src/chrome/browser/media_galleries/fileapi/supported_image_type_validator.h

   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
  14 class ImageDecoder;
  15
  16 class MediaFileValidatorFactory;
  17
  18 // Use ImageDecoder to determine if the file decodes without error. Handles
  19 // image files supported by Chrome.
  20 class 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   fileapi::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_