1// Copyright 2013 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 CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SUPPORTED_IMAGE_TYPE_VALIDATOR_H_
6#define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SUPPORTED_IMAGE_TYPE_VALIDATOR_H_
7
8#include "base/basictypes.h"
9#include "base/files/file_path.h"
10#include "base/memory/scoped_ptr.h"
11#include "base/memory/weak_ptr.h"
12#include "chrome/browser/media_galleries/fileapi/av_scanning_file_validator.h"
13
14class ImageDecoder;
15
16class MediaFileValidatorFactory;
17
18// Use ImageDecoder to determine if the file decodes without error. Handles
19// image files supported by Chrome.
20class SupportedImageTypeValidator : public AVScanningFileValidator {
21 public:
22  virtual ~SupportedImageTypeValidator();
23
24  static bool SupportsFileType(const base::FilePath& path);
25
26  virtual void StartPreWriteValidation(
27      const ResultCallback& result_callback) OVERRIDE;
28
29 private:
30  friend class MediaFileValidatorFactory;
31
32  explicit SupportedImageTypeValidator(const base::FilePath& file);
33
34  void OnFileOpen(scoped_ptr<std::string> data);
35
36  base::FilePath path_;
37  scoped_refptr<ImageDecoder> decoder_;
38  storage::CopyOrMoveFileValidator::ResultCallback callback_;
39  base::WeakPtrFactory<SupportedImageTypeValidator> weak_factory_;
40
41  DISALLOW_COPY_AND_ASSIGN(SupportedImageTypeValidator);
42};
43
44#endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_SUPPORTED_IMAGE_TYPE_VALIDATOR_H_
45