[Payments] Add combobox support to editors.

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

Index: chrome/browser/ui/views/payments/credit_card_editor_view_controller.cc
diff --git a/chrome/browser/ui/views/payments/credit_card_editor_view_controller.cc b/chrome/browser/ui/views/payments/credit_card_editor_view_controller.cc
index 8eb09d303fe88bf79f8c77b0b983ae4f5c37d5db..92d93b78474ce3429c4b568b5c03002ab07bcce4 100644
--- a/chrome/browser/ui/views/payments/credit_card_editor_view_controller.cc
+++ b/chrome/browser/ui/views/payments/credit_card_editor_view_controller.cc
@@ -8,13 +8,17 @@
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/string16.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/time/time.h"
 #include "chrome/browser/ui/views/payments/payment_request_dialog_view.h"
+#include "chrome/browser/ui/views/payments/validating_textfield.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/autofill/core/browser/field_types.h"
 #include "components/autofill/core/browser/validation.h"
+#include "components/autofill/core/common/autofill_clock.h"
 #include "components/autofill/core/common/autofill_constants.h"
 #include "components/payments/payment_request.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -22,10 +26,54 @@
 
 namespace payments {
 
+namespace {
+
+// Number of years (including the current one) to be shown in the expiration
+// year dropdown.
+const size_t kNumberOfExpirationYears = 10u;
+
+// Returns the items that are in the expiration month dropdown.
+std::vector<base::string16> GetExpirationMonthItems() {
+  std::vector<base::string16> months;
+  months.reserve(12);
+
+  base::Time::Exploded now_exploded;
+  autofill::AutofillClock::Now().LocalExplode(&now_exploded);
+  int wrapped = 0;
+  for (int i = 0; i < 12; i++) {
+    int month = (now_exploded.month + i + wrapped) % 13;
+    if (month == 0) {
+      month = 1;
+      wrapped = 1;
+    }
+    months.push_back(base::UTF8ToUTF16(base::StringPrintf("%02d", month)));
+  }
+  return months;
+}
+
+// Returns the items that are in the expiration year dropdown.
+std::vector<base::string16> GetExpirationYearItems() {
+  std::vector<base::string16> years;
+  years.reserve(kNumberOfExpirationYears);
+
+  base::Time::Exploded now_exploded;
+  autofill::AutofillClock::Now().LocalExplode(&now_exploded);
+  for (size_t i = 0u; i < kNumberOfExpirationYears; i++) {
+    years.push_back(base::UTF8ToUTF16(std::to_string(now_exploded.year + i)));
+  }
+  return years;
+}
+
+}  // namespace
+
 CreditCardEditorViewController::CreditCardEditorViewController(
     PaymentRequest* request,
     PaymentRequestDialogView* dialog)
-    : EditorViewController(request, dialog) {}
+    : EditorViewController(request, dialog) {
+  exp_month_model_.reset(
+      new ui::SimpleComboboxModel(GetExpirationMonthItems()));
+  exp_year_model_.reset(new ui::SimpleComboboxModel(GetExpirationYearItems()));
+}
 
 CreditCardEditorViewController::~CreditCardEditorViewController() {}
 
@@ -37,9 +85,14 @@ std::vector<EditorField> CreditCardEditorViewController::GetFieldDefinitions() {
       {autofill::CREDIT_CARD_NUMBER,
        l10n_util::GetStringUTF16(IDS_AUTOFILL_FIELD_LABEL_CREDIT_CARD_NUMBER),
        EditorField::LengthHint::HINT_LONG, true},
-      {autofill::CREDIT_CARD_EXP_DATE_2_DIGIT_YEAR,
-       l10n_util::GetStringUTF16(IDS_AUTOFILL_FIELD_LABEL_EXPIRATION_DATE),
-       EditorField::LengthHint::HINT_SHORT, true}};
+      {autofill::CREDIT_CARD_EXP_MONTH,
+       l10n_util::GetStringUTF16(IDS_AUTOFILL_FIELD_LABEL_EXPIRATION_MONTH),
+       EditorField::LengthHint::HINT_SHORT, true,
+       EditorField::ControlType::COMBOBOX},
+      {autofill::CREDIT_CARD_EXP_4_DIGIT_YEAR,
+       l10n_util::GetStringUTF16(IDS_AUTOFILL_FIELD_LABEL_EXPIRATION_YEAR),
+       EditorField::LengthHint::HINT_SHORT, true,
+       EditorField::ControlType::COMBOBOX}};
 }
 
 bool CreditCardEditorViewController::ValidateModelAndSave() {
@@ -53,7 +106,7 @@ bool CreditCardEditorViewController::ValidateModelAndSave() {
       return false;
 
     credit_card.SetRawInfo(field.second.type, field.first->text());
-  }
+  }  // TODO add combobox values!
 
   // TODO(mathp): Display global error message.
   if (!credit_card.IsValid())
@@ -65,25 +118,49 @@ bool CreditCardEditorViewController::ValidateModelAndSave() {
   return true;
 }
 
-std::unique_ptr<ValidatingTextfield::Delegate>
+std::unique_ptr<ValidationDelegate>
 CreditCardEditorViewController::CreateValidationDelegate(
     const EditorField& field) {
-  return base::MakeUnique<CreditCardEditorViewController::ValidationDelegate>(
-      field);
+  return base::MakeUnique<
+      CreditCardEditorViewController::CreditCardValidationDelegate>(field);
+}
+
+ui::ComboboxModel* CreditCardEditorViewController::GetComboboxModelForType(
+    const autofill::ServerFieldType& type) {
+  switch (type) {
+    case autofill::CREDIT_CARD_EXP_MONTH:
+      return exp_month_model_.get();
+    case autofill::CREDIT_CARD_EXP_4_DIGIT_YEAR:
+      return exp_year_model_.get();
+    default:
+      NOTREACHED();
+      break;
+  }
+  return nullptr;
 }
 
-CreditCardEditorViewController::ValidationDelegate::ValidationDelegate(
-    const EditorField& field)
+CreditCardEditorViewController::CreditCardValidationDelegate::
+    CreditCardValidationDelegate(const EditorField& field)
     : field_(field) {}
-CreditCardEditorViewController::ValidationDelegate::~ValidationDelegate() {}
+CreditCardEditorViewController::CreditCardValidationDelegate::
+    ~CreditCardValidationDelegate() {}
+
+bool CreditCardEditorViewController::CreditCardValidationDelegate::
+    ValidateTextfield(views::Textfield* textfield) {
+  return ValidateValue(textfield->text());
+}
+
+bool CreditCardEditorViewController::CreditCardValidationDelegate::
+    ValidateCombobox(views::Combobox* combobox) {
+  return ValidateValue(combobox->GetTextForRow(combobox->selected_index()));
+}
 
-bool CreditCardEditorViewController::ValidationDelegate::ValidateTextfield(
-    views::Textfield* textfield) {
-  if (!textfield->text().empty()) {
+bool CreditCardEditorViewController::CreditCardValidationDelegate::
+    ValidateValue(const base::string16& value) {
+  if (!value.empty()) {
     base::string16 error_message;
     // TODO(mathp): Display |error_message| around |textfield|.
-    return autofill::IsValidForType(textfield->text(), field_.type,
-                                    &error_message);
+    return autofill::IsValidForType(value, field_.type, &error_message);
   }
 
   // TODO(mathp): Display "required" error if applicable.