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      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 string16& metadata,
     36                            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_
     70