Don't show supervised user as "already on this device" while they're being imported.
[chromium-blink-merge.git] / sync / internal_api / public / attachments / attachment_store_frontend.h
blob051920d03af434148ee86dbfc548b54a658148cb
1 // Copyright 2015 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.
5 #ifndef SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_
6 #define SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_
8 #include "base/memory/ref_counted.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/threading/non_thread_safe.h"
11 #include "sync/api/attachments/attachment_store.h"
13 namespace base {
14 class SequencedTaskRunner;
15 } // namespace base
17 namespace syncer {
19 class AttachmentStoreBackend;
21 // AttachmentStoreFrontend is helper to post AttachmentStore calls to backend on
22 // different thread. Backend is expected to know on which thread to post
23 // callbacks with results.
24 // AttachmentStoreFrontend takes ownership of backend. Backend is deleted on
25 // backend thread.
26 // AttachmentStoreFrontend is not thread safe, it should only be accessed from
27 // model thread.
28 // Method signatures of AttachmentStoreFrontend match exactly methods of
29 // AttachmentStoreBackend.
30 class SYNC_EXPORT AttachmentStoreFrontend
31 : public base::RefCounted<AttachmentStoreFrontend>,
32 public base::NonThreadSafe {
33 public:
34 AttachmentStoreFrontend(
35 scoped_ptr<AttachmentStoreBackend> backend,
36 const scoped_refptr<base::SequencedTaskRunner>& backend_task_runner);
38 void Init(const AttachmentStore::InitCallback& callback);
40 void Read(AttachmentStore::Component component,
41 const AttachmentIdList& ids,
42 const AttachmentStore::ReadCallback& callback);
44 void Write(AttachmentStore::Component component,
45 const AttachmentList& attachments,
46 const AttachmentStore::WriteCallback& callback);
47 void SetReference(AttachmentStore::Component component,
48 const AttachmentIdList& ids);
49 void DropReference(AttachmentStore::Component component,
50 const AttachmentIdList& ids,
51 const AttachmentStore::DropCallback& callback);
53 void ReadMetadataById(AttachmentStore::Component component,
54 const AttachmentIdList& ids,
55 const AttachmentStore::ReadMetadataCallback& callback);
57 void ReadMetadata(AttachmentStore::Component component,
58 const AttachmentStore::ReadMetadataCallback& callback);
60 private:
61 friend class base::RefCounted<AttachmentStoreFrontend>;
62 virtual ~AttachmentStoreFrontend();
64 scoped_ptr<AttachmentStoreBackend> backend_;
65 scoped_refptr<base::SequencedTaskRunner> backend_task_runner_;
67 DISALLOW_COPY_AND_ASSIGN(AttachmentStoreFrontend);
70 } // namespace syncer
72 #endif // SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_STORE_FRONTEND_H_