[Payment Request] Error message screen

ios/chrome/browser/payments/payment_request_coordinator.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_coordinator.h"
 
 #include <unordered_set>
 #include <vector>
 
 #include "base/memory/ptr_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/core/browser/autofill_client.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/payments/full_card_request.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/autofill/core/browser/ui/card_unmask_prompt_controller_impl.h"
+#include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/payments/payment_request.h"
 #include "ios/chrome/browser/payments/payment_request_util.h"
 #include "ios/chrome/browser/ui/autofill/card_unmask_prompt_view_bridge.h"
+#include "ui/base/l10n/l10n_util.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 // The unmask prompt UI for Payment Request.
 class PRCardUnmaskPromptViewBridge
     : public autofill::CardUnmaskPromptViewBridge {
  public:
   explicit PRCardUnmaskPromptViewBridge(
@@ skipping 75 matching lines @@
   __weak PaymentRequestCoordinator* owner_;
   __weak UIViewController* base_view_controller_;
   autofill::CardUnmaskPromptControllerImpl unmask_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(FullCardRequester);
 };
 
 @implementation PaymentRequestCoordinator {
   UINavigationController* _navigationController;
   PaymentRequestViewController* _viewController;
+  PaymentRequestErrorCoordinator* _errorCoordinator;
   PaymentItemsDisplayCoordinator* _itemsDisplayCoordinator;
   ShippingAddressSelectionCoordinator* _shippingAddressSelectionCoordinator;
   ShippingOptionSelectionCoordinator* _shippingOptionSelectionCoordinator;
   PaymentMethodSelectionCoordinator* _methodSelectionCoordinator;
 
   // Receiver of the full credit card details. Also displays the unmask prompt
   // UI.
   std::unique_ptr<FullCardRequester> _fullCardRequester;
 
   // The selected shipping address, pending approval from the page.
   autofill::AutofillProfile* _pendingShippingAddress;
 }
 
 @synthesize paymentRequest = _paymentRequest;
 @synthesize autofillManager = _autofillManager;
 @synthesize browserState = _browserState;
 @synthesize pageFavicon = _pageFavicon;
 @synthesize pageTitle = _pageTitle;
 @synthesize pageHost = _pageHost;
 @synthesize delegate = _delegate;
 
-- (instancetype)initWithBaseViewController:(UIViewController*)viewController {
-  return [super initWithBaseViewController:viewController];
-}
-
 - (void)start {
   _viewController = [[PaymentRequestViewController alloc]
       initWithPaymentRequest:_paymentRequest];
   [_viewController setPageFavicon:_pageFavicon];
   [_viewController setPageTitle:_pageTitle];
   [_viewController setPageHost:_pageHost];
   [_viewController setDelegate:self];
   [_viewController loadModel];
 
   _navigationController = [[UINavigationController alloc]
       initWithRootViewController:_viewController];
   [_navigationController setNavigationBarHidden:YES];
 
   [[self baseViewController] presentViewController:_navigationController
                                           animated:YES
                                         completion:nil];
 }
 
 - (void)stop {
   [[_navigationController presentingViewController]
       dismissViewControllerAnimated:YES
                          completion:nil];
   _itemsDisplayCoordinator = nil;
   _shippingAddressSelectionCoordinator = nil;
   _shippingOptionSelectionCoordinator = nil;
   _methodSelectionCoordinator = nil;
+  _errorCoordinator = nil;
+  _viewController = nil;
   _navigationController = nil;
-  _viewController = nil;
 }
 
 - (void)sendPaymentResponse {
   DCHECK(_paymentRequest->selected_credit_card());
   autofill::CreditCard* card = _paymentRequest->selected_credit_card();
   _fullCardRequester = base::MakeUnique<FullCardRequester>(
       self, _navigationController, _browserState);
   _fullCardRequester->GetFullCard(card, _autofillManager);
 }
 
@@ skipping 64 matching lines @@
       // view. The updated selection is already reflected in |_paymentRequest|.
       [_viewController updateSelectedShippingOptionUI];
 
       // Dismiss the shipping option selection view.
       [_shippingOptionSelectionCoordinator stop];
       _shippingOptionSelectionCoordinator = nil;
     }
   }
 }
 
+- (void)displayErrorWithCallback:(ProceduralBlock)callback {
+  _errorCoordinator = [[PaymentRequestErrorCoordinator alloc]
+      initWithBaseViewController:_navigationController];
+  [_errorCoordinator setCallback:callback];
+  [_errorCoordinator setDelegate:self];
+
+  [_errorCoordinator start];
+}
+
 #pragma mark - PaymentRequestViewControllerDelegate
 
 - (void)paymentRequestViewControllerDidCancel:
     (PaymentRequestViewController*)controller {
   [_delegate paymentRequestCoordinatorDidCancel:self];
 }
 
 - (void)paymentRequestViewControllerDidConfirm:
     (PaymentRequestViewController*)controller {
   [self sendPaymentResponse];
@@ skipping 34 matching lines @@
 - (void)paymentRequestViewControllerDidSelectPaymentMethodItem:
     (PaymentRequestViewController*)controller {
   _methodSelectionCoordinator = [[PaymentMethodSelectionCoordinator alloc]
       initWithBaseViewController:_viewController];
   [_methodSelectionCoordinator setPaymentRequest:_paymentRequest];
   [_methodSelectionCoordinator setDelegate:self];
 
   [_methodSelectionCoordinator start];
 }
 
+#pragma mark - PaymentRequestErrorCoordinatorDelegate
+
+- (void)paymentRequestErrorCoordinatorDidDismiss:
+    (PaymentRequestErrorCoordinator*)coordinator {
+  ProceduralBlock callback = coordinator.callback;
+
+  [_errorCoordinator stop];
+  _errorCoordinator = nil;
+
+  if (callback)
+    callback();
+}
+
 #pragma mark - PaymentItemsDisplayCoordinatorDelegate
 
 - (void)paymentItemsDisplayCoordinatorDidReturn:
     (PaymentItemsDisplayCoordinator*)coordinator {
   // Clear the 'Updated' label on the payment summary item, if there is one.
   [_viewController updatePaymentSummaryWithTotalValueChanged:NO];
 
   [_itemsDisplayCoordinator stop];
   _itemsDisplayCoordinator = nil;
 }
@@ skipping 63 matching lines @@
 - (void)paymentMethodSelectionCoordinatorDidReturn:
     (PaymentMethodSelectionCoordinator*)coordinator {
   // Clear the 'Updated' label on the payment summary item, if there is one.
   [_viewController updatePaymentSummaryWithTotalValueChanged:NO];
 
   [_methodSelectionCoordinator stop];
   _methodSelectionCoordinator = nil;
 }
 
 @end