1 files changed, 114 insertions, 0 deletions
diff --git a/dom/file/BlobImpl.h b/dom/file/BlobImpl.h
new file mode 100644
index 0000000000..720c398cdd
--- /dev/null
+++ b/dom/file/BlobImpl.h
@@ -0,0 +1,114 @@
+/* -*- 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_BlobImpl_h
+#define mozilla_dom_BlobImpl_h
+
+#include "nsISupports.h"
+#include "nsString.h"
+
+#define BLOBIMPL_IID                                 \
+  {                                                  \
+    0xbccb3275, 0x6778, 0x4ac5, {                    \
+      0xaf, 0x03, 0x90, 0xed, 0x37, 0xad, 0xdf, 0x5d \
+    }                                                \
+  }
+
+class nsIInputStream;
+
+namespace mozilla {
+class ErrorResult;
+
+namespace dom {
+
+class SystemCallerGuarantee;
+template <typename T>
+class Optional;
+
+// This is the abstract class for any File backend. It must be nsISupports
+// because this class must be ref-counted and it has to work with IPC.
+class BlobImpl : public nsISupports {
+ public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(BLOBIMPL_IID)
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  BlobImpl() = default;
+
+  virtual void GetName(nsAString& aName) const = 0;
+
+  virtual void GetDOMPath(nsAString& aName) const = 0;
+
+  virtual void SetDOMPath(const nsAString& aName) = 0;
+
+  virtual int64_t GetLastModified(ErrorResult& aRv) = 0;
+
+  virtual void GetMozFullPath(nsAString& aName,
+                              SystemCallerGuarantee /* unused */,
+                              ErrorResult& aRv) = 0;
+
+  virtual void GetMozFullPathInternal(nsAString& aFileName,
+                                      ErrorResult& aRv) = 0;
+
+  virtual uint64_t GetSize(ErrorResult& aRv) = 0;
+
+  virtual void GetType(nsAString& aType) = 0;
+
+  virtual void GetBlobImplType(nsAString& aBlobImplType) const = 0;
+
+  virtual size_t GetAllocationSize() const = 0;
+  virtual size_t GetAllocationSize(
+      FallibleTArray<BlobImpl*>& aVisitedBlobImpls) const = 0;
+
+  /**
+   * An effectively-unique serial number identifying this instance of FileImpl.
+   *
+   * Implementations should obtain a serial number from
+   * FileImplBase::NextSerialNumber().
+   */
+  virtual uint64_t GetSerialNumber() const = 0;
+
+  already_AddRefed<BlobImpl> Slice(const Optional<int64_t>& aStart,
+                                   const Optional<int64_t>& aEnd,
+                                   const nsAString& aContentType,
+                                   ErrorResult& aRv);
+
+  virtual already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart,
+                                                 uint64_t aLength,
+                                                 const nsAString& aContentType,
+                                                 ErrorResult& aRv) const = 0;
+
+  virtual const nsTArray<RefPtr<BlobImpl>>* GetSubBlobImpls() const = 0;
+
+  virtual void CreateInputStream(nsIInputStream** aStream,
+                                 ErrorResult& aRv) const = 0;
+
+  virtual int64_t GetFileId() const = 0;
+
+  nsresult GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
+                       nsACString& aContentType, nsACString& aCharset);
+
+  virtual void SetLazyData(const nsAString& aName,
+                           const nsAString& aContentType, uint64_t aLength,
+                           int64_t aLastModifiedDate) = 0;
+
+  virtual bool IsMemoryFile() const = 0;
+
+  virtual bool IsFile() const = 0;
+
+  // Returns true if the BlobImpl is backed by an nsIFile and the underlying
+  // file is a directory.
+  virtual bool IsDirectory() const { return false; }
+
+ protected:
+  virtual ~BlobImpl() = default;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(BlobImpl, BLOBIMPL_IID)
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_BlobImpl_h