dom/file/FileCreatorHelper.h
author Nicolas Silva <nsilva@mozilla.com>
Mon, 20 Aug 2018 15:23:54 +0200
changeset 432446 202fb9c610d07d734245e8b621eda8f80e3d2250
parent 345804 e769531b24333372cf6e28c6c495abb069136060
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1482109 - Hook the memory pressure observer up with WebRender. r=sotaro

/* -*- 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/. */

#ifndef mozilla_dom_FileCreatorHelper_h
#define mozilla_dom_FileCreatorHelper_h

#include "mozilla/Attributes.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/RefPtr.h"
#include "nsISupportsImpl.h"

// Undefine the macro of CreateFile to avoid FileCreatorHelper#CreateFile being
// replaced by FileCreatorHelper#CreateFileW.
#ifdef CreateFile
#undef CreateFile
#endif

class nsIFile;
class nsIGlobalObject;
class nsPIDOMWindowInner;

namespace mozilla {
namespace dom {

struct ChromeFilePropertyBag;
class Promise;
class File;

class FileCreatorHelper final
{
public:
  NS_INLINE_DECL_REFCOUNTING(FileCreatorHelper);

  static already_AddRefed<Promise>
  CreateFile(nsIGlobalObject* aGlobalObject,
             nsIFile* aFile,
             const ChromeFilePropertyBag& aBag,
             bool aIsFromNsIFile,
             ErrorResult& aRv);

  void
  ResponseReceived(BlobImpl* aBlobImpl, nsresult aRv);

  // For IPC only
  static nsresult
  CreateBlobImplForIPC(const nsAString& aPath,
                       const nsAString& aType,
                       const nsAString& aName,
                       bool aLastModifiedPassed,
                       int64_t aLastModified,
                       bool aExistenceCheck,
                       bool aIsFromNsIFile,
                       BlobImpl** aBlobImpl);

private:
  static already_AddRefed<File>
  CreateFileInternal(nsPIDOMWindowInner* aWindow,
                     nsIFile* aFile,
                     const ChromeFilePropertyBag& aBag,
                     bool aIsFromNsIFile,
                     ErrorResult& aRv);

  static nsresult
  CreateBlobImpl(nsIFile* aFile,
                 const nsAString& aType,
                 const nsAString& aName,
                 bool aLastModifiedPassed,
                 int64_t aLastModified,
                 bool aExistenceCheck,
                 bool aIsFromNsIFile,
                 BlobImpl** aBlobImpl);

  FileCreatorHelper(Promise* aPromise, nsPIDOMWindowInner* aWindow);
  ~FileCreatorHelper();

  void
  SendRequest(nsIFile* aFile, const ChromeFilePropertyBag& aBag,
              bool aIsFromNsIFile, ErrorResult& aRv);

  RefPtr<Promise> mPromise;
  nsCOMPtr<nsPIDOMWindowInner> mWindow;
};

} // dom namespace
} // mozilla namespace

#endif // mozilla_dom_FileCreatorHelper_h