static void set_selection(struct wl_client * client,
struct wl_resource * resource,
struct wl_resource * data_source, uint32_t serial)
{
struct data_device * data_device = wl_resource_get_user_data(resource);
/* Check if this data source is already the current selection. */
if (data_source == data_device->selection)
return;
if (data_device->selection)
{
wl_data_source_send_cancelled(data_device->selection);
wl_list_remove(&data_device->selection_destroy_listener.link);
}
data_device->selection = data_source;
if (data_source)
{
wl_resource_add_destroy_listener
(data_source, &data_device->selection_destroy_listener);
}
swc_send_event(&data_device->event_signal,
DATA_DEVICE_EVENT_SELECTION_CHANGED, NULL);
}
static void
meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,
MetaWaylandDataSource *source,
guint32 serial)
{
MetaWaylandSeat *seat = wl_container_of (data_device, seat, data_device);
struct wl_resource *data_device_resource, *offer;
struct wl_client *focus_client;
if (data_device->selection_data_source &&
data_device->selection_serial - serial < UINT32_MAX / 2)
return;
if (data_device->selection_data_source)
{
wl_data_source_send_cancelled (data_device->selection_data_source->resource);
wl_list_remove (&data_device->selection_data_source_listener.link);
data_device->selection_data_source = NULL;
}
data_device->selection_data_source = source;
data_device->selection_serial = serial;
focus_client = meta_wayland_keyboard_get_focus_client (&seat->keyboard);
if (focus_client)
{
data_device_resource = wl_resource_find_for_client (&data_device->resource_list, focus_client);
if (data_device_resource)
{
if (data_device->selection_data_source)
{
offer = meta_wayland_data_source_send_offer (data_device->selection_data_source, data_device_resource);
wl_data_device_send_selection (data_device_resource, offer);
}
else
{
wl_data_device_send_selection (data_device_resource, NULL);
}
}
}
if (source)
{
data_device->selection_data_source_listener.notify = destroy_selection_data_source;
wl_resource_add_destroy_listener (source->resource, &data_device->selection_data_source_listener);
}
}
static void
client_source_cancel(struct wl_data_source *source)
{
wl_data_source_send_cancelled(&source->resource);
}
