil
-         hasCloseButton:NO];
+      initWithIdentityPromoViewMode:IdentityPromoViewModeSigninWithAccount
+                          userEmail:@"jonhdoe@example.com"
+                       userFullName:@"John Doe"
+                          userImage:nil
+                     hasCloseButton:NO];
   signinPromo.text = @"Signin promo text example";
   [model addItem:signinPromo toSectionWithIdentifier:SectionIdentifierAccount];