[Web Payments] Add a mechanism to build item lists in the PR dialog.

chrome/browser/ui/views/payments/payment_method_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/payment_method_view_controller.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
 #include "chrome/browser/ui/views/payments/payment_request_dialog_view_ids.h"
+#include "chrome/browser/ui/views/payments/payment_request_row_view.h"
 #include "chrome/browser/ui/views/payments/payment_request_views_util.h"
 #include "chrome/grit/generated_resources.h"
+#include "components/autofill/core/browser/autofill_type.h"
+#include "components/autofill/core/browser/credit_card.h"
 #include "components/payments/payment_request.h"
 #include "components/strings/grit/components_strings.h"
+#include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/paint_vector_icon.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/md_text_button.h"
-#include "ui/views/layout/fill_layout.h"
+#include "ui/views/layout/box_layout.h"
+#include "ui/views/layout/grid_layout.h"
+#include "ui/views/vector_icons.h"
+
 
 namespace payments {
 
 namespace {
 
 constexpr int kFirstTagValue = static_cast<int>(
     payments::PaymentRequestCommonTags::PAYMENT_REQUEST_COMMON_TAG_MAX);
 
 enum class PaymentMethodViewControllerTags : int {
   // The tag for the button that triggers the "add card" flow. Starts at
   // |kFirstTagValue| not to conflict with tags common to all views.
   ADD_CREDIT_CARD_BUTTON = kFirstTagValue,
 };
 
+class PaymentMethodListItem : public payments::PaymentRequestItemList::Item,
+                              public views::ButtonListener {
+ public:
+  explicit PaymentMethodListItem(autofill::CreditCard* card) : card_(card) {}

[please use gerrit instead, 2017/02/14 00:29:14]

// Does not take ownership of |card|, which  should not be null and should
outlive this object.

(Is that right?)

[anthonyvd, 2017/02/22 20:15:21]

Yep, done.

+  ~PaymentMethodListItem() override {}
+
+ private:
+  std::unique_ptr<views::View> CreateItemView() override {

[please use gerrit instead, 2017/02/14 00:29:14]

// payments::PaymentRequestItemList::Item implementation.

[anthonyvd, 2017/02/22 20:15:21]

Done.

+    std::unique_ptr<PaymentRequestRowView> row =
+        base::MakeUnique<PaymentRequestRowView>(this);
+    views::GridLayout* layout = new views::GridLayout(row.get());
+    layout->SetInsets(kPaymentRequestRowVerticalInsets,
+                      kPaymentRequestRowHorizontalInsets,
+                      kPaymentRequestRowVerticalInsets,
+                      kPaymentRequestRowHorizontalInsets);
+    row->SetLayoutManager(layout);
+    views::ColumnSet* columns = layout->AddColumnSet(0);
+
+    // A column for the masked number and name on card
+    columns->AddColumn(views::GridLayout::LEADING, views::GridLayout::CENTER,
+                       0, views::GridLayout::USE_PREF, 0, 0);
+
+    // A padding column that resizes to take up the empty space between the
+    // leading and trailing parts.
+    columns->AddPaddingColumn(1, 0);
+
+    // A column for the checkmark when the row is selected.
+    columns->AddColumn(views::GridLayout::TRAILING, views::GridLayout::CENTER,
+                       0, views::GridLayout::USE_PREF, 0, 0);
+
+    // A column for the card icon
+    columns->AddColumn(views::GridLayout::TRAILING, views::GridLayout::CENTER,
+                       0, views::GridLayout::USE_PREF, 0, 0);
+
+    // A column for the edit button
+    columns->AddColumn(views::GridLayout::TRAILING, views::GridLayout::CENTER,
+                       0, views::GridLayout::USE_PREF, 0, 0);
+
+    layout->StartRow(0, 0);
+    std::unique_ptr<views::View> card_info_container =
+        base::MakeUnique<views::View>();
+    card_info_container->set_can_process_events_within_subtree(false);
+
+    std::unique_ptr<views::BoxLayout> box_layout =
+        base::MakeUnique<views::BoxLayout>(views::BoxLayout::kVertical,
+                                           0,
+                                           kPaymentRequestRowVerticalInsets,
+                                           0);
+    box_layout->set_cross_axis_alignment(
+        views::BoxLayout::CROSS_AXIS_ALIGNMENT_START);
+    card_info_container->SetLayoutManager(box_layout.release());
+
+    card_info_container->AddChildView(
+        new views::Label(card_->TypeAndLastFourDigits()));
+    card_info_container->AddChildView(new views::Label(
+        card_->GetInfo(autofill::AutofillType(autofill::CREDIT_CARD_NAME_FULL),
+                       g_browser_process->GetApplicationLocale())));
+    layout->AddView(card_info_container.release());
+
+    std::unique_ptr<views::ImageView> checkmark =
+        base::MakeUnique<views::ImageView>();
+    checkmark->set_interactive(false);
+    checkmark->SetImage(
+        gfx::CreateVectorIcon(views::kMenuCheckIcon, 0xFF609265));
+    layout->AddView(checkmark.release());
+
+    layout->AddView(CreateCreditCardIconView(card_).release());

[please use gerrit instead, 2017/02/14 00:29:14]

Great to see use of std::uniqiue_ptr and .release(). This makes memory
management more reliable and easy to inspect.

[anthonyvd, 2017/02/22 20:15:21]

Yeah I'm glad we agreed on just using unique_ptr everywhere even when it's just
to release() it in AddView. Makes things much clearer.

+
+    return std::move(row);
+  }
+
+  // views::ButtonListener:
+  void ButtonPressed(views::Button* sender, const ui::Event& event) override {
+

[please use gerrit instead, 2017/02/14 00:29:14]

Remove extra line.

[anthonyvd, 2017/02/22 20:15:21]

Done.

+  }
+
+  autofill::CreditCard* card_;
+
+  DISALLOW_COPY_AND_ASSIGN(PaymentMethodListItem);
+};
+
 }  // namespace
 
 PaymentMethodViewController::PaymentMethodViewController(
     PaymentRequest* request,
     PaymentRequestDialogView* dialog)
-    : PaymentRequestSheetController(request, dialog) {}
+    : PaymentRequestSheetController(request, dialog) {
+  std::vector<autofill::CreditCard*> available_cards = request->credit_cards();

[please use gerrit instead, 2017/02/14 00:29:14]

This makes a copy of the vector, which is expensive. Either use const-ref or
call request->credit_cards() directly from the for loop.

[anthonyvd, 2017/02/22 20:15:21]

Good catch, done! (Although I would hope that the compiler be eliding the copy
in practice :) )

+
+  for (autofill::CreditCard* card : available_cards) {
+    payment_method_list_.AddItem(base::MakeUnique<PaymentMethodListItem>(card));
+  }
+}
 
 PaymentMethodViewController::~PaymentMethodViewController() {}
 
 std::unique_ptr<views::View> PaymentMethodViewController::CreateView() {
-  std::unique_ptr<views::View> content_view = base::MakeUnique<views::View>();
+  return CreatePaymentView(CreateSheetHeaderView(
+          true,
+          l10n_util::GetStringUTF16(
+              IDS_PAYMENT_REQUEST_PAYMENT_METHOD_SECTION_NAME),
+          this),
+      payment_method_list_.CreateListView());
+}
 
-  views::FillLayout* layout = new views::FillLayout();
-  content_view->SetLayoutManager(layout);
+std::unique_ptr<views::View> PaymentMethodViewController::CreateExtraView() {
+  std::unique_ptr<views::View> extra_view = base::MakeUnique<views::View>();
 
-  // Create the "Add a card" button.
+  extra_view->SetLayoutManager(new views::BoxLayout(
+      views::BoxLayout::kHorizontal,
+      kPaymentRequestRowHorizontalInsets,
+      kPaymentRequestRowVerticalInsets,
+      kPaymentRequestButtonSpacing));
+
   views::LabelButton* button = views::MdTextButton::CreateSecondaryUiButton(
       this, l10n_util::GetStringUTF16(IDS_AUTOFILL_ADD_CREDITCARD_CAPTION));
   button->set_tag(static_cast<int>(
       PaymentMethodViewControllerTags::ADD_CREDIT_CARD_BUTTON));
   button->set_id(
       static_cast<int>(DialogViewID::PAYMENT_METHOD_ADD_CARD_BUTTON));
-  content_view->AddChildView(button);
+  extra_view->AddChildView(button);
 
-  return CreatePaymentView(CreateSheetHeaderView(
-          true,
-          l10n_util::GetStringUTF16(
-              IDS_PAYMENT_REQUEST_PAYMENT_METHOD_SECTION_NAME),
-          this),
-      std::move(content_view));
+  return extra_view;
 }
 
 void PaymentMethodViewController::ButtonPressed(views::Button* sender,
                                                 const ui::Event& event) {
   switch (sender->tag()) {
     case static_cast<int>(
         PaymentMethodViewControllerTags::ADD_CREDIT_CARD_BUTTON):
       dialog()->ShowCreditCardEditor();
       break;
     default:
       PaymentRequestSheetController::ButtonPressed(sender, event);
       break;
   }
 }
 
 }  // namespace payments