gecko-dev/dom/file/DOMFileHandle.cpp

78 строки
2.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "DOMFileHandle.h"
#include "nsIFileStreams.h"
#include "nsDOMClassInfoID.h"
#include "nsNetUtil.h"
#include "File.h"
#include "LockedFile.h"
USING_FILE_NAMESPACE
// static
already_AddRefed<DOMFileHandle>
DOMFileHandle::Create(nsPIDOMWindow* aWindow,
nsIFileStorage* aFileStorage,
nsIFile* aFile)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<DOMFileHandle> newFile(new DOMFileHandle);
newFile->BindToOwner(aWindow);
newFile->mFileStorage = aFileStorage;
nsresult rv = aFile->GetLeafName(newFile->mName);
NS_ENSURE_SUCCESS(rv, nullptr);
newFile->mFile = aFile;
newFile->mFileName = newFile->mName;
return newFile.forget();
}
already_AddRefed<nsISupports>
DOMFileHandle::CreateStream(nsIFile* aFile, bool aReadOnly)
{
nsresult rv;
if (aReadOnly) {
nsCOMPtr<nsIInputStream> stream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(stream), aFile, -1, -1,
nsIFileInputStream::DEFER_OPEN);
NS_ENSURE_SUCCESS(rv, nullptr);
return stream.forget();
}
nsCOMPtr<nsIFileStream> stream;
rv = NS_NewLocalFileStream(getter_AddRefs(stream), aFile, -1, -1,
nsIFileStream::DEFER_OPEN);
NS_ENSURE_SUCCESS(rv, nullptr);
return stream.forget();
}
already_AddRefed<nsIDOMFile>
DOMFileHandle::CreateFileObject(LockedFile* aLockedFile, uint32_t aFileSize)
{
nsCOMPtr<nsIDOMFile> file =
new File(mName, mType, aFileSize, mFile, aLockedFile);
return file.forget();
}
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMFileHandle)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DOMFileHandle)
NS_INTERFACE_MAP_END_INHERITING(FileHandle)
NS_IMPL_ADDREF_INHERITED(DOMFileHandle, FileHandle)
NS_IMPL_RELEASE_INHERITED(DOMFileHandle, FileHandle)
DOMCI_DATA(DOMFileHandle, DOMFileHandle)