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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#include "mozilla/EventListenerManager.h"
#include "mozilla/dom/EventTarget.h"
#include "mozilla/dom/EventTargetBinding.h"
#include "mozilla/dom/ConstructibleEventTarget.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/WindowProxyHolder.h"
#include "nsGlobalWindowInner.h"
#include "nsGlobalWindowOuter.h"
#include "nsIGlobalObject.h"
#include "nsPIDOMWindow.h"
#include "nsThreadUtils.h"
namespace mozilla::dom {
#ifndef NS_BUILD_REFCNT_LOGGING
MozExternalRefCountType EventTarget::NonVirtualAddRef() {
return mRefCnt.incr(this);
}
MozExternalRefCountType EventTarget::NonVirtualRelease() {
if (mRefCnt.get() == 1) {
return Release();
}
return mRefCnt.decr(this);
}
#endif
NS_IMETHODIMP_(MozExternalRefCountType) EventTarget::AddRef() {
MOZ_ASSERT_UNREACHABLE("EventTarget::AddRef should not be called");
return 0;
}
NS_IMETHODIMP_(MozExternalRefCountType) EventTarget::Release() {
MOZ_ASSERT_UNREACHABLE("EventTarget::Release should not be called");
return 0;
}
NS_IMETHODIMP EventTarget::QueryInterface(REFNSIID aIID, void** aInstancePtr) {
MOZ_ASSERT_UNREACHABLE("EventTarget::QueryInterface should not be called");
*aInstancePtr = nullptr;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP_(void) EventTarget::DeleteCycleCollectable() {
MOZ_ASSERT_UNREACHABLE(
"EventTarget::DeleteCycleCollectable should not be called");
}
/* static */
already_AddRefed<EventTarget> EventTarget::Constructor(
const GlobalObject& aGlobal, ErrorResult& aRv) {
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
if (!global) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
RefPtr<EventTarget> target = new ConstructibleEventTarget(global);
return target.forget();
}
bool EventTarget::ComputeWantsUntrusted(
const Nullable<bool>& aWantsUntrusted,
const AddEventListenerOptionsOrBoolean* aOptions, ErrorResult& aRv) {
if (aOptions && aOptions->IsAddEventListenerOptions()) {
const auto& options = aOptions->GetAsAddEventListenerOptions();
if (options.mWantUntrusted.WasPassed()) {
return options.mWantUntrusted.Value();
}
}
if (!aWantsUntrusted.IsNull()) {
return aWantsUntrusted.Value();
}
bool defaultWantsUntrusted = ComputeDefaultWantsUntrusted(aRv);
if (aRv.Failed()) {
return false;
}
return defaultWantsUntrusted;
}
void EventTarget::AddEventListener(
const nsAString& aType, EventListener* aCallback,
const AddEventListenerOptionsOrBoolean& aOptions,
const Nullable<bool>& aWantsUntrusted, ErrorResult& aRv) {
bool wantsUntrusted = ComputeWantsUntrusted(aWantsUntrusted, &aOptions, aRv);
if (aRv.Failed()) {
return;
}
EventListenerManager* elm = GetOrCreateListenerManager();
if (!elm) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return;
}
elm->AddEventListener(aType, aCallback, aOptions, wantsUntrusted);
}
nsresult EventTarget::AddEventListener(const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture,
const Nullable<bool>& aWantsUntrusted) {
ErrorResult rv;
bool wantsUntrusted = ComputeWantsUntrusted(aWantsUntrusted, nullptr, rv);
if (rv.Failed()) {
return rv.StealNSResult();
}
EventListenerManager* elm = GetOrCreateListenerManager();
NS_ENSURE_STATE(elm);
elm->AddEventListener(aType, aListener, aUseCapture, wantsUntrusted);
return NS_OK;
}
void EventTarget::RemoveEventListener(
const nsAString& aType, EventListener* aListener,
const EventListenerOptionsOrBoolean& aOptions, ErrorResult& aRv) {
EventListenerManager* elm = GetExistingListenerManager();
if (elm) {
elm->RemoveEventListener(aType, aListener, aOptions);
}
}
void EventTarget::RemoveEventListener(const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture) {
EventListenerManager* elm = GetExistingListenerManager();
if (elm) {
elm->RemoveEventListener(aType, aListener, aUseCapture);
}
}
nsresult EventTarget::AddSystemEventListener(
const nsAString& aType, nsIDOMEventListener* aListener, bool aUseCapture,
const Nullable<bool>& aWantsUntrusted) {
ErrorResult rv;
bool wantsUntrusted = ComputeWantsUntrusted(aWantsUntrusted, nullptr, rv);
if (rv.Failed()) {
return rv.StealNSResult();
}
EventListenerManager* elm = GetOrCreateListenerManager();
NS_ENSURE_STATE(elm);
EventListenerFlags flags;
flags.mInSystemGroup = true;
flags.mCapture = aUseCapture;
flags.mAllowUntrustedEvents = wantsUntrusted;
elm->AddEventListenerByType(aListener, aType, flags);
return NS_OK;
}
void EventTarget::RemoveSystemEventListener(const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture) {
EventListenerManager* elm = GetExistingListenerManager();
if (elm) {
EventListenerFlags flags;
flags.mInSystemGroup = true;
flags.mCapture = aUseCapture;
elm->RemoveEventListenerByType(aListener, aType, flags);
}
}
EventHandlerNonNull* EventTarget::GetEventHandler(nsAtom* aType) {
EventListenerManager* elm = GetExistingListenerManager();
return elm ? elm->GetEventHandler(aType) : nullptr;
}
void EventTarget::SetEventHandler(const nsAString& aType,
EventHandlerNonNull* aHandler,
ErrorResult& aRv) {
if (!StringBeginsWith(aType, u"on"_ns)) {
aRv.Throw(NS_ERROR_INVALID_ARG);
return;
}
RefPtr<nsAtom> type = NS_Atomize(aType);
SetEventHandler(type, aHandler);
}
void EventTarget::SetEventHandler(nsAtom* aType,
EventHandlerNonNull* aHandler) {
GetOrCreateListenerManager()->SetEventHandler(aType, aHandler);
}
bool EventTarget::HasNonSystemGroupListenersForUntrustedKeyEvents() const {
EventListenerManager* elm = GetExistingListenerManager();
return elm && elm->HasNonSystemGroupListenersForUntrustedKeyEvents();
}
bool EventTarget::HasNonPassiveNonSystemGroupListenersForUntrustedKeyEvents()
const {
EventListenerManager* elm = GetExistingListenerManager();
return elm &&
elm->HasNonPassiveNonSystemGroupListenersForUntrustedKeyEvents();
}
bool EventTarget::IsApzAware() const {
EventListenerManager* elm = GetExistingListenerManager();
return elm && elm->HasApzAwareListeners();
}
void EventTarget::DispatchEvent(Event& aEvent) {
// The caller type doesn't really matter if we don't care about the
// return value, but let's be safe and pass NonSystem.
Unused << DispatchEvent(aEvent, CallerType::NonSystem, IgnoreErrors());
}
void EventTarget::DispatchEvent(Event& aEvent, ErrorResult& aRv) {
// The caller type doesn't really matter if we don't care about the
// return value, but let's be safe and pass NonSystem.
Unused << DispatchEvent(aEvent, CallerType::NonSystem, IgnoreErrors());
}
Nullable<WindowProxyHolder> EventTarget::GetOwnerGlobalForBindings() {
nsPIDOMWindowOuter* win = GetOwnerGlobalForBindingsInternal();
if (!win) {
return nullptr;
}
return WindowProxyHolder(win->GetBrowsingContext());
}
nsPIDOMWindowInner* EventTarget::GetAsInnerWindow() {
return IsInnerWindow() ? static_cast<nsGlobalWindowInner*>(this) : nullptr;
}
const nsPIDOMWindowInner* EventTarget::GetAsInnerWindow() const {
return IsInnerWindow() ? static_cast<const nsGlobalWindowInner*>(this)
: nullptr;
}
nsPIDOMWindowOuter* EventTarget::GetAsOuterWindow() {
return IsOuterWindow() ? static_cast<nsGlobalWindowOuter*>(this) : nullptr;
}
const nsPIDOMWindowOuter* EventTarget::GetAsOuterWindow() const {
return IsOuterWindow() ? static_cast<const nsGlobalWindowOuter*>(this)
: nullptr;
}
nsPIDOMWindowInner* EventTarget::AsInnerWindow() {
MOZ_DIAGNOSTIC_ASSERT(IsInnerWindow());
return static_cast<nsGlobalWindowInner*>(this);
}
const nsPIDOMWindowInner* EventTarget::AsInnerWindow() const {
MOZ_DIAGNOSTIC_ASSERT(IsInnerWindow());
return static_cast<const nsGlobalWindowInner*>(this);
}
nsPIDOMWindowOuter* EventTarget::AsOuterWindow() {
MOZ_DIAGNOSTIC_ASSERT(IsOuterWindow());
return static_cast<nsGlobalWindowOuter*>(this);
}
const nsPIDOMWindowOuter* EventTarget::AsOuterWindow() const {
MOZ_DIAGNOSTIC_ASSERT(IsOuterWindow());
return static_cast<const nsGlobalWindowOuter*>(this);
}
} // namespace mozilla::dom