/* -*- 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/. */ /** * A common base class for representing WebIDL callback function types in C++. * * This class implements common functionality like lifetime * management, initialization with the callable, and setup of the call * environment. Subclasses corresponding to particular callback * function types should provide a Call() method that actually does * the call. */ #ifndef mozilla_dom_CallbackFunction_h #define mozilla_dom_CallbackFunction_h #include "mozilla/dom/CallbackObject.h" namespace mozilla { namespace dom { class CallbackFunction : public CallbackObject { public: // See CallbackObject for an explanation of the arguments. explicit CallbackFunction(JSContext* aCx, JS::Handle<JSObject*> aCallable, nsIGlobalObject* aIncumbentGlobal) : CallbackObject(aCx, aCallable, aIncumbentGlobal) { } // See CallbackObject for an explanation of the arguments. explicit CallbackFunction(JS::Handle<JSObject*> aCallable, JS::Handle<JSObject*> aAsyncStack, nsIGlobalObject* aIncumbentGlobal) : CallbackObject(aCallable, aAsyncStack, aIncumbentGlobal) { } JS::Handle<JSObject*> Callable() const { return Callback(); } JS::Handle<JSObject*> CallablePreserveColor() const { return CallbackPreserveColor(); } bool HasGrayCallable() const { // Play it safe in case this gets called after unlink. return mCallback && JS::ObjectIsMarkedGray(mCallback); } protected: explicit CallbackFunction(CallbackFunction* aCallbackFunction) : CallbackObject(aCallbackFunction) { } // See CallbackObject for an explanation of the arguments. CallbackFunction(JSContext* aCx, JS::Handle<JSObject*> aCallable, nsIGlobalObject* aIncumbentGlobal, const FastCallbackConstructor&) : CallbackObject(aCx, aCallable, aIncumbentGlobal, FastCallbackConstructor()) { } }; } // namespace dom } // namespace mozilla #endif // mozilla_dom_CallbackFunction_h