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comparison: widget/xpwidgets/nsTransferable.h
widget/xpwidgets/nsTransferable.h
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- child 10
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef nsTransferable_h__ | |
| 7 #define nsTransferable_h__ | |
| 8 | |
| 9 #include "nsIFormatConverter.h" | |
| 10 #include "nsITransferable.h" | |
| 11 #include "nsCOMPtr.h" | |
| 12 #include "nsString.h" | |
| 13 #include "nsTArray.h" | |
| 14 | |
| 15 class nsString; | |
| 16 class nsDataObj; | |
| 17 | |
| 18 // | |
| 19 // DataStruct | |
| 20 // | |
| 21 // Holds a flavor (a mime type) that describes the data and the associated data. | |
| 22 // | |
| 23 struct DataStruct | |
| 24 { | |
| 25 DataStruct ( const char* aFlavor ) | |
| 26 : mDataLen(0), mFlavor(aFlavor), mCacheFileName(nullptr) { } | |
| 27 ~DataStruct(); | |
| 28 | |
| 29 const nsCString& GetFlavor() const { return mFlavor; } | |
| 30 void SetData( nsISupports* inData, uint32_t inDataLen ); | |
| 31 void GetData( nsISupports** outData, uint32_t *outDataLen ); | |
| 32 already_AddRefed<nsIFile> GetFileSpec(const char* aFileName); | |
| 33 bool IsDataAvailable() const { return (mData && mDataLen > 0) || (!mData && mCacheFileName); } | |
| 34 | |
| 35 protected: | |
| 36 | |
| 37 enum { | |
| 38 // The size of data over which we write the data to disk rather than | |
| 39 // keep it around in memory. | |
| 40 kLargeDatasetSize = 1000000 // 1 million bytes | |
| 41 }; | |
| 42 | |
| 43 nsresult WriteCache(nsISupports* aData, uint32_t aDataLen ); | |
| 44 nsresult ReadCache(nsISupports** aData, uint32_t* aDataLen ); | |
| 45 | |
| 46 nsCOMPtr<nsISupports> mData; // OWNER - some varient of primitive wrapper | |
| 47 uint32_t mDataLen; | |
| 48 const nsCString mFlavor; | |
| 49 char * mCacheFileName; | |
| 50 | |
| 51 }; | |
| 52 | |
| 53 /** | |
| 54 * XP Transferable wrapper | |
| 55 */ | |
| 56 | |
| 57 class nsTransferable : public nsITransferable | |
| 58 { | |
| 59 public: | |
| 60 | |
| 61 nsTransferable(); | |
| 62 virtual ~nsTransferable(); | |
| 63 | |
| 64 // nsISupports | |
| 65 NS_DECL_ISUPPORTS | |
| 66 NS_DECL_NSITRANSFERABLE | |
| 67 | |
| 68 protected: | |
| 69 | |
| 70 // get flavors w/out converter | |
| 71 nsresult GetTransferDataFlavors(nsISupportsArray** aDataFlavorList); | |
| 72 | |
| 73 nsTArray<DataStruct> mDataArray; | |
| 74 nsCOMPtr<nsIFormatConverter> mFormatConv; | |
| 75 bool mPrivateData; | |
| 76 #if DEBUG | |
| 77 bool mInitialized; | |
| 78 #endif | |
| 79 | |
| 80 }; | |
| 81 | |
| 82 #endif // nsTransferable_h__ |
