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1 // Copyright (c) 2012 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 WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_ | |
6 #define WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_ | |
7 | |
8 #include "base/files/file_path.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/platform_file.h" | |
11 #include "googleurl/src/gurl.h" | |
12 #include "webkit/fileapi/file_stream_writer.h" | |
13 #include "webkit/fileapi/file_system_types.h" | |
14 #include "webkit/fileapi/file_system_url.h" | |
15 #include "webkit/fileapi/task_runner_bound_observer_list.h" | |
16 #include "webkit/quota/quota_types.h" | |
17 #include "webkit/storage/webkit_storage_export.h" | |
18 | |
19 namespace fileapi { | |
20 | |
21 class FileSystemContext; | |
22 class FileSystemQuotaUtil; | |
23 class LocalFileStreamWriter; | |
24 | |
25 class WEBKIT_STORAGE_EXPORT_PRIVATE SandboxFileStreamWriter | |
26 : public FileStreamWriter { | |
27 public: | |
28 SandboxFileStreamWriter(FileSystemContext* file_system_context, | |
29 const FileSystemURL& url, | |
30 int64 initial_offset, | |
31 const UpdateObserverList& observers); | |
32 virtual ~SandboxFileStreamWriter(); | |
33 | |
34 // FileStreamWriter overrides. | |
35 virtual int Write(net::IOBuffer* buf, int buf_len, | |
36 const net::CompletionCallback& callback) OVERRIDE; | |
37 virtual int Cancel(const net::CompletionCallback& callback) OVERRIDE; | |
38 virtual int Flush(const net::CompletionCallback& callback) OVERRIDE; | |
39 | |
40 // Used only by tests. | |
41 void set_default_quota(int64 quota) { | |
42 default_quota_ = quota; | |
43 } | |
44 | |
45 private: | |
46 // Performs quota calculation and calls local_file_writer_->Write(). | |
47 int WriteInternal(net::IOBuffer* buf, int buf_len, | |
48 const net::CompletionCallback& callback); | |
49 | |
50 // Callbacks that are chained for the first write. This eventually calls | |
51 // WriteInternal. | |
52 void DidGetFileInfo(const net::CompletionCallback& callback, | |
53 base::PlatformFileError file_error, | |
54 const base::PlatformFileInfo& file_info, | |
55 const base::FilePath& platform_path); | |
56 void DidGetUsageAndQuota(const net::CompletionCallback& callback, | |
57 quota::QuotaStatusCode status, | |
58 int64 usage, int64 quota); | |
59 void DidInitializeForWrite(net::IOBuffer* buf, int buf_len, | |
60 const net::CompletionCallback& callback, | |
61 int init_status); | |
62 | |
63 void DidWrite(const net::CompletionCallback& callback, int write_response); | |
64 | |
65 // Stops the in-flight operation, calls |cancel_callback_| and returns true | |
66 // if there's a pending cancel request. | |
67 bool CancelIfRequested(); | |
68 | |
69 scoped_refptr<FileSystemContext> file_system_context_; | |
70 FileSystemURL url_; | |
71 int64 initial_offset_; | |
72 scoped_ptr<LocalFileStreamWriter> local_file_writer_; | |
73 net::CompletionCallback cancel_callback_; | |
74 | |
75 UpdateObserverList observers_; | |
76 | |
77 base::FilePath file_path_; | |
78 int64 file_size_; | |
79 int64 total_bytes_written_; | |
80 int64 allowed_bytes_to_write_; | |
81 bool has_pending_operation_; | |
82 | |
83 int64 default_quota_; | |
84 | |
85 base::WeakPtrFactory<SandboxFileStreamWriter> weak_factory_; | |
86 | |
87 DISALLOW_COPY_AND_ASSIGN(SandboxFileStreamWriter); | |
88 }; | |
89 | |
90 } // namespace fileapi | |
91 | |
92 #endif // WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_ | |
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