gecko-dev/dom/file/FileList.h

/* -*- 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();
  }

  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