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// Copyright 2014 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_PASSWORD_MANAGER_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_
#define COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_

#include <map>
#include <string>
#include <vector>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "components/autofill/content/common/autofill_agent.mojom.h"
#include "components/autofill/core/common/password_form_field_prediction_map.h"
#include "components/autofill/core/common/password_form_generation_data.h"
#include "components/password_manager/core/browser/password_autofill_manager.h"
#include "components/password_manager/core/browser/password_generation_manager.h"
#include "components/password_manager/core/browser/password_manager.h"
#include "components/password_manager/core/browser/password_manager_driver.h"
#include "mojo/public/cpp/bindings/associated_binding.h"

namespace autofill {
struct PasswordForm;
}

namespace content {
class NavigationHandle;
class RenderFrameHost;
}

namespace password_manager {
enum class BadMessageReason;

// There is one ContentPasswordManagerDriver per RenderFrameHost.
// The lifetime is managed by the ContentPasswordManagerDriverFactory.
class ContentPasswordManagerDriver : public PasswordManagerDriver {
 public:
  ContentPasswordManagerDriver(content::RenderFrameHost* render_frame_host,
                               PasswordManagerClient* client,
                               autofill::AutofillClient* autofill_client);
  ~ContentPasswordManagerDriver() override;

  // Gets the driver for |render_frame_host|.
  static ContentPasswordManagerDriver* GetForRenderFrameHost(
      content::RenderFrameHost* render_frame_host);

  // PasswordManagerDriver implementation.
  void FillPasswordForm(
      const autofill::PasswordFormFillData& form_data) override;
  void AllowPasswordGenerationForForm(
      const autofill::PasswordForm& form) override;
  void FormsEligibleForGenerationFound(
      const std::vector<autofill::PasswordFormGenerationData>& forms) override;
  void AutofillDataReceived(
      const std::map<autofill::FormData,
                     autofill::PasswordFormFieldPredictionMap>& predictions)
      override;
  void GeneratedPasswordAccepted(const base::string16& password) override;
  void FillSuggestion(const base::string16& username,
                      const base::string16& password) override;
  void FillIntoFocusedField(bool is_password,
                            const base::string16& credential,
                            base::OnceCallback<void(autofill::FillingStatus)>
                                compeleted_callback) override;
  void PreviewSuggestion(const base::string16& username,
                         const base::string16& password) override;
  void ShowInitialPasswordAccountSuggestions(
      const autofill::PasswordFormFillData& form_data) override;
  void ClearPreviewedForm() override;
  void ForceSavePassword() override;
  void GeneratePassword() override;
  PasswordGenerationManager* GetPasswordGenerationManager() override;
  PasswordManager* GetPasswordManager() override;
  PasswordAutofillManager* GetPasswordAutofillManager() override;
  void SendLoggingAvailability() override;
  void AllowToRunFormClassifier() override;
  autofill::AutofillDriver* GetAutofillDriver() override;
  bool IsMainFrame() const override;

  void DidNavigateFrame(content::NavigationHandle* navigation_handle);

 private:
  void OnFocusedPasswordFormFound(const autofill::PasswordForm& password_form);

  const autofill::mojom::AutofillAgentPtr& GetAutofillAgent();

  const autofill::mojom::PasswordAutofillAgentPtr& GetPasswordAutofillAgent();

  const autofill::mojom::PasswordGenerationAgentPtr&
  GetPasswordGenerationAgent();

  // Returns the next key to be used for PasswordFormFillData sent to
  // PasswordAutofillManager and PasswordAutofillAgent.
  int GetNextKey();

  content::RenderFrameHost* render_frame_host_;
  PasswordManagerClient* client_;
  PasswordGenerationManager password_generation_manager_;
  PasswordAutofillManager password_autofill_manager_;

  // Every instance of PasswordFormFillData created by |*this| and sent to
  // PasswordAutofillManager and PasswordAutofillAgent is given an ID, so that
  // the latter two classes can reference to the same instance without sending
  // it to each other over IPC. The counter below is used to generate new IDs.
  // The counter cycles over a limited range of values, see
  // https://crbug.com/846404#c5.
  int next_free_key_ = 0;

  // It should be filled in the constructor, since later the frame might be
  // detached and it would be impossible to check whether the frame is a main
  // frame.
  const bool is_main_frame_;

  autofill::mojom::PasswordAutofillAgentPtr password_autofill_agent_;

  autofill::mojom::PasswordGenerationAgentPtr password_gen_agent_;

  base::WeakPtrFactory<ContentPasswordManagerDriver> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(ContentPasswordManagerDriver);
};

}  // namespace password_manager

#endif  // COMPONENTS_PASSWORD_MANAGER_CONTENT_BROWSER_CONTENT_PASSWORD_MANAGER_DRIVER_H_