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/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. All Rights Reserved.
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*
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* Contributor(s):
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* Scott MacGregor <mscott@netscape.com>
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*/
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#ifndef nsExternalHelperAppService_h__
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#define nsExternalHelperAppService_h__
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#include "nsIExternalHelperAppService.h"
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#include "nsIStreamListener.h"
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#include "nsIFile.h"
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#include "nsIFileStreams.h"
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#include "nsIOutputStream.h"
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#include "nsCOMPtr.h"
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class nsExternalAppHandler;
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class nsExternalHelperAppService : public nsIExternalHelperAppService, nsPIExternalAppLauncher
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIEXTERNALHELPERAPPSERVICE
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NS_DECL_NSPIEXTERNALAPPLAUNCHER
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nsExternalHelperAppService();
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virtual ~nsExternalHelperAppService();
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// create an external app handler and bind it with a cookie that came from the OS specific
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// helper app service subclass.
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virtual nsExternalAppHandler * CreateNewExternalHandler(nsISupports * aAppCookie);
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protected:
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};
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// An external app handler is just a small little class that presents itself as
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// a nsIStreamListener. It saves the incoming data into a temp file. The handler
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// is bound to an application when it is created. When it receives an OnStopRequest
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// it launches the application using the temp file it has stored the data into.
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// we create a handler every time we have to process data using a helper app.
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// we need to read the data out of the incoming stream into a buffer which we can then use
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// to write the data into the output stream representing the temp file...
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#define DATA_BUFFER_SIZE (4096*2)
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class nsExternalAppHandler : public nsIStreamListener
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSISTREAMOBSERVER
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nsExternalAppHandler();
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virtual ~nsExternalAppHandler();
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// initialize the handler with a cookie that represents the external
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// application associated with this handler.
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virtual nsresult Init(nsISupports * aExternalApplicationCookie);
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protected:
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nsCOMPtr<nsIFile> mTempFile;
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nsCOMPtr<nsISupports> mExternalApplication;
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nsCOMPtr<nsIOutputStream> mOutStream; // output stream to the temp file...
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char * mDataBuffer;
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};
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#endif // nsExternalHelperAppService_h__
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