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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 | |
| 9 #include "base/bind.h" | |
| 10 #include "base/files/file_path.h" | |
| 11 #include "base/location.h" | |
| 12 #include "base/logging.h" | |
| 13 #include "base/metrics/histogram.h" | |
| 14 #include "base/prefs/default_pref_store.h" | |
| 15 #include "base/prefs/pref_notifier_impl.h" | |
| 16 #include "base/prefs/pref_registry.h" | |
| 17 #include "base/prefs/pref_value_store.h" | |
| 18 #include "base/single_thread_task_runner.h" | |
| 19 #include "base/stl_util.h" | |
| 20 #include "base/strings/string_number_conversions.h" | |
| 21 #include "base/strings/string_util.h" | |
| 22 #include "base/thread_task_runner_handle.h" | |
| 23 #include "base/value_conversions.h" | |
| 24 #include "build/build_config.h" | |
| 25 | |
| 26 namespace { | |
| 27 | |
| 28 class ReadErrorHandler : public PersistentPrefStore::ReadErrorDelegate { | |
| 29 public: | |
| 30 ReadErrorHandler(base::Callback<void(PersistentPrefStore::PrefReadError)> cb) | |
| 31 : callback_(cb) {} | |
| 32 | |
| 33 void OnError(PersistentPrefStore::PrefReadError error) override { | |
| 34 callback_.Run(error); | |
| 35 } | |
| 36 | |
| 37 private: | |
| 38 base::Callback<void(PersistentPrefStore::PrefReadError)> callback_; | |
| 39 }; | |
| 40 | |
| 41 // Returns the WriteablePrefStore::PrefWriteFlags for the pref with the given | |
| 42 // |path|. | |
| 43 uint32 GetWriteFlags(const PrefService::Preference* pref) { | |
| 44 uint32 write_flags = WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS; | |
| 45 | |
| 46 if (!pref) | |
| 47 return write_flags; | |
| 48 | |
| 49 if (pref->registration_flags() & PrefRegistry::LOSSY_PREF) | |
| 50 write_flags |= WriteablePrefStore::LOSSY_PREF_WRITE_FLAG; | |
| 51 return write_flags; | |
| 52 } | |
| 53 | |
| 54 } // namespace | |
| 55 | |
| 56 PrefService::PrefService( | |
| 57 PrefNotifierImpl* pref_notifier, | |
| 58 PrefValueStore* pref_value_store, | |
| 59 PersistentPrefStore* user_prefs, | |
| 60 PrefRegistry* pref_registry, | |
| 61 base::Callback<void(PersistentPrefStore::PrefReadError)> | |
| 62 read_error_callback, | |
| 63 bool async) | |
| 64 : pref_notifier_(pref_notifier), | |
| 65 pref_value_store_(pref_value_store), | |
| 66 pref_registry_(pref_registry), | |
| 67 user_pref_store_(user_prefs), | |
| 68 read_error_callback_(read_error_callback) { | |
| 69 pref_notifier_->SetPrefService(this); | |
| 70 | |
| 71 // TODO(battre): This is a check for crbug.com/435208 to make sure that | |
| 72 // access violations are caused by a use-after-free bug and not by an | |
| 73 // initialization bug. | |
| 74 CHECK(pref_registry_); | |
| 75 CHECK(pref_value_store_); | |
| 76 | |
| 77 InitFromStorage(async); | |
| 78 } | |
| 79 | |
| 80 PrefService::~PrefService() { | |
| 81 DCHECK(CalledOnValidThread()); | |
| 82 | |
| 83 // Reset pointers so accesses after destruction reliably crash. | |
| 84 pref_value_store_.reset(); | |
| 85 pref_registry_ = NULL; | |
| 86 user_pref_store_ = NULL; | |
| 87 pref_notifier_.reset(); | |
| 88 } | |
| 89 | |
| 90 void PrefService::InitFromStorage(bool async) { | |
| 91 if (user_pref_store_->IsInitializationComplete()) { | |
| 92 read_error_callback_.Run(user_pref_store_->GetReadError()); | |
| 93 } else if (!async) { | |
| 94 read_error_callback_.Run(user_pref_store_->ReadPrefs()); | |
| 95 } else { | |
| 96 // Guarantee that initialization happens after this function returned. | |
| 97 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
| 98 FROM_HERE, | |
| 99 base::Bind(&PersistentPrefStore::ReadPrefsAsync, user_pref_store_.get(), | |
| 100 new ReadErrorHandler(read_error_callback_))); | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 void PrefService::CommitPendingWrite() { | |
| 105 DCHECK(CalledOnValidThread()); | |
| 106 user_pref_store_->CommitPendingWrite(); | |
| 107 } | |
| 108 | |
| 109 void PrefService::SchedulePendingLossyWrites() { | |
| 110 DCHECK(CalledOnValidThread()); | |
| 111 user_pref_store_->SchedulePendingLossyWrites(); | |
| 112 } | |
| 113 | |
| 114 bool PrefService::GetBoolean(const std::string& path) const { | |
| 115 DCHECK(CalledOnValidThread()); | |
| 116 | |
| 117 bool result = false; | |
| 118 | |
| 119 const base::Value* value = GetPreferenceValue(path); | |
| 120 if (!value) { | |
| 121 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 122 return result; | |
| 123 } | |
| 124 bool rv = value->GetAsBoolean(&result); | |
| 125 DCHECK(rv); | |
| 126 return result; | |
| 127 } | |
| 128 | |
| 129 int PrefService::GetInteger(const std::string& path) const { | |
| 130 DCHECK(CalledOnValidThread()); | |
| 131 | |
| 132 int result = 0; | |
| 133 | |
| 134 const base::Value* value = GetPreferenceValue(path); | |
| 135 if (!value) { | |
| 136 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 137 return result; | |
| 138 } | |
| 139 bool rv = value->GetAsInteger(&result); | |
| 140 DCHECK(rv); | |
| 141 return result; | |
| 142 } | |
| 143 | |
| 144 double PrefService::GetDouble(const std::string& path) const { | |
| 145 DCHECK(CalledOnValidThread()); | |
| 146 | |
| 147 double result = 0.0; | |
| 148 | |
| 149 const base::Value* value = GetPreferenceValue(path); | |
| 150 if (!value) { | |
| 151 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 152 return result; | |
| 153 } | |
| 154 bool rv = value->GetAsDouble(&result); | |
| 155 DCHECK(rv); | |
| 156 return result; | |
| 157 } | |
| 158 | |
| 159 std::string PrefService::GetString(const std::string& path) const { | |
| 160 DCHECK(CalledOnValidThread()); | |
| 161 | |
| 162 std::string result; | |
| 163 | |
| 164 const base::Value* value = GetPreferenceValue(path); | |
| 165 if (!value) { | |
| 166 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 167 return result; | |
| 168 } | |
| 169 bool rv = value->GetAsString(&result); | |
| 170 DCHECK(rv); | |
| 171 return result; | |
| 172 } | |
| 173 | |
| 174 base::FilePath PrefService::GetFilePath(const std::string& path) const { | |
| 175 DCHECK(CalledOnValidThread()); | |
| 176 | |
| 177 base::FilePath result; | |
| 178 | |
| 179 const base::Value* value = GetPreferenceValue(path); | |
| 180 if (!value) { | |
| 181 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 182 return base::FilePath(result); | |
| 183 } | |
| 184 bool rv = base::GetValueAsFilePath(*value, &result); | |
| 185 DCHECK(rv); | |
| 186 return result; | |
| 187 } | |
| 188 | |
| 189 bool PrefService::HasPrefPath(const std::string& path) const { | |
| 190 const Preference* pref = FindPreference(path); | |
| 191 return pref && !pref->IsDefaultValue(); | |
| 192 } | |
| 193 | |
| 194 scoped_ptr<base::DictionaryValue> PrefService::GetPreferenceValues() const { | |
| 195 DCHECK(CalledOnValidThread()); | |
| 196 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 197 for (const auto& it : *pref_registry_) { | |
| 198 out->Set(it.first, GetPreferenceValue(it.first)->CreateDeepCopy()); | |
| 199 } | |
| 200 return out.Pass(); | |
| 201 } | |
| 202 | |
| 203 scoped_ptr<base::DictionaryValue> PrefService::GetPreferenceValuesOmitDefaults() | |
| 204 const { | |
| 205 DCHECK(CalledOnValidThread()); | |
| 206 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 207 for (const auto& it : *pref_registry_) { | |
| 208 const Preference* pref = FindPreference(it.first); | |
| 209 if (pref->IsDefaultValue()) | |
| 210 continue; | |
| 211 out->Set(it.first, pref->GetValue()->CreateDeepCopy()); | |
| 212 } | |
| 213 return out.Pass(); | |
| 214 } | |
| 215 | |
| 216 scoped_ptr<base::DictionaryValue> | |
| 217 PrefService::GetPreferenceValuesWithoutPathExpansion() const { | |
| 218 DCHECK(CalledOnValidThread()); | |
| 219 scoped_ptr<base::DictionaryValue> out(new base::DictionaryValue); | |
| 220 for (const auto& it : *pref_registry_) { | |
| 221 const base::Value* value = GetPreferenceValue(it.first); | |
| 222 DCHECK(value); | |
| 223 out->SetWithoutPathExpansion(it.first, value->CreateDeepCopy()); | |
| 224 } | |
| 225 return out.Pass(); | |
| 226 } | |
| 227 | |
| 228 const PrefService::Preference* PrefService::FindPreference( | |
| 229 const std::string& pref_name) const { | |
| 230 DCHECK(CalledOnValidThread()); | |
| 231 PreferenceMap::iterator it = prefs_map_.find(pref_name); | |
| 232 if (it != prefs_map_.end()) | |
| 233 return &(it->second); | |
| 234 const base::Value* default_value = NULL; | |
| 235 if (!pref_registry_->defaults()->GetValue(pref_name, &default_value)) | |
| 236 return NULL; | |
| 237 it = prefs_map_.insert( | |
| 238 std::make_pair(pref_name, Preference( | |
| 239 this, pref_name, default_value->GetType()))).first; | |
| 240 return &(it->second); | |
| 241 } | |
| 242 | |
| 243 bool PrefService::ReadOnly() const { | |
| 244 return user_pref_store_->ReadOnly(); | |
| 245 } | |
| 246 | |
| 247 PrefService::PrefInitializationStatus PrefService::GetInitializationStatus() | |
| 248 const { | |
| 249 if (!user_pref_store_->IsInitializationComplete()) | |
| 250 return INITIALIZATION_STATUS_WAITING; | |
| 251 | |
| 252 switch (user_pref_store_->GetReadError()) { | |
| 253 case PersistentPrefStore::PREF_READ_ERROR_NONE: | |
| 254 return INITIALIZATION_STATUS_SUCCESS; | |
| 255 case PersistentPrefStore::PREF_READ_ERROR_NO_FILE: | |
| 256 return INITIALIZATION_STATUS_CREATED_NEW_PREF_STORE; | |
| 257 default: | |
| 258 return INITIALIZATION_STATUS_ERROR; | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 bool PrefService::IsManagedPreference(const std::string& pref_name) const { | |
| 263 const Preference* pref = FindPreference(pref_name); | |
| 264 return pref && pref->IsManaged(); | |
| 265 } | |
| 266 | |
| 267 bool PrefService::IsPreferenceManagedByCustodian( | |
| 268 const std::string& pref_name) const { | |
| 269 const Preference* pref = FindPreference(pref_name); | |
| 270 return pref && pref->IsManagedByCustodian(); | |
| 271 } | |
| 272 | |
| 273 bool PrefService::IsUserModifiablePreference( | |
| 274 const std::string& pref_name) const { | |
| 275 const Preference* pref = FindPreference(pref_name); | |
| 276 return pref && pref->IsUserModifiable(); | |
| 277 } | |
| 278 | |
| 279 const base::DictionaryValue* PrefService::GetDictionary( | |
| 280 const std::string& path) const { | |
| 281 DCHECK(CalledOnValidThread()); | |
| 282 | |
| 283 const base::Value* value = GetPreferenceValue(path); | |
| 284 if (!value) { | |
| 285 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 286 return NULL; | |
| 287 } | |
| 288 if (value->GetType() != base::Value::TYPE_DICTIONARY) { | |
| 289 NOTREACHED(); | |
| 290 return NULL; | |
| 291 } | |
| 292 return static_cast<const base::DictionaryValue*>(value); | |
| 293 } | |
| 294 | |
| 295 const base::Value* PrefService::GetUserPrefValue( | |
| 296 const std::string& path) const { | |
| 297 DCHECK(CalledOnValidThread()); | |
| 298 | |
| 299 const Preference* pref = FindPreference(path); | |
| 300 if (!pref) { | |
| 301 NOTREACHED() << "Trying to get an unregistered pref: " << path; | |
| 302 return NULL; | |
| 303 } | |
| 304 | |
| 305 // Look for an existing preference in the user store. If it doesn't | |
| 306 // exist, return NULL. | |
| 307 base::Value* value = NULL; | |
| 308 if (!user_pref_store_->GetMutableValue(path, &value)) | |
| 309 return NULL; | |
| 310 | |
| 311 if (!value->IsType(pref->GetType())) { | |
| 312 NOTREACHED() << "Pref value type doesn't match registered type."; | |
| 313 return NULL; | |
| 314 } | |
| 315 | |
| 316 return value; | |
| 317 } | |
| 318 | |
| 319 void PrefService::SetDefaultPrefValue(const std::string& path, | |
| 320 base::Value* value) { | |
| 321 DCHECK(CalledOnValidThread()); | |
| 322 pref_registry_->SetDefaultPrefValue(path, value); | |
| 323 } | |
| 324 | |
| 325 const base::Value* PrefService::GetDefaultPrefValue( | |
| 326 const std::string& path) const { | |
| 327 DCHECK(CalledOnValidThread()); | |
| 328 // Lookup the preference in the default store. | |
| 329 const base::Value* value = NULL; | |
| 330 if (!pref_registry_->defaults()->GetValue(path, &value)) { | |
| 331 NOTREACHED() << "Default value missing for pref: " << path; | |
| 332 return NULL; | |
| 333 } | |
| 334 return value; | |
| 335 } | |
| 336 | |
| 337 const base::ListValue* PrefService::GetList(const std::string& path) const { | |
| 338 DCHECK(CalledOnValidThread()); | |
| 339 | |
| 340 const base::Value* value = GetPreferenceValue(path); | |
| 341 if (!value) { | |
| 342 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 343 return NULL; | |
| 344 } | |
| 345 if (value->GetType() != base::Value::TYPE_LIST) { | |
| 346 NOTREACHED(); | |
| 347 return NULL; | |
| 348 } | |
| 349 return static_cast<const base::ListValue*>(value); | |
| 350 } | |
| 351 | |
| 352 void PrefService::AddPrefObserver(const std::string& path, PrefObserver* obs) { | |
| 353 pref_notifier_->AddPrefObserver(path, obs); | |
| 354 } | |
| 355 | |
| 356 void PrefService::RemovePrefObserver(const std::string& path, | |
| 357 PrefObserver* obs) { | |
| 358 pref_notifier_->RemovePrefObserver(path, obs); | |
| 359 } | |
| 360 | |
| 361 void PrefService::AddPrefInitObserver(base::Callback<void(bool)> obs) { | |
| 362 pref_notifier_->AddInitObserver(obs); | |
| 363 } | |
| 364 | |
| 365 PrefRegistry* PrefService::DeprecatedGetPrefRegistry() { | |
| 366 return pref_registry_.get(); | |
| 367 } | |
| 368 | |
| 369 void PrefService::ClearPref(const std::string& path) { | |
| 370 DCHECK(CalledOnValidThread()); | |
| 371 | |
| 372 const Preference* pref = FindPreference(path); | |
| 373 if (!pref) { | |
| 374 NOTREACHED() << "Trying to clear an unregistered pref: " << path; | |
| 375 return; | |
| 376 } | |
| 377 user_pref_store_->RemoveValue(path, GetWriteFlags(pref)); | |
| 378 } | |
| 379 | |
| 380 void PrefService::Set(const std::string& path, const base::Value& value) { | |
| 381 SetUserPrefValue(path, value.DeepCopy()); | |
| 382 } | |
| 383 | |
| 384 void PrefService::SetBoolean(const std::string& path, bool value) { | |
| 385 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 386 } | |
| 387 | |
| 388 void PrefService::SetInteger(const std::string& path, int value) { | |
| 389 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 390 } | |
| 391 | |
| 392 void PrefService::SetDouble(const std::string& path, double value) { | |
| 393 SetUserPrefValue(path, new base::FundamentalValue(value)); | |
| 394 } | |
| 395 | |
| 396 void PrefService::SetString(const std::string& path, const std::string& value) { | |
| 397 SetUserPrefValue(path, new base::StringValue(value)); | |
| 398 } | |
| 399 | |
| 400 void PrefService::SetFilePath(const std::string& path, | |
| 401 const base::FilePath& value) { | |
| 402 SetUserPrefValue(path, base::CreateFilePathValue(value)); | |
| 403 } | |
| 404 | |
| 405 void PrefService::SetInt64(const std::string& path, int64 value) { | |
| 406 SetUserPrefValue(path, new base::StringValue(base::Int64ToString(value))); | |
| 407 } | |
| 408 | |
| 409 int64 PrefService::GetInt64(const std::string& path) const { | |
| 410 DCHECK(CalledOnValidThread()); | |
| 411 | |
| 412 const base::Value* value = GetPreferenceValue(path); | |
| 413 if (!value) { | |
| 414 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 415 return 0; | |
| 416 } | |
| 417 std::string result("0"); | |
| 418 bool rv = value->GetAsString(&result); | |
| 419 DCHECK(rv); | |
| 420 | |
| 421 int64 val; | |
| 422 base::StringToInt64(result, &val); | |
| 423 return val; | |
| 424 } | |
| 425 | |
| 426 void PrefService::SetUint64(const std::string& path, uint64 value) { | |
| 427 SetUserPrefValue(path, new base::StringValue(base::Uint64ToString(value))); | |
| 428 } | |
| 429 | |
| 430 uint64 PrefService::GetUint64(const std::string& path) const { | |
| 431 DCHECK(CalledOnValidThread()); | |
| 432 | |
| 433 const base::Value* value = GetPreferenceValue(path); | |
| 434 if (!value) { | |
| 435 NOTREACHED() << "Trying to read an unregistered pref: " << path; | |
| 436 return 0; | |
| 437 } | |
| 438 std::string result("0"); | |
| 439 bool rv = value->GetAsString(&result); | |
| 440 DCHECK(rv); | |
| 441 | |
| 442 uint64 val; | |
| 443 base::StringToUint64(result, &val); | |
| 444 return val; | |
| 445 } | |
| 446 | |
| 447 base::Value* PrefService::GetMutableUserPref(const std::string& path, | |
| 448 base::Value::Type type) { | |
| 449 CHECK(type == base::Value::TYPE_DICTIONARY || type == base::Value::TYPE_LIST); | |
| 450 DCHECK(CalledOnValidThread()); | |
| 451 | |
| 452 const Preference* pref = FindPreference(path); | |
| 453 if (!pref) { | |
| 454 NOTREACHED() << "Trying to get an unregistered pref: " << path; | |
| 455 return NULL; | |
| 456 } | |
| 457 if (pref->GetType() != type) { | |
| 458 NOTREACHED() << "Wrong type for GetMutableValue: " << path; | |
| 459 return NULL; | |
| 460 } | |
| 461 | |
| 462 // Look for an existing preference in the user store. If it doesn't | |
| 463 // exist or isn't the correct type, create a new user preference. | |
| 464 base::Value* value = NULL; | |
| 465 if (!user_pref_store_->GetMutableValue(path, &value) || | |
| 466 !value->IsType(type)) { | |
| 467 if (type == base::Value::TYPE_DICTIONARY) { | |
| 468 value = new base::DictionaryValue; | |
| 469 } else if (type == base::Value::TYPE_LIST) { | |
| 470 value = new base::ListValue; | |
| 471 } else { | |
| 472 NOTREACHED(); | |
| 473 } | |
| 474 user_pref_store_->SetValueSilently(path, make_scoped_ptr(value), | |
| 475 GetWriteFlags(pref)); | |
| 476 } | |
| 477 return value; | |
| 478 } | |
| 479 | |
| 480 void PrefService::ReportUserPrefChanged(const std::string& key) { | |
| 481 DCHECK(CalledOnValidThread()); | |
| 482 user_pref_store_->ReportValueChanged(key, GetWriteFlags(FindPreference(key))); | |
| 483 } | |
| 484 | |
| 485 void PrefService::SetUserPrefValue(const std::string& path, | |
| 486 base::Value* new_value) { | |
| 487 scoped_ptr<base::Value> owned_value(new_value); | |
| 488 DCHECK(CalledOnValidThread()); | |
| 489 | |
| 490 const Preference* pref = FindPreference(path); | |
| 491 if (!pref) { | |
| 492 NOTREACHED() << "Trying to write an unregistered pref: " << path; | |
| 493 return; | |
| 494 } | |
| 495 if (pref->GetType() != new_value->GetType()) { | |
| 496 NOTREACHED() << "Trying to set pref " << path | |
| 497 << " of type " << pref->GetType() | |
| 498 << " to value of type " << new_value->GetType(); | |
| 499 return; | |
| 500 } | |
| 501 | |
| 502 user_pref_store_->SetValue(path, owned_value.Pass(), GetWriteFlags(pref)); | |
| 503 } | |
| 504 | |
| 505 void PrefService::UpdateCommandLinePrefStore(PrefStore* command_line_store) { | |
| 506 pref_value_store_->UpdateCommandLinePrefStore(command_line_store); | |
| 507 } | |
| 508 | |
| 509 /////////////////////////////////////////////////////////////////////////////// | |
| 510 // PrefService::Preference | |
| 511 | |
| 512 PrefService::Preference::Preference(const PrefService* service, | |
| 513 const std::string& name, | |
| 514 base::Value::Type type) | |
| 515 : name_(name), type_(type), pref_service_(service) { | |
| 516 DCHECK(service); | |
| 517 // Cache the registration flags at creation time to avoid multiple map lookups | |
| 518 // later. | |
| 519 registration_flags_ = service->pref_registry_->GetRegistrationFlags(name_); | |
| 520 } | |
| 521 | |
| 522 const std::string PrefService::Preference::name() const { | |
| 523 return name_; | |
| 524 } | |
| 525 | |
| 526 base::Value::Type PrefService::Preference::GetType() const { | |
| 527 return type_; | |
| 528 } | |
| 529 | |
| 530 const base::Value* PrefService::Preference::GetValue() const { | |
| 531 const base::Value* result= pref_service_->GetPreferenceValue(name_); | |
| 532 DCHECK(result) << "Must register pref before getting its value"; | |
| 533 return result; | |
| 534 } | |
| 535 | |
| 536 const base::Value* PrefService::Preference::GetRecommendedValue() const { | |
| 537 DCHECK(pref_service_->FindPreference(name_)) | |
| 538 << "Must register pref before getting its value"; | |
| 539 | |
| 540 const base::Value* found_value = NULL; | |
| 541 if (pref_value_store()->GetRecommendedValue(name_, type_, &found_value)) { | |
| 542 DCHECK(found_value->IsType(type_)); | |
| 543 return found_value; | |
| 544 } | |
| 545 | |
| 546 // The pref has no recommended value. | |
| 547 return NULL; | |
| 548 } | |
| 549 | |
| 550 bool PrefService::Preference::IsManaged() const { | |
| 551 return pref_value_store()->PrefValueInManagedStore(name_); | |
| 552 } | |
| 553 | |
| 554 bool PrefService::Preference::IsManagedByCustodian() const { | |
| 555 return pref_value_store()->PrefValueInSupervisedStore(name_.c_str()); | |
| 556 } | |
| 557 | |
| 558 bool PrefService::Preference::IsRecommended() const { | |
| 559 return pref_value_store()->PrefValueFromRecommendedStore(name_); | |
| 560 } | |
| 561 | |
| 562 bool PrefService::Preference::HasExtensionSetting() const { | |
| 563 return pref_value_store()->PrefValueInExtensionStore(name_); | |
| 564 } | |
| 565 | |
| 566 bool PrefService::Preference::HasUserSetting() const { | |
| 567 return pref_value_store()->PrefValueInUserStore(name_); | |
| 568 } | |
| 569 | |
| 570 bool PrefService::Preference::IsExtensionControlled() const { | |
| 571 return pref_value_store()->PrefValueFromExtensionStore(name_); | |
| 572 } | |
| 573 | |
| 574 bool PrefService::Preference::IsUserControlled() const { | |
| 575 return pref_value_store()->PrefValueFromUserStore(name_); | |
| 576 } | |
| 577 | |
| 578 bool PrefService::Preference::IsDefaultValue() const { | |
| 579 return pref_value_store()->PrefValueFromDefaultStore(name_); | |
| 580 } | |
| 581 | |
| 582 bool PrefService::Preference::IsUserModifiable() const { | |
| 583 return pref_value_store()->PrefValueUserModifiable(name_); | |
| 584 } | |
| 585 | |
| 586 bool PrefService::Preference::IsExtensionModifiable() const { | |
| 587 return pref_value_store()->PrefValueExtensionModifiable(name_); | |
| 588 } | |
| 589 | |
| 590 const base::Value* PrefService::GetPreferenceValue( | |
| 591 const std::string& path) const { | |
| 592 DCHECK(CalledOnValidThread()); | |
| 593 | |
| 594 // TODO(battre): This is a check for crbug.com/435208. After analyzing some | |
| 595 // crash dumps it looks like the PrefService is accessed even though it has | |
| 596 // been cleared already. | |
| 597 CHECK(pref_registry_); | |
| 598 CHECK(pref_registry_->defaults()); | |
| 599 CHECK(pref_value_store_); | |
| 600 | |
| 601 const base::Value* default_value = NULL; | |
| 602 if (pref_registry_->defaults()->GetValue(path, &default_value)) { | |
| 603 const base::Value* found_value = NULL; | |
| 604 base::Value::Type default_type = default_value->GetType(); | |
| 605 if (pref_value_store_->GetValue(path, default_type, &found_value)) { | |
| 606 DCHECK(found_value->IsType(default_type)); | |
| 607 return found_value; | |
| 608 } else { | |
| 609 // Every registered preference has at least a default value. | |
| 610 NOTREACHED() << "no valid value found for registered pref " << path; | |
| 611 } | |
| 612 } | |
| 613 | |
| 614 return NULL; | |
| 615 } | |
| OLD | NEW |
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