michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/dom/MessageEvent.h"
michael@0: #include "mozilla/dom/MessageEventBinding.h"
michael@0: #include "mozilla/dom/MessagePort.h"
michael@0: #include "mozilla/dom/MessagePortBinding.h"
michael@0: #include "mozilla/dom/MessagePortList.h"
michael@0: #include "mozilla/dom/UnionTypes.h"
michael@0: 
michael@0: #include "mozilla/HoldDropJSObjects.h"
michael@0: #include "jsapi.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_CLASS(MessageEvent)
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(MessageEvent, Event)
michael@0:   tmp->mData = JSVAL_VOID;
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindowSource)
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK(mPortSource)
michael@0:   NS_IMPL_CYCLE_COLLECTION_UNLINK(mPorts)
michael@0: NS_IMPL_CYCLE_COLLECTION_UNLINK_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(MessageEvent, Event)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindowSource)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPortSource)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPorts)
michael@0: NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(MessageEvent, Event)
michael@0:   NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mData)
michael@0: NS_IMPL_CYCLE_COLLECTION_TRACE_END
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(MessageEvent)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIDOMMessageEvent)
michael@0: NS_INTERFACE_MAP_END_INHERITING(Event)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(MessageEvent, Event)
michael@0: NS_IMPL_RELEASE_INHERITED(MessageEvent, Event)
michael@0: 
michael@0: MessageEvent::MessageEvent(EventTarget* aOwner,
michael@0:                            nsPresContext* aPresContext,
michael@0:                            WidgetEvent* aEvent)
michael@0:   : Event(aOwner, aPresContext, aEvent)
michael@0:   , mData(JSVAL_VOID)
michael@0: {
michael@0: }
michael@0: 
michael@0: MessageEvent::~MessageEvent()
michael@0: {
michael@0:   mData = JSVAL_VOID;
michael@0:   DropJSObjects(this);
michael@0: }
michael@0: 
michael@0: JSObject*
michael@0: MessageEvent::WrapObject(JSContext* aCx)
michael@0: {
michael@0:   return mozilla::dom::MessageEventBinding::Wrap(aCx, this);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: MessageEvent::GetData(JSContext* aCx, JS::MutableHandle<JS::Value> aData)
michael@0: {
michael@0:   ErrorResult rv;
michael@0:   GetData(aCx, aData, rv);
michael@0:   return rv.ErrorCode();
michael@0: }
michael@0: 
michael@0: void
michael@0: MessageEvent::GetData(JSContext* aCx, JS::MutableHandle<JS::Value> aData,
michael@0:                       ErrorResult& aRv)
michael@0: {
michael@0:   JS::ExposeValueToActiveJS(mData);
michael@0:   aData.set(mData);
michael@0:   if (!JS_WrapValue(aCx, aData)) {
michael@0:     aRv.Throw(NS_ERROR_FAILURE);
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: MessageEvent::GetOrigin(nsAString& aOrigin)
michael@0: {
michael@0:   aOrigin = mOrigin;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: MessageEvent::GetLastEventId(nsAString& aLastEventId)
michael@0: {
michael@0:   aLastEventId = mLastEventId;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: MessageEvent::GetSource(nsIDOMWindow** aSource)
michael@0: {
michael@0:   NS_IF_ADDREF(*aSource = mWindowSource);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: MessageEvent::GetSource(Nullable<OwningWindowProxyOrMessagePort>& aValue) const
michael@0: {
michael@0:   if (mWindowSource) {
michael@0:     aValue.SetValue().SetAsWindowProxy() = mWindowSource;
michael@0:   } else if (mPortSource) {
michael@0:     aValue.SetValue().SetAsMessagePort() = mPortSource;
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* static */ already_AddRefed<MessageEvent>
michael@0: MessageEvent::Constructor(const GlobalObject& aGlobal,
michael@0:                           JSContext* aCx, const nsAString& aType,
michael@0:                           const MessageEventInit& aParam,
michael@0:                           ErrorResult& aRv)
michael@0: {
michael@0:   nsCOMPtr<EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
michael@0:   nsRefPtr<MessageEvent> event = new MessageEvent(t, nullptr, nullptr);
michael@0: 
michael@0:   aRv = event->InitEvent(aType, aParam.mBubbles, aParam.mCancelable);
michael@0:   if (aRv.Failed()) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   bool trusted = event->Init(t);
michael@0:   event->SetTrusted(trusted);
michael@0: 
michael@0:   event->mData = aParam.mData;
michael@0: 
michael@0:   mozilla::HoldJSObjects(event.get());
michael@0: 
michael@0:   if (aParam.mOrigin.WasPassed()) {
michael@0:     event->mOrigin = aParam.mOrigin.Value();
michael@0:   }
michael@0: 
michael@0:   if (aParam.mLastEventId.WasPassed()) {
michael@0:     event->mLastEventId = aParam.mLastEventId.Value();
michael@0:   }
michael@0: 
michael@0:   if (!aParam.mSource.IsNull()) {
michael@0:     if (aParam.mSource.Value().IsWindowProxy()) {
michael@0:       event->mWindowSource = aParam.mSource.Value().GetAsWindowProxy();
michael@0:     } else {
michael@0:       event->mPortSource = aParam.mSource.Value().GetAsMessagePort();
michael@0:     }
michael@0: 
michael@0:     MOZ_ASSERT(event->mWindowSource || event->mPortSource);
michael@0:   }
michael@0: 
michael@0:   if (aParam.mPorts.WasPassed() && !aParam.mPorts.Value().IsNull()) {
michael@0:     nsTArray<nsRefPtr<MessagePortBase>> ports;
michael@0:     for (uint32_t i = 0, len = aParam.mPorts.Value().Value().Length(); i < len; ++i) {
michael@0:       ports.AppendElement(aParam.mPorts.Value().Value()[i].get());
michael@0:     }
michael@0: 
michael@0:     event->mPorts = new MessagePortList(static_cast<EventBase*>(event), ports);
michael@0:   }
michael@0: 
michael@0:   return event.forget();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: MessageEvent::InitMessageEvent(const nsAString& aType,
michael@0:                                bool aCanBubble,
michael@0:                                bool aCancelable,
michael@0:                                JS::Handle<JS::Value> aData,
michael@0:                                const nsAString& aOrigin,
michael@0:                                const nsAString& aLastEventId,
michael@0:                                nsIDOMWindow* aSource)
michael@0: {
michael@0:   nsresult rv = Event::InitEvent(aType, aCanBubble, aCancelable);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   mData = aData;
michael@0:   mozilla::HoldJSObjects(this);
michael@0:   mOrigin = aOrigin;
michael@0:   mLastEventId = aLastEventId;
michael@0:   mWindowSource = aSource;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: MessageEvent::SetPorts(MessagePortList* aPorts)
michael@0: {
michael@0:   MOZ_ASSERT(!mPorts && aPorts);
michael@0:   mPorts = aPorts;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: nsresult
michael@0: NS_NewDOMMessageEvent(nsIDOMEvent** aInstancePtrResult,
michael@0:                       EventTarget* aOwner,
michael@0:                       nsPresContext* aPresContext,
michael@0:                       WidgetEvent* aEvent) 
michael@0: {
michael@0:   MessageEvent* it = new MessageEvent(aOwner, aPresContext, aEvent);
michael@0:   NS_ADDREF(it);
michael@0:   *aInstancePtrResult = static_cast<Event*>(it);
michael@0:   return NS_OK;
michael@0: }