gecko-dev/dom/ipc/PermissionMessageUtils.h

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1.6 KiB
C
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_dom_permission_message_utils_h__
#define mozilla_dom_permission_message_utils_h__
#include "ipc/IPCMessageUtils.h"
#include "nsCOMPtr.h"
#include "nsIPrincipal.h"
namespace IPC {
template<>
struct ParamTraits<nsIPrincipal>
{
static void Write(Message* aMsg, nsIPrincipal* aParam);
static bool Read(const Message* aMsg, PickleIterator* aIter, RefPtr<nsIPrincipal>* aResult);
};
/**
* Legacy IPC::Principal type. Use nsIPrincipal directly in new IPDL code.
*/
class Principal
{
friend struct ParamTraits<Principal>;
public:
Principal()
: mPrincipal(nullptr)
{}
explicit Principal(nsIPrincipal* aPrincipal)
: mPrincipal(aPrincipal)
{}
operator nsIPrincipal*() const { return mPrincipal.get(); }
Principal& operator=(const Principal& aOther)
{
mPrincipal = aOther.mPrincipal;
return *this;
}
private:
RefPtr<nsIPrincipal> mPrincipal;
};
template <>
struct ParamTraits<Principal>
{
typedef Principal paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, aParam.mPrincipal);
}
static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
{
return ReadParam(aMsg, aIter, &aResult->mPrincipal);
}
};
} // namespace IPC
#endif // mozilla_dom_permission_message_utils_h__