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f771d7e529
We want to be able to enter the Realm we were in when the callback was created before calling it, but if the callback stores a cross-compartment wrapper we don't really have a good way to find that Realm. So we store it explicitly by storing a global when the callback is created. The changes to the constructor signatures to use JSObject* instead of JS::Handle<JSObject*> are so we can avoid having to root the global for these calls. These changes make two of the constructors ambiguous when nullptr is being passed for the first arg; this patch adds casts to disambiguate.
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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/**
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* A common base class for representing WebIDL callback interface types in C++.
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*
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* This class implements common functionality like lifetime management,
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* initialization with the callback object, and setup of the call environment.
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* Subclasses corresponding to particular callback interface types should
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* provide methods that actually do the various necessary calls.
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*/
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#ifndef mozilla_dom_CallbackInterface_h
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#define mozilla_dom_CallbackInterface_h
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#include "mozilla/dom/CallbackObject.h"
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namespace mozilla {
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namespace dom {
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class CallbackInterface : public CallbackObject
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{
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public:
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// See CallbackObject for an explanation of the arguments.
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explicit CallbackInterface(JSContext* aCx, JS::Handle<JSObject*> aCallback,
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JS::Handle<JSObject*> aCallbackGlobal,
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nsIGlobalObject* aIncumbentGlobal)
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: CallbackObject(aCx, aCallback, aCallbackGlobal, aIncumbentGlobal)
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{
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}
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// See CallbackObject for an explanation of the arguments.
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explicit CallbackInterface(JSObject* aCallback,
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JSObject* aCallbackGlobal,
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JSObject* aAsyncStack,
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nsIGlobalObject* aIncumbentGlobal)
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: CallbackObject(aCallback, aCallbackGlobal, aAsyncStack, aIncumbentGlobal)
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{
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}
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protected:
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bool GetCallableProperty(JSContext* cx, JS::Handle<jsid> aPropId,
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JS::MutableHandle<JS::Value> aCallable);
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// See CallbackObject for an explanation of the arguments.
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CallbackInterface(JSObject* aCallback,
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JSObject* aCallbackGlobal,
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const FastCallbackConstructor&)
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: CallbackObject(aCallback, aCallbackGlobal, FastCallbackConstructor())
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{
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}
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_CallbackFunction_h
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