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Unified Diff: base/prefs/pref_value_store.cc

Issue 1648403002: Move base/prefs to components/prefs (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 11 months ago
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Index: base/prefs/pref_value_store.cc
diff --git a/base/prefs/pref_value_store.cc b/base/prefs/pref_value_store.cc
deleted file mode 100644
index fe7cd67d08eb5970e36f50cf4c849ad1b842454e..0000000000000000000000000000000000000000
--- a/base/prefs/pref_value_store.cc
+++ /dev/null
@@ -1,290 +0,0 @@
-// 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 "base/prefs/pref_value_store.h"
-
-#include <stddef.h>
-
-#include "base/logging.h"
-#include "base/prefs/pref_notifier.h"
-#include "base/prefs/pref_observer.h"
-
-PrefValueStore::PrefStoreKeeper::PrefStoreKeeper()
- : pref_value_store_(NULL),
- type_(PrefValueStore::INVALID_STORE) {
-}
-
-PrefValueStore::PrefStoreKeeper::~PrefStoreKeeper() {
- if (pref_store_.get()) {
- pref_store_->RemoveObserver(this);
- pref_store_ = NULL;
- }
- pref_value_store_ = NULL;
-}
-
-void PrefValueStore::PrefStoreKeeper::Initialize(
- PrefValueStore* store,
- PrefStore* pref_store,
- PrefValueStore::PrefStoreType type) {
- if (pref_store_.get()) {
- pref_store_->RemoveObserver(this);
- DCHECK(!pref_store_->HasObservers());
- }
- type_ = type;
- pref_value_store_ = store;
- pref_store_ = pref_store;
- if (pref_store_.get())
- pref_store_->AddObserver(this);
-}
-
-void PrefValueStore::PrefStoreKeeper::OnPrefValueChanged(
- const std::string& key) {
- pref_value_store_->OnPrefValueChanged(type_, key);
-}
-
-void PrefValueStore::PrefStoreKeeper::OnInitializationCompleted(
- bool succeeded) {
- pref_value_store_->OnInitializationCompleted(type_, succeeded);
-}
-
-PrefValueStore::PrefValueStore(PrefStore* managed_prefs,
- PrefStore* supervised_user_prefs,
- PrefStore* extension_prefs,
- PrefStore* command_line_prefs,
- PrefStore* user_prefs,
- PrefStore* recommended_prefs,
- PrefStore* default_prefs,
- PrefNotifier* pref_notifier)
- : pref_notifier_(pref_notifier),
- initialization_failed_(false) {
- InitPrefStore(MANAGED_STORE, managed_prefs);
- InitPrefStore(SUPERVISED_USER_STORE, supervised_user_prefs);
- InitPrefStore(EXTENSION_STORE, extension_prefs);
- InitPrefStore(COMMAND_LINE_STORE, command_line_prefs);
- InitPrefStore(USER_STORE, user_prefs);
- InitPrefStore(RECOMMENDED_STORE, recommended_prefs);
- InitPrefStore(DEFAULT_STORE, default_prefs);
-
- CheckInitializationCompleted();
-}
-
-PrefValueStore::~PrefValueStore() {}
-
-PrefValueStore* PrefValueStore::CloneAndSpecialize(
- PrefStore* managed_prefs,
- PrefStore* supervised_user_prefs,
- PrefStore* extension_prefs,
- PrefStore* command_line_prefs,
- PrefStore* user_prefs,
- PrefStore* recommended_prefs,
- PrefStore* default_prefs,
- PrefNotifier* pref_notifier) {
- DCHECK(pref_notifier);
- if (!managed_prefs)
- managed_prefs = GetPrefStore(MANAGED_STORE);
- if (!supervised_user_prefs)
- supervised_user_prefs = GetPrefStore(SUPERVISED_USER_STORE);
- if (!extension_prefs)
- extension_prefs = GetPrefStore(EXTENSION_STORE);
- if (!command_line_prefs)
- command_line_prefs = GetPrefStore(COMMAND_LINE_STORE);
- if (!user_prefs)
- user_prefs = GetPrefStore(USER_STORE);
- if (!recommended_prefs)
- recommended_prefs = GetPrefStore(RECOMMENDED_STORE);
- if (!default_prefs)
- default_prefs = GetPrefStore(DEFAULT_STORE);
-
- return new PrefValueStore(
- managed_prefs, supervised_user_prefs, extension_prefs, command_line_prefs,
- user_prefs, recommended_prefs, default_prefs, pref_notifier);
-}
-
-void PrefValueStore::set_callback(const PrefChangedCallback& callback) {
- pref_changed_callback_ = callback;
-}
-
-bool PrefValueStore::GetValue(const std::string& name,
- base::Value::Type type,
- const base::Value** out_value) const {
- // Check the |PrefStore|s in order of their priority from highest to lowest,
- // looking for the first preference value with the given |name| and |type|.
- for (size_t i = 0; i <= PREF_STORE_TYPE_MAX; ++i) {
- if (GetValueFromStoreWithType(name, type, static_cast<PrefStoreType>(i),
- out_value))
- return true;
- }
- return false;
-}
-
-bool PrefValueStore::GetRecommendedValue(const std::string& name,
- base::Value::Type type,
- const base::Value** out_value) const {
- return GetValueFromStoreWithType(name, type, RECOMMENDED_STORE, out_value);
-}
-
-void PrefValueStore::NotifyPrefChanged(
- const std::string& path,
- PrefValueStore::PrefStoreType new_store) {
- DCHECK(new_store != INVALID_STORE);
- // A notification is sent when the pref value in any store changes. If this
- // store is currently being overridden by a higher-priority store, the
- // effective value of the pref will not have changed.
- pref_notifier_->OnPreferenceChanged(path);
- if (!pref_changed_callback_.is_null())
- pref_changed_callback_.Run(path);
-}
-
-bool PrefValueStore::PrefValueInManagedStore(const std::string& name) const {
- return PrefValueInStore(name, MANAGED_STORE);
-}
-
-bool PrefValueStore::PrefValueInSupervisedStore(const std::string& name) const {
- return PrefValueInStore(name, SUPERVISED_USER_STORE);
-}
-
-bool PrefValueStore::PrefValueInExtensionStore(const std::string& name) const {
- return PrefValueInStore(name, EXTENSION_STORE);
-}
-
-bool PrefValueStore::PrefValueInUserStore(const std::string& name) const {
- return PrefValueInStore(name, USER_STORE);
-}
-
-bool PrefValueStore::PrefValueFromExtensionStore(
- const std::string& name) const {
- return ControllingPrefStoreForPref(name) == EXTENSION_STORE;
-}
-
-bool PrefValueStore::PrefValueFromUserStore(const std::string& name) const {
- return ControllingPrefStoreForPref(name) == USER_STORE;
-}
-
-bool PrefValueStore::PrefValueFromRecommendedStore(
- const std::string& name) const {
- return ControllingPrefStoreForPref(name) == RECOMMENDED_STORE;
-}
-
-bool PrefValueStore::PrefValueFromDefaultStore(const std::string& name) const {
- return ControllingPrefStoreForPref(name) == DEFAULT_STORE;
-}
-
-bool PrefValueStore::PrefValueUserModifiable(const std::string& name) const {
- PrefStoreType effective_store = ControllingPrefStoreForPref(name);
- return effective_store >= USER_STORE ||
- effective_store == INVALID_STORE;
-}
-
-bool PrefValueStore::PrefValueExtensionModifiable(
- const std::string& name) const {
- PrefStoreType effective_store = ControllingPrefStoreForPref(name);
- return effective_store >= EXTENSION_STORE ||
- effective_store == INVALID_STORE;
-}
-
-void PrefValueStore::UpdateCommandLinePrefStore(PrefStore* command_line_prefs) {
- InitPrefStore(COMMAND_LINE_STORE, command_line_prefs);
-}
-
-bool PrefValueStore::PrefValueInStore(
- const std::string& name,
- PrefValueStore::PrefStoreType store) const {
- // Declare a temp Value* and call GetValueFromStore,
- // ignoring the output value.
- const base::Value* tmp_value = NULL;
- return GetValueFromStore(name, store, &tmp_value);
-}
-
-bool PrefValueStore::PrefValueInStoreRange(
- const std::string& name,
- PrefValueStore::PrefStoreType first_checked_store,
- PrefValueStore::PrefStoreType last_checked_store) const {
- if (first_checked_store > last_checked_store) {
- NOTREACHED();
- return false;
- }
-
- for (size_t i = first_checked_store;
- i <= static_cast<size_t>(last_checked_store); ++i) {
- if (PrefValueInStore(name, static_cast<PrefStoreType>(i)))
- return true;
- }
- return false;
-}
-
-PrefValueStore::PrefStoreType PrefValueStore::ControllingPrefStoreForPref(
- const std::string& name) const {
- for (size_t i = 0; i <= PREF_STORE_TYPE_MAX; ++i) {
- if (PrefValueInStore(name, static_cast<PrefStoreType>(i)))
- return static_cast<PrefStoreType>(i);
- }
- return INVALID_STORE;
-}
-
-bool PrefValueStore::GetValueFromStore(const std::string& name,
- PrefValueStore::PrefStoreType store_type,
- const base::Value** out_value) const {
- // Only return true if we find a value and it is the correct type, so stale
- // values with the incorrect type will be ignored.
- const PrefStore* store = GetPrefStore(static_cast<PrefStoreType>(store_type));
- if (store && store->GetValue(name, out_value))
- return true;
-
- // No valid value found for the given preference name: set the return value
- // to false.
- *out_value = NULL;
- return false;
-}
-
-bool PrefValueStore::GetValueFromStoreWithType(
- const std::string& name,
- base::Value::Type type,
- PrefStoreType store,
- const base::Value** out_value) const {
- if (GetValueFromStore(name, store, out_value)) {
- if ((*out_value)->IsType(type))
- return true;
-
- LOG(WARNING) << "Expected type for " << name << " is " << type
- << " but got " << (*out_value)->GetType()
- << " in store " << store;
- }
-
- *out_value = NULL;
- return false;
-}
-
-void PrefValueStore::OnPrefValueChanged(PrefValueStore::PrefStoreType type,
- const std::string& key) {
- NotifyPrefChanged(key, type);
-}
-
-void PrefValueStore::OnInitializationCompleted(
- PrefValueStore::PrefStoreType type, bool succeeded) {
- if (initialization_failed_)
- return;
- if (!succeeded) {
- initialization_failed_ = true;
- pref_notifier_->OnInitializationCompleted(false);
- return;
- }
- CheckInitializationCompleted();
-}
-
-void PrefValueStore::InitPrefStore(PrefValueStore::PrefStoreType type,
- PrefStore* pref_store) {
- pref_stores_[type].Initialize(this, pref_store, type);
-}
-
-void PrefValueStore::CheckInitializationCompleted() {
- if (initialization_failed_)
- return;
- for (size_t i = 0; i <= PREF_STORE_TYPE_MAX; ++i) {
- scoped_refptr<PrefStore> store =
- GetPrefStore(static_cast<PrefStoreType>(i));
- if (store.get() && !store->IsInitializationComplete())
- return;
- }
- pref_notifier_->OnInitializationCompleted(true);
-}
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