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lightning-sunbird  0.9+nobinonly
nsDragService.h
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is mozilla.org code.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * IBM Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 1998
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Rich Walsh <dragtext@e-vertise.com>
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsDragService_h__
00039 #define nsDragService_h__
00040 
00041 #include "nsBaseDragService.h"
00042 #include "nsIDragSessionOS2.h"
00043 
00044 #define INCL_PM
00045 #include <os2.h>
00046 
00047   // forward declarations
00048 class nsIURI;
00049 class nsIURL;
00050 class nsISupportsString;
00051 
00052 class nsDragService : public nsBaseDragService, public nsIDragSessionOS2
00053 {
00054 public:
00055   nsDragService();
00056   virtual ~nsDragService();
00057 
00058   NS_DECL_ISUPPORTS_INHERITED
00059 
00060     // nsIDragService
00061   NS_IMETHOD InvokeDragSession (nsIDOMNode* aDOMNode,
00062                                 nsISupportsArray* aTransferables,
00063                                 nsIScriptableRegion* aRegion,
00064                                 PRUint32 aActionType);
00065   NS_IMETHOD StartDragSession();
00066   NS_IMETHOD EndDragSession();
00067 
00068     // nsIDragSession
00069   NS_IMETHOD GetNumDropItems(PRUint32* aNumDropItems);
00070   NS_IMETHOD GetData(nsITransferable* aTransferable, PRUint32 aItemIndex);
00071   NS_IMETHOD IsDataFlavorSupported(const char* aDataFlavor, PRBool* _retval);
00072 
00073     // nsIDragSessionOS2
00074   NS_IMETHOD DragOverMsg(PDRAGINFO pdinfo, MRESULT& mr, PRUint32* dragFlags);
00075   NS_IMETHOD GetDragoverResult(MRESULT& mr);
00076   NS_IMETHOD DragLeaveMsg(PDRAGINFO pdinfo, PRUint32* dragFlags);
00077   NS_IMETHOD DropHelpMsg(PDRAGINFO pdinfo, PRUint32* dragFlags);
00078   NS_IMETHOD ExitSession(PRUint32* dragFlags);
00079   NS_IMETHOD DropMsg(PDRAGINFO pdinfo, HWND hwnd, PRUint32* dragFlags);
00080   NS_IMETHOD RenderCompleteMsg(PDRAGTRANSFER pdxfer, USHORT usResult,
00081                                PRUint32* dragFlags);
00082 
00083 protected:
00084     // nsIDragSessionOS2
00085   NS_IMETHOD NativeDragEnter(PDRAGINFO pdinfo);
00086   NS_IMETHOD NativeDrop(PDRAGINFO pdinfo, HWND hwnd, PRBool* rendering);
00087   NS_IMETHOD NativeRenderComplete(PDRAGTRANSFER pdxfer, USHORT usResult);
00088   NS_IMETHOD NativeDataToTransferable( PCSZ pszText, PCSZ pszTitle,
00089                                        PRBool isUrl);
00090 
00091   nsresult SaveAsContents(PCSZ szDest, nsIURL* aURL);
00092   nsresult SaveAsURL(PCSZ szDest, nsIURI* aURI);
00093   nsresult SaveAsText(PCSZ szDest, nsISupportsString* aString);
00094   nsresult GetUrlAndTitle(nsISupports* aGenericData, char** aTargetName);
00095   nsresult GetUniTextTitle(nsISupports* aGenericData, char** aTargetName);
00096 
00097   HWND     mDragWnd;
00098   char*    mMimeType;
00099   nsCOMPtr<nsISupportsArray> mSourceDataItems;
00100   nsCOMPtr<nsISupports>      mSourceData;
00101 
00102   friend MRESULT EXPENTRY nsDragWindowProc( HWND, ULONG, MPARAM, MPARAM);
00103 };
00104 
00105 #endif // nsDragService_h__