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

ios/chrome/browser/payments/credit_card_edit_view_controller.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_view_controller.h"
 
 #import "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/payments/payment_request_edit_view_controller+internal.h"
@@ skipping 14 matching lines @@
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 
 NSString* const kCreditCardEditCollectionViewId =
     @"kCreditCardEditCollectionViewId";
 
 typedef NS_ENUM(NSInteger, SectionIdentifier) {
-  SectionIdentifierCardSummary = kSectionIdentifierEnumStart,
+  SectionIdentifierAcceptedMethods = kSectionIdentifierEnumStart,
+  SectionIdentifierCardSummary,
   SectionIdentifierBillingAddress,
   SectionIdentifierSaveCard,
 };
 
 typedef NS_ENUM(NSInteger, ItemType) {
-  ItemTypeCardSummary = kItemTypeEnumStart,
+  ItemTypeAcceptedMethods = kItemTypeEnumStart,
+  ItemTypeCardSummary,
   ItemTypeBillingAddress,
   ItemTypeSaveCard,
 };
 
 }  // namespace
 
 @interface CreditCardEditViewController () {
   NSArray<EditorField*>* _fields;
 
   // Indicates whether the credit card being created should be saved locally.
@@ skipping 112 matching lines @@
 
   // Server card summary section.
   CollectionViewItem* serverCardSummaryItem =
       [_dataSource serverCardSummaryItem];
   if (serverCardSummaryItem) {
     [model addSectionWithIdentifier:SectionIdentifierCardSummary];
     serverCardSummaryItem.type = ItemTypeCardSummary;
     [model addItem:serverCardSummaryItem
         toSectionWithIdentifier:SectionIdentifierCardSummary];
   }
+
+  // Accepted payment methods section.
+  CollectionViewItem* acceptedMethodsItem =
+      [_dataSource acceptedPaymentMethodsItem];
+  if (acceptedMethodsItem) {
+    [model addSectionWithIdentifier:SectionIdentifierAcceptedMethods];
+    acceptedMethodsItem.type = ItemTypeAcceptedMethods;
+    [model addItem:acceptedMethodsItem
+        toSectionWithIdentifier:SectionIdentifierAcceptedMethods];
+  }
 }
 
 - (void)loadFooterItems {
   CollectionViewModel* model = self.collectionViewModel;
 
   // Billing Address section.
   [model addSectionWithIdentifier:SectionIdentifierBillingAddress];
   CollectionViewDetailItem* billingAddressItem =
       [[CollectionViewDetailItem alloc] initWithType:ItemTypeBillingAddress];
   billingAddressItem.text = [NSString
@@ skipping 94 matching lines @@
 
 #pragma mark UICollectionViewDelegate
 
 - (void)collectionView:(UICollectionView*)collectionView
     didSelectItemAtIndexPath:(NSIndexPath*)indexPath {
   [super collectionView:collectionView didSelectItemAtIndexPath:indexPath];
 
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
   switch (item.type) {
+    case ItemTypeAcceptedMethods:
     case ItemTypeCardSummary:
     case ItemTypeSaveCard:
       break;
     case ItemTypeBillingAddress: {
       // TODO(crbug.com/602666): Display a list of billing addresses.
       break;
     }
     default:
       break;
   }
 }
 
 #pragma mark MDCCollectionViewStylingDelegate
 
 - (CGFloat)collectionView:(UICollectionView*)collectionView
     cellHeightAtIndexPath:(NSIndexPath*)indexPath {
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
   switch (item.type) {
     case ItemTypeBillingAddress:
       return MDCCellDefaultOneLineHeight;
+    case ItemTypeAcceptedMethods:
     case ItemTypeCardSummary:
     case ItemTypeSaveCard:
       return [MDCCollectionViewCell
           cr_preferredHeightForWidth:CGRectGetWidth(collectionView.bounds)
                              forItem:item];
     default:
       return
           [super collectionView:collectionView cellHeightAtIndexPath:indexPath];
   }
 }
 
 - (BOOL)collectionView:(UICollectionView*)collectionView
     hidesInkViewAtIndexPath:(NSIndexPath*)indexPath {
   NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
   switch (type) {
+    case ItemTypeAcceptedMethods:
     case ItemTypeCardSummary:
     case ItemTypeSaveCard:
       return YES;
     default:
       return [super collectionView:collectionView
            hidesInkViewAtIndexPath:indexPath];
   }
 }
 
+- (BOOL)collectionView:(UICollectionView*)collectionView
+    shouldHideItemBackgroundAtIndexPath:(NSIndexPath*)indexPath {
+  NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
+  switch (type) {
+    case ItemTypeAcceptedMethods:
+      return YES;
+    default:
+      return [super collectionView:collectionView
+          shouldHideItemBackgroundAtIndexPath:indexPath];
+  }
+}
+
 #pragma mark Switch Actions
 
 - (void)saveCardSwitchToggled:(UISwitch*)sender {
   _saveCreditCard = sender.isOn;
 }
 
 @end