зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
3.4 KiB
C++
111 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsTransferable_h__
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#define nsTransferable_h__
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#include "nsIFormatConverter.h"
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#include "nsITransferable.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsTArray.h"
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class nsString;
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class nsDataObj;
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//
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// DataStruct
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//
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// Holds a flavor (a mime type) that describes the data and the associated data.
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//
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struct DataStruct
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{
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DataStruct ( const char* aFlavor )
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: mDataLen(0), mFlavor(aFlavor), mCacheFileName(nsnull) { }
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~DataStruct();
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const nsCString& GetFlavor() const { return mFlavor; }
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void SetData( nsISupports* inData, PRUint32 inDataLen );
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void GetData( nsISupports** outData, PRUint32 *outDataLen );
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nsIFile * GetFileSpec(const char * aFileName);
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bool IsDataAvailable() const { return (mData && mDataLen > 0) || (!mData && mCacheFileName); }
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protected:
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enum {
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// The size of data over which we write the data to disk rather than
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// keep it around in memory.
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kLargeDatasetSize = 1000000 // 1 million bytes
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};
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nsresult WriteCache(nsISupports* aData, PRUint32 aDataLen );
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nsresult ReadCache(nsISupports** aData, PRUint32* aDataLen );
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nsCOMPtr<nsISupports> mData; // OWNER - some varient of primitive wrapper
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PRUint32 mDataLen;
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const nsCString mFlavor;
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char * mCacheFileName;
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};
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/**
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* XP Transferable wrapper
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*/
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class nsTransferable : public nsITransferable
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{
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public:
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nsTransferable();
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virtual ~nsTransferable();
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// nsISupports
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NS_DECL_ISUPPORTS
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NS_DECL_NSITRANSFERABLE
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protected:
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// get flavors w/out converter
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nsresult GetTransferDataFlavors(nsISupportsArray** aDataFlavorList);
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nsTArray<DataStruct> mDataArray;
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nsCOMPtr<nsIFormatConverter> mFormatConv;
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};
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#endif // nsTransferable_h__
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