/* Copyright (c) 2012 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.
 */

/**
 * This file defines the <code>PPB_NetworkMonitor</code> interface.
 */

[generate_thunk]

label Chrome {
  M31 = 1.0
};

/**
 * The <code>PPB_NetworkMonitor</code> allows to get network interfaces
 * configuration and monitor network configuration changes.
 *
 * Permissions: Apps permission <code>socket</code> with subrule
 * <code>network-state</code> is required for <code>UpdateNetworkList()</code>.
 * For more details about network communication permissions, please see:
 * http://developer.chrome.com/apps/app_network.html
 */
interface PPB_NetworkMonitor {
  /**
   * Creates a Network Monitor resource.
   *
   * @param[in] instance A <code>PP_Instance</code> identifying one instance of
   * a module.
   *
   * @return A <code>PP_Resource</code> corresponding to a network monitor or 0
   * on failure.
   */
  PP_Resource Create([in] PP_Instance instance);


  /**
   * Gets current network configuration. When called for the first time,
   * completes as soon as the current network configuration is received from
   * the browser. Each consequent call will wait for network list changes,
   * returning a new <code>PPB_NetworkList</code> resource every time.
   *
   * @param[in] network_monitor A <code>PP_Resource</code> corresponding to a
   * network monitor.
   * @param[out] network_list The <code>PPB_NetworkList<code> resource with the
   * current state of network interfaces.
   * @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
   * completion.
   *
   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
   * <code>PP_ERROR_NOACCESS</code> will be returned if the caller doesn't have
   * required permissions.
   */
  int32_t UpdateNetworkList([in] PP_Resource network_monitor,
                            [out] PP_Resource network_list,
                            [in] PP_CompletionCallback callback);

  /**
   * Determines if the specified <code>resource</code> is a
   * <code>NetworkMonitor</code> object.
   *
   * @param[in] resource A <code>PP_Resource</code> resource.
   *
   * @return Returns <code>PP_TRUE</code> if <code>resource</code> is a
   * <code>PPB_NetworkMonitor</code>, <code>PP_FALSE</code>  otherwise.
   */
  PP_Bool IsNetworkMonitor([in] PP_Resource resource);
};