gecko-dev/dom/datastore/DataStoreRevision.cpp

101 строка
2.5 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 "DataStoreRevision.h"
#include "DataStoreCallbacks.h"
#include "DataStoreService.h"
#include "mozilla/dom/DataStoreBinding.h"
#include "mozilla/dom/IDBObjectStore.h"
#include "mozilla/dom/IDBRequest.h"
#include "mozilla/dom/ToJSValue.h"
#include "nsIDOMEvent.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS(DataStoreRevision, nsIDOMEventListener)
// Note: this code in it must not assume anything about the compartment cx is
// in.
nsresult
DataStoreRevision::AddRevision(JSContext* aCx,
IDBObjectStore* aStore,
uint32_t aObjectId,
RevisionType aRevisionType,
DataStoreRevisionCallback* aCallback)
{
MOZ_ASSERT(aStore);
MOZ_ASSERT(aCallback);
RefPtr<DataStoreService> service = DataStoreService::Get();
if (!service) {
return NS_ERROR_FAILURE;
}
nsString id;
nsresult rv = service->GenerateUUID(mRevisionID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
DataStoreRevisionData data;
data.mRevisionId = mRevisionID;
data.mObjectId = aObjectId;
switch (aRevisionType) {
case RevisionVoid:
data.mOperation = NS_LITERAL_STRING("void");
break;
default:
MOZ_CRASH("This should not happen");
}
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, data, &value)) {
return NS_ERROR_FAILURE;
}
ErrorResult error;
mRequest = aStore->Put(aCx, value, JS::UndefinedHandleValue, error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
rv = mRequest->EventTarget::AddEventListener(NS_LITERAL_STRING("success"),
this, false);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mCallback = aCallback;
return NS_OK;
}
NS_IMETHODIMP
DataStoreRevision::HandleEvent(nsIDOMEvent* aEvent)
{
nsString type;
nsresult rv = aEvent->GetType(type);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (!type.EqualsASCII("success")) {
MOZ_CRASH("This should not happen");
}
mRequest->RemoveEventListener(NS_LITERAL_STRING("success"), this, false);
mRequest = nullptr;
mCallback->Run(mRevisionID);
return NS_OK;
}
} // namespace dom
} // namespace mozilla