tor-browser

The Tor Browser
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CallbackFunction.h (2208B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 /**
      8 * A common base class for representing WebIDL callback function types in C++.
      9 *
     10 * This class implements common functionality like lifetime
     11 * management, initialization with the callable, and setup of the call
     12 * environment.  Subclasses corresponding to particular callback
     13 * function types should provide a Call() method that actually does
     14 * the call.
     15 */
     16 
     17 #ifndef mozilla_dom_CallbackFunction_h
     18 #define mozilla_dom_CallbackFunction_h
     19 
     20 #include "mozilla/dom/CallbackObject.h"
     21 
     22 namespace mozilla::dom {
     23 
     24 class CallbackFunction : public CallbackObject {
     25 public:
     26  // See CallbackObject for an explanation of the arguments.
     27  explicit CallbackFunction(JSContext* aCx, JS::Handle<JSObject*> aCallable,
     28                            JS::Handle<JSObject*> aCallableGlobal,
     29                            nsIGlobalObject* aIncumbentGlobal)
     30      : CallbackObject(aCx, aCallable, aCallableGlobal, aIncumbentGlobal) {}
     31 
     32  // See CallbackObject for an explanation of the arguments.
     33  explicit CallbackFunction(JSObject* aCallable, JSObject* aCallableGlobal,
     34                            JSObject* aAsyncStack,
     35                            nsIGlobalObject* aIncumbentGlobal)
     36      : CallbackObject(aCallable, aCallableGlobal, aAsyncStack,
     37                       aIncumbentGlobal) {}
     38 
     39  JSObject* CallableOrNull() const { return CallbackOrNull(); }
     40 
     41  JSObject* CallablePreserveColor() const { return CallbackPreserveColor(); }
     42 
     43 protected:
     44  explicit CallbackFunction(CallbackFunction* aCallbackFunction)
     45      : CallbackObject(aCallbackFunction) {}
     46 
     47  // See CallbackObject for an explanation of the arguments.
     48  CallbackFunction(JSObject* aCallable, JSObject* aCallableGlobal,
     49                   const FastCallbackConstructor&)
     50      : CallbackObject(aCallable, aCallableGlobal, FastCallbackConstructor()) {}
     51 };
     52 
     53 }  // namespace mozilla::dom
     54 
     55 #endif  // mozilla_dom_CallbackFunction_h