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-rw-r--r--widget/nsTransferable.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/widget/nsTransferable.h b/widget/nsTransferable.h
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+++ b/widget/nsTransferable.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsTransferable_h__
+#define nsTransferable_h__
+
+#include "nsIContentPolicyBase.h"
+#include "nsIFormatConverter.h"
+#include "nsITransferable.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "nsIPrincipal.h"
+
+class nsIMutableArray;
+class nsString;
+
+//
+// DataStruct
+//
+// Holds a flavor (a mime type) that describes the data and the associated data.
+//
+struct DataStruct
+{
+ explicit DataStruct ( const char* aFlavor )
+ : mDataLen(0), mFlavor(aFlavor), mCacheFileName(nullptr) { }
+ ~DataStruct();
+
+ const nsCString& GetFlavor() const { return mFlavor; }
+ void SetData( nsISupports* inData, uint32_t inDataLen, bool aIsPrivateData );
+ void GetData( nsISupports** outData, uint32_t *outDataLen );
+ already_AddRefed<nsIFile> GetFileSpec(const char* aFileName);
+ bool IsDataAvailable() const { return (mData && mDataLen > 0) || (!mData && mCacheFileName); }
+
+protected:
+
+ enum {
+ // The size of data over which we write the data to disk rather than
+ // keep it around in memory.
+ kLargeDatasetSize = 1000000 // 1 million bytes
+ };
+
+ nsresult WriteCache(nsISupports* aData, uint32_t aDataLen );
+ nsresult ReadCache(nsISupports** aData, uint32_t* aDataLen );
+
+ nsCOMPtr<nsISupports> mData; // OWNER - some varient of primitive wrapper
+ uint32_t mDataLen;
+ const nsCString mFlavor;
+ char * mCacheFileName;
+
+};
+
+/**
+ * XP Transferable wrapper
+ */
+
+class nsTransferable : public nsITransferable
+{
+public:
+
+ nsTransferable();
+
+ // nsISupports
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSITRANSFERABLE
+
+protected:
+ virtual ~nsTransferable();
+
+ // get flavors w/out converter
+ already_AddRefed<nsIMutableArray> GetTransferDataFlavors();
+
+ nsTArray<DataStruct> mDataArray;
+ nsCOMPtr<nsIFormatConverter> mFormatConv;
+ bool mPrivateData;
+ nsCOMPtr<nsIPrincipal> mRequestingPrincipal;
+ nsContentPolicyType mContentPolicyType;
+#if DEBUG
+ bool mInitialized;
+#endif
+
+};
+
+#endif // nsTransferable_h__