dom/debugger/EventCallbackDebuggerNotification.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_EventCallbackDebuggerNotification_h
   8 #define mozilla_dom_EventCallbackDebuggerNotification_h
   9
  10 #include "CallbackDebuggerNotification.h"
  11 #include "DebuggerNotificationManager.h"
  12 #include "mozilla/dom/Event.h"
  13 #include "mozilla/RefPtr.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     if (MOZ_UNLIKELY(manager)) {
  79       DispatchToManager(manager, aPhase);
  80     }
  81   }
  82
  83   MOZ_CAN_RUN_SCRIPT void DispatchToManager(
  84       const RefPtr<DebuggerNotificationManager>& aManager,
  85       CallbackDebuggerNotificationPhase aPhase);
  86
  87   nsIGlobalObject* mDebuggeeGlobal;
  88   mozilla::dom::EventTarget* mEventTarget;
  89   mozilla::dom::Event* mEvent;
  90 };
  91
  92 }  // namespace mozilla::dom
  93
  94 #endif  // mozilla_dom_EventCallbackDebuggerNotification_h