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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_WEB_CONTENTS_WEB_CONTENTS_DRAG_WIN_H_ | |
| 6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_DRAG_WIN_H_ | |
| 7 | |
| 8 #include "base/callback.h" | |
| 9 #include "base/compiler_specific.h" | |
| 10 #include "base/memory/ref_counted.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/threading/platform_thread.h" | |
| 13 #include "content/common/content_export.h" | |
| 14 #include "third_party/WebKit/public/web/WebDragOperation.h" | |
| 15 #include "ui/base/dragdrop/os_exchange_data_provider_win.h" | |
| 16 #include "ui/gfx/native_widget_types.h" | |
| 17 #include "ui/gfx/point.h" | |
| 18 | |
| 19 class SkBitmap; | |
| 20 | |
| 21 namespace gfx { | |
| 22 class ImageSkia; | |
| 23 } | |
| 24 | |
| 25 namespace content { | |
| 26 class DragDropThread; | |
| 27 class WebContents; | |
| 28 class WebDragDest; | |
| 29 class WebDragSource; | |
| 30 struct DropData; | |
| 31 | |
| 32 // Windows-specific drag-and-drop handling in WebContentsView. | |
| 33 // If we are dragging a virtual file out of the browser, we use a background | |
| 34 // thread to do the drag-and-drop because we do not want to run nested | |
| 35 // message loop in the UI thread. For all other cases, the drag-and-drop happens | |
| 36 // in the UI thread. | |
| 37 class CONTENT_EXPORT WebContentsDragWin | |
| 38 : NON_EXPORTED_BASE(public ui::DataObjectImpl::Observer), | |
| 39 public base::RefCountedThreadSafe<WebContentsDragWin> { | |
| 40 public: | |
| 41 WebContentsDragWin(gfx::NativeWindow source_window, | |
| 42 WebContents* web_contents, | |
| 43 WebDragDest* drag_dest, | |
| 44 const base::Callback<void()>& drag_end_callback); | |
| 45 virtual ~WebContentsDragWin(); | |
| 46 | |
| 47 // Called on UI thread. | |
| 48 void StartDragging(const DropData& drop_data, | |
| 49 blink::WebDragOperationsMask ops, | |
| 50 const gfx::ImageSkia& image, | |
| 51 const gfx::Vector2d& image_offset); | |
| 52 void CancelDrag(); | |
| 53 | |
| 54 // DataObjectImpl::Observer implementation. | |
| 55 // Called on drag-and-drop thread. | |
| 56 virtual void OnWaitForData(); | |
| 57 virtual void OnDataObjectDisposed(); | |
| 58 | |
| 59 // Don't invoke OLE DoDragDrop during tests. | |
| 60 static void DisableDragDropForTesting(); | |
| 61 | |
| 62 private: | |
| 63 // Called on either UI thread or drag-and-drop thread. | |
| 64 void PrepareDragForDownload(const DropData& drop_data, | |
| 65 ui::OSExchangeData* data, | |
| 66 const GURL& page_url, | |
| 67 const std::string& page_encoding); | |
| 68 void PrepareDragForFileContents(const DropData& drop_data, | |
| 69 ui::OSExchangeData* data); | |
| 70 void PrepareDragForUrl(const DropData& drop_data, | |
| 71 ui::OSExchangeData* data); | |
| 72 // Returns false if the source window becomes invalid when the drag ends. | |
| 73 // This could happen when the window gets destroyed when the drag is still in | |
| 74 // progress. No further processing should be done beyond this return point | |
| 75 // because the instance has been destroyed. | |
| 76 bool DoDragging(const DropData& drop_data, | |
| 77 blink::WebDragOperationsMask ops, | |
| 78 const GURL& page_url, | |
| 79 const std::string& page_encoding, | |
| 80 const gfx::ImageSkia& image, | |
| 81 const gfx::Vector2d& image_offset); | |
| 82 | |
| 83 // Called on drag-and-drop thread. | |
| 84 void StartBackgroundDragging(const DropData& drop_data, | |
| 85 blink::WebDragOperationsMask ops, | |
| 86 const GURL& page_url, | |
| 87 const std::string& page_encoding, | |
| 88 const gfx::ImageSkia& image, | |
| 89 const gfx::Vector2d& image_offset); | |
| 90 // Called on UI thread. | |
| 91 void EndDragging(); | |
| 92 void CloseThread(); | |
| 93 | |
| 94 // For debug check only. Access only on drag-and-drop thread. | |
| 95 base::PlatformThreadId drag_drop_thread_id_; | |
| 96 | |
| 97 // All the member variables below are accessed on UI thread. | |
| 98 | |
| 99 gfx::NativeWindow source_window_; | |
| 100 WebContents* web_contents_; | |
| 101 WebDragDest* drag_dest_; | |
| 102 | |
| 103 // |drag_source_| is our callback interface passed to the system when we | |
| 104 // want to initiate a drag and drop operation. We use it to tell if a | |
| 105 // drag operation is happening. | |
| 106 scoped_refptr<WebDragSource> drag_source_; | |
| 107 | |
| 108 // The thread used by the drag-out download. This is because we want to avoid | |
| 109 // running nested message loop in main UI thread. | |
| 110 scoped_ptr<DragDropThread> drag_drop_thread_; | |
| 111 | |
| 112 // The flag to guard that EndDragging is not called twice. | |
| 113 bool drag_ended_; | |
| 114 | |
| 115 base::Callback<void()> drag_end_callback_; | |
| 116 | |
| 117 DISALLOW_COPY_AND_ASSIGN(WebContentsDragWin); | |
| 118 }; | |
| 119 | |
| 120 } // namespace content | |
| 121 | |
| 122 #endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_DRAG_WIN_H_ | |
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Chromium Code Reviews
Issue 137403005:
Remove some code inside USE_AURA and OS_WIN ifdefs. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/