gecko/dom/events/AsyncEventDispatcher.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 04:12:37 -07:00
/* 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/. */
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/BasicEvents.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
#include "mozilla/dom/EventTarget.h"
#include "nsContentUtils.h"
#include "nsIDOMEvent.h"
namespace mozilla {
using namespace dom;
/******************************************************************************
* mozilla::AsyncEventDispatcher
******************************************************************************/
AsyncEventDispatcher::AsyncEventDispatcher(nsINode* aEventNode,
WidgetEvent& aEvent)
: mEventNode(aEventNode)
, mDispatchChromeOnly(false)
{
MOZ_ASSERT(mEventNode);
EventDispatcher::CreateEvent(aEventNode, nullptr, &aEvent, EmptyString(),
getter_AddRefs(mEvent));
NS_ASSERTION(mEvent, "Should never fail to create an event");
mEvent->DuplicatePrivateData();
mEvent->SetTrusted(aEvent.mFlags.mIsTrusted);
}
NS_IMETHODIMP
AsyncEventDispatcher::Run()
{
if (mEvent) {
if (mDispatchChromeOnly) {
MOZ_ASSERT(mEvent->InternalDOMEvent()->IsTrusted());
nsCOMPtr<nsIDocument> ownerDoc = mEventNode->OwnerDoc();
nsPIDOMWindow* window = ownerDoc->GetWindow();
if (!window) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<EventTarget> target = window->GetParentTarget();
if (!target) {
return NS_ERROR_INVALID_ARG;
}
EventDispatcher::DispatchDOMEvent(target, nullptr, mEvent,
nullptr, nullptr);
} else {
nsCOMPtr<EventTarget> target = mEventNode.get();
bool defaultActionEnabled; // This is not used because the caller is async
target->DispatchEvent(mEvent, &defaultActionEnabled);
}
} else {
nsIDocument* doc = mEventNode->OwnerDoc();
if (mDispatchChromeOnly) {
nsContentUtils::DispatchChromeEvent(doc, mEventNode, mEventType,
mBubbles, false);
} else {
nsContentUtils::DispatchTrustedEvent(doc, mEventNode, mEventType,
mBubbles, false);
}
}
return NS_OK;
}
nsresult
AsyncEventDispatcher::PostDOMEvent()
{
return NS_DispatchToCurrentThread(this);
}
void
AsyncEventDispatcher::RunDOMEventWhenSafe()
{
nsContentUtils::AddScriptRunner(this);
}
/******************************************************************************
* mozilla::LoadBlockingAsyncEventDispatcher
******************************************************************************/
LoadBlockingAsyncEventDispatcher::~LoadBlockingAsyncEventDispatcher()
{
if (mBlockedDoc) {
mBlockedDoc->UnblockOnload(true);
}
}
} // namespace mozilla