mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-03 02:25:34 +00:00
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/* -*- 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_MozQueryInterface
|
|
#define mozilla_dom_MozQueryInterface
|
|
|
|
/**
|
|
* This class implements an optimized QueryInterface method for
|
|
* XPConnect-wrapped JS objects.
|
|
*
|
|
* For JavaScript callers, it behaves as an ordinary QueryInterface method,
|
|
* returning its `this` object or throwing depending on the interface it was
|
|
* passed.
|
|
*
|
|
* For native XPConnect callers, we bypass JSAPI entirely, and directly check
|
|
* whether the queried interface is in the interfaces list.
|
|
*/
|
|
|
|
#include "mozilla/dom/BindingDeclarations.h"
|
|
#include "mozilla/dom/NonRefcountedDOMObject.h"
|
|
#include "mozilla/ErrorResult.h"
|
|
#include "nsID.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class MozQueryInterface final : public NonRefcountedDOMObject {
|
|
public:
|
|
explicit MozQueryInterface(nsTArray<nsIID>&& aInterfaces)
|
|
: mInterfaces(std::move(aInterfaces)) {}
|
|
|
|
bool QueriesTo(const nsIID& aIID) const;
|
|
|
|
void LegacyCall(JSContext* cx, JS::Handle<JS::Value> thisv,
|
|
JS::Handle<JS::Value> aIID,
|
|
JS::MutableHandle<JS::Value> aResult, ErrorResult& aRv) const;
|
|
|
|
nsISupports* GetParentObject() const { return nullptr; }
|
|
|
|
bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
|
|
JS::MutableHandle<JSObject*> aReflector);
|
|
|
|
private:
|
|
nsTArray<nsIID> mInterfaces;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_dom_MozQueryInterface
|