1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/xpwidgets/nsTransferable.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,82 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsTransferable_h__
1.10 +#define nsTransferable_h__
1.11 +
1.12 +#include "nsIFormatConverter.h"
1.13 +#include "nsITransferable.h"
1.14 +#include "nsCOMPtr.h"
1.15 +#include "nsString.h"
1.16 +#include "nsTArray.h"
1.17 +
1.18 +class nsString;
1.19 +class nsDataObj;
1.20 +
1.21 +//
1.22 +// DataStruct
1.23 +//
1.24 +// Holds a flavor (a mime type) that describes the data and the associated data.
1.25 +//
1.26 +struct DataStruct
1.27 +{
1.28 + DataStruct ( const char* aFlavor )
1.29 + : mDataLen(0), mFlavor(aFlavor), mCacheFileName(nullptr) { }
1.30 + ~DataStruct();
1.31 +
1.32 + const nsCString& GetFlavor() const { return mFlavor; }
1.33 + void SetData( nsISupports* inData, uint32_t inDataLen );
1.34 + void GetData( nsISupports** outData, uint32_t *outDataLen );
1.35 + already_AddRefed<nsIFile> GetFileSpec(const char* aFileName);
1.36 + bool IsDataAvailable() const { return (mData && mDataLen > 0) || (!mData && mCacheFileName); }
1.37 +
1.38 +protected:
1.39 +
1.40 + enum {
1.41 + // The size of data over which we write the data to disk rather than
1.42 + // keep it around in memory.
1.43 + kLargeDatasetSize = 1000000 // 1 million bytes
1.44 + };
1.45 +
1.46 + nsresult WriteCache(nsISupports* aData, uint32_t aDataLen );
1.47 + nsresult ReadCache(nsISupports** aData, uint32_t* aDataLen );
1.48 +
1.49 + nsCOMPtr<nsISupports> mData; // OWNER - some varient of primitive wrapper
1.50 + uint32_t mDataLen;
1.51 + const nsCString mFlavor;
1.52 + char * mCacheFileName;
1.53 +
1.54 +};
1.55 +
1.56 +/**
1.57 + * XP Transferable wrapper
1.58 + */
1.59 +
1.60 +class nsTransferable : public nsITransferable
1.61 +{
1.62 +public:
1.63 +
1.64 + nsTransferable();
1.65 + virtual ~nsTransferable();
1.66 +
1.67 + // nsISupports
1.68 + NS_DECL_ISUPPORTS
1.69 + NS_DECL_NSITRANSFERABLE
1.70 +
1.71 +protected:
1.72 +
1.73 + // get flavors w/out converter
1.74 + nsresult GetTransferDataFlavors(nsISupportsArray** aDataFlavorList);
1.75 +
1.76 + nsTArray<DataStruct> mDataArray;
1.77 + nsCOMPtr<nsIFormatConverter> mFormatConv;
1.78 + bool mPrivateData;
1.79 +#if DEBUG
1.80 + bool mInitialized;
1.81 +#endif
1.82 +
1.83 +};
1.84 +
1.85 +#endif // nsTransferable_h__
