third_party/libaddressinput/chromium/chrome_storage_impl.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 THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_STORAGE_IMPL_H_
   6 #define THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_STORAGE_IMPL_H_
   7
   8 #include <list>
   9 #include <string>
  10
  11 #include "base/memory/scoped_vector.h"
  12 #include "base/prefs/pref_store.h"
  13 #include "base/scoped_observer.h"
  14 #include "third_party/libaddressinput/src/cpp/include/libaddressinput/storage.h"
  15
  16 class WriteablePrefStore;
  17
  18 namespace autofill {
  19
  20 // An implementation of the Storage interface which passes through to an
  21 // underlying WriteablePrefStore.
  22 class ChromeStorageImpl : public ::i18n::addressinput::Storage,
  23                           public PrefStore::Observer {
  24  public:
  25   // |store| must outlive |this|.
  26   explicit ChromeStorageImpl(WriteablePrefStore* store);
  27   virtual ~ChromeStorageImpl();
  28
  29   // ::i18n::addressinput::Storage implementation.
  30   virtual void Put(const std::string& key, std::string* data) override;
  31   virtual void Get(const std::string& key, const Callback& data_ready)
  32       const override;
  33
  34   // PrefStore::Observer implementation.
  35   virtual void OnPrefValueChanged(const std::string& key) override;
  36   virtual void OnInitializationCompleted(bool succeeded) override;
  37
  38  private:
  39   struct Request {
  40     Request(const std::string& key, const Callback& callback);
  41
  42     std::string key;
  43     const Callback& callback;
  44   };
  45
  46   // Non-const version of Get().
  47   void DoGet(const std::string& key, const Callback& data_ready);
  48
  49   WriteablePrefStore* backing_store_;  // weak
  50
  51   // Get requests that haven't yet been serviced.
  52   ScopedVector<Request> outstanding_requests_;
  53
  54   ScopedObserver<PrefStore, ChromeStorageImpl> scoped_observer_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(ChromeStorageImpl);
  57 };
  58
  59 }  // namespace autofill
  60
  61 #endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_STORAGE_IMPL_H_