blob: f47b38342cbf8cca06fec5e76c8be00b03ef773a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_FILEAPI_WEBFILEWRITER_BASE_H_
#define WEBKIT_FILEAPI_WEBFILEWRITER_BASE_H_
#include "base/file_path.h"
#include "base/platform_file.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFileWriter.h"
class GURL;
namespace WebKit {
class WebFileWriterClient;
class WebString;
class WebURL;
}
namespace fileapi {
class WebFileWriterBase : public WebKit::WebFileWriter {
public:
WebFileWriterBase(
const WebKit::WebString& path, WebKit::WebFileWriterClient* client);
virtual ~WebFileWriterBase();
// WebFileWriter implementation
virtual void truncate(long long length);
virtual void write(long long position, const WebKit::WebURL& blobURL);
virtual void cancel();
protected:
// Derived classes must provide these methods to asynchronously perform
// the requested operation, and they must call the appropiate DidSomething
// method upon completion and as progress is made in the Write case.
virtual void DoTruncate(const FilePath& path, int64 offset) = 0;
virtual void DoWrite(const FilePath& path, const GURL& blob_url,
int64 offset) = 0;
virtual void DoCancel() = 0;
void DidSucceed();
void DidFail(base::PlatformFileError error_code);
void DidWrite(int64 bytes, bool complete);
private:
enum OperationType {
kOperationNone,
kOperationWrite,
kOperationTruncate
};
enum CancelState {
kCancelNotInProgress,
kCancelSent,
kCancelReceivedWriteResponse,
};
void FinishCancel();
FilePath path_;
WebKit::WebFileWriterClient* client_;
OperationType operation_;
CancelState cancel_state_;
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_WEBFILEWRITER_BASE_H_
|