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Diffstat (limited to '')
| -rw-r--r-- | dom/events/EventTarget.cpp | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/dom/events/EventTarget.cpp b/dom/events/EventTarget.cpp new file mode 100644 index 0000000000..c0c4809a5c --- /dev/null +++ b/dom/events/EventTarget.cpp @@ -0,0 +1,236 @@ +/* -*- 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 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#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 { + +/* 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::GetAsWindowInner() { + return IsInnerWindow() ? static_cast<nsGlobalWindowInner*>(this) : nullptr; +} + +const nsPIDOMWindowInner* EventTarget::GetAsWindowInner() const { + return IsInnerWindow() ? static_cast<const nsGlobalWindowInner*>(this) + : nullptr; +} + +nsPIDOMWindowOuter* EventTarget::GetAsWindowOuter() { + return IsOuterWindow() ? static_cast<nsGlobalWindowOuter*>(this) : nullptr; +} + +const nsPIDOMWindowOuter* EventTarget::GetAsWindowOuter() const { + return IsOuterWindow() ? static_cast<const nsGlobalWindowOuter*>(this) + : nullptr; +} + +nsPIDOMWindowInner* EventTarget::AsWindowInner() { + MOZ_DIAGNOSTIC_ASSERT(IsInnerWindow()); + return static_cast<nsGlobalWindowInner*>(this); +} + +const nsPIDOMWindowInner* EventTarget::AsWindowInner() const { + MOZ_DIAGNOSTIC_ASSERT(IsInnerWindow()); + return static_cast<const nsGlobalWindowInner*>(this); +} + +nsPIDOMWindowOuter* EventTarget::AsWindowOuter() { + MOZ_DIAGNOSTIC_ASSERT(IsOuterWindow()); + return static_cast<nsGlobalWindowOuter*>(this); +} + +const nsPIDOMWindowOuter* EventTarget::AsWindowOuter() const { + MOZ_DIAGNOSTIC_ASSERT(IsOuterWindow()); + return static_cast<const nsGlobalWindowOuter*>(this); +} + +} // namespace mozilla::dom |