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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_UI_WEBUI_ASH_SETTINGS_SEARCH_SEARCH_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_ASH_SETTINGS_SEARCH_SEARCH_HANDLER_H_
#include <optional>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/webui/ash/settings/search/mojom/search.mojom.h"
#include "chrome/browser/ui/webui/ash/settings/search/search_tag_registry.h"
#include "chromeos/ash/components/local_search_service/public/cpp/local_search_service_proxy.h"
#include "chromeos/ash/components/local_search_service/public/mojom/index.mojom.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/bindings/remote_set.h"
namespace ash::settings {
class Hierarchy;
class OsSettingsSections;
struct SearchConcept;
// Handles search queries for Chrome OS settings. Search() is expected to be
// invoked by the settings UI as well as the the Launcher search UI. Search
// results are obtained by matching the provided query against search tags
// indexed in the LocalSearchService and cross-referencing results with
// SearchTagRegistry.
//
// Searches which do not provide any matches result in an empty results array.
class SearchHandler : public mojom::SearchHandler,
public SearchTagRegistry::Observer {
public:
SearchHandler(SearchTagRegistry* search_tag_registry,
OsSettingsSections* sections,
Hierarchy* hierarchy,
local_search_service::LocalSearchServiceProxy*
local_search_service_proxy);
~SearchHandler() override;
SearchHandler(const SearchHandler& other) = delete;
SearchHandler& operator=(const SearchHandler& other) = delete;
void BindInterface(
mojo::PendingReceiver<mojom::SearchHandler> pending_receiver);
// mojom::SearchHandler:
void Search(const std::u16string& query,
uint32_t max_num_results,
mojom::ParentResultBehavior parent_result_behavior,
SearchCallback callback) override;
void Observe(
mojo::PendingRemote<mojom::SearchResultsObserver> observer) override;
private:
FRIEND_TEST_ALL_PREFIXES(SearchHandlerTest, CompareSearchResults);
// SearchTagRegistry::Observer:
void OnRegistryUpdated() override;
std::vector<mojom::SearchResultPtr> GenerateSearchResultsArray(
const std::vector<local_search_service::Result>&
local_search_service_results,
uint32_t max_num_results,
mojom::ParentResultBehavior parent_result_behavior) const;
void OnFindComplete(
SearchCallback callback,
uint32_t max_num_results,
mojom::ParentResultBehavior parent_result_behavior,
local_search_service::ResponseStatus response_status,
const std::optional<std::vector<local_search_service::Result>>&
local_search_service_results);
void AddParentResults(
uint32_t max_num_results,
std::vector<mojom::SearchResultPtr>* search_results) const;
std::vector<mojom::SearchResultPtr>::iterator AddSectionResultIfPossible(
const std::vector<mojom::SearchResultPtr>::iterator& position,
const mojom::SearchResultPtr& child_result,
chromeos::settings::mojom::Section section,
std::vector<mojom::SearchResultPtr>* results) const;
std::vector<mojom::SearchResultPtr>::iterator AddSubpageResultIfPossible(
const std::vector<mojom::SearchResultPtr>::iterator& position,
const mojom::SearchResultPtr& child_result,
chromeos::settings::mojom::Subpage subpage,
double relevance_score,
std::vector<mojom::SearchResultPtr>* results) const;
mojom::SearchResultPtr ResultToSearchResult(
const local_search_service::Result& result) const;
std::string GetModifiedUrl(const SearchConcept& search_concept,
chromeos::settings::mojom::Section section) const;
// Returns true if |first| should be ranked before |second|.
static bool CompareSearchResults(const mojom::SearchResultPtr& first,
const mojom::SearchResultPtr& second);
raw_ptr<SearchTagRegistry> search_tag_registry_;
raw_ptr<OsSettingsSections> sections_;
raw_ptr<Hierarchy> hierarchy_;
mojo::Remote<local_search_service::mojom::Index> index_remote_;
// Note: Expected to have multiple clients, so ReceiverSet/RemoteSet are used.
mojo::ReceiverSet<mojom::SearchHandler> receivers_;
mojo::RemoteSet<mojom::SearchResultsObserver> observers_;
base::WeakPtrFactory<SearchHandler> weak_ptr_factory_{this};
};
} // namespace ash::settings
#endif // CHROME_BROWSER_UI_WEBUI_ASH_SETTINGS_SEARCH_SEARCH_HANDLER_H_
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