/*
 * Clutter.
 *
 * An OpenGL based 'interactive canvas' library.
 *
 * Copyright (C) 2009  Intel Corp.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Emmanuele Bassi <ebassi@linux.intel.com>
 */

/**
 * SECTION:clutter-device-manager
 * @short_description: Maintains the list of input devices
 *
 * #ClutterDeviceManager is a singleton object, owned by Clutter, which
 * maintains the list of #ClutterInputDevice<!-- -->s.
 *
 * Depending on the backend used by Clutter it is possible to use the
 * #ClutterDeviceManager::device-added and
 * #ClutterDeviceManager::device-removed to monitor addition and removal
 * of devices.
 *
 * #ClutterDeviceManager is available since Clutter 1.2
 */

#include "clutter-build-config.h"

#include "clutter-backend-private.h"
#include "clutter-debug.h"
#include "clutter-device-manager-private.h"
#include "clutter-enum-types.h"
#include "clutter-marshal.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#include "clutter-virtual-input-device.h"
#include "clutter-input-device-tool.h"
#include "clutter-input-pointer-a11y-private.h"

struct _ClutterDeviceManagerPrivate
{
  /* back-pointer to the backend */
  ClutterBackend *backend;

  /* Keyboard a11y */
  ClutterKbdA11ySettings kbd_a11y_settings;
  /* Pointer a11y */
  ClutterPointerA11ySettings pointer_a11y_settings;
};

enum
{
  PROP_0,

  PROP_BACKEND,

  PROP_LAST
};

static GParamSpec *obj_props[PROP_LAST];

enum
{
  DEVICE_ADDED,
  DEVICE_REMOVED,
  TOOL_CHANGED,
  KBD_A11Y_MASK_CHANGED,
  KBD_A11Y_FLAGS_CHANGED,
  PTR_A11Y_DWELL_CLICK_TYPE_CHANGED,
  PTR_A11Y_TIMEOUT_STARTED,
  PTR_A11Y_TIMEOUT_STOPPED,

  LAST_SIGNAL
};

static guint manager_signals[LAST_SIGNAL] = { 0, };

G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (ClutterDeviceManager,
                                     clutter_device_manager,
                                     G_TYPE_OBJECT)

G_DEFINE_INTERFACE (ClutterEventExtender,
                    clutter_event_extender,
                    CLUTTER_TYPE_DEVICE_MANAGER)

static void
clutter_event_extender_default_init (ClutterEventExtenderInterface *iface)
{
}

static void
clutter_device_manager_set_property (GObject      *gobject,
                                     guint         prop_id,
                                     const GValue *value,
                                     GParamSpec   *pspec)
{
  ClutterDeviceManagerPrivate *priv = CLUTTER_DEVICE_MANAGER (gobject)->priv;

  switch (prop_id)
    {
    case PROP_BACKEND:
      priv->backend = g_value_get_object (value);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
    }
}

static void
clutter_device_manager_get_property (GObject    *gobject,
                                     guint       prop_id,
                                     GValue     *value,
                                     GParamSpec *pspec)
{
  ClutterDeviceManagerPrivate *priv = CLUTTER_DEVICE_MANAGER (gobject)->priv;

  switch (prop_id)
    {
    case PROP_BACKEND:
      g_value_set_object (value, priv->backend);
      break;

    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
    }
}

static void
clutter_device_manager_class_init (ClutterDeviceManagerClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  obj_props[PROP_BACKEND] =
    g_param_spec_object ("backend",
                         P_("Backend"),
                         P_("The ClutterBackend of the device manager"),
                         CLUTTER_TYPE_BACKEND,
                         CLUTTER_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);

  gobject_class->set_property = clutter_device_manager_set_property;
  gobject_class->get_property = clutter_device_manager_get_property;
  g_object_class_install_properties (gobject_class,
                                     PROP_LAST,
                                     obj_props);

  /**
   * ClutterDeviceManager::device-added:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @device: the newly added #ClutterInputDevice
   *
   * The ::device-added signal is emitted each time a device has been
   * added to the #ClutterDeviceManager
   *
   * Since: 1.2
   */
  manager_signals[DEVICE_ADDED] =
    g_signal_new (I_("device-added"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  _clutter_marshal_VOID__OBJECT,
                  G_TYPE_NONE, 1,
                  CLUTTER_TYPE_INPUT_DEVICE);

  /**
   * ClutterDeviceManager::device-removed:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @device: the removed #ClutterInputDevice
   *
   * The ::device-removed signal is emitted each time a device has been
   * removed from the #ClutterDeviceManager
   *
   * Since: 1.2
   */
  manager_signals[DEVICE_REMOVED] =
    g_signal_new (I_("device-removed"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  _clutter_marshal_VOID__OBJECT,
                  G_TYPE_NONE, 1,
                  CLUTTER_TYPE_INPUT_DEVICE);

  manager_signals[TOOL_CHANGED] =
    g_signal_new (I_("tool-changed"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  _clutter_marshal_VOID__OBJECT_OBJECT,
                  G_TYPE_NONE, 2,
                  CLUTTER_TYPE_INPUT_DEVICE,
                  CLUTTER_TYPE_INPUT_DEVICE_TOOL);

  /**
   * ClutterDeviceManager::kbd-a11y-mods-state-changed:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @latched_mask: the latched modifier mask from stickykeys
   * @locked_mask:  the locked modifier mask from stickykeys
   *
   * The ::kbd-a11y-mods-state-changed signal is emitted each time either the
   * latched modifiers mask or locked modifiers mask are changed as the
   * result of keyboard accessibilty's sticky keys operations.
   */
  manager_signals[KBD_A11Y_MASK_CHANGED] =
    g_signal_new (I_("kbd-a11y-mods-state-changed"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  _clutter_marshal_VOID__UINT_UINT,
                  G_TYPE_NONE, 2,
                  G_TYPE_UINT,
                  G_TYPE_UINT);

  /**
   * ClutterDeviceManager::kbd-a11y-flags-changed:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @settings_flags: the new ClutterKeyboardA11yFlags configuration
   * @changed_mask: the ClutterKeyboardA11yFlags changed
   *
   * The ::kbd-a11y-flags-changed signal is emitted each time the
   * ClutterKeyboardA11yFlags configuration is changed as the result of
   * keyboard accessibilty operations.
   */
  manager_signals[KBD_A11Y_FLAGS_CHANGED] =
    g_signal_new (I_("kbd-a11y-flags-changed"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  _clutter_marshal_VOID__UINT_UINT,
                  G_TYPE_NONE, 2,
                  G_TYPE_UINT,
                  G_TYPE_UINT);

  /**
   * ClutterDeviceManager::ptr-a11y-dwell-click-type-changed:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @click_type: the new #ClutterPointerA11yDwellClickType mode
   *
   * The ::ptr-a11y-dwell-click-type-changed signal is emitted each time
   * the ClutterPointerA11yDwellClickType mode is changed as the result
   * of pointer accessibility operations.
   */
  manager_signals[PTR_A11Y_DWELL_CLICK_TYPE_CHANGED] =
    g_signal_new (I_("ptr-a11y-dwell-click-type-changed"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  g_cclosure_marshal_VOID__FLAGS,
                  G_TYPE_NONE, 1,
                  CLUTTER_TYPE_POINTER_A11Y_DWELL_CLICK_TYPE);

  /**
   * ClutterDeviceManager::ptr-a11y-timeout-started:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @device: the core pointer #ClutterInputDevice
   * @timeout_type: the type of timeout #ClutterPointerA11yTimeoutType
   * @delay: the delay in ms before secondary-click is triggered.
   *
   * The ::ptr-a11y-timeout-started signal is emitted when a
   * pointer accessibility timeout delay is started, so that upper
   * layers can notify the user with some visual feedback.
   */
  manager_signals[PTR_A11Y_TIMEOUT_STARTED] =
    g_signal_new (I_("ptr-a11y-timeout-started"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  _clutter_marshal_VOID__OBJECT_FLAGS_UINT,
                  G_TYPE_NONE, 3,
                  CLUTTER_TYPE_INPUT_DEVICE,
                  CLUTTER_TYPE_POINTER_A11Y_TIMEOUT_TYPE,
                  G_TYPE_UINT);

  /**
   * ClutterDeviceManager::ptr-a11y-timeout-stopped:
   * @manager: the #ClutterDeviceManager that emitted the signal
   * @device: the core pointer #ClutterInputDevice
   * @timeout_type: the type of timeout #ClutterPointerA11yTimeoutType
   *
   * The ::ptr-a11y-timeout-stopped signal is emitted when a running
   * pointer accessibility timeout delay is stopped, either because
   * it's triggered at the end of the delay or cancelled, so that
   * upper layers can notify the user with some visual feedback.
   */
  manager_signals[PTR_A11Y_TIMEOUT_STOPPED] =
    g_signal_new (I_("ptr-a11y-timeout-stopped"),
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0, NULL, NULL,
                  _clutter_marshal_VOID__OBJECT_FLAGS,
                  G_TYPE_NONE, 2,
                  CLUTTER_TYPE_INPUT_DEVICE,
                  CLUTTER_TYPE_POINTER_A11Y_TIMEOUT_TYPE);
}

static void
clutter_device_manager_init (ClutterDeviceManager *self)
{
  self->priv = clutter_device_manager_get_instance_private (self);
}

/**
 * clutter_device_manager_get_default:
 *
 * Retrieves the device manager singleton
 *
 * Return value: (transfer none): the #ClutterDeviceManager singleton.
 *   The returned instance is owned by Clutter and it should not be
 *   modified or freed
 *
 * Since: 1.2
 */
ClutterDeviceManager *
clutter_device_manager_get_default (void)
{
  ClutterBackend *backend = clutter_get_default_backend ();

  return backend->device_manager;
}

/**
 * clutter_device_manager_list_devices:
 * @device_manager: a #ClutterDeviceManager
 *
 * Lists all currently registered input devices
 *
 * Return value: (transfer container) (element-type Clutter.InputDevice):
 *   a newly allocated list of #ClutterInputDevice objects. Use
 *   g_slist_free() to deallocate it when done
 *
 * Since: 1.2
 */
GSList *
clutter_device_manager_list_devices (ClutterDeviceManager *device_manager)
{
  const GSList *devices;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);

  devices = clutter_device_manager_peek_devices (device_manager);

  return g_slist_copy ((GSList *) devices);
}

/**
 * clutter_device_manager_peek_devices:
 * @device_manager: a #ClutterDeviceManager
 *
 * Lists all currently registered input devices
 *
 * Return value: (transfer none) (element-type Clutter.InputDevice):
 *   a pointer to the internal list of #ClutterInputDevice objects. The
 *   returned list is owned by the #ClutterDeviceManager and should never
 *   be modified or freed
 *
 * Since: 1.2
 */
const GSList *
clutter_device_manager_peek_devices (ClutterDeviceManager *device_manager)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  return manager_class->get_devices (device_manager);
}

/**
 * clutter_device_manager_get_device:
 * @device_manager: a #ClutterDeviceManager
 * @device_id: the integer id of a device
 *
 * Retrieves the #ClutterInputDevice with the given @device_id
 *
 * Return value: (transfer none): a #ClutterInputDevice or %NULL. The
 *   returned device is owned by the #ClutterDeviceManager and should
 *   never be modified or freed
 *
 * Since: 1.2
 */
ClutterInputDevice *
clutter_device_manager_get_device (ClutterDeviceManager *device_manager,
                                   gint                  device_id)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  return manager_class->get_device (device_manager, device_id);
}

/**
 * clutter_device_manager_get_core_device:
 * @device_manager: a #ClutterDeviceManager
 * @device_type: the type of the core device
 *
 * Retrieves the core #ClutterInputDevice of type @device_type
 *
 * Core devices are devices created automatically by the default
 * Clutter backend
 *
 * Return value: (transfer none): a #ClutterInputDevice or %NULL. The
 *   returned device is owned by the #ClutterDeviceManager and should
 *   not be modified or freed
 *
 * Since: 1.2
 */
ClutterInputDevice *
clutter_device_manager_get_core_device (ClutterDeviceManager   *device_manager,
                                        ClutterInputDeviceType  device_type)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  return manager_class->get_core_device (device_manager, device_type);
}

void
_clutter_device_manager_select_stage_events (ClutterDeviceManager *device_manager,
                                             ClutterStage         *stage)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  if (manager_class->select_stage_events)
    manager_class->select_stage_events (device_manager, stage);
}

/*
 * _clutter_device_manager_add_device:
 * @device_manager: a #ClutterDeviceManager
 * @device: a #ClutterInputDevice
 *
 * Adds @device to the list of #ClutterInputDevice<!-- -->s maintained
 * by @device_manager
 *
 * The reference count of @device is not increased
 *
 * The #ClutterDeviceManager::device-added signal is emitted after
 * adding @device to the list
 */
void
_clutter_device_manager_add_device (ClutterDeviceManager *device_manager,
                                    ClutterInputDevice   *device)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  g_assert (manager_class->add_device != NULL);

  manager_class->add_device (device_manager, device);

  g_signal_emit (device_manager, manager_signals[DEVICE_ADDED], 0, device);
}

/*
 * _clutter_device_manager_remove_device:
 * @device_manager: a #ClutterDeviceManager
 * @device: a #ClutterInputDevice
 *
 * Removes @device from the list of #ClutterInputDevice<!-- -->s
 * maintained by @device_manager
 *
 * The reference count of @device is not decreased
 *
 * The #ClutterDeviceManager::device-removed signal is emitted after
 * removing @device from the list
 */
void
_clutter_device_manager_remove_device (ClutterDeviceManager *device_manager,
                                       ClutterInputDevice   *device)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  g_assert (manager_class->remove_device != NULL);

  /* The subclass remove_device() method will likely unref it but we
     have to keep it alive during the signal emission. */
  g_object_ref (device);

  manager_class->remove_device (device_manager, device);
  g_signal_emit (device_manager, manager_signals[DEVICE_REMOVED], 0, device);

  g_object_unref (device);
}

/*
 * _clutter_device_manager_update_devices:
 * @device_manager: a #ClutterDeviceManager
 *
 * Updates every #ClutterInputDevice handled by @device_manager
 * by performing a pick paint at the coordinates of each pointer
 * device
 */
void
_clutter_device_manager_update_devices (ClutterDeviceManager *device_manager)
{
  const GSList *d;

  for (d = clutter_device_manager_peek_devices (device_manager);
       d != NULL;
       d = d->next)
    {
      ClutterInputDevice *device = d->data;
      ClutterInputDeviceType device_type;

      /* we only care about pointer devices */
      device_type = clutter_input_device_get_device_type (device);
      if (device_type != CLUTTER_POINTER_DEVICE)
        continue;

      /* out of stage */
      if (device->stage == NULL)
        continue;

      /* the user disabled motion events delivery on actors for
       * the stage the device is on; we don't perform any picking
       * since the source of the events will always be set to be
       * the stage
       */
      if (!clutter_stage_get_motion_events_enabled (device->stage))
        continue;

      _clutter_input_device_update (device, NULL, TRUE);
    }
}

ClutterBackend *
_clutter_device_manager_get_backend (ClutterDeviceManager *manager)
{
  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (manager), NULL);

  return manager->priv->backend;
}

/**
 * clutter_device_manager_create_virtual_device:
 * @device_manager: a #ClutterDeviceManager
 * @device_type: the type of the virtual device
 *
 * Creates a virtual input device.
 *
 * Returns: (transfer full): a newly created virtual device
 **/
ClutterVirtualInputDevice *
clutter_device_manager_create_virtual_device (ClutterDeviceManager   *device_manager,
                                              ClutterInputDeviceType  device_type)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager), NULL);

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  return manager_class->create_virtual_device (device_manager,
                                               device_type);
}

/**
 * clutter_device_manager_supported_virtua_device_types: (skip)
 */
ClutterVirtualDeviceType
clutter_device_manager_get_supported_virtual_device_types (ClutterDeviceManager *device_manager)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_val_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager),
                        CLUTTER_VIRTUAL_DEVICE_TYPE_NONE);

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  return manager_class->get_supported_virtual_device_types (device_manager);
}

void
_clutter_device_manager_compress_motion (ClutterDeviceManager *device_manager,
                                         ClutterEvent         *event,
                                         const ClutterEvent   *to_discard)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));


  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  if (!manager_class->compress_motion)
    return;

  manager_class->compress_motion (device_manager, event, to_discard);
}

static gboolean
are_kbd_a11y_settings_equal (ClutterKbdA11ySettings *a,
                             ClutterKbdA11ySettings *b)
{
  return (memcmp (a, b, sizeof (ClutterKbdA11ySettings)) == 0);
}

void
clutter_device_manager_set_kbd_a11y_settings (ClutterDeviceManager   *device_manager,
                                              ClutterKbdA11ySettings *settings)
{
  ClutterDeviceManagerClass *manager_class;

  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  if (are_kbd_a11y_settings_equal (&device_manager->priv->kbd_a11y_settings, settings))
    return;

  device_manager->priv->kbd_a11y_settings = *settings;

  manager_class = CLUTTER_DEVICE_MANAGER_GET_CLASS (device_manager);
  if (manager_class->apply_kbd_a11y_settings)
    manager_class->apply_kbd_a11y_settings (device_manager, settings);
}

void
clutter_device_manager_get_kbd_a11y_settings (ClutterDeviceManager   *device_manager,
                                              ClutterKbdA11ySettings *settings)
{
  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  *settings = device_manager->priv->kbd_a11y_settings;
}

static gboolean
are_pointer_a11y_settings_equal (ClutterPointerA11ySettings *a,
                                 ClutterPointerA11ySettings *b)
{
  return (memcmp (a, b, sizeof (ClutterPointerA11ySettings)) == 0);
}

static void
clutter_device_manager_enable_pointer_a11y (ClutterDeviceManager *device_manager)
{
  ClutterInputDevice *core_pointer;

  core_pointer = clutter_device_manager_get_core_device (device_manager,
                                                         CLUTTER_POINTER_DEVICE);

  _clutter_input_pointer_a11y_add_device (core_pointer);
}

static void
clutter_device_manager_disable_pointer_a11y (ClutterDeviceManager *device_manager)
{
  ClutterInputDevice *core_pointer;

  core_pointer = clutter_device_manager_get_core_device (device_manager,
                                                         CLUTTER_POINTER_DEVICE);

  _clutter_input_pointer_a11y_remove_device (core_pointer);
}

/**
 * clutter_device_manager_set_pointer_a11y_settings:
 * @device_manager: a #ClutterDeviceManager
 * @settings: a pointer to a #ClutterPointerA11ySettings
 *
 * Sets the pointer accessibility settings
 **/
void
clutter_device_manager_set_pointer_a11y_settings (ClutterDeviceManager       *device_manager,
                                                  ClutterPointerA11ySettings *settings)
{
  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  if (are_pointer_a11y_settings_equal (&device_manager->priv->pointer_a11y_settings, settings))
    return;

  if (device_manager->priv->pointer_a11y_settings.controls == 0 && settings->controls != 0)
    clutter_device_manager_enable_pointer_a11y (device_manager);
  else if (device_manager->priv->pointer_a11y_settings.controls != 0 && settings->controls == 0)
    clutter_device_manager_disable_pointer_a11y (device_manager);

  device_manager->priv->pointer_a11y_settings = *settings;
}

/**
 * clutter_device_manager_get_pointer_a11y_settings:
 * @device_manager: a #ClutterDeviceManager
 * @settings: a pointer to a #ClutterPointerA11ySettings
 *
 * Gets the current pointer accessibility settings
 **/
void
clutter_device_manager_get_pointer_a11y_settings (ClutterDeviceManager       *device_manager,
                                                  ClutterPointerA11ySettings *settings)
{
  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  *settings = device_manager->priv->pointer_a11y_settings;
}

/**
 * clutter_device_manager_set_pointer_a11y_dwell_click_type:
 * @device_manager: a #ClutterDeviceManager
 * @click_type: type of click as #ClutterPointerA11yDwellClickType
 *
 * Sets the dwell click type
 **/
void
clutter_device_manager_set_pointer_a11y_dwell_click_type (ClutterDeviceManager             *device_manager,
                                                          ClutterPointerA11yDwellClickType  click_type)
{
  g_return_if_fail (CLUTTER_IS_DEVICE_MANAGER (device_manager));

  device_manager->priv->pointer_a11y_settings.dwell_click_type = click_type;
}
