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
16class WriteablePrefStore;
17
18namespace autofill {
19
20// An implementation of the Storage interface which passes through to an
21// underlying WriteablePrefStore.
22class 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_
62