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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/prefs/pref_service.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <utility> | |
| 9 | |
| 10 #include "base/bind.h" | |
| 11 #include "base/files/file_path.h" | |
| 12 #include "base/location.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "base/metrics/histogram.h" | |
| 15 #include "base/prefs/default_pref_store.h" | |
| 16 #include "base/prefs/pref_notifier_impl.h" | |
| 17 #include "base/prefs/pref_registry.h" | |
| 18 #include "base/prefs/pref_value_store.h" | |
| 19 #include "base/single_thread_task_runner.h" | |
| 20 #include "base/stl_util.h" | |
| 21 #include "base/strings/string_number_conversions.h" | |
| 22 #include "base/strings/string_util.h" | |
| 23 #include "base/thread_task_runner_handle.h" | |
| 24 #include "base/value_conversions.h" | |
| 25 #include "build/build_config.h" | |
| 26 | |
| 27 namespace { | |
| 28 | |
| 29 class ReadErrorHandler : public PersistentPrefStore::ReadErrorDelegate { | |
| 30 public: | |
| 31 ReadErrorHandler(base::Callback<void(PersistentPrefStore::PrefReadError)> cb) | |
| 32 : callback_(cb) {} | |
| 33 | |
| 34 void OnError(PersistentPrefStore::PrefReadError error) override { | |
| 35 callback_.Run(error); | |
| 36 } | |
| 37 | |
| 38 private: | |
| 39 base::Callback<void(PersistentPrefStore::PrefReadError)> callback_; | |
| 40 }; | |
| 41 | |
| 42 // Returns the WriteablePrefStore::PrefWriteFlags for the pref with the given | |
| 43 // |path|. | |
| 44 uint32_t GetWriteFlags(const PrefService::Preference* pref) { | |
| 45 uint32_t write_flags = WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS; | |
| 46 | |
| 47 if (!pref) | |
| 48 return write_flags; | |
| 49 | |
| 50 if (pref->registration_flags() & PrefRegistry::LOSSY_PREF) | |
| 51 write_flags |= WriteablePrefStore::LOSSY_PREF_WRITE_FLAG; | |
| 52 return write_flags; | |
| 53 } | |
| 54 | |
| 55 } // namespace | |
| 56 | |
| 57 PrefService::PrefService( | |
| 58 PrefNotifierImpl* pref_notifier, | |
| 59 PrefValueStore* pref_value_store, | |
| 60 PersistentPrefStore* user_prefs, | |
| 61 PrefRegistry* pref_registry, | |
| 62 base::Callback<void(PersistentPrefStore::PrefReadError)> | |
| 63 read_error_callback, | |
| 64 bool async) | |
| 65 : pref_notifier_(pref_notifier), | |
| 66 pref_value_store_(pref_value_store), | |
| 67 pref_registry_(pref_registry), | |
| 68 user_pref_store_(user_prefs), | |
| 69 read_error_callback_(read_error_callback) { | |
| 70 pref_notifier_->SetPrefService(this); | |
| 71 | |
| 72 // TODO(battre): This is a check for crbug.com/435208 to make sure that | |
| 73 // access violations are caused by a use-after-free bug and not by an | |
| 74 // initialization bug. | |
| 75 CHECK(pref_registry_); | |
| 76 CHECK(pref_value_store_); | |
| 77 | |
| 78 InitFromStorage(async); | |
| 79 } | |
| 80 | |
| 81 PrefService::~PrefService() { | |
| 82 DCHECK(CalledOnValidThread()); | |
| 83 | |
| 84 // Reset pointers so accesses after destruction reliably crash. | |
| 85 pref_value_store_.reset(); | |
| 86 pref_registry_ = NULL; | |
| 87 user_pref_store_ = NULL; | |
| 88 pref_notifier_.reset(); | |
| 89 } | |
| 90 | |
| 91 void PrefService::InitFromStorage(bool async) { | |
| 92 if (user_pref_store_->IsInitializationComplete()) { | |
| 93 read_error_callback_.Run(user_pref_store_->GetReadError()); | |
| 94 } else if (!async) { | |
| 95 read_error_callback_.Run(user_pref_store_->ReadPrefs()); | |
| 96 } else { | |
| 97 // Guarantee that initialization happens after this function returned. | |
| 98 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
| 99 FROM_HERE, | |
| 100 base::Bind(&PersistentPrefStore::ReadPrefsAsync, user_pref_store_.get(), | |
| 101 new ReadErrorHandler(read_error_callback_))); | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 void PrefService::CommitPendingWrite() { | |
| 106 DCHECK(CalledOnValidThread()); | |
| 107 user_pref_store_->CommitPendingWrite(); | |
| 108 } | |
| 109 | |
| 110 void PrefService::SchedulePendingLossyWrites() { | |
| 111 DCHECK(CalledOnValidThread()); | |
| 112 user_pref_store_->SchedulePendingLossyWrites(); | |
| 113 } | |
| 114 | |
| 115 bool PrefService::GetBoolean(const std::string& path) const { | |
| 116 DCHECK(CalledOnValidThread()); | |
| 117 | |
| 118 bool result = false; | |
| 119 | |
| 120 const base::Value* value = GetPreferenceValue(path); | |
| 121 if (!value) { | |
| 122 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 123 return result; | |
| 124 } | |
| 125 bool rv = value->GetAsBoolean(&result); | |
| 126 DCHECK(rv); | |
| 127 return result; | |
| 128 } | |
| 129 | |
| 130 int PrefService::GetInteger(const std::string& path) const { | |
| 131 DCHECK(CalledOnValidThread()); | |
| 132 | |
| 133 int result = 0; | |
| 134 | |
| 135 const base::Value* value = GetPreferenceValue(path); | |
| 136 if (!value) { | |
| 137 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 138 return result; | |
| 139 } | |
| 140 bool rv = value->GetAsInteger(&result); | |
| 141 DCHECK(rv); | |
| 142 return result; | |
| 143 } | |
| 144 | |
| 145 double PrefService::GetDouble(const std::string& path) const { | |
| 146 DCHECK(CalledOnValidThread()); | |
| 147 | |
| 148 double result = 0.0; | |
| 149 | |
| 150 const base::Value* value = GetPreferenceValue(path); | |
| 151 if (!value) { | |
| 152 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 153 return result; | |
| 154 } | |
| 155 bool rv = value->GetAsDouble(&result); | |
| 156 DCHECK(rv); | |
| 157 return result; | |
| 158 } | |
| 159 | |
| 160 std::string PrefService::GetString(const std::string& path) const { | |
| 161 DCHECK(CalledOnValidThread()); | |
| 162 | |
| 163 std::string result; | |
| 164 | |
| 165 const base::Value* value = GetPreferenceValue(path); | |
| 166 if (!value) { | |
| 167 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 168 return result; | |
| 169 } | |
| 170 bool rv = value->GetAsString(&result); | |
| 171 DCHECK(rv); | |
| 172 return result; | |
| 173 } | |
| 174 | |
| 175 base::FilePath PrefService::GetFilePath(const std::string& path) const { | |
| 176 DCHECK(CalledOnValidThread()); | |
| 177 | |
| 178 base::FilePath result; | |
| 179 | |
| 180 const base::Value* value = GetPreferenceValue(path); | |
| 181 if (!value) { | |
| 182 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 183 return base::FilePath(result); | |
| 184 } | |
| 185 bool rv = base::GetValueAsFilePath(*value, &result); | |
| 186 DCHECK(rv); | |
| 187 return result; | |
| 188 } | |
| 189 | |
| 190 bool PrefService::HasPrefPath(const std::string& path) const { | |
| 191 const Preference* pref = FindPreference(path); | |
| 192 return pref && !pref->IsDefaultValue(); | |
| 193 } | |
| 194 | |
| 195 scoped_ptr<base::DictionaryValue> PrefService::GetPreferenceValues() const { | |
| 196 DCHECK(CalledOnValidThread()); | |
| 197 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 198 for (const auto& it : *pref_registry_) { | |
| 199 out->Set(it.first, GetPreferenceValue(it.first)->CreateDeepCopy()); | |
| 200 } | |
| 201 return out; | |
| 202 } | |
| 203 | |
| 204 scoped_ptr<base::DictionaryValue> PrefService::GetPreferenceValuesOmitDefaults() | |
| 205 const { | |
| 206 DCHECK(CalledOnValidThread()); | |
| 207 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 208 for (const auto& it : *pref_registry_) { | |
| 209 const Preference* pref = FindPreference(it.first); | |
| 210 if (pref->IsDefaultValue()) | |
| 211 continue; | |
| 212 out->Set(it.first, pref->GetValue()->CreateDeepCopy()); | |
| 213 } | |
| 214 return out; | |
| 215 } | |
| 216 | |
| 217 scoped_ptr<base::DictionaryValue> | |
| 218 PrefService::GetPreferenceValuesWithoutPathExpansion() const { | |
| 219 DCHECK(CalledOnValidThread()); | |
| 220 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 221 for (const auto& it : *pref_registry_) { | |
| 222 const base::Value* value = GetPreferenceValue(it.first); | |
| 223 DCHECK(value); | |
| 224 out->SetWithoutPathExpansion(it.first, value->CreateDeepCopy()); | |
| 225 } | |
| 226 return out; | |
| 227 } | |
| 228 | |
| 229 const PrefService::Preference* PrefService::FindPreference( | |
| 230 const std::string& pref_name) const { | |
| 231 DCHECK(CalledOnValidThread()); | |
| 232 PreferenceMap::iterator it = prefs_map_.find(pref_name); | |
| 233 if (it != prefs_map_.end()) | |
| 234 return &(it->second); | |
| 235 const base::Value* default_value = NULL; | |
| 236 if (!pref_registry_->defaults()->GetValue(pref_name, &default_value)) | |
| 237 return NULL; | |
| 238 it = prefs_map_.insert( | |
| 239 std::make_pair(pref_name, Preference( | |
| 240 this, pref_name, default_value->GetType()))).first; | |
| 241 return &(it->second); | |
| 242 } | |
| 243 | |
| 244 bool PrefService::ReadOnly() const { | |
| 245 return user_pref_store_->ReadOnly(); | |
| 246 } | |
| 247 | |
| 248 PrefService::PrefInitializationStatus PrefService::GetInitializationStatus() | |
| 249 const { | |
| 250 if (!user_pref_store_->IsInitializationComplete()) | |
| 251 return INITIALIZATION_STATUS_WAITING; | |
| 252 | |
| 253 switch (user_pref_store_->GetReadError()) { | |
| 254 case PersistentPrefStore::PREF_READ_ERROR_NONE: | |
| 255 return INITIALIZATION_STATUS_SUCCESS; | |
| 256 case PersistentPrefStore::PREF_READ_ERROR_NO_FILE: | |
| 257 return INITIALIZATION_STATUS_CREATED_NEW_PREF_STORE; | |
| 258 default: | |
| 259 return INITIALIZATION_STATUS_ERROR; | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 bool PrefService::IsManagedPreference(const std::string& pref_name) const { | |
| 264 const Preference* pref = FindPreference(pref_name); | |
| 265 return pref && pref->IsManaged(); | |
| 266 } | |
| 267 | |
| 268 bool PrefService::IsPreferenceManagedByCustodian( | |
| 269 const std::string& pref_name) const { | |
| 270 const Preference* pref = FindPreference(pref_name); | |
| 271 return pref && pref->IsManagedByCustodian(); | |
| 272 } | |
| 273 | |
| 274 bool PrefService::IsUserModifiablePreference( | |
| 275 const std::string& pref_name) const { | |
| 276 const Preference* pref = FindPreference(pref_name); | |
| 277 return pref && pref->IsUserModifiable(); | |
| 278 } | |
| 279 | |
| 280 const base::DictionaryValue* PrefService::GetDictionary( | |
| 281 const std::string& path) const { | |
| 282 DCHECK(CalledOnValidThread()); | |
| 283 | |
| 284 const base::Value* value = GetPreferenceValue(path); | |
| 285 if (!value) { | |
| 286 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 287 return NULL; | |
| 288 } | |
| 289 if (value->GetType() != base::Value::TYPE_DICTIONARY) { | |
| 290 NOTREACHED(); | |
| 291 return NULL; | |
| 292 } | |
| 293 return static_cast<const base::DictionaryValue*>(value); | |
| 294 } | |
| 295 | |
| 296 const base::Value* PrefService::GetUserPrefValue( | |
| 297 const std::string& path) const { | |
| 298 DCHECK(CalledOnValidThread()); | |
| 299 | |
| 300 const Preference* pref = FindPreference(path); | |
| 301 if (!pref) { | |
| 302 NOTREACHED() << "Trying to get an unregistered pref: " << path; | |
| 303 return NULL; | |
| 304 } | |
| 305 | |
| 306 // Look for an existing preference in the user store. If it doesn't | |
| 307 // exist, return NULL. | |
| 308 base::Value* value = NULL; | |
| 309 if (!user_pref_store_->GetMutableValue(path, &value)) | |
| 310 return NULL; | |
| 311 | |
| 312 if (!value->IsType(pref->GetType())) { | |
| 313 NOTREACHED() << "Pref value type doesn't match registered type."; | |
| 314 return NULL; | |
| 315 } | |
| 316 | |
| 317 return value; | |
| 318 } | |
| 319 | |
| 320 void PrefService::SetDefaultPrefValue(const std::string& path, | |
| 321 base::Value* value) { | |
| 322 DCHECK(CalledOnValidThread()); | |
| 323 pref_registry_->SetDefaultPrefValue(path, value); | |
| 324 } | |
| 325 | |
| 326 const base::Value* PrefService::GetDefaultPrefValue( | |
| 327 const std::string& path) const { | |
| 328 DCHECK(CalledOnValidThread()); | |
| 329 // Lookup the preference in the default store. | |
| 330 const base::Value* value = NULL; | |
| 331 if (!pref_registry_->defaults()->GetValue(path, &value)) { | |
| 332 NOTREACHED() << "Default value missing for pref: " << path; | |
| 333 return NULL; | |
| 334 } | |
| 335 return value; | |
| 336 } | |
| 337 | |
| 338 const base::ListValue* PrefService::GetList(const std::string& path) const { | |
| 339 DCHECK(CalledOnValidThread()); | |
| 340 | |
| 341 const base::Value* value = GetPreferenceValue(path); | |
| 342 if (!value) { | |
| 343 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 344 return NULL; | |
| 345 } | |
| 346 if (value->GetType() != base::Value::TYPE_LIST) { | |
| 347 NOTREACHED(); | |
| 348 return NULL; | |
| 349 } | |
| 350 return static_cast<const base::ListValue*>(value); | |
| 351 } | |
| 352 | |
| 353 void PrefService::AddPrefObserver(const std::string& path, PrefObserver* obs) { | |
| 354 pref_notifier_->AddPrefObserver(path, obs); | |
| 355 } | |
| 356 | |
| 357 void PrefService::RemovePrefObserver(const std::string& path, | |
| 358 PrefObserver* obs) { | |
| 359 pref_notifier_->RemovePrefObserver(path, obs); | |
| 360 } | |
| 361 | |
| 362 void PrefService::AddPrefInitObserver(base::Callback<void(bool)> obs) { | |
| 363 pref_notifier_->AddInitObserver(obs); | |
| 364 } | |
| 365 | |
| 366 PrefRegistry* PrefService::DeprecatedGetPrefRegistry() { | |
| 367 return pref_registry_.get(); | |
| 368 } | |
| 369 | |
| 370 void PrefService::ClearPref(const std::string& path) { | |
| 371 DCHECK(CalledOnValidThread()); | |
| 372 | |
| 373 const Preference* pref = FindPreference(path); | |
| 374 if (!pref) { | |
| 375 NOTREACHED() << "Trying to clear an unregistered pref: " << path; | |
| 376 return; | |
| 377 } | |
| 378 user_pref_store_->RemoveValue(path, GetWriteFlags(pref)); | |
| 379 } | |
| 380 | |
| 381 void PrefService::Set(const std::string& path, const base::Value& value) { | |
| 382 SetUserPrefValue(path, value.DeepCopy()); | |
| 383 } | |
| 384 | |
| 385 void PrefService::SetBoolean(const std::string& path, bool value) { | |
| 386 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 387 } | |
| 388 | |
| 389 void PrefService::SetInteger(const std::string& path, int value) { | |
| 390 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 391 } | |
| 392 | |
| 393 void PrefService::SetDouble(const std::string& path, double value) { | |
| 394 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 395 } | |
| 396 | |
| 397 void PrefService::SetString(const std::string& path, const std::string& value) { | |
| 398 SetUserPrefValue(path, new base::StringValue(value)); | |
| 399 } | |
| 400 | |
| 401 void PrefService::SetFilePath(const std::string& path, | |
| 402 const base::FilePath& value) { | |
| 403 SetUserPrefValue(path, base::CreateFilePathValue(value)); | |
| 404 } | |
| 405 | |
| 406 void PrefService::SetInt64(const std::string& path, int64_t value) { | |
| 407 SetUserPrefValue(path, new base::StringValue(base::Int64ToString(value))); | |
| 408 } | |
| 409 | |
| 410 int64_t PrefService::GetInt64(const std::string& path) const { | |
| 411 DCHECK(CalledOnValidThread()); | |
| 412 | |
| 413 const base::Value* value = GetPreferenceValue(path); | |
| 414 if (!value) { | |
| 415 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 416 return 0; | |
| 417 } | |
| 418 std::string result("0"); | |
| 419 bool rv = value->GetAsString(&result); | |
| 420 DCHECK(rv); | |
| 421 | |
| 422 int64_t val; | |
| 423 base::StringToInt64(result, &val); | |
| 424 return val; | |
| 425 } | |
| 426 | |
| 427 void PrefService::SetUint64(const std::string& path, uint64_t value) { | |
| 428 SetUserPrefValue(path, new base::StringValue(base::Uint64ToString(value))); | |
| 429 } | |
| 430 | |
| 431 uint64_t PrefService::GetUint64(const std::string& path) const { | |
| 432 DCHECK(CalledOnValidThread()); | |
| 433 | |
| 434 const base::Value* value = GetPreferenceValue(path); | |
| 435 if (!value) { | |
| 436 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 437 return 0; | |
| 438 } | |
| 439 std::string result("0"); | |
| 440 bool rv = value->GetAsString(&result); | |
| 441 DCHECK(rv); | |
| 442 | |
| 443 uint64_t val; | |
| 444 base::StringToUint64(result, &val); | |
| 445 return val; | |
| 446 } | |
| 447 | |
| 448 base::Value* PrefService::GetMutableUserPref(const std::string& path, | |
| 449 base::Value::Type type) { | |
| 450 CHECK(type == base::Value::TYPE_DICTIONARY || type == base::Value::TYPE_LIST); | |
| 451 DCHECK(CalledOnValidThread()); | |
| 452 | |
| 453 const Preference* pref = FindPreference(path); | |
| 454 if (!pref) { | |
| 455 NOTREACHED() << "Trying to get an unregistered pref: " << path; | |
| 456 return NULL; | |
| 457 } | |
| 458 if (pref->GetType() != type) { | |
| 459 NOTREACHED() << "Wrong type for GetMutableValue: " << path; | |
| 460 return NULL; | |
| 461 } | |
| 462 | |
| 463 // Look for an existing preference in the user store. If it doesn't | |
| 464 // exist or isn't the correct type, create a new user preference. | |
| 465 base::Value* value = NULL; | |
| 466 if (!user_pref_store_->GetMutableValue(path, &value) || | |
| 467 !value->IsType(type)) { | |
| 468 if (type == base::Value::TYPE_DICTIONARY) { | |
| 469 value = new base::DictionaryValue; | |
| 470 } else if (type == base::Value::TYPE_LIST) { | |
| 471 value = new base::ListValue; | |
| 472 } else { | |
| 473 NOTREACHED(); | |
| 474 } | |
| 475 user_pref_store_->SetValueSilently(path, make_scoped_ptr(value), | |
| 476 GetWriteFlags(pref)); | |
| 477 } | |
| 478 return value; | |
| 479 } | |
| 480 | |
| 481 void PrefService::ReportUserPrefChanged(const std::string& key) { | |
| 482 DCHECK(CalledOnValidThread()); | |
| 483 user_pref_store_->ReportValueChanged(key, GetWriteFlags(FindPreference(key))); | |
| 484 } | |
| 485 | |
| 486 void PrefService::SetUserPrefValue(const std::string& path, | |
| 487 base::Value* new_value) { | |
| 488 scoped_ptr<base::Value> owned_value(new_value); | |
| 489 DCHECK(CalledOnValidThread()); | |
| 490 | |
| 491 const Preference* pref = FindPreference(path); | |
| 492 if (!pref) { | |
| 493 NOTREACHED() << "Trying to write an unregistered pref: " << path; | |
| 494 return; | |
| 495 } | |
| 496 if (pref->GetType() != new_value->GetType()) { | |
| 497 NOTREACHED() << "Trying to set pref " << path | |
| 498 << " of type " << pref->GetType() | |
| 499 << " to value of type " << new_value->GetType(); | |
| 500 return; | |
| 501 } | |
| 502 | |
| 503 user_pref_store_->SetValue(path, std::move(owned_value), GetWriteFlags(pref)); | |
| 504 } | |
| 505 | |
| 506 void PrefService::UpdateCommandLinePrefStore(PrefStore* command_line_store) { | |
| 507 pref_value_store_->UpdateCommandLinePrefStore(command_line_store); | |
| 508 } | |
| 509 | |
| 510 /////////////////////////////////////////////////////////////////////////////// | |
| 511 // PrefService::Preference | |
| 512 | |
| 513 PrefService::Preference::Preference(const PrefService* service, | |
| 514 const std::string& name, | |
| 515 base::Value::Type type) | |
| 516 : name_(name), type_(type), pref_service_(service) { | |
| 517 DCHECK(service); | |
| 518 // Cache the registration flags at creation time to avoid multiple map lookups | |
| 519 // later. | |
| 520 registration_flags_ = service->pref_registry_->GetRegistrationFlags(name_); | |
| 521 } | |
| 522 | |
| 523 const std::string PrefService::Preference::name() const { | |
| 524 return name_; | |
| 525 } | |
| 526 | |
| 527 base::Value::Type PrefService::Preference::GetType() const { | |
| 528 return type_; | |
| 529 } | |
| 530 | |
| 531 const base::Value* PrefService::Preference::GetValue() const { | |
| 532 const base::Value* result= pref_service_->GetPreferenceValue(name_); | |
| 533 DCHECK(result) << "Must register pref before getting its value"; | |
| 534 return result; | |
| 535 } | |
| 536 | |
| 537 const base::Value* PrefService::Preference::GetRecommendedValue() const { | |
| 538 DCHECK(pref_service_->FindPreference(name_)) | |
| 539 << "Must register pref before getting its value"; | |
| 540 | |
| 541 const base::Value* found_value = NULL; | |
| 542 if (pref_value_store()->GetRecommendedValue(name_, type_, &found_value)) { | |
| 543 DCHECK(found_value->IsType(type_)); | |
| 544 return found_value; | |
| 545 } | |
| 546 | |
| 547 // The pref has no recommended value. | |
| 548 return NULL; | |
| 549 } | |
| 550 | |
| 551 bool PrefService::Preference::IsManaged() const { | |
| 552 return pref_value_store()->PrefValueInManagedStore(name_); | |
| 553 } | |
| 554 | |
| 555 bool PrefService::Preference::IsManagedByCustodian() const { | |
| 556 return pref_value_store()->PrefValueInSupervisedStore(name_.c_str()); | |
| 557 } | |
| 558 | |
| 559 bool PrefService::Preference::IsRecommended() const { | |
| 560 return pref_value_store()->PrefValueFromRecommendedStore(name_); | |
| 561 } | |
| 562 | |
| 563 bool PrefService::Preference::HasExtensionSetting() const { | |
| 564 return pref_value_store()->PrefValueInExtensionStore(name_); | |
| 565 } | |
| 566 | |
| 567 bool PrefService::Preference::HasUserSetting() const { | |
| 568 return pref_value_store()->PrefValueInUserStore(name_); | |
| 569 } | |
| 570 | |
| 571 bool PrefService::Preference::IsExtensionControlled() const { | |
| 572 return pref_value_store()->PrefValueFromExtensionStore(name_); | |
| 573 } | |
| 574 | |
| 575 bool PrefService::Preference::IsUserControlled() const { | |
| 576 return pref_value_store()->PrefValueFromUserStore(name_); | |
| 577 } | |
| 578 | |
| 579 bool PrefService::Preference::IsDefaultValue() const { | |
| 580 return pref_value_store()->PrefValueFromDefaultStore(name_); | |
| 581 } | |
| 582 | |
| 583 bool PrefService::Preference::IsUserModifiable() const { | |
| 584 return pref_value_store()->PrefValueUserModifiable(name_); | |
| 585 } | |
| 586 | |
| 587 bool PrefService::Preference::IsExtensionModifiable() const { | |
| 588 return pref_value_store()->PrefValueExtensionModifiable(name_); | |
| 589 } | |
| 590 | |
| 591 const base::Value* PrefService::GetPreferenceValue( | |
| 592 const std::string& path) const { | |
| 593 DCHECK(CalledOnValidThread()); | |
| 594 | |
| 595 // TODO(battre): This is a check for crbug.com/435208. After analyzing some | |
| 596 // crash dumps it looks like the PrefService is accessed even though it has | |
| 597 // been cleared already. | |
| 598 CHECK(pref_registry_); | |
| 599 CHECK(pref_registry_->defaults()); | |
| 600 CHECK(pref_value_store_); | |
| 601 | |
| 602 const base::Value* default_value = NULL; | |
| 603 if (pref_registry_->defaults()->GetValue(path, &default_value)) { | |
| 604 const base::Value* found_value = NULL; | |
| 605 base::Value::Type default_type = default_value->GetType(); | |
| 606 if (pref_value_store_->GetValue(path, default_type, &found_value)) { | |
| 607 DCHECK(found_value->IsType(default_type)); | |
| 608 return found_value; | |
| 609 } else { | |
| 610 // Every registered preference has at least a default value. | |
| 611 NOTREACHED() << "no valid value found for registered pref " << path; | |
| 612 } | |
| 613 } | |
| 614 | |
| 615 return NULL; | |
| 616 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1648403002:
Move base/prefs to components/prefs (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master