import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/base/FileList.h

@@ -0,0 +1,103 @@
+/* -*- 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_FileList_h
+#define mozilla_dom_FileList_h
+
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/UnionTypes.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsIDOMFileList.h"
+#include "nsWrapperCache.h"
+
+namespace mozilla {
+namespace dom {
+
+class BlobImpls;
+class File;
+
+class FileList final : public nsIDOMFileList,
+                       public nsWrapperCache
+{
+public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(FileList)
+
+  NS_DECL_NSIDOMFILELIST
+
+  explicit FileList(nsISupports* aParent)
+    : mParent(aParent)
+  {}
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  nsISupports* GetParentObject()
+  {
+    return mParent;
+  }
+
+  bool Append(File* aFile)
+  {
+    MOZ_ASSERT(aFile);
+    return mFiles.AppendElement(aFile, fallible);
+  }
+
+  bool Remove(uint32_t aIndex)
+  {
+    if (aIndex < mFiles.Length()) {
+      mFiles.RemoveElementAt(aIndex);
+      return true;
+    }
+
+    return false;
+  }
+
+  void Clear()
+  {
+    return mFiles.Clear();
+  }
+
+  static FileList* FromSupports(nsISupports* aSupports)
+  {
+#ifdef DEBUG
+    {
+      nsCOMPtr<nsIDOMFileList> list_qi = do_QueryInterface(aSupports);
+
+      // If this assertion fires the QI implementation for the object in
+      // question doesn't use the nsIDOMFileList pointer as the nsISupports
+      // pointer. That must be fixed, or we'll crash...
+      NS_ASSERTION(list_qi == static_cast<nsIDOMFileList*>(aSupports),
+                   "Uh, fix QI!");
+    }
+#endif
+
+    return static_cast<FileList*>(aSupports);
+  }
+
+  File* Item(uint32_t aIndex) const;
+
+  File* IndexedGetter(uint32_t aIndex, bool& aFound) const;
+
+  uint32_t Length() const
+  {
+    return mFiles.Length();
+  }
+
+  void ToSequence(Sequence<RefPtr<File>>& aSequence,
+                  ErrorResult& aRv) const;
+
+private:
+  ~FileList() {}
+
+  FallibleTArray<RefPtr<File>> mFiles;
+  nsCOMPtr<nsISupports> mParent;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_FileList_h