gecko/js/xpconnect/src/qsObjectHelper.h

65 lines
1.8 KiB
C++

/* 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 qsObjectHelper_h
#define qsObjectHelper_h
#include "xpcObjectHelper.h"
#include "nsAutoPtr.h"
#include "nsCOMPtr.h"
#include "nsIDOMNode.h"
#include "nsINode.h"
#include "nsWrapperCache.h"
#include "mozilla/TypeTraits.h"
template <typename T>
struct qsIsNode
{
static const bool value =
mozilla::IsBaseOf<nsINode, T>::value ||
mozilla::IsBaseOf<nsIDOMNode, T>::value;
};
class qsObjectHelper : public xpcObjectHelper
{
public:
template <class T>
inline
qsObjectHelper(T *aObject, nsWrapperCache *aCache)
: xpcObjectHelper(ToSupports(aObject), ToCanonicalSupports(aObject),
aCache, qsIsNode<T>::value)
{}
template <class T>
inline
qsObjectHelper(nsCOMPtr<T>& aObject, nsWrapperCache *aCache)
: xpcObjectHelper(ToSupports(aObject.get()),
ToCanonicalSupports(aObject.get()), aCache,
qsIsNode<T>::value)
{
if (mCanonical) {
// Transfer the strong reference.
mCanonicalStrong = dont_AddRef(mCanonical);
aObject.forget();
}
}
template <class T>
inline
qsObjectHelper(nsRefPtr<T>& aObject, nsWrapperCache *aCache)
: xpcObjectHelper(ToSupports(aObject.get()),
ToCanonicalSupports(aObject.get()), aCache,
qsIsNode<T>::value)
{
if (mCanonical) {
// Transfer the strong reference.
mCanonicalStrong = dont_AddRef(mCanonical);
aObject.forget();
}
}
};
#endif