/* -*- 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_FilePickerParent_h

#define mozilla_dom_FilePickerParent_h

#include "nsIEventTarget.h"

#include "nsIFilePicker.h"

#include "nsCOMArray.h"

#include "nsThreadUtils.h"

#include "mozilla/dom/File.h"

#include "mozilla/dom/PFilePickerParent.h"

class nsIFile;

namespace mozilla {

namespace dom {

class FilePickerParent : public PFilePickerParent

{

 public:

  FilePickerParent(const nsString& aTitle,

                   const int16_t& aMode)

  : mTitle(aTitle)

  , mMode(aMode)

  , mResult(nsIFilePicker::returnOK)

  {}

  virtual ~FilePickerParent();

  void Done(int16_t aResult);

  struct BlobImplOrString

  {

    RefPtr<BlobImpl> mBlobImpl;

    nsString mDirectoryPath;

    enum {

      eBlobImpl,

      eDirectoryPath

    } mType;

  };

  void SendFilesOrDirectories(const nsTArray<BlobImplOrString>& aData);

  virtual mozilla::ipc::IPCResult RecvOpen(const int16_t& aSelectedType,

                                           const bool& aAddToRecentDocs,

                                           const nsString& aDefaultFile,

                                           const nsString& aDefaultExtension,

                                           InfallibleTArray<nsString>&& aFilters,

                                           InfallibleTArray<nsString>&& aFilterNames,

                                           const nsString& aDisplayDirectory,

                                           const nsString& aDisplaySpecialDirectory,

                                           const nsString& aOkButtonLabel) override;

  virtual void ActorDestroy(ActorDestroyReason aWhy) override;

  class FilePickerShownCallback : public nsIFilePickerShownCallback

  {

  public:

    explicit FilePickerShownCallback(FilePickerParent* aFilePickerParent)

      : mFilePickerParent(aFilePickerParent)

    { }

    NS_DECL_ISUPPORTS

    NS_DECL_NSIFILEPICKERSHOWNCALLBACK

    void Destroy();

  private:

    virtual ~FilePickerShownCallback() {}

    FilePickerParent* mFilePickerParent;

  };

 private:

  bool CreateFilePicker();

  // This runnable is used to do some I/O operation on a separate thread.

  class IORunnable : public Runnable

  {

    FilePickerParent* mFilePickerParent;

    nsTArray<nsCOMPtr<nsIFile>> mFiles;

    nsTArray<BlobImplOrString> mResults;

    nsCOMPtr<nsIEventTarget> mEventTarget;

    bool mIsDirectory;

  public:

    IORunnable(FilePickerParent *aFPParent,

               nsTArray<nsCOMPtr<nsIFile>>& aFiles,

               bool aIsDirectory);

    bool Dispatch();

    NS_IMETHOD Run() override;

    void Destroy();

  };

  RefPtr<IORunnable> mRunnable;

  RefPtr<FilePickerShownCallback> mCallback;

  nsCOMPtr<nsIFilePicker> mFilePicker;

  nsString mTitle;

  int16_t mMode;

  int16_t mResult;

};

} // namespace dom

} // namespace mozilla

#endif // mozilla_dom_FilePickerParent_h