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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OMNIBOX_BROWSER_VOICE_SUGGEST_PROVIDER_H_
#define COMPONENTS_OMNIBOX_BROWSER_VOICE_SUGGEST_PROVIDER_H_
#include <memory>
#include <string>
#include <vector>
#include "base/compiler_specific.h"
#include "base/memory/raw_ptr.h"
#include "components/omnibox/browser/autocomplete_enums.h"
#include "components/omnibox/browser/autocomplete_input.h"
#include "components/omnibox/browser/autocomplete_provider_client.h"
#include "components/omnibox/browser/base_search_provider.h"
#include "third_party/metrics_proto/omnibox_event.pb.h"
// Autocomplete provider serving Voice suggestions on Android.
class VoiceSuggestProvider : public BaseSearchProvider {
public:
explicit VoiceSuggestProvider(AutocompleteProviderClient* client);
void Start(const AutocompleteInput& input, bool minimal_changes) override;
void Stop(AutocompleteStopReason stop_reason) override;
// Adds voice suggestion to the list of reported AutocompleteMatches.
// The voice suggestion is next converted to a proper Search suggestion
// associated with user-selected search engine, with a relevance score
// computed from the match_score.
void AddVoiceSuggestion(std::u16string match_text, float match_score);
// Clear all cached voice matches.
void ClearCache();
private:
// BaseSearchProvider:
~VoiceSuggestProvider() override;
bool ShouldAppendExtraParams(
const SearchSuggestionParser::SuggestResult& result) const override;
void RecordDeletionResult(bool success) override;
// A list of voice matches and their confidence scores. The first element
// indicates how confident the voice recognition system is about the accuracy
// of the match, whereas the second element of the pair holds the match text
// itself.
// Multiple matches may hold the same confidence score and/or match text -
// the score will next be used to filter out low-quality matches, and compute
// the relevance score for matches.
// Duplicate voice matches will be deduplicated automatically to the higher
// ranked match.
std::vector<std::pair<float, std::u16string>> voice_matches_;
};
#endif // COMPONENTS_OMNIBOX_BROWSER_VOICE_SUGGEST_PROVIDER_H_
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