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// Copyright 2015 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.
#include <memory>
#include <string>
#include <vector>
#include "base/containers/flat_set.h"
#include "base/macros.h"
#include "base/scoped_observer.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
#include "components/browsing_data/core/browsing_data_utils.h"
#include "components/browsing_data/core/counters/browsing_data_counter.h"
#include "components/signin/core/browser/account_reconcilor.h"
#include "components/sync/driver/sync_service.h"
namespace base {
class ListValue;
namespace content {
class WebUI;
namespace settings {
// Chrome browser startup settings handler.
class ClearBrowsingDataHandler : public SettingsPageUIHandler,
public syncer::SyncServiceObserver {
explicit ClearBrowsingDataHandler(content::WebUI* webui);
~ClearBrowsingDataHandler() override;
// WebUIMessageHandler implementation.
void RegisterMessages() override;
void OnJavascriptAllowed() override;
void OnJavascriptDisallowed() override;
// Calls |HandleClearBrowsingData| with test data for browser test.
void HandleClearBrowsingDataForTest();
// Clears browsing data, called by Javascript.
void HandleClearBrowsingData(const base::ListValue* value);
// Called when a clearing task finished. |webui_callback_id| is provided
// by the WebUI action that initiated it.
// The ScopedSyncedDataDeletion is passed here to ensure that the Sync token
// is not invalidated before this function is run.
void OnClearingTaskFinished(
const std::string& webui_callback_id,
const base::flat_set<browsing_data::BrowsingDataType>& data_types,
std::unique_ptr<AccountReconcilor::ScopedSyncedDataDeletion> deletion);
// Initializes the dialog UI. Called by JavaScript when the DOM is ready.
void HandleInitialize(const base::ListValue* args);
// Implementation of SyncServiceObserver.
void OnStateChanged(syncer::SyncService* sync) override;
// Updates the footer of the dialog when the sync state changes.
void UpdateSyncState();
// Finds out whether we should show notice about other forms of history stored
// in user's account.
void RefreshHistoryNotice();
// Called as an asynchronous response to |RefreshHistoryNotice()|. Enables or
// disables the dialog about other forms of history stored in user's account
// that is shown when the history deletion is finished.
void UpdateHistoryDeletionDialog(bool show);
// Adds a browsing data |counter|.
void AddCounter(std::unique_ptr<browsing_data::BrowsingDataCounter> counter,
browsing_data::ClearBrowsingDataTab tab);
// Updates a counter text according to the |result|.
void UpdateCounterText(
std::unique_ptr<browsing_data::BrowsingDataCounter::Result> result);
// Record changes to the time period preferences.
void HandleTimePeriodChanged(const std::string& pref_name);
// Cached profile corresponding to the WebUI of this handler.
Profile* profile_;
// Counters that calculate the data volume for individual data types.
std::vector<std::unique_ptr<browsing_data::BrowsingDataCounter>> counters_;
// SyncService to observe sync state changes.
syncer::SyncService* sync_service_;
ScopedObserver<syncer::SyncService, syncer::SyncServiceObserver>
// Whether we should show a dialog informing the user about other forms of
// history stored in their account after the history deletion is finished.
bool show_history_deletion_dialog_;
// The TimePeriod preferences.
std::unique_ptr<IntegerPrefMember> period_;
std::unique_ptr<IntegerPrefMember> periodBasic_;
// A weak pointer factory for asynchronous calls referencing this class.
// The weak pointers are invalidated in |OnJavascriptDisallowed()| and
// |HandleInitialize()| to cancel previously initiated tasks.
base::WeakPtrFactory<ClearBrowsingDataHandler> weak_ptr_factory_{this};
} // namespace settings