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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.
#include "chrome/browser/ash/input_method/suggestions_collector.h"
#include "base/functional/callback.h"
#include "chromeos/ash/services/ime/public/cpp/assistive_suggestions.h"
#include "chromeos/ash/services/ime/public/mojom/input_engine.mojom.h"
namespace ash {
namespace input_method {
namespace {
using ime::AssistiveSuggestion;
using ime::AssistiveSuggestionMode;
std::vector<AssistiveSuggestion> CombineResults(
const std::vector<AssistiveSuggestion>& first,
const std::vector<AssistiveSuggestion>& second) {
std::vector<AssistiveSuggestion> combined;
combined.reserve(first.size() + second.size());
combined.insert(combined.end(), first.begin(), first.end());
combined.insert(combined.end(), second.begin(), second.end());
return combined;
}
} // namespace
SuggestionsCollector::SuggestionsCollector(
SuggestionsSource* assistive_suggester,
std::unique_ptr<AsyncSuggestionsSource> suggestions_service_client)
: assistive_suggester_(assistive_suggester),
suggestions_service_client_(std::move(suggestions_service_client)) {}
SuggestionsCollector::~SuggestionsCollector() = default;
void SuggestionsCollector::GatherSuggestions(
ime::mojom::SuggestionsRequestPtr request,
GatherSuggestionsCallback callback) {
std::vector<AssistiveSuggestion> assistive_suggestions =
assistive_suggester_->GetSuggestions();
if (!suggestions_service_client_->IsAvailable()) {
auto response = ime::mojom::SuggestionsResponse::New(
/*candidates=*/assistive_suggestions);
std::move(callback).Run(std::move(response));
return;
}
suggestions_service_client_->RequestSuggestions(
request->text, request->mode, request->completion_candidates,
base::BindOnce(&SuggestionsCollector::OnSuggestionsGathered,
base::Unretained(this), std::move(callback),
assistive_suggestions));
}
void SuggestionsCollector::OnSuggestionsGathered(
GatherSuggestionsCallback callback,
const std::vector<AssistiveSuggestion>& assistive_suggestions,
const std::vector<AssistiveSuggestion>& system_suggestions) {
auto response = ime::mojom::SuggestionsResponse::New(
/*candidates=*/CombineResults(assistive_suggestions, system_suggestions));
std::move(callback).Run(std::move(response));
}
} // namespace input_method
} // namespace ash
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