ash/assistant/ui/dialog_plate/action_view.h

// Copyright 2018 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 ASH_ASSISTANT_UI_DIALOG_PLATE_ACTION_VIEW_H_
#define ASH_ASSISTANT_UI_DIALOG_PLATE_ACTION_VIEW_H_

#include "ash/assistant/model/assistant_interaction_model_observer.h"
#include "ash/assistant/ui/base/assistant_button.h"
#include "base/macros.h"

namespace ash {

class ActionView;
class AssistantController;
class BaseLogoView;

// A stateful view belonging to DialogPlate which indicates current user input
// modality and delivers notification of press events.
class ActionView : public AssistantButton,
                   public AssistantInteractionModelObserver {
 public:
  ActionView(views::ButtonListener* listener,
             AssistantController* assistant_controller);
  ~ActionView() override;

  // AssistantButton:
  const char* GetClassName() const override;
  gfx::Size CalculatePreferredSize() const override;
  int GetHeightForWidth(int width) const override;

  // AssistantInteractionModelObserver:
  void OnMicStateChanged(MicState mic_state) override;
  void OnSpeechLevelChanged(float speech_level_db) override;

 private:
  void InitLayout();

  // If |animate| is false, there is no exit animation of current state and
  // enter animation of the next state of the LogoView.
  void UpdateState(bool animate);

  AssistantController* const assistant_controller_;  // Owned by Shell.

  BaseLogoView* voice_action_view_;         // Owned by view hierarchy.

  // True when speech level goes above a threshold and sets LogoView in
  // kUserSpeaks state.
  bool is_user_speaking_ = false;

  DISALLOW_COPY_AND_ASSIGN(ActionView);
};

}  // namespace ash

#endif  // ASH_ASSISTANT_UI_DIALOG_PLATE_ACTION_VIEW_H_