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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_ASSISTANT_MODEL_ASSISTANT_INTERACTION_MODEL_OBSERVER_H_
#define ASH_ASSISTANT_MODEL_ASSISTANT_INTERACTION_MODEL_OBSERVER_H_
#include "base/component_export.h"
#include "base/memory/scoped_refptr.h"
#include "base/observer_list_types.h"
namespace ash {
class AssistantQuery;
class AssistantResponse;
enum class InputModality;
enum class InteractionState;
enum class MicState;
// A checked observer which receives notification of changes to an Assistant
// interaction.
class COMPONENT_EXPORT(ASSISTANT_MODEL) AssistantInteractionModelObserver
: public base::CheckedObserver {
public:
AssistantInteractionModelObserver(const AssistantInteractionModelObserver&) =
delete;
AssistantInteractionModelObserver& operator=(
const AssistantInteractionModelObserver&) = delete;
// Invoked when the interaction state is changed.
virtual void OnInteractionStateChanged(InteractionState interaction_state) {}
// Invoked when the input modality associated with the interaction is changed.
virtual void OnInputModalityChanged(InputModality input_modality) {}
// Invoked when the mic state associated with the interaction is changed.
virtual void OnMicStateChanged(MicState mic_state) {}
// Invoked when the committed query associated with the interaction is
// changed.
virtual void OnCommittedQueryChanged(const AssistantQuery& committed_query) {}
// Invoked when the committed query associated with the interaction is
// cleared.
virtual void OnCommittedQueryCleared() {}
// Invoked when the pending query associated with the interaction is changed.
virtual void OnPendingQueryChanged(const AssistantQuery& pending_query) {}
// Invoked when the pending query associated with the interaction is cleared.
// |due_to_commit| is true if called from |CommitPendingQuery()|.
virtual void OnPendingQueryCleared(bool due_to_commit) {}
// Invoked when the response associated with the interaction is changed.
virtual void OnResponseChanged(
const scoped_refptr<AssistantResponse>& response) {}
// Invoked when the response associated with the interaction is cleared.
virtual void OnResponseCleared() {}
// Invoked when the speech level is changed.
virtual void OnSpeechLevelChanged(float speech_level_db) {}
protected:
AssistantInteractionModelObserver() = default;
~AssistantInteractionModelObserver() override = default;
};
} // namespace ash
#endif // ASH_ASSISTANT_MODEL_ASSISTANT_INTERACTION_MODEL_OBSERVER_H_
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