// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SERVICES_CONTENT_NAVIGABLE_CONTENTS_IMPL_H_
#define SERVICES_CONTENT_NAVIGABLE_CONTENTS_IMPL_H_

#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/unguessable_token.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "services/content/public/cpp/buildflags.h"
#include "services/content/public/mojom/navigable_contents.mojom.h"
#include "services/content/public/mojom/navigable_contents_factory.mojom.h"
#include "ui/gfx/native_widget_types.h"

namespace views {
class RemoteViewProvider;
}

namespace content {

class Service;
class NavigableContentsDelegate;
class NavigableContentsView;

// This is the state which backs an individual NavigableContents owned by some
// client of the Content Service. In terms of the classical Content API, this is
// roughly analogous to a WebContentsImpl.
class NavigableContentsImpl : public mojom::NavigableContents {
 public:
  NavigableContentsImpl(Service* service,
                        mojom::NavigableContentsParamsPtr params,
                        mojom::NavigableContentsRequest request,
                        mojom::NavigableContentsClientPtr client);
  ~NavigableContentsImpl() override;

 private:
  // mojom::NavigableContents:
  void Navigate(const GURL& url, mojom::NavigateParamsPtr params) override;
  void GoBack(mojom::NavigableContents::GoBackCallback callback) override;
  void CreateView(bool in_service_process,
                  CreateViewCallback callback) override;
  void Focus() override;
  void FocusThroughTabTraversal(bool reverse) override;

#if BUILDFLAG(ENABLE_REMOTE_NAVIGABLE_CONTENTS_VIEW)
  void OnEmbedTokenReceived(CreateViewCallback callback,
                            const base::UnguessableToken& token);
#endif

  // Used (indirectly) by the client library when run in the same process as the
  // service. See the |CreateView()| implementation for details.
  void EmbedInProcessClientView(NavigableContentsView* view);

  Service* const service_;

  mojo::Binding<mojom::NavigableContents> binding_;
  mojom::NavigableContentsClientPtr client_;
  std::unique_ptr<NavigableContentsDelegate> delegate_;
  gfx::NativeView native_content_view_;

#if BUILDFLAG(ENABLE_REMOTE_NAVIGABLE_CONTENTS_VIEW)
  std::unique_ptr<views::RemoteViewProvider> remote_view_provider_;
#endif

  base::WeakPtrFactory<NavigableContentsImpl> weak_ptr_factory_{this};

  DISALLOW_COPY_AND_ASSIGN(NavigableContentsImpl);
};

}  // namespace content

#endif  // SERVICES_CONTENT_NAVIGABLE_CONTENTS_IMPL_H_