[Autofill] Credit Card Assist Infobar

components/autofill/core/browser/autofill_assistant.h

+// 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.
+
+#ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_ASSISTANT_H_
+#define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_ASSISTANT_H_
+
+#include <memory>
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "components/autofill/core/common/form_data.h"
+
+namespace autofill {
+
+class AutofillManager;
+class CreditCard;
+class FormStructure;
+
+// This class encompasses the triggering rules and the logic for the autofill
+// assisted filling mechanisms.
+class AutofillAssistant {
+ public:
+  explicit AutofillAssistant(AutofillManager* autofill_manager);
+  ~AutofillAssistant();
+
+  // Should be called at every page navigation to clear state.
+  void Reset();
+
+  // Returns whether a credit card assist can be shown. Will go through the
+  // forms in |form_structures| and extract the credit card form.
+  bool CanShowCreditCardAssist(
+      const std::vector<FormStructure*>& form_structures);
+
+  // Will show an assist infobar for the previously extracted form proposing to
+  // autofill it. Should only be called if CanShowCreditCardAssist() returned
+  // true.
+  void ShowAssistForCreditCard(const CreditCard& card);
+
+ private:
+  // Called by the infobar delegate when the user accepts the infobar.
+  void OnUserDidAcceptCreditCardFill(const CreditCard& card);
+
+  // Holds the FormData to be filled with a credit card.
+  std::unique_ptr<FormData> credit_card_form_data_;
+
+  // Weak reference to the AutofillManager that created and maintains this
+  // AutofillAssistant.
+  AutofillManager* autofill_manager_;
+
+  base::WeakPtrFactory<AutofillAssistant> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutofillAssistant);
+};
+
+}  // namespace autofill
+
+#endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_ASSISTANT_H_