gecko/widget/windows/nsDragService.h

99 lines
3.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#ifndef nsDragService_h__
#define nsDragService_h__
#include "nsBaseDragService.h"
#include <windows.h>
#include <shlobj.h>
struct IDropSource;
struct IDataObject;
class nsNativeDragTarget;
class nsDataObjCollection;
class nsString;
/**
* Native Win32 DragService wrapper
*/
class nsDragService : public nsBaseDragService
{
public:
nsDragService();
virtual ~nsDragService();
// nsIDragService
NS_IMETHOD InvokeDragSession(nsIDOMNode *aDOMNode,
nsISupportsArray *anArrayTransferables,
nsIScriptableRegion *aRegion,
PRUint32 aActionType);
// nsIDragSession
NS_IMETHOD GetData(nsITransferable * aTransferable, PRUint32 anItem);
NS_IMETHOD GetNumDropItems(PRUint32 * aNumItems);
NS_IMETHOD IsDataFlavorSupported(const char *aDataFlavor, bool *_retval);
NS_IMETHOD EndDragSession(bool aDoneDrag);
// native impl.
NS_IMETHOD SetIDataObject(IDataObject * aDataObj);
NS_IMETHOD StartInvokingDragSession(IDataObject * aDataObj,
PRUint32 aActionType);
// A drop occurred within the application vs. outside of it.
void SetDroppedLocal();
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);
nsNativeDragTarget * mNativeDragTarget;
IDataObject * mDataObject;
bool mSentLocalDropEvent;
};
#endif // nsDragService_h__