base/prefs/writeable_pref_store.h

   1 // Copyright 2014 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 BASE_PREFS_WRITEABLE_PREF_STORE_H_
   6 #define BASE_PREFS_WRITEABLE_PREF_STORE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/prefs/pref_store.h"
  12
  13 namespace base {
  14 class Value;
  15 }
  16
  17 // A pref store that can be written to as well as read from.
  18 class BASE_PREFS_EXPORT WriteablePrefStore : public PrefStore {
  19  public:
  20   WriteablePrefStore() {}
  21
  22   // Sets a |value| for |key| in the store. Assumes ownership of |value|, which
  23   // must be non-NULL.
  24   virtual void SetValue(const std::string& key, base::Value* value) = 0;
  25
  26   // Removes the value for |key|.
  27   virtual void RemoveValue(const std::string& key) = 0;
  28
  29  protected:
  30   virtual ~WriteablePrefStore() {}
  31
  32  private:
  33   DISALLOW_COPY_AND_ASSIGN(WriteablePrefStore);
  34 };
  35
  36 #endif  // BASE_PREFS_WRITEABLE_PREF_STORE_H_