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// Copyright (c) 2012 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 "components/syncable_prefs/pref_service_syncable.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/strings/string_number_conversions.h"
#include "base/value_conversions.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/default_pref_store.h"
#include "components/prefs/overlay_user_pref_store.h"
#include "components/prefs/pref_notifier_impl.h"
#include "components/prefs/pref_registry.h"
#include "components/prefs/pref_value_store.h"
#include "components/syncable_prefs/pref_model_associator.h"
#include "components/syncable_prefs/pref_service_syncable_observer.h"
namespace syncable_prefs {
PrefServiceSyncable::PrefServiceSyncable(
PrefNotifierImpl* pref_notifier,
PrefValueStore* pref_value_store,
PersistentPrefStore* user_prefs,
user_prefs::PrefRegistrySyncable* pref_registry,
const PrefModelAssociatorClient* pref_model_associator_client,
base::Callback<void(PersistentPrefStore::PrefReadError)>
read_error_callback,
bool async)
: PrefService(pref_notifier,
pref_value_store,
user_prefs,
pref_registry,
read_error_callback,
async),
pref_sync_associator_(pref_model_associator_client, syncer::PREFERENCES),
priority_pref_sync_associator_(pref_model_associator_client,
syncer::PRIORITY_PREFERENCES) {
pref_sync_associator_.SetPrefService(this);
priority_pref_sync_associator_.SetPrefService(this);
// Let PrefModelAssociators know about changes to preference values.
pref_value_store->set_callback(base::Bind(
&PrefServiceSyncable::ProcessPrefChange, base::Unretained(this)));
// Add already-registered syncable preferences to PrefModelAssociator.
for (PrefRegistry::const_iterator it = pref_registry->begin();
it != pref_registry->end(); ++it) {
const std::string& path = it->first;
AddRegisteredSyncablePreference(path,
pref_registry_->GetRegistrationFlags(path));
}
// Watch for syncable preferences registered after this point.
pref_registry->SetSyncableRegistrationCallback(
base::Bind(&PrefServiceSyncable::AddRegisteredSyncablePreference,
base::Unretained(this)));
}
PrefServiceSyncable::~PrefServiceSyncable() {
// Remove our callback from the registry, since it may outlive us.
user_prefs::PrefRegistrySyncable* registry =
static_cast<user_prefs::PrefRegistrySyncable*>(pref_registry_.get());
registry->SetSyncableRegistrationCallback(
user_prefs::PrefRegistrySyncable::SyncableRegistrationCallback());
}
PrefServiceSyncable* PrefServiceSyncable::CreateIncognitoPrefService(
PrefStore* incognito_extension_pref_store,
const std::vector<const char*>& overlay_pref_names) {
pref_service_forked_ = true;
PrefNotifierImpl* pref_notifier = new PrefNotifierImpl();
OverlayUserPrefStore* incognito_pref_store =
new OverlayUserPrefStore(user_pref_store_.get());
for (const char* overlay_pref_name : overlay_pref_names)
incognito_pref_store->RegisterOverlayPref(overlay_pref_name);
scoped_refptr<user_prefs::PrefRegistrySyncable> forked_registry =
static_cast<user_prefs::PrefRegistrySyncable*>(
pref_registry_.get())->ForkForIncognito();
PrefServiceSyncable* incognito_service = new PrefServiceSyncable(
pref_notifier,
pref_value_store_->CloneAndSpecialize(NULL, // managed
NULL, // supervised_user
incognito_extension_pref_store,
NULL, // command_line_prefs
incognito_pref_store,
NULL, // recommended
forked_registry->defaults().get(),
pref_notifier),
incognito_pref_store,
forked_registry.get(),
pref_sync_associator_.client(),
read_error_callback_,
false);
return incognito_service;
}
bool PrefServiceSyncable::IsSyncing() {
return pref_sync_associator_.models_associated();
}
bool PrefServiceSyncable::IsPrioritySyncing() {
return priority_pref_sync_associator_.models_associated();
}
bool PrefServiceSyncable::IsPrefSynced(const std::string& name) const {
return pref_sync_associator_.IsPrefSynced(name) ||
priority_pref_sync_associator_.IsPrefSynced(name);
}
void PrefServiceSyncable::AddObserver(PrefServiceSyncableObserver* observer) {
observer_list_.AddObserver(observer);
}
void PrefServiceSyncable::RemoveObserver(
PrefServiceSyncableObserver* observer) {
observer_list_.RemoveObserver(observer);
}
syncer::SyncableService* PrefServiceSyncable::GetSyncableService(
const syncer::ModelType& type) {
if (type == syncer::PREFERENCES) {
return &pref_sync_associator_;
} else if (type == syncer::PRIORITY_PREFERENCES) {
return &priority_pref_sync_associator_;
} else {
NOTREACHED() << "invalid model type: " << type;
return NULL;
}
}
void PrefServiceSyncable::UpdateCommandLinePrefStore(
PrefStore* cmd_line_store) {
// If |pref_service_forked_| is true, then this PrefService and the forked
// copies will be out of sync.
DCHECK(!pref_service_forked_);
PrefService::UpdateCommandLinePrefStore(cmd_line_store);
}
void PrefServiceSyncable::AddSyncedPrefObserver(const std::string& name,
SyncedPrefObserver* observer) {
pref_sync_associator_.AddSyncedPrefObserver(name, observer);
priority_pref_sync_associator_.AddSyncedPrefObserver(name, observer);
}
void PrefServiceSyncable::RemoveSyncedPrefObserver(
const std::string& name,
SyncedPrefObserver* observer) {
pref_sync_associator_.RemoveSyncedPrefObserver(name, observer);
priority_pref_sync_associator_.RemoveSyncedPrefObserver(name, observer);
}
// Set the PrefModelAssociatorClient to use for that object during tests.
void PrefServiceSyncable::SetPrefModelAssociatorClientForTesting(
const PrefModelAssociatorClient* pref_model_associator_client) {
pref_sync_associator_.SetPrefModelAssociatorClientForTesting(
pref_model_associator_client);
priority_pref_sync_associator_.SetPrefModelAssociatorClientForTesting(
pref_model_associator_client);
}
void PrefServiceSyncable::AddRegisteredSyncablePreference(
const std::string& path,
uint32_t flags) {
DCHECK(FindPreference(path));
if (flags & user_prefs::PrefRegistrySyncable::SYNCABLE_PREF) {
pref_sync_associator_.RegisterPref(path.c_str());
} else if (flags & user_prefs::PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF) {
priority_pref_sync_associator_.RegisterPref(path.c_str());
}
}
void PrefServiceSyncable::OnIsSyncingChanged() {
FOR_EACH_OBSERVER(PrefServiceSyncableObserver, observer_list_,
OnIsSyncingChanged());
}
void PrefServiceSyncable::ProcessPrefChange(const std::string& name) {
pref_sync_associator_.ProcessPrefChange(name);
priority_pref_sync_associator_.ProcessPrefChange(name);
}
} // namespace syncable_prefs
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