mirror of
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103 lines
3.1 KiB
C++
103 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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/AsyncEventDispatcher.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
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#include "mozilla/dom/EventTarget.h"
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#include "nsContentUtils.h"
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#include "nsIDOMEvent.h"
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namespace mozilla {
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using namespace dom;
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/******************************************************************************
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* mozilla::AsyncEventDispatcher
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******************************************************************************/
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AsyncEventDispatcher::AsyncEventDispatcher(EventTarget* aTarget,
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WidgetEvent& aEvent)
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: mTarget(aTarget)
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{
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MOZ_ASSERT(mTarget);
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RefPtr<Event> event =
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EventDispatcher::CreateEvent(aTarget, nullptr, &aEvent, EmptyString());
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mEvent = event.forget();
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NS_ASSERTION(mEvent, "Should never fail to create an event");
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mEvent->DuplicatePrivateData();
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mEvent->SetTrusted(aEvent.IsTrusted());
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}
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NS_IMETHODIMP
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AsyncEventDispatcher::Run()
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{
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if (mCanceled) {
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return NS_OK;
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}
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mTarget->AsyncEventRunning(this);
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RefPtr<Event> event = mEvent ? mEvent->InternalDOMEvent() : nullptr;
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if (!event) {
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event = NS_NewDOMEvent(mTarget, nullptr, nullptr);
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event->InitEvent(mEventType, mBubbles, false);
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event->SetTrusted(true);
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}
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if (mOnlyChromeDispatch) {
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MOZ_ASSERT(event->IsTrusted());
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event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
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}
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bool dummy;
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mTarget->DispatchEvent(event, &dummy);
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return NS_OK;
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}
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nsresult
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AsyncEventDispatcher::Cancel()
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{
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mCanceled = true;
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return NS_OK;
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}
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nsresult
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AsyncEventDispatcher::PostDOMEvent()
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{
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RefPtr<AsyncEventDispatcher> ensureDeletionWhenFailing = this;
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if (NS_IsMainThread()) {
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if (nsCOMPtr<nsIGlobalObject> global = mTarget->GetOwnerGlobal()) {
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return global->Dispatch("AsyncEventDispatcher", TaskCategory::Other, ensureDeletionWhenFailing.forget());
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}
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// Sometimes GetOwnerGlobal returns null because it uses
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// GetScriptHandlingObject rather than GetScopeObject.
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if (nsCOMPtr<nsINode> node = do_QueryInterface(mTarget)) {
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nsCOMPtr<nsIDocument> doc = node->OwnerDoc();
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return doc->Dispatch("AsyncEventDispatcher", TaskCategory::Other, ensureDeletionWhenFailing.forget());
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}
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}
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return NS_DispatchToCurrentThread(this);
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}
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void
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AsyncEventDispatcher::RunDOMEventWhenSafe()
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{
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RefPtr<AsyncEventDispatcher> ensureDeletionWhenFailing = this;
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nsContentUtils::AddScriptRunner(this);
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}
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/******************************************************************************
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* mozilla::LoadBlockingAsyncEventDispatcher
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******************************************************************************/
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LoadBlockingAsyncEventDispatcher::~LoadBlockingAsyncEventDispatcher()
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{
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if (mBlockedDoc) {
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mBlockedDoc->UnblockOnload(true);
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}
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}
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} // namespace mozilla
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