/* -*- 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 "IDBFileRequest.h"

#include "IDBFileHandle.h"

#include "js/RootingAPI.h"

#include "jsapi.h"

#include "mozilla/Assertions.h"

#include "mozilla/dom/IDBFileRequestBinding.h"

#include "mozilla/dom/ProgressEvent.h"

#include "mozilla/dom/ScriptSettings.h"

#include "mozilla/EventDispatcher.h"

#include "nsCOMPtr.h"

#include "nsDebug.h"

#include "nsError.h"

#include "nsLiteralString.h"

namespace mozilla {

namespace dom {

using namespace mozilla::dom::indexedDB;

IDBFileRequest::IDBFileRequest(IDBFileHandle* aFileHandle,

                               bool aWrapAsDOMRequest)

  : DOMRequest(aFileHandle->GetOwner())

  , mFileHandle(aFileHandle)

  , mWrapAsDOMRequest(aWrapAsDOMRequest)

  , mHasEncoding(false)

{

  MOZ_ASSERT(aFileHandle);

  aFileHandle->AssertIsOnOwningThread();

}

IDBFileRequest::~IDBFileRequest()

{

  AssertIsOnOwningThread();

}

// static

already_AddRefed<IDBFileRequest>

IDBFileRequest::Create(IDBFileHandle* aFileHandle,

                       bool aWrapAsDOMRequest)

{

  MOZ_ASSERT(aFileHandle);

  aFileHandle->AssertIsOnOwningThread();

  RefPtr<IDBFileRequest> request =

    new IDBFileRequest(aFileHandle, aWrapAsDOMRequest);

  return request.forget();

}

void

IDBFileRequest::FireProgressEvent(uint64_t aLoaded, uint64_t aTotal)

{

  AssertIsOnOwningThread();

  if (NS_FAILED(CheckInnerWindowCorrectness())) {

    return;

  }

  ProgressEventInit init;

  init.mBubbles = false;

  init.mCancelable = false;

  init.mLengthComputable = false;

  init.mLoaded = aLoaded;

  init.mTotal = aTotal;

  RefPtr<ProgressEvent> event =

    ProgressEvent::Constructor(this, NS_LITERAL_STRING("progress"), init);

  DispatchTrustedEvent(event);

}

void

IDBFileRequest::SetResultCallback(ResultCallback* aCallback)

{

  AssertIsOnOwningThread();

  MOZ_ASSERT(aCallback);

  AutoJSAPI autoJS;

  if (NS_WARN_IF(!autoJS.Init(GetOwner()))) {

    FireError(NS_ERROR_DOM_FILEHANDLE_UNKNOWN_ERR);

    return;

  }

  JSContext* cx = autoJS.cx();

  JS::Rooted<JS::Value> result(cx);

  nsresult rv = aCallback->GetResult(cx, &result);

  if (NS_WARN_IF(NS_FAILED(rv))) {

    FireError(rv);

  } else {

    FireSuccess(result);

  }

}

NS_IMPL_ADDREF_INHERITED(IDBFileRequest, DOMRequest)

NS_IMPL_RELEASE_INHERITED(IDBFileRequest, DOMRequest)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBFileRequest)

NS_INTERFACE_MAP_END_INHERITING(DOMRequest)

NS_IMPL_CYCLE_COLLECTION_INHERITED(IDBFileRequest, DOMRequest,

                                   mFileHandle)

void

IDBFileRequest::GetEventTargetParent(EventChainPreVisitor& aVisitor)

{

  AssertIsOnOwningThread();

  aVisitor.mCanHandle = true;

  aVisitor.SetParentTarget(mFileHandle, false);

}

// virtual

JSObject*

IDBFileRequest::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)

{

  AssertIsOnOwningThread();

  if (mWrapAsDOMRequest) {

    return DOMRequest::WrapObject(aCx, aGivenProto);

  }

  return IDBFileRequest_Binding::Wrap(aCx, this, aGivenProto);

}

} // namespace dom

} // namespace mozilla