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nsUnicharStreamLoader.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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) 2002
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *    Boris Zbarsky <bzbarsky@mit.edu>  (original author)
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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00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
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00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef nsUnicharStreamLoader_h__
00040 #define nsUnicharStreamLoader_h__
00041 
00042 #include "nsIUnicharStreamLoader.h"
00043 #include "nsIStreamListener.h"
00044 #include "nsCOMPtr.h"
00045 #include "nsIChannel.h"
00046 #include "nsString.h"
00047 #include "nsIInputStream.h"
00048 #include "nsIOutputStream.h"
00049 
00050 class nsUnicharStreamLoader : public nsIUnicharStreamLoader,
00051                               public nsIStreamListener
00052 {
00053 public:
00054   NS_DECL_ISUPPORTS
00055   NS_DECL_NSIUNICHARSTREAMLOADER
00056   NS_DECL_NSIREQUESTOBSERVER
00057   NS_DECL_NSISTREAMLISTENER
00058 
00059   nsUnicharStreamLoader() { }
00060   virtual ~nsUnicharStreamLoader() {};
00061 
00062   static NS_METHOD
00063   Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
00064 
00065 protected:
00069   static NS_METHOD WriteSegmentFun(nsIInputStream *, void *, const char *,
00070                                    PRUint32, PRUint32, PRUint32 *);
00071 
00072   nsCOMPtr<nsIUnicharStreamLoaderObserver> mObserver;
00073   nsCOMPtr<nsISupports>                    mContext;  // observer's context
00074   nsCString                                mCharset;
00075   nsCOMPtr<nsIChannel>                     mChannel;
00076   nsCOMPtr<nsIInputStream>                 mInputStream;
00077   nsCOMPtr<nsIOutputStream>                mOutputStream;
00078   PRUint32                                 mSegmentSize;
00079   
00080 };
00081 
00082 #endif // nsUnicharStreamLoader_h__