[Payment Request] Error message screen

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/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/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;
 
-NSString* const kPaymentRequestCollectionViewId =
-    @"kPaymentRequestCollectionViewId";
+NSString* const kPaymentRequestCollectionViewID =
+    @"kPaymentRequestCollectionViewID";
 
 namespace {
 
 const CGFloat kButtonEdgeInset = 9;
 const CGFloat kSeparatorEdgeInset = 14;
 
 typedef NS_ENUM(NSInteger, SectionIdentifier) {
   SectionIdentifierSummary = kSectionIdentifierEnumZero,
   SectionIdentifierShipping,
   SectionIdentifierPayment,
 
 };
 
 typedef NS_ENUM(NSInteger, ItemType) {
   ItemTypeSummaryPageInfo = kItemTypeEnumZero,
   ItemTypeSummaryTotal,
   ItemTypeShippingTitle,
   ItemTypeShippingAddress,
   ItemTypeAddShippingAddress,
   ItemTypeShippingOption,
   ItemTypeSelectShippingOption,
   ItemTypePaymentTitle,
   ItemTypePaymentMethod,
   ItemTypeAddPaymentMethod,
 };
 
 }  // namespace
 
-@interface PaymentRequestViewController () {
+@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;
 }
 
-// Called when the user presses the cancel button.
-- (void)onCancel;
-
-// Called when the user presses the confirm button.
-- (void)onConfirm;
-
 @end
 
 @implementation PaymentRequestViewController
 
 @synthesize pageFavicon = _pageFavicon;
 @synthesize pageTitle = _pageTitle;
 @synthesize pageHost = _pageHost;
 @synthesize delegate = _delegate;
 
 - (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest {
   DCHECK(paymentRequest);
   if ((self = [super initWithStyle:CollectionViewControllerStyleAppBar])) {
     [self setTitle:l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_TITLE)];
 
-    // Set up left (cancel) button.
+    // Set up leading (cancel) button.
     _cancelButton = [[UIBarButtonItem alloc]
         initWithTitle:l10n_util::GetNSString(
                           IDS_IOS_PAYMENT_REQUEST_CANCEL_BUTTON)
                 style:UIBarButtonItemStylePlain
                target:nil
                action:@selector(onCancel)];
     [_cancelButton setTitleTextAttributes:@{
       NSForegroundColorAttributeName : [UIColor lightGrayColor]
     }
                                  forState:UIControlStateDisabled];
     [_cancelButton
         setAccessibilityLabel:l10n_util::GetNSString(IDS_ACCNAME_CANCEL)];
     [self navigationItem].leftBarButtonItem = _cancelButton;
 
-    // Set up right (pay) button.
+    // Set up trailing (pay) button.
     _payButton = [[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 151 matching lines @@
         IDS_IOS_PAYMENT_REQUEST_ADD_SHIPPING_ADDRESS_BUTTON)
         uppercaseStringWithLocale:[NSLocale currentLocale]];
   }
   paymentMethodItem.accessibilityTraits |= UIAccessibilityTraitButton;
   [model addItem:paymentMethodItem
       toSectionWithIdentifier:SectionIdentifierPayment];
 }
 
 - (void)viewDidLoad {
   [super viewDidLoad];
-  self.collectionView.accessibilityIdentifier = kPaymentRequestCollectionViewId;
+  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
@@ skipping 176 matching lines @@
   NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
   if (type == ItemTypeSummaryTotal &&
       _paymentRequest->payment_details().display_items.empty()) {
     return YES;
   } else {
     return NO;
   }
 }
 
 @end