[Payment Request] Displays Contact Info in the payment summary view

ios/chrome/browser/payments/payment_request_view_controller.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/payments/payment_request_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_data_util.h"
 #include "components/autofill/core/browser/autofill_profile.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/field_types.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/payments/currency_formatter.h"
 #include "components/strings/grit/components_strings.h"
+#import "ios/chrome/browser/payments/cells/autofill_profile_item.h"
 #import "ios/chrome/browser/payments/cells/page_info_item.h"
 #import "ios/chrome/browser/payments/cells/payment_method_item.h"
 #import "ios/chrome/browser/payments/cells/price_item.h"
-#import "ios/chrome/browser/payments/cells/shipping_address_item.h"
 #import "ios/chrome/browser/payments/payment_request_util.h"
 #import "ios/chrome/browser/payments/payment_request_view_controller_actions.h"
 #import "ios/chrome/browser/ui/autofill/cells/status_item.h"
 #import "ios/chrome/browser/ui/collection_view/cells/MDCCollectionViewCell+Chrome.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_detail_item.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_text_item.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h"
 #import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #include "ios/chrome/browser/ui/rtl_geometry.h"
 #include "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ios/chrome/grit/ios_strings.h"
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
 #import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
 #import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-using payment_request_util::NameLabelFromAutofillProfile;
-using payment_request_util::AddressLabelFromAutofillProfile;
-using payment_request_util::PhoneNumberLabelFromAutofillProfile;
+using payment_request_util::GetNameLabelFromAutofillProfile;
+using payment_request_util::GetAddressLabelFromAutofillProfile;
+using payment_request_util::GetPhoneNumberLabelFromAutofillProfile;
+using payment_request_util::GetEmailLabelFromAutofillProfile;

[please use gerrit instead, 2017/02/26 01:55:25]

Please put these statements inside the anonymous namespace and prepend the names
with "::". This prevents polluting the global namespace and ensures you're using
the correct names.

[Moe, 2017/02/27 16:43:23]

Done.

 
 NSString* const kPaymentRequestCollectionViewID =
     @"kPaymentRequestCollectionViewID";
 
 namespace {
 
 const CGFloat kButtonEdgeInset = 9;
 const CGFloat kSeparatorEdgeInset = 14;
 
 typedef NS_ENUM(NSInteger, SectionIdentifier) {
   SectionIdentifierSummary = kSectionIdentifierEnumZero,
   SectionIdentifierShipping,
   SectionIdentifierPayment,
-
+  SectionIdentifierContactInfo,
 };
 
 typedef NS_ENUM(NSInteger, ItemType) {
   ItemTypeSummaryPageInfo = kItemTypeEnumZero,
   ItemTypeSpinner,
   ItemTypeSummaryTotal,
   ItemTypeShippingTitle,
   ItemTypeShippingAddress,
   ItemTypeAddShippingAddress,
   ItemTypeShippingOption,
   ItemTypeSelectShippingOption,
   ItemTypePaymentTitle,
   ItemTypePaymentMethod,
   ItemTypeAddPaymentMethod,
+  ItemTypeContactInfoTitle,
+  ItemTypeContactInfo,
+  ItemTypeAddContactInfo,
 };
 
 }  // namespace
 
 @interface PaymentRequestViewController ()<
     PaymentRequestViewControllerActions> {
   UIBarButtonItem* _cancelButton;
   MDCFlatButton* _payButton;
 
   // The PaymentRequest object owning an instance of web::PaymentRequest as
   // provided by the page invoking the Payment Request API. This is a weak
   // pointer and should outlive this class.
   PaymentRequest* _paymentRequest;
 
-  PriceItem* _paymentSummaryItem;
-  ShippingAddressItem* _selectedShippingAddressItem;
-  CollectionViewTextItem* _selectedShippingOptionItem;
-  PaymentMethodItem* _selectedPaymentMethodItem;
+  __weak PriceItem* _paymentSummaryItem;
+  __weak AutofillProfileItem* _selectedShippingAddressItem;
+  __weak CollectionViewTextItem* _selectedShippingOptionItem;
+  __weak PaymentMethodItem* _selectedPaymentMethodItem;
+  __weak AutofillProfileItem* _selectedContactInfoItem;
 }
 
 @end
 
 @implementation PaymentRequestViewController
 
 @synthesize pageFavicon = _pageFavicon;
 @synthesize pageTitle = _pageTitle;
 @synthesize pageHost = _pageHost;
 @synthesize pending = _pending;
@@ skipping 89 matching lines @@
   if (_pending) {
     [_payButton setEnabled:NO];
     [_cancelButton setEnabled:NO];
 
     StatusItem* statusItem = [[StatusItem alloc] initWithType:ItemTypeSpinner];
     statusItem.text = l10n_util::GetNSString(IDS_PAYMENTS_PROCESSING_MESSAGE);
     [model addItem:statusItem toSectionWithIdentifier:SectionIdentifierSummary];
     return;
   }
 
-  _paymentSummaryItem = [[PriceItem alloc] initWithType:ItemTypeSummaryTotal];
-  [self fillPaymentSummaryItem:_paymentSummaryItem
+  PriceItem* paymentSummaryItem =
+      [[PriceItem alloc] initWithType:ItemTypeSummaryTotal];
+  _paymentSummaryItem = paymentSummaryItem;
+  [self fillPaymentSummaryItem:paymentSummaryItem
                withPaymentItem:_paymentRequest->payment_details().total
          withTotalValueChanged:NO];
   if (!_paymentRequest->payment_details().display_items.empty()) {
-    _paymentSummaryItem.accessoryType =
+    paymentSummaryItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
-    _paymentSummaryItem.accessibilityTraits |= UIAccessibilityTraitButton;
+    paymentSummaryItem.accessibilityTraits |= UIAccessibilityTraitButton;
   }
-  [model addItem:_paymentSummaryItem
+  [model addItem:paymentSummaryItem
       toSectionWithIdentifier:SectionIdentifierSummary];
 
   // Shipping section.
   [model addSectionWithIdentifier:SectionIdentifierShipping];
 
   CollectionViewTextItem* shippingTitle =
       [[CollectionViewTextItem alloc] initWithType:ItemTypeShippingTitle];
   shippingTitle.text =
       payment_request_util::GetShippingSectionTitle(_paymentRequest);
   [model setHeader:shippingTitle
       forSectionWithIdentifier:SectionIdentifierShipping];
 
-  CollectionViewItem* shippingAddressItem = nil;
+  id shippingAddressItem = nil;
   if (_paymentRequest->selected_shipping_profile()) {
-    _selectedShippingAddressItem =
-        [[ShippingAddressItem alloc] initWithType:ItemTypeShippingAddress];
-    shippingAddressItem = _selectedShippingAddressItem;
-    [self fillShippingAddressItem:_selectedShippingAddressItem
-                      withAddress:_paymentRequest->selected_shipping_profile()];
-    _selectedShippingAddressItem.accessoryType =
+    AutofillProfileItem* selectedShippingAddressItem =
+        [[AutofillProfileItem alloc] initWithType:ItemTypeShippingAddress];
+    shippingAddressItem = selectedShippingAddressItem;
+    _selectedShippingAddressItem = selectedShippingAddressItem;
+    [self fillShippingAddressItem:selectedShippingAddressItem
+              withAutofillProfile:_paymentRequest->selected_shipping_profile()];
+    selectedShippingAddressItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
-
+    selectedShippingAddressItem.accessibilityTraits |=
+        UIAccessibilityTraitButton;
   } else {
     CollectionViewDetailItem* addAddressItem = [[CollectionViewDetailItem alloc]
         initWithType:ItemTypeAddShippingAddress];
     shippingAddressItem = addAddressItem;
     addAddressItem.text =
         payment_request_util::GetShippingAddressSelectorTitle(_paymentRequest);
-    addAddressItem.detailText = [l10n_util::GetNSString(
-        IDS_IOS_PAYMENT_REQUEST_ADD_SHIPPING_ADDRESS_BUTTON)
+    addAddressItem.detailText = [l10n_util::GetNSString(IDS_PAYMENTS_ADD_BUTTON)
         uppercaseStringWithLocale:[NSLocale currentLocale]];
+    addAddressItem.accessibilityTraits |= UIAccessibilityTraitButton;
   }
-  shippingAddressItem.accessibilityTraits |= UIAccessibilityTraitButton;
   [model addItem:shippingAddressItem
       toSectionWithIdentifier:SectionIdentifierShipping];
 
-  CollectionViewItem* shippingOptionItem = nil;
+  id shippingOptionItem = nil;
   if (_paymentRequest->selected_shipping_option()) {
-    _selectedShippingOptionItem =
+    CollectionViewTextItem* selectedShippingOptionItem =
         [[CollectionViewTextItem alloc] initWithType:ItemTypeShippingOption];
-    shippingOptionItem = _selectedShippingOptionItem;
-    [self fillShippingOptionItem:_selectedShippingOptionItem
+    shippingOptionItem = selectedShippingOptionItem;
+    _selectedShippingOptionItem = selectedShippingOptionItem;
+    [self fillShippingOptionItem:selectedShippingOptionItem
                       withOption:_paymentRequest->selected_shipping_option()];
-    _selectedShippingOptionItem.accessoryType =
+    selectedShippingOptionItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
+    selectedShippingOptionItem.accessibilityTraits |=
+        UIAccessibilityTraitButton;
   } else {
     CollectionViewDetailItem* selectShippingOptionItem =
         [[CollectionViewDetailItem alloc]
             initWithType:ItemTypeSelectShippingOption];
     shippingOptionItem = selectShippingOptionItem;
     selectShippingOptionItem.text =
         payment_request_util::GetShippingOptionSelectorTitle(_paymentRequest);
     selectShippingOptionItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
+    selectShippingOptionItem.accessibilityTraits |= UIAccessibilityTraitButton;
   }
-  shippingOptionItem.accessibilityTraits |= UIAccessibilityTraitButton;
   [model addItem:shippingOptionItem
       toSectionWithIdentifier:SectionIdentifierShipping];
 
   // Payment method section.
   [model addSectionWithIdentifier:SectionIdentifierPayment];
 
   CollectionViewItem* paymentMethodItem = nil;
   if (_paymentRequest->selected_credit_card()) {
     CollectionViewTextItem* paymentTitle =
         [[CollectionViewTextItem alloc] initWithType:ItemTypePaymentTitle];
     paymentTitle.text =
-        l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_PAYMENT_METHOD_HEADER);
+        l10n_util::GetNSString(IDS_PAYMENTS_METHOD_OF_PAYMENT_LABEL);
     [model setHeader:paymentTitle
         forSectionWithIdentifier:SectionIdentifierPayment];
 
-    _selectedPaymentMethodItem =
+    PaymentMethodItem* selectedPaymentMethodItem =
         [[PaymentMethodItem alloc] initWithType:ItemTypePaymentMethod];
-    paymentMethodItem = _selectedPaymentMethodItem;
-    [self fillPaymentMethodItem:_selectedPaymentMethodItem
-              withPaymentMethod:_paymentRequest->selected_credit_card()];
-    _selectedPaymentMethodItem.accessoryType =
+    paymentMethodItem = selectedPaymentMethodItem;
+    _selectedPaymentMethodItem = selectedPaymentMethodItem;
+    [self fillPaymentMethodItem:selectedPaymentMethodItem
+                 withCreditCard:_paymentRequest->selected_credit_card()];
+    selectedPaymentMethodItem.accessoryType =
         MDCCollectionViewCellAccessoryDisclosureIndicator;
+    selectedPaymentMethodItem.accessibilityTraits |= UIAccessibilityTraitButton;
   } else {
     CollectionViewDetailItem* addPaymentMethodItem = [
         [CollectionViewDetailItem alloc] initWithType:ItemTypeAddPaymentMethod];
     paymentMethodItem = addPaymentMethodItem;
     addPaymentMethodItem.text =
-        l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_PAYMENT_METHOD_HEADER);
-    addPaymentMethodItem.detailText = [l10n_util::GetNSString(
-        IDS_IOS_PAYMENT_REQUEST_ADD_SHIPPING_ADDRESS_BUTTON)
-        uppercaseStringWithLocale:[NSLocale currentLocale]];
+        l10n_util::GetNSString(IDS_PAYMENTS_METHOD_OF_PAYMENT_LABEL);
+    addPaymentMethodItem.detailText =
+        [l10n_util::GetNSString(IDS_PAYMENTS_ADD_BUTTON)
+            uppercaseStringWithLocale:[NSLocale currentLocale]];
+    addPaymentMethodItem.accessibilityTraits |= UIAccessibilityTraitButton;
   }
-  paymentMethodItem.accessibilityTraits |= UIAccessibilityTraitButton;
   [model addItem:paymentMethodItem
       toSectionWithIdentifier:SectionIdentifierPayment];
+
+  // Contact Info section.
+  [model addSectionWithIdentifier:SectionIdentifierContactInfo];
+
+  id contactInfoItem = nil;
+  if (_paymentRequest->selected_contact_profile()) {
+    CollectionViewTextItem* contactInfoTitle =
+        [[CollectionViewTextItem alloc] initWithType:ItemTypeContactInfoTitle];
+    contactInfoTitle.text =
+        l10n_util::GetNSString(IDS_PAYMENTS_CONTACT_DETAILS_LABEL);
+    [model setHeader:contactInfoTitle
+        forSectionWithIdentifier:SectionIdentifierContactInfo];
+
+    AutofillProfileItem* selectedContactInfoItem =
+        [[AutofillProfileItem alloc] initWithType:ItemTypeContactInfo];
+    contactInfoItem = selectedContactInfoItem;
+    _selectedContactInfoItem = selectedContactInfoItem;
+    [self fillContactInfoItem:selectedContactInfoItem
+          withAutofillProfile:_paymentRequest->selected_contact_profile()];
+    selectedContactInfoItem.accessoryType =
+        MDCCollectionViewCellAccessoryDisclosureIndicator;
+
+  } else {
+    CollectionViewDetailItem* addContactInfoItem =
+        [[CollectionViewDetailItem alloc] initWithType:ItemTypeAddContactInfo];
+    contactInfoItem = addContactInfoItem;
+    addContactInfoItem.text =
+        l10n_util::GetNSString(IDS_PAYMENTS_CONTACT_DETAILS_LABEL);
+    addContactInfoItem.detailText =
+        [l10n_util::GetNSString(IDS_PAYMENTS_ADD_BUTTON)
+            uppercaseStringWithLocale:[NSLocale currentLocale]];
+    addContactInfoItem.accessibilityTraits |= UIAccessibilityTraitButton;
+  }
+  [model addItem:contactInfoItem
+      toSectionWithIdentifier:SectionIdentifierContactInfo];
 }
 
 - (void)viewDidLoad {
   [super viewDidLoad];
   self.collectionView.accessibilityIdentifier = kPaymentRequestCollectionViewID;
 
   // Customize collection view settings.
   self.styler.cellStyle = MDCCollectionViewCellStyleCard;
   self.styler.separatorInset =
       UIEdgeInsetsMake(0, kSeparatorEdgeInset, 0, kSeparatorEdgeInset);
 }
 
 - (void)updatePaymentSummaryWithTotalValueChanged:(BOOL)totalValueChanged {
   [self fillPaymentSummaryItem:_paymentSummaryItem
                withPaymentItem:_paymentRequest->payment_details().total
          withTotalValueChanged:totalValueChanged];
   NSIndexPath* indexPath =
       [self.collectionViewModel indexPathForItem:_paymentSummaryItem
                          inSectionWithIdentifier:SectionIdentifierSummary];
   [self.collectionView reloadItemsAtIndexPaths:@[ indexPath ]];
 }
 
 - (void)updateSelectedShippingAddressUI {
   [self fillShippingAddressItem:_selectedShippingAddressItem
-                    withAddress:_paymentRequest->selected_shipping_profile()];
+            withAutofillProfile:_paymentRequest->selected_shipping_profile()];
   NSIndexPath* indexPath =
       [self.collectionViewModel indexPathForItem:_selectedShippingAddressItem
                          inSectionWithIdentifier:SectionIdentifierShipping];
   [self.collectionView reloadItemsAtIndexPaths:@[ indexPath ]];
 }
 
 - (void)updateSelectedShippingOptionUI {
   [self fillShippingOptionItem:_selectedShippingOptionItem
                     withOption:_paymentRequest->selected_shipping_option()];
   NSIndexPath* indexPath =
       [self.collectionViewModel indexPathForItem:_selectedShippingOptionItem
                          inSectionWithIdentifier:SectionIdentifierShipping];
   [self.collectionView reloadItemsAtIndexPaths:@[ indexPath ]];
 }
 
 - (void)updateSelectedPaymentMethodUI {
   [self fillPaymentMethodItem:_selectedPaymentMethodItem
-            withPaymentMethod:_paymentRequest->selected_credit_card()];
+               withCreditCard:_paymentRequest->selected_credit_card()];
   NSIndexPath* indexPath =
       [self.collectionViewModel indexPathForItem:_selectedPaymentMethodItem
                          inSectionWithIdentifier:SectionIdentifierPayment];
   [self.collectionView reloadItemsAtIndexPaths:@[ indexPath ]];
 }
 
 #pragma mark - Helper methods
 
 - (void)fillPaymentSummaryItem:(PriceItem*)item
                withPaymentItem:(web::PaymentItem)paymentItem
          withTotalValueChanged:(BOOL)totalValueChanged {
   item.item = l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_TOTAL_HEADER);
   payments::CurrencyFormatter* currencyFormatter =
       _paymentRequest->GetOrCreateCurrencyFormatter();
   item.price = SysUTF16ToNSString(l10n_util::GetStringFUTF16(
       IDS_IOS_PAYMENT_REQUEST_PAYMENT_ITEMS_TOTAL_FORMAT,
       base::UTF8ToUTF16(currencyFormatter->formatted_currency_code()),
       currencyFormatter->Format(base::UTF16ToASCII(paymentItem.amount.value))));
   item.notification =
       totalValueChanged
           ? l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_TOTAL_UPDATED_LABEL)
           : nil;
 }
 
-- (void)fillShippingAddressItem:(ShippingAddressItem*)item
-                    withAddress:(autofill::AutofillProfile*)address {
-  item.name = NameLabelFromAutofillProfile(address);
-  item.address = AddressLabelFromAutofillProfile(address);
-  item.phoneNumber = PhoneNumberLabelFromAutofillProfile(address);
+- (void)fillShippingAddressItem:(AutofillProfileItem*)item
+            withAutofillProfile:(autofill::AutofillProfile*)profile {
+  item.name = GetNameLabelFromAutofillProfile(profile);
+  item.address = GetAddressLabelFromAutofillProfile(profile);
+  item.phoneNumber = GetPhoneNumberLabelFromAutofillProfile(profile);
 }
 
 - (void)fillShippingOptionItem:(CollectionViewTextItem*)item
                     withOption:(web::PaymentShippingOption*)option {
   item.text = base::SysUTF16ToNSString(option->label);
   payments::CurrencyFormatter* currencyFormatter =
       _paymentRequest->GetOrCreateCurrencyFormatter();
   item.detailText = SysUTF16ToNSString(
       currencyFormatter->Format(base::UTF16ToASCII(option->amount.value)));
 }
 
 - (void)fillPaymentMethodItem:(PaymentMethodItem*)item
-            withPaymentMethod:(autofill::CreditCard*)creditCard {
+               withCreditCard:(autofill::CreditCard*)creditCard {
   item.methodID = base::SysUTF16ToNSString(creditCard->TypeAndLastFourDigits());
   item.methodDetail = base::SysUTF16ToNSString(
       creditCard->GetRawInfo(autofill::CREDIT_CARD_NAME_FULL));
   int selectedMethodCardTypeIconID =
       autofill::data_util::GetPaymentRequestData(creditCard->type())
           .icon_resource_id;
   item.methodTypeIcon = NativeImage(selectedMethodCardTypeIconID);
 }
 
+- (void)fillContactInfoItem:(AutofillProfileItem*)item
+        withAutofillProfile:(autofill::AutofillProfile*)profile {
+  item.name = GetNameLabelFromAutofillProfile(profile);
+  item.phoneNumber = GetPhoneNumberLabelFromAutofillProfile(profile);
+  item.email = GetEmailLabelFromAutofillProfile(profile);
+}
+
 #pragma mark UICollectionViewDataSource
 
 - (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView
                  cellForItemAtIndexPath:(nonnull NSIndexPath*)indexPath {
   UICollectionViewCell* cell =
       [super collectionView:collectionView cellForItemAtIndexPath:indexPath];
 
   NSInteger itemType =
       [self.collectionViewModel itemTypeForIndexPath:indexPath];
   switch (itemType) {
@@ skipping 39 matching lines @@
       [_delegate paymentRequestViewControllerDidSelectShippingAddressItem:self];
       break;
     case ItemTypeShippingOption:
     case ItemTypeSelectShippingOption:
       [_delegate paymentRequestViewControllerDidSelectShippingOptionItem:self];
       break;
     case ItemTypePaymentMethod:
     case ItemTypeAddPaymentMethod:
       [_delegate paymentRequestViewControllerDidSelectPaymentMethodItem:self];
       break;
+    case ItemTypeContactInfo:
+    case ItemTypeAddContactInfo:
+      // TODO(crbug.com/602666): Handle displaying contact info selection view.
+      break;
     default:
       NOTREACHED();
       break;
   }
 }
 
 #pragma mark MDCCollectionViewStylingDelegate
 
 - (CGFloat)collectionView:(UICollectionView*)collectionView
     cellHeightAtIndexPath:(NSIndexPath*)indexPath {
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
   switch (item.type) {
     case ItemTypeSpinner:
     case ItemTypeShippingAddress:
     case ItemTypePaymentMethod:
+    case ItemTypeContactInfo:
       return [MDCCollectionViewCell
           cr_preferredHeightForWidth:CGRectGetWidth(collectionView.bounds)
                              forItem:item];
     case ItemTypeShippingOption:
       return MDCCellDefaultTwoLineHeight;
     case ItemTypeSummaryPageInfo:
     case ItemTypeSummaryTotal:
     case ItemTypeShippingTitle:
     case ItemTypeAddShippingAddress:
     case ItemTypeSelectShippingOption:
     case ItemTypePaymentTitle:
     case ItemTypeAddPaymentMethod:
+    case ItemTypeContactInfoTitle:
+    case ItemTypeAddContactInfo:
       return MDCCellDefaultOneLineHeight;
     default:
       NOTREACHED();
       return MDCCellDefaultOneLineHeight;
   }
 }
 
 // If there are no payment items to display, there is no effect from touching
 // the total so there should not be an ink ripple.
 - (BOOL)collectionView:(UICollectionView*)collectionView
     hidesInkViewAtIndexPath:(NSIndexPath*)indexPath {
   NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
   if (type == ItemTypeSummaryTotal &&
       _paymentRequest->payment_details().display_items.empty()) {
     return YES;
   } else {
     return NO;
   }
 }
 
 @end