// Copyright 2014 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 MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_
#define MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_

#include <string>

#include "mojo/services/view_manager/public/cpp/types.h"

namespace mojo {
class View;

// Encapsulates a connection to the view manager service.
// A unique connection is made for every unique embed path for an app. e.g. for
// app B embed by the following paths: A->B, A->C->B - there are two connections
// and thus two instances of this class.
class ViewManager {
 public:
  // Returns the URL of the application that embedded this application.
  virtual const std::string& GetEmbedderURL() const = 0;

  // Returns the root of this connection.
  virtual View* GetRoot() = 0;

  // Returns a View known to this connection.
  virtual View* GetViewById(Id id) = 0;

  // Returns the focused view; null if focus is not yet known or another app is
  // focused.
  virtual View* GetFocusedView() = 0;

 protected:
  virtual ~ViewManager() {}
};

}  // namespace mojo

#endif  // MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_MANAGER_H_