本文整理汇总了C++中Listener::IsListening方法的典型用法代码示例。如果您正苦于以下问题：C++ Listener::IsListening方法的具体用法？C++ Listener::IsListening怎么用？C++ Listener::IsListening使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Listener的用法示例。
在下文中一共展示了Listener::IsListening方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: iter
void
EventListenerManager::HandleEventInternal(nsPresContext* aPresContext,
WidgetEvent* aEvent,
nsIDOMEvent** aDOMEvent,
EventTarget* aCurrentTarget,
nsEventStatus* aEventStatus)
{
//Set the value of the internal PreventDefault flag properly based on aEventStatus
if (*aEventStatus == nsEventStatus_eConsumeNoDefault) {
aEvent->mFlags.mDefaultPrevented = true;
}
nsAutoTObserverArray<Listener, 2>::EndLimitedIterator iter(mListeners);
Maybe<nsAutoPopupStatePusher> popupStatePusher;
if (mIsMainThreadELM) {
popupStatePusher.construct(Event::GetEventPopupControlState(aEvent));
}
bool hasListener = false;
while (iter.HasMore()) {
if (aEvent->mFlags.mImmediatePropagationStopped) {
break;
}
Listener* listener = &iter.GetNext();
// Check that the phase is same in event and event listener.
// Handle only trusted events, except when listener permits untrusted events.
if (ListenerCanHandle(listener, aEvent)) {
hasListener = true;
if (listener->IsListening(aEvent) &&
(aEvent->mFlags.mIsTrusted ||
listener->mFlags.mAllowUntrustedEvents)) {
if (!*aDOMEvent) {
// This is tiny bit slow, but happens only once per event.
nsCOMPtr<EventTarget> et =
do_QueryInterface(aEvent->originalTarget);
EventDispatcher::CreateEvent(et, aPresContext,
aEvent, EmptyString(), aDOMEvent);
}
if (*aDOMEvent) {
if (!aEvent->currentTarget) {
aEvent->currentTarget = aCurrentTarget->GetTargetForDOMEvent();
if (!aEvent->currentTarget) {
break;
}
}
if (NS_FAILED(HandleEventSubType(listener, *aDOMEvent,
aCurrentTarget))) {
aEvent->mFlags.mExceptionHasBeenRisen = true;
}
}
}
}
}
aEvent->currentTarget = nullptr;
if (mIsMainThreadELM && !hasListener) {
mNoListenerForEvent = aEvent->message;
mNoListenerForEventAtom = aEvent->userType;
}
if (aEvent->mFlags.mDefaultPrevented) {
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}示例2: iter
void
EventListenerManager::HandleEventInternal(nsPresContext* aPresContext,
WidgetEvent* aEvent,
nsIDOMEvent** aDOMEvent,
EventTarget* aCurrentTarget,
nsEventStatus* aEventStatus)
{
//Set the value of the internal PreventDefault flag properly based on aEventStatus
if (*aEventStatus == nsEventStatus_eConsumeNoDefault) {
aEvent->mFlags.mDefaultPrevented = true;
}
nsAutoTObserverArray<Listener, 2>::EndLimitedIterator iter(mListeners);
Maybe<nsAutoPopupStatePusher> popupStatePusher;
if (mIsMainThreadELM) {
popupStatePusher.emplace(Event::GetEventPopupControlState(aEvent, *aDOMEvent));
}
bool hasListener = false;
while (iter.HasMore()) {
if (aEvent->mFlags.mImmediatePropagationStopped) {
break;
}
Listener* listener = &iter.GetNext();
// Check that the phase is same in event and event listener.
// Handle only trusted events, except when listener permits untrusted events.
if (ListenerCanHandle(listener, aEvent)) {
hasListener = true;
if (listener->IsListening(aEvent) &&
(aEvent->mFlags.mIsTrusted ||
listener->mFlags.mAllowUntrustedEvents)) {
if (!*aDOMEvent) {
// This is tiny bit slow, but happens only once per event.
nsCOMPtr<EventTarget> et =
do_QueryInterface(aEvent->originalTarget);
EventDispatcher::CreateEvent(et, aPresContext,
aEvent, EmptyString(), aDOMEvent);
}
if (*aDOMEvent) {
if (!aEvent->currentTarget) {
aEvent->currentTarget = aCurrentTarget->GetTargetForDOMEvent();
if (!aEvent->currentTarget) {
break;
}
}
// Maybe add a marker to the docshell's timeline, but only
// bother with all the logic if some docshell is recording.
nsCOMPtr<nsIDocShell> docShell;
bool isTimelineRecording = false;
if (mIsMainThreadELM &&
nsDocShell::gProfileTimelineRecordingsCount > 0 &&
listener->mListenerType != Listener::eNativeListener) {
docShell = GetDocShellForTarget();
if (docShell) {
docShell->GetRecordProfileTimelineMarkers(&isTimelineRecording);
}
if (isTimelineRecording) {
nsDocShell* ds = static_cast<nsDocShell*>(docShell.get());
nsAutoString typeStr;
(*aDOMEvent)->GetType(typeStr);
uint16_t phase;
(*aDOMEvent)->GetEventPhase(&phase);
mozilla::UniquePtr<TimelineMarker> marker =
MakeUnique<EventTimelineMarker>(ds, TRACING_INTERVAL_START,
phase, typeStr);
ds->AddProfileTimelineMarker(Move(marker));
}
}
if (NS_FAILED(HandleEventSubType(listener, *aDOMEvent,
aCurrentTarget))) {
aEvent->mFlags.mExceptionHasBeenRisen = true;
}
if (isTimelineRecording) {
nsDocShell* ds = static_cast<nsDocShell*>(docShell.get());
ds->AddProfileTimelineMarker("DOMEvent", TRACING_INTERVAL_END);
}
}
}
}
}
aEvent->currentTarget = nullptr;
if (mIsMainThreadELM && !hasListener) {
mNoListenerForEvent = aEvent->message;
mNoListenerForEventAtom = aEvent->userType;
}
if (aEvent->mFlags.mDefaultPrevented) {
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}