1 // Copyright (c) 2013 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 #ifndef ANDROID_WEBVIEW_BROWSER_AW_PREF_STORE_H_ 6 #define ANDROID_WEBVIEW_BROWSER_AW_PREF_STORE_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "base/observer_list.h" 13 #include "base/prefs/persistent_pref_store.h" 14 #include "base/prefs/pref_value_map.h" 15 16 // A light-weight prefstore implementation that keeps preferences 17 // in a memory backed store. This is not a persistent prefstore -- we 18 // subclass the PersistentPrefStore here since it is needed by the 19 // PrefService, which in turn is needed by the Autofill component. 20 class AwPrefStore : public PersistentPrefStore { 21 public: 22 AwPrefStore(); 23 24 // Overriden from PrefStore. 25 virtual bool GetValue(const std::string& key, 26 const base::Value** result) const OVERRIDE; 27 virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE; 28 virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE; 29 virtual bool HasObservers() const OVERRIDE; 30 virtual bool IsInitializationComplete() const OVERRIDE; 31 32 // PersistentPrefStore overrides: 33 virtual bool GetMutableValue(const std::string& key, 34 base::Value** result) OVERRIDE; 35 virtual void ReportValueChanged(const std::string& key) OVERRIDE; 36 virtual void SetValue(const std::string& key, base::Value* value) OVERRIDE; 37 virtual void SetValueSilently(const std::string& key, 38 base::Value* value) OVERRIDE; 39 virtual void RemoveValue(const std::string& key) OVERRIDE; 40 virtual bool ReadOnly() const OVERRIDE; 41 virtual PrefReadError GetReadError() const OVERRIDE; 42 virtual PersistentPrefStore::PrefReadError ReadPrefs() OVERRIDE; 43 virtual void ReadPrefsAsync(ReadErrorDelegate* error_delegate) OVERRIDE; CommitPendingWrite()44 virtual void CommitPendingWrite() OVERRIDE {} 45 46 protected: 47 virtual ~AwPrefStore(); 48 49 private: 50 // Stores the preference values. 51 PrefValueMap prefs_; 52 53 ObserverList<PrefStore::Observer, true> observers_; 54 55 DISALLOW_COPY_AND_ASSIGN(AwPrefStore); 56 }; 57 58 #endif // ANDROID_WEBVIEW_BROWSER_AW_PREF_STORE_H_ 59