content/browser/download/drag_download_util.h

   1 // Copyright (c) 2012 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 CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_
   6 #define CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/strings/string16.h"
  11 #include "content/browser/download/drag_download_file.h"
  12 #include "ui/base/dragdrop/download_file_interface.h"
  13
  14 class GURL;
  15
  16 namespace base {
  17 class FilePath;
  18 }
  19
  20 namespace net {
  21 class FileStream;
  22 }
  23
  24 namespace content {
  25
  26 // Parse the download metadata set in DataTransfer.setData. The metadata
  27 // consists of a set of the following values separated by ":"
  28 // * MIME type
  29 // * File name
  30 // * URL
  31 // If the file name contains special characters, they need to be escaped
  32 // appropriately.
  33 // For example, we can have
  34 //   text/plain:example.txt:http://example.com/example.txt
  35 bool ParseDownloadMetadata(const base::string16& metadata,
  36                            base::string16* mime_type,
  37                            base::FilePath* file_name,
  38                            GURL* url);
  39
  40 // Create a new file at the specified path. If the file already exists, try to
  41 // insert the sequential unifier to produce a new file, like foo-01.txt.
  42 // Return a FileStream if successful.
  43 // |net_log| is a NetLog for the stream.
  44 CONTENT_EXPORT net::FileStream* CreateFileStreamForDrop(
  45     base::FilePath* file_path, net::NetLog* net_log);
  46
  47 // Implementation of DownloadFileObserver to finalize the download process.
  48 class PromiseFileFinalizer : public ui::DownloadFileObserver {
  49  public:
  50   explicit PromiseFileFinalizer(DragDownloadFile* drag_file_downloader);
  51
  52   // DownloadFileObserver methods.
  53   virtual void OnDownloadCompleted(const base::FilePath& file_path) OVERRIDE;
  54   virtual void OnDownloadAborted() OVERRIDE;
  55
  56  protected:
  57   virtual ~PromiseFileFinalizer();
  58
  59  private:
  60   void Cleanup();
  61
  62   scoped_refptr<DragDownloadFile> drag_file_downloader_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(PromiseFileFinalizer);
  65 };
  66
  67 }  // namespace content
  68
  69 #endif  // CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_UTIL_H_