dom/file/StreamBlobImpl.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_StreamBlobImpl_h
   8 #define mozilla_dom_StreamBlobImpl_h
   9
  10 #include "BaseBlobImpl.h"
  11 #include "nsIMemoryReporter.h"
  12
  13 namespace mozilla {
  14 namespace dom {
  15
  16 class StreamBlobImpl final : public BaseBlobImpl, public nsIMemoryReporter {
  17   MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf)
  18
  19  public:
  20   NS_DECL_ISUPPORTS_INHERITED
  21   NS_DECL_NSIMEMORYREPORTER
  22
  23   // Blob constructor.
  24   static already_AddRefed<StreamBlobImpl> Create(
  25       already_AddRefed<nsIInputStream> aInputStream,
  26       const nsAString& aContentType, uint64_t aLength,
  27       const nsAString& aBlobImplType);
  28
  29   // File constructor.
  30   static already_AddRefed<StreamBlobImpl> Create(
  31       already_AddRefed<nsIInputStream> aInputStream, const nsAString& aName,
  32       const nsAString& aContentType, int64_t aLastModifiedDate,
  33       uint64_t aLength, const nsAString& aBlobImplType);
  34
  35   void CreateInputStream(nsIInputStream** aStream, ErrorResult& aRv) override;
  36
  37   already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart, uint64_t aLength,
  38                                          const nsAString& aContentType,
  39                                          ErrorResult& aRv) override;
  40
  41   bool IsMemoryFile() const override { return true; }
  42
  43   int64_t GetFileId() override { return mFileId; }
  44
  45   void SetFileId(int64_t aFileId) { mFileId = aFileId; }
  46
  47   void SetFullPath(const nsAString& aFullPath) { mFullPath = aFullPath; }
  48
  49   void GetMozFullPathInternal(nsAString& aFullPath, ErrorResult& aRv) override {
  50     aFullPath = mFullPath;
  51   }
  52
  53   void SetIsDirectory(bool aIsDirectory) { mIsDirectory = aIsDirectory; }
  54
  55   bool IsDirectory() const override { return mIsDirectory; }
  56
  57   size_t GetAllocationSize() const override;
  58
  59   size_t GetAllocationSize(
  60       FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const override {
  61     return GetAllocationSize();
  62   }
  63
  64   void GetBlobImplType(nsAString& aBlobImplType) const override;
  65
  66  private:
  67   // Blob constructor.
  68   StreamBlobImpl(already_AddRefed<nsIInputStream> aInputStream,
  69                  const nsAString& aContentType, uint64_t aLength,
  70                  const nsAString& aBlobImplType);
  71
  72   // File constructor.
  73   StreamBlobImpl(already_AddRefed<nsIInputStream> aInputStream,
  74                  const nsAString& aName, const nsAString& aContentType,
  75                  int64_t aLastModifiedDate, uint64_t aLength,
  76                  const nsAString& aBlobImplType);
  77
  78   ~StreamBlobImpl();
  79
  80   void MaybeRegisterMemoryReporter();
  81
  82   nsCOMPtr<nsIInputStream> mInputStream;
  83
  84   nsString mBlobImplType;
  85
  86   nsString mFullPath;
  87   bool mIsDirectory;
  88   int64_t mFileId;
  89 };
  90
  91 }  // namespace dom
  92 }  // namespace mozilla
  93
  94 #endif  // mozilla_dom_StreamBlobImpl_h