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76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_StructuredCloneHelper_h
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#define mozilla_dom_StructuredCloneHelper_h
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#include "js/StructuredClone.h"
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#include "nsAutoPtr.h"
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namespace mozilla {
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namespace dom {
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class StructuredCloneHelperInternal
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{
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public:
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// These methods should be implemented in order to clone data.
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// Read more documentation in js/public/StructuredClone.h.
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virtual JSObject* ReadCallback(JSContext* aCx,
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JSStructuredCloneReader* aReader,
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uint32_t aTag,
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uint32_t aIndex) = 0;
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virtual bool WriteCallback(JSContext* aCx,
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JSStructuredCloneWriter* aWriter,
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JS::Handle<JSObject*> aObj) = 0;
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// If these 3 methods are not implement, transfering objects will not be
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// allowed.
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virtual bool
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ReadTransferCallback(JSContext* aCx,
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JSStructuredCloneReader* aReader,
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uint32_t aTag,
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void* aContent,
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uint64_t aExtraData,
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JS::MutableHandleObject aReturnObject);
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virtual bool
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WriteTransferCallback(JSContext* aCx,
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JS::Handle<JSObject*> aObj,
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// Output:
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uint32_t* aTag,
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JS::TransferableOwnership* aOwnership,
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void** aContent,
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uint64_t* aExtraData);
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virtual void
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FreeTransferCallback(uint32_t aTag,
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JS::TransferableOwnership aOwnership,
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void* aContent,
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uint64_t aExtraData);
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// These methods are what you should use.
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bool Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue);
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bool Write(JSContext* aCx,
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JS::Handle<JS::Value> aValue,
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JS::Handle<JS::Value> aTransfer);
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bool Read(JSContext* aCx,
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JS::MutableHandle<JS::Value> aValue);
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protected:
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nsAutoPtr<JSAutoStructuredCloneBuffer> mBuffer;
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};
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} // dom namespace
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} // mozilla namespace
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#endif // mozilla_dom_StructuredCloneHelper_h
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