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nsDragService.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Denis Issoupov <denis@macadamian.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either the GNU General Public License Version 2 or later (the "GPL"), or
00027  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
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00032  * decision by deleting the provisions above and replace them with the notice
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00034  * the provisions above, a recipient may use your version of this file under
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 #ifndef nsDragService_h__
00039 #define nsDragService_h__
00040 
00041 #include "nsBaseDragService.h"
00042 #include "nsClipboard.h"
00043 #include "nsIDragSessionQt.h"
00044 
00045 #include <qwidget.h> 
00046 #include <qdragobject.h> 
00047 
00048 //----------------------------------------------------------
00049 /* Native Qt DragService wrapper */
00050 class nsDragService : public nsBaseDragService, public nsIDragSessionQt
00051 {
00052 public:
00053   nsDragService();
00054   virtual ~nsDragService();
00055 
00056   //nsISupports
00057   NS_DECL_ISUPPORTS_INHERITED
00058   
00059     //nsIDragService
00060   NS_IMETHOD InvokeDragSession(nsIDOMNode *aDOMNode,
00061                                nsISupportsArray *anArrayTransferables,
00062                                nsIScriptableRegion *aRegion,
00063                                PRUint32 aActionType);
00064   NS_IMETHOD StartDragSession();
00065   NS_IMETHOD EndDragSession();
00066 
00067   // nsIDragSession
00068   NS_IMETHOD SetCanDrop(PRBool aCanDrop);
00069   NS_IMETHOD GetCanDrop(PRBool *aCanDrop);
00070   NS_IMETHOD GetNumDropItems(PRUint32 *aNumItems);
00071   NS_IMETHOD GetData(nsITransferable *aTransferable,PRUint32 aItemIndex);
00072   NS_IMETHOD IsDataFlavorSupported(const char *aDataFlavor,PRBool *_retval);
00073 
00074   // nsIDragSessionQt
00075   NS_IMETHOD SetDragReference(QMimeSource* aDragRef); 
00076 
00077 protected:
00078   QDragObject *RegisterDragFlavors(nsITransferable* transferable);
00079 
00080 private:
00081   // the source of our drags
00082   QWidget     *mHiddenWidget;
00083   QDragObject *mDragObject;
00084 
00085   // our source data items
00086   nsCOMPtr<nsISupportsArray> mSourceDataItems;
00087 };
00088 
00089 #endif // nsDragService_h__