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The Tor Browser
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EventCallbackDebuggerNotification.h (3487B)

      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_EventCallbackDebuggerNotification_h
      8 #define mozilla_dom_EventCallbackDebuggerNotification_h
      9 
     10 #include "CallbackDebuggerNotification.h"
     11 #include "DebuggerNotificationManager.h"
     12 #include "mozilla/RefPtr.h"
     13 #include "mozilla/dom/Event.h"
     14 
     15 namespace mozilla::dom {
     16 
     17 class EventCallbackDebuggerNotification : public CallbackDebuggerNotification {
     18 public:
     19  NS_DECL_ISUPPORTS_INHERITED
     20  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(EventCallbackDebuggerNotification,
     21                                           CallbackDebuggerNotification)
     22 
     23  EventCallbackDebuggerNotification(
     24      nsIGlobalObject* aDebuggeeGlobal, DebuggerNotificationType aType,
     25      Event* aEvent, EventCallbackDebuggerNotificationType aTargetType,
     26      CallbackDebuggerNotificationPhase aPhase,
     27      nsIGlobalObject* aOwnerGlobal = nullptr)
     28      : CallbackDebuggerNotification(aDebuggeeGlobal, aType, aPhase,
     29                                     aOwnerGlobal),
     30        mEvent(aEvent),
     31        mTargetType(aTargetType) {}
     32 
     33  // nsWrapperCache
     34  virtual JSObject* WrapObject(JSContext* aCx,
     35                               JS::Handle<JSObject*> aGivenProto) override;
     36 
     37  already_AddRefed<DebuggerNotification> CloneInto(
     38      nsIGlobalObject* aNewOwner) const override;
     39 
     40  mozilla::dom::Event* Event() const { return mEvent; }
     41  EventCallbackDebuggerNotificationType TargetType() const {
     42    return mTargetType;
     43  }
     44 
     45 private:
     46  ~EventCallbackDebuggerNotification() = default;
     47 
     48  RefPtr<mozilla::dom::Event> mEvent;
     49  EventCallbackDebuggerNotificationType mTargetType;
     50 };
     51 
     52 class MOZ_RAII EventCallbackDebuggerNotificationGuard final {
     53 public:
     54  MOZ_CAN_RUN_SCRIPT_BOUNDARY explicit EventCallbackDebuggerNotificationGuard(
     55      mozilla::dom::EventTarget* aEventTarget, mozilla::dom::Event* aEvent)
     56      : mDebuggeeGlobal(aEventTarget ? aEventTarget->GetOwnerGlobal()
     57                                     : nullptr),
     58        mEventTarget(aEventTarget),
     59        mEvent(aEvent) {
     60    Dispatch(CallbackDebuggerNotificationPhase::Pre);
     61  }
     62  EventCallbackDebuggerNotificationGuard(
     63      const EventCallbackDebuggerNotificationGuard&) = delete;
     64  EventCallbackDebuggerNotificationGuard(
     65      EventCallbackDebuggerNotificationGuard&&) = delete;
     66  EventCallbackDebuggerNotificationGuard& operator=(
     67      const EventCallbackDebuggerNotificationGuard&) = delete;
     68  EventCallbackDebuggerNotificationGuard& operator=(
     69      EventCallbackDebuggerNotificationGuard&&) = delete;
     70 
     71  MOZ_CAN_RUN_SCRIPT_BOUNDARY ~EventCallbackDebuggerNotificationGuard() {
     72    Dispatch(CallbackDebuggerNotificationPhase::Post);
     73  }
     74 
     75 private:
     76  MOZ_CAN_RUN_SCRIPT void Dispatch(CallbackDebuggerNotificationPhase aPhase) {
     77    auto manager = DebuggerNotificationManager::ForDispatch(mDebuggeeGlobal);
     78    DispatchToManager(manager, aPhase);
     79  }
     80 
     81  MOZ_CAN_RUN_SCRIPT void DispatchToManager(
     82      const RefPtr<DebuggerNotificationManager>& aManager,
     83      CallbackDebuggerNotificationPhase aPhase);
     84 
     85  nsIGlobalObject* mDebuggeeGlobal;
     86  mozilla::dom::EventTarget* mEventTarget;
     87  mozilla::dom::Event* mEvent;
     88 };
     89 
     90 }  // namespace mozilla::dom
     91 
     92 #endif  // mozilla_dom_EventCallbackDebuggerNotification_h