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