gecko-dev/widget/windows/nsDragService.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsDragService_h__
#define nsDragService_h__
#include "nsBaseDragService.h"
#include <windows.h>
#include <shlobj.h>
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struct IDropSource;
struct IDataObject;
class nsNativeDragTarget;
class nsDataObjCollection;
class nsString;
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/**
* Native Win32 DragService wrapper
*/
class nsDragService : public nsBaseDragService
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{
public:
nsDragService();
virtual ~nsDragService();
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// nsIDragService
NS_IMETHOD InvokeDragSession(nsIDOMNode *aDOMNode,
nsISupportsArray *anArrayTransferables,
nsIScriptableRegion *aRegion,
uint32_t aActionType);
// nsIDragSession
NS_IMETHOD GetData(nsITransferable * aTransferable, uint32_t anItem);
NS_IMETHOD GetNumDropItems(uint32_t * aNumItems);
NS_IMETHOD IsDataFlavorSupported(const char *aDataFlavor, bool *_retval);
NS_IMETHOD EndDragSession(bool aDoneDrag);
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// native impl.
NS_IMETHOD SetIDataObject(IDataObject * aDataObj);
NS_IMETHOD StartInvokingDragSession(IDataObject * aDataObj,
uint32_t aActionType);
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// A drop occurred within the application vs. outside of it.
void SetDroppedLocal();
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protected:
nsDataObjCollection* GetDataObjCollection(IDataObject * aDataObj);
// determine if we have a single data object or one of our private
// collections
bool IsCollectionObject(IDataObject* inDataObj);
// Create a bitmap for drag operations
bool CreateDragImage(nsIDOMNode *aDOMNode,
nsIScriptableRegion *aRegion,
SHDRAGIMAGE *psdi);
IDataObject * mDataObject;
bool mSentLocalDropEvent;
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};
#endif // nsDragService_h__