mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2024-12-13 18:16:20 +01:00
255fdad295
git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@902 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
102 lines
3.8 KiB
C++
102 lines
3.8 KiB
C++
// Copyright (c) 2011 The Chromium Embedded Framework Authors.
|
|
// Portions copyright (c) 2009 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 CEF_LIBCEF_BROWSER_DRAG_DELEGATE_WIN_H_
|
|
#define CEF_LIBCEF_BROWSER_DRAG_DELEGATE_WIN_H_
|
|
#pragma once
|
|
|
|
#include <string>
|
|
|
|
#include "base/memory/ref_counted.h"
|
|
#include "base/memory/scoped_ptr.h"
|
|
#include "base/threading/platform_thread.h"
|
|
#include "third_party/skia/include/core/SkBitmap.h"
|
|
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
|
|
#include "ui/base/dragdrop/os_exchange_data_provider_win.h"
|
|
#include "ui/gfx/point.h"
|
|
|
|
class BrowserWebViewDelegate;
|
|
class DragDropThread;
|
|
class WebDragSource;
|
|
struct WebDropData;
|
|
|
|
// Windows-specific drag-and-drop handling.
|
|
// If we are dragging a virtual file out of the browser, we use a background
|
|
// thread to do the drag-and-drop because we do not want to run nested
|
|
// message loop in the UI thread. For all other cases, the drag-and-drop happens
|
|
// in the UI thread.
|
|
class BrowserDragDelegate
|
|
: public ui::DataObjectImpl::Observer,
|
|
public base::RefCountedThreadSafe<BrowserDragDelegate> {
|
|
public:
|
|
explicit BrowserDragDelegate(BrowserWebViewDelegate* view);
|
|
virtual ~BrowserDragDelegate();
|
|
|
|
// Called on UI thread.
|
|
void StartDragging(const WebDropData& drop_data,
|
|
WebKit::WebDragOperationsMask ops,
|
|
const SkBitmap& image,
|
|
const gfx::Vector2d& image_offset);
|
|
void CancelDrag();
|
|
|
|
// DataObjectImpl::Observer implementation.
|
|
// Called on drag-and-drop thread.
|
|
virtual void OnWaitForData();
|
|
virtual void OnDataObjectDisposed();
|
|
|
|
private:
|
|
// Called on either UI thread or drag-and-drop thread.
|
|
void PrepareDragForDownload(const WebDropData& drop_data,
|
|
ui::OSExchangeData* data,
|
|
const GURL& page_url,
|
|
const std::string& page_encoding);
|
|
void PrepareDragForFileContents(const WebDropData& drop_data,
|
|
ui::OSExchangeData* data);
|
|
void PrepareDragForUrl(const WebDropData& drop_data,
|
|
ui::OSExchangeData* data);
|
|
void DoDragging(const WebDropData& drop_data,
|
|
WebKit::WebDragOperationsMask ops,
|
|
const GURL& page_url,
|
|
const std::string& page_encoding,
|
|
const SkBitmap& image,
|
|
const gfx::Vector2d& image_offset);
|
|
|
|
// Called on drag-and-drop thread.
|
|
void StartBackgroundDragging(const WebDropData& drop_data,
|
|
WebKit::WebDragOperationsMask ops,
|
|
const GURL& page_url,
|
|
const std::string& page_encoding,
|
|
const SkBitmap& image,
|
|
const gfx::Vector2d& image_offset);
|
|
// Called on UI thread.
|
|
void EndDragging();
|
|
void CloseThread();
|
|
|
|
// For debug check only. Access only on drag-and-drop thread.
|
|
base::PlatformThreadId drag_drop_thread_id_;
|
|
|
|
// All the member variables below are accessed on UI thread.
|
|
|
|
// Keep track of the BrowserWebViewDelegate it is associated with.
|
|
BrowserWebViewDelegate* view_;
|
|
|
|
// |drag_source_| is our callback interface passed to the system when we
|
|
// want to initiate a drag and drop operation. We use it to tell if a
|
|
// drag operation is happening.
|
|
scoped_refptr<WebDragSource> drag_source_;
|
|
|
|
// The thread used by the drag-out download. This is because we want to avoid
|
|
// running nested message loop in main UI thread.
|
|
scoped_ptr<DragDropThread> drag_drop_thread_;
|
|
|
|
// The flag to guard that EndDragging is not called twice.
|
|
bool drag_ended_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(BrowserDragDelegate);
|
|
};
|
|
|
|
|
|
#endif // CEF_LIBCEF_BROWSER_DRAG_DELEGATE_WIN_H_
|