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
70
71
72
73
|
// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PDF_SAVE_DATA_BUFFER_HANDLER_FOR_DRIVE_H_
#define PDF_SAVE_DATA_BUFFER_HANDLER_FOR_DRIVE_H_
#include <stdint.h>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "pdf/mojom/pdf.mojom.h"
namespace chrome_pdf {
class PdfViewWebPlugin;
// Buffer for saving data to Google Drive.
class SaveDataBufferHandlerForDrive : public pdf::mojom::SaveDataBufferHandler {
public:
explicit SaveDataBufferHandlerForDrive(PdfViewWebPlugin* pdf_view_web_plugin);
SaveDataBufferHandlerForDrive(const SaveDataBufferHandlerForDrive&) = delete;
SaveDataBufferHandlerForDrive& operator=(
const SaveDataBufferHandlerForDrive&) = delete;
~SaveDataBufferHandlerForDrive() override;
// Gets the total size of the data to be saved.
virtual uint32_t GetFileSize() = 0;
protected:
PdfViewWebPlugin* pdf_view_web_plugin() { return pdf_view_web_plugin_; }
private:
raw_ptr<PdfViewWebPlugin> pdf_view_web_plugin_;
};
// Handler for reading the original data of a PDF file.
class OriginalDataHandlerForDrive final : public SaveDataBufferHandlerForDrive {
public:
explicit OriginalDataHandlerForDrive(PdfViewWebPlugin* pdf_view_web_plugin);
~OriginalDataHandlerForDrive() override;
// SaveDataBufferHandlerForDrive:
uint32_t GetFileSize() override;
// pdf::mojom::SaveDataBufferHandler:
void Read(uint32_t offset,
uint32_t block_size,
ReadCallback callback) override;
};
// Handler for reading the modified data of a PDF file.
class ModifiedDataBufferHandlerForDrive final
: public SaveDataBufferHandlerForDrive {
public:
explicit ModifiedDataBufferHandlerForDrive(
PdfViewWebPlugin* pdf_view_web_plugin);
~ModifiedDataBufferHandlerForDrive() override;
// SaveDataBufferHandlerForDrive:
uint32_t GetFileSize() override;
// pdf::mojom::SaveDataBufferHandler:
void Read(uint32_t offset,
uint32_t block_size,
ReadCallback callback) override;
private:
std::vector<uint8_t> buffer_;
};
} // namespace chrome_pdf
#endif // PDF_SAVE_DATA_BUFFER_HANDLER_FOR_DRIVE_H_
|
