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Diffstat (limited to '')
-rw-r--r-- | dom/events/EventListenerService.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/dom/events/EventListenerService.h b/dom/events/EventListenerService.h new file mode 100644 index 0000000000..8b0b95f130 --- /dev/null +++ b/dom/events/EventListenerService.h @@ -0,0 +1,108 @@ +/* -*- 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/. */ + +#ifndef mozilla_EventListenerService_h_ +#define mozilla_EventListenerService_h_ + +#include "jsapi.h" +#include "mozilla/Attributes.h" +#include "nsCycleCollectionParticipant.h" +#include "EventListenerManager.h" +#include "nsIEventListenerService.h" +#include "nsString.h" +#include "nsTObserverArray.h" +#include "nsTHashMap.h" +#include "nsGkAtoms.h" + +class nsIMutableArray; + +namespace mozilla { +namespace dom { +class EventTarget; +} // namespace dom + +template <typename T> +class Maybe; + +class EventListenerChange final : public nsIEventListenerChange { + public: + explicit EventListenerChange(dom::EventTarget* aTarget); + + void AddChangedListenerName(nsAtom* aEventName); + + NS_DECL_ISUPPORTS + NS_DECL_NSIEVENTLISTENERCHANGE + + protected: + virtual ~EventListenerChange(); + nsCOMPtr<dom::EventTarget> mTarget; + nsTArray<RefPtr<nsAtom>> mChangedListenerNames; +}; + +class EventListenerInfo final : public nsIEventListenerInfo { + public: + EventListenerInfo(EventListenerManager* aListenerManager, + const nsAString& aType, + JS::Handle<JSObject*> aScriptedListener, + JS::Handle<JSObject*> aScriptedListenerGlobal, + bool aCapturing, bool aAllowsUntrusted, + bool aInSystemEventGroup, bool aIsHandler); + + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(EventListenerInfo) + NS_DECL_NSIEVENTLISTENERINFO + + protected: + virtual ~EventListenerInfo(); + + bool GetJSVal(JSContext* aCx, Maybe<JSAutoRealm>& aAr, + JS::MutableHandle<JS::Value> aJSVal); + + RefPtr<EventListenerManager> mListenerManager; + nsString mType; + JS::Heap<JSObject*> mScriptedListener; // May be null. + // mScriptedListener may be a cross-compartment wrapper so we cannot use it + // with JSAutoRealm because CCWs are not associated with a single realm. We + // use this global instead (must be same-compartment with mScriptedListener + // and must be non-null if mScriptedListener is non-null). + JS::Heap<JSObject*> mScriptedListenerGlobal; + bool mCapturing; + bool mAllowsUntrusted; + bool mInSystemEventGroup; + bool mIsHandler; +}; + +class EventListenerService final : public nsIEventListenerService { + ~EventListenerService(); + + public: + EventListenerService(); + NS_DECL_ISUPPORTS + NS_DECL_NSIEVENTLISTENERSERVICE + + static void NotifyAboutMainThreadListenerChange(dom::EventTarget* aTarget, + nsAtom* aName) { + if (sInstance) { + sInstance->NotifyAboutMainThreadListenerChangeInternal(aTarget, aName); + } + } + + void NotifyPendingChanges(); + + private: + void NotifyAboutMainThreadListenerChangeInternal(dom::EventTarget* aTarget, + nsAtom* aName); + nsTObserverArray<nsCOMPtr<nsIListenerChangeListener>> mChangeListeners; + nsCOMPtr<nsIMutableArray> mPendingListenerChanges; + nsTHashMap<nsISupportsHashKey, RefPtr<EventListenerChange>> + mPendingListenerChangesSet; + + static EventListenerService* sInstance; +}; + +} // namespace mozilla + +#endif // mozilla_EventListenerService_h_ |