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
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_IMAGE_SOURCE_IMAGE_SOURCE_H_
#define CHROME_BROWSER_ASH_IMAGE_SOURCE_IMAGE_SOURCE_H_
#include <string>
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/url_data_source.h"
namespace base {
class SequencedTaskRunner;
}
namespace ash {
// Data source that reads and decodes an image from the RO file system.
class ImageSource : public content::URLDataSource {
public:
ImageSource();
ImageSource(const ImageSource&) = delete;
ImageSource& operator=(const ImageSource&) = delete;
~ImageSource() override;
// content::URLDataSource implementation.
std::string GetSource() override;
void StartDataRequest(
const GURL& url,
const content::WebContents::Getter& wc_getter,
content::URLDataSource::GotDataCallback got_data_callback) override;
std::string GetMimeType(const GURL& url) override;
private:
// Continuation from StartDataRequest().
void StartDataRequestAfterPathExists(
const base::FilePath& image_path,
content::URLDataSource::GotDataCallback got_data_callback,
bool path_exists);
// Checks whether we have allowed the image to be loaded.
bool IsAllowlisted(const std::string& path) const;
// The background task runner on which file I/O and image decoding are done.
scoped_refptr<base::SequencedTaskRunner> task_runner_;
base::WeakPtrFactory<ImageSource> weak_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_IMAGE_SOURCE_IMAGE_SOURCE_H_
|
