NS_IMPL_CYCLE_COLLECTION_UNLINK_END
nsPIDOMWindow*
EventListenerManager::GetInnerWindowForTarget()
{
nsCOMPtr<nsINode> node = do_QueryInterface(mTarget);
if (node) {
// XXX sXBL/XBL2 issue -- do we really want the owner here? What
// if that's the XBL document?
return node->OwnerDoc()->GetInnerWindow();
}
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
return window;
}
nsIDocShell*
EventListenerManager::GetDocShellForTarget()
{
nsCOMPtr<nsINode> node(do_QueryInterface(mTarget));
nsIDocument* doc = nullptr;
nsIDocShell* docShell = nullptr;
if (node) {
doc = node->OwnerDoc();
if (!doc->GetDocShell()) {
bool ignore;
nsCOMPtr<nsPIDOMWindow> window =
do_QueryInterface(doc->GetScriptHandlingObject(ignore));
if (window) {
doc = window->GetExtantDoc();
}
}
} else {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
doc = window->GetExtantDoc();
}
}
if (!doc) {
nsCOMPtr<DOMEventTargetHelper> helper(do_QueryInterface(mTarget));
if (helper) {
nsPIDOMWindow* window = helper->GetOwner();
if (window) {
doc = window->GetExtantDoc();
}
}
}
if (doc) {
docShell = doc->GetDocShell();
}
return docShell;
}
void
EventListenerManager::RemoveEventListenerInternal(
const EventListenerHolder& aListenerHolder,
uint32_t aType,
nsIAtom* aUserType,
const nsAString& aTypeString,
const EventListenerFlags& aFlags,
bool aAllEvents)
{
if (!aListenerHolder || !aType || mClearingListeners) {
return;
}
Listener* listener;
uint32_t count = mListeners.Length();
uint32_t typeCount = 0;
bool deviceType = IsDeviceType(aType);
#ifdef MOZ_B2G
bool timeChangeEvent = (aType == NS_MOZ_TIME_CHANGE_EVENT);
bool networkEvent = (aType == NS_NETWORK_UPLOAD_EVENT ||
aType == NS_NETWORK_DOWNLOAD_EVENT);
#endif // MOZ_B2G
for (uint32_t i = 0; i < count; ++i) {
listener = &mListeners.ElementAt(i);
if (EVENT_TYPE_EQUALS(listener, aType, aUserType, aTypeString,
aAllEvents)) {
++typeCount;
if (listener->mListener == aListenerHolder &&
listener->mFlags.EqualsIgnoringTrustness(aFlags)) {
nsRefPtr<EventListenerManager> kungFuDeathGrip(this);
mListeners.RemoveElementAt(i);
--count;
mNoListenerForEvent = NS_EVENT_NULL;
mNoListenerForEventAtom = nullptr;
if (mTarget && aUserType) {
mTarget->EventListenerRemoved(aUserType);
}
if (!deviceType
#ifdef MOZ_B2G
&& !timeChangeEvent && !networkEvent
#endif // MOZ_B2G
) {
return;
}
--typeCount;
}
}
}
if (!aAllEvents && deviceType && typeCount == 0) {
DisableDevice(aType);
#ifdef MOZ_B2G
} else if (timeChangeEvent && typeCount == 0) {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
window->DisableTimeChangeNotifications();
}
} else if (!aAllEvents && networkEvent && typeCount == 0) {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
window->DisableNetworkEvent(aType);
}
#endif // MOZ_B2G
}
}
void
EventListenerManager::AddEventListenerInternal(
const EventListenerHolder& aListenerHolder,
uint32_t aType,
nsIAtom* aTypeAtom,
const nsAString& aTypeString,
const EventListenerFlags& aFlags,
bool aHandler,
bool aAllEvents)
{
MOZ_ASSERT((NS_IsMainThread() && aType && aTypeAtom) || // Main thread
(!NS_IsMainThread() && aType && !aTypeString.IsEmpty()) || // non-main-thread
aAllEvents, "Missing type"); // all-events listener
if (!aListenerHolder || mClearingListeners) {
return;
}
// Since there is no public API to call us with an EventListenerHolder, we
// know that there's an EventListenerHolder on the stack holding a strong ref
// to the listener.
Listener* listener;
uint32_t count = mListeners.Length();
for (uint32_t i = 0; i < count; i++) {
listener = &mListeners.ElementAt(i);
// mListener == aListenerHolder is the last one, since it can be a bit slow.
if (listener->mListenerIsHandler == aHandler &&
listener->mFlags == aFlags &&
EVENT_TYPE_EQUALS(listener, aType, aTypeAtom, aTypeString,
aAllEvents) &&
listener->mListener == aListenerHolder) {
return;
}
}
mNoListenerForEvent = NS_EVENT_NULL;
mNoListenerForEventAtom = nullptr;
listener = aAllEvents ? mListeners.InsertElementAt(0) :
mListeners.AppendElement();
listener->mListener = aListenerHolder;
MOZ_ASSERT(aType < PR_UINT16_MAX);
listener->mEventType = aType;
listener->mTypeString = aTypeString;
listener->mTypeAtom = aTypeAtom;
listener->mFlags = aFlags;
listener->mListenerIsHandler = aHandler;
listener->mHandlerIsString = false;
listener->mAllEvents = aAllEvents;
// Detect the type of event listener.
nsCOMPtr<nsIXPConnectWrappedJS> wjs;
if (aFlags.mListenerIsJSListener) {
MOZ_ASSERT(!aListenerHolder.HasWebIDLCallback());
listener->mListenerType = Listener::eJSEventListener;
} else if (aListenerHolder.HasWebIDLCallback()) {
listener->mListenerType = Listener::eWebIDLListener;
} else if ((wjs = do_QueryInterface(aListenerHolder.GetXPCOMCallback()))) {
listener->mListenerType = Listener::eWrappedJSListener;
} else {
listener->mListenerType = Listener::eNativeListener;
}
if (aFlags.mInSystemGroup) {
mMayHaveSystemGroupListeners = true;
}
if (aFlags.mCapture) {
mMayHaveCapturingListeners = true;
}
if (aType == NS_AFTERPAINT) {
mMayHavePaintEventListener = true;
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (window) {
window->SetHasPaintEventListeners();
}
} else if (aType == NS_MOZAUDIOAVAILABLE) {
mMayHaveAudioAvailableEventListener = true;
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (window) {
window->SetHasAudioAvailableEventListeners();
}
} else if (aType >= NS_MUTATION_START && aType <= NS_MUTATION_END) {
// For mutation listeners, we need to update the global bit on the DOM window.
// Otherwise we won't actually fire the mutation event.
mMayHaveMutationListeners = true;
// Go from our target to the nearest enclosing DOM window.
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (window) {
nsCOMPtr<nsIDocument> doc = window->GetExtantDoc();
if (doc) {
doc->WarnOnceAbout(nsIDocument::eMutationEvent);
}
// If aType is NS_MUTATION_SUBTREEMODIFIED, we need to listen all
// mutations. nsContentUtils::HasMutationListeners relies on this.
window->SetMutationListeners((aType == NS_MUTATION_SUBTREEMODIFIED) ?
kAllMutationBits :
MutationBitForEventType(aType));
}
} else if (aTypeAtom == nsGkAtoms::ondeviceorientation) {
EnableDevice(NS_DEVICE_ORIENTATION);
} else if (aTypeAtom == nsGkAtoms::ondeviceproximity || aTypeAtom == nsGkAtoms::onuserproximity) {
EnableDevice(NS_DEVICE_PROXIMITY);
} else if (aTypeAtom == nsGkAtoms::ondevicelight) {
EnableDevice(NS_DEVICE_LIGHT);
} else if (aTypeAtom == nsGkAtoms::ondevicemotion) {
EnableDevice(NS_DEVICE_MOTION);
#ifdef MOZ_B2G
} else if (aTypeAtom == nsGkAtoms::onmoztimechange) {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
window->EnableTimeChangeNotifications();
}
} else if (aTypeAtom == nsGkAtoms::onmoznetworkupload) {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
window->EnableNetworkEvent(NS_NETWORK_UPLOAD_EVENT);
}
} else if (aTypeAtom == nsGkAtoms::onmoznetworkdownload) {
nsCOMPtr<nsPIDOMWindow> window = GetTargetAsInnerWindow();
if (window) {
window->EnableNetworkEvent(NS_NETWORK_DOWNLOAD_EVENT);
}
#endif // MOZ_B2G
} else if (aTypeAtom == nsGkAtoms::ontouchstart ||
aTypeAtom == nsGkAtoms::ontouchend ||
aTypeAtom == nsGkAtoms::ontouchmove ||
aTypeAtom == nsGkAtoms::ontouchenter ||
aTypeAtom == nsGkAtoms::ontouchleave ||
aTypeAtom == nsGkAtoms::ontouchcancel) {
mMayHaveTouchEventListener = true;
nsPIDOMWindow* window = GetInnerWindowForTarget();
// we don't want touchevent listeners added by scrollbars to flip this flag
// so we ignore listeners created with system event flag
if (window && !aFlags.mInSystemGroup) {
window->SetHasTouchEventListeners();
}
} else if (aType >= NS_POINTER_EVENT_START && aType <= NS_POINTER_LOST_CAPTURE) {
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (aTypeAtom == nsGkAtoms::onpointerenter ||
aTypeAtom == nsGkAtoms::onpointerleave) {
mMayHavePointerEnterLeaveEventListener = true;
if (window) {
#ifdef DEBUG
nsCOMPtr<nsIDocument> d = window->GetExtantDoc();
NS_WARN_IF_FALSE(!nsContentUtils::IsChromeDoc(d),
"Please do not use pointerenter/leave events in chrome. "
"They are slower than pointerover/out!");
#endif
window->SetHasPointerEnterLeaveEventListeners();
}
}
} else if (aTypeAtom == nsGkAtoms::onmouseenter ||
aTypeAtom == nsGkAtoms::onmouseleave) {
mMayHaveMouseEnterLeaveEventListener = true;
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (window) {
#ifdef DEBUG
nsCOMPtr<nsIDocument> d = window->GetExtantDoc();
NS_WARN_IF_FALSE(!nsContentUtils::IsChromeDoc(d),
"Please do not use mouseenter/leave events in chrome. "
"They are slower than mouseover/out!");
#endif
window->SetHasMouseEnterLeaveEventListeners();
}
#ifdef MOZ_GAMEPAD
} else if (aType >= NS_GAMEPAD_START &&
aType <= NS_GAMEPAD_END) {
nsPIDOMWindow* window = GetInnerWindowForTarget();
if (window) {
window->SetHasGamepadEventListener();
}
#endif
}
if (aTypeAtom && mTarget) {
mTarget->EventListenerAdded(aTypeAtom);
}
}
