[Payment Request] Accepted credit card type icons in the credit card editor

ios/chrome/browser/payments/credit_card_edit_mediator.mm

 // Copyright 2017 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/credit_card_edit_mediator.h"
 
 #include "base/strings/sys_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/personal_data_manager.h"
 #import "components/autofill/ios/browser/credit_card_util.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/application_context.h"
+#import "ios/chrome/browser/payments/cells/accepted_payment_methods_item.h"
 #import "ios/chrome/browser/payments/cells/payment_method_item.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #import "ios/chrome/browser/payments/payment_request_editor_field.h"
 #import "ios/chrome/browser/payments/payment_request_util.h"
 #import "ios/chrome/browser/ui/autofill/autofill_ui_type.h"
 #import "ios/chrome/browser/ui/autofill/autofill_ui_type_util.h"
 #import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 using ::AutofillUITypeFromAutofillType;
+using ::autofill::data_util::GetCardTypeForBasicCardPaymentType;
+using ::autofill::data_util::GetPaymentRequestData;
 using ::payment_request_util::GetBillingAddressLabelFromAutofillProfile;
 
 const CGFloat kCardTypeIconDimension = 25.0;
 }  // namespace
 
 @interface CreditCardEditViewControllerMediator ()
 
 // 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.
@@ skipping 34 matching lines @@
       base::SysUTF16ToNSString(_creditCard->TypeAndLastFourDigits());
   cardSummaryItem.methodDetail = base::SysUTF16ToNSString(
       _creditCard->GetRawInfo(autofill::CREDIT_CARD_NAME_FULL));
   const int cardTypeIconID =
       autofill::data_util::GetPaymentRequestData(_creditCard->type())
           .icon_resource_id;
   cardSummaryItem.methodTypeIcon = NativeImage(cardTypeIconID);
   return cardSummaryItem;
 }
 
+- (CollectionViewItem*)acceptedPaymentMethodsItem {
+  if (_creditCard && !autofill::IsCreditCardLocal(*_creditCard))
+    return nil;
+
+  NSMutableArray* cardTypeIcons = [NSMutableArray array];
+  for (const auto& supportedNetwork :
+       _paymentRequest->supported_card_networks()) {
+    const std::string cardType =
+        GetCardTypeForBasicCardPaymentType(supportedNetwork);
+    int resourceID = GetPaymentRequestData(cardType).icon_resource_id;
+    UIImage* cardTypeIcon =
+        ResizeImage(NativeImage(resourceID),
+                    CGSizeMake(kCardTypeIconDimension, kCardTypeIconDimension),
+                    ProjectionMode::kAspectFillNoClipping);
+    [cardTypeIcons addObject:cardTypeIcon];
+  }
+
+  AcceptedPaymentMethodsItem* acceptedMethodsItem =
+      [[AcceptedPaymentMethodsItem alloc] init];
+  acceptedMethodsItem.message =
+      l10n_util::GetNSString(IDS_PAYMENTS_ACCEPTED_CARDS_LABEL);
+  acceptedMethodsItem.methodTypeIcons = cardTypeIcons;
+  return acceptedMethodsItem;
+}
+
 - (NSString*)billingAddressLabelForProfileWithGUID:(NSString*)profileGUID {
   DCHECK(profileGUID);
   autofill::AutofillProfile* profile =
       autofill::PersonalDataManager::GetProfileFromProfilesByGUID(
           base::SysNSStringToUTF8(profileGUID),
           _paymentRequest->billing_profiles());
   DCHECK(profile);
   return GetBillingAddressLabelFromAutofillProfile(*profile);
 }
 
@@ skipping 64 matching lines @@
     [[EditorField alloc]
         initWithAutofillUIType:AutofillUITypeFromAutofillType(
                                    autofill::CREDIT_CARD_EXP_4_DIGIT_YEAR)
                          label:l10n_util::GetNSString(IDS_PAYMENTS_EXP_YEAR)
                          value:creditCardExpYear
                       required:YES]
   ];
 }
 
 @end