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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 CHROME_BROWSER_ASH_APP_LIST_SEARCH_SEARCH_METRICS_MANAGER_H_
#define CHROME_BROWSER_ASH_APP_LIST_SEARCH_SEARCH_METRICS_MANAGER_H_
#include <string>
#include <vector>
#include "ash/public/cpp/app_list/app_list_notifier.h"
#include "base/scoped_observation.h"
#include "chrome/browser/ash/app_list/search/chrome_search_result.h"
#include "chrome/browser/ash/app_list/search/ranking/launch_data.h"
class Profile;
namespace app_list {
// Records launcher search backend metrics. This includes impression,
// abandonment, and launch information reported by the AppListNotifier.
class SearchMetricsManager : ash::AppListNotifier::Observer {
public:
using Result = ash::AppListNotifier::Result;
using Location = ash::AppListNotifier::Location;
// Represents the actions a user can take in the launcher. These values
// persist
// to logs. Entries should not be renumbered and numeric values should never
// be reused.
enum class Action {
kImpression = 0,
kLaunch = 1,
kAbandon = 2,
kIgnore = 3,
kMaxValue = kIgnore
};
SearchMetricsManager(Profile* profile, ash::AppListNotifier* notifier);
~SearchMetricsManager() override;
SearchMetricsManager(const SearchMetricsManager&) = delete;
SearchMetricsManager& operator=(const SearchMetricsManager&) = delete;
// ash::AppListNotifier::Observer:
void OnImpression(Location location,
const std::vector<Result>& results,
const std::u16string& query) override;
void OnAbandon(Location location,
const std::vector<Result>& results,
const std::u16string& query) override;
void OnLaunch(Location location,
const Result& launched,
const std::vector<Result>& shown,
const std::u16string& query) override;
void OnIgnore(Location location,
const std::vector<Result>& results,
const std::u16string& query) override;
void OnOpen(ash::AppListSearchResultType result_type,
const std::u16string& query);
void OnTrain(LaunchData& launch_data, const std::string& query);
void OnSearchResultsUpdated(const Scoring& scoring);
private:
base::ScopedObservation<ash::AppListNotifier, ash::AppListNotifier::Observer>
observation_{this};
// The ID of the most recently launched app. This is used for app list launch
// recording.
std::string last_launched_app_id_;
};
} // namespace app_list
#endif // CHROME_BROWSER_ASH_APP_LIST_SEARCH_SEARCH_METRICS_MANAGER_H_
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