dom/file/FileBlobImpl.h
author Nicolas Silva <nsilva@mozilla.com>
Mon, 20 Aug 2018 15:23:54 +0200
changeset 432446 202fb9c610d07d734245e8b621eda8f80e3d2250
parent 403548 91d647c847e56cb0db2be19647507cec207b1d08
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_FileBlobImpl_h
#define mozilla_dom_FileBlobImpl_h

#include "mozilla/dom/BaseBlobImpl.h"

class nsIFile;

namespace mozilla {
namespace dom {

class FileBlobImpl : public BaseBlobImpl
{
public:
  NS_INLINE_DECL_REFCOUNTING_INHERITED(FileBlobImpl, BaseBlobImpl)

  // Create as a file
  explicit FileBlobImpl(nsIFile* aFile);

  // Create as a file
  FileBlobImpl(const nsAString& aName, const nsAString& aContentType,
               uint64_t aLength, nsIFile* aFile);

  FileBlobImpl(const nsAString& aName, const nsAString& aContentType,
               uint64_t aLength, nsIFile* aFile,
               int64_t aLastModificationDate);

  // Create as a file with custom name
  FileBlobImpl(nsIFile* aFile, const nsAString& aName,
               const nsAString& aContentType);

  // Overrides
  virtual uint64_t GetSize(ErrorResult& aRv) override;
  virtual void GetType(nsAString& aType) override;
  virtual int64_t GetLastModified(ErrorResult& aRv) override;
  virtual void SetLastModified(int64_t aLastModified) override;
  virtual void GetMozFullPathInternal(nsAString& aFullPath,
                                      ErrorResult& aRv) const override;
  virtual void CreateInputStream(nsIInputStream** aInputStream,
                                 ErrorResult& aRv) override;

  virtual bool IsDirectory() const override;

  // We always have size and date for this kind of blob.
  virtual bool IsSizeUnknown() const override { return false; }
  virtual bool IsDateUnknown() const override { return false; }

  void SetName(const nsAString& aName)
  {
    mName = aName;
  }

  void SetType(const nsAString& aType)
  {
    mContentType = aType;
  }

  int64_t GetFileId() override
  {
    return mFileId;
  }

  void SetFileId(int64_t aFileId)
  {
    mFileId = aFileId;
  }

protected:
  virtual ~FileBlobImpl() = default;

  // Create slice
  FileBlobImpl(const FileBlobImpl* aOther, uint64_t aStart,
               uint64_t aLength, const nsAString& aContentType);

  virtual already_AddRefed<BlobImpl>
  CreateSlice(uint64_t aStart, uint64_t aLength,
              const nsAString& aContentType, ErrorResult& aRv) override;

  nsCOMPtr<nsIFile> mFile;
  bool mWholeFile;
  int64_t mFileId;
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_FileBlobImpl_h