src/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/chromium/cpp/include/libaddressinput/storage.h"
  15 #include "third_party/libaddressinput/chromium/cpp/include/libaddressinput/util/scoped_ptr.h"
  16
  17 class WriteablePrefStore;
  18
  19 namespace autofill {
  20
  21 // An implementation of the Storage interface which passes through to an
  22 // underlying WriteablePrefStore.
  23 class ChromeStorageImpl : public ::i18n::addressinput::Storage,
  24                           public PrefStore::Observer {
  25  public:
  26   // |store| must outlive |this|.
  27   explicit ChromeStorageImpl(WriteablePrefStore* store);
  28   virtual ~ChromeStorageImpl();
  29
  30   // ::i18n::addressinput::Storage implementation.
  31   virtual void Put(const std::string& key, scoped_ptr<std::string> data)
  32       OVERRIDE;
  33   virtual void Get(const std::string& key, scoped_ptr<Callback> data_ready)
  34       const OVERRIDE;
  35
  36   // PrefStore::Observer implementation.
  37   virtual void OnPrefValueChanged(const std::string& key) OVERRIDE;
  38   virtual void OnInitializationCompleted(bool succeeded) OVERRIDE;
  39
  40  private:
  41   struct Request {
  42     Request(const std::string& key, scoped_ptr<Callback> callback);
  43
  44     std::string key;
  45     scoped_ptr<Callback> callback;
  46   };
  47
  48   // Non-const version of Get().
  49   void DoGet(const std::string& key, scoped_ptr<Callback> data_ready);
  50
  51   WriteablePrefStore* backing_store_;  // weak
  52
  53   // Get requests that haven't yet been serviced.
  54   ScopedVector<Request> outstanding_requests_;
  55
  56   ScopedObserver<PrefStore, ChromeStorageImpl> scoped_observer_;
  57
  58   DISALLOW_COPY_AND_ASSIGN(ChromeStorageImpl);
  59 };
  60
  61 }  // namespace autofill
  62
  63 #endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_STORAGE_IMPL_H_