1 files changed, 47 insertions, 0 deletions
diff --git a/dom/file/TemporaryFileBlobImpl.h b/dom/file/TemporaryFileBlobImpl.h
new file mode 100644
index 0000000000..d11c67f955
--- /dev/null
+++ b/dom/file/TemporaryFileBlobImpl.h
@@ -0,0 +1,47 @@
+/* -*- 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_TemporaryFileBlobImpl_h
+#define mozilla_dom_TemporaryFileBlobImpl_h
+
+#include "FileBlobImpl.h"
+
+namespace mozilla::dom {
+
+// This class is meant to be used by TemporaryIPCBlobParent only.
+// Don't use it for anything else, please!
+// Note that CreateInputStream() _must_ be called, and called just once!
+
+// This class is a BlobImpl because it needs to be sent via IPC using
+// IPCBlobUtils.
+class TemporaryFileBlobImpl final : public FileBlobImpl {
+#ifdef DEBUG
+  mutable bool mInputStreamCreated;
+#endif
+
+ public:
+  explicit TemporaryFileBlobImpl(nsIFile* aFile, const nsAString& aContentType);
+
+  // Overrides
+  void CreateInputStream(nsIInputStream** aStream,
+                         ErrorResult& aRv) const override;
+
+  void GetBlobImplType(nsAString& aBlobImplType) const override {
+    aBlobImplType = u"TemporaryFileBlobImpl"_ns;
+  }
+
+ protected:
+  ~TemporaryFileBlobImpl() override;
+
+ private:
+  already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart, uint64_t aLength,
+                                         const nsAString& aContentType,
+                                         ErrorResult& aRv) const override;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_TemporaryFileBlobImpl_h