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/* -*- 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 "IDBFileHandle.h"
#include "IDBEvents.h"
#include "IDBMutableFile.h"
#include "mozilla/Assertions.h"
#include "mozilla/dom/IDBFileHandleBinding.h"
#include "mozilla/dom/filehandle/ActorsChild.h"
#include "mozilla/EventDispatcher.h"
#include "nsContentUtils.h"
#include "nsQueryObject.h"
#include "nsServiceManagerUtils.h"
#include "nsWidgetsCID.h"
namespace mozilla {
namespace dom {
using namespace mozilla::dom::indexedDB;
IDBFileHandle::IDBFileHandle(FileMode aMode,
IDBMutableFile* aMutableFile)
: FileHandleBase(DEBUGONLY(aMutableFile->OwningThread(),)
aMode)
, mMutableFile(aMutableFile)
{
AssertIsOnOwningThread();
}
IDBFileHandle::~IDBFileHandle()
{
AssertIsOnOwningThread();
mMutableFile->UnregisterFileHandle(this);
}
// static
already_AddRefed<IDBFileHandle>
IDBFileHandle::Create(IDBMutableFile* aMutableFile,
FileMode aMode)
{
MOZ_ASSERT(aMutableFile);
aMutableFile->AssertIsOnOwningThread();
MOZ_ASSERT(aMode == FileMode::Readonly || aMode == FileMode::Readwrite);
RefPtr<IDBFileHandle> fileHandle =
new IDBFileHandle(aMode, aMutableFile);
fileHandle->BindToOwner(aMutableFile);
// XXX Fix!
MOZ_ASSERT(NS_IsMainThread(), "This won't work on non-main threads!");
nsCOMPtr<nsIRunnable> runnable = do_QueryObject(fileHandle);
nsContentUtils::RunInMetastableState(runnable.forget());
fileHandle->SetCreating();
aMutableFile->RegisterFileHandle(fileHandle);
return fileHandle.forget();
}
already_AddRefed<IDBFileRequest>
IDBFileHandle::GetMetadata(const IDBFileMetadataParameters& aParameters,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
// Common state checking
if (!CheckState(aRv)) {
return nullptr;
}
// Argument checking for get metadata.
if (!aParameters.mSize && !aParameters.mLastModified) {
aRv.ThrowTypeError<MSG_METADATA_NOT_CONFIGURED>();
return nullptr;
}
// Do nothing if the window is closed
if (!CheckWindow()) {
return nullptr;
}
FileRequestGetMetadataParams params;
params.size() = aParameters.mSize;
params.lastModified() = aParameters.mLastModified;
RefPtr<FileRequestBase> fileRequest = GenerateFileRequest();
StartRequest(fileRequest, params);
return fileRequest.forget().downcast<IDBFileRequest>();
}
NS_IMPL_ADDREF_INHERITED(IDBFileHandle, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(IDBFileHandle, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBFileHandle)
NS_INTERFACE_MAP_ENTRY(nsIRunnable)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBFileHandle)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBFileHandle,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMutableFile)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBFileHandle,
DOMEventTargetHelper)
// Don't unlink mMutableFile!
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMETHODIMP
IDBFileHandle::Run()
{
AssertIsOnOwningThread();
OnReturnToEventLoop();
return NS_OK;
}
nsresult
IDBFileHandle::GetEventTargetParent(EventChainPreVisitor& aVisitor)
{
AssertIsOnOwningThread();
aVisitor.mCanHandle = true;
aVisitor.SetParentTarget(mMutableFile, false);
return NS_OK;
}
// virtual
JSObject*
IDBFileHandle::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
AssertIsOnOwningThread();
return IDBFileHandleBinding::Wrap(aCx, this, aGivenProto);
}
mozilla::dom::MutableFileBase*
IDBFileHandle::MutableFile() const
{
AssertIsOnOwningThread();
return mMutableFile;
}
void
IDBFileHandle::HandleCompleteOrAbort(bool aAborted)
{
AssertIsOnOwningThread();
FileHandleBase::HandleCompleteOrAbort(aAborted);
nsCOMPtr<nsIDOMEvent> event;
if (aAborted) {
event = CreateGenericEvent(this, nsDependentString(kAbortEventType),
eDoesBubble, eNotCancelable);
} else {
event = CreateGenericEvent(this, nsDependentString(kCompleteEventType),
eDoesNotBubble, eNotCancelable);
}
if (NS_WARN_IF(!event)) {
return;
}
bool dummy;
if (NS_FAILED(DispatchEvent(event, &dummy))) {
NS_WARNING("DispatchEvent failed!");
}
}
bool
IDBFileHandle::CheckWindow()
{
AssertIsOnOwningThread();
return GetOwner();
}
already_AddRefed<mozilla::dom::FileRequestBase>
IDBFileHandle::GenerateFileRequest()
{
AssertIsOnOwningThread();
return IDBFileRequest::Create(GetOwner(), this,
/* aWrapAsDOMRequest */ false);
}
} // namespace dom
} // namespace mozilla
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