[Payment Request] Error message screen

ios/chrome/browser/payments/payment_items_display_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_items_display_view_controller.h"
 
 #import "base/ios/weak_nsobject.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/payments/currency_formatter.h"
 #include "components/strings/grit/components_strings.h"
 #import "ios/chrome/browser/payments/cells/price_item.h"
+#import "ios/chrome/browser/payments/payment_items_display_view_controller_actions.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h"
 #import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
 #import "ios/chrome/browser/ui/icons/chrome_icon.h"
 #include "ios/chrome/browser/ui/rtl_geometry.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_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
 #include "ui/base/l10n/l10n_util.h"
 
-NSString* const kPaymentItemsDisplayCollectionViewId =
-    @"kPaymentItemsDisplayCollectionViewId";
-NSString* const kPaymentItemsDisplayItemId = @"kPaymentItemsDisplayItemId";
+NSString* const kPaymentItemsDisplayCollectionViewID =
+    @"kPaymentItemsDisplayCollectionViewID";
+NSString* const kPaymentItemsDisplayItemID = @"kPaymentItemsDisplayItemID";
 
 namespace {
 
 const CGFloat kButtonEdgeInset = 9;
 const CGFloat kSeparatorEdgeInset = 14;
 
 typedef NS_ENUM(NSInteger, SectionIdentifier) {
   SectionIdentifierPayment = kSectionIdentifierEnumZero,
 };
 
 typedef NS_ENUM(NSInteger, ItemType) {
   ItemTypePaymentItemTotal = kItemTypeEnumZero,
   ItemTypePaymentItem,  // This is a repeated item type.
 };
 
 }  // namespace
 
-@interface PaymentItemsDisplayViewController () {
+@interface PaymentItemsDisplayViewController ()<
+    PaymentItemsDisplayViewControllerActions> {
   base::WeakNSProtocol<id<PaymentItemsDisplayViewControllerDelegate>> _delegate;
   base::scoped_nsobject<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;
 }
 
-// Called when the user presses the return button.
-- (void)onReturn;
-
-// Called when the user presses the pay button.
-- (void)onConfirm;
-
 @end
 
 @implementation PaymentItemsDisplayViewController
 
 - (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest
                       payButtonEnabled:(BOOL)payButtonEnabled {
   DCHECK(paymentRequest);
   if ((self = [super initWithStyle:CollectionViewControllerStyleAppBar])) {
     [self setTitle:l10n_util::GetNSString(
                        IDS_IOS_PAYMENT_REQUEST_PAYMENT_ITEMS_TITLE)];
 
-    // Set up left (return) button.
+    // Set up leading (return) button.
     UIBarButtonItem* returnButton =
         [ChromeIcon templateBarButtonItemWithImage:[ChromeIcon backIcon]
                                             target:nil
                                             action:@selector(onReturn)];
     [returnButton
         setAccessibilityLabel:l10n_util::GetNSString(IDS_ACCNAME_BACK)];
     [self navigationItem].leftBarButtonItem = returnButton;
 
-    // Set up right (pay) button.
+    // Set up trailing (pay) button.
     _payButton.reset([[MDCFlatButton alloc] init]);
     [_payButton
         setTitle:l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_PAY_BUTTON)
         forState:UIControlStateNormal];
     [_payButton setBackgroundColor:[[MDCPalette cr_bluePalette] tint500]
                           forState:UIControlStateNormal];
     [_payButton setInkColor:[UIColor colorWithWhite:1 alpha:0.2]];
     [_payButton setBackgroundColor:[UIColor grayColor]
                           forState:UIControlStateDisabled];
     [_payButton addTarget:nil
@@ skipping 51 matching lines @@
 #pragma mark - CollectionViewController methods
 
 - (void)loadModel {
   [super loadModel];
   CollectionViewModel* model = self.collectionViewModel;
   [model addSectionWithIdentifier:SectionIdentifierPayment];
 
   // Add the total entry.
   PriceItem* totalItem =
       [[[PriceItem alloc] initWithType:ItemTypePaymentItemTotal] autorelease];
-  totalItem.accessibilityIdentifier = kPaymentItemsDisplayItemId;
+  totalItem.accessibilityIdentifier = kPaymentItemsDisplayItemID;
   totalItem.item =
       base::SysUTF16ToNSString(_paymentRequest->payment_details().total.label);
   payments::CurrencyFormatter* currencyFormatter =
       _paymentRequest->GetOrCreateCurrencyFormatter();
   totalItem.price = SysUTF16ToNSString(l10n_util::GetStringFUTF16(
       IDS_IOS_PAYMENT_REQUEST_PAYMENT_ITEMS_TOTAL_FORMAT,
       base::UTF8ToUTF16(currencyFormatter->formatted_currency_code()),
       currencyFormatter->Format(base::UTF16ToASCII(
           _paymentRequest->payment_details().total.amount.value))));
 
   [model addItem:totalItem toSectionWithIdentifier:SectionIdentifierPayment];
 
   // Add the line item entries.
   for (const auto& paymentItem :
        _paymentRequest->payment_details().display_items) {
     PriceItem* paymentItemItem =
         [[[PriceItem alloc] initWithType:ItemTypePaymentItem] autorelease];
-    paymentItemItem.accessibilityIdentifier = kPaymentItemsDisplayItemId;
+    paymentItemItem.accessibilityIdentifier = kPaymentItemsDisplayItemID;
     paymentItemItem.item = base::SysUTF16ToNSString(paymentItem.label);
     payments::CurrencyFormatter* currencyFormatter =
         _paymentRequest->GetOrCreateCurrencyFormatter();
     paymentItemItem.price = SysUTF16ToNSString(currencyFormatter->Format(
         base::UTF16ToASCII(paymentItem.amount.value)));
     [model addItem:paymentItemItem
         toSectionWithIdentifier:SectionIdentifierPayment];
   }
 }
 
 - (void)viewDidLoad {
   [super viewDidLoad];
   self.collectionView.accessibilityIdentifier =
-      kPaymentItemsDisplayCollectionViewId;
+      kPaymentItemsDisplayCollectionViewID;
 
   // Customize collection view settings.
   self.styler.cellStyle = MDCCollectionViewCellStyleCard;
   self.styler.separatorInset =
       UIEdgeInsetsMake(0, kSeparatorEdgeInset, 0, kSeparatorEdgeInset);
 }
 
 #pragma mark UICollectionViewDataSource
 - (UICollectionViewCell*)collectionView:(UICollectionView*)collectionView
                  cellForItemAtIndexPath:(nonnull NSIndexPath*)indexPath {
@@ skipping 33 matching lines @@
 #pragma mark MDCCollectionViewStylingDelegate
 
 // There are no effects from touching the payment items so there should not be
 // an ink ripple.
 - (BOOL)collectionView:(UICollectionView*)collectionView
     hidesInkViewAtIndexPath:(NSIndexPath*)indexPath {
   return YES;
 }
 
 @end