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- // Copyright 2018 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef COMPONENTS_NTP_TILES_CUSTOM_LINKS_MANAGER_IMPL_H_
- #define COMPONENTS_NTP_TILES_CUSTOM_LINKS_MANAGER_IMPL_H_
- #include <utility>
- #include <vector>
- #include "base/memory/raw_ptr.h"
- #include "base/memory/weak_ptr.h"
- #include "base/scoped_observation.h"
- #include "components/history/core/browser/history_service.h"
- #include "components/history/core/browser/history_service_observer.h"
- #include "components/ntp_tiles/custom_links_manager.h"
- #include "components/ntp_tiles/custom_links_store.h"
- #include "components/ntp_tiles/most_visited_sites.h"
- #include "components/ntp_tiles/ntp_tile.h"
- #include "components/prefs/pref_change_registrar.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- class PrefService;
- namespace user_prefs {
- class PrefRegistrySyncable;
- } // namespace user_prefs
- namespace ntp_tiles {
- // Non-test implementation of the CustomLinksManager interface.
- class CustomLinksManagerImpl : public CustomLinksManager,
- public history::HistoryServiceObserver {
- public:
- // Restores the previous state of |current_links_| from prefs.
- CustomLinksManagerImpl(PrefService* prefs,
- // Can be nullptr in unittests.
- history::HistoryService* history_service);
- CustomLinksManagerImpl(const CustomLinksManagerImpl&) = delete;
- CustomLinksManagerImpl& operator=(const CustomLinksManagerImpl&) = delete;
- ~CustomLinksManagerImpl() override;
- // CustomLinksManager implementation.
- bool Initialize(const NTPTilesVector& tiles) override;
- void Uninitialize() override;
- bool IsInitialized() const override;
- const std::vector<Link>& GetLinks() const override;
- bool AddLink(const GURL& url, const std::u16string& title) override;
- bool UpdateLink(const GURL& url,
- const GURL& new_url,
- const std::u16string& new_title) override;
- bool ReorderLink(const GURL& url, size_t new_pos) override;
- bool DeleteLink(const GURL& url) override;
- bool UndoAction() override;
- base::CallbackListSubscription RegisterCallbackForOnChanged(
- base::RepeatingClosure callback) override;
- // Register preferences used by this class.
- static void RegisterProfilePrefs(
- user_prefs::PrefRegistrySyncable* user_prefs);
- private:
- void ClearLinks();
- // Stores the current list to the profile's preferences. Does not notify
- // |OnPreferenceChanged|.
- void StoreLinks();
- // Checks during instantiation to remove custom shortcut links
- // created through preinstalled apps.
- void RemoveCustomLinksForPreinstalledApps();
- // Returns an iterator into |custom_links_|.
- std::vector<Link>::iterator FindLinkWithUrl(const GURL& url);
- // history::HistoryServiceObserver implementation.
- // Deletes any Most Visited links whose URL is in |deletion_info|. Clears
- // |previous_links_|. Does not delete entries expired by HistoryService.
- void OnURLsDeleted(history::HistoryService* history_service,
- const history::DeletionInfo& deletion_info) override;
- void HistoryServiceBeingDeleted(
- history::HistoryService* history_service) override;
- // Called when the current list of links and/or initialization state in
- // PrefService is modified. Saves the new set of links in |current_links_|
- // and notifies |closure_list_|.
- void OnPreferenceChanged();
- const raw_ptr<PrefService> prefs_;
- CustomLinksStore store_;
- std::vector<Link> current_links_;
- // The state of the current list of links before the last action was
- // performed.
- absl::optional<std::vector<Link>> previous_links_;
- // List of closures to be invoked when custom links are updated by outside
- // sources.
- base::RepeatingClosureList closure_list_;
- // Observer for the HistoryService.
- base::ScopedObservation<history::HistoryService,
- history::HistoryServiceObserver>
- history_service_observation_{this};
- // Observer for Chrome sync changes to |prefs::kCustomLinksList| and
- // |prefs::kCustomLinksInitialized|.
- PrefChangeRegistrar pref_change_registrar_;
- // Used to ignore notifications from |pref_change_registrar_| that we trigger
- // ourselves when updating the preferences.
- bool updating_preferences_ = false;
- base::WeakPtrFactory<CustomLinksManagerImpl> weak_ptr_factory_{this};
- };
- } // namespace ntp_tiles
- #endif // COMPONENTS_NTP_TILES_CUSTOM_LINKS_MANAGER_IMPL_H_
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