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/* -*- 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_
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