gecko-dev/dom/events/DataContainerEvent.cpp

114 строки
3.2 KiB
C++

/* -*- 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/dom/DataContainerEvent.h"
#include "nsContentUtils.h"
#include "nsIDocument.h"
#include "nsIXPConnect.h"
namespace mozilla {
namespace dom {
DataContainerEvent::DataContainerEvent(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetEvent* aEvent)
: Event(aOwner, aPresContext, aEvent)
{
nsCOMPtr<nsPIDOMWindow> win = do_QueryInterface(mOwner);
if (win) {
if (nsIDocument* doc = win->GetExtantDoc()) {
doc->WarnOnceAbout(nsIDocument::eDataContainerEvent);
}
}
}
NS_IMPL_CYCLE_COLLECTION_CLASS(DataContainerEvent)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(DataContainerEvent, Event)
tmp->mData.Clear();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(DataContainerEvent, Event)
tmp->mData.EnumerateRead(TraverseEntry, &cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_ADDREF_INHERITED(DataContainerEvent, Event)
NS_IMPL_RELEASE_INHERITED(DataContainerEvent, Event)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DataContainerEvent)
NS_INTERFACE_MAP_ENTRY(nsIDOMDataContainerEvent)
NS_INTERFACE_MAP_END_INHERITING(Event)
NS_IMETHODIMP
DataContainerEvent::GetData(const nsAString& aKey, nsIVariant** aData)
{
NS_ENSURE_ARG_POINTER(aData);
mData.Get(aKey, aData);
return NS_OK;
}
NS_IMETHODIMP
DataContainerEvent::SetData(const nsAString& aKey, nsIVariant* aData)
{
NS_ENSURE_ARG(aData);
// Make sure this event isn't already being dispatched.
NS_ENSURE_STATE(!mEvent->mFlags.mIsBeingDispatched);
mData.Put(aKey, aData);
return NS_OK;
}
void
DataContainerEvent::SetData(JSContext* aCx, const nsAString& aKey,
JS::Handle<JS::Value> aVal,
ErrorResult& aRv)
{
if (!nsContentUtils::XPConnect()) {
aRv = NS_ERROR_FAILURE;
return;
}
nsCOMPtr<nsIVariant> val;
nsresult rv =
nsContentUtils::XPConnect()->JSToVariant(aCx, aVal, getter_AddRefs(val));
if (NS_FAILED(rv)) {
aRv = rv;
return;
}
aRv = SetData(aKey, val);
}
PLDHashOperator
DataContainerEvent::TraverseEntry(const nsAString& aKey,
nsIVariant* aDataItem,
void* aUserArg)
{
nsCycleCollectionTraversalCallback *cb =
static_cast<nsCycleCollectionTraversalCallback*>(aUserArg);
cb->NoteXPCOMChild(aDataItem);
return PL_DHASH_NEXT;
}
} // namespace dom
} // namespace mozilla
using namespace mozilla;
using namespace mozilla::dom;
nsresult
NS_NewDOMDataContainerEvent(nsIDOMEvent** aInstancePtrResult,
EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetEvent* aEvent)
{
DataContainerEvent* it = new DataContainerEvent(aOwner, aPresContext, aEvent);
NS_ADDREF(it);
*aInstancePtrResult = static_cast<Event*>(it);
return NS_OK;
}