gecko-dev/dom/events/CustomEvent.cpp

123 lines
3.6 KiB
C++

/* 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 "CustomEvent.h"
#include "mozilla/dom/CustomEventBinding.h"
#include "mozilla/dom/BindingUtils.h"
#include "nsContentUtils.h"
#include "nsIXPConnect.h"
using namespace mozilla;
using namespace mozilla::dom;
CustomEvent::CustomEvent(mozilla::dom::EventTarget* aOwner,
nsPresContext* aPresContext,
mozilla::WidgetEvent* aEvent)
: Event(aOwner, aPresContext, aEvent)
{
}
CustomEvent::~CustomEvent() {}
NS_IMPL_CYCLE_COLLECTION_CLASS(CustomEvent)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CustomEvent, Event)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDetail)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CustomEvent, Event)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDetail)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_ADDREF_INHERITED(CustomEvent, Event)
NS_IMPL_RELEASE_INHERITED(CustomEvent, Event)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(CustomEvent)
NS_INTERFACE_MAP_ENTRY(nsIDOMCustomEvent)
NS_INTERFACE_MAP_END_INHERITING(Event)
already_AddRefed<CustomEvent>
CustomEvent::Constructor(const GlobalObject& aGlobal,
const nsAString& aType,
const CustomEventInit& aParam,
ErrorResult& aRv)
{
nsCOMPtr<mozilla::dom::EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());
nsRefPtr<CustomEvent> e = new CustomEvent(t, nullptr, nullptr);
bool trusted = e->Init(t);
JS::Rooted<JS::Value> detail(aGlobal.Context(), aParam.mDetail);
e->InitCustomEvent(aGlobal.Context(), aType, aParam.mBubbles, aParam.mCancelable, detail, aRv);
e->SetTrusted(trusted);
return e.forget();
}
JSObject*
CustomEvent::WrapObject(JSContext* aCx)
{
return mozilla::dom::CustomEventBinding::Wrap(aCx, this);
}
NS_IMETHODIMP
CustomEvent::InitCustomEvent(const nsAString& aType,
bool aCanBubble,
bool aCancelable,
nsIVariant* aDetail)
{
nsresult rv = Event::InitEvent(aType, aCanBubble, aCancelable);
NS_ENSURE_SUCCESS(rv, rv);
mDetail = aDetail;
return NS_OK;
}
void
CustomEvent::InitCustomEvent(JSContext* aCx,
const nsAString& aType,
bool aCanBubble,
bool aCancelable,
JS::Handle<JS::Value> aDetail,
ErrorResult& aRv)
{
nsCOMPtr<nsIVariant> detail;
if (nsIXPConnect* xpc = nsContentUtils::XPConnect()) {
xpc->JSToVariant(aCx, aDetail, getter_AddRefs(detail));
}
if (!detail) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
aRv = InitCustomEvent(aType, aCanBubble, aCancelable, detail);
}
NS_IMETHODIMP
CustomEvent::GetDetail(nsIVariant** aDetail)
{
NS_IF_ADDREF(*aDetail = mDetail);
return NS_OK;
}
void
CustomEvent::GetDetail(JSContext* aCx,
JS::MutableHandle<JS::Value> aRetval)
{
if (!mDetail) {
aRetval.setNull();
return;
}
VariantToJsval(aCx, mDetail, aRetval);
}
nsresult
NS_NewDOMCustomEvent(nsIDOMEvent** aInstancePtrResult,
mozilla::dom::EventTarget* aOwner,
nsPresContext* aPresContext,
mozilla::WidgetEvent* aEvent)
{
CustomEvent* it = new CustomEvent(aOwner, aPresContext, aEvent);
NS_ADDREF(it);
*aInstancePtrResult = static_cast<Event*>(it);
return NS_OK;
}