1 files changed, 59 insertions, 0 deletions
diff --git a/dom/file/ipc/FileCreatorChild.cpp b/dom/file/ipc/FileCreatorChild.cpp
new file mode 100644
index 0000000000..95ac19f17b
--- /dev/null
+++ b/dom/file/ipc/FileCreatorChild.cpp
@@ -0,0 +1,59 @@
+/* -*- 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/. */
+
+#include "FileCreatorChild.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/IPCBlobUtils.h"
+
+namespace mozilla::dom {
+
+FileCreatorChild::FileCreatorChild() = default;
+
+FileCreatorChild::~FileCreatorChild() { MOZ_ASSERT(!mPromise); }
+
+void FileCreatorChild::SetPromise(Promise* aPromise) {
+  MOZ_ASSERT(aPromise);
+  MOZ_ASSERT(!mPromise);
+
+  mPromise = aPromise;
+}
+
+mozilla::ipc::IPCResult FileCreatorChild::Recv__delete__(
+    const FileCreationResult& aResult) {
+  MOZ_ASSERT(mPromise);
+
+  RefPtr<Promise> promise;
+  promise.swap(mPromise);
+
+  if (aResult.type() == FileCreationResult::TFileCreationErrorResult) {
+    promise->MaybeReject(aResult.get_FileCreationErrorResult().errorCode());
+    return IPC_OK();
+  }
+
+  MOZ_ASSERT(aResult.type() == FileCreationResult::TFileCreationSuccessResult);
+
+  RefPtr<dom::BlobImpl> impl = dom::IPCBlobUtils::Deserialize(
+      aResult.get_FileCreationSuccessResult().blob());
+
+  RefPtr<File> file = File::Create(promise->GetParentObject(), impl);
+  if (NS_WARN_IF(!file)) {
+    promise->MaybeReject(NS_ERROR_FAILURE);
+    return IPC_OK();
+  }
+
+  promise->MaybeResolve(file);
+  return IPC_OK();
+}
+
+void FileCreatorChild::ActorDestroy(ActorDestroyReason aWhy) {
+  if (mPromise) {
+    mPromise->MaybeReject(NS_ERROR_FAILURE);
+    mPromise = nullptr;
+  }
+};
+
+}  // namespace mozilla::dom