[Payments] Show what's missing for incomplete payment methods.

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 <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback_forward.h"
 #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/payments/content/payment_request_state.h"
 #include "components/payments/core/autofill_payment_instrument.h"
 #include "components/payments/core/payment_instrument.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/native_theme/native_theme.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/md_text_button.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/vector_icons.h"
 
 namespace payments {
 
 namespace {
@@ skipping 37 matching lines @@
         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(instrument_->label()));
-    card_info_container->AddChildView(
-        new views::Label(instrument_->sublabel()));
-    // TODO(anthonyvd): Add the "card is incomplete" label once the
-    // completedness logic is implemented.
+    if (!instrument_->label().empty())
+      card_info_container->AddChildView(new views::Label(instrument_->label()));
+    if (!instrument_->sublabel().empty()) {
+      card_info_container->AddChildView(
+          new views::Label(instrument_->sublabel()));
+    }
+    base::string16 missing_info;
+    if (!instrument_->IsCompleteForPayment(&missing_info)) {
+      std::unique_ptr<views::Label> missing_info_label =
+          base::MakeUnique<views::Label>(missing_info);
+      missing_info_label->SetFontList(
+          missing_info_label->GetDefaultFontList().DeriveWithSizeDelta(-1));
+      missing_info_label->SetEnabledColor(
+          missing_info_label->GetNativeTheme()->GetSystemColor(
+              ui::NativeTheme::kColorId_LinkEnabled));
+      card_info_container->AddChildView(missing_info_label.release());
+    }
+
     return card_info_container;
   }
 
   void SelectedStateChanged() override {
     if (selected()) {
       state()->SetSelectedInstrument(instrument_);
       dialog_->GoBack();
     }
   }
 
   bool CanBeSelected() const override {
     // If an instrument can't be selected, PerformSelectionFallback is called,
     // where the instrument can be made complete.
-    return instrument_->IsCompleteForPayment();
+    return instrument_->IsCompleteForPayment(/*missing_info=*/nullptr);
   }
 
   void PerformSelectionFallback() override {
     switch (instrument_->type()) {
       case PaymentInstrument::Type::AUTOFILL:
         // Since we are a list item, we only care about the on_edited callback.
         dialog_->ShowCreditCardEditor(
             /*on_edited=*/base::BindOnce(
                 &PaymentRequestState::SetSelectedInstrument,
                 base::Unretained(state()), instrument_),
@@ skipping 78 matching lines @@
                          base::Unretained(state()), /*selected=*/true),
           /*credit_card=*/nullptr);
       break;
     default:
       PaymentRequestSheetController::ButtonPressed(sender, event);
       break;
   }
 }
 
 }  // namespace payments