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nsClipboard.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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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
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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  *
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
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsClipboard_h__
00039 #define nsClipboard_h__
00040 
00041 #include "nsBaseClipboard.h"
00042 #include "nsIObserver.h"
00043 #include "nsIURI.h"
00044 #include <windows.h>
00045 
00046 class nsITransferable;
00047 class nsIClipboardOwner;
00048 class nsIWidget;
00049 class nsILocalFile;
00050 struct IDataObject;
00051 
00056 class nsClipboard : public nsBaseClipboard,
00057                     public nsIObserver
00058 {
00059 
00060 public:
00061   nsClipboard();
00062   virtual ~nsClipboard();
00063 
00064   NS_DECL_ISUPPORTS_INHERITED
00065 
00066   // nsIObserver
00067   NS_DECL_NSIOBSERVER
00068 
00069   // nsIClipboard
00070   NS_IMETHOD HasDataMatchingFlavors(nsISupportsArray *aFlavorList, PRInt32 aWhichClipboard, PRBool *_retval); 
00071 
00072   // Internal Native Routines
00073   static nsresult CreateNativeDataObject(nsITransferable * aTransferable, 
00074                                          IDataObject ** aDataObj,
00075                                          nsIURI       * uri);
00076   static nsresult SetupNativeDataObject(nsITransferable * aTransferable, 
00077                                         IDataObject * aDataObj);
00078   static nsresult GetDataFromDataObject(IDataObject     * aDataObject,
00079                                         UINT              anIndex,
00080                                         nsIWidget       * aWindow,
00081                                         nsITransferable * aTransferable);
00082   static nsresult GetNativeDataOffClipboard(nsIWidget * aWindow, UINT aIndex, UINT aFormat, void ** aData, PRUint32 * aLen);
00083   static nsresult GetNativeDataOffClipboard(IDataObject * aDataObject, UINT aIndex, UINT aFormat, void ** aData, PRUint32 * aLen);
00084   static nsresult GetGlobalData(HGLOBAL aHGBL, void ** aData, PRUint32 * aLen);
00085   static UINT     GetFormat(const char* aMimeStr);
00086 
00087   static UINT     CF_HTML;
00088   
00089 protected:
00090   NS_IMETHOD SetNativeClipboardData ( PRInt32 aWhichClipboard );
00091   NS_IMETHOD GetNativeClipboardData ( nsITransferable * aTransferable, PRInt32 aWhichClipboard );
00092   
00093   static PRBool IsInternetShortcut ( const nsAString& inFileName ) ;
00094   static PRBool FindURLFromLocalFile ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen ) ;
00095   static PRBool FindUnicodeFromPlainText ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen ) ;
00096   static PRBool FindPlatformHTML ( IDataObject* inDataObject, UINT inIndex, void** outData, PRUint32* outDataLen );
00097   static void ResolveShortcut ( nsILocalFile* inFileName, nsACString& outURL ) ;
00098 
00099   nsIWidget         * mWindow;
00100 
00101 };
00102 
00103 #define SET_FORMATETC(fe, cf, td, asp, li, med)   \
00104         {\
00105         (fe).cfFormat=cf;\
00106         (fe).ptd=td;\
00107         (fe).dwAspect=asp;\
00108         (fe).lindex=li;\
00109         (fe).tymed=med;\
00110         }
00111 
00112 
00113 #endif // nsClipboard_h__
00114