[Web Payments] Implement item selection in lists.

chrome/browser/ui/views/payments/shipping_option_view_controller.cc

 // 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.
 
 #include "chrome/browser/ui/views/payments/shipping_option_view_controller.h"
 
+#include "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
 #include "chrome/browser/ui/views/payments/payment_request_views_util.h"
 #include "components/payments/content/payment_request_spec.h"
 #include "components/payments/content/payment_request_state.h"
 
 namespace payments {
 
 namespace {
 
 class ShippingOptionItem : public PaymentRequestItemList::Item {
  public:
   ShippingOptionItem(payments::mojom::PaymentShippingOption* shipping_option,
                      PaymentRequestSpec* spec,
                      PaymentRequestState* state,
                      PaymentRequestItemList* parent_list,
+                     PaymentRequestDialogView* dialog,
                      bool selected)
       : PaymentRequestItemList::Item(spec, state, parent_list, selected),
-        shipping_option_(shipping_option) {}
+        shipping_option_(shipping_option),
+        dialog_(dialog) {}
   ~ShippingOptionItem() override {}
 
  private:
   // payments::PaymentRequestItemList::Item:
   std::unique_ptr<views::View> CreateContentView() override {
     return CreateShippingOptionLabel(
         shipping_option_,
         spec()->GetFormattedCurrencyAmount(shipping_option_->amount->value));
   }
 
-  void SelectedStateChanged() override {}
+  void SelectedStateChanged() override {
+    if (selected()) {
+      state()->SetSelectedShippingOption(shipping_option_);
+      dialog_->GoBack();
+    }
+  }
 
   bool CanBeSelected() const override {
     // Shipping options are vetted by the website; they're all OK to select.
     return true;
   }
 
   void PerformSelectionFallback() override {
     // Since CanBeSelected() is always true, this should never be called.
     NOTREACHED();
   }
 
   mojom::PaymentShippingOption* shipping_option_;
+  PaymentRequestDialogView* dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(ShippingOptionItem);
 };
 
 }  // namespace
 
 ShippingOptionViewController::ShippingOptionViewController(
     PaymentRequestSpec* spec,
     PaymentRequestState* state,
     PaymentRequestDialogView* dialog)
     : PaymentRequestSheetController(spec, state, dialog) {
   for (const auto& option : spec->details().shipping_options) {
     shipping_option_list_.AddItem(base::MakeUnique<ShippingOptionItem>(
-        option.get(), spec, state, &shipping_option_list_,
+        option.get(), spec, state, &shipping_option_list_, dialog,
         option.get() == state->selected_shipping_option()));
   }
 }
 
 ShippingOptionViewController::~ShippingOptionViewController() {}
 
 std::unique_ptr<views::View> ShippingOptionViewController::CreateView() {
   std::unique_ptr<views::View> list_view =
       shipping_option_list_.CreateListView();
   return CreatePaymentView(
       CreateSheetHeaderView(
           true, GetShippingOptionSectionString(spec()->options().shipping_type),
           this),
       std::move(list_view));
 }
 
 std::unique_ptr<views::View>
 ShippingOptionViewController::CreateExtraFooterView() {
   return nullptr;
 }
 
 }  // namespace payments