| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_FILE_H_ |
| #define CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_FILE_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/run_loop.h" |
| #include "content/browser/download/download_file.h" |
| #include "content/common/content_export.h" |
| #include "content/public/browser/download_item.h" |
| #include "content/public/browser/download_manager.h" |
| #include "content/public/common/referrer.h" |
| #include "net/base/file_stream.h" |
| #include "ui/base/dragdrop/download_file_interface.h" |
| #include "url/gurl.h" |
| |
| namespace net { |
| class FileStream; |
| } |
| |
| namespace content { |
| |
| class DownloadManager; |
| class WebContents; |
| |
| // This class implements downloading a file via dragging virtual files out of |
| // the browser: |
| // http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2009-August/022118.html |
| // http://www.html5rocks.com/en/tutorials/casestudies/box_dnd_download/ |
| class CONTENT_EXPORT DragDownloadFile : public ui::DownloadFileProvider { |
| public: |
| // On Windows, we need to download into a temporary file. On posix, we need to |
| // download into a file stream that has already been created, so only the UI |
| // thread is involved. |file_stream| must be null on windows but non-null on |
| // posix systems. |file_path| is an absolute path on all systems. |
| DragDownloadFile(const base::FilePath& file_path, |
| scoped_ptr<net::FileStream> file_stream, |
| const GURL& url, |
| const Referrer& referrer, |
| const std::string& referrer_encoding, |
| WebContents* web_contents); |
| |
| // DownloadFileProvider methods. |
| virtual void Start(ui::DownloadFileObserver* observer) OVERRIDE; |
| virtual bool Wait() OVERRIDE; |
| virtual void Stop() OVERRIDE; |
| |
| private: |
| class DragDownloadFileUI; |
| enum State {INITIALIZED, STARTED, SUCCESS, FAILURE}; |
| |
| virtual ~DragDownloadFile(); |
| |
| void DownloadCompleted(bool is_successful); |
| void CheckThread(); |
| |
| base::FilePath file_path_; |
| scoped_ptr<net::FileStream> file_stream_; |
| base::MessageLoop* drag_message_loop_; |
| State state_; |
| scoped_refptr<ui::DownloadFileObserver> observer_; |
| base::RunLoop nested_loop_; |
| DragDownloadFileUI* drag_ui_; |
| base::WeakPtrFactory<DragDownloadFile> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DragDownloadFile); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_DOWNLOAD_DRAG_DOWNLOAD_FILE_H_ |