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/*
 * Copyright 2013 Canonical Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Authors:
 *   Charles Kerr <charles.kerr@canonical.com>
 */


/**
 * Abstract interface for the Bluetooth backend.
 */
public interface Bluetooth: Object
{
  /* True if there are any bluetooth adapters on this system.
     This work as a proxy for "does this hardware support bluetooth?" */
  public abstract bool supported { get; protected set; }

  /* True if bluetooth's enabled on this system.
     Bluetooth can be soft-blocked by software and hard-blocked physically,
     eg by a laptop's network killswitch */
  public abstract bool enabled { get; protected set; }

  /* True if we have a connected device. */
  public abstract bool connected { get; protected set; }

  /* Try to enable/disable bluetooth. This can fail if it's overridden
     by the system, eg by a laptop's network killswitch */
  public abstract void try_set_enabled (bool b);

  /* True if our system can be seen by other bluetooth devices */
  public abstract bool discoverable { get; protected set; }
  public abstract void try_set_discoverable (bool discoverable);

  /* Get a list of the Device structs that we know about */
  public abstract List<unowned Device> get_devices ();

  /* Emitted when one or more of the devices is added, removed, or changed */
  public signal void devices_changed ();

  /* Try to connect/disconnect a particular device.
     The device_key argument comes from the Device struct */
  public abstract void set_device_connected (uint device_key, bool connected);
}