// Copyright 2016 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.

module ash.mojom;

struct CastSink {
  string id;
  string name;
  string domain;
};

enum ContentSource {
  UNKNOWN,
  TAB,
  DESKTOP
};

struct CastRoute {
  string id;
  string title;

  // Is the activity source this computer? ie, are we mirroring the display?
  bool is_local_source = false;

  // What is source of the content? For example, we could be DIAL casting a
  // tab or mirroring the entire desktop.
  ContentSource content_source = ContentSource.UNKNOWN;
};

struct SinkAndRoute {
  CastSink sink;
  CastRoute route;
};

// Allows clients (e.g. Chrome browser) to interface with the cast item in the
// system tray.
interface CastConfig {
  // Sets the client interface. This client interface will receive commands from
  // ash and provide OnDevicesUpdated() calls.
  SetClient(associated CastConfigClient client);

  // Invoked whenever there is new sink or route information available.
  OnDevicesUpdated(array<SinkAndRoute> device);
};

// This delegate allows the UI code in ash, e.g. |TrayCastDetailedView|,
// to access the cast system.
//
// TODO(erg): Eventually, this should no longer be exported by chrome, but
// should be exported by a separate cast service.
interface CastConfigClient {
  // Request fresh data from the backend. When the data is available, all
  // registered observers will get called.
  RequestDeviceRefresh();

  // Initiate a casting session to |sink|.
  CastToSink(CastSink sink);

  // A user-initiated request to stop the given cast session.
  StopCasting(CastRoute route);
};