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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_INPUT_METHOD_SUGGESTIONS_SERVICE_CLIENT_H_
#define CHROME_BROWSER_ASH_INPUT_METHOD_SUGGESTIONS_SERVICE_CLIENT_H_
#include <vector>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "chrome/browser/ash/input_method/suggestions_source.h"
#include "chromeos/ash/services/ime/public/cpp/assistive_suggestions.h"
#include "chromeos/services/machine_learning/public/mojom/machine_learning_service.mojom.h"
#include "chromeos/services/machine_learning/public/mojom/text_suggester.mojom.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace ash {
namespace input_method {
// A client interface to the TextSuggestions service found in the ML service.
class SuggestionsServiceClient : public AsyncSuggestionsSource {
public:
SuggestionsServiceClient();
~SuggestionsServiceClient() override;
// AsyncSuggestionsSource overrides
void RequestSuggestions(
const std::string& preceding_text,
const ime::AssistiveSuggestionMode& suggestion_mode,
const std::vector<ime::DecoderCompletionCandidate>& completion_candidates,
RequestSuggestionsCallback callback) override;
bool IsAvailable() override;
private:
// Called once the text suggester model has been loaded and is (or is not)
// available for use.
void OnTextSuggesterLoaded(
chromeos::machine_learning::mojom::LoadModelResult result);
// Called when results are returned from the suggestions service
void OnSuggestionsReturned(
base::TimeTicks time_request_was_made,
RequestSuggestionsCallback callback,
ime::AssistiveSuggestionMode suggestion_mode_requested,
chromeos::machine_learning::mojom::TextSuggesterResultPtr result);
mojo::Remote<chromeos::machine_learning::mojom::TextSuggester>
text_suggester_;
bool text_suggester_loaded_ = false;
base::WeakPtrFactory<SuggestionsServiceClient> weak_ptr_factory_{this};
};
} // namespace input_method
} // namespace ash
#endif // CHROME_BROWSER_ASH_INPUT_METHOD_SUGGESTIONS_SERVICE_CLIENT_H_
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