[gtk+] gdk: implement gdk_display_list_devices using GdkSeat

[Paolo Borelli <pborelli src gnome org>]

commit fa43edd244b2bbf9dfd9aa9994449f88201fd42e
Author: Paolo Borelli <pborelli gnome org>
Date:   Mon Feb 29 21:45:13 2016 +0100

    gdk: implement gdk_display_list_devices using GdkSeat
    
    Now that the function is factored out in a single place, we can
    refactor it to not use deprecated API.

 gdk/gdkdisplay.c |   35 +++++++++--------------------------
 1 files changed, 9 insertions(+), 26 deletions(-)
---
diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index 88586e5..6150ef7 100644
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -1851,35 +1851,18 @@ gdk_display_list_devices (GdkDisplay *display)
 
   if (!display->input_devices)
     {
-      GdkDeviceManager *device_manager;
-      GdkDevice *device;
-      GList *list, *l;
+      GdkSeat *seat;
 
-      G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
-      device_manager = gdk_display_get_device_manager (display);
+      seat = gdk_display_get_default_seat (display);
 
-      /* For backwards compatibility, just add
-       * floating devices that are not keyboards.
+      /* For backwards compatibility we only include pointing
+       * devices (the core pointer and the slaves).
+       * We store the list since this deprecated function does
+       * not transfer the list ownership.
        */
-      list = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING);
-
-      for (l = list; l; l = l->next)
-        {
-          device = l->data;
-
-          if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
-            continue;
-
-          display->input_devices = g_list_prepend (display->input_devices, g_object_ref (l->data));
-        }
-
-      g_list_free (list);
-
-      G_GNUC_END_IGNORE_DEPRECATIONS;
-
-      /* Add the core pointer to the devices list */
-      device = gdk_seat_get_pointer (gdk_display_get_default_seat (display));
-      display->input_devices = g_list_prepend (display->input_devices, g_object_ref (device));
+      display->input_devices = gdk_seat_get_slaves (seat, GDK_SEAT_CAPABILITY_ALL_POINTING);
+      display->input_devices = g_list_prepend (display->input_devices, gdk_seat_get_pointer (seat));
+      g_list_foreach (display->input_devices, (GFunc) g_object_ref, NULL);
     }
 
   return display->input_devices;