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1 // Copyright (c) 2011 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 #include "content/common/file_system/webfilewriter_impl.h" | |
6 | |
7 #include "content/common/child_thread.h" | |
8 #include "content/common/file_system/file_system_dispatcher.h" | |
9 | |
10 namespace { | |
11 | |
12 inline FileSystemDispatcher* GetFileSystemDispatcher() { | |
13 return ChildThread::current()->file_system_dispatcher(); | |
14 } | |
15 } | |
16 | |
17 class WebFileWriterImpl::CallbackDispatcher | |
18 : public fileapi::FileSystemCallbackDispatcher { | |
19 public: | |
20 explicit CallbackDispatcher( | |
21 const base::WeakPtr<WebFileWriterImpl>& writer) : writer_(writer) { | |
22 } | |
23 virtual ~CallbackDispatcher() { | |
24 } | |
25 | |
26 virtual void DidReadMetadata(const base::PlatformFileInfo&, const FilePath&) { | |
27 NOTREACHED(); | |
28 } | |
29 virtual void DidReadDirectory( | |
30 const std::vector<base::FileUtilProxy::Entry>& entries, | |
31 bool has_more) { | |
32 NOTREACHED(); | |
33 } | |
34 virtual void DidOpenFileSystem(const std::string& name, | |
35 const GURL& root) { | |
36 NOTREACHED(); | |
37 } | |
38 virtual void DidSucceed() { | |
39 if (writer_) | |
40 writer_->DidSucceed(); | |
41 } | |
42 virtual void DidFail(base::PlatformFileError error_code) { | |
43 if (writer_) | |
44 writer_->DidFail(error_code); | |
45 } | |
46 virtual void DidWrite(int64 bytes, bool complete) { | |
47 if (writer_) | |
48 writer_->DidWrite(bytes, complete); | |
49 } | |
50 | |
51 private: | |
52 base::WeakPtr<WebFileWriterImpl> writer_; | |
53 }; | |
54 | |
55 WebFileWriterImpl::WebFileWriterImpl( | |
56 const GURL& path, WebKit::WebFileWriterClient* client) | |
57 : WebFileWriterBase(path, client), | |
58 request_id_(0) { | |
59 } | |
60 | |
61 WebFileWriterImpl::~WebFileWriterImpl() { | |
62 } | |
63 | |
64 void WebFileWriterImpl::DoTruncate(const GURL& path, int64 offset) { | |
65 // The FileSystemDispatcher takes ownership of the CallbackDispatcher. | |
66 GetFileSystemDispatcher()->Truncate(path, offset, &request_id_, | |
67 new CallbackDispatcher(AsWeakPtr())); | |
68 } | |
69 | |
70 void WebFileWriterImpl::DoWrite( | |
71 const GURL& path, const GURL& blob_url, int64 offset) { | |
72 GetFileSystemDispatcher()->Write( | |
73 path, blob_url, offset, &request_id_, | |
74 new CallbackDispatcher(AsWeakPtr())); | |
75 } | |
76 | |
77 void WebFileWriterImpl::DoCancel() { | |
78 GetFileSystemDispatcher()->Cancel(request_id_, | |
79 new CallbackDispatcher(AsWeakPtr())); | |
80 } | |
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