dom/debugger/CallbackDebuggerNotification.h

   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 #ifndef mozilla_dom_CallbackDebuggerNotification_h
   8 #define mozilla_dom_CallbackDebuggerNotification_h
   9
  10 #include "DebuggerNotification.h"
  11 #include "DebuggerNotificationManager.h"
  12
  13 namespace mozilla::dom {
  14
  15 class CallbackDebuggerNotification : public DebuggerNotification {
  16  public:
  17   NS_DECL_ISUPPORTS_INHERITED
  18   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CallbackDebuggerNotification,
  19                                            DebuggerNotification)
  20
  21   CallbackDebuggerNotification(nsIGlobalObject* aDebuggeeGlobal,
  22                                DebuggerNotificationType aType,
  23                                CallbackDebuggerNotificationPhase aPhase,
  24                                nsIGlobalObject* aOwnerGlobal = nullptr)
  25       : DebuggerNotification(aDebuggeeGlobal, aType, aOwnerGlobal),
  26         mPhase(aPhase) {}
  27
  28   // nsWrapperCache
  29   virtual JSObject* WrapObject(JSContext* aCx,
  30                                JS::Handle<JSObject*> aGivenProto) override;
  31
  32   already_AddRefed<DebuggerNotification> CloneInto(
  33       nsIGlobalObject* aNewOwner) const override;
  34
  35   CallbackDebuggerNotificationPhase Phase() const { return mPhase; }
  36
  37  protected:
  38   ~CallbackDebuggerNotification() = default;
  39
  40   CallbackDebuggerNotificationPhase mPhase;
  41 };
  42
  43 class MOZ_RAII CallbackDebuggerNotificationGuard final {
  44  public:
  45   MOZ_CAN_RUN_SCRIPT CallbackDebuggerNotificationGuard(
  46       nsIGlobalObject* aDebuggeeGlobal, DebuggerNotificationType aType)
  47       : mDebuggeeGlobal(aDebuggeeGlobal), mType(aType) {
  48     Dispatch(CallbackDebuggerNotificationPhase::Pre);
  49   }
  50   CallbackDebuggerNotificationGuard(const CallbackDebuggerNotificationGuard&) =
  51       delete;
  52   CallbackDebuggerNotificationGuard(CallbackDebuggerNotificationGuard&&) =
  53       delete;
  54   CallbackDebuggerNotificationGuard& operator=(
  55       const CallbackDebuggerNotificationGuard&) = delete;
  56   CallbackDebuggerNotificationGuard& operator=(
  57       CallbackDebuggerNotificationGuard&&) = delete;
  58
  59   MOZ_CAN_RUN_SCRIPT ~CallbackDebuggerNotificationGuard() {
  60     Dispatch(CallbackDebuggerNotificationPhase::Post);
  61   }
  62
  63  private:
  64   MOZ_CAN_RUN_SCRIPT void Dispatch(CallbackDebuggerNotificationPhase aPhase) {
  65     auto manager = DebuggerNotificationManager::ForDispatch(mDebuggeeGlobal);
  66     if (MOZ_UNLIKELY(manager)) {
  67       manager->Dispatch<CallbackDebuggerNotification>(mType, aPhase);
  68     }
  69   }
  70
  71   nsIGlobalObject* mDebuggeeGlobal;
  72   DebuggerNotificationType mType;
  73 };
  74
  75 }  // namespace mozilla::dom
  76
  77 #endif  // mozilla_dom_CallbackDebuggerNotification_h