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Moonchild
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/EventListenerManager.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/EventTarget.h"
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#include "mozilla/dom/EventTargetBinding.h"
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#include "mozilla/dom/ConstructibleEventTarget.h"
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#include "nsIGlobalObject.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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/* static */
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already_AddRefed<EventTarget>
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EventTarget::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
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{
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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if (!global) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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RefPtr<EventTarget> target = new ConstructibleEventTarget(global);
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return target.forget();
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}
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void
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EventTarget::RemoveEventListener(const nsAString& aType,
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EventListener* aListener,
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const EventListenerOptionsOrBoolean& aOptions,
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ErrorResult& aRv)
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{
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EventListenerManager* elm = GetExistingListenerManager();
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if (elm) {
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elm->RemoveEventListener(aType, aListener, aOptions);
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}
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}
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EventHandlerNonNull*
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EventTarget::GetEventHandler(nsIAtom* aType, const nsAString& aTypeString)
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{
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EventListenerManager* elm = GetExistingListenerManager();
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return elm ? elm->GetEventHandler(aType, aTypeString) : nullptr;
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}
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void
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EventTarget::SetEventHandler(const nsAString& aType,
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EventHandlerNonNull* aHandler,
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ErrorResult& aRv)
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{
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if (!StringBeginsWith(aType, NS_LITERAL_STRING("on"))) {
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aRv.Throw(NS_ERROR_INVALID_ARG);
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return;
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}
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if (NS_IsMainThread()) {
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nsCOMPtr<nsIAtom> type = NS_Atomize(aType);
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SetEventHandler(type, EmptyString(), aHandler);
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return;
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}
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SetEventHandler(nullptr,
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Substring(aType, 2), // Remove "on"
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aHandler);
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}
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void
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EventTarget::SetEventHandler(nsIAtom* aType, const nsAString& aTypeString,
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EventHandlerNonNull* aHandler)
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{
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GetOrCreateListenerManager()->SetEventHandler(aType, aTypeString, aHandler);
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}
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bool
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EventTarget::IsApzAware() const
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{
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EventListenerManager* elm = GetExistingListenerManager();
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return elm && elm->HasApzAwareListeners();
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}
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bool
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EventTarget::DispatchEvent(JSContext* aCx,
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Event& aEvent,
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ErrorResult& aRv)
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{
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bool result = false;
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aRv = DispatchEvent(&aEvent, &result);
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return !aEvent.DefaultPrevented(aCx);
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}
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} // namespace dom
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} // namespace mozilla
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