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-rw-r--r--widget/nsPrimitiveHelpers.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/widget/nsPrimitiveHelpers.h b/widget/nsPrimitiveHelpers.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 nsPrimitiveHelpers_h___
+#define nsPrimitiveHelpers_h___
+
+#include "nsError.h"
+#include "nscore.h"
+#include "nsString.h"
+
+class nsISupports;
+
+class nsPrimitiveHelpers {
+ public:
+ // Given some data and the flavor it corresponds to, creates the appropriate
+ // nsISupports* wrapper for passing across IDL boundaries. The length
+ // parameter should not include the null if the data is null terminated.
+ static void CreatePrimitiveForData(const nsACString& aFlavor,
+ const void* aDataBuff, uint32_t aDataLen,
+ nsISupports** aPrimitive);
+
+ // A specific case of CreatePrimitive for windows CF_HTML handling in
+ // DataTransfer
+ static void CreatePrimitiveForCFHTML(const void* aDataBuff,
+ uint32_t* aDataLen,
+ nsISupports** aPrimitive);
+
+ // Given a nsISupports* primitive and the flavor it represents, creates a new
+ // data buffer with the data in it. This data will be null terminated, but the
+ // length parameter does not reflect that.
+ static void CreateDataFromPrimitive(const nsACString& aFlavor,
+ nsISupports* aPrimitive, void** aDataBuff,
+ uint32_t* aDataLen);
+
+}; // class nsPrimitiveHelpers
+
+class nsLinebreakHelpers {
+ public:
+ // Given some data, convert from the platform linebreaks into the LF expected
+ // by the DOM. This will attempt to convert the data in place, but the buffer
+ // may still need to be reallocated regardless (disposing the old buffer is
+ // taken care of internally, see the note below).
+ //
+ // NOTE: this assumes that it can use 'free' to dispose of the old buffer.
+ static nsresult ConvertPlatformToDOMLinebreaks(bool aIsSingleByteChars,
+ void** ioData,
+ int32_t* ioLengthInBytes);
+
+}; // class nsLinebreakHelpers
+
+#endif // nsPrimitiveHelpers_h___