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a47006fa39
DOM's initEvent says that it must do nothing during dispatch. UI Events says they behave the same as initEvent, so the legacy initializers defined there also shouldn't do anything during dispatch. Previously we only did this for initEvent itself, but other legacy initializers would function normally during dispatch. Edge passes the wpt test that's updated in this commit. Chrome passes all but initCustomEvent. It would be nice to expand the test to have coverage for all our legacy initializers, but the likelihood of real-world compat issues from this behavior is slim enough that I didn't think it was worth the effort. MozReview-Commit-ID: IYLOuwlPGSj
150 lines
4.3 KiB
C++
150 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CustomEvent.h"
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#include "mozilla/dom/CustomEventBinding.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "nsContentUtils.h"
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#include "nsIXPConnect.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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CustomEvent::CustomEvent(mozilla::dom::EventTarget* aOwner,
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nsPresContext* aPresContext,
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mozilla::WidgetEvent* aEvent)
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: Event(aOwner, aPresContext, aEvent)
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, mDetail(JS::NullValue())
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{
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mozilla::HoldJSObjects(this);
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}
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CustomEvent::~CustomEvent()
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{
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mozilla::DropJSObjects(this);
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(CustomEvent)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CustomEvent, Event)
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tmp->mDetail.setUndefined();
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mozilla::DropJSObjects(this);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CustomEvent, Event)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(CustomEvent, Event)
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_IMPL_ADDREF_INHERITED(CustomEvent, Event)
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NS_IMPL_RELEASE_INHERITED(CustomEvent, Event)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(CustomEvent)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCustomEvent)
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NS_INTERFACE_MAP_END_INHERITING(Event)
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already_AddRefed<CustomEvent>
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CustomEvent::Constructor(const GlobalObject& aGlobal,
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const nsAString& aType,
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const CustomEventInit& aParam,
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ErrorResult& aRv)
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{
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nsCOMPtr<mozilla::dom::EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
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RefPtr<CustomEvent> e = new CustomEvent(t, nullptr, nullptr);
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bool trusted = e->Init(t);
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JS::Rooted<JS::Value> detail(aGlobal.Context(), aParam.mDetail);
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e->InitCustomEvent(aGlobal.Context(), aType, aParam.mBubbles, aParam.mCancelable, detail, aRv);
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e->SetTrusted(trusted);
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e->SetComposed(aParam.mComposed);
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return e.forget();
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}
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JSObject*
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CustomEvent::WrapObjectInternal(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return mozilla::dom::CustomEventBinding::Wrap(aCx, this, aGivenProto);
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}
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NS_IMETHODIMP
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CustomEvent::InitCustomEvent(const nsAString& aType,
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bool aCanBubble,
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bool aCancelable,
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nsIVariant* aDetail)
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{
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NS_ENSURE_TRUE(!mEvent->mFlags.mIsBeingDispatched, NS_OK);
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AutoJSAPI jsapi;
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NS_ENSURE_STATE(jsapi.Init(GetParentObject()));
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JSContext* cx = jsapi.cx();
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JS::Rooted<JS::Value> detail(cx);
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if (!aDetail) {
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detail = JS::NullValue();
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} else if (NS_WARN_IF(!VariantToJsval(cx, aDetail, &detail))) {
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JS_ClearPendingException(cx);
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return NS_ERROR_FAILURE;
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}
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Event::InitEvent(aType, aCanBubble, aCancelable);
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mDetail = detail;
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return NS_OK;
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}
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void
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CustomEvent::InitCustomEvent(JSContext* aCx,
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const nsAString& aType,
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bool aCanBubble,
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bool aCancelable,
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JS::Handle<JS::Value> aDetail,
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ErrorResult& aRv)
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{
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NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
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Event::InitEvent(aType, aCanBubble, aCancelable);
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mDetail = aDetail;
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}
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NS_IMETHODIMP
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CustomEvent::GetDetail(nsIVariant** aDetail)
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{
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if (mDetail.isNull()) {
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*aDetail = nullptr;
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return NS_OK;
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}
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AutoJSAPI jsapi;
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NS_ENSURE_STATE(jsapi.Init(GetParentObject()));
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JSContext* cx = jsapi.cx();
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JS::Rooted<JS::Value> detail(cx, mDetail);
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nsIXPConnect* xpc = nsContentUtils::XPConnect();
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if (NS_WARN_IF(!xpc)) {
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return NS_ERROR_FAILURE;
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}
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return xpc->JSToVariant(cx, detail, aDetail);
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}
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void
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CustomEvent::GetDetail(JSContext* aCx,
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JS::MutableHandle<JS::Value> aRetval)
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{
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aRetval.set(mDetail);
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}
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already_AddRefed<CustomEvent>
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NS_NewDOMCustomEvent(EventTarget* aOwner,
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nsPresContext* aPresContext,
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mozilla::WidgetEvent* aEvent)
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{
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RefPtr<CustomEvent> it =
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new CustomEvent(aOwner, aPresContext, aEvent);
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return it.forget();
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}
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