1 files changed, 94 insertions, 0 deletions
diff --git a/dom/file/FileList.cpp b/dom/file/FileList.cpp
new file mode 100644
index 0000000000..2cc7b0c7f1
--- /dev/null
+++ b/dom/file/FileList.cpp
@@ -0,0 +1,94 @@
+/* -*- 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 "mozilla/dom/FileList.h"
+
+#include <new>
+#include <utility>
+#include "ErrorList.h"
+#include "js/RootingAPI.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/MacroForEach.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/File.h"
+#include "mozilla/dom/FileListBinding.h"
+#include "mozilla/fallible.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsCycleCollectionTraversalCallback.h"
+#include "nsISupports.h"
+#include "nsTArray.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(FileList, mFiles, mParent)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileList)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(FileList)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(FileList)
+
+FileList::FileList(nsISupports* aParent) : mParent(aParent) {}
+
+FileList::~FileList() = default;
+
+JSObject* FileList::WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) {
+  return mozilla::dom::FileList_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+bool FileList::Append(File* aFile) {
+  MOZ_ASSERT(aFile);
+  return mFiles.AppendElement(aFile, fallible);
+}
+
+bool FileList::Remove(uint32_t aIndex) {
+  if (aIndex < mFiles.Length()) {
+    mFiles.RemoveElementAt(aIndex);
+    return true;
+  }
+
+  return false;
+}
+
+void FileList::Clear() { return mFiles.Clear(); }
+
+File* FileList::Item(uint32_t aIndex) const {
+  if (aIndex >= mFiles.Length()) {
+    return nullptr;
+  }
+
+  return mFiles[aIndex];
+}
+
+File* FileList::IndexedGetter(uint32_t aIndex, bool& aFound) const {
+  aFound = aIndex < mFiles.Length();
+  return Item(aIndex);
+}
+
+void FileList::ToSequence(Sequence<RefPtr<File>>& aSequence,
+                          ErrorResult& aRv) const {
+  MOZ_ASSERT(aSequence.IsEmpty());
+  if (mFiles.IsEmpty()) {
+    return;
+  }
+
+  if (!aSequence.SetLength(mFiles.Length(), mozilla::fallible_t())) {
+    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return;
+  }
+
+  for (uint32_t i = 0; i < mFiles.Length(); ++i) {
+    aSequence[i] = mFiles[i];
+  }
+}
+
+}  // namespace mozilla::dom