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comparison: widget/windows/nsNativeDragTarget.h
widget/windows/nsNativeDragTarget.h
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- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:6ec9c9878d81 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 #ifndef _nsNativeDragTarget_h_ | |
| 6 #define _nsNativeDragTarget_h_ | |
| 7 | |
| 8 #include "nsCOMPtr.h" | |
| 9 #include "nsIDragSession.h" | |
| 10 #include <ole2.h> | |
| 11 #include <shlobj.h> | |
| 12 | |
| 13 #ifndef IDropTargetHelper | |
| 14 #include <shobjidl.h> // Vista drag image interfaces | |
| 15 #undef LogSeverity // SetupAPI.h #defines this as DWORD | |
| 16 #endif | |
| 17 | |
| 18 #include "mozilla/Attributes.h" | |
| 19 | |
| 20 class nsIDragService; | |
| 21 class nsIWidget; | |
| 22 | |
| 23 struct IDataObject; | |
| 24 | |
| 25 /* | |
| 26 * nsNativeDragTarget implements the IDropTarget interface and gets most of its | |
| 27 * behavior from the associated adapter (m_dragDrop). | |
| 28 */ | |
| 29 | |
| 30 class nsNativeDragTarget MOZ_FINAL : public IDropTarget | |
| 31 { | |
| 32 public: | |
| 33 nsNativeDragTarget(nsIWidget * aWidget); | |
| 34 ~nsNativeDragTarget(); | |
| 35 | |
| 36 // IUnknown members - see iunknown.h for documentation | |
| 37 STDMETHODIMP QueryInterface(REFIID, void**); | |
| 38 STDMETHODIMP_(ULONG) AddRef(); | |
| 39 STDMETHODIMP_(ULONG) Release(); | |
| 40 | |
| 41 // IDataTarget members | |
| 42 | |
| 43 // Set pEffect based on whether this object can support a drop based on | |
| 44 // the data available from pSource, the key and mouse states specified | |
| 45 // in grfKeyState, and the coordinates specified by point. This is | |
| 46 // called by OLE when a drag enters this object's window (as registered | |
| 47 // by Initialize). | |
| 48 STDMETHODIMP DragEnter(LPDATAOBJECT pSource, DWORD grfKeyState, | |
| 49 POINTL point, DWORD* pEffect); | |
| 50 | |
| 51 // Similar to DragEnter except it is called frequently while the drag | |
| 52 // is over this object's window. | |
| 53 STDMETHODIMP DragOver(DWORD grfKeyState, POINTL point, DWORD* pEffect); | |
| 54 | |
| 55 // Release the drag-drop source and put internal state back to the point | |
| 56 // before the call to DragEnter. This is called when the drag leaves | |
| 57 // without a drop occurring. | |
| 58 STDMETHODIMP DragLeave(); | |
| 59 | |
| 60 // If point is within our region of interest and pSource's data supports | |
| 61 // one of our formats, get the data and set pEffect according to | |
| 62 // grfKeyState (DROPEFFECT_MOVE if the control key was not pressed, | |
| 63 // DROPEFFECT_COPY if the control key was pressed). Otherwise return | |
| 64 // E_FAIL. | |
| 65 STDMETHODIMP Drop(LPDATAOBJECT pSource, DWORD grfKeyState, | |
| 66 POINTL point, DWORD* pEffect); | |
| 67 /** | |
| 68 * Cancel the current drag session, if any. | |
| 69 */ | |
| 70 void DragCancel(); | |
| 71 | |
| 72 protected: | |
| 73 | |
| 74 void GetGeckoDragAction(DWORD grfKeyState, LPDWORD pdwEffect, | |
| 75 uint32_t * aGeckoAction); | |
| 76 void ProcessDrag(uint32_t aEventType, DWORD grfKeyState, | |
| 77 POINTL pt, DWORD* pdwEffect); | |
| 78 void DispatchDragDropEvent(uint32_t aType, POINTL pt); | |
| 79 void AddLinkSupportIfCanBeGenerated(LPDATAOBJECT aIDataSource); | |
| 80 | |
| 81 // Native Stuff | |
| 82 ULONG m_cRef; // reference count | |
| 83 HWND mHWnd; | |
| 84 DWORD mEffectsAllowed; | |
| 85 DWORD mEffectsPreferred; | |
| 86 bool mTookOwnRef; | |
| 87 | |
| 88 // Gecko Stuff | |
| 89 nsIWidget * mWidget; | |
| 90 nsIDragService * mDragService; | |
| 91 // Drag target helper | |
| 92 IDropTargetHelper * GetDropTargetHelper(); | |
| 93 | |
| 94 | |
| 95 private: | |
| 96 // Drag target helper | |
| 97 IDropTargetHelper * mDropTargetHelper; | |
| 98 }; | |
| 99 | |
| 100 #endif // _nsNativeDragTarget_h_ | |
| 101 | |
| 102 |
