97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
// Copyright (c) 2011 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2009-2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef _DRAG_DOWNLOAD_FILE_H
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#define _DRAG_DOWNLOAD_FILE_H
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#pragma once
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#include "base/file_path.h"
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#include "base/memory/linked_ptr.h"
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#include "base/message_loop.h"
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#include "googleurl/src/gurl.h"
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#include "ui/base/dragdrop/download_file_interface.h"
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class BrowserWebViewDelegate;
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namespace net {
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class FileStream;
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}
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class DragDownloadFile : public ui::DownloadFileProvider {
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public:
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// On Windows, we need to download into a temporary file. Two threads are
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// involved: background drag-and-drop thread and UI thread.
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// The first parameter file_name_or_path should contain file name while the
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// second parameter file_stream should be NULL.
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//
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// On MacOSX, we need to download into a file stream that has already been
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// created. Only UI thread is involved.
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// The file path and file stream should be provided as the first two
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// parameters.
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DragDownloadFile(const FilePath& file_name_or_path,
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linked_ptr<net::FileStream> file_stream,
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const GURL& url,
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const GURL& referrer,
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const std::string& referrer_encoding,
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BrowserWebViewDelegate* view);
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// DownloadFileProvider methods.
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// Called on drag-and-drop thread (Windows).
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// Called on UI thread (MacOSX).
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virtual bool Start(ui::DownloadFileObserver* observer);
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virtual void Stop();
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#if defined(OS_WIN)
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virtual IStream* GetStream() { return NULL; }
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#endif
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private:
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// Called on drag-and-drop thread (Windows).
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// Called on UI thread (Windows).
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virtual ~DragDownloadFile();
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// Called on drag-and-drop thread (Windows only).
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#if defined(OS_WIN)
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void StartNestedMessageLoop();
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void QuitNestedMessageLoop();
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#endif
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// Called on either drag-and-drop thread or UI thread (Windows).
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// Called on UI thread (MacOSX).
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void InitiateDownload();
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void DownloadCompleted(bool is_successful);
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// Helper methods to make sure we're in the correct thread.
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void AssertCurrentlyOnDragThread();
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void AssertCurrentlyOnUIThread();
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// Initialized on drag-and-drop thread. Accessed on either thread after that
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// (Windows).
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// Accessed on UI thread (MacOSX).
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FilePath file_path_;
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FilePath file_name_;
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linked_ptr<net::FileStream> file_stream_;
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GURL url_;
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GURL referrer_;
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std::string referrer_encoding_;
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BrowserWebViewDelegate* view_;
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MessageLoop* drag_message_loop_;
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FilePath temp_dir_path_;
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// Accessed on drag-and-drop thread (Windows).
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// Accessed on UI thread (MacOSX).
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bool is_started_;
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bool is_successful_;
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scoped_refptr<ui::DownloadFileObserver> observer_;
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// Accessed on drag-and-drop thread (Windows only).
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#if defined(OS_WIN)
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bool is_running_nested_message_loop_;
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#endif
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DISALLOW_COPY_AND_ASSIGN(DragDownloadFile);
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};
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#endif // _DRAG_DOWNLOAD_FILE_H
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