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      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 SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_
      6 #define SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 #include "base/memory/weak_ptr.h"
     10 #include "base/threading/non_thread_safe.h"
     11 #include "sync/api/attachments/attachment_downloader.h"
     12 #include "sync/api/attachments/attachment_service.h"
     13 #include "sync/api/attachments/attachment_service_proxy.h"
     14 #include "sync/api/attachments/attachment_store.h"
     15 #include "sync/api/attachments/attachment_uploader.h"
     16 
     17 namespace syncer {
     18 
     19 // Implementation of AttachmentService.
     20 class SYNC_EXPORT AttachmentServiceImpl : public AttachmentService,
     21                                           public base::NonThreadSafe {
     22  public:
     23   // |delegate| is optional delegate for AttachmentService to notify about
     24   // asynchronous events (AttachmentUploaded). Pass NULL if delegate is not
     25   // provided. AttachmentService doesn't take ownership of delegate, the pointer
     26   // must be valid throughout AttachmentService lifetime.
     27   AttachmentServiceImpl(scoped_ptr<AttachmentStore> attachment_store,
     28                         scoped_ptr<AttachmentUploader> attachment_uploader,
     29                         scoped_ptr<AttachmentDownloader> attachment_downloader,
     30                         Delegate* delegate);
     31   virtual ~AttachmentServiceImpl();
     32 
     33   // Create an AttachmentServiceImpl suitable for use in tests.
     34   static scoped_ptr<syncer::AttachmentService> CreateForTest();
     35 
     36   // AttachmentService implementation.
     37   virtual void GetOrDownloadAttachments(const AttachmentIdList& attachment_ids,
     38                                         const GetOrDownloadCallback& callback)
     39       OVERRIDE;
     40   virtual void DropAttachments(const AttachmentIdList& attachment_ids,
     41                                const DropCallback& callback) OVERRIDE;
     42   virtual void StoreAttachments(const AttachmentList& attachments,
     43                                 const StoreCallback& callback) OVERRIDE;
     44   virtual void OnSyncDataDelete(const SyncData& sync_data) OVERRIDE;
     45   virtual void OnSyncDataUpdate(const AttachmentIdList& old_attachment_ids,
     46                                 const SyncData& updated_sync_data) OVERRIDE;
     47 
     48  private:
     49   class GetOrDownloadState;
     50 
     51   void ReadDone(const scoped_refptr<GetOrDownloadState>& state,
     52                 const AttachmentStore::Result& result,
     53                 scoped_ptr<AttachmentMap> attachments,
     54                 scoped_ptr<AttachmentIdList> unavailable_attachment_ids);
     55   void DropDone(const DropCallback& callback,
     56                 const AttachmentStore::Result& result);
     57   void WriteDone(const StoreCallback& callback,
     58                  const AttachmentStore::Result& result);
     59   void UploadDone(const AttachmentUploader::UploadResult& result,
     60                   const AttachmentId& attachment_id);
     61   void DownloadDone(const scoped_refptr<GetOrDownloadState>& state,
     62                     const AttachmentId& attachment_id,
     63                     const AttachmentDownloader::DownloadResult& result,
     64                     scoped_ptr<Attachment> attachment);
     65 
     66   const scoped_ptr<AttachmentStore> attachment_store_;
     67   const scoped_ptr<AttachmentUploader> attachment_uploader_;
     68   const scoped_ptr<AttachmentDownloader> attachment_downloader_;
     69   Delegate* delegate_;
     70   // Must be last data member.
     71   base::WeakPtrFactory<AttachmentServiceImpl> weak_ptr_factory_;
     72 
     73   DISALLOW_COPY_AND_ASSIGN(AttachmentServiceImpl);
     74 };
     75 
     76 }  // namespace syncer
     77 
     78 #endif  // SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_IMPL_H_
     79